基于ARM的光源跟踪系统的设计  

Design of tracking system for light sources based on ARM

作　　者：崔琪琳[1] 吴晓凤[1] 

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《电子测试》2011年第2期61-64,共4页Electronic Test

摘　　要：为了最大程度地利用太阳能,就必须提高太阳能跟踪系统的跟踪速度和精度。针对传统以单片机为控制核心的系统存在运算速度慢等缺点的问题,本系统利用ARM微控制器LM3S811为控制核心,处理由光敏三极管采集、经放大和比较后的光源信号,控制步进电机带动跟踪平台运动,结合软件进行相关算法的运算控制最终实现对点光源的自动跟踪。通过对亮度可调的光源发生装置模拟太阳光照进行的跟踪实验,结果表明该系统较传统的单片机控制在跟踪速度和精度方面有很大提升。To maximize the use of solar energy, we must improve the tracking speed and accuracy of the solar tracking system. The traditional SCM control system has the shortcomings such as slow processing speed and so on. This system uses the ARM microcontroller LM3S811 as the control core; processes the light signal which collected by the phototransistor ; amplified and compared, controls the stepper motor to drive the platform, and combines with software to finish the automatic tracking of the light source. We use the adjustable brightness light source device to simulated the solar light to perform the tracking experiment. Experimental results show that the tracking speed and accuracy are better than traditional SCM system.

关 键 词：光源跟踪 LM3S811 步进电机 

分 类 号：TM615[电气工程—电力系统及自动化]