高阻测量仪  

High Resistance Meter

作　　者：赵振业[1] 郭法楼[1] 段光安 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]天津市无线电六厂,天津300100

出　　处：《电子测量与仪器学报》2000年第3期60-63,共4页Journal of Electronic Measurement and Instrumentation

基　　金：国家信息产业部资助项目

摘　　要：本文分析了影响高阻测量精度的主要因素 ,设计了以单片机为核心的高阻测量仪。采用恒流测压法和加压测流法相结合的测量方案 ,运用双屏蔽输入电缆 ,保护接地及优选输入级器件等关键技术 ,使电阻测量可达 1 0 1 6Ω ,电流测量可达 1 0 - 1 3A。This paper mainly analyzed the affecting factor of the measurement accuracy of high resistance meter and discussed the measurement methods, which combines the voltage measurement under condition of constant current with the currant measurement under condition of the constant voltage.The instrument is based on microprocessor control. The high resistance meter adopted the input cable of two shielded layers and technique of guarded ground etc. It measures the resistance as high as 10 16 Ω and measures the current as weak as 10 -13 A.

关 键 词：高阻测量仪 加压测流仪 恒流测压法 保护接地 

分 类 号：TM934.3[电气工程—电力电子与电力传动]