期刊论文

Research on illumination measurement system by segmented calibration based on MCU

中文

Weixingji yu Yingyong

1674-7720

2013

32

10

77-80

10.19358/j.issn.1674-7720.2013.10.027

:湖南省光学重点学科建设项目资助 :湖南省普通高校光电课程组教学团队支助 (12B38):衡阳师范学院科研启动项目 (12CXYY05):衡阳师范学院产学研用项目

本校为第一机构

为了测量LED的照度，在分析光电池工作原理的基础上，设计了以单片机为基础的光照度测量系统。系统由光电池、A／D转换器件、集成运放、温度传感器和单片机组成。为了克服光电池的温度非线性影响，采用了分段法进行最小二乘标定，即根据标定数据分别采用线性和非线性标定，测量时对温度曲线查表线性内插。测量系统具有原理清晰、结构简单、读数容易、系统线性等优点。经实验测试，表明测量系统性能良好，实验结果可靠。

In order to measure the illumination of LED lamps for indoor, after analyzing the principle of silicon photocell, and we design an illumination measuring system that consists of a silicon photocell, an A/D converter, operational amplifiers, a tempera ture sensor and a microcontroller. In order to overcome the nonlinear effects caused by the temperature of the silicon photocell, we use the segmented calibration with the least squares method to calibrate, which are the linear and the nonlinear calibration accord ing to the data. When measuring, the microcontroller looks up table according to the...