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In the context of smart city construction, 5G is officially put into commercial use, and urban public infrastructure is gradually becoming intelligent and digital. Smart street light is an important entrance to smart city construction. According to relevant research institutions, the global market size of smart street light will exceed 16 billion yuan in 2022, and the market size of China will exceed 4 billion yuan. But when it comes to smart street lamps, there doesn't seem to be much market -- "At present, most smart street lamps are not profitable." Is smart street lamp really a market that does not make money? For now, yes! In recent years, the artificial intelligence industry has developed rapidly, and the crazy actions of investors have driven the prosperity of AI. Intelligent street lamp, on the other hand, is a not good sell industry, for the development of intelligent street lamp, the development direction of enterprise is not unified, and involves the high integration of the other industries: wisdom in a street lamp, with LED lights, the WiFi module, environmental monitoring, monitoring camera, display, alarm, radio column, chargers and other equipment. Although these devices may not seem to have many advantages, lighthouses have become the most extensive "platform" for smart cities. With the advent of the IoT era, autonomous driving, 2K / 4K monitoring, environmental detection and other industries have entered a period of rapid development. How to deploy all kinds of equipment as far as possible in the front end has become the core problem. If the construction of base stations alone is not enough to support the huge number of iot devices, the street lamps, which are scattered all over the road, are the only alternative -- or, more specifically, the lampstands. Light racks are not a difficult or high-tech device to build, but in the IoT era, light racks have what companies are most concerned about: quantity and power. Based on these two features, the equipment provider can install all kinds of equipment on the lamp holder: base station, environment awareness, monitoring, edge computing server and other equipment. The effective combination of such equipment will provide the most comprehensive data for the city manager. It should be noted that the combination of smart city development with finance and policy, and the comprehensive layout of smart city through street lamps, cannot be completed in a short period of time. Therefore, most smart street lamp providers choose to "enclosure land" first -- once they win the street lamp project, they will have certain advantages in the future when they need to transform. However, it should not be ignored that even though there has been a good development trend, smart street lamp has not entered a period of rapid development. Due to the short development time of the smart light pole industry, most of them are in the pilot demonstration stage, and the industry lacks unified quality standards, resulting in uneven product quality. Although the smart light pole industry is at the forefront of the industry, it is difficult for most enterprises to carry out large-scale promotion due to the lack of relevant policies and industry standards, unclear market demand and unclear profit model. The total scale of the industry continued to expand Although not popular, but wisdom lamp pole industry is worthy of the blue ocean market. According to the incomplete statistics of bid-winning information of caizhaopeng, Electric power bid-winning network and local bid-winning network, there were 28 bid-winning projects of smart light poles in 2018, with a total scale of 353 million yuan. In 2019, smart light poles began to increase in quantity, winning 174 projects with a total scale of 5.90 billion yuan, up 1370% year on year. In 2020, smart light poles continued to grow rapidly, winning 207 projects with a total scale of 17.225 billion yuan, up 231.89% year on year. Who will be the master of the future? Smart street lamps have become a powerful new engine for smart city development. In the field of smart street lamps, there are relatively few enterprises in this field because the actual profit is not high. Think twice, Huati Technology, 3000 wisdom, Zhuming technology, Mingshuo technology, energy saving crystal and lighting, qin on photoelectric, Samsung lighting, Huapu Yongming, Yaming lighting and other street lamp enterprises layout wisdom street lamp. But it is worth noting that although there are relatively few companies in this field at present, some tech giants are actively engaged in it -- such as Huawei. As we all know, Huawei, as a giant in the field of communication, has developed a comprehensive layout based on communication, especially in smart city. In Huawei's business, government and enterprise have always been the key layout of Huawei. When Huawei actively participates in the construction of urban government-enterprise platforms, it has already realized the top-level design of smart city, and smart light poles are only part of it. With the growth of the industry, the number of smart light pole enterprises with actual products and able to implement projects has grown from 5 in 2015 to 40-50 now, and the number of enterprises has increased by more than 60% in the past three years. There are various types of enterprises and different development modes. At present, there are mainly the following types of enterprises entering the field of smart light poles: street lamp enterprises, lamp pole enterprises, control system enterprises and communication enterprises. Various related enterprises in the ecological chain actively cross the boundary and share the dividend of the development of smart light poles. In the future, the smart light pole field may attract enterprises from more fields to cross the boundary, with more diversified enterprise types, such as display screen enterprises and charging pile enterprises. However, with the establishment of industry norms and standards, the concentration degree in the industry will become higher and higher eventually, some enterprises without core competitiveness will be eliminated, and the number of enterprises will decrease. The main market share of smart light pole construction may be held by a few enterprises, such as China Tower, Huawei and other large enterprises. However, as far as the current development is concerned, the smart street lamp has not entered the Red Sea era, but is in the blue sea -- and the blue sea stage will remain longer. According to the China Internet Development Report (2021), The scale of China's AI industry has grown significantly with the wide application of next-generation information technologies such as the Internet of Things and cloud computing. At the same time, in the application scenarios of 5G, cloud computing, big data, Internet of Things and other fields vigorously promoted by the country, the deep integration of smart street lighting and AI technology will provide new momentum for the industrial upgrading of digital cities.

1. Garden lamps should use broken stone lampshades, and the lampshade tray should be made of cast aluminum. If glass lampshades are used, the lampshade bayonet should be lined with rubber rings, and the fastening bolts should be made of stainless steel. 2. The surface of courtyard lamp castings shall not have defects such as cracks, sand holes, loose pores and inclusions that affect the structural performance and view. 3. The door locks and hinges of the aluminum or glass fiber reinforced plastic lamp holder with open door holes should be intact, and the switch should be flexible and reliable. 4. The appearance of courtyard lamp castings, lamp arms, lamp poles painted or sprayed shall comply with the current industry standards regarding paint and spraying quality standards.

1, can be installed independently, no need to dig trenches, buried lines, backfill, save construction costs; 2, no need to purchase power capacity equipment, save the cost of the corresponding supporting equipment; 3. Solar lamps and lanterns can realize automatic control without personnel management and save management expenses; 4. Require energy from the sun, do not use conventional power energy, save operating costs; 5, easy maintenance, no electric shock accident, safe use; 6, energy saving: ether sunshine conversion to provide electricity, inexhaustible; 7, environmental protection: no pollution, no noise, no radiation; 8, safety: the use of voltage is 12V, no electric shock, fire and other accidents; 9, convenient: simple installation, do not need to wire or "disembowelling" digging construction, there is no power cut and power limit concerns, in the same use in places without electricity; 10, long life: the use of high efficiency energy-saving light source, light efficiency, branch low pressure, long-term durability; 11, less investment: no need to pay electricity, no need to track maintenance, operation and maintenance costs are low; 12, widely applicable: in the sunshine can be used, used in the city square, community, schools, factories, villages, bathing beaches, scenic spots, mountain areas, islands and other lighting projects; 13, high grade: green, environmental protection, energy saving, high-tech, is the symbol of the image of the use of units, grade, grade

Solar street lights are mainly composed of solar cell components, intelligent controllers, maintenance-free batteries, light sources, light poles and structural parts. The working principle of solar street lights is: solar cell modules convert solar radiation into electrical energy during the day and charge the maintenance-free battery. At night, the battery provides power to the light source load, and the light source automatically turns on when it is dark. The intelligent controller protects the battery from overcharging and overdischarging, and controls the turn-on and lighting time of the light source Jiangsu Bo Siwei-Detailed Explanation of Solar Street Lights Solar street lights are mainly composed of solar cell components, intelligent controllers, maintenance-free batteries, light sources, light poles and structural parts. The working principle of solar street light is: "Solar battery components convert solar radiation into electrical energy during the day, and charge the maintenance-free battery. At night, the battery provides power to the light source load. The light source will automatically turn on when it is dark. The intelligent controller protects the battery from overcharging and over-discharging. , And control the turn-on and lighting time of the light source. The installation process of solar street lights: 1 Dig the subgrade of the ground cage and the battery box. After the roadbed is dug, irrigate the ground cage and the subgrade of the battery box. Each subgrade must be leveled. After the roadbed is poured, the street lights can be installed after 15 days of maintenance. 2 Put the battery into the previously excavated battery roadbed, cover the soil, and pass the battery wires through the 2-inch PVC pipe that was poured into the roadbed in advance. Make sure that the wire pipes are exposed to the foundation of the ground cage. 3 Open the solar panel in the box, place the cardboard on the ground where the solar panel receives the sun, and then align the holes of the solar bracket (if the solar panel hole is small, use a drill to ream), use the bolt to flatten the pad and pass through Place a washer on the hole, screw on the nut, and use a 17 wrench to tighten the 4 bolts. 4 Open the cover of the control box with an inner hexagon, and screw the inner hexagon bolts back to the original place. Put a washer with bolts on the place where the control box is fixed. After passing through the hole, put the washer on, screw on the nut, and then fix the wrench with 10 to tighten the nut. 5 Drill two holes on the company's nameplate, and drill two holes on the cover of the control box according to the corresponding holes on the nameplate, and fix the company's nameplate with two studs with a nail gun. 6 Cut 2 thick and 2 small wires to a length of meters, and pass the iron wire through the head, pull the 4 wires from the control box all the way to the side of the light pole, and remove the 4 wires on the light pole head. The wires are knotted, and the wires from the control box are wrapped around the cover of the control box. 7 Fix the two thicker wires with tape on the lamp pole head, loosen the two bolts on the lamp arm, take off the lamp arm, hook out the two smaller wires with the hook, and pass the wires through the lamp Arm, screw back the bolts you just loosened, and fix the 2 thin wires with tape to the exit of the lamp arm. 8 Put the light pole next to the ground cage, put a stool on the small head, install a solar panel on the top, and connect the solar wire. The solar panel depends on the installation position and faces the south. Tighten the bolts on the bracket with a wrench. 9 Connect the LED lamp holder and the two wires passing from the lamp pole to the lamp arm, fix it with a plastic head, and then tie it with a nylon cable tie. Three nylon cable ties should be tied, and the four bolts are fixed to the lamp holder with an inner hexagon. , Make sure that the lamp cap is parallel to the pole. 10 Tear off the plastic tape on the threaded part of the ground cage exposed on the ground, and place a flat washer, spring washer, and nut on each side of the exposed roadbed of the ground cage. Each light pole needs 4 flat washer, 4 spring washer, and 4 Nut. 11 Move the foot of the light pole to the position of the 4 nuts in the ground cage, one person presses the foot of the light pole, step on it with the foot, and the three people behind stand up the light pole with their shoulders, as the heel of the light pole After the 4 bolts of the cage are aligned, put flat washers and spring washers on the diagonal corners and screw the nuts on. The two people holding the light pole up hold the light pole, and the two people fix the nut. The nut must be tightened. 12 Cut the insulation board. The thickness of the insulation board is ×. According to the hole position of the controller, 6 holes are to be drilled on the board, and then a hole fixed on the light pole is drilled. An insulating board where the controller is fixed with screws. 13 Connect the controller to the control box, connect the battery first, and then connect the lamp head line, and see if the lamp head is on, then connect the solar panel line. Fix the controller on the bolt, and then screw on the nut. Unscrew the bolts on the cover of the control box, put on the cover of the control box, screw on the bolts, and tighten with an Allen key.

Features: 1. The lighting of night scenes should be considered in accordance with the urban planning. City night lighting should be closely integrated with city planning and is an integral part of city planning. According to the overall plan, focus on the construction of the urban lighting project that reflects the characteristics of a city. Not only is the lighting function reasonable, but also has a high artistic level, making it a classic of the city's image. 2. Design night scenes according to city functions According to the deployment of the city's master plan, the night scene design should be consistent with the features of the city and the building's functions. Streets and lots with different functions, specific environments and buildings, their lighting should have different atmosphere, different brightness or different style requirements. 3. Regard the urban lighting project as an important part of the urban environmental landscape. The constituent elements of the urban environment landscape include natural objects and artificial buildings, both large and small, some focus on practical functions, and some highlight decorative ornamental value. From the past, the focus on function has been transformed into both practicality and aesthetics. In the future, it will be sustainable, standardized, and planned to expand implementation and improve the level of technology and art. 4. The city lighting project is closely linked with the construction project design. Efforts to integrate the urban lighting engineering work into the construction engineering design and construction process simultaneously. In modern municipal engineering, key cultural relics and old neighborhood renovation, building facade renovation, etc., the two can be coordinated. 5. Strengthen the management of urban lighting engineering work. Management work is of great significance to maintaining the normal operation of urban lighting engineering facilities and good lighting effects. Including the scientific management and legalization of management. At the same time, it is necessary to use modern control technology for scientific management, which can not only guarantee the lighting rate and the intact rate of the facilities, but also ensure the economy and practicality to replace the best effect. The construction of urban night scene lighting projects must be tailored to local conditions, within the limits of ability, and the limited funds should be used well. Do good and practical things for the broad masses of people. The outdoor lighting project is an art of the surrounding landscape or a specific landscape. Of course, this must be a technical life. Therefore, the first consideration is the safety of the project and the energy saving, low carbon and environmental protection. However, with the era of war against urban culture The background and people's life sentiment are also constantly improving, and people are paying more and more attention to the aesthetics of urban outdoor lighting projects. Outdoor lighting projects can be divided into two categories: 1: Commercial lighting (hotel lighting, square lighting, building lighting) 2: Municipal lighting (bridge lighting, scenic lighting, ancient building lighting) Compared with simple buildings, it is because of the lighting effect that adds lighting to them that makes it different. The image art of outdoor lighting project. A good urban outdoor lighting project design reflects this to a certain extent. The historical and cultural background of the city and its socio-economic development. Therefore, many outdoor lighting engineering designers use lights to express the artistic image of the city's night scene. To brighten different buildings, through the light and dark, virtual and real, light and shadow, dynamic and static, cold and warm modern lighting technology, the bright design technology is organically combined, showing a city different from the daytime Outdoor lighting project. The outdoor lighting project builds a splendid dream of a city. Technology is the means to realize dreams, and art is the ultimate goal of reaching dreams. Modern cities have different forms due to their unique geographical landscape, differentiated humanistic environment and their different aesthetic concepts. Buildings of different styles show their grandeur under the lighting decoration of the outdoor lighting project. Therefore, the outdoor lighting project strengthens the unique image of the city, thereby exerting the iconic value of the landscape. And outdoor lighting engineering designers try to use various technical means and methods to realize their artistic dreams, making this city even more unique under the background of outdoor lighting engineering. I believe many people will discover that no matter how big or good the city is, if the prosperous level is not beautiful, and the beautiful lighting is not arranged, and the night scene does not achieve the desired effect, then the city is no matter how good it is, no matter how economical. There will also be a sparse flow of people in the city, and if it goes on for a long time, then there will be a lighting project that is not in the past, so this is a very terrible thing. And for example, although some cities are small, but each area of them is carefully designed and built, then the prosperous streets, night scenes and other issues can make people feel the intention of urban architecture. Therefore, the significance of outdoor lighting projects is so important now that they can improve the city. If the current city has problems such as the night view is not prosperous, it can be quickly improved. Because of the existence of outdoor lighting projects, the current night view of the city can basically achieve these desired night views, regardless of the nature of the city. Whether they are prosperous or not, they all have reasons to keep people coming and going, and finally highlight the atmospheric scenery that they want to express. Important public buildings, historical sites, commercial buildings, square sculptures, or some special-shaped landmarks, transportation facilities such as bridges or MRT stations in the city can be beautified with lights at night, so that the night scene of the city is not only the signboard There can be a different atmosphere outside of neon lights. The overall consideration of the landscape lighting engineering design of the building`s led lighting project: 1. Viewing direction: The building may be seen from different directions. Angles can be seen, but generally, before designing, we must first decide a specific direction as the main viewing direction. 2. Distance: The viewing distance of the average person. The distance will affect the clarity of people's observation of the appearance of the facade, and at the same time affect the decision of the level of illuminance. 3. Surrounding environment and background: The brightness of the surrounding environment and background will affect the illuminance required by the subject. If the surrounding is very dark, a little light is enough to illuminate the subject. If the surrounding is very bright, the light must be strengthened to highlight the subject. In addition to the surrounding environment of the building, the exterior wall material of the building is the most momentous factor affecting the lighting effect. Basically speaking, materials with rough surfaces such as concrete, stone, and ceramic tiles have better effects after being irradiated with light. Materials with smooth surfaces such as aluminum, stainless steel, and glass will cause total reflection, not only the effect of light is not obvious. And it will cause pollution due to reflection. This phenomenon is especially serious with reflective glass. Don't be careful.

