摘要
日常生产生活中经常需要对光源的照度进行测量。本文设计一种基于单片机的照度计,采用了GY-30型号的BH1750光电传感器来测量外部光照,以AT89C51单片机为系统控制核心,1602液晶显示测量数据,报警电路实现光电阈值报警。通过实测数据对比及误差分析,表明该系统具备高精度、高时效测量光照度的功能,测量精度可达1lx。
In daily life and production we often need to measure the illumination of the light source. This paper designs a illuminometer based on MCU, using the GY-30 model BH1750 photoelectric sensor to measure the external light, AT89 C51 microcontroller for the system control core, 1602 LCD display measurement data, alarm circuit to achieve the photoelectric threshold alarm. Through the comparison and error analysis of the measured data, it shows that the system has the function of measuring the illumination intensity with high precision and high aging, and the measurement accuracy can reach 1 lx.
出处
《数字技术与应用》
2017年第10期23-24,共2页
Digital Technology & Application
关键词
照度计
光电传感器
液晶显示
实验测试
illuminometer
photoelectric sensor
LCD
experimental test
