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Daylighting system controller and software design

The most valuable use form of solar energy is directly used for lighting. Based on this, an extremely low power consumption of solar lighting system is presented in this paper. The system includes outer cover, control system, solar energy power source, mechanical transmission device and 3 mirrors. The sunlight reaches three reflecting mirrors through outer cover and it is reflected to the room by the 3 mirrors. During the process, the controller sends a signal to the motor of mechanical transmission device to make the reflector moves with the sun. Thus, the room can have the maximum reflected sunlight. Hardware system of the controller mainly consists of a microprocessor Atmega32L, used for the control of micro-motor to drive mechanism realizing daylighting. Software system includes control and communication sections, cooperating with the hardware system to realize power-efficient design and maximum daylighting which is according to the laws of the movement of the sun.