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Stretch sensor based on flexible pressure sensitive element

A pressure-sensitive element and sensor technology, applied in the field of sensors, can solve the problems of the pressure sensor's inability to bend, poor measurement accuracy, insufficient sensitivity, etc., and achieve the effects of good durability, stable detection data, and increasing the number of contacts

Active Publication Date: 2021-01-01
ZHEJIANG OUREN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing pressure sensors are often not resistant to bending, and the sensitivity is not enough. The error of measuring pressure with the sensor of pressure-sensitive material will reach about 20%, and the measurement accuracy is poor. How to overcome the above technical problems and improve them has become an effort for those skilled in the art. direction

Method used

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  • Stretch sensor based on flexible pressure sensitive element
  • Stretch sensor based on flexible pressure sensitive element
  • Stretch sensor based on flexible pressure sensitive element

Examples

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Effect test

Embodiment 1~4

[0037] Embodiments 1 to 4: A stretch sensor based on a flexible pressure sensitive element, the tactile sensor includes an upper conductive electrode 1, a sensing medium layer 2, and a lower conductive electrode 3, and the upper conductive electrode 1 and the lower conductive electrode 3 The upper surface and the lower surface of the sensing medium layer 2 are respectively connected through the first conductive adhesive layer 4 and the second conductive adhesive layer 5, and the sensing medium layer 2 includes an ethylene-vinyl acetate copolymer foam body 21 and The induction coating layer filled on the surface of the ethylene-vinyl acetate copolymer foam body 21 and in the pores is composed of the following components, as shown in Table 1:

[0038] Table 1

[0039] Example 1 Example 2 Example 3 Example 4 100 parts of silver nano conductor aqueous dispersion 100 copies 100 copies 100 copies 100 copies 3~5 parts of water-based acrylic resin ...

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Abstract

The invention discloses a tensile sensor based on a flexible pressure sensitive element. The tensile sensor based on the flexible pressure sensitive element comprises an upper conductive electrode, asensing medium layer and a lower conductive electrode. The sensing medium layer is obtained by the following steps that silver nano-conductor aqueous dispersion, aqueous acrylic resin, ethanol, polyvinylpyrrolidone, alkylphenol polyoxyethylene ether, polyethylene glycol p-isooctylphenyl ether, bismuth octoate and toluene diisocyanate are mixed, and ultrasonic dispersion is carried out to obtain amixed solution; and the mixed solution is injected into ethylene-vinyl acetate copolymer foam body, and the ethylene-vinyl acetate copolymer foam body injected with the mixed solution is immersed in the foam body. The pre-treated ethylene-vinyl acetate copolymer foam body is obtained by the following steps that the ethylene-vinyl acetate copolymer foam body is immersed in pretreatment liquid and stands still, and then the ethylene-vinyl acetate copolymer foam body is put into an oven for drying to obtain pretreated the ethylene-vinyl acetate copolymer foam body. The tensile sensor based on theflexible pressure sensitive element is bendable and resistant to bending and can sense slight pressure, has high sensitivity at higher pressure, devices with various sensitivities and measuring ranges can be conveniently designed, and the comprehensive accuracy is less than 0.2 % FS.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a touch sensor. Background technique [0002] Tactile sensing plays a very important role in the sensory system of robots. The tactile sense can perceive some surface characteristics and physical properties of objects: softness, hardness, roughness, size, shape, etc. According to the information provided by the tactile sensor, the robot can sense the target object for reliable crawling. The trend of tactile sensors is integration, miniaturization and intelligence. In order to accurately obtain tactile information and be applicable to surfaces of any shape, the tactile sensor is required to have a certain flexibility, so that it can be installed on surfaces of any shape to adapt to different robot applications, and can obtain three-dimensional contact force information, so that it can be more Hold the target object firmly and securely. [0003] The pressure sensor is an importa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/16G01L1/18
CPCG01L1/16G01L1/18
Inventor 涂大记江叔福杨慧慧杨晓明向建军
Owner ZHEJIANG OUREN NEW MATERIALS CO LTD
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