基于数控恒流源的环境光照强度智能调节系统  

Intelligent adjusting system of environmental illumination intensity based on number control constant current source

作　　者：杨尘宇 黄伟锋 李超 林东涛 陈家政 陈诗欣 YANG Chenyu;HUANG Weifeng ＊;LI Chao;LIN Dongtao;CHEN Jiazhen;CHEN Shixin(College of Automation,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)

机构地区：[1]仲恺农业工程学院自动化学院,广东广州510225

出　　处：《仲恺农业工程学院学报》2018年第3期41-46,共6页Journal of Zhongkai University of Agriculture and Engineering

基　　金：广东省公益研究与能力建设专项资金(2015A020209175);广东省大学生创新创业训练计划(201711347021);仲恺农业工程学院大学生创新基金(2017A43)资助项目

摘　　要：为实现环境光照强度的动态自动调节,研制了一款光照检测及调节系统.该系统主要由单片机、传感器、恒流源以及灯组等组成,通过TSL2561光照传感器实时检测当前环境的光照强度,采用PID控制算法,以光强实测值和用户预设值的偏差为依据,实时调整系统输出量,以PWM形式的信号控制恒流源的输出电流大小,实现对环境光照强度的精确控制.通过仿真和试验两种方式联合整定了PID参数并对系统进行了试验,结果表明:该系统运行可靠,在持续扰动作用下,稳定时间最短为6 s,最长为10 s,能满足一般环境光照调节的要求,可为相关领域的光照智能调节提供参考.In order to realize the dynamic automatic adjustment of environmental illumination intensity, a illumination detection and adjustment system was presented. The system was consisted of single chip, sensor, constant current source and lamp set, etc. The light intensity of the current environment was detected in real time through a TSL2561 light sensor, and the PID control algorithm was adopted. The output quantity of the system was adjusted in real time based on the deviation between the measured value of light intensity and the preset value of the user, and the output current of the constant current source was controlled by the signal in the form of PWM to realize the accurate control of the environmental illumination intensity. The PID parameters were adjusted by both simulation and experiment. The results showed that the system was reliable, the shortest time was 6 s and the longest was 10 s under the continuous disturbance, which could meet the requirements of general environmental illumination regulation. It could provide a reference for intelligent adjustment of illumination in related fields.

关 键 词：光照检测 LED 恒流源 PID控制 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]