Solar photovoltaic power generation system is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It has two modes of independent operation and grid-connected operation. Independently operating photovoltaic power generation systems need batteries as energy storage devices, which are mainly used in remote areas without power grids and scattered populations. The overall system cost is very high; in areas with public power grids, photovoltaic power generation systems are connected to the grid and run in parallel. The omission of batteries can not only greatly reduce the cost, but also has higher power generation efficiency and better environmental performance. Overview: Solar power generation is divided into solar thermal power generation and photovoltaic power generation. Generally speaking, solar power generation refers to solar photovoltaic power generation, referred to as "photovoltaic". Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. The key element of this technology is the solar cell. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then combined with power controllers and other components to form a photovoltaic power generation device. Theoretically speaking, photovoltaic power generation technology can be used in any situation where power is needed, from spacecraft, down to household power sources, as large as megawatt power stations, as small as toys, and photovoltaic power sources are everywhere. The most basic components of solar photovoltaic power generation are solar cells (sheets), including monocrystalline silicon, polycrystalline silicon, amorphous silicon and thin-film batteries. Among them, single crystal and polycrystalline batteries are used the most, and amorphous batteries are used in some small systems and computer auxiliary power supplies. The efficiency of China's domestic crystalline silicon cells is about 10 to 13%, and the efficiency of similar products in the world is about 12 to 14%. Solar panels composed of one or more solar cells are called photovoltaic modules. Photovoltaic power generation products are mainly used in three aspects: one is to provide power for non-electricity occasions; the other is solar daily-use electronic products, such as various solar chargers, solar street lights and solar lawn lamps, etc.; third is grid-connected power generation. This has been widely implemented in developed countries. By 2009, China's grid-connected power generation has not yet begun to be fully promoted. However, part of the electricity used for the 2008 Beijing Olympics was provided by solar power and wind power. It is predicted that solar photovoltaic power generation will occupy an important position in the world's energy consumption in the 21st century. It will not only replace some conventional energy sources, but also become the main body of the world's energy supply. It is estimated that by 2030, renewable energy will account for more than 30% of the total energy structure, and solar photovoltaic power generation will account for more than 10% of the world's total power supply; by 2040, renewable energy will account for more than 10% of the total power supply. More than 50% of the energy consumption, solar photovoltaic power generation will account for more than 20% of the total electricity; by the end of the 21st century, renewable energy will account for more than 80% of the energy structure, and solar power generation will account for more than 60%. These figures are sufficient to show the development prospects of the solar photovoltaic industry and its important strategic position in the energy field. Taxonomy: Photovoltaic power generation systems are divided into independent photovoltaic systems and grid-connected photovoltaic systems. Independent photovoltaic power plants include power supply systems for villages in remote areas, solar household power systems, communication signal power supplies, cathodic protection, solar street lights, and other photovoltaic power generation systems with batteries that can operate independently. Grid-connected photovoltaic power generation system is a photovoltaic power generation system that is connected to the grid and transmits power to the grid. It can be divided into grid-connected power generation systems with and without batteries. The grid-connected power generation system with storage battery is schedulable and can be merged into or out of the grid as needed. It also has the function of backup power supply, which can provide emergency power when the grid is out of power. Photovoltaic grid-connected power generation systems with batteries are often installed in residential buildings; grid-connected power generation systems without batteries do not have the functions of dispatchability and backup power, and are generally installed on larger systems. Photovoltaic panels: Photovoltaic panels are a kind of power generation device that collects heat when exposed to sunlight and converts light energy into direct current. It is composed of thin solid photovoltaic cells almost entirely made of semiconductor materials (such as silicon). Since there are no moving parts, it can be operated for a long time without causing any loss. Simple photovoltaic cells can provide energy for watches and computers, while more complex photovoltaic systems can provide lighting for houses and power the grid. Photovoltaic panel components can be made into different shapes, and the components can be connected to generate more electricity. Rooftops and building surfaces will use photovoltaic panel components, and even used as a part of windows, skylights or shading devices. These photovoltaic facilities are usually called photovoltaic systems attached to buildings. Photovoltaic technology: The sun is a natural source of energy. Every living creature on the earth has the ability to function, and even its survival, is due to the energy directly or indirectly from the sun. Our earth is almost 100 million miles away from the sun. The radiant energy it intercepts has been incredibly small, that is, about three ten millionths. Even such a small amount of energy is actually 100,000 times larger than the existing power generation capacity of the entire world! The world, especially the industrialized countries, began to feel energy shortages. Therefore, people began to turn to solar energy to solve the energy crisis. Solar photovoltaic Solar energy can be supplied unlimitedly every day, and the quantity is huge. If it is used in a large power plant, the greenhouse effect will be reduced. Some energy experts and environmental protection experts believe that the thermal impact of solar energy is much smaller than that of any other alternatives in meeting human energy needs in the future. As a new energy source that does not pollute the environment and is inexhaustible, it is everywhere. Especially in terms of power supply, some experts believe that solar power will eventually account for 20% of the power supply. Solar energy is a kind of radiant energy. Solar power generation means that to directly convert sunlight into electrical energy, it must be converted into electrical energy with the help of an energy converter. The process of directly converting light energy into electrical energy is exactly called the photovoltaic effect. Without the help of any other mechanical parts, the energy in the light is obtained by the electrons of the semiconductor device, so electrical energy is generated. This kind of energy converter that converts light energy into electrical energy is a solar cell. Solar cells, like transistors, are made of semiconductors. Its main material is silicon, but there are also some other alloys. The high-purity silicon used in the manufacture of solar cells has to undergo a special purification process. As long as the solar cell is irradiated by sunlight or light, it can convert light energy into electrical energy, so that current flows from one side to the other, and generally can generate electricity equivalent to 10-20% of the received light energy. Generally speaking, the stronger the light, the more electricity is generated. In order to minimize the light reflection of the solar panel and convert light energy into electric energy, a layer of film that prevents light reflection is usually covered on it, making the surface of the solar panel purple. The basis of its working principle is the photovoltaic effect of the semiconductor PN junction. The so-called photovoltaic effect is when the object is illuminated, the charge distribution state in the object changes to produce an effect of electromotive force and current. When sunlight or other light illuminates the PN junction of the semiconductor, a voltage (called photo-generated voltage) appears on both sides of the PN junction. This phenomenon is the famous photovoltaic effect. Short-circuit the PN junction, and current will be generated. The main advantage of solar power generation is that solar cells can be installed in spaces that are not normally used, such as the roof, without noise, have a long lifespan, and hardly need to be adjusted once they are installed. Now, as long as the roof is filled with solar cells, the self-sufficiency of electricity in the home can be achieved. Nowadays, the main use of solar energy is no longer small-scale, but professional in nature. It has played an important role from the military field, the communications field to the urban construction field. Venezuela has also launched cheap solar cars, and European scientists have developed lightweight solar cells that can be worn on the body. There is a huge room for development in the use of solar energy, and related technologies may achieve breakthroughs in a short period of time. It has been used by many developed countries as an important part of their energy strategy. Principles of power generation: Solar cells are devices that respond to light and can convert light energy into electricity. There are many kinds of materials that can produce photovoltaic effect, such as: single crystal silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, indium copper selenium and so on. Their power generation principles are basically the same, and now take the crystal as an example to describe the process of photovoltaic power generation. P-type crystalline silicon can be doped with phosphorus to obtain N-type silicon, forming a P-N junction. When the light shines on the solar cell Example of solar photovoltaic power generation system On the surface, part of the photons are absorbed by the silicon material; the energy of the photons is transferred to the silicon atoms, causing the electrons to transition and become free electrons, which form a potential difference on both sides of the PN junction. When the circuit is connected externally, the voltage Under the action of, there will be current flowing through the external circuit to produce a certain output power. The essence of this process is: the process of converting photon energy into electrical energy. Solar photovoltaic power calculation: The solar AC power generation system is composed of solar panels, charge controllers, inverters and batteries; the solar DC power generation system does not include inverters. In order to enable the solar power generation system to provide sufficient power for the load, it is necessary to select various components reasonably according to the power of the electrical appliances. Take the 100W output power and use it for 6 hours a day as an example to introduce the calculation method: 1. First, calculate the number of watt hours consumed per day (including the loss of the inverter): if the conversion efficiency of the inverter is 90%, when the output power is 100W, the actual output power required should be 100W/90 %=111W; if it is used for 5 hours a day, the power consumption is 111W*5 hours=555Wh. 2. Calculate the solar panel: Calculate according to the effective daily sunshine time of 6 hours, and take into account the charging efficiency and the loss during the charging process, the output power of the solar panel should be 555Wh/6h/70%=130W. 70% of which is the actual power used by solar panels during charging application: In the 1960s, scientists already applied solar cells to space technology-power supply from communication satellites. At the end of the 20th century, in the process of continuous self-reflection on human beings, photovoltaic power generation, such a clean and direct form of energy, has become more and more important. Solar photovoltaic system display Kindness, not only in space applications, but also in many fields. Such as: solar garden lights, solar power household systems, independent systems powered by villages, photovoltaic water pumps (drinking water or irrigation), communication power supplies, cathodic protection of oil pipelines, optical fiber communication pumping stations, seawater desalination systems, road signs in towns, and highways Highway road signs etc. Around the turn of the century, photovoltaic power generation in advanced countries such as Europe and the United States was integrated into the urban power system and the power supply system of natural villages in remote areas was included in the development direction. The combination of solar cells and building systems has formed an industrialization trend. Application areas: 1. User solar power: (1) Small power supplies ranging from 10-100W, used for military and civilian life in remote areas without electricity, such as plateaus, islands, pastoral areas, border posts, etc., such as lighting, TV, radio cassette recorders, etc.; (2) 3 -5KW home roof grid-connected power generation system; (3) Photovoltaic water pump: solve the problem of drinking and irrigation in deep water wells in areas without electricity. 2. Traffic fields such as navigation lights, traffic/railway signal lights, traffic warning/sign lights, Yuxiang street lights, high-altitude obstruction lights, highway/railway wireless telephone booths, power supply for unattended road squads, etc. 3. Communication/communication field: solar unattended microwave relay station, fiber optic cable maintenance station, broadcasting/communication/paging power system; rural carrier telephone photovoltaic system, small communication machine, soldier GPS power supply, etc. 4. Petroleum, marine and meteorological fields: cathodic protection solar power systems for oil pipelines and reservoir gates, life and emergency power supplies for oil rigs, marine testing equipment, meteorological/hydrological observation equipment, etc. 5. Home lamp power supply: such as courtyard system, street lamp, portable lamp, climbing lamp, fishing lamp, black light lamp, rubber tapping lamp, energy-saving lamp, etc. 6. Photovoltaic power stations: 10KW-50MW independent photovoltaic power stations, wind-solar (diesel) complementary power stations, charging stations of various large parking plants, etc. 7. The combination of solar power generation and building materials in solar buildings will enable future large-scale buildings to achieve power self-sufficiency, which is a major development direction in the future. 8. Other fields include: (1) Supporting automobiles: solar cars/electric cars, battery charging equipment, car air conditioners, ventilators, cold drink boxes, etc.; (2) Solar hydrogen production and fuel cell regenerative power generation systems; (3) Sea water Desalination of equipment power supply; (4) Satellites, spacecraft, space solar power stations, etc. related policy: Notice of the National Development and Reform Commission on the Price Policy of Photovoltaic Power Generation Projects in 2018 (Fagai Price Regulations (2017) No. 2196 The Development and Reform Commissions, Price Bureaus, Energy Bureaus, Poverty Alleviation Offices of all provinces, autonomous regions, and municipalities directly under the Central Government, State Grid Corporation of China, China Southern Power Grid Corporation, and Inner Mongolia Electric Power Corporation: In order to implement the requirements of the "Energy Development Strategic Action Plan (2014-2020)" of the General Office of the State Council on the gradual decline of new energy benchmark on-grid tariffs, rationally guide new energy investment, and promote the healthy and orderly development of the photovoltaic power generation industry, it was decided to adjust the 2018 photovoltaic power generation Benchmarking on-grid tariff policy. With business from the National Energy Administration, the relevant matters are hereby notified as follows: 1. In accordance with the current technological progress and cost reduction of the photovoltaic industry, reduce the benchmark on-grid power prices for photovoltaic power stations that will be put into operation after January 1, 2018. The benchmark on-grid tariffs for Type I, Type II, and Type III resource areas will be adjusted to 0.55 per kWh. Yuan, 0.65 yuan, 0.75 yuan (tax included). Starting from 2019, all photovoltaic power generation projects included in the annual scale management of fiscal subsidies will implement the corresponding benchmark electricity price according to the time of operation. 2. For distributed photovoltaic power generation projects that are put into operation after January 1, 2018 and adopt the mode of "self-generated and self-used, remaining online" mode, the subsidy standard for total electricity per kilowatt-hour will be reduced by 0.05 yuan, that is, the subsidy standard will be adjusted to 0.37 yuan per kilowatt hour (Including tax). Distributed photovoltaic power generation projects that adopt the "full online" mode are implemented at the price of photovoltaic power stations in the resource area. Distributed photovoltaic power generation projects are exempt from various government funds and surcharges collected with electricity prices, system reserve capacity fees and other related grid-connected service fees. 3. The benchmark electricity price of village-level photovoltaic poverty alleviation power stations (0.5 MW and below) and the subsidy standard for household distributed photovoltaic poverty alleviation projects remain unchanged. 4. All new energy power generation companies and power grid companies must truthfully and completely record and save relevant power generation project online transaction power, price and subsidy amount and other information, accept supervision and inspection by relevant departments, and submit relevant data to the National Renewable Energy Information Management Center. The price authorities at all levels should strengthen the supervision of the implementation of new energy on-grid tariffs and the settlement of additional tariff subsidies, and urge the implementation of relevant on-grid tariff policies. 5. Encourage local governments to carry out price reforms for nearby consumption of photovoltaic power generation and pilot market-based bidding pricing in accordance with relevant national regulations, and gradually improve the mechanism for discovering prices through the market.

