摘要
通过对精密电流检测器件LM3824工作原理的分析,介绍了精密电流检测的硬件实现和软件设计。由集成精密检测芯片LM3824组成的精密电流检测系统,首先利用LM3824对被测量进行变换,并调制成PWM信号,然后通过8051系列单片机对PWM信号占空比的采样来计算电流,从而完成对电流的精密测量。
Hardware implementation of precise measurement of electric current and its software design are introduced by analyzing the LM3824. The system that is constituted by LM3824 can measure current by sampiing, and the input value will be converted and produce PWM signal, then the current value will be counted by 8051 series single chip. The measurement samples the duty factor to calculate the current value, and the method is simple and reliable.
出处
《电子工程师》
2006年第10期19-20,共2页
Electronic Engineer
关键词
电流检测系统
LM3824
单片机
electric current measurement system
LM3824
single chip
