一种可自动切换量程的宽量程新型自动化电阻测量仪  

The Utility Model Relates to a New Type of Automatic Resistance Measuring Instrument with Large Range Which Can Automatically Shift Gears

作　　者：侯智超 陈培杰 HOU Zhichao;CHEN Peijie(College of Physics and Electronic Engineering,Hubei College of Arts and Sciences,Xiangyang 441053,China)

机构地区：[1]湖北文理学院物理与电子工程学院

出　　处：《大学物理实验》2019年第5期55-59,共5页Physical Experiment of College

基　　金：湖北文理学院大学生创新创业训练计划项目(X201910519072)

摘　　要：设计了一种基于STC89C52单片机控制的宽量程电阻自动测量仪的系统组成结构和功能。该设计根据频率转换法利用NE555、待测电阻构成振荡电路、单片机作为信号处理芯片构成测量电路。该测量仪具有测量精度高、测量范围宽、性能可靠、操作简便、阻值读数直观等优点。It introduces a system structure and function of a wide-range resistance automatic measuring instrument based on STC89C52 single-chip microcomputer control.According to the frequency conversion method,the design uses NE555,the resistance to be measured to form an oscillation circuit,and the single-chip microcomputer as a signal processing chip to form a measurement circuit.The instrument has the advantages of high measurement accuracy,wide measuring range,reliable performance,easy operation and intuitive reading of resistance.

关 键 词：多谐振荡 量程自动转换 单片机 高精度 低功耗 

分 类 号：O6-32[理学—化学]