Wind-solar hybrid solar street light system can be applied to road lighting, landscape lighting, traffic monitoring, communication base stations, school science popularization, large-scale advertising, home power supply, etc., as well as seawater desalination, urban landscape, science education, microwave communication, military camp posts, islands and mountains. , Gobi grassland, forest fire prevention, air defense warning, remote rural areas and other geographic areas. Strive to provide users with an environmentally friendly, convenient and safe experience. system introduction: 1. Low wind speed start-up, low wind speed power generation, corrosion resistance and typhoon resistance of wind turbines: As a street lamp application type wind generator, it is not only necessary to ensure safety, aesthetics and practicability, the wind generator can start to rotate at a wind speed of 2.0 m/s, and start charging at a wind speed of 2.5 m/s. In addition, when applied in coastal areas, it can withstand up to 14 strong typhoons, so it must have a mechanical brake + electromagnetic brake dual-safety braking system. In order to prevent the corrosion of the air in coastal areas, the various parts of the wind turbine must be made of anti-corrosion materials. 2. Intelligent control of the control system (light control, time control, overcharge, overdischarge, overload, undervoltage, protection, etc.): As a street lamp control system, it not only needs to realize light effect control but also needs time control, so as to achieve the purpose of intelligent automatic control. During the charge and discharge period, it is necessary not only to prevent excessive charging and discharging, but also to realize functions such as excessive discharging. In addition, a low-voltage boost charging system at the core of the control system, when the electric voltage generated by wind power generation and solar power generation is less than 24V and greater than 15V, boost this part of the electrical energy to more than 24V, so that it can be processed. Take advantage of. 3. The bearing, anti-typhoon and shape design of the supporting system: Ordinary street lights have no load-bearing requirements on the top of the pole, but as a wind-solar complementary street lamp, not only the weight of the 50kg wind turbine and the weight of the solar battery pack, but also the need for deflection resistance in the event of a typhoon. The fan is in strong wind. The process of low-speed rotation is an overall force-bearing surface. Therefore, considering the above factors, the strength and cross-sectional shape of the lamp pole must consider the above safety factors. 4. The selection of the instantaneous voltage and charging and discharging capacity of the energy storage system: The energy storage batteries used in wind-solar hybrid solar street lights need to be continuously charged and discharged. Therefore, when choosing the battery, the main choice is to choose a floating-point voltage with a low instantaneous start voltage and a matching load power that can be repeatedly charged and discharged. 20-28V maintenance-free gel storage battery. 5. Solar power matching and conversion rate matching selection: The photovoltaic modules used in wind-solar complementary street lamps are limited by the conditions of the application of light resources, and economic factors should be considered in the selection and ratio of power. No matter the solar cell modules made of monocrystalline silicon, polycrystalline silicon or amorphous silicon, they are meeting their requirements. The conversion rate is between 15% and 17% according to local conditions. When choosing installation, it is necessary to set different sun inclination angles according to the latitude of the installation site. 6. Integration and matching of low-voltage lighting fixtures: The lighting fixtures of wind-solar complementary street lamps mainly choose low-voltage 24V lamps, such as energy-saving lamps, induction lamps, LED lamps, metal halide lamps, etc. The brightness of different combinations of these lamps can reach the effect of ordinary high-voltage lamps. A series of parameters such as illuminance and height need to meet the standards of street lamps. The power of the lamps must not only match the power generation of wind power equipment and solar power equipment, but also match the wind and solar resources of the place where they are used. And there is no danger of electric shock. 7. Integration of the above six major systems (reliability, matching, aesthetics, economy): The integration of the above six major parts of "wind turbines, control systems, support systems, energy storage systems, solar power generation systems, and lighting systems" is not only the principle of l+1=2, but ultimately needs to reach 1+1= l requirements, any part of the mismatch will affect the change of the entire system. And because of the different conditions in different regions, different wind-solar complementary system technologies are needed to adapt to regional changes, so as to achieve the most economical and most suitable system for users. The safety and reliability of the whole system is the first; the practicability is the second; the perfection of each component and the overall design is the third; the economy is the fourth. The integration of the six systems is ultimately used as a street lamp, and meeting the needs of users in different regions is the ultimate goal. Functional characteristics of wind and solar hybrid solar street lights 1. Wind and wind integration, strong complementarity, high stability, solar LED street light 2. Wide range of application, strong adaptability and strong practicability 3. One-time investment, continuous output, long service life 4. No pollution to the environment, absolutely green and environmentally friendly 5. Stable performance and low failure rate ◆Energy saving: convert wind energy and solar energy into electric energy, use natural energy, which is inexhaustible and inexhaustible; ◆Environmental protection: no pollution, no noise, no radiation ◆Safety: 12v voltage, no accidents such as electric shock, fire, etc. ◆Convenience: Simple installation, no need to wire or "break the belly" construction, no power outages, power curtailment concerns ◆Long life: independent intellectual property rights, high technology content, intelligent control system, stable and reliable performance, and a life span of 15-20 years. ◆High quality: green energy and green lighting, improve the grade of users and places of use, and have strong iconicity ◆Low investment: one-time investment, unlimited output, no electricity, long-term use, zero maintenance ◆Strong adaptability and wide range of adaptation: Wind-solar complementation overcomes the limitation of environment and load, and the application range is very wide. Wind-solar complementary solar street light application field edit Seawater desalination, urban landscape, popular science education, microwave communications, military camp posts, islands and mountains, Gobi grasslands, forest fire prevention, air defense warnings, remote rural areas Current application areas of wind-solar complementary new energy products: Road lighting, landscape lighting, traffic monitoring, communication base stations, school science popularization, large-scale advertising, home power supply Domestic status of wind and solar hybrid solar street lights Ordinary street lights not only need to ditch wiring and pay for electricity, but also to prevent the theft of cables. Electricity needs to consume one-time energy. If it involves a power outage, the entire area is out of power. Not only is electricity polluting equipment, but also high electricity and maintenance costs are required. Wind-solar hybrid solar street lights not only do not need to consume one-time energy, they can generate electricity for their own use, not only can prevent theft, but also use renewable wind and solar energy to meet the lighting requirements, which means that the one-time investment is slightly higher. But it can be done once and for all without paying electricity bills, which is both beautiful and can open up new horizons for energy saving and emission reduction. Wind-solar hybrid solar street lights are advocated by the country 1. To cater to the country's policy of vigorously advocating and encouraging the use of new energy, to open up a new world of "energy saving, consumption reduction, and emission reduction", and the government vigorously advocates "green energy, green lighting" to establish a landmark and intuitive scene. 2. It is in line with the urban development to build the four major environmental protection infrastructure constructions of "blue sky, clear water, green and clean", which can also reduce the energy consumption of local GDP per capita, and add bright spots to the establishment of a model city of "ecological civilization" and "circular economy". It can also enhance the image and taste of green and environmentally friendly new city construction. 3. It can enhance the citizens' awareness of the application of high-tech and new energy products, and it can also increase the citizens' awareness of the use of new energy. 4. Intuitive affirmation for the local government's work on "energy saving, emission reduction, green lighting, circular economy, ecological civilization, popular science education, and publicity". 5. Make corresponding contributions to the promotion of regional economy and the development of new energy industries; at the same time, it also opens up a new way for adjusting the economic and industrial structure. Wind-solar hybrid solar street light is basically equipped with wind-solar hybrid street light system Light pole height: 7-12 meters Light pole material: high quality Q235 steel structure standard light pole (hot-dip galvanized white + sprayed plastic) Solar photovoltaic modules: 75W-300W Wind turbine: 300W-500W Light source: LED lamp/DC energy-saving lamp/LVD induction lamp Battery: Maintenance-free lead-acid battery/buried gel battery 100AH-200AH Control system: intelligent boost type, microcomputer intelligent control, anti-overcharge, over-discharge, moisture-proof, output short-circuit protection and light control + time control to automatically turn on and off the lights. Working time: 6-12 hours/day, continuous work for 3-7 days in rainy and cloudy days Working temperature: -20℃-45℃ Wind-solar complementary solar street light design attention 1. It can be widely used for lighting in roads, courtyards, parks, tourist attractions, parking lots, factories, squares, schools, development zones, industrial parks and other places. 2. It can be customized according to customer requirements, including the light source model and power size, the number of lighting hours per day, the number of sustainable lighting days in rainy and rainy days, and the style and color of the lamps. 3. Due to the regional differences in solar and wind energy resources, the specific configuration of the wind-solar hybrid street lighting system is designed according to user needs and solar radiation at the installation site, annual average wind speed, road width and other factors. Anti-theft performance of wind and solar hybrid solar street lights 1. Anti-theft of the controller: The controller is placed inside the light pole close to the ground, and there is a special door lock outside, which has a good anti-theft effect. 2. Anti-theft of maintenance-free battery: The battery is placed in the battery cellar, covered with an anti-theft cage, and covered with an iron plate. This system is a patented product. In addition, there is a PE tube (inner diameter of 32mm) connecting the lamp pole and the battery cellar in the battery cellar. It has a good protective effect on battery cables, etc., and its anti-theft effect is ideal. Advantages of wind and solar hybrid solar street lights Wind-solar hybrid street lights use high-performance large-capacity maintenance-free lead-acid batteries to provide sufficient power for wind-solar hybrid street lights, ensure the lighting time of LED wind-solar hybrid street light sources in rainy days, and greatly improve the stability of the system. The main advantages are listed below: Energy-saving, emission-reduction, and environmental protection; no large amount of electricity expenses in the later period; resource-saving and environment-friendly society is becoming the general trend. Compared with traditional street lamps, wind-solar hybrid street lamps use renewable solar and wind energy in nature as energy sources, do not consume any non-renewable energy, and do not emit polluting gases into the atmosphere, resulting in reduced pollution emissions to zero. In the long run, the protection of the environment is self-evident, and at the same time, the cost of a large amount of electricity expenses in the later period is eliminated. The cable laying project is exempted, and there is no need to construct a large number of power supply facilities; the operation procedures of the mains lighting project are complicated, and the basic works such as cable trench excavation, laying concealed pipes, pipe threading, and backfilling require a lot of labor; at the same time, transformers, power distribution cabinets, and Large quantities of electrical equipment such as electrical panels also consume a lot of financial resources. Wind-solar hybrid street lamps do not. Each street lamp is a separate individual, no need to lay cables or large quantities of electrical equipment, which saves both manpower and money. Individual damage does not affect the overall situation, and is not affected by large-scale power outages; because conventional street lights are connected by cables, it is likely to affect the entire power supply system due to individual problems; this situation will not occur with wind-solar hybrid lights. Distributed independent power generation system, individual damage will not affect the normal operation of other street lights, even in the event of a large-scale blackout, it will not affect the lighting, and uncontrollable losses are therefore greatly reduced. Save a lot of cable costs, and avoid the loss of cable theft; installing street lights in remote areas where the power grid is not widely available, the cost of wire installation is high, and there will be serious theft. Once stolen, the entire power output will be affected and the loss will be huge. The use of wind-solar complementary street lamps will not have this concern. Each street lamp is independent, eliminating the need for cable connections. Even if theft occurs, it will not affect the normal operation of other street lamps and minimize the loss. Intelligent control, free of manual operation, simple construction and convenient maintenance; wind and solar hybrid street lights are controlled by intelligent controllers, which can be divided into two automatic control methods: time control and light control, which are both safe and economical; independent and integrated power supply system , It is not interfered by large-area circuit construction, the process is simple, the construction period is short, and the maintenance is more convenient. City lighting: As an emerging energy system, it has played a role in lighting while saving costs and improving system stability. Today, when traditional energy occupies most of the market, new energy has undoubtedly become a highlight of cities and communities. Improve people's awareness of energy conservation; the lack of traditional energy sources and environmental pollution have reached the point where it must be resolved. The global air pollution is quite serious, and the use of new energy can effectively raise people's awareness of energy conservation and make our lives more quality and energy-saving. Wind-solar hybrid street lights are smart street lights that use wind and solar energy for power supply. At the same time, they also have the advantages of both wind power and solar power, providing a stable power supply for urban street lights.

Electric towers are trapezoidal or triangular tower-shaped buildings, usually 25-40 meters in height, and are of steel frame structure. Electric towers are mostly built near power plants and distribution stations in the wild. They are an important facility for the power sector. They can overhead power lines and play a role of protection and support. The design, manufacture, installation, maintenance and quality inspection of power towers are important guarantees for the operation and development of modern power systems. 1. The high-voltage line tower is divided into a linear tower and a tensile tower. The corner tower is a kind of tensile tower, and the cat head tower is a kind of linear tower; 2. It looks like a straight tower, the insulator is a cathead tower suspended vertically, and the insulator is horizontal, which is used to prevent the link tower from falling down and the line turning, etc.; 3. The voltage depends on the number of insulators, 1-2 pieces: 10KV, 3-5 pieces, 35KV, 7 pieces 110KV, 14-16 pieces 220KV, 28 pieces 500KV. ; Electric tower fence In order to prevent the theft of wires or the climbing of extreme people, protect the surroundings of the electrical tower. Provide effective preventive measures, hereby increase the fence (guardrail). Effectively eliminate potential safety hazards. Purse net specifications: 60*60*3.0; 50*50*3.0; 60*60*5.0; Basic layer: 600*600*1000 How many power poles do you know? There are only a few common poles and towers, and there are different classifications. First, let's talk about the font tower: 1. Dry font tower The "gan" character tower is named after the Chinese character "gan". It is a common tower type on both DC and AC transmission lines. Mostly linear towers are also common tensile & corner towers for ≥220 kV transmission lines. 2. The upper font tower Only one overhead ground wire is erected on the tower, and the conductor is arranged in an asymmetrical triangle, and its shape is "upper". It is suitable for lines with small conductor cross-sections in light thunder and light ice areas, and is often used for power lines with voltage levels of 110 kV and below. 3. Gate-shaped tower As the name suggests, the pole tower that uses two columns to support the conductors and overhead ground wires is like a big "door". This kind of tower is more applicable, and it is more economical when it has a cable. It is often used in the situation where double overhead ground wires and conductors are arranged horizontally. It is generally used for lines ≥220 kV. The cable can be used to improve the tower`s performance. Stability, the column sometimes has a certain slope. 4. V-shaped tower The guyed V-shaped tower, a special case of the gate-shaped tower, is shaped like a "V" and comes with "big V certification", so it is easy to identify in the wilderness. It is easy to construct and consumes less steel than other guyed gate towers, but it occupies a large area and is restricted to use in river networks and large-scale mechanical farming areas. It is commonly used in 500 kV lines, and it is also used in a small amount in 220 kV. 5. T-shaped tower The tower is in the shape of a "T", with two transmission lines hanging underneath, with one positive pole and one negative pole. It is the main tower for direct current transmission. Look carefully at the tower, there are two small "corners" on the tower, and there is also a ground wire on each side. "Lightning line". After talking about the font tower, let's talk about the pictogram tower: 1. Wine glass tower Two overhead ground wires are erected on the tower, the wires are arranged on a horizontal plane, and the tower is shaped like a wine glass. Seeing this, some friends may not feel like it. In fact, the correct way of abstraction looks like this: It is usually a common tower type for 220 kV and above power transmission lines. It has good construction and operation experience, and is especially suitable for heavy ice or mine areas. 2. Cat head tower Cathead tower is a kind of high-voltage power transmission linear tower. Two overhead ground wires are erected on the tower, the conductors are arranged in an isosceles triangle, and the tower shape is cathead-shaped. In other words, this product can be regarded as realistic in the abstract school. Please forgive me for my bohemian style. Another high-definition close-up: It is also a common tower type for transmission lines with voltage levels of 110 kV and above. Its advantage is that it can effectively save line corridors. 3. Shofar Tower The shofar tower is a type of transmission tower, named after its image resembling a shofar. Generally used for tensile towers. As for the horns, see the picture: 4. Drum Tower Drum tower is a common tower type for double-circuit transmission lines. Three wires on the left and right sides of the tower form a three-phase AC line. The three wires of a circuit are all arranged in the top, middle and bottom, among which the middle wire protrudes outward from the top and bottom two wires, so that the outline of the six wires is similar to the protruding drum body, hence the name drum tower. To put it simply, the outline of the wire suspension point is arranged in a drum shape and named after it. Don`t doubt, it`s better to look at it this way~ The drum-shaped tower is suitable for areas with heavy icing, which can avoid the occurrence of flashover accidents when the wires are deicing and jumping.

