1. Compression resistance.
If the solar spike can not withstand a certain pressure, it will easily break after the car is rolled or impacted, and naturally cannot work normally. Therefore, the compression resistance is a basic condition for the normal operation of the solar spike. However, the problem is that the solar stud is an electronic product, which contains electronic parts. It is indeed not an easy task to make the electronic part also have a relatively high degree of compressive performance. Therefore, in general, the compression resistance of solar studs is better than Ordinary spike is worse. At present, the technical requirement of the Ministry of Transportation is 10 tons.
There are several ways to effectively improve the compressive performance of solar spikes: First, the exposed solar panels use PC ballistic materials to enhance the compression resistance of the electronic parts; second, IC control is used as much as possible to reduce electronic circuits. The volume to reduce the pressure on the electronic part; Third, design some stiffeners on the shell to share the pressure on the electronic part.
2. Sealing performance If solar studs are not completely sealed, they will naturally seep through. Water seepage will cause short circuits and the consequences will be catastrophic, so a qualified solar stud sealing performance must pass.
There are several ways to improve the sealing performance of solar studs: (1) Separate design. The led lamp housing and the internal circuit board are isolated. Even if the led lamp housing is broken, the interior of the solar energy spike is still guaranteed to be free from seepage;
(2) Use a strong neutral adhesive material to ensure that the solar panel, led lampshade, and spike shell are tightly bonded with no gap in the middle.
3. High brightness. Solar spikes actively emit light, clearly delineating the road profile; compared to the reflective spikes, its very important feature is its high luminous intensity. This indicator requires 2000 MCDs.
4. Long-term stable work. An important factor in determining the life of solar spikes is the life of the battery, so battery selection is critical. At present, there are two types of batteries on the market that can be referenced. One is that the battery capacity is reduced to 50% after 500 times of charging and discharging; the other is that after 1000 times of charging and discharging, the battery capacity is reduced to 79%.
The battery life should not only be long enough, but it must be able to work in a relatively large temperature range. We know that the interior of the battery is a chemical substance. If the temperature is too high or too low, the battery cannot work. Therefore, the operating temperature range of the solar spike battery must meet the requirements of the actual use environment. The requirements of the National Transportation Ministry are -10 degrees to 50 degrees, but the actual environment will often exceed this range, which puts higher requirements on the battery.
The battery is important and electronic circuits are equally important. The design of the circuit board must follow the simple and effective design principle, do not artificially complicate, because more than one circuit will have one more possibility of failure. Electronic components must also be rigorously selected because problems with any one electronic component can make the entire system paralyzed.
There is also the problem of welding. Welds must be secure because solar spikes withstand the rolling and impact of vehicles every day. Loosening of the solder joints will cause the lines to loosen and fall off. Therefore, when selecting welding torches and solders, we must select high-quality products to ensure that the solder joints are solid and reliable, and that they can work in relatively “bad†environments for a long time.
There is still a part of solar spikes that needs attention, and that is solar panels. Solar panels directly absorb solar energy and convert light energy into electric energy. It can be said that the solar link is the first link in the entire work system; its work efficiency directly determines the working efficiency of solar energy spikes. Monocrystalline solar panels are now commonly used because of the high photoelectric conversion rate of about 14% for monocrystalline solar panels, which can convert solar energy into electrical energy to the maximum extent possible to ensure that solar Energy supply. In addition, solar panels must be high-hardness, wear-resistant circuit boards. Solar panels are subject to rolling abrasion of the wheels every day. If the strength is not enough, it is easy to grind the flowers, thereby affecting the conversion efficiency of solar panels.
5. Battery matching performance.
8 hours under standard test conditions, the rated capacity of the battery should meet the requirement of 72 hours of normal lighting of the spike; even if the sunlight is less than 1000LX, the rated capacity of the battery should meet the normal light emission of the spike for 12 hours after charging the battery for 8 hours. Needs. This must also pay special attention. If the matching performance of the battery is not good, there will be a shortage of stored energy of the battery in rainy weather, which will cause the solar pin to fail to emit light. As a result, solar spikes have no practical value and cannot be used at all. This is where the limitations of capacitive solar spikes are. When placed under standard test conditions for 8 hours, the rated capacity of the capacitor can only meet the need for normal lighting of the spikes for 12-14 hours. Therefore, the requirements of the capacitive solar studs for the actual use of the environment are very harsh, and not only the sunlight should be sufficient. Strong, and can not have continuous rainy weather, otherwise it will be difficult to work properly.
6. The environment adapts to performance. The use environment of solar spikes is complex and varied, and the temperature and humidity may be quite different. The temperature in the northern winter is very low, the temperature in the southern summer is very high, and the temperature difference between day and night in the northwest is particularly large. The southeast is humid and the northwest is dry. These will affect the normal operation of the solar spikes. Therefore, the design of the solar spikes should fully consider the environmental adaptability. .
At present, the Department of Transportation's requirement for temperature is within the range of -20°C to 85°C. At the same time, three cycles of tests must be performed between 20°C and 60°C to see if it can meet the requirements of the environment. The requirements of the Department of Transportation on the thermal and hygrothermal performance of solar spikes are that after 48 hours of testing at 45°C and a relative humidity of 98%, they can still work normally.
The environmental adaptability of solar spikes is a comprehensive inspection of their mechanical and electrical properties, involving structural design, circuit design, and electronic device performance, and even their production processes. This requires that all aspects of the work must be done in order to ensure that the solar spikes have a better environmental adaptability.
