采用线性可变电阻测量一维长度及旋转角度的方法  

Method of using linear variable resistance to measure one-dimensional length and rotation angle

作　　者：戴赛萍[1] 徐彬[1] DAI Saiping;XU Bin(Jianghan University,Wuhan 430056,China)

机构地区：[1]江汉大学,武汉430056

出　　处：《空军预警学院学报》2021年第1期36-39,共4页Journal of Air Force Early Warning Academy

摘　　要：利用线性可变电阻的特性,采用Arduino平台,提出了一种一维长度及旋转角度的测量方法.该方法利用电压取样电路、A/D转换器、单片机、LCD显示器和恒压电源,设置了4种长度的量程,只需测量电压就可由液晶显示屏显示长度测量结果.实验结果表明,利用该方法制作的装置理论上精度可以超过常用的游标卡尺和千分尺的装置,拓展了可变电阻作为传感器的新用途.Based on the characteristics of linear variable resistance and Arduino platform,this paper proposes a one-dimensional measurement method of length and rotation angle.In this method,the voltage sampling circuit,A/D(analog-to-digital)converter,single chip microcomputer,LCD display and constant voltage power supply are used to set up four length ranges,and the measurement results can be displayed on the liquid crystal display screen only by measuring the voltage.The experimental results show that the theoretical accuracy of the device made by this method can exceed that of the common vernier calipers and micrometer devices,which expands the new application of the variable resistor as a sensor.

关 键 词：线性可变电阻 长度 旋转角度 Arduino平台 最小二乘法 

分 类 号：TH71[机械工程—测试计量技术及仪器]