The high pole lamp generally refers to a new type of lighting device composed of a steel cone lamp pole above 15 meters and a high-power combined lamp structure. It is composed of lamp holder, internal lamp electrical, pole body and basic parts. The shape of the lamp holder can be determined according to user requirements, surrounding environment, and lighting needs. The internal lamps are mostly composed of floodlights and floodlights. The light source uses NG400 high-pressure sodium lamps with a lighting radius of 60 meters. The rod body is generally a pyramid-shaped single body structure, which is rolled out of steel plate, with a height of 15-40 meters, and most of it is composed of two to three sections. Configuration: 1. The light pole is an octagonal, twelve-sided, and eighteen-sided pyramidal pole, which is cut, bent, and automatically welded to form high-strength high-quality steel plates. The general height is 25, 30, 35, 40 and other specifications, with the largest design The wind resistance can reach 60 meters per second, and each specification is composed of 3 to 4 plug-in sections. Equipped with flanged steel chassis, with a diameter of 1 meter to 1.2 meters and a thickness of 30 mm to 40 m m. 2. The functionality is mainly frame structure, and some are mainly decorated with steel pipes and steel pipes. Lamp poles and lamp panels are treated with hot-dip galvanizing. 3. The electric lifting system consists of an electric motor, a winch, three groups of hot-dip galvanized steel wire ropes and cables. The lamp pole is installed in the body, and the lifting speed is 3 to 5 meters per minute. 4. The guiding and unloading system is composed of guiding wheels and guiding arms to ensure that the lamp panel does not move laterally during the lifting process, and to ensure that the lamp panel can be automatically detached and locked by the hook when the lamp panel is raised in place. 5. The lighting electrical system is equipped with 6-2 4 4 0 0 w-1 0 0 0 w metal halide (white light), flood light, flood light lamps, and the computer time controller can automatically control the switch light time and partial or full lighting. 6. Lightning protection system: a 1.5-meter-long lightning rod is installed on the top of the lamp, and a 1-meter-long grounding wire is installed on the underground foundation and welded to the underground bolt. High pole lamp use place The scope of use of high pole lights: city squares, stations, docks, freight yards, highways, stadiums, overpasses. High pole lamp classification Generally can be divided into lifting type and non-lifting type. The height of the lifting main pole is generally more than 18 meters, and the electric lifting operation is convenient. After the lamp panel is raised to the working position, it can automatically take off the panel, hang the ditch, and unload the wire rope. The lift-type high-pole lamp is equipped with manual and electric lift control modes, so that the lamp panel can be safely and reliably lowered to 2.5 meters above the ground, which is convenient for maintenance work. The length of the lead wire of the manual remote control device is 10 meters, and the operator controls the lifting of the lamp panel at a distance of 5 meters, which can ensure the personal safety of the operator. The lift-type high pole lamp is also equipped with a spare cable. When the lamp panel is lowered to the lowest position, one end of the cable is inserted into the socket of the electrical control system, and the other end is inserted into the junction box on the lamp panel, so that the lamp panel can be directly supplied with power , Overhaul lamps. The sealing grade of all lamps of the lift-type high pole lamp is IP65 international standard to prevent the intrusion of dust and rainwater and ensure the service life of the bulb. The materials of the lamps are generally made of aluminum alloy plates with good corrosion resistance and stainless steel. The high-pole lights we usually talk about are actually very different according to their use. The classification and name of the high-pole lights vary according to different occasions. For example, those used in wharves are called high-pole lights on piers, and those used in squares are called high-pole lights in squares. Named there are port high-pole lights, airport high-pole lights, explosion-proof high-pole lights, stainless steel high-pole lights and so on. It is generally considered that the street light poles that exceed 15 meters are called high pole lights, ranging from 15 to 40 meters. The commonly used ones are 15 meters, 18 meters, 20 meters, 25 meters, and 30 meters. The five specifications are the most common. Others are generally the specific height required by the customer to design, this is what we often call the high pole lamp divided by height. High pole lamp installation High pole lamp preparation 1. Carefully count all components according to the loading and packing list. 2. Check whether the components are damaged, bent, twisted, and whether the zinc layer is damaged. 3. The signs on each section of the rod indicate the type, order number, and number of sections of the rod. The weight of the shaft is marked with a colored pen on the inside of the shaft. Check whether the delivery is correct and whether the crane lifting capacity is sufficient. 4. According to the maximum and minimum socket length provided on the drawing, make a mark on the rod for use when socketing. High pole lamp assembly 1. Each splicing point provides a socket length, but due to the influence of manufacturing, installation errors and physical factors, there are changes in socket length, so the maximum socket length and the minimum socket length are provided. 2. In order to facilitate installation, it may be necessary to lubricate the mating surface. Be careful not to use lubricating oil to prevent leakage and contamination of the rod body, and soapy water can be used to lubricate the inner and outer surfaces of the sleeve. 3. When socketing, apply the necessary force at both ends to obtain a tight socket. Lifting principle of high pole lamp In the rectangular cavity at the bottom of the elevating high pole lamp, in addition to the electrical control system, a motor and other elevating systems are also installed. The electrical control system is installed inside the light pole to avoid the failure of the lifting movement caused by the harsh outdoor environment. There are various circuit overload protection devices in the electrical control system. The conductors of the circuits in the system are widely plated with copper-based silver to ensure good electrical connections. The lifting system of the lifting high pole lamp drives the lifting of the lamp panel through components such as electric motor, (electromagnetic brake type) worm gear reducer, safety coupling, main wire rope, auxiliary wire rope, rope splitter and movable pulley group. The worm gear reducer has strong self-locking ability, compact transmission, and large transmission ratio. In order to reduce the gear ratio of worm gear and worm, and reduce the rising torque, a set of movable pulleys is specially added to make the lifting speed of the lamp panel less than 0.2 m/s . The main steel wire rope is connected with the lamp panel auxiliary steel wire rope through the rope splitter, which can avoid the entanglement of the auxiliary steel wire due to the stretching of the main steel wire. The main and auxiliary steel wire ropes are made of high-strength, corrosion-resistant 6*19 non-rotating galvanized steel wire rope. The lifting pulleys are all made of A3 steel brackets, stainless steel shafts, and copper pulleys that have been hot-dip galvanized to ensure flexible operation without corrosion under normal atmospheric conditions. Various fasteners, washers, clamp rings and other parts are also made of hot-dip galvanized parts or stainless steel. The lamp panel is equipped with 6 sets of guide pulleys and more than three sets of braking devices. The guide wheels distributed at 120 degrees roll along the surface of the lamp pole during the raising or lowering process of the lamp panel to ensure that the lamp panel does not swing. The surface of the working part where the guide wheel of the lamp panel is in contact with the surface of the lamp pole adopts the rubber hot pressing process. In order to fully ensure that the lamp panel stops automatically when it reaches the limit position, reliable limit switches are installed for the rising and falling movements of the lamp panel, and over-travel protection is provided. The lifting of the lamp panel of the high pole lamp is realized by changing the rotation direction of the motor. For security and anti-theft, the rectangular cavity is equipped with a sealed door, and a special door lock is installed on the sealed door. Important safety knowledge of high pole lights: For users who have not been exposed to high-pole light products, check the production quality of a high-pole light and whether the installation process is reasonable. You can judge from the following points. Since the height of the high pole lights is between 18 meters and 35 meters, the lightning protection measures must be done well. Many of the high pole lights that we often see are only installed and used after hot-dip galvanizing. The main body of the light pole does not have a problem with electricity, but in recent years, considering the aesthetics of high-pole lights, a spraying process has been added to the surface of many sections, and silver and white are more common. At this time, you need to pay attention, and some High-pole lamp manufacturers have overlooked a problem, that is, the plastic powder itself is insulated. If the plastic powder is sprayed on the lightning rod, the conductive effect of the lightning rod will disappear. If such a problem is found during installation, you must inform The installer should completely scrape the plastic powder from the top of the lightning rod at least 20 cm from top to bottom, and then use the lightning rod to fix the top wire at the junction of the lightning rod and the rain cap to push out the plastic powder of the lightning rod, so that it can conduct normally. . When installing the lamp, if it is an LED lamp, then the driving power behind the lamp is divided into neutral, live, and ground. When wiring, the ground must be connected to the pre-arranged main cable. If the ground of the driving power is If the cable is not connected, it is likely to be burnt during a thunderstorm. Then there is the processing of the terminal. The serial wire joints must be tinned, then wrapped with insulating tape, and then covered with flame-retardant wax tubes. The purpose of this is to avoid excessive aging of the wiring under high temperature and rain exposure. , Causing a short circuit. Lamps, especially high-pressure sodium lamps, must pay special attention when installing. The fixing nut connecting the lifting beam must be tightened with a wrench. It is often seen that the lamp head of the high pole lamp on the square or roadside is drooping down, that is, it is not fixed properly. Caused by screws. In severe cases, it will cause personal injury if it falls. High pole lights are generally composed of two or three sections of steel pipes. Pay special attention to the installation. When every two sections are inserted into each other, the insertion depth shall not be less than 60 cm. If the insertion is not in place, there is no need to worry about it. Falling down on its own, but it will affect the overall verticality of the high-pole lamp, and it will shake left and right. If it is plugged into place, there will be no problems. The top part of the top section of the high pole lamp, that is, the position of the fixing hook, is connected by three M14 or M16 screws. When installing, it should be noted that these three screws must be stainless steel screws. Ignore this problem and use ordinary iron galvanized screws. After a long time, the iron screws will become severely rusted, making it difficult to decouple or unable to decouple. After the lamp has a problem, the lamp panel cannot be raised and lowered normally.

High-power LED street light, as the name implies, is a street light with a single power greater than 1 watt and a new type of LED semiconductor light source. The current standard for LED street lights is generally 0.48, which is an average illuminance of uniformity of road surface illuminance, which is greater than the national traditional standard of 0.42. The spot ratio is 1:2, which is in line with the road illuminance. (The actual 1/2 center spot reaches 25LUX, the 1/4 center light intensity reaches 15LUX, the lowest light intensity at 16 meters away is 4LUX, and the overlapping light intensity is about 6LUX. The current market street lamp lens material is an improved optical material, with a transmittance of ≥93% , Temperature resistance -38-+90 degrees, anti-UV ultraviolet rays, and no change in yellowing rate for 30,000 hours. It has very good application prospects in new urban lighting. The depth of dimming, and the color and other characteristics will not Changes due to dimming. Applicable places: Urban roads, sidewalks, squares, schools, parks, courtyards, residential areas, factories and other places that require outdoor lighting. The key to high-power LED street lights is good heat dissipation and stable driving power (constant current, constant voltage) Solar LED street lights, as the name suggests, use solar silicon panels as the power supply, LED street lights The standard of LED street light is generally: 1. The general conversion rate of solar modules is 15%, (monocrystalline silicon solar modules) 2. The average illuminance of uniformity of road surface illuminance is 0.48, which is greater than the national traditional street lamp standard of 0.42. The spot ratio is 1:2, which is in line with the road illuminance. (The actual 1/2 center spot reaches 25LUX, the 1/4 center light intensity reaches 15LUX, the lowest light intensity at 16 meters away is 4LUX, and the overlapping light intensity is about 6LUX. 3. The street lamp lens material in the market is an improved optical material, with a transmittance of ≥93% and a temperature resistance of -38 to +90 degrees. The average illuminance of uniformity of road surface illuminance is 0.48, which is greater than the national traditional street lamp standard of 0.42. The spot ratio is 1:2, which is in line with the road illuminance. (The actual 1/2 center spot reaches 25LUX, the 1/4 center light intensity reaches 15LUX, the lowest light intensity at 16 meters away is 4LUX, and the overlapping light intensity is about 6LUX. advantage: 1. The characteristics of the LED street lamp itself-the one-way light, no light diffusion, to ensure the light efficiency; 2. The LED street lamp has a unique secondary optical design, which irradiates the light of the LED street lamp to the area that needs to be illuminated, and further improves the light efficiency to achieve the purpose of energy saving; 3. The efficiency of the LED light source has reached 100lm/W, and there is still a lot of room for development, with a theoretical value of 250lm/W. The luminous efficiency of high-pressure sodium lamps increases with the increase of power. Therefore, the overall luminous efficiency of LED street lamps is stronger than that of high-pressure sodium lamps; 4. The light color rendering of LED street lamps is much higher than that of high-pressure sodium lamps. The color rendering index of high-pressure sodium lamps is only about 23, while the color rendering index of LED street lamps is above 75. From the perspective of visual psychology, the same brightness can be achieved. The average illuminance of LED street lamps can be Reduced by more than 20% than high-pressure sodium lamps, (refer to the British principle of lighting standards); 5. The light decay of LED street lights is small, less than 3% in a year, and it can still meet the road use illuminance requirements after 10 years of use, while the high-pressure sodium lamp has a large decay, which has dropped by more than 30% in about a year. Therefore, LED street lights are in The power design can be lower than that of the high-pressure sodium lamp; 6. The LED street lamp has an automatic control energy-saving device, which can achieve the greatest possible reduction in power and energy saving under the condition of meeting the lighting requirements at different times; 7. LED is a low-voltage device. The voltage to drive a single LED is a safe voltage. The power of a single LED in the series is 1 watt, so it is a safer power supply than the use of high-voltage power supplies. It is especially suitable for public places (such as street lights). Lighting, factory and mine lighting, automotive lighting, civil lighting, etc.); 8. Each unit LED chip has only a small volume, so it can be prepared into various shapes of devices, and is suitable for variable environments; 9. Long lifespan: It can be used for more than 50,000 hours and provides three-year quality assurance; 10. High light efficiency: Using chips ≥100LM, it can save energy by more than 75% compared to traditional high-pressure sodium lamps; 11. Easy installation: no need to add buried cables, no rectifiers, etc., directly install the lamp head of the street lamp on the lamp pole or nest the light source into the original lamp shell; 12. Excellent heat dissipation control: the temperature in summer is controlled at about 45 degrees, and passive heat dissipation is adopted; 13. Reliable quality: All circuit power supplies use high-quality components, and each LED has a separate over-current protection, so there is no need to worry about damage; 14. Uniform light color: No lens is added, and the uniform light color is not sacrificed to increase the brightness, so as to ensure the uniform light color without aperture; Based on the above principles, the energy-saving effect of high-power LED street lamps is significant, and it can save more than 60% of electricity instead of high-pressure sodium lamps; Low maintenance cost: Compared with traditional street lamps, the maintenance cost of LED street lamps is extremely low. After comparison, all input costs can be recovered in less than 2 years. High-power LED street lights street lights: High-power LED street lamp technical indicators air convection heat dissipation type high-power LED street lamp lamps. Air convection heat dissipation type high-power LED street light fixtures. Its purpose is to solve the heat dissipation problem of high-power LED lamps and propose a high-power LED street lamp lamp with air convection heat dissipation, which includes a lamp head assembly, a lamp heat sink assembly and a lamp tail assembly. The lamp heat sink assembly is an arc-chord cylindrical shell. , Open at both ends, the two sides of the arc cylindrical surface are vertical surfaces, and the vertical surface is also provided with array of through holes. In the inner cavity of the arc-chord cylindrical shell, there are 4-10 axially arranged and aligned with the arc cylindrical surface and the chord cylindrical surface. The two vertical sides of the vertical rib heat conduction plate and the vertical rib heat conduction plate and the arc-chord cylindrical shell are also provided with array through holes. The vertical rib heat conduction plate and the two vertical ribs on both sides of the arc-chord cylindrical shell are also provided with array through holes. 5-11 heat dissipation channels for hot air flow are formed in the lamp heat sink assembly. The utility model has the advantages that there are multiple heat dissipation channels through which hot air flows in the internal cavity of the heat dissipation body, and the vertical rib heat conduction plate also serves as a heat dissipation surface, the heat exchange surface is increased, and the heat discharge efficiency is high. Air convection heat dissipation type high-power LED street light Shape structure design of high-power LED street lamp The appearance design is novel, the structure is ingenious, and full of modern flavor, which is in line with the trend of the times. In terms of heat dissipation, we creatively adopted the air convection cavity aluminum radiator design. The upper and lower heat dissipation surfaces of the radiator are connected by eight vertical ribs. , Front and back pass LED street light (air convection heat dissipation type) LED street light (air convection heat dissipation type) At the same time, there are air convection holes on the left and right sides, which strengthen the air circulation inside the cavity and facilitate the discharge of heat, thereby effectively improving the heat conduction efficiency of the LED light source. The above unique heat dissipation design scheme ensures the safe working temperature of the high-power LED light source below 45°C. High-power LED street light metal bolt type Independent research and development and design of metal bolt type high-power LED light source. In order to improve the stability of the product, we use high-quality LED light-emitting chips imported from the United States. The LED light-emitting chips are directly encapsulated on the top of the nut of the metal bolt, and the LED metal bolt is directly screwed on the aluminum radiator when the product is assembled. Therefore, the LED and the radiator are effectively integrated, which changes the current situation of traditional high-power LED light sources using thermal silica to conduct heat, greatly improves the heat transfer efficiency between the LED and the aluminum radiator, and effectively guarantees The service life of the LED light source is greater than 60,000 hours. At the same time, high-quality Taiwanese phosphors are used to make a single LED brightness above 80 lumens; and there are a variety of color temperatures to choose from, which can meet the needs of different color temperatures in different occasions. High-power LED street lamp secondary optical system It adopts a unique secondary optical lens module and "belt-shaped spot" light output design. The length of the light spot is determined by the angle of the LED light, so as to reasonably control the light distribution, avoid light superimposition and waste, reduce light loss, and realize the connection of the strip light spots between the light poles, so that it meets the national standards. Various brightness indicators. While ensuring the ideal road surface illumination and uniformity, it eliminates LED glare and protects the LED light source. The optimization of high-power LED street lamp drive circuit DC 9V-30V or AC 84V-264V wide voltage input drive circuit design. The precise constant current output enables each high-power LED light source to work at a constant rated current, with low line loss and aging coefficient, electrical conversion efficiency ≥85%, and precise constant current output to ensure the service life of the LED light source. Modular design of high-power LED street lights The light source adopts a modular design scheme to achieve the best matching of ground illuminance and power. By increasing or reducing the number of light sources, different road width and illuminance requirements are met, achieving the goal of not only meeting the lighting requirements of the city without wasting electric energy. LED lighting technology is becoming more and more mature, and the efficiency of high-power LED light source has reached 80lm/W or more, which makes it possible to transform urban street lighting energy-saving. LED street lamps, especially high-power LED street lamps, are impacting the traditional street lamp market at a rapid pace. As the name implies, high-power LED street lights are street lights with a power greater than 30 watts and adopting a new type of LED semiconductor light source. The standard of LED street light is generally the average illuminance of uniformity of road surface illuminance (uniformity of road surface illuminance) 0.48. The spot ratio is 1:2, which is in line with the road illuminance. (The actual 1/2 center spot reaches 25LUX, the 1/4 center light intensity reaches 15LUX, the lowest light intensity at 16 meters away is 4LUX, and the overlapping light intensity is about 6LUX. The street lamp lens material on the market is an improved optical material with a transmittance of ≥93%. Temperature resistance -38-+90 degrees, UV resistance, and no change in yellowing rate for 30,000 hours. Solar LED street lights refer to LED street lights that use solar silicon panels as the power supply. The standard of LED street light is generally: 1. The conversion rate of light is 17%, (the solar energy per square meter is 1000W, and the actual utilization efficiency is 170W) 2. The street lamp lens material in the market is an improved optical material, with a transmittance of ≥93% and a temperature resistance of -38 to +90 degrees. 3. LED street lamp lens, mainly used for LED street lamp lens, the spot is rectangular, the material is PMMA optical material, the transmittance is ≥93%, the temperature resistance is -38-+90 degrees, and the anti-UV yellowing rate is 30,000 hours without Changes etc., 4. The average illuminance of uniformity of road surface illuminance is 0.48. Spot ratio 1:2 5. Comply with the road illuminance. (The actual 1/2 center spot reaches 25LUX, the 1/4 center light intensity reaches 15LUX, the lowest light intensity at 16 meters away is 4LUX, and the overlapping light intensity is about 6LUX. 6. It has very good application prospects in new urban lighting. Dimming depth, and the color and other characteristics will not change due to dimming. 7. Adaptation humidity: ≤95% 8. Quality assurance: 2 years market expectation Despite the rapid development of LED street lights, the standard of LED street lights is relatively lagging behind. Globally, there are not all LED street lamp standards, such as LED street lamp standards in Europe. In fact, the standards for LED street lights in different regions are not the same in terms of indicators. The LED street lights we make must meet the requirements of the sales area in terms of standards. Therefore, bidding for LED street light projects requires in-depth study of local LED street light standards. The only way is this Will have a place in the fierce market competition. As LED high-power street lights are installed outdoors, they are often attacked by unexpected weather and have high requirements for stability and safety. Special attention should also be paid to the installation. Installation method of high-power LED street light 1. When installing LED high-power street lights, it is recommended to use guide sleeves for positioning. 2. Be sure not to install LED high-power street lights when the pins are deformed. 3. When deciding to install in the hole, calculate the dimensions and tolerances of the hole spacing on the face and the circuit board to avoid excessive pressure on the bracket. 4. Before the soldering temperature returns to normal, the LED must be protected from any vibration or external force. 5. Pay attention to the arrangement of the outer wires of various devices to prevent incorrect polarity installation. The device should not be too close to the heating element, and the working conditions should not exceed its prescribed limits. Precautions When cleaning the colloid with chemicals, you must be especially careful, because some chemicals can damage the surface of the colloid and cause discoloration, such as trichloroethylene, acetone, etc. It can be wiped and dipped in ethanol for no more than 3 minutes at room temperature.

