Resistance strain gauge and resistance strain type sensor

Abstract

The invention provides a resistance strain gauge and a resistance strain type sensor. The resistance strain gauge comprises a flexible substrate and a resistance strain sensing unit attached to the flexible substrate. Extraction electrodes are arranged at the two ends of the resistance strain sensing unit. The resistance strain type sensor consists of a resistance strain gauge and a tested component. The resistance strain gauge and the tested component are deformed together under the effect of the physical quantity; and the physical quantity of the tested component is measured by measuring the resistance variable quantity of the resistance strain gauge during the deformation measurement process. According to the invention, 200% of maximum strain as well as the corresponding physical quantity can be measured. Moreover, the integration degree and the expansibility are high; and the resistance strain gauge and the resistance strain type sensor can be realized easily.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a resistance strain sensor capable of realizing a large-scale strain measurement range, specifically a resistance strain gauge and a resistance strain sensor. Background technique [0002] Traditional strain gauges and strain sensors are usually used to study or verify the stress and deformation of certain components such as machinery, bridges, and buildings under working conditions. With the development of electronics and information technology, the application of strain gauge sensors has gradually expanded to all aspects, and correspondingly higher requirements have been put forward for strain gauge sensor technology. In particular, biomedical devices, wearable electronics and other devices applied to the human body have put forward higher requirements for performance indicators such as the flexibility of the sensor and the large-scale measurement range. Strain sensors mainly ...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a resistance strain gauge and a resistance strain sensor, by attaching a layer of conductive film (ie resistance strain sensing layer) with micron and nanometer gaps on a flexible substrate to form a resistance strain gauge, and then attaching the resistance strain gauge On the measured component, when the measured component is physically deformed, the resistance value of the conductive film will change, thereby obtaining the physical quantity change of the measured component, which solves the problem that the maximum strain measured by the resistance strain gauge in the prior art is small, Problems of low integration and poor scalability

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