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Resistance-type flexible carbon fiber strain sensor and manufacturing method thereof

A technology of a strain sensor and a manufacturing method, applied in the field of flexible sensors, can solve the problems of poor controllability and anti-interference ability, difficult to adjust the working range and sensitivity, etc., and achieve the effects of high sensitivity, reduced manufacturing difficulty and strong controllability

Active Publication Date: 2021-10-26
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a resistive flexible carbon fiber strain sensor and its manufacturing method to solve the problems of the existing resistive flexible strain sensor, such as poor controllability, poor anti-interference ability, difficult adjustment of working range and sensitivity

Method used

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  • Resistance-type flexible carbon fiber strain sensor and manufacturing method thereof
  • Resistance-type flexible carbon fiber strain sensor and manufacturing method thereof
  • Resistance-type flexible carbon fiber strain sensor and manufacturing method thereof

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Embodiment 1

[0039] like Figure 1-3 As shown, this embodiment provides a resistive flexible carbon fiber strain sensor, which includes an upper protective layer 1, a sensitive element 3, a lower protective layer 2, and a wire 4 that are sequentially stacked from top to bottom; wherein, the wires 4 are respectively connected to The left and right ends of the sensitive element 3; wherein, the material for making the sensitive element 3 includes carbon fiber prepreg.

[0040] Specifically, the carbon fiber prepreg is composed of epoxy resin and carbon fiber filaments arranged in parallel in one direction. The carbon fiber filaments arranged in parallel are easy to form micron-scale cracks under stress, and the carbon fiber filaments have good electrical conductivity. This makes the resistive flexible carbon fiber strain sensor provided by the invention have extremely high sensitivity. At the same time, carbon fiber prepreg is a standard commercial material, and its processing technology is ...

Embodiment 2

[0047] This embodiment provides a manufacturing method of the resistive flexible carbon fiber strain sensor of Embodiment 1, such as Figure 7 As shown, the method specifically includes:

[0048] S1: Laminating the multi-layer carbon fiber prepreg to obtain a laminated part;

[0049] Specifically, since the carbon fiber prepreg contains epoxy resin, the epoxy resin is no longer viscous after being heated and cured. Therefore, during the pressing step, it is necessary to simultaneously press the multi-layer carbon fiber prepreg. For example, two layers of carbon fiber prepreg with a thickness of 0.02 mm are pressed together with a fixture, wherein the carbon fiber filaments of the lower carbon fiber prepreg are placed vertically, and the carbon fiber filaments of the upper carbon fiber prepreg are vertical to the lower layer. The placed carbon fiber filaments are placed obliquely at an included angle α.

[0050] S2: heating and curing the pressed part to obtain a first cured ...

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Abstract

The invention relates to the technical field of flexible sensors, and particularly discloses a resistance-type flexible carbon fiber strain sensor and a manufacturing method thereof. The structure of the resistance-type flexible carbon fiber strain sensor comprises an upper protection layer, a sensitive element and a lower protection layer which are sequentially stacked from top to bottom; wires are respectively connected with left and right ends of the sensitive element; and the sensitive element is made of carbon fiber prepreg cloth. The resistance-type flexible carbon fiber strain sensor has the advantages of strong elasticity, high sensitivity, strong controllability, strong anti-interference capability, adjustable sensitivity and working range, and low manufacturing difficulty.

Description

technical field [0001] The invention relates to the technical field of flexible sensors, in particular to a resistive flexible carbon fiber strain sensor and a manufacturing method thereof. Background technique [0002] Resistive strain sensor is a sensor that measures the deformation of an object by changing the resistance of the resistance element in the sensor. It can be used in the fields of human-computer interaction and medical health. For example, installing strain sensors on the joints of the human body can detect joint bending, and pasting multiple strain sensors on different joints can transmit the corresponding joint bending signals to the processor, thereby helping the processor to recognize human motion and realize human-computer interaction. [0003] In the prior art, traditional rigid resistive strain sensors mostly use metals and semiconductors as resistive elements, which have the advantages of reliability, simple manufacture, and low cost. However, this ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
CPCG01B7/16
Inventor 赵全亮王思蕴陈经昊张萌颖何广平狄杰建赵磊苏婷婷梁旭
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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