Singlechip based solar cell automatic tracking device and control method thereof

Abstract

The invention relates to a singlechip based solar cell automatic tracking device which belongs to the field of optical, mechanic and electric integrated automatic control. In the invention, a sun position detection device and a double-axis mechanical tracking and positioning device are designed, and a control circuit is used for carrying out operation amplification and A / D processing on a sun position signal detected by a sensor and then transmitting the signal to a singlechip; the singlechip is used for sending out a pulse command and a direction command to control the running speed and the direction of a motor to track the sun in real time; meanwhile, the running speed and the direction of a tracker are adjusted in time according to a feedback signal of a photosensor, and a component iscontrolled through the feedback signal to decide when to brake the tracking device. The whole device adopts a method of combining stepwise tracking with sequential tracking. By adopting the method, the tracking error of the whole device is within the range of + / -5 degrees, and compared with continuous tracking and detection, the energy is saved.

Description

technical field [0001] The invention relates to a sun automatic tracking device system, which belongs to the field of integrated automatic control of light, machine and electricity. Background technique [0002] In recent years, with the rapid development of the solar power generation industry, the field of photovoltaic applications is gradually expanding, and various new photovoltaic products continue to emerge. However, due to the fixed installation of solar panels, the conversion rate is only about 10%, and the efficiency is low. In order to make better use of solar energy and improve its conversion efficiency, it is necessary to keep the surface of the solar panel always facing the direction of the sun. Therefore, it is necessary to design a sun-tracking automatic tracking system to monitor the sun on a full-time basis and effectively use solar energy to generate electricity. Through the effective use of solar energy, the waste of resources can be reduced, which plays a...

AI Technical Summary

Problems solved by technology

Although the tracking signal provided by the timing controller is stable, strictly speaking, the sun rises at different times every morning throughout the year, so the easiest way to use it is to adjust it every few days. The setting parameters of the starting time are to ensure that the working signal is given at the same time as the sun rises, which makes the operation of the system very inconvenient in the application [Li Ziying. Development of automatic tracking system for solar street lamps. Development and innovation of electromechanical products, 2008, 21(5): 154~155]

Some scholars use PLC to control the designed device and achieve a certain effect, but the circuit design is complicated [Salah Abdallah, SalemNijmeh. Two axes sun tracking system with PLC control. Energy Conversion and Management, 2004, (45): 1931~ 1939]

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