Design and Realization of Solar Auto-tracking Controller Based on CMOS Image Sensor

A solar automatic tracking controller based on CMOS image sensor is designed.Its host computer achieves a joint programming of VC++ and Matlab based on MCC,and obtains the sun spot image by real-timely controlling the image sensor.The deviation between sun′s mass center coordinates and image center coordinates is calculated by Matlab.The calculation is converted into the steps of the level and pitch stepper motor to be adjusted.Real-time adjustment of plane mirror tracking device is achieved,so that sun spot has always being the center of the image.The experimental results show that the device automatically tracks the sun,and has high tracking accuracy.