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Pull-sensitivity sensor with negative resistance effect and manufacturing method thereof

A manufacturing method and sensor technology, applied in the direction of instruments, measuring devices, measuring force, etc., can solve the problems of small change range of mechanical force, inability to bend, lack of flexibility and elasticity, etc., and achieve large change range of force force, excellent flexibility and elasticity , the effect of good stability performance

Active Publication Date: 2018-05-11
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
The application of metal or semiconductor resistance strain sensors in these fields is limited by their own elastic modulus.

Method used

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  • Pull-sensitivity sensor with negative resistance effect and manufacturing method thereof
  • Pull-sensitivity sensor with negative resistance effect and manufacturing method thereof
  • Pull-sensitivity sensor with negative resistance effect and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The pull-sensitivity sensor with negative resistance effect of the present embodiment adopts conductive natural rubber as the pull-sensitivity material, and its manufacturing method is as follows:

[0031] The composition ratio and production method of conductive rubber are as follows:

[0032] In the following order, 100 parts by mass of natural rubber NR (brand SCR5, Hainan rubber), 1 part by mass of antioxidant D (chemical name: diphenylguanidine), carbon black (Raven520U, particle size 58nm, oil absorption value 120m 2 / g, Columbia Chemicals) 120 parts by mass, sequentially added to a two-roll mill for mixing, the temperature of the mill was set at 50°C, and after the components were mixed evenly, the thin sheets were discharged. Put the kneaded conductive natural rubber into a mould, and mold it at 130° C. under a pressure of 15 MPa for 10 minutes to obtain a semi-finished conductive rubber with a thickness of 1 mm.

[0033] The natural rubber semi-finished produc...

Embodiment 2

[0065] combine figure 2 , according to the same method as in Example 1 to manufacture the pull-sensitive electric sensor of negative resistance effect, but with 110 mass parts of carbon black (Raven520U, particle diameter 58nm, oil absorption value 120m 2 / g, Columbia Chemical) replaces the carbon black (Raven520U, particle diameter 58nm, oil absorption value 120m 2 / g, Columbia Chemicals). The properties of the pull-sensitivity sensor were tested in the same manner as described in Example 1, and the results are listed in Table 2.

Embodiment 3

[0067] combine image 3 , according to the same method as in Example 1 to manufacture the pull-sensitivity sensor of negative resistance effect, but with 100 mass parts of carbon black (Raven520U, particle diameter 58nm, oil absorption value 120m 2 / g, Columbia Chemical) replaces the carbon black (Raven520U, particle diameter 58nm, oil absorption value 120m 2 / g, Columbia Chemicals). The properties of the pull-sensitivity sensor were tested in the same manner as described in Example 1, and the results are listed in Table 2.

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Abstract

The invention discloses a pull-sensitivity sensor with negative resistance effect and a manufacturing method thereof, comprising pull-sensitivity materials and metal electrodes made on the surface thereof. The pull-sensitive material is a conductive material with a resistivity between 1.0×102Ω.cm and 1.0×106Ω.cm, which is made by dispersing conductive particles in a rubber matrix and cross-linking with high-energy electron beams or gamma rays. rubber. Under the action of tension, the resistance of the pull-sensing sensor decreases with the increase of deformation, showing a negative resistance effect. By detecting the change of the resistance value, or converting the resistance signal into a current, voltage or capacitance signal, the information of the external force on the sensor can be obtained, so it can be used for mechanical information in the fields of biomechanics, rehabilitation medicine, smart wear and artificial intelligence. Measurement.

Description

technical field [0001] The invention relates to the field of tension-sensitive sensors, in particular to a tension-sensitive sensor with negative resistance effect and a manufacturing method thereof. 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 changes in material size (length, cross-sectional area), the resistance value also undergoes characteristic variation, that is, 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. At present, the widely used resistance strain sensors mainly include metal strain resistance type, semiconductor strain resistance type, alloy strain resistance type and so on. However, due to the limitation of the elast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22
Inventor 李大军李杨徐行涛方斌
Owner SHENZHEN HUIRUI ELECTRONICS MATERIALS
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