A passive pressure sensing fiber and its preparation method

A technology for sensing fiber and pressure, which is applied in the field of passive pressure sensing fiber and its preparation, can solve the problems of lack of flexibility, high cost, and difficulty in batch preparation of pressure sensors, so as to improve flexibility and integration convenience, reduce Process difficulty, avoiding the effect of loss of flexibility

Active Publication Date: 2020-07-10
武汉新润兴材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the defects of the prior art, the purpose of the present invention is to solve the problem of difficulty in integration caused by the lack of flexibility of the existing pressure sensor, the dependence on source devices such as light source and power supply, and the fact that it can only be made of metal materials, the cost is high, and it is difficult to batch Preparation and other technical issues

Method used

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  • A passive pressure sensing fiber and its preparation method
  • A passive pressure sensing fiber and its preparation method
  • A passive pressure sensing fiber and its preparation method

Examples

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preparation example Construction

[0055] The invention provides a passive pressure sensing fiber and a preparation method of the fiber so as to realize pressure sensing that is flexible and capable of local real-time detection.

[0056] In order to achieve the above object, according to one aspect of the present invention, a passive pressure sensing fiber is provided, which includes:

[0057] The upper layer of the polymer outer protective layer located on the uppermost layer of the passive pressure sensing fiber, and the multi-layer film composed of two kinds of uniform polymer films that are in contact with each other and arranged side by side alternately arranged on the lower surface of the outer protective layer The upper layer of the middle layer, the core area composed of the same polymer film-like original stacked and arranged on the lower surface of the upper layer of the middle layer, and the two different materials in contact with each other set on the lower surface of the core area The lower layer o...

Embodiment 1

[0091] In Example 1 of the present invention, a passive pressure sensing fiber is firstly provided, which includes:

[0092] The upper layer of the outer protective layer located on the uppermost layer of the passive pressure sensing fiber, and the middle layer of a multi-layer film composed of two kinds of uniform polymer films that are in contact with each other and arranged side by side alternately arranged on the lower surface of the outer protective layer The upper layer, the core area formed by stacking the same film-like originals arranged on the lower surface of the upper layer of the middle layer, and the uniform films of two different materials in contact with each other arranged on the lower surface of the core area The composed lower layer of the middle layer, and the lower layer of the outer protective layer arranged on the lower surface of the lower layer of the middle layer.

[0093] Among them, the two flexible polymer films of the fiber are made of polyether s...

Embodiment 2

[0102] In the real-time example 2 of the present invention, a passive pressure sensing fiber is firstly provided, which includes:

[0103] The upper layer of the outer protective layer located on the uppermost layer of the passive pressure sensing fiber, and the middle layer of a multi-layer film composed of two kinds of uniform polymer films that are in contact with each other and arranged side by side alternately arranged on the lower surface of the outer protective layer The upper layer, the core area formed by stacking the same film-like originals arranged on the lower surface of the upper layer of the middle layer, and the uniform films of two different materials in contact with each other arranged on the lower surface of the core area The composed lower layer of the middle layer, and the lower layer of the outer protective layer arranged on the lower surface of the lower layer of the middle layer.

[0104] Among them, the two kinds of flexible polymer films of the fiber ...

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Abstract

The present invention discloses a passive pressure sensing fiber and a preparation method thereof. The passive pressure sensing fiber comprises: a core and an intermediate layer formed by a symmetricdistribution or a concentric annular distribution of a plurality of films. The core is arranged at a center of symmetry; the intermediate layer is formed by alternately stacking two transparent polymer films with different refractive indices, and photons located in the band gap cannot enter the intermediate layer and are totally reflected by the band gap structure of the intermediate layer; the core is an opaque polymer film layer and is configured to absorb photons transmitted to the intermediate layer; when the intermediate layer is subjected to the external pressure to cause the change in structure, the energy band structure corresponding to the potential field changes, the position of the band gap changes correspondingly, and the wavelength of the photon that can be totally reflected by the intermediate layer changes; and if the natural light is selected as the detection light source, the color of the photon reflected by the different visible light band gaps of the plurality of films changes correspondingly, and the change of the pressure can be detected by determining the color of the reflected light. According to the technical scheme of the present invention, a passive pressure sensing function is realized.

Description

technical field [0001] The invention relates to the technical field of pressure sensing, and more specifically, to a passive pressure sensing fiber and a preparation method thereof. Background technique [0002] Pressure sensing technology is widely used in the medical field and in new medical devices. Especially in postoperative hematoma, burns, chronic venous ulcers and other pressure therapy diseases, the new multifunctional medical textiles integrating various pressure sensing devices can provide real-time local pressure detection for various parts of the patient at the same time, so that the applied pressure of the textiles in The optimal pressure range is 3.99kPa-6.65kPa, to avoid excessive pressure causing further tearing of the wound or too little pressure causing slow healing. [0003] All kinds of traditional pressure sensing devices, such as capacitive sensors, piezoresistive sensors or optical sensors, require power or light sources to provide input, and realize...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01L1/24G02B6/02
CPCG01L1/246G02B6/023
Inventor陶光明徐文鑫任志禾
Owner武汉新润兴材料科技有限公司