混合双轴控制的太阳自动跟踪系统研究  

Research on Hybrid Dual-axis Controlled Sun Automatic Tracking System

作　　者：柯熙政[1] 王欢 KE Xi-zheng;WANG Huan(Faculty of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《仪表技术与传感器》2021年第1期63-68,共6页Instrument Technique and Sensor

基　　金：陕西省重点产业创新链项目(2017ZDCXL GY-0601)。

摘　　要：文中主要针对斯特林碟架,设计了以ARM处理器和可编程逻辑控制器(PLC)为控制核心,视日运行轨迹跟踪与图像处理相结合的混合跟踪方式实现太阳自动跟踪。首先,利用太阳位置算法(SPA)定位太阳位置,确保太阳光斑在摄像头视场范围内;其次,使用CMOS图像传感器采集太阳图像,通过ARM处理器处理图像获取太阳跟踪角度误差;最后利用PLC控制电机转动碟架实现对太阳的高精度跟踪。实验表明:混合跟踪方式既可解决光电跟踪在多云天气无法正常工作的问题,又将视日运行轨迹产生的误差消除,有效提高了太阳跟踪精度。This paper is mainly for a Stirling dish rack.ARM processor and PLC as control core were designed.The sun automatic tracking was realized by a hybrid tracking method combining the orbit tracking of apparent sun with image processing.First,a solar position algorithm(SPA)was used to locate the position of the sun to make sure the sun was in the camera s field of view.Second,the solar image taken by the CMOS image sensor was calculated by ARM processor to obtain the solar tracking error.Finally,high-precision tracking of the sun was realized by a dish rack controlled by the PLC.Experimental results show that this hybrid solar tracking system not only avoids the disadvantage of photoelectric tracking,which is unable to work normally in cloudy days,but also eliminates error caused by the solar track,the tracking accuracy of the sun is improved.

关 键 词：太阳自动跟踪 可编程逻辑控制器 ARM处理器 CMOS图像传感器 太阳位置算法 图像处理算法 

分 类 号：TK513.4[动力工程及工程热物理—热能工程]