Method for automatic resistance adjustment of foil resistance strain gauge and automatic resistance adjustment equipment

Abstract

The invention relates to a method for automatically adjusting resistance of a foil-type resistance strain gauge; it mainly comprises thinning the wire grid of the foil-type resistance strain gauge according to a reverse electroplating method; Accurately find out the amount of work that the resistance strain gage needs to adjust the resistance current; during the measurement process, the actual resistance value of the strain gage to be adjusted is obtained by comparing the resistance strain gage to be adjusted with the standard resistance set in the measurement current; through I‑ The V-F conversion method can accurately obtain the actual power of the resistance strain gauge to be adjusted at the current current; the invention also relates to an automatic resistance adjustment device implementing the automatic resistance adjustment method. Through the invention, the stability, uniformity and accuracy of the resistance value of the product are improved, the resistance regulation efficiency of the product is improved, and the labor cost is reduced.

Description

technical field [0001] The invention relates to a method for automatic resistance adjustment of foil resistance strain gauges, wherein a reverse electroplating method is used in the automatic resistance adjustment method; Automatic resistance adjustment equipment for the method of resistance adjustment. Background technique [0002] A resistance strain gauge (hereinafter referred to as a strain gauge) is a sensitive element that utilizes the principle of "resistance-strain", and the pattern structure unit of the strain gauge is usually formed by processes such as substrate preparation, exposure, and corrosion. Due to the foil rolling and strain gauge manufacturing errors, the thickness and width of the sensitive grid will be dispersed in microns to nanometers. After the strain gauge is corroded and formed, the resistance value cannot all reach the nominal resistance value. Directly used for test measurement. In order to ensure that the resistance value of the strain gauge ...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the above-mentioned problems of low resistance adjustment efficiency, high labor intensity, human factors in the processing process that have a great influence on the sensitive quality of the strain gauge, and the method of automatic resistance adjustment of the electrochemical corrosion strain gauge causes the corrosion liquid to flow into the measurement On the probe, the measurement accuracy of the resistance value is seriously affected, and the real resistance value of the strain gauge cannot be measured accurately and in real time, so that the adjustment amount of the resistance value cannot be controlled. The invention provides an automatic resistance adjustment for the foil resistance strain gauge method, including the following steps:

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