Design The trail and courtyard lights are actually a combination of two types of lights. The courtyard lights pay attention to the landscape and the trail lights pay attention to the functionality. The two could have been separated to form their own systems, but after consideration, the two are still integrated. Garden lights for trails. Landscape application The following issues should be paid attention to in the design of trail garden lights: 1. The trail garden lights mostly exist in the form of diffused light. The difference between diffused light and direct light is that it will not produce too much shadow, making the color brighter and darker when it is softer. However, an important problem that needs to be solved in the form of diffused light trail garden lights is that the surface temperature of the luminous body is too high. Judging from the popular trail garden lights on the market, few products can solve this problem. 2. Calculation of elevation angle and shoulder distance. The calculation of the elevation angle and shoulder distance can achieve a good balance between the functional role and the landscape role. For example, if the elevation angle design takes into account the corresponding landscape design, then it can better reflect the role of the landscape, and it can also be used in the function. To meet people`s needs. Low-position lamps (hole lawn lamp) The first thing that low-level lamps need to pay attention to is the innovation of design concepts, followed by the humanization and diversity of functions. I saw a low-level lamp in Japan. This lamp not only plays the role of lighting and beautification, but also serves as a warning. , It tells passers-by that the front curve is large and there are many people coming and going. Please be careful of motorists and passers-by. In order to achieve the unity of diversified functions and landscape lighting for low-position lamps, it is necessary to introduce the idea of composite design, and achieve the coordination of functional lighting and landscape lighting as much as possible. classification There are many classifications of landscape lights, which can be roughly divided into street lights, foot lights, trail and garden lights, high pole lights, low (lawn) lamps, projection lamps (flooding, small projection lamps), street lamp pole decorative landscape lights, lights Sketch lights, downlights, wall lights, underwater lights, recessed lights, fiber optic lighting systems, solar lamps, etc.

The whole set of solar street lamp includes lamp pole, arm, ground cage, solar panel, solar sleeve bracket, battery, controller, LED lamps and lanterns. The price is determined by the choice of accessories. First: the lamp pole price is mainly affected by its shape, wall thickness, the size of the upper and lower caliber, flange size and plate thickness. The use of integral hot dip galvanizing lamp pole life can reach 20~25 years, is the first choice of customers. Second: the arm price is mainly influenced by the shape and length. Third: the price of the floor cage is determined according to the height of the solar street lamp selected by the customer. The parameters of the floor cage include M14, M16, M18 screw and customized size. The price of the cage is not much different, but mainly to distinguish the diameter of the screw size, many manufacturers will use non-standard size to deceive customers, in order to achieve the purpose of cost savings. Fourth: the solar energy sleeve bracket is mainly customized according to the size of the solar panels, but also need to go through the overall hot dip galvanized treatment to reach the standard, the price of this aspect is basically maintained at about 60 yuan. Fifth: the traditional solar street lamp manufacturers will configure the wattage of the LED lamp, the power of the panel, the voltage and current of the battery and the controller separately according to the requirements of the customer's time to light the lamp at night. There is a wide range in the price of a full set of solar street lamps. For example, the manufacturers will provide you with panels according to the way of sealing glue and the price will be very different. Battery amperage also directly affects the price, because each solar street lamp manufacturer battery suppliers are different, the price is also thousands of different, most of the use of colloid lead acid battery its service life is not very long, and the price is basically more than 10 yuan /Ah, virtually the price will increase a lot.

Communication tower: The communication tower is composed of steel components such as tower body, platform, lightning rod, climbing ladder, antenna support, etc., and is treated with hot-dip galvanizing anti-corrosion treatment. It is mainly used for the transmission and emission of microwave, ultrashort wave, and wireless network signals. product description: In order to ensure the normal operation of the wireless communication system, the communication antenna is generally placed at the highest point to increase the service radius to achieve the ideal communication effect. The communication antenna must have a communication tower to increase the height, so the communication tower plays an important role in the communication network system. The national standard communication tower series products produced by our company have been unanimously praised by the mobile, China Unicom, telecommunications, public security forces and other departments for many years. praise. Technical requirements for communication tower (abbreviated as: communication tower): The bands used in radio broadcasting, communication, navigation, etc. are long wave, medium wave, and short wave. The structure of radio tower masts of various bands can be divided into two major categories: supports and emitters in terms of their functions. The support is used to suspend the antenna wire net, and the emitter uses the mast structure itself as an antenna to emit radio waves. Ultrashort wave is widely used in professional communication fields such as public security, traffic police, fire protection, water conservancy, power supply, military and civil aviation dispatch and plays an important role. Such as: "350" trillion public security "110" command system; "350 trillion" traffic police road command and communication system; "350 trillion" public security fire command system; government water conservancy flood control and drought relief dispatch command system; electrical industry dispatch system; mobile and Unicom communication system It brings great convenience to people's lives, so radio communication (communication) is inseparable from various industries in modern society. Product function: To ensure the normal operation of the radio communication system, the communication antenna must be placed at the highest point to increase the service radius and achieve the desired communication effect. The elevated antenna must be completed by the iron tower. Therefore, the steel structure tower plays an important role in the communication system. product structure: In the construction of modern communication and radio and television signal transmission tower projects, no matter whether the user chooses the ground plane or the roof tower, it will serve as a high communication antenna, increase the service radius of communication or TV transmission signals, and achieve the ideal professional communication effect. In addition, the roof It also has the dual functions of lightning protection and grounding, aviation warning and decoration of the office building. It adopts four-legged self-supporting structure, which conforms to steel structure design specifications. Anti-loss ability: Wind 12/Earthquake 8 Height: 60 meters or more; Weight: 10 tons or more Anti-corrosion treatment: hot-duty zinc; material origin: Baosteel/Shougang/Hanshan Iron and Steel/Tangshan Iron and Steel, etc.

