基于LM3824集成芯片的精密电流检测实现  

Implementation of Precise Measurement of Electric Current Based on LM3824

作　　者：卢霞[1] 杨建平[2] 

机构地区：[1]兰州工业高等专科学校计算中心,甘肃省兰州市730050 [2]兰州工业高等专科学校电子信息教研室,甘肃省兰州市730050

出　　处：《电子工程师》2006年第10期19-20,共2页Electronic Engineer

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.

关 键 词：电流检测系统 LM3824 单片机 

分 类 号：TM933.1[电气工程—电力电子与电力传动]