Flexible fabric pressure and strain composite sensor

Abstract

The invention relates to a flexible fabric pressure and strain composite sensor. The sensor is characterized by comprising an upper conductive layer fabric, an insulating layer fabric and a lower conductive layer fabric which are stacked in sequence from top to bottom, the upper conductive layer fabric and the lower conductive layer fabric are woven by taking metal-plated conductive yarns as weftyarns and taking elastic yarns as warp yarns; the insulating layer fabric is woven by taking non-conductive yarns as weft yarns and taking non-conductive elastic yarns as warp yarns; the upper conducting layer fabric, the insulating layer fabric and the lower conducting layer fabric are connected into a whole at the two ends of the warp yarn through a surface-inner layer changing three-layer structure, and the tail end of the metal-plated conducting yarn serves as an electrode lead of the flexible fabric pressure and strain composite sensor. The structure stability of an existing capacitive fabric sensor is effectively improved, rapid large-scale preparation is facilitated, pressure detection can be achieved, and meanwhile strain detection can be achieved.

Description

technical field [0001] The invention relates to a flexible fabric pressure and strain composite sensor, which belongs to the technical field of textile and flexible electronics. Background technique [0002] Compared with traditional rigid sensors, flexible sensors have the advantages of deformability, strong size adaptability, and good human-computer interaction. With the rapid development of wearable technology and robot technology, flexible fabric sensors are made by embedding or integrating flexible sensors into soft, lightweight, breathable, stretchable and bendable fabrics, which can conform to the body of the wearer or robot, It can be applied in human motion monitoring, soft robot skin, medical physiological signal monitoring and human-computer interaction and other fields. [0003] Fabric sensors are mainly divided into resistive and capacitive according to their sensing principles. Among them, the resistive fabric sensor measures the force or strain based on the ...

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are: the capacitor plate and the dielectric layer of the capacitive fabric sensor are prone to delamination and peeling during use, the electrode leads are easy to fall off, and the preparation process is cumbersome and difficult to scale up.

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