基于STM32的光电式太阳跟踪系统设计  

Design of STM32-Based Photoelectric Solar Tracking System

作　　者：刘卿卿[1,2] 俞强[3] 赵毛毛[1] 王竞雄[1] 

机构地区：[1]南京信息工程大学信息与控制学院,江苏南京210044 [2]南京信息工程大学大气环境与装备技术协同创新中心,江苏南京210044 [3]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《仪表技术与传感器》2017年第1期123-125,129,共4页Instrument Technique and Sensor

基　　金：江苏省自然科学基金项目(BK20130989);江苏省高等学校大学生创新创业训练计划项目(201510300004)

摘　　要：为了满足光电式太阳跟踪系统在低辐照和多云天气下对太阳连续跟踪的需要,设计了一种基于STM32的新型太阳跟踪系统。该系统以STM32F407ZET6为主控芯片,首先采用设计的CMOS图像传感器代替传统光电传感器,实现图像增强和预处理。其次,应用STM32对图像模块采集的图像进行实时处理,得到目标图像质心的位置,并计算出该位置相对于图像传感器视场中心的误差,并采用PID控制方法,对上述位置误差进行控制,最后以STM32产生相应的PWM驱动双轴电机,实现对机架的高精度闭环控制。该系统具有成本低、精度高、响应快、易于扩展等优点。To track to photoelectric solar continually in low radiation and cloudy weather, a new photoelectric solar tracking system was designed.The system took STM32F407ZET6 chip as the main controller and replaced traditional photoelectric sensor with well designed CMOS image sensor for image preprocessing.Then STM32 was used to control the image sensor to process the collecting image in real time to obtain the position of target image centroid and the orror between the sun centroid and view center of the image sensor could be calculated. PID control algorithm was used for the errors. Finally, PWM signals were generated by STM32 to drive dual-axis motor to achieve high precision closed-loop control.The system has the advantages of low cost,high pre- cision, fast response, easy to expand and so on.

关 键 词：STM32 太阳跟踪 图像传感器 电机驱动 图像处理 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]