摘要
光照强度是重要的监测参数。以STC89C52单片机为核心设计一个光照强度的监测系统。利用光强度传感器BH1750FVI转换和采集光信号,经单片机串口通信送PC机;PC机采用最小二乘法建立BH1750FVI的输出和输入光照强度之间的特性曲线;单片机再根据特性曲线处理光信号,并在液晶显示器LCD上实时显示光照强度的测量值。试验表明:测试仪结构简单,性能稳定,能准确检测光照强度的值。该设计方法能用于对光照要求较高的场所、仪器仪表和控制系统等。
A design is proposed to detect illumination strength based on single chip microcomputer（SCM） STC89 C52 in this paper.Light signals are acquired from Light intensity sensor BH1750 FVI and transmitted to PC computer by SCM serial communication,where the characteristic curve is established between output of BH1750 FVI and intensity of input light using the least square method.Light signals then are processed according to the characteristic curve,and light intensities are displayed on LCD in real time.
出处
《工业控制计算机》
2018年第8期158-160,共3页
Industrial Control Computer
