全隔离宽量程电阻在线测量技术研究

A Study on Technology of Complete Isolating and Wide-range Resistance In-circuit Measurement

本文提出了一种基于单片机的电阻在线测量新技术 ,同时给出了程控激励源和高准确度程控差动放大器电路 ,论述了全隔离宽量程电阻在线“直接测量”原理。

This paper puts forward a new technology of resistance in circuit measurement based on single chip computer.The circuits of the programmable exciting signal generator and the programmable differential amplifier are presented. The principle of resistance in circuit “direct measurement” is recommended. It can improve the accuracy and extend up the measuring rang of the previous isolating technique.