Shanghai dragon Maowei successful development of city electricity, solar energy light adjustable SLM4610 controller

After the Ministry of science and technology put forward the grand plan of ten cities after 10000, around the LED street like booming flourish. But there is a common feature, that is, the vast majority of the use of commercial power supply, and rarely use solar panels powered. The reason is that several reasons, one reason is that most of these streetlights are the original high-pressure sodium lamp into a LED street lamp, so the original city power supply lines are in, can be used directly. Another reason is that the local sunshine is not strong enough to use all of the solar power, in the rainy days can not be guaranteed. Many of these lines have been transformed is the main road, the evening lighting must be guaranteed. So give up the use of solar energy. It is a pity to do so. Because although the LED street lamp in life, environmental protection and other advantages, but in terms of electricity, the current advantage is not too great. If you can use solar power, it can save the electricity bill, which is of great significance for energy conservation and emission reduction to achieve renewable energy carbon economy.

A method of solution is usually to solar power supply, electricity supply in the rainy days with standby power supply circuit, because they are already in, without additional laying. As long as the ability to automatically switch according to the situation.

This dual purpose controller is developed for this purpose. The block diagram of the system is as follows:

This kind of controller to charge the battery at night by using solar panels, battery discharge to LED street, but also to adjust the LED brightness value according to the statistics of local traffic flow, once the detected battery voltage discharge (not lower than the minimum permissible discharge voltage), will automatically switch to the mains switch regulated power supply by a high power, to replace the battery to light adjustable constant current power supply module.

Controller SLM4610 specific connection as shown in the following figure:

This controller has the function of LED in addition to all all the solar street lamp controller (dark lights, according to the procedure of dimming, battery charge and discharge protection), but also in the rainy days the battery is automatically switched to power. And after the battery is fully charged, the battery is restored to power supply.