Strain sensing material, preparation method and strain sensing system

Abstract

The invention provides a strain sensing material comprising an elastic transparent matrix and inorganic nanoparticles which are doped in the elastic transparent matrix. The inorganic nanoparticles areformed by light blocking material. The strain sensing material has different light transmittance under different stress effects. The invention also provides a preparation method of the strain sensingmaterial and a strain sensing system. According to the strain sensing material, the preparation method and the strain sensing system, stable and real-time detection of the sensor for the strain of the object can be realized by using the light transmittance change before and after deformation. The strain sensing material has the advantages of simple structure, high sensitivity, anti-electromagnetic interference, small volume, low cost, simple manufacturing process and real-time monitoring and effectively solves the problems of complicated manufacturing process and poor anti-interference performance of the present strain sensing materials.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a strain sensing material, a preparation method and a strain sensing system. Background technique [0002] In recent years, smart wearable devices have sprung up like mushrooms after rain, and have gradually attracted the attention of people from all walks of life. Among the many device characteristics, strong stretchability, anti-interference, and repeat stability have become the main directions for the development of stretchable sensors. For example, Bao Zhenan et al. prepared a transparent and stretchable capacitive sensor, which first sprayed single-walled carbon nanotubes on the surface of silicone rubber, and stretched the carbon nanotubes in the longitudinal and transverse directions to form corrugations, while the carbon nanotubes were deformed. The pressure and stretching capacitive sensors were prepared by laminating face-to-face electrodes with high elastic copolyest...

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a strain sensing material, a preparation method and a strain sensing system, which realizes the stable and real-time detection of the strain of the object by the sensor by utilizing the change of light transmittance before and after deformation; the structure is simple, the sensitivity is high, Anti-electromagnetic wave interference, small size, low cost, simple manufacturing process, and real-time monitoring, effectively solving the problems of complex manufacturing process and poor anti-interference of existing strain sensing materials

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