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Solar street light automatic on/ off


Solar street light automatic on/ off

     Under normal circumstances, the street light control devices provided by solar light manufacturers have timing, light control, and even rain control functions, which are very convenient to use. If your solar street light only has battery, LED light source and light source power supply circuit, but no circuit control , We know that if the 220v lighting circuit wants to control the lighting, we only need a 220v timer to automatically switch it on and off, and the solar street lights are powered by batteries, how do we control them?


    In general, solar lights do not need to set a separate switch, because the controller can better complete the task of street light switching. The biggest advantage of solar street lights is the elimination of buried wires, which can save two major costs of digging and filling the ground and laying out cables. If the switch is set uniformly, then both of these costs need to be spent. Therefore, the task of switching street lights must be automatically completed by solar street lights, otherwise the significance of solar lights will be lost.


   Solar street lights are generally composed of photovoltaic panels, batteries, lamp holders and controllers. The controller is at the center of the entire system. The current controller generally has the following functions:


1. Switch function

 Turn on the street lights. Solar street lights are all light control, but do not need to install a light sensor separately. The turn-on of the street light is determined by the output voltage of the photovoltaic panel. When it gets dark and the street lights need to be turned on, the output voltage of the photovoltaic panels will also drop. When the voltage drops to a certain value (such as 5V), the microcontroller in the controller will automatically turn on the electronic switch and light up the street lights.

 Turn off street lights. The way to turn off the street light needs to be set in advance, and it can be set to time control. Most time controls start timing from lighting, and automatically turn off when the timing ends. The disadvantage of this control is that the turn-off time is inconsistent in the four seasons. For example, it is also set to 6 hours, and sometimes the lights will be turned off before 23:00 in winter. In summer, it can be lit until two or three o'clock in the morning at the latest.

To turn off the street lights at a fixed point, you need to configure the clock in the controller. Although this is not technically difficult, such controllers are rare.

There is also pure light control. Its light-off is based on the output voltage of the photovoltaic panel. When the sun gradually brightens, as the output voltage of the photovoltaic panel rises. Street lights will automatically turn off.


2. To select the battery function. Because the photovoltaic panel needs to charge the battery in vain, and different batteries have different requirements for charging and discharging, such as single lead-acid battery, .8-2.3v, lithium battery 2.8-4.2v, etc. . For this reason, a variety of matching parameters are preset in the controller for users to choose.


3. Step output: In order to further save power, most controllers have this function. Because solar street lights are generally installed in branch roads or in courtyards. There is no need to be too constitutional late at night. Therefore, the operation mode of reducing power by time period can be adopted.


    Therefore, the solar street light can automatically control the switch because of the function of the solar street light controller. After the controller is installed, the switch can be automatically controlled. According to different requirements, the solar street light can be designed as light control or time control. The time of discharge can be controlled, and the intensity of discharge can also be controlled. Choose LITEL solar light is to choose professional!

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