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Flexible and stretchable temperature sensor in knitted structure

A technology of temperature sensor and knitting, which is applied in knitting, thermometer, weft knitting and other directions, can solve the problems of the accuracy of body temperature measurement results, etc., and achieve real-time monitoring of human body temperature, high reliability, and significant therapeutic effects

Inactive Publication Date: 2017-08-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this coating method prevents the temperature sensor from touching the skin, which affects the accuracy of body temperature measurement results. In addition, the existing temperature sensor has hard texture and other characteristics that cannot be changed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Flexible and stretchable temperature sensor in knitted structure
  • Flexible and stretchable temperature sensor in knitted structure
  • Flexible and stretchable temperature sensor in knitted structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Knitted structure flexible and stretchable temperature sensor

[0025] Using nickel wire (diameter: 25μm, Yancheng Yuheng Electric Heating Technology Co., Ltd.) as the temperature-sensitive fiber, use a computer-controlled flat knitting machine (machine number: 14) to intersect it with polyamide and elastic fiber in the form of a coil to form a lining Flexible and stretchable temperature sensor with weft structure ( figure 1 ), wherein the black yarn is the temperature-sensitive fiber, and the rest are the base. By virtue of the good stretch recovery of the elastic fiber, the temperature sensor has good mechanical properties of stretching and repeated stretching. The sensitivity of this temperature sensor is about 0.006°C -1 , which is consistent with the sensitivity of ordinary nickel wire.

Embodiment 2

[0026] Example 2: Washable fabric temperature sensor

[0027] Selection of temperature-sensitive fiber: use metal fiber platinum wire (diameter: 20μm, Shanghai Kaitai Instrument Co., Ltd.), its resistance changes with temperature, and the relationship is approximately linear, that is, ρ=ρ 0 (1+αt), where t is the Celsius temperature at a certain moment, ρ 0 is the resistivity of the platinum wire fiber at 0°C, α is the temperature coefficient of resistance of the material (indicating the relative change of the resistance value of the material when the temperature changes by 1°C), and ρ is the resistivity of the material at t°C.

[0028] Preparation of flexible temperature sensor: Using knitting technology, metal fibers are integrated into knitted fabrics of any structure in the form of three-dimensional coils, such as plain weave ( figure 2 ), wherein the black yarn is the temperature-sensitive fiber, and the rest are the base.

[0029] Washing test of the flexible temperat...

Embodiment 3

[0031] A knitting-based flexible temperature sensor with a plain weave structure is provided. Copper wire (diameter: 50μm, Shanghai Jinheng Superfine Enameled Wire Co., Ltd.) is used as the temperature-sensitive fiber, and it is interlaced with polyamide in the form of a coil to form a flat weave structure by using a computer-controlled flat knitting machine (machine number: 14). Knitted structure temperature sensors such as image 3 As shown, among them, the black yarn is the temperature-sensitive fiber, and the rest are the base.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a flexible and stretchable temperature sensor with a knitted structure, which includes a base body, the base body is a knitted fabric, and temperature-sensitive fibers are integrated into the base body through knitting technology. The invention can comfortably and closely fit the surface of a human body or a biological body, and realizes the purpose of long-term and real-time monitoring of the temperature of a human body.

Description

technical field [0001] The invention relates to the technical field of temperature sensors, in particular to a flexible and stretchable temperature sensor with a knitted structure. Background technique [0002] The basic physiological signals of the human body include temperature, electrocardiogram, respiration and blood pressure, among which temperature physiological signals play a pivotal role in health care. The human body achieves heat interaction and transfer with the environment by regulating the temperature of different parts of its skin. Through real-time and continuous monitoring of human body temperature, not only can it be judged whether the subject has a fever, but also the measured data can be processed and analyzed to provide more guidance for people's daily life, diagnosis and treatment of diseases. For example, to provide guidance on the timing of pregnancy for women who are planning to conceive, to increase the probability of conception