Resistance strain gauge

A resistance strain gauge, longitudinal technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measuring device, measuring device, etc., can solve problems such as errors, difficult positioning, difficulty in observing the pasting coordinates of strain gauges, etc., to achieve convenient pasting, reduce small area effect

CN105241371AInactive Publication Date: 2016-01-13SHANGHAI INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-01-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a resistance strain gauge. A longitudinal sensitive grid and a horizontal sensitive grid are structurally symmetrical in longitudinal and transverse coordinates, and are used for eliminating measurement error under the effect of non-simple load. The longitudinal sensitive grid is divided into two units, and the two units are connected through a short circuit wire; the short circuit wire and a strain gauge substrate are in non-curing connection; the short circuit wire does not participate in deformation; and the horizontal sensitive grid is embedded in the longitudinal sensitive grid area without overlapping and causing interference, and convenient production is achieved. The longitudinal and transverse coordinates are coordinates having light-reflection performance, so that paste of the resistance strain gauge can be done conveniently under the condition of non-ideal illumination condition. Due to reasonable structural characteristics, the center of the longitudinal sensitive grid and the center of the horizontal sensitive grid are symmetrical with a paste center X1, so that longitudinal and horizontal strain values are same with actual strain values under the action of the bending force P; and the longitudinal and transverse coordinates both have light-reflection performance, so that the paste of the resistance strain gauge can be done conveniently under the condition of non-ideal illumination condition.
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Description

technical field

[0001] The invention relates to a resistance strain gauge, in particular to a form and arrangement of resistance versus strain gauges used in components with relatively complicated strain conditions. Background technique

[0002] Resistance strain gauge is a commonly used stress and strain measuring element. It is firmly pasted on the measuring point of the component. After the component is stressed, the strain gauge is deformed due to the strain at the measuring point. The cross-sectional area also changes with the components, and then the resistance changes, and then the resistance change of the strain gauge is measured by a special instrument, and converted into the strain value of the measuring point.

[0003] When the resistance strain gauge works, it is used to measure the real strain of the component by deforming together with the measured component. Due to the fact that the deformation of the component under the action of the load condition has a cer...

Examples

Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 2 As shown, a new type of resistance strain gauge consists of two units of vertical sensitive grid 1, horizontal sensitive grid 2, shorting wire 3, and longitudinal coordinate 4 and horizontal coordinate 5 with reflective performance.

[0019] The vertical sensitive grid 1 and the horizontal sensitive grid 2 are structurally symmetrical on the longitudinal coordinate 4 and the transverse coordinate 5, which are used to eliminate measurement errors under the action of non-simple loads. The longitudinal sensitive grid 1 is divided into two units, and the two units are connected by a shorting wire 3, and the shorting wire 2 is connected to the strain gauge substrate without solidification, the shorting wire 3 does not participate in deformation, and the transverse sensitive grid 2 is embedded in the In the region of the vertical sen...