Automatic resistance adjusting device for resistance strain gauge and resistance adjusting method

A technology of resistance strain gage and strain gage is applied in the field of automatic resistance adjustment device of resistance strain gage, which can solve the problems of high labor intensity, great influence on the sensitive quality of the strain gage, low resistance adjustment efficiency, etc., and achieves high equipment control accuracy and improved Resistance stability and easy operation

Active Publication Date: 2014-03-26
ZHONGHANG ELECTRONICS MEASURING INSTR
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Problems solved by technology

[0009] In order to overcome the problems of low resistance adjustment efficiency of the above method or equipment, high labor intensity, and human factors in the processing process have a great influence on the sensitive quality of the strain gauge, the present invention provides a fully automatic resistance adjustment device and resistance adjustment method for strain gauges, which are very good solve the above problems

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  • Automatic resistance adjusting device for resistance strain gauge and resistance adjusting method
  • Automatic resistance adjusting device for resistance strain gauge and resistance adjusting method

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Embodiment Construction

[0031] Electrochemical resistance adjustment is caused by the direct electrochemical reaction between the metal surface and the surrounding medium. Its principle is: the metal material will undergo a chemical reaction in a solution of certain active cations and anions. When the activity of these cations or anions is much greater than When the atomic charges of the metal are charged, they will migrate and replace each other. If two metals are added to the ionic solution, the atomic activity of the two metals has a certain potential difference. At this time, a positive voltage is applied to the metal with higher activity, and a negative voltage is applied to the other metal to form a potential difference. By adjusting the metal The distance and voltage difference between the plates will form electron migration, which will drive the migration of atoms, so that the metal atoms with high reactivity will migrate to the cathode plate, so that the anode plate will be thinned or reduced...

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Abstract

The invention discloses an automatic resistance adjusting device for a resistance strain gauge and a resistance adjusting method. The device comprises a vertically arranged rack, wherein a Z-axis moving device is mounted on the rack, and a resistance measuring and adjusting device and a CCD (charge coupled device) image acquisition device are fixed on the Z-axis moving device; the automatic resistance adjusting device for the resistance strain gauge further comprises an X-axis moving device, a Y-axis moving device and a gas-liquid combined valve; a product clamping table is mounted on the X-axis moving device; and the resistance measuring and adjusting device is provided with a detecting unit. The adjusting process is controlled by controlling parameters such as current or voltage loaded on the resistance strain gauge, voltage loading time, a resistance adjusting liquid amount and the like, the equipment control accuracy is high, and the operation is easy; the device has a great advantage in the aspects of realizing mass and mechanical operation; and meanwhile, a product whose resistance is adjusted with an electrochemical resistance adjusting method doesn't produce internal stress in a sensitive grid area, so that the stability, the uniformity and the accuracy of the resistance of the product can be improved greatly.

Description

technical field [0001] The invention relates to a resistance adjustment device for a resistance strain gauge, in particular to an automatic resistance adjustment device and a resistance adjustment method for a resistance strain gauge, which can automatically adjust the resistance value of the strain gauge to reach the nominal resistance value. Background technique [0002] Resistance strain gauges (hereinafter referred to as strain gauges) are sensitive elements that use the "resistance-strain" principle, and usually use substrate preparation, exposure, corrosion and other processes to form strain gauge graphic structural units. Due to foil rolling and strain gauge manufacturing errors, the thickness and width of the sensitive grid will be dispersed at the micron to nanometer level. After the strain gauge is corroded and formed, the resistance value cannot fully reach the nominal resistance value. directly for test measurements. In order to ensure that the resistance of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/02
Inventor 晏志鹏刘旭刘鹏张志刚雒平华王智勇卢旸
Owner ZHONGHANG ELECTRONICS MEASURING INSTR
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