摘要
为了使物联网传感器节点在户外长期工作,提出了一种光源自动跟随系统,由放置在上、下、左、右的4个数字照度传感器进行光照强度检测。单片机对水平和垂直方向的光照强度差值做出控制,使双轴电机运动直至水平或垂直方向上的2个传感器输出基本一致,达到自动跟踪光源的效果。结果表明:所设计的控制系统测量精度较高,能实现物联网传感器节点的持续的可靠运行。
To support long time outdoor working of sensor nodes of the internet of things, light source automatic following system is proposed. Light intensity is detected with 4 digital illuminance sensors placed in up and down, left and right. Light intensity difference in horizontal and vertical direction is controlled by miro controller unit to make two-axis motor move until the output of two sensors in horizontal or vertical direction is consistent to achieve effect of automatic light source tracking. The result indicates measuring accuracy of designed control system is high. It can realize reliable persistent operation of sensor nodes of internet of things.
出处
《石油化工自动化》
CAS
2015年第4期27-29,共3页
Automation in Petro-chemical Industry
基金
北京市教委科技面上项目(KM201510858004)
北京电子科技职业学院重点课题(YZKB2014008)
关键词
数字照度传感器
自动跟随
传感器节点
digital illuminance sensors
automatic following
sensor nodes
