Study On System Of Solar Panel Autotracking

With the day by day exhaustion of the traditional fossil energy, the human beings are faced with a stern energy challenge. Moreover, the use of great quantities of fossil fuels has already brought about disastrous impact upon humans. A prominent conflict has occurred among the highly developed human civilization and the earth existence. Discovering new energy resources is a human common mission. Great importance will be attached to solar energy and will be widely exploited. So it becomes a practical issue to research how to fully make use of the solar energy to which this thesis is devoted.This paper discusses how the solar panel autotracks the sun. The controlling technology of the single chip micyoco (SCM) is employed to realize the mechanical & electrical integration in which the automatic degree and the self stability are enhanced. This system adopts SCM AT89C51, which is the controlling core of the whole system.Two tracking modes are discussed in this paper, which are optoelectronic detection tracking mode and sun position calculation tracking mode. Optoelectronic detection tracking mode is used in sunny days, while the sun position calculation tracking mode is used in cloudy days. The two combined modes can fully achieve the aim of solar energy tracking. With optoelectronic detection tracking mode, light-sensitive diode is used as optoelectronic sensor to judge the position of the sun and derived the solar panel by SCM. With sun position calculation tracking mode, the sun's angles of altitude and position are calculated by software joined by mechanic device to track the real-time sun. The design of modularization is employed for software and hardware and C51 language is adopted in the control system.The tracking substances of optoelectronic detection and sun position detection are tested respectively. The test result of the former indicates that the tracking effect is more remarkable, which the solar take-over is improved to 35.3%. The test result of the latter indicates that the calculation precision is preferable, which is within the requirement of the calculation function.