How does the solar street light controller control the lighting time
Street lighting is an important supporting facility for the municipal government. Good lighting at night provides a safety guarantee for driving at night, and the cost of street lighting is also an important expense. With the development of solar energy technology, solar street lights have become the preferred solution for street lighting. Friends who are more attentive should notice that the turn-on time of street lights at night is basically the same every day, and there is a difference between winter and summer.
So how do street lights turn on and off at night?
The more common practice in this industry is timing control, and the opening time and closing time can be set. Some control systems will add an automatic mode, which is realized by a photoresistor or by detecting the output voltage of the solar panel.
1 Timing mode
The solar street lighting system is composed of key modules such as solar panels, batteries, and controllers. Among them, the controller plays a related role in voltage detection, battery charge and discharge management, and street lights turning on and off. Both the turn-on time and turn-off time of the street light can be set. The opening time is late in summer and early in winter. The opening time and closing time can be set. This method is a general control method, and the manager only needs to modify the time according to the regulations in the control room.
2 Automatic mode
Some street lamps have an automatic mode, which can be realized by a photoresistor or by detecting the voltage of the battery panel. The photoresistor is a special kind of resistor whose resistance is closely related to the intensity of light. The stronger the light, the smaller the resistance, and the weaker the light, the larger the resistance. The photoresistor, comparator, transistor and other components can realize light control circuit . It can realize the function of turning off the light when the light is strong and turning on the light when the light is weak. In addition, the output power of the solar panel is larger when the light intensity is strong, and the output power is smaller when the light is weak, so that the automatic control of the lighting can also be realized.
