A solar ray automatic tracking device based on image sensor

Solar water heaters, solar cells and other solar equipments can not utilize the solar energy efficiently. If the energy conversion of solar energy devices can be vertical to the sun rays, more solar energy can be collected in the limited area. The paper presents a solar ray automatic tracking device based on image sensor which instead of photosensitive resistance. Optical imaging device is designed according to the principles of pinhole imaging, making the sun of divergence be received on the screen through pinhole imaging, and to be sun spot. The image sensors gather the imaging information on the screen, and output the image signals.