What are the hazards to the LED display caused by poor heat dissipation in the hot summer? The biggest problem currently encountered by LEDs is heat dissipation, and the same is true for LED displays. The power consumption of the LED display is very large, and a considerable part of the energy is wasted on heat. Fever can cause many problems. Why LED display can be widely used, my summary is as follows: 1. Scalability: The larger the LCD screen, the higher the investment in production line equipment. The increase in the size of the LED display is very easy, just like building blocks. The resolution is also convenient to realize according to user needs. 2. Full color: light bulbs, neon lights, etc. are all monochromatic, and LED realizes the combination of RGB three primary colors. 3. High reliability: LED is solid-state lighting with high reliability, unlike neon tubes, bulbs and the like that require vacuum tubes. 4. Long life: The theoretical life of the LED chip can reach 100,000 hours, and the actual life is more than 30,000 hours. 5. Environmentally friendly: LED itself is an energy-saving and pollution-free product. The biggest problem currently encountered by LEDs is heat dissipation, and the same is true for LED displays. The power consumption of the LED display is very large, and a considerable part of the energy is wasted on heat. Fever can cause the following problems: 1. Wavelength drift: Wavelength drift will cause problems in color correction. The wavelength drift of LED is relatively large at low temperature and high temperature. According to experimental data, for every degree of temperature change, the wavelength changes by 0.2-0.3nm. 2. Output brightness reduction: 1% of output brightness changes caused by temperature change per degree Celsius, among which the red light is the most affected. From -40 degrees 180% brightness, to 120 degrees brightness is less than 50%, that is to say, the brightness of the red light is reduced by nearly two-thirds. Relatively speaking, the brightness of blue light and green light has less temperature influence, especially blue light. When the temperature rises, a problem arises. The brightness of LEDs of different colors is not the same. 3. Temperature rise leads to shortened LED life: According to the data of a laboratory in the United States, the junction temperature increased from 63C to 74C, and the LED life decreased from 36,000 hours to 16,000 hours. 4. Too many heat-dissipating components lead to higher system costs. 5. Waste energy and increase user costs. So where does the heat come from? From the power supply to the LED lamp, to the LED driver, and then to the adjustable resistor, the heating part includes the LED lamp, the LED driver, and the LED connection line. Let's take 5V power supply as an example: Power supply voltage: 5V,; LED: LED G/B Vfwd=3.2V, LED R Vfwd=2V 1. The luminous efficiency of LED is about 20%, and LED heating accounts for 50% of total heating 2, controllers and connecting wires account for about 5% of the total heat generation 3. Drive voltage drop: 1.8V(G/B) or 3V(R) voltage drop, the heating of the drive part accounts for more than 45% of the total heating. The heating of the LED lamp needs to improve the luminous efficiency of the LED, the controller and the connecting wire have less heating, and there is not much room for improvement. There is a lot of room for improvement in the heat generation of the driving part, which is also the part we look forward to improving. Leading LED chip companies are stepping up production expansion, inventory rises and prices fall How can the LED display save power? LED display is an energy-saving and environmentally friendly product. The power per square meter is relatively low. The use rate of LED display in the market is getting higher and higher, and the area is getting bigger and bigger. The power consumption of LED display is also an issue that users are more and more concerned about. . How can the LED display save power? As a new type of display technology, the display screen is known for its high brightness and high energy saving. It is displayed by small light-emitting diodes inside, so compared to other display products, it is more power-saving. But it's only relative. If your display is large and colorful, its power consumption per square meter is 300-600W. The power consumption of displays using different technologies varies greatly. Common displays include CRT, LCD, and LED displays. Of these three types of displays, CRT consumes the most power, LCD is the second, and LED is the least. Taking a common ordinary LED display (referring to a liquid crystal display with LED lighting as a backlight), the general power consumption is about 25W. If it is a monochromatic LED display, the power consumption per square meter is about 150-200W per hour, which is also related to your display method. The maximum power consumption of the outdoor LED display (full-color) is about 800W/square, which means that when the outdoor LED display reaches the maximum power (peak) every moment, the power consumption per square hour It will be 0.8 kilowatt-hours of electricity. The maximum power of each board of Shanhong is 25w, 16 boards are counted as one square, and the power consumption is 150-200 W. LED display power consumption calculation: Generally, the maximum power consumption is calculated first by the number of points. As an important part of the power supply system for the LED display, choosing a qualified and reliable power supply can significantly improve the energy-saving effect and service life of the LED display. If the area of the LED display screen is relatively large, it is easy to use energy-saving design. There are two main methods for energy-saving LED display: 1. Installing the screen is to install a multi-function card with a light sensor, so that the LED display can automatically adjust the brightness of the screen according to the outdoor light intensity to achieve energy-saving effects. 2. Energy-saving IC and low-voltage power supply are used in the screen design. According to the formula P=UI, because the screen LED display is driven by a constant current, that is, the current is constant, the voltage drop is reduced, and the power is reduced. It is very important to choose a good LED display manufacturer. It is even more important to choose a professional salesperson in charge. It can help produce professional LED display system solutions, realize the screen functions realized by the customer`s line drafts, and meet the requirements of customers. At the same time, we can consider the problem from the perspective of the customer. Outdoor LED screen allows advertising brand promotion to meet a better vision As an enduring outdoor advertising, its unique advantages and strong brand effect are worthy of investment by many businesses. Since entering the information age, outdoor LED displays have been favored by bustling commercial streets. Suddenly, the outdoor led display seems to have also emerged as a subversion of the traditional image of the urban landscape. With the continuous development of the urban construction process, outdoor led display screens are being used more and more as a new advertising carrier for media. Outdoor led display screens can indeed bring a certain improvement to the image of the city, and the forms of advertising have become flexible and diverse. Outdoor LED displays in world-renowned cities such as Times Square in New York, USA and Ginza in Tokyo, Japan can be called city symbols. It can be seen from this that the development speed and urban status of outdoor led displays can be seen. The rapid development of outdoor advertising LED screens has become the "new favorite" The development of outdoor advertising led large screens has been around for more than ten years. As the effect of commercial agglomeration has increased year by year, their mission to show the image of the city has become more and more important. Outdoor media advertising is not only a manifestation of urban economic and commercial prosperity, but also a microcosm of urban culture and quality. They carry the brand's logo, name, culture and the organic combination of the brand, and have a decisive influence on the communication and shaping of the brand image. There is no doubt that the outdoor advertising led large screen has appropriately become the darling of the new media communication industry. The outdoor LED advertising screen outlines the urban art. They serve as interpreters of the character of the city, region, and business type, for people to experience and perceive, and become city landmarks for people to find the starting point of departure and the end of return journey. In addition, according to relevant agency data, the average weekly arrival rate of outdoor LED display media is 61.8%, the average weekly arrival frequency in business districts is 3.8, and the monthly average arrival rate is 79.3%. 30% of the audience actively pay attention to outdoor LED displays. In the media, the average single gaze of the audience is 15.1 seconds. It is not difficult to see from the above that outdoor LED advertising is closely linked to all areas of our lives, and plays a decisive role in the formation of a good brand image and attracting consumers to participate in the process of brand communication. Outdoor LED screen allows brand promotion to meet a better world Compared with other carriers, outdoor led display screens have outstanding features and advantages. Social progress and technological development provide a good opportunity for the development of led display screens. The led display can really shorten the distance with the audience, make the communication more specific and the marketing more close to the people. LED display can gain a foothold in outdoor advertising media, and its biggest advantage lies in value realization. With its own high-definition seamless splicing, the led display screen instantly kills traditional communication channels with its beautiful and natural picture. Large-sized, dynamic, and animated advertisements can promote the sensory experience of the audience in an all-round way, and effectively convey information to guide consumption. In this marketing era where the people who win the hearts of the people win the world, large led screens can profoundly affect the audience's cognition and consumption philosophy. led display With its own high-definition seamless splicing, the advantages of beautiful and natural pictures instantly kill traditional communication channels. Large-sized, dynamic, and animated advertisements can promote the sensory experience of the audience in an all-round way, and effectively convey information to guide consumption. In this marketing era where people who win the hearts of the people win the world, led big screen Can profoundly affect the audience's cognition and consumption philosophy. In the Internet era, large led screens can be more organically integrated with the Internet for real-time broadcast and timely dissemination. Effectively meet the timeliness and dissemination needs of outdoor media. The application of intelligent mode in the field of outdoor LED advertising screens is also the general trend in the future. The change from quantitative change to qualitative change will not only bring huge development opportunities for the emerging manufacturing industry, including the LED industry, but also indicate the future direction of industrial development. Therefore, in the future, outdoor LED advertising screens will inevitably move forward in a broader and more high-end direction. The development road of LED display As my country`s LED display technology advances by leaps and bounds, and domestic LED companies have emerged, the LED display market is in a "saturated" state. It may be difficult for the market to have explosive growth in the future. LED display companies must rely on their own development technology. Competing for market share, China's LED display industry will face a "big reshuffle." Under this general background, there are two more obvious development characteristics. One, fine points In recent years, a market segment of the LED display industry has gradually formed. There have been some small and medium-sized display companies that have outstanding performance in a small area of LED display. Not only that, several leading LED display companies have used their subsidiaries to develop LED displays. The layout of the category market is becoming clearer. They have accumulated a relatively solid brand foundation in their main subdivisions. These all indicate that the LED screen industry is forming a situation of finely divided display types, and the growth of large brands is very strong and strategic. Therefore, if the next successful small and medium-sized enterprise want to do, it must quickly strive for a favorable brand positioning in the sub-category, and achieve the ultimate in that sub-product, otherwise there will be a scene of competition with the field that the opponent is familiar with. . Two, upgrade Although companies that have been subdivided into product categories have developed strongly, the challengers are the most indispensable in China. Because products of the same type are undergoing diversified development in both hardware facilities and solutions. Especially in the field of small-pitch LED displays. The innovation and upgrading of products, the extreme division of categories, and the competition of brand reputation have formed an unstoppable situation. The continuous upgrading of products indicates that the low-end equipment in many industries will not be able to meet the production needs of the current products. Even if some manufacturers have now replaced their production equipment, they will still face pressure on production capacity, whether there is enough production capacity to support the reduction cost. The differentiated market is further segmented, and fierce competition has increased the speed of product upgrades, and it has also prompted companies to rack their brains to make the ultimate product and application segmentation. This will become a major development trend of the next industry. From the perspective of the current industrial structure, my country`s LED display screens have gradually changed in recent years. Specialized division of labor in the industry is taking shape: manufacturers focusing on display production, market channel sellers, engineering installation after-sales service operators, etc. With the emergence of specialized enterprises, a situation of clear division of labor, close cooperation, and win-win development is taking shape. Specialized division of labor is conducive to becoming more refined, larger, and stronger, and has a positive significance in promoting the healthy development of the entire industry. At the same time, in this process, with the continuous optimization and development of the industry, terminal products will be more diversified and refined, and the market will also pass rounds of competition and elimination, and finally form several leading screen companies and many " "High-precision and specialized" enterprises dominate the overall situation, and the pattern of a group of small and medium-sized enterprises competing for the remaining market will be a big leap forward for the entire LED display industry.

Numerical control machining (numerical control machining) refers to a process method for processing parts on a CNC machine tool. The process regulations of CNC machine tool processing and traditional machine tool processing are generally consistent, but significant changes have also taken place. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable parts, small batches, complex shapes, and high precision, and to achieve high-efficiency and automated processing. Interpretation: Numerical control processing refers to the processing in which the control system issues instructions to make the tool perform various movements that meet the requirements, and expresses the shape and size of the workpiece in the form of numbers and letters, as well as processing requirements. It generally refers to the process of processing parts on CNC machine tools. A CNC machine tool is a machine tool controlled by a computer. The computer used to control the machine tool, whether it is a special computer or a general-purpose computer, is collectively called a CNC system. The movement and auxiliary actions of the CNC machine tool are controlled by the instructions issued by the CNC system. The instructions of the numerical control system are compiled by the programmer according to the material of the workpiece, the processing requirements, the characteristics of the machine tool, and the instruction format (numerical control language or symbols) prescribed by the system. The numerical control system sends out operation or termination information to the servo device and other functional components according to the program instructions to control various movements of the machine tool. When the part processing program ends, the machine tool will automatically stop. For any kind of CNC machine tool, if there is no program command input in its CNC system, the CNC machine tool cannot work. The controlled actions of the machine tool roughly include the start and stop of the machine tool; the start and stop of the spindle, the conversion of the rotation direction and the speed; the direction, speed, and mode of the feed movement; the selection of the tool, the compensation of the length and the radius; the replacement of the tool, and the cooling The opening and closing of the liquid. Development Background: Numerical control technology originated from the needs of the aviation industry and was proposed by a US helicopter company in the late 1940s. The initial idea of CNC machine tools, the Massachusetts Institute of Technology developed a three-axis CNC milling machine in 1952. This kind of CNC milling machine has been used for processing aircraft parts in the mid-1950s. In the 1960s, numerical control systems and programming work became increasingly mature and perfect. CNC machine tools have been used in various industrial sectors, but the aerospace industry has always been the largest user of CNC machine tools. Some large aviation factories are equipped with hundreds of CNC machine tools, of which cutting machines are the main ones. CNC machining parts include integral wall panels, beams, skins, bulkheads, propellers, and aircraft engine casings, shafts, disks, blades, and special cavity surfaces of liquid rocket engine combustion chambers. . The initial stage of the development of CNC machine tools is based on continuous trajectory CNC machine tools, continuous trajectory control. Continuous trajectory control is also called contour control, which requires the tool to move on a prescribed trajectory relative to the part. Later, we will vigorously develop point-control CNC machine tools. Point control means that the tool moves from one point to another, as long as it can reach the target accurately at the end, regardless of the moving route. Operation process: NC programming There are manual (manual) programming and automatic programming methods for NC machining programming. Manual programming, the entire content of the program is manually written in accordance with the instruction format specified by the CNC system. Automatic programming is computer programming, which can be divided into automatic programming methods based on language and drawing. However, no matter what kind of automatic programming method is adopted, corresponding hardware and software are required. It can be seen that the realization of CNC machining programming is the key. But programming alone is not enough. CNC machining also includes a series of preparatory work that must be done before programming and the aftermath of programming. Generally speaking, the main contents of CNC machining process are as follows: ⑴ Select and confirm the parts and contents for CNC machining; ⑵ Process analysis of CNC machining of parts drawings; ⑶ Process design of CNC machining; ⑷ Mathematics processing of parts drawings; ⑸ Compile the processing procedure list; ⑹ Make the control medium according to the procedure list; ⑺ Check and modify the program; ⑻ Trial processing of the first piece and on-site problem handling; ⑼The finalization and filing of CNC machining process documents. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. For example, computer numerical control, that is, a small or microcomputer is used to replace the controller in the numerical control system, and the software stored in the computer is used to perform calculation and control functions. This soft-connected numerical control system is gradually replacing the initial state of the numerical control system. Direct numerical control uses one computer to directly control multiple numerical control machine tools, which is very suitable for small batch and short cycle production of aircraft. The ideal control system is an adaptive control system that can continuously change processing parameters. Although the system itself is complex and expensive, it can improve processing efficiency and quality. In addition to the improvement of CNC systems and machine tools in terms of hardware, the development of CNC has another important aspect that is the development of software. Computer-aided programming (also called automatic programming) means that after a programmer writes a program in numerical control language, it is input into the computer for translation, and finally the computer automatically outputs punched tape or tape. The most widely used CNC language is the APT language. It is roughly divided into main processing program and post processing program. The former translates the program written by the programmer to calculate the tool path; the latter compiles the tool path into the part processing program of the CNC machine tool. Numerical control processing is to write programs on the computer before processing the workpiece, and then input these programs into the machine tool controlled by the computer program for instructional processing, or write instructions directly on the machine tool control panel controlled by the computer program For processing. The machining process includes: tool moving, tool change, speed change, direction change, parking, etc., all of which are completed automatically. CNC machining is an advanced method of modern mold manufacturing and processing. Of course, CNC machining methods must not only be used for mold parts processing, but also have a wide range of uses. Process analysis The technical issues of CNC machining of the processed parts involve a wide range of aspects. The following combines the possibility and convenience of programming to put forward some main contents that must be analyzed and reviewed. 1. The dimensioning should conform to the characteristics of CNC machining In CNC programming, the size and position of all points, lines, and surfaces are based on the programming origin. Therefore, it is best to give the coordinate size directly on the part drawing, or try to quote the size with the same datum. 2. The conditions of geometric elements should be complete and accurate In the programming, the programmer must fully grasp the geometric element parameters that constitute the contour of the part and the relationship between the geometric elements. Because all geometric elements of the contour of the part must be defined during automatic programming, the coordinates of each node must be calculated during manual programming. No matter which point is unclear or uncertain, programming cannot be carried out. However, due to inadequate consideration or neglect by part designers in the design process, there are often incomplete or unclear parameters, such as arc and straight line, arc and arc whether they are tangent or intersected or separated. Therefore, when reviewing and analyzing the drawings, you must be careful and contact the designer in time if you find any problems. 3. Reliable positioning reference In CNC machining, the machining processes are often concentrated, and it is very important to locate them on the same basis. Therefore, it is often necessary to set some auxiliary datums, or add some process bosses on the blank. 4. Uniform geometry type or size It is better to adopt a uniform geometric type or size for the shape and inner cavity of the part, so that the number of tool changes can be reduced, and it is also possible to apply a control program or a special program to shorten the length of the program. The shape of the parts is as symmetrical as possible, which is convenient for programming with the mirror machining function of the CNC machine tool to save programming time. Part clamping 1. The basic principles of positioning and installation When machining parts on a CNC machine tool, the basic principle of positioning and installation is to choose a reasonable positioning datum and clamping plan. Pay attention to the following points when choosing: 1. Strive to unify the benchmarks of design, process and programming calculations. 2. Minimize the number of clamping times, and process all the surfaces to be processed after positioning and clamping once as much as possible. 3. Avoid the use of machine-occupied manual adjustment processing schemes to give full play to the effectiveness of CNC machine tools. Second, the basic principles of choosing fixtures The characteristics of CNC machining put forward two basic requirements for the fixture: one is to ensure that the coordinate direction of the fixture is relatively fixed with the coordinate direction of the machine tool; the other is to coordinate the size relationship between the parts and the machine coordinate system. In addition, the following points should be considered: 1. When the batch of parts is not large, modular fixtures, adjustable fixtures and other general fixtures should be used as much as possible to shorten production preparation time and save production costs. 2. Only consider the use of special fixtures during mass production, and strive to have a simple structure. 3. The loading and unloading of parts should be fast, convenient and reliable to shorten the machine stop time. 4. The parts on the fixture should not hinder the machining of the surface of the parts by the machine tool, that is, the fixture should be open, and its positioning and clamping mechanism components should not affect the knife during processing (such as collisions, etc.). Machining error Numerical control machining error △ addition is formed by programming error △ editing, machine tool error △ machine, positioning error △ fixed, tool setting error △ tool and other errors. Namely: △number plus=f (△editing+△machine+△fixed+△tool) among them: 1. Programming error △ is composed of approximation error δ and rounding error. The approximation error δ is produced in the process of approximating a non-circular curve with a straight line segment or a circular arc segment, as shown in Figure 1.43. The rounding error is the error produced by rounding the coordinate value to an integer pulse equivalent value during data processing. Pulse equivalent refers to the displacement of each unit pulse corresponding to the coordinate axis. Normal-precision CNC machine tools generally have a pulse equivalent value of 0.01mm; more precise CNC machine tools have a pulse equivalent value of 0.005mm or 0.001mm, etc. 2. The error of the machine tool is caused by the error of the CNC system and the feed system. 3. The positioning error △ is always caused when the workpiece is positioned on the fixture and the fixture is positioned on the machine tool. 4. Tool setting error △ tool is generated when determining the relative position of the tool and the workpiece. main feature: CNC machine tools select aircraft parts with complex profiles as the processing objects from the very beginning, which is the key to solving the difficulty of ordinary processing methods. The biggest feature of CNC machining is the use of punched tape (or tape) to control the machine tool for automatic processing. Because airplanes, rockets, and engine parts have different characteristics: airplanes and rockets have zero parts, large component sizes, and complex shapes; engine zero, small component sizes, and high precision. Therefore, the CNC machine tools selected by the aircraft and rocket manufacturing departments and the engine manufacturing departments are different. In aircraft and rocket manufacturing, large-scale CNC milling machines with continuous control are mainly used, while in engine manufacturing, both continuous-control CNC machine tools and point-control CNC machine tools (such as CNC drilling machines, CNC boring machines, machining centers, etc.) are used. . Process concentration CNC machine tools generally have tool holders and tool magazines that can automatically change tools. The tool change process is automatically carried out under program control. Therefore, the process is relatively concentrated. Process concentration brings huge economic benefits: ⑴ Reduce the floor space of the machine tool and save the workshop. ⑵Reduce or no intermediate links (such as intermediate inspection of semi-finished products, temporary storage and handling, etc.), which saves time and manpower. automation No need to manually control the cutting tools during CNC machine processing, and the degree of automation is high. The benefits are obvious. ⑴ Reduced requirements for operating workers: A senior worker of an ordinary machine tool cannot be trained in a short time, and a CNC worker who does not need programming has a very short training time (for example, a CNC lathe worker needs one week, and he will write simple processing programs). In addition, the parts processed by CNC workers on CNC machine tools have higher precision than those processed by ordinary workers on traditional machine tools, and it takes less time. ⑵Reduce the labor intensity of workers: CNC workers are excluded from the processing most of the time during the processing, which is very labor-saving. ⑶ Stable product quality: The processing automation of CNC machine tools eliminates the fatigue, carelessness, estimation and other human errors of workers on ordinary machine tools, and improves the consistency of products. ⑷High processing efficiency: The automatic tool change of the CNC machine tool makes the processing process compact and improves labor productivity. High flexibility Although the traditional general-purpose machine tool is flexible, it is inefficient; while the traditional special machine is highly efficient, but has poor adaptability to parts, high rigidity and poor flexibility, and it is difficult to adapt to the fierce competition in the market economy. Products are frequently remodeled. As long as the program is changed, new parts can be processed on the CNC machine tool, and it can be automated, with good flexibility and high efficiency. Therefore, the CNC machine tool can well adapt to market competition. strong ability The machine tool can accurately process various contours, and some contours cannot be machined on ordinary machine tools. CNC machine tools are especially suitable for the following occasions: 1. Parts that are not allowed to be scrapped. 2. Development of new products. 3. Processing of urgently needed parts.

