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1 前言应变测量装置是以电阻应变片(作为检测元件或作为传感器的敏感元件)为主体的力学测量仪器。它实质上是一种测量电阻应变片的微小电阻变化或电阻相对变化量的电子仪器。对于电阻值为120欧姆和灵敏系数K=2.00的应变片而言,分辨1微应变只能产生0.00024
1 Introduction Strain measurement device is a resistance strain gauge (as a sensing element or as a sensor of the sensor) as the main body of the mechanical measurement instruments. It is essentially an electronic instrument that measures the small resistance change or the relative change in resistance of a strain gage. For strain gauges with a resistance of 120 ohms and a sensitivity factor of K = 2.00, resolving 1 microstrain produces only 0.00024