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Tension-sensitive sensor with positive resistance effect

A sensor and pull-sensitive type technology, applied in the field of pull-sensitive sensors, can solve the problems of unusable fields with large deformation, complex structure, and high manufacturing cost, and achieve excellent resistance recovery performance, broad application prospects, and low manufacturing cost. Effect

Active Publication Date: 2017-01-18
SHENZHEN HUIRUI ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the elastic modulus of the sensing material itself, these strain-type resistive sensing elements have the following disadvantages: First, they lack flexibility and elasticity and cannot be bent, so their applications in fields that require complex deformations such as bending and stretching are limited; The second is that the change in mechanical quantity is small, so it cannot be used in fields with large deformation; the third is that the structure is complex and the manufacturing cost is high
Therefore, the application of metal or semiconductor resistance strain sensors in these fields is limited by their elastic modulus.

Method used

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  • Tension-sensitive sensor with positive resistance effect
  • Tension-sensitive sensor with positive resistance effect
  • Tension-sensitive sensor with positive resistance effect

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The pull-sensitivity sensor with positive resistance effect of this embodiment uses conductive rubber as the pull-sensitivity material, and the manufacturing method is as follows:

[0027] The composition ratio and production method of conductive rubber are as follows:

[0028] In the following order, 100 parts by mass of methyl vinyl silicone rubber (brand 110-1, molecular weight 450,000-700,000, vinyl content 0.13-0.22%, Nanjing Dongjue Silicone Co., Ltd.), 2 parts by mass of diphenyl Silicon glycol, 180 parts by mass of silver-plated aluminum powder (particle size 10-20 μm), 15 parts by mass of fumed silica (AEROSIL 150, Evonik Degussa), 2 parts by mass of double 25 vulcanizing agent (2, 5-Dimethyl-2,5-bis(tert-butyl peroxide)hexane), added to the double-roll mill for mixing, the temperature of the mill was set at 45°C, and after the components were mixed evenly, Thin slices.

[0029] Put the well-mixed silicone rubber into a mold with a cavity size of 112mm×200mm×...

Embodiment 2

[0056] According to the pull-sensitivity sensor of making positive resistance effect according to the same method as embodiment 1, but replace the silver-coated aluminum powder (particle diameter 10 μm) of 180 mass parts in embodiment 1 with the silver-coated aluminum powder (particle diameter 10 μm) of 210 mass parts -20μm). Test the law and repeatability of the resistance of the pull-sensing sensor of the positive resistance effect with the stretching deformation in the same manner as described in Example 1, the results are as follows figure 2 shown. The composition of the conductive rubber formulation of this embodiment and the test data of the pull-sensitive sensor are listed in Table 1.

Embodiment 3

[0058] According to the same method as embodiment 1, the pull-sensitivity sensor of positive resistance effect is manufactured, but the silver-coated aluminum powder (particle diameter 10-20 μ m) of 240 mass parts replaces the silver-coated aluminum powder (particle diameter 10 μm) of 180 mass parts in embodiment 1 -20μm). Test the law and repeatability of the resistance of the pull-sensing sensor of the positive resistance effect with the stretching deformation in the same manner as described in Example 1, the results are as follows image 3 shown. The composition of the conductive rubber formulation of this embodiment and the test data of the pull-sensitive sensor are listed in Table 1.

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Abstract

The invention discloses a tension-sensitive sensor with a positive resistance effect. The tension-sensitive sensor comprises a tension-sensitive material and a metal electrode made on the surface of the tension-sensitive material; and the tension-sensitive material is a conductive rubber material with the resistivity between 1.0 * 10<-3> omega.cm and 1.0 * 10<1> omega.cm, prepared through filling a rubber material with a conductive filler. The tension-sensitive sensor with a positive resistance effect has increasing resistance under the action of tension, that is the tension-sensitive sensor having a positive resistance effect, and the tension-sensitive sensor in a tensile deformation range being lower than 100% can generate 1000 times or above resistance change. Resistance change of the sensor before and after tension is converted into a high and low level current, voltage or capacitance signal which can be used for detecting the information of outside action force. The sensor has the advantages of good material flexibility, large mechanical quantity change amplitude and simple structure, so the sensor has wide application prospect in fields of electronic technologies, apparatus instruments, health medical treatment and artificial intelligence.

Description

technical field [0001] The invention relates to a pull-sensing resistance sensor, in particular to a pull-sensing sensor with positive resistance effect. Background technique [0002] In 1885, the British physicist Kelvin discovered that when metals undergo mechanical deformation after being subjected to pressure (tension or torsion), due to the influence of material size (length, cross-sectional area) and material resistivity changes, the resistance value also undergoes characteristic changes. Variation, the strain resistance effect. People obtain the characteristics and magnitude of the material's force from the change of the resistance value, and develop pressure-sensitive and tension-sensitive resistance strain sensors respectively. Tensile sensitive resistance strain sensors widely used at present, referred to as pull sensitive resistance sensors, mainly include metal strain resistance type, semiconductor strain resistance type, alloy strain resistance type and so on. ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/02C08K3/36C08K3/08C08K5/14C08K5/5419C08K7/20G01L1/22
Inventor 李大军李杨徐行涛
Owner SHENZHEN HUIRUI ELECTRONICS MATERIALS
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