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Intelligent Road Studs
Dec 20, 2013

Performance

Measuring the performance of a solar spike from the following aspects.

Compression performance

If the solar spike can not withstand a certain pressure, the car crushed or impact crushed easily, of course, can not work properly, so the compression is a solar road spike a basic condition of normal work. But the problem is that the solar spike itself is an electronic product that contains electronic parts. It is not an easy task to make the electronic parts have a higher degree of compressive strength. Therefore, in general, Ordinary spike worse. Ministry of Communications technical requirements for 2014 is 10 tons.

There are several ways to effectively improve the compressive performance of solar spikes: First, the exposed solar panels using PC bullet-proof material to enhance the compressive capacity of electronic parts; the second is to use IC control as much as possible to reduce the electronic circuit Of the volume, to reduce the pressure on the electronic part; third is to design some stiffeners on the shell to share the pressure on the electronic part.

Sealing performance

If the solar spike is not completely sealed, it will naturally seep water, water seepage will cause short circuit, the consequences are catastrophic, so a qualified solar spike sealing performance must pass.

There are several ways to improve the sealing performance of solar spikes:

(1) separation of design. LED lampshade and the internal circuit board using isolated design, even if the LED lamp is broken, solar spikes are still guaranteed inside will not seepage;

(2) The use of strong neutral bonding material to ensure solar panels, LED lamp cover and spike shell close adhesion, there is no gap in the middle.

brightness

Solar road spikes active light, clearly outlined the road profile; compared to reflective spikes, it is an important feature is the luminous intensity. This indicator requires the Ministry of Communications is 2000 MCD.

solar spike.jpg

Stability

Battery Life An important factor that determines the life of a solar stud is the battery life, the battery selection is crucial. There are two types of batteries available for reference on the market until 2014. One is to reduce the battery capacity to 50% after 500 charge and discharge cycles, and the other is to reduce the battery capacity to 79% after 1000 charge and discharge cycles. [2] 

Battery life should not only be long enough, but also to be able to work properly over a wide temperature range. The battery is a chemical inside, if the temperature is too high or too low, the battery can not work, the solar road spike battery operating temperature range must meet the requirements of the actual use of the environment. The requirements of the Ministry of Transportation is -10 degrees to 50 degrees, the actual environment often beyond this range, which put forward higher requirements for the battery.

Electronic circuit board design must follow the simple and effective design principles, not artificially complicated, because more than one line on the possibility of a failure. Electronic components should also be strictly selected, because any one of the problems of electronic components may make the entire system paralyzed.

Welding and welding must be solid, because the solar spikes bear the rolling and impact of the vehicle every day, a little bit of loose solder joints will lead to loose lines and fall off. Therefore, the choice of welding torch and solder must be selected when the high-quality products to ensure solid and reliable solder joints can be a long time in the relatively "bad" environment.

Solar panels directly absorb solar energy, and the light energy into electricity, solar energy can be said to be the first link in the whole system of work; the efficiency of the work it directly determines the level of work efficiency of solar spikes. Monocrystalline solar panels are commonly used until 2014 because monocrystalline silicon solar panels have a high photoelectric conversion rate of about 14% and can convert solar energy into electrical energy to the maximum extent to ensure that solar spikes work When the energy supply. In addition, solar panels must be high hardness, wear-resistant circuit board. Solar panels withstand the rolling wear of the wheels every day, and if the strength is not enough, it is easy to polish the solar panels, thereby affecting the conversion efficiency of the solar panels.


solar pavement markers.jpg


Battery matching performance

8 hours under the standard test conditions, the rated capacity of the battery should meet the 72-hour normal spike nail needs; even if the sunlight is less than 1000LX, 8 hours after charging the battery, the rated capacity should meet the spire normal light 12 hours Need. This point must also pay special attention. If the battery performance is not good, in rainy weather there will be insufficient storage battery energy resulting in solar spikes can not light. As a result, solar spikes have no practical value, they simply can not be used. This is where the limitations of capacitive solar spikes lie. In the standard test conditions for 8 hours, the rated capacity of the capacitor generally can only meet the spike 12-14 hours of normal light needs, so that the capacitive solar spike on the actual use of the environment is very demanding, not only the sun should be sufficient Strong, but can not have continuous rainy weather, otherwise difficult to work properly.

Environmental adaptability

Road stud reflectors use the environment is complex and changeable, temperature, humidity may be very different. The temperature in the north is very low in winter and the temperature in the south is very high in summer. The temperature difference between day and night in the northwest is particularly large, humid in the southeast, and dry in the northwest. All of these will affect whether the solar spike work is normal or not. Therefore, the solar spike design should fully consider the environmental adaptability .

According to the Ministry of Communications, the temperature requirement for 2014 is in the range of -20 ° C to 85 ° C, and three cycles of tests between 20 ° C and 60 ° C are required to see if it can meet the requirements of the environment. Ministry of Transportation requirements of the solar road spike damp heat performance at 45 ℃, relative humidity of 98% under the conditions of 48 hours after the test can still work properly.

Environmental adaptability of solar spikes is a comprehensive test of its mechanical and electrical properties, involving many aspects of the structural design, circuit design, electronic device performance, and even its production process. This also requires all aspects of the work to be done in order to protect the solar energy spike better environmental adaptability.

reflective road studs.jpg

The Shaanxi Yiyuan Traffic Technology Engineering Co.Ltd. 


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    Address: No.5, Production Road, West Thermal Power Plant, West Section Of Hongguang Road, Weiyang District, Xi'an, Shaanxi, China

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