Multi-scale flexible light sensation mechanical pressure sensor

Abstract

The invention belongs to the field of pressure sensing, and discloses a multi-scale flexible light sensation mechanical pressure sensor. The sensor comprises a flexible sensing layer, an optical fibergroup and an optical fiber terminal, wherein the flexible sensing layer comprises a flexible supporting layer and a sensing unit group arranged on the flexible supporting layer; the sensing unit group comprises a plurality of sensing units, the optical fiber group comprises a plurality of optical fibers corresponding to the sensing units, one ends of the optical fibers are connected with the optical fiber terminal, the other ends of the optical fibers are sequentially wound on the sensing units, and the optical fiber terminal is provided with an optical fiber power supply module and an optical fiber state monitoring module. The flexible material is innovatively applied to the pressure sensor, so that the complex environment adaptability of pressure measurement is realized; and, the flexible material and the optical fiber sensing technology are creatively combined, and the pressure measurement technology of the flexible light sensation is realized for the first time.

Description

technical field [0001] The invention belongs to the field of pressure sensing, in particular to a multi-scale flexible photosensitive mechanical pressure sensor. Background technique [0002] Pressure sensor is a kind of signal sensing device that converts mechanical signal into electrical signal, and it is also the most widely used type of sensor. Pressure sensors can be divided into traditional mechanical pressure sensors and semiconductor pressure sensors: traditional mechanical pressure sensors have the disadvantages of heavy mass, large volume and no electrical signal output; The advantages of electrical signal output, but because of its inflexibility, semiconductor pressure sensors cannot be used in complex application environments (such as irregular placement planes, uneven pressure, or multi-directional pressure at the same time). The performance of existing pressure sensors in sensing multi-scale mechanical signals is very different. Sensor designs that can sense l...

AI Technical Summary

Problems solved by technology

Pressure sensors can be divided into traditional mechanical pressure sensors and semiconductor pressure sensors: traditional mechanical pressure sensors have the disadvantages of heavy mass, large volume and no electrical signal output; The advantages of electrical signal output, but because of its inflexibility, semiconductor pressure sensors cannot be used in complex application environments (such as irregular placement planes, uneven pressure, or multi-directional pressure at the same time).

The performance of existing pressure sensors in sensing multi-scale mechanical signals is very different. Sensor designs that can sense large-scale mechanical signals (such as buildings, bridges, and roads) cannot be applied to small-scale mechanical signals (such as muscle movement or small vibrations). ) perception

At the same time, most of the existing pressure sensors need to provide continuous power support, which greatly limits the continuous application and acquisition frequency of pressure sensors

It can be seen that the sensory flexibility, sensitivity, energy dependence and environmental adaptability of pressure sensors have become the influencing factors that limit the applicability of pressure sensors, and this problem has become a key technical problem to be solved in the field.

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