一种基于GPS的新型太阳光全自动跟踪控制系统的设计

摘要

太阳光照明系统的一个关键问题就是如何实时确定太阳的位置.该文介绍了一种基于GPS的新型太阳光跟踪控制系统,利用GPS得到观测点的经纬度和当前的时间,由Atmega168单片机计算出观测点此时太阳的高度角和方位角,然后控制步进电机转动云台,实现太阳的准确跟踪.控制系统使用角位置探测器对系统进行校准,可达到0.5度的精度.%A key issue of the solar system is how to determine real-time position of the sun. This paper describes a new solar lighting system。The system uses a new GPS-based solar tracking control module. A global positioning system(GPS) is used to acquire latitude, longitude and the current time of the observation point. Single chip microcomputer Atmega168 is used to calculate the elevation angle and azimuth of the sun at this time, and to control the stepper motor rotating pan-tilt. Using the angular position detectoras a calibration device, the control system achieves accurate tracking of the sun, and is calibrated to achieve a 0.5° accuracy.