Stress sensor, preparation method and electronic skin

Abstract

The invention relates to the field of sensor technology, and discloses a stress sensor, a preparation method and an electronic skin. The stress sensor includes: a dielectric layer (1), used for elastic deformation under the action of an external force; at least one first electrode unit ( 2), having stretchability, disposed on the upper surface of the dielectric layer (1); and at least one second electrode unit (3), having stretchability, disposed on the dielectric layer (1) The lower surface of the first electrode unit (2) and the second electrode unit (3) cross relatively to form a capacitor array; under the action of an external force, the vertical distance of the corresponding relative intersection changes, so that the capacitance on the corresponding capacitor Variety. The stress sensor of the invention can accurately detect the variation of capacitance and has high detection precision.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a stress sensor, a preparation method and an electronic skin. Background technique [0002] At present, stress sensors mainly detect external forces by changing the contact area. Due to many factors affecting the contact area, the detection accuracy is not high, and it is impossible to measure information such as the position of the force application point. In addition, stress sensors are mainly made of special materials such as graphene and carbon nanotubes with excellent properties such as ultra-thin, stretchable, and low resistivity. However, the synthesis of these cutting-edge materials increases the difficulty of sensor production, and the yield rate Low, high production cost. Contents of the invention [0003] The object of the present invention is to provide a stress sensor that can accurately detect the variation of capacitance. [0004] In order to achieve the above ...

AI Technical Summary

Problems solved by technology

[0002] At present, the stress sensor mainly detects external force by changing the contact area. Due to many factors affecting the contact area, the detection accuracy is not high, and it is impossible to measure information such as the position of the force application point.

In addition, stress sensors are mainly made of special materials such as graphene and carbon nanotubes with excellent properties such as ultra-thin, stretchable, and low resistivity. However, the synthesis of these cutting-edge materials increases the difficulty of sensor production, and the yield rate low production cost

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