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An all-in-one flexible and stretchable tactile sensor based on the principle of supercapacitive sensing

A tactile sensor and supercapacitor technology, applied in the field of flexible sensors, can solve problems such as easy splitting or even detachment, small sensor measurement factor, and poor long-term repeatability, etc., to achieve improved application range, flexible size adjustment, and high stretch rate. Effect

Active Publication Date: 2022-05-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the various parts of the device are not organically combined as a whole, each part is prone to splitting or even detachment during flexible bending and repeated stretching.
Limited flexibility and stretching lead to defects such as small measurement factor, small measurement range, low sensitivity, and poor long-term repeatability of the sensor

Method used

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  • An all-in-one flexible and stretchable tactile sensor based on the principle of supercapacitive sensing
  • An all-in-one flexible and stretchable tactile sensor based on the principle of supercapacitive sensing
  • An all-in-one flexible and stretchable tactile sensor based on the principle of supercapacitive sensing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides an integrated flexible and stretchable tactile sensor based on the supercapacitive sensing principle, which is used to monitor the pressure of a part with a large range of motion, such as a human body or a robot joint. Electrode layer 1, foam electrolyte layer 2, foam lower electrode layer 3, foam electrolyte layer and foam upper and lower electrode layers constitute a sensor.

[0046] The sensor made in this example is a foam-like, one-piece, three-layer structure that is formed once after freezing, with an overall length of 15mm, a width of 15mm, and a thickness of 2mm; the electrode layer is a mesh-shaped foam structure, which is made of conductive materials graphene and PVA according to Mixed in a certain proportion, then foamed, and obtained after freezing, the thickness is 0.5mm, the area size can be adjusted according to needs, with attached figure 1 and figure 2 The electrode layer is 15mm long and 15mm wide; the electrolyte layer is a...

Embodiment 2

[0059] This embodiment provides an integrated flexible and stretchable tactile sensor based on the supercapacitive sensing principle, which is used to monitor the pressure of a part with a large range of motion, such as a human body or a robot joint. Electrode layer 1, foam electrolyte layer 2, foam lower electrode layer 3, foam electrolyte layer and upper and lower foam electrode layers form a sensor.

[0060] The sensor made in this example is a foam-like, one-piece, three-layer structure that is formed once after freezing, with an overall length of 15mm, a width of 15mm, and a thickness of 2mm; the electrode layer is a mesh-shaped foam structure, which is made of conductive materials polypyrrole and PVA according to Mixed in a certain proportion, then foamed, and obtained after freezing, the thickness is 0.5mm, and the area size can be adjusted as needed. The electrode layer in the drawing is 15mm long and 15mm wide; Calcium and PVA are mixed, then foamed, and obtained afte...

Embodiment 3

[0073] This embodiment provides an integrated flexible and stretchable tactile sensor based on the supercapacitive sensing principle, which is used to monitor the pressure of a part with a large range of motion, such as a human body or a robot joint. Electrode layer 1, foam electrolyte layer 2, foam lower electrode layer 3, foam electrolyte layer and upper and lower foam electrode layers form a sensor.

[0074] The sensor made in this embodiment is a foam-like, one-piece, three-layer structure that is formed once after freezing, with an overall length of 15 mm, a width of 15 mm, and a thickness of 2 mm; the electrode layer is a mesh-shaped foam structure, made of conductive materials graphene and ethylene carbonate The diesters are mixed in a certain proportion, then foamed, and obtained after freezing. The thickness is 0.5mm. The area size can be adjusted according to needs. The electrode layer in the drawing is 15mm long and 15mm wide; , mixed with calcium carbonate and PVA,...

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Abstract

The invention provides an integrated flexible and stretchable tactile sensor based on the principle of supercapacitive sensing, which includes a foam upper electrode layer, a foam electrolyte layer, and a foam lower electrode layer arranged in sequence. The foam electrolyte layer is composed of a solvent, a high The mixture of molecular materials, esters, ionophores and bacterial cellulose is foamed, and the mass ratio of the five is (25-30):(3-4):(4-6):(1-2): (0.4-0.6), the material of the foam upper electrode layer and the foam lower electrode layer is the same, and is made through foaming from a mixture comprising solvent, polymer material, ester, conductive material and bacterial cellulose, and the quality of the five The ratio is (25-30):(3-4):(4-6):(3-4):(0.4-0.6). The sensor of the present invention has the characteristics of integrated structure of the whole device, the electrode and the electrolyte are well combined and there is no microscopic physical gap, and while obtaining high sensitivity and wide detection range based on the principle of supercapacitance, it also has ultra-high flexibility and reliability. Stretch advantage.

Description

technical field [0001] The invention belongs to the technical field of flexible sensors, in particular to an integrated flexible and stretchable tactile sensor based on the supercapacitive sensing principle. Background technique [0002] The development of stretchable, wearable, flexible, and user-friendly soft electronic devices is of great significance to meet people's increasing demands for the complexity and versatility of modern electronics. Strain sensors, which can generate repeatable electrical changes when subjected to mechanical deformation, have a wide range of applications in robotics, sports, health monitoring, and therapy. At present, there are still defects in material properties and device structure in the development of flexibility and stretchability of sensors. For electrode materials, several representative strain sensors so far have used conductive materials such as carbon nanotubes, metals / semiconductors, graphene, and conductive polymers, and realized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/14
CPCG01L1/142
Inventor 孟垂舟王鹏孙桂芬高建卫张昊天杨丽郭士杰李国显林伟民
Owner HEBEI UNIV OF TECH