Solar road studs absorbs solar energy in the daytime, which can be converted into electrical energy and stored in the energy storage device(battery and capacitor). In the evening, the electricity in the storage device can be automatically transformed into light energy (controlled by the photoelectric switch), through the LED light to show the path outline and guide the sight of drivers. stored in the energy storage device(battery and capacitor).
According to installation position ,solar road studs can be divided into different embedding and projection type. The former is generally used in the midline, the later is always used in edge line. The solar road studs ,which is installed in the middle of the line, should have stronger pressure resistant than that used in edge line. In order to solve this problem, solar road studs are embedded in the ground, only 5 mm above the ground. For the solar road studs used in the edge line, it needn’t have the strong pressure resistant as that used in middle, they still work effectively above ground. According to energy storage elements, solar road studs can be divided into different capacitance and cell type. The former service life up to five to seven years, generally one to three years.
The embedded type solar road studs have great damage on the pavement and the capacitance type solar road studs’ cost is too high, so the convex type solar road studs are widely used now.
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