What is CNC Traditional mechanical processing is performed by manual operation of ordinary machine tools. During processing, the mechanical tool is shaken by hand to cut metal, and the accuracy of the product is measured by the eye with tools such as calipers. Modern industry has already used computer digitally controlled machine tools for operations. CNC machine tools can automatically process any products and parts directly in accordance with the procedures programmed by technicians in advance. This is what we call "CNC machining". Numerical control processing is widely used in any field of all mechanical processing, and it is the development trend and important and necessary technical means of mold processing. "CNC" is the abbreviation of Computerized Numerical Control in English. The CNC machine tool automatically processes the processed parts according to the pre-programmed processing program. We put the part's machining process route, process parameters, tool motion trajectory, displacement, cutting parameters (spindle revolutions, feed, back tooling, etc.) and auxiliary functions (tool change, spindle forward, reverse, etc.) Cutting fluid on, off, etc.), according to the instruction code and program format specified by the CNC machine tool, write a processing program list, and then record the content of the program list on the control medium (such as punched paper tape, magnetic tape, disk, magnetic bubble memory) ), and then input into the numerical control device of the numerical control machine tool to command the machine tool to volley the parts. This whole process from the analysis of the part drawing to the preparation of the control medium is called the compilation of the NC program. The difference between CNC machine tools and ordinary machine tools processing parts is that CNC machine tools automatically process parts according to the program, while ordinary machine tools must be operated by humans. We can achieve the purpose of processing different parts by changing the program that controls the motion of the machine tool. Therefore, CNC machine tools are particularly suitable for processing small batches of parts with complex shapes and high precision requirements. Since the CNC machine tool must process the parts according to the program, after the programmer has compiled the program, it is input into the CNC device to command the work of the machine tool. The input of the program is through the control medium. development trend: The application of numerical control technology has not only brought revolutionary changes to the traditional manufacturing industry, and made the manufacturing industry a symbol of industrialization, but also with the continuous development of numerical control technology and the expansion of application fields, it is important to the international people`s livelihood in some important industries such as national defense, automobile, etc. The development of these industries is playing an increasingly important role. The digitization of equipment in these industries has become a major trend of modern development, such as: bridge-type three- and five-axis high-speed CNC gantry milling machines, gantry mobile five-coordinate AC swing-angle CNC gantry milling machines, gantry mobile Type three-coordinate CNC gantry milling machine, etc. Rapid development With the progress of the core processor of the numerical control system, the current high-speed machining center feed speed can reach up to 80m/min, and the dry running speed can reach about 100m/min. Many automobile factories in the world, including my country's Shanghai General Motors Corporation, have already replaced modular machine tools with production lines composed of high-speed machining centers. The HyperMach machine tool of American CINCINNATI has a maximum feed rate of 60m/min, a rapid rate of 100m/min, an acceleration of 2g, and a spindle speed of 60000r/min. It only takes 30 minutes to process a thin-walled aircraft part, while the same part needs 3 hours to process on a general high-speed milling machine and 8 hours to process on a general milling machine. Due to the specialization of the division of labor of the various components of the mechanism, under the development of professional spindle factories, the high-speed spindles are becoming more and more popular. In the past, the models used only for high-speed automotive industry (models with more than 15,000 revolutions per minute) have become essential mechanical product requirements. Precision development With the advancement of servo control technology and sensor technology, under the control of the CNC system, the machine tool can perform sub-micron precise motion. In terms of machining accuracy, the machining accuracy of ordinary CNC machine tools has been increased from 10μm to 5μm, and the precision machining center has increased from 3~5μm to 1~1.5μm, and the ultra-precision machining accuracy has begun to enter the nanometer level (0.01μm) . Open development Due to the standardization and modularization of computer hardware and software modularization, open technology has become increasingly mature, and it has begun to enter the stage of openness. The open CNC technology system has better versatility, flexibility, adaptability and scalability. The United States, the European Community, Japan and other countries have implemented strategic development plans, and carried out the research and formulation of open system system CNC system specifications (OMAC, OSACA, OSEC). The three largest economies in the world have carried out almost the same in a short period of time. The formulation of the scientific plan and technical specifications heralded the advent of a new period of change in CNC technology. In 2000, my country also began to study and formulate the normative framework of China's ONC CNC system. Compound development With the complexity of the product appearance curve, the mold processing technology must be continuously upgraded, which puts forward new demands on the numerical control system. The five-axis machining and six-axis machining of machine tools have become increasingly popular, and the compounding of machine tool processing has become an inevitable development trend. New Nihon Koki's 5-sided machining machine adopts a composite spindle head, which can realize the machining of 4 vertical planes and the machining of any angle, so that 5-face machining and 5-axis machining can be realized on the same machine tool, and it can also realize inclined surface and Machining of inverted taper holes. German DMG company exhibited the DMUVoution series machining center, which can process 5-sides and 5-axis linkage processing in one clamping, and can be controlled by CNC system or CAD/CAM directly or indirectly. Selection of CNC lathe CNC lathes, also known as CNC lathes, are computer numerically controlled lathes. They are currently the most widely used and covered CNC machine tools in China, accounting for about 25% of the total number of CNC machine tools. CNC machine tools are mechatronics products that integrate multiple technologies such as machinery, electricity, hydraulics, pneumatics, microelectronics, and information. It is a working mother machine with the advantages of high precision, high efficiency, high automation, high flexibility, stable and reliable processing quality in mechanical manufacturing equipment. The technical level of CNC machine tools and their percentage of machine tool output and total ownership is one of the important indicators to measure the overall level of a country's national economic development and industrial manufacturing. CNC lathe is one of the main varieties of CNC machine tools. It occupies a very important position in CNC machine tools. For decades, it has been widely valued by countries all over the world and has been rapidly developed. CNC lathes and turning centers are high-precision and high-efficiency automated machine tools. It has a wide range of machining performance, and can process straight cylinders, oblique cylinders, arcs and various threads. It has various compensation functions of linear interpolation and circular interpolation, and has played a good economic effect in the mass production of complex parts. Reasonable selection of CNC lathes should follow the following principles: Selection principle 1. Preparation Determine the process requirements of typical parts and the batch of processed workpieces. The function that the CNC lathe should have is to make preparations and the prerequisites for reasonable selection of CNC lathes. Meet the process requirements of typical parts The process requirements of typical parts are mainly the structural size, processing range and accuracy requirements of the parts. According to the accuracy requirements, that is, the dimensional accuracy, positioning accuracy and surface roughness of the workpiece, the control accuracy of the CNC lathe is selected. Choose based on reliability. Reliability is a guarantee for improving product quality and production efficiency. The reliability of a CNC machine tool means that the machine tool runs stably for a long time without failure when it performs its functions under specified conditions. That is, the mean time between failures is long, even if there is a failure, it can be restored in a short time and put into use again. Choose machine tools with reasonable structure, well-manufactured, and mass-produced machines. Generally, the more users, the higher the reliability of the CNC system. 2. Purchase Machine tool accessories, spare parts and their supply capacity, cutting tools, are very important for CNC lathes and turning centers that have been put into production. When choosing a machine tool, carefully consider the compatibility of tools and accessories. 3. Focus on the identity of the control system Manufacturers generally choose products from the same manufacturer, and at least buy the control system of the same manufacturer, which brings great convenience to the maintenance work. Teaching units require students to be knowledgeable and knowledgeable, so it is a wise choice to choose different systems and to equip them with various simulation software. 4. Choose according to the performance-price ratio Make sure that the functions and accuracy are not idle, not wasted, and do not choose functions that have nothing to do with your own needs. 5. Protection of machine tools When needed, the machine tool can be equipped with fully enclosed or semi-enclosed protective devices and automatic chip removal devices. When choosing CNC lathes and turning centers, the above principles should be considered comprehensively.

Common types of communication towers are angle steel towers, single-tube towers, landscape towers, guyed towers, beautification towers, poles, etc. The communication corner steel tower is composed of tower shoes, tower body, lightning rod, platform, climbing frame, antenna support, feeder frame and lightning down conductor. The single-tube tower can adapt to the installation of a variety of complex sites in the field. The landscape tower integrates communication, lighting, landscape and other functions into one, making it easy to select a site. Production Process: The communication tower is composed of steel components such as tower body, platform, lightning rod, climbing ladder, antenna support, etc., and is treated with hot-dip galvanizing anticorrosive treatment. It is mainly used for the transmission and emission of microwave, ultrashort wave, and wireless network signals. In order to ensure the normal operation of the wireless communication system, the communication antenna is generally placed at the highest point to increase the service radius to achieve the ideal communication effect. The communication antenna must have a communication tower to increase the height, so the communication tower plays an important role in the communication network system. The national standard communication tower series products produced by our company have been praised by China Mobile, China Unicom, telecommunications, public security forces and other departments for many years. praise. Features of communication tower: Communication tower is a kind of signal transmission tower, also called signal transmission tower or signal tower. Its main function supports signal transmission and supports signal transmission antennas. Use Mobile/Unicom/Traffic Satellite Positioning System (GPS) and other communications departments. Communication tower features: In the construction of modern communication and radio and television signal transmission tower projects, no matter whether the user chooses the ground plane or the roof tower, it can serve as a high communication antenna, increase the communication or TV transmission signal service radius, and achieve the ideal professional communication effect In addition, the roof also serves as the lightning protection grounding and aviation warning of the building.

Floodlight, English name: Floodlight Floodlight is a point light source that can evenly illuminate in all directions. Its illumination range can be adjusted arbitrarily, and it appears as a regular octahedron icon in the scene. Floodlights are the most widely used light source in the production of renderings. Standard floodlights are used to illuminate the entire scene. Multiple floodlights can be used in the scene. In order to produce better results, the light bulb for shooting is installed in a large reflecting umbrella for use as a high-brightness diffuse light source. Although it is indispensable for indoor lighting, it can also be regarded as one of the light sources with good lighting effects for ordinary amateur indoor photography. Introduction: Floodlights are not spotlights, projection lights, or spotlights. Floodlights produce highly diffuse, non-directional light instead of a clear beam of light, so the shadows produced are soft and transparent. When used for object lighting, the rate of light reduction is much slower than when using spotlights. There are even some floodlights with very slow decay that look like a light source that does not produce shadows. The spotlight projects a directional, well-defined beam to illuminate a specific area. material: The lamp body material is aluminum alloy die-casting and electrostatic spraying surface treatment. The layer is resistant to high temperature, acid and alkali, and anti-aging. The lamp body adopts the integrated design of light source and electrical appliances, compact structure, small volume, and imported high-purity aluminum material for the reflector. Reflective surface design, forming a variety of different needs of light distribution, high luminous efficiency, small glare light source can be based on customer needs, you can use single-ended or double-ended metal halide lamp or high-pressure sodium lamp head using E40 or RX7s mask is 5mm tempered glass, Safety, high temperature resistance, high strength, good light transmittance The sealing strip is anti-corrosion silicone rubber seal, which has good sealing, waterproof and dustproof application of high-performance inductive ballasts, triggers and capacitors to ensure that the electrical performance of the lamps meets the requirements of the national standard. The line is 1mm2PVC and is suitable for signs, stadiums, squares, trees, billboards, parking lots, building exterior walls, etc. Features: Floodlights have been recognized by more and more people as a replacement product of electric light sources, and they have also been used in many fields. Its main features are as follows: 1. Long lifespan: General incandescent lamps, fluorescent lamps, energy-saving lamps, and other gas discharge lamps have filaments or electrodes, and the sputtering effect of filaments or electrodes is an inevitable component that limits the life of the lamp. High-frequency electrodeless discharge lamps require no or less maintenance and are highly reliable. The service life is as high as 60,000 hours (calculated as 10 hours per day, the service life can reach more than 10 years). Compared with other lamps: 60 times that of incandescent lamps; 12 times that of energy-saving lamps; 12 times that of fluorescent lamps; 20 times of high-pressure mercury lamps; the long life of floodlights greatly reduces maintenance troubles and replacement times , Saving material costs and labor costs, and can ensure long-term normal use. Because the floodlight has no electrodes, it emits light by combining the principle of electromagnetic induction and the principle of fluorescent discharge, so it does not have inevitable components that limit its life. The service life is only determined by the quality level of electronic components, circuit design and foam manufacturing process. Generally, the service life can reach 60,000 to 100,000 hours. 2. Energy saving: Compared with incandescent lamps, energy saving is about 75%. The luminous flux of 85W floodlights is roughly equivalent to that of 500W incandescent lamps. 3. Environmental protection: It uses solid amalgam, even if it is broken, it will not pollute the environment. It has a recoverable rate of more than 99%, and it is a truly environmentally friendly green light source. 4. No stroboscopic: Because of its high working frequency, it is regarded as "no stroboscopic effect", will not cause eye fatigue and protect eye health. 5. Good color rendering: the color rendering index is greater than 80, the light color is soft, showing the natural color of the illuminated object. 6. Optional color temperature: from 2700K to 6500K, customers can choose according to their needs, and can be made into colored light bulbs for garden decoration lighting. 7. High proportion of visible light: In the emitted light, the proportion of visible light is more than 80%, and the visual effect is good. 8. No preheating is required. It can be started and restarted immediately, and the light decay phenomenon in ordinary discharge lamps with electrodes will not be caused by multiple switching. 9. Excellent electrical performance: high power factor, low current harmonics, constant voltage power supply, and constant luminous flux output. 10. Installation adaptability: It can be installed in any position without restriction. application: Floodlights illuminate objects uniformly in all directions from a specific point. It is best to use it to simulate light bulbs and candles. Main application scope: billboards, highways, railway tunnels, bridges and culverts, squares, buildings, etc. omni: Floodlight is a kind of "point light source" that can illuminate evenly in all directions. Its illumination range can be adjusted arbitrarily, and it can cast shadows on objects. Floodlights are the most widely used light source in renderings. "Standard floodlights" are used to illuminate the entire scene without any specific range. Multiple floodlights can be used in the scene to coordinate their effects to produce better results. It should be noted that floodlights cannot be built too much, otherwise the renderings will appear flat and dull. Therefore, in the usual rendering of renderings, pay more attention to the impact of lighting parameters and layout on the light perception of the entire renderings scene, accumulate more experience, and master the lighting matching skills.