If the solar spike can not withstand a certain pressure, it will easily break after the car is rolled or impacted, and naturally cannot work normally. Therefore, the compression resistance is a basic condition for the normal operation of the solar spike. However, the problem is that the solar stud is an electronic product, which contains electronic parts. It is indeed not an easy task to make the electronic part also have a relatively high degree of compressive performance. Therefore, in general, the compression resistance of solar studs is better than Ordinary spike is worse. At present, the technical requirement of the Ministry of Transportation is 10 tons.
There are several ways to effectively improve the compressive performance of solar spikes: First, the exposed solar panels use PC ballistic materials to enhance the compression resistance of the electronic parts; second, IC control is used as much as possible to reduce electronic circuits. The volume to reduce the pressure on the electronic part; Third, design some stiffeners on the shell to share the pressure on the electronic part.
2. Sealing performance If solar studs are not completely sealed, they will naturally seep through. Water seepage will cause short circuits and the consequences will be catastrophic, so a qualified solar stud sealing performance must pass.
There are several ways to improve the sealing performance of solar studs: (1) Separate design. The led lamp housing and the internal circuit board are isolated. Even if the led lamp housing is broken, the interior of the solar energy spike is still guaranteed to be free from seepage;
(2) Use a strong neutral adhesive material to ensure that the solar panel, led lampshade, and spike shell are tightly bonded with no gap in the middle.
3. High brightness. Solar spikes actively emit light, clearly delineating the road profile; compared to the reflective spikes, its very important feature is its high luminous intensity. This indicator requires 2000 MCDs.
4. Long-term stable work. An important factor in determining the life of solar spikes is the life of the battery, so battery selection is critical. At present, there are two types of batteries on the market that can be referenced. One is that the battery capacity is reduced to 50% after 500 times of charging and discharging; the other is that after 1000 times of charging and discharging, the battery capacity is reduced to 79%.
The battery life should not only be long enough, but it must be able to work in a relatively large temperature range. We know that the interior of the battery is a chemical substance. If the temperature is too high or too low, the battery cannot work. Therefore, the operating temperature range of the solar spike battery must meet the requirements of the actual use environment. The requirements of the National Transportation Ministry are -10 degrees to 50 degrees, but the actual environment will often exceed this range, which puts higher requirements on the battery.
The battery is important and electronic circuits are equally important. The design of the circuit board must follow the simple and effective design principle, do not artificially complicate, because more than one circuit will have one more possibility of failure. Electronic components must also be rigorously selected because problems with any one electronic component can make the entire system paralyzed.
There is also the problem of welding. Welds must be secure because solar spikes withstand the rolling and impact of vehicles every day. Loosening of the solder joints will cause the lines to loosen and fall off. Therefore, when selecting welding torches and solders, we must select high-quality products to ensure that the solder joints are solid and reliable, and that they can work in relatively “bad†environments for a long time.
There is still a part of solar spikes that needs attention, and that is solar panels. Solar panels directly absorb solar energy and convert light energy into electric energy. It can be said that the solar link is the first link in the entire work system; its work efficiency directly determines the working efficiency of solar energy spikes. Monocrystalline solar panels are now commonly used because of the high photoelectric conversion rate of about 14% for monocrystalline solar panels, which can convert solar energy into electrical energy to the maximum extent possible to ensure that solar Energy supply. In addition, solar panels must be high-hardness, wear-resistant circuit boards. Solar panels are subject to rolling abrasion of the wheels every day. If the strength is not enough, it is easy to grind the flowers, thereby affecting the conversion efficiency of solar panels.
5. Battery matching performance.
8 hours under standard test conditions, the rated capacity of the battery should meet the requirement of 72 hours of normal lighting of the spike; even if the sunlight is less than 1000LX, the rated capacity of the battery should meet the normal light emission of the spike for 12 hours after charging the battery for 8 hours. Needs. This must also pay special attention. If the matching performance of the battery is not good, there will be a shortage of stored energy of the battery in rainy weather, which will cause the solar pin to fail to emit light. As a result, solar spikes have no practical value and cannot be used at all. This is where the limitations of capacitive solar spikes are. When placed under standard test conditions for 8 hours, the rated capacity of the capacitor can only meet the need for normal lighting of the spikes for 12-14 hours. Therefore, the requirements of the capacitive solar studs for the actual use of the environment are very harsh, and not only the sunlight should be sufficient. Strong, and can not have continuous rainy weather, otherwise it will be difficult to work properly.
6. The environment adapts to performance. The use environment of solar spikes is complex and varied, and the temperature and humidity may be quite different. The temperature in the northern winter is very low, the temperature in the southern summer is very high, and the temperature difference between day and night in the northwest is particularly large. The southeast is humid and the northwest is dry. These will affect the normal operation of the solar spikes. Therefore, the design of the solar spikes should fully consider the environmental adaptability. .
At present, the Department of Transportation's requirement for temperature is within the range of -20°C to 85°C. At the same time, three cycles of tests must be performed between 20°C and 60°C to see if it can meet the requirements of the environment. The requirements of the Department of Transportation on the thermal and hygrothermal performance of solar spikes are that after 48 hours of testing at 45°C and a relative humidity of 98%, they can still work normally.
The environmental adaptability of solar spikes is a comprehensive inspection of their mechanical and electrical properties, involving structural design, circuit design, and electronic device performance, and even their production processes. This requires that all aspects of the work must be done in order to ensure that the solar spikes have a better environmental adaptability.
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