基于AVR单片机的槽式太阳能集热器追光控制系统设计

Sun Tracking Control System for Parabolic Trough Solar Collector Based on MCU

使用AVR单片机和光敏电阻设计了一种应用于槽式太阳能聚光器的追光控制系统。把4个光敏电阻放置在遮光板的两边,遮光板形成的阴影使得光敏电阻阻值随着太阳入射角而变化。设计电路把光敏电阻的阻值转换成电压,输入到AVR单片机内部的ADC进行数据采集。单片机对数据进行处理后,判断出太阳的位置,控制直流电机驱动聚光槽转动追光。经实验证明,该设计能够满足槽式聚光系统的追光要求。

A sun tracking control system for parabolic trough solar collector is designed by using AVR microcontroller and photosensitive resistor in this paper.Four photosensitive resistors are placed on both sides of the shading plate.The resistance of photosensitive resistor varies with the shadow changing of the shading plate caused by sun moving.A circuit is designed to convert the photosensitive resistance to voltage.Then the voltage signal is converted to data by the AVR MCU internal ADC.The MCU determine the sun position according to the data processing,and control the DC motor to drive parabolic trough solar collector tracking for the sun.