A temperature compensation method for strain sensor

Abstract

The invention discloses a temperature compensation method of a strain gauge transducer, wherein the temperature compensation method relates to the field of strain gauge transducer manufacture. The temperature compensation method comprises the following steps of S1, creating or acquiring a label which is arranged on the strain gauge transducer, and recording the label; S2, respectively acquiring resistance temperature coefficients of four bridge arms of the strain gauge transducer, determining a to-be-compensated bridge arm, solving a compensation wire length L, and correspondingly recording the compensation wire length L and the label; S3, acquiring the label of the strain gauge transducer by compensation wire automatic cutting equipment, and cutting the compensation wire with length of L; and S4, according to the to-be-compensated bridge arm which is displayed by the compensation wire automatic cutting equipment, connecting the compensation wire with the to-be-compensated bridge arm. According to the temperature compensation method, the label on the strain gauge transducer is acquired in a computer-readable manner; and furthermore a compensation wire parameter which corresponds with the label is recorded, thereby realizing no requirement for artificial recording and preventing errors. The compensation wire with the preset length is cut through the automatic cutting equipment, thereby improving cutting efficiency and improving cutting precision.

Description

technical field

[0001] The invention relates to the field of load cell manufacturing, in particular to a temperature compensation method for a strain gauge sensor. Background technique

[0002] In the field of load cells, due to the influence of temperature on the strain gauge and the elastic body, the resistance value of the strain gauge changes, resulting in inaccurate weighing measurement, that is, zero temperature drift, and temperature compensation is required. Generally speaking, temperature compensation is measured and compensated when the load cell has no external load, so the temperature compensation of the load cell is also called zero temperature compensation. Generally, materials with large temperature coefficients such as copper, nickel resistance and cobalt-nickel alloy are used for zero point temperature compensation to ensure compensation accuracy

[0003] In the prior art, the compensation wire for temperature compensation is generally measured and cut with...

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