Research And Design On Automatic Tracking System Of Solar Panels

Energy shortage is an important issue facing many countries, solar energy as a clean and non-polluting energy has great development prospects. Ours is a country rich in solar energy resources are more full use of solar energy resources, energy strategy has far-reaching significance. Use of solar energy is the key to increase solar collection efficiency of solar energy panels, solar panels receiving direct sunlight, thereby obtaining the maximum solar illumination intensity, so as to maximize solar collection.The solar tracking system can track the sun all-round, with two degrees of freedom tracking capability designed in this article. After a night or cloudy days, as long as the sun came out, the system can trace solar light automatically, and the system is reliable and stable. Through PCF8591 chip logical operating about the detecting results of the bridge circuit. In order to achieve the full range of solar tracking, we must control azimuth and elevation angle of the stepper motor. When the two-way photo resistors values measured in the horizontal direction is relatively close, while two-way photo resistors measured values in the vertical direction are relatively close, the solar panel has been already described for the case of sunlight.The system can automatically adjust according to the direction of sunlight the solar panels facing, including the features of simple structure and low cost and so on. At the same time manual tracking buttons are set up to prevent the photoelectric detection module from fault, so the system has the ability to manually track.