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Full-fiber base flexible sensor and preparation method and application thereof

A flexible, sensor-based technology, applied in the field of flexible sensors, can solve the problems of insufficient sensor sensitivity, difficult to detect small deformation, limited development and application, etc., and achieve the effects of good reproducibility, easy regulation and simple structure

Active Publication Date: 2020-06-05
WUHAN TEXTILE UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of planar sensor generally has the disadvantages of insufficient sensitivity and difficulty in detecting small deformations, which limits its development and application.

Method used

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  • Full-fiber base flexible sensor and preparation method and application thereof
  • Full-fiber base flexible sensor and preparation method and application thereof
  • Full-fiber base flexible sensor and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 , this embodiment provides an all-fiber-based flexible sensor, the all-fiber-based flexible sensor includes an elastic conductive rope core 1 and a sensing layer 2 woven by conductive yarn and wrapped around the outer periphery of the elastic conductive rope core 1, so The resistance of the elastic conductive cord 1 is lower than 5% of the resistance of the sensing layer 2 .

[0038] The elastic conductive rope core is twisted and braided by a plurality of conductive yarns, the diameter of the elastic conductive rope core is 600 μm, and the elongation rate is greater than or equal to 0.01%.

[0039] The length of the full-fiber-based flexible sensor is 5 cm, the diameter is 2 mm, and the elongation is greater than or equal to 0.01%, and the diameter of the conductive yarn in the full-fiber-based flexible sensor is 300 μm.

[0040] The conductive yarn is a blended yarn, which is prepared by blending polyester fibers and stainless steel fibers at a rati...

Embodiment 2-5

[0048] Embodiments 2-5 provide an all-fiber-based flexible sensor. Compared with Embodiment 1, the difference is that the diameter of the elastic conductive rope core is changed to test the breaking strength of a single sensing material, and other operations are the same , which will not be repeated here, the specific experimental conditions, parameters and performance test results are shown in the table below.

[0049]

[0050] It can be seen from the results in the above table that the diameter of the elastic conductive rope core in the linear sensing material affects the breaking strength and sensing performance of the obtained coated linear sensing material. It can be known from the data in the comprehensive table that, under the condition that other conditions remain unchanged, as the diameter of the yarn cord increases, the breaking strength of the obtained full-fiber flexible sensor and its preparation method increases, and the detection range value (detection limit) ...

Embodiment 6-9

[0052] Embodiments 6-9 provide a full-fiber-based flexible sensor. Compared with Example 1, the difference is that the diameter of the conductive yarn in the full-fiber-based flexible sensor is changed, and other operations are the same, and will not be repeated here. For details, the specific experimental conditions, parameters and performance test results are shown in the table below.

[0053]

[0054]

[0055] It can be seen from the results in the above table that the diameter of the conductive yarn in the linear sensing material directly affects the breaking strength and sensing performance of the obtained coated linear sensing material. Based on the data in the table, it can be seen that under the condition of other conditions unchanged, as the diameter of the conductive yarn increases, the breaking strength of the all-fiber flexible sensor increases, the detection range value (detection limit) increases, and the sensitivity increases with the increase of the conduc...

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Abstract

The invention discloses a full-fiber base flexible sensor and a preparation method and application thereof. The full-fiber base flexible sensor comprises an elastic electric conduction rope core and asensing layer which is knitted by electric conduction yarns and is packed on the periphery of the elastic electric conduction rope core, wherein the resistance of the rope core is lower than that ofthe sensing layer. The full-fiber base flexible sensor disclosed by the invention adopts an elastic electric conduction yarn; by a rope knitting method, an electrode layer of a stress sensor is packedin the sensing layer, and a wire-shaped sensing material adopting a wrapper and core structure which compositely integrates the sensor with the electrode, and the wire-shaped sensing material can befurther directly mixed and knitted with ordinary yarns or wire-shaped elastic bodies to obtain pieces to be used as the flexible pressure sensing electronic device; the wire-shaped sensing material isapplied to the fields of detection of human body physical health (pulse ) and total range movement (facial expression, sound producing, and joint movement ) and the like; and the wire-shaped sensingmaterial has the characteristics of being simple in structure, high in stability, simple and convenient in preparation technology, good in reproducibility, high in detection sensitivity and the like.

Description

technical field [0001] The invention relates to the technical field of flexible sensors, in particular to an all-fiber-based flexible sensor and its preparation method and application. Background technique [0002] With the rapid development of artificial intelligence and the popularization of smart terminals, wearable electronic devices present a huge market prospect. As the core part of artificial flexible electronic devices, flexible stress sensors have great application potential in human clinical diagnosis, health assessment, health monitoring, virtual electronics, flexible touch screen, flexible electronic skin, and even industrial robots. Whether it can achieve high resolution, high sensitivity, fast response, low-cost manufacturing and complex signal detection is the key to the widespread promotion of flexible wearable electronic devices. Traditional flexible sensing materials are mostly polymer-based flexible films. Due to the limitations of the materials themselve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0205A61B5/11A61B5/00D04C1/12D04C1/02D02G3/04D02G3/44
CPCA61B5/0205A61B5/1118A61B5/02A61B5/1038D04C1/12D04C1/02D02G3/04D02G3/441D10B2101/20D10B2101/12D10B2101/14
Inventor 钟卫兵王栋柯弈名蒋海青丁新城刘志豪李唯昕
Owner WUHAN TEXTILE UNIV
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