Development of solar power based automatic sunlight adjusting system for home care

With increasing population of elder people around the world, the demand of home care system such as sufficient sunlight supplier from natural resource is getting much attention in recent years. This paper has proposed an automatic sunlight adjusting system (ASAS) using solar power for the shutter action control. The proposed system can keep sunlight moderate as desired in the indoor room. Once the solar battery power is insufficient to support the system, the system power can be switched to AC source immediately using the AC/DC switching system (ASS). This mechanism in deed extends the green power applications and is very feasible for general facilities that require no large power. Real practical performance results are presented to demonstrate the effectiveness of the proposed approach in term of simple, flexible and efficient performance.