The lighting project is also called the urban brilliance project, which refers to the lighting of shopping malls, tourist attractions, and streets with heavy traffic in order to beautify the urban environment and improve the overall image of the city. What issues should be paid attention to when implementing the building LED lighting project: 1) Choose different lighting schemes according to different uses of the building Office buildings and office buildings are public spaces for business people. The lighting needs to show a sense of high-end fashion; commercial buildings, shopping malls and other commercial scenes are crowded with people. The lighting project can use the glass curtain wall LED display to enhance the commercial value of the glass curtain wall of the building. Brighten the image of the city, disseminate urban culture and advertising information; as long as the lighting project of private residential buildings creates a feeling of warmth and friendship for the family, some warm-toned lamps can be used to set off a warm and harmonious atmosphere. 2) Choose different lighting products according to the lighting area and viewing distance The lighting area is different, the viewing distance is different, and the browsing visual experience is different, which affects the tools used in building body lighting. Glass curtain wall LED display (also known as transparent LED display), LED light bar screen, LED digital tube and other lighting products show obvious differences in effects. When choosing lighting products, you should adapt to local conditions and choose the best solution. 3) Choose different lighting schemes according to the cost budget Generally speaking, building LED lighting projects are generally large in area, often thousands of ways, and the total adds up to a huge cost. Investors should choose a suitable lighting plan based on their own cost budget, and use various lighting products in a reasonable combination to avoid extravagance and waste, resulting in unnecessary losses of resources. The building LED lighting project is not only to beautify the appearance of the building, but also to change the city's night landscape environment. The colorful buildings make the city's night sky shining with stars. At the same time, the building LED lighting project is also an improvement to our living environment. In the black night sky, if you can see buildings in different colors, you can not only highlight the characteristics of the building, but also demonstrate the corporate culture and strength. Four major technical points of led building lighting: 1. The balance and harmony of light and dark In layman's terms, it means "be bright if it should be bright, and not bright if it shouldn't be bright." In a sense, the value of night scene lighting is to seek the balance and harmony between light and darkness, so that "the ones that should be bright are bright, and the ones that shouldn't be bright are not bright", so as to show people that the city is brightened at night. The lighting project that every city must carry out. The lighting of the city not only greatly improves the image of the city, but also plays an important role in the development of the city`s tourism. Regardless of the starting point, the principle of lighting must be followed. Only through a good design and showing it can the meaning of existence be reflected to a certain extent. Otherwise, not only will it not be able to improve the effect of the city's lighting, but it will also not add points to the city's image. Yangguang lighting creates a unique and charming landscape. 2. Balance and harmony To achieve the balance and harmony between light and dark, it is first necessary to systematically grasp the night landscape. The night landscape is also a landscape system. When the design positioning or theme is established, the various components that make up the night landscape system need to be positioned or arranged separately. Which part should be bright? Which part should not be bright? What brightness should the bright part be? What should not be bright How much brightness does it need to hide or give? Through overall planning, various landscape elements can be bright and dark at night, bright or light, and form a whole night landscape. 3. Analysis of urban lighting project For example, for a building, its different parts or elements can be all illuminated in a simplified way, and it also needs to "light up the parts that should be bright, and make the parts that shouldn't be unlit". Finally, the balance and harmony between light and dark is the "contrast" of brightness in terms of technical indicators. Contrast quantifies and standardizes the balance and harmony of brightness. Therefore, when lighting designers design, they need to introduce the brightness index of contrast to ensure the balance and harmony of light and dark. 4. Urban lighting generally includes Design and implement lighting projects for city squares, commercial and cultural streets, tourist landscapes, monumental buildings, historical buildings, cultural buildings, major government office buildings and traffic buildings, with advanced floodlighting equipment to showcase their richness at night Colorful, clear levels, and distinctive features of the light image, build some high-grade, good-quality, and light environment places that are compatible with the city`s image, which can well set off the solemn, cordial and elegant style of the city`s central area, making the city more Strong sense of the times, thereby increasing the attractiveness of urban space, and fully expressing the urban environmental cultural information and its architectural aesthetics. Therefore, the use of lighting to improve the city`s night landscape will have a positive impact on the development of urban tourism and the improvement of the living environment, and it will bring great social benefits to the city.

The full name of the solar controller is the solar charge and discharge controller. It is an automatic control device used in the solar power generation system to control the multi-channel solar cell array to charge the battery and the battery to supply power to the solar inverter load. It regulates and controls the charging and discharging conditions of the battery, and controls the power output of the solar cell components and the battery to the load according to the power demand of the load. It is the core control part of the entire photovoltaic power supply system. Introduction: The solar control system consists of solar panels, batteries, controllers and loads. The solar controller is a device used to control the photovoltaic panel to charge the battery and provide the load control voltage for the voltage sensitive equipment. It regulates and controls the charging and discharging conditions of the battery, and controls the power output of the solar cell components and the battery to the load in accordance with the power demand of the load. It is the core control part of the entire photovoltaic power supply system. It is specially designed for the power supply system of communication or monitoring equipment in remote areas. The controller's charge control and load control voltages are fully adjustable, and can display battery voltage, load voltage, solar array voltage, charging current and load current. Almost all solar power generation systems powered by batteries require a solar charge and discharge controller. The role of the solar charge and discharge controller is to adjust the power, the power delivered from the solar panel to the battery. The overcharge of the battery can at least significantly reduce the battery life, from the worst to damage the battery until it cannot be used normally. The solar controller uses a high-speed CPU microprocessor and a high-precision A/D analog-to-digital converter. It is a microcomputer data acquisition and monitoring control system. It not only can quickly collect the current working status of the photovoltaic system in real time, obtain the working information of the PV station at any time, but also accumulate the historical data of the PV station in detail, which provides an accurate and accurate method for evaluating the rationality of the PV system design and the reliability of the quality of the inspection system components. Sufficient basis. In addition, the solar controller also has a serial communication data transmission function, which can centrally manage and remotely control multiple photovoltaic system sub-stations. Solar controllers usually have 6 nominal voltage levels: 12V, 24V, 48V, 110V, 220V, 600V. At present, the controller is developing towards multi-function, and there is a trend to integrate the traditional control part, inverter and monitoring system. effect: The most basic function of the solar charge and discharge controller is to control the battery voltage and open the circuit, and that is, when the battery voltage rises to a certain level, it stops the battery charging. The old version of the controller mechanically completes the opening or closing of the control circuit, stopping or starting the power delivered to the battery by the power supply. In most photovoltaic systems, a controller is used to protect the battery from overcharging or over-discharging. Overcharging may vaporize the electrolyte in the battery and cause malfunctions, while overdischarging the battery may cause premature battery failure. Both overcharge and overdischarge may damage the load. Therefore, the controller is one of the core components of the photovoltaic power generation system and the main part of the BOS (Balance of System). Simply put, the functions of the solar controller can be divided into: 1. Power adjustment function; 2. Communication function: 1 simple indication function 2 protocol communication function such as RS485 Ethernet, wireless and other forms of background management; 3. Perfect protection function: electrical protection reverse connection, short circuit, over current, etc. principle: Solar panels are photovoltaic devices (the main part is semiconductor materials). After being irradiated by light, the photovoltaic effect generates electric current. Due to the properties and limitations of materials and light, the generated current is also a volatile curve. If the generated current is directly charged into the battery or directly supplies power to the load, it will easily cause damage to the battery and the load. Reduced their lifespan. Therefore, we must first send the current to the solar controller, use a series of dedicated chip circuits to digitally adjust it, add multi-level charge and discharge protection, and use our unique control technology "adaptive three-stage charging mode (Figure 1)" to ensure the safety and service life of the battery and load. When supplying power to the load, the current of the battery is also allowed to flow into the solar controller first, and after its adjustment, the current is sent to the load. The purpose of this is: one is to stabilize the discharge current; the other is to ensure that the battery is not over-discharged; the third is to carry out a series of monitoring and protection on the load and the battery. If you want to use AC power equipment, you also need to add an inverter before the load to convert to AC. main feature: 1. Using single-chip microcomputer and special software to realize intelligent control; 2. Accurate discharge control using battery discharge rate characteristic correction. The end-of-discharge voltage is the control point corrected by the discharge rate curve, which eliminates the inaccuracy of the over-discharge of simple voltage control, and conforms to the inherent characteristics of the battery, that is, different discharge rates have different end voltages; 3. With automatic control of overcharge, overdischarge, electronic short circuit, overload protection, unique anti-reverse connection protection, etc.; none of the above protections will damage any parts, and will not burn insurance; 4. The series PWM charging main circuit is adopted, which reduces the voltage loss of the charging circuit by nearly half compared with the charging circuit using diodes, and the charging efficiency is 3%-6% higher than that of non-PWM, which increases the power consumption time; improves over-discharge recovery Charging, normal direct charging, and automatic floating charging control methods make the system have a longer service life; at the same time it has high-precision temperature compensation; 5. The intuitive LED luminous tube indicates the current battery status, allowing users to understand the usage status; 6. All controls use industrial-grade chips (only for industrial-grade controllers with I), which can run freely in cold, high temperature, and humid environments. At the same time, the crystal oscillator timing control is used, and the timing control is accurate; 7. The potentiometer adjustment control set point is cancelled, and the E-square memory is used to record each work control point, which digitizes the setting, and eliminates the error of the control point due to the vibration of the potentiometer, temperature drift, etc. The accuracy and reliability of the control point are reduced. Sexual factor 8. The digital LED display and settings are used, and all settings can be completed by one-key operation. It is extremely convenient and intuitive to use to control the working status of the entire system, and to protect the battery from overcharge and overdischarge. In places with large temperature differences, a qualified controller should also have the function of temperature compensation. Other additional functions such as light control switch and time control switch should be optional options of the controller. mode: 1. Pure light control mode: when there is no sunlight, the light intensity drops to the starting point. After the controller confirms the start signal after a delay of 10 minutes, the load is turned on according to the set parameters, and the load starts to work; when there is sunlight, the light intensity rises to start Point, the controller delays for 10 minutes to confirm the shutdown signal and then closes the output, and the load stops working. 2. Light control plus time control mode: the startup process is the same as pure light control, when the load is working to the set time, it will automatically shut down, and the set time is 1 to 14 hours. 3. Manual mode: In this mode, the user can control the opening and closing of the load by pressing the buttons, regardless of whether it is during the day or at night. This mode is used in some special load occasions or during debugging. 4. Debugging mode: used for system debugging. When there is a light signal, the load is turned off, and the load is turned on without a light signal, which is convenient for checking the correctness of the system installation during installation and debugging. 5. Normally open mode: The load has been powered on and keeps the output state. This mode is suitable for loads that require 24 hours of power supply. The popular solar controllers on the market mainly include ordinary solar controllers, PWM solar controllers and MPPT solar controllers. Ordinary solar controller is the first-generation technology. The working principle is to directly connect the output of the solar panel to the battery port, and disconnect it when the battery is full. It is difficult to fully charge the battery due to the internal resistance of the battery, and the solar panel It has not been fully utilized, and the charging conversion efficiency is only 70 to 76%, which has been eliminated by the market, and basically few people use it. The PWM solar controller is the second generation technology, and the most on the market now. The working method is PWM control. Compared with ordinary solar controllers, it has improved a lot and can solve the problem of battery dissatisfaction. The charging conversion efficiency is 75-80%. , But the solar panels are not fully utilized. MPPT solar controller is the third generation technology, the most high-end solar controller. The MPPT solar controller refers to the solar controller with the function of "Maximum PowerPoint Tracking". It is an upgraded product of the PWM solar controller. The MPPT solar controller can detect the voltage and current of the solar panel in real time, and continuously track the maximum Power (P=U*I), so that the system always charges the battery with the maximum power. The MPPT tracking efficiency is 99%, and the power generation efficiency of the entire system is as high as 97%. It also has excellent management of the battery. It is divided into MPPT charging and constant Voltage equalization charging and constant voltage floating charging. With the advancement of technology and energy conservation, the trend of MPPT solar controllers replacing traditional PWM solar controllers is irreversible. The new solar controller has the following main functions: 1. Overcharge protection: When the charging voltage is higher than the protection voltage, the battery will be automatically turned off to charge the battery. After that, when the voltage drops to the maintenance voltage, the battery will enter the floating charge state. When the voltage is lower than the recovery voltage, the float charge will be closed and enter the equal charge state . 2. Over-discharge protection: When the battery voltage is lower than the protection voltage, the controller automatically turns off the output to protect the battery from damage; when the battery is recharged, it can automatically restore power. 3. Load over-current and short-circuit protection: After the load current exceeds 10A or the load is short-circuited, the fuse is blown, and it can be used after replacement. 4. Overvoltage protection: When the voltage is too high, the output is automatically turned off to protect the electrical appliances from damage. 5. With anti-reverse charging function: Schottky diodes are used to prevent the storage battery from charging the solar battery. 6. With anti-lightning function: when there is a lightning strike, the varistor can prevent the lightning strike and protect the controller from damage. 7. Solar battery reverse connection protection: The solar battery "+" and "-" are connected reversely, and can continue to be used after correction. 8. Battery reverse connection protection: the battery "+" and "-" are connected in reverse polarity, the fuse is blown, and it can be used after replacement 9. Battery open circuit protection: In case of battery open circuit, if the solar battery is charging normally, the controller will limit the voltage at both ends of the load to ensure that the load is not damaged. If it is at night or when the solar battery is not charging, the controller will have Without power, there will be no action. 10. With temperature compensation function. 11. Self-inspection: When the controller is affected by natural factors or improperly operated by humans, the controller can be self-inspected to let people know whether the controller is intact, reducing a lot of unnecessary man-hours, and creating conditions for winning the quality of the project and the construction period. . 12. Recovery interval: It is the recovery interval for over-charge or over-discharge protection to avoid line resistance or the self-recovery characteristics of the battery from causing the load to move. 13. Temperature compensation: monitor the temperature of the battery, and correct the charging and discharging value to make the battery work in an ideal state. 14. Light control: It is mostly used for automatic lamps. When the environment is bright enough, the controller will automatically turn off the load output; and when the environment is dark, it will automatically turn on the load to realize the function of automatic control. Installation and precautions: 1. Open the package and fix it in a suitable place (please avoid direct sunlight and humid places). 2. First connect the battery lead (in order to prevent errors in the automatic identification function), and wait for the controller to complete the identification process (after the level indicator indicates the battery power), then connect the solar panel lead, and finally turn off the load. Connect the load line under the circumstances. 3. In order to use safety, do not use excessive load or increase the solar panel too large; use a power supply such as a power supply to replace the solar battery to charge the battery. 4. When charging, remove the solar panel, and the charging current should not be too high. 5. Pay attention to the positive and negative poles of the battery. Failure and troubleshooting: 1. The load does not work (1) During the day, the controller has light control. (2) The power in the battery is insufficient. (3) Whether the wiring is correct. (4) Remove all wires, repeat the above installation process, and let the controller re-identify. 2. It can be used in the first few days but not working after a few days (1) The solar cell wiring is incorrect. (2) The solar cell is not connected properly. 3. No light control (1) The solar cell wiring is incorrect. (2) This function is not set, please reset it. 4. It works when it is turned on, and it cannot be controlled by light or time. (1) This function is not set, please reset it. (2) The ambient light of the solar panel is strong enough. 5. The work instruction flashes non-stop The load is short-circuited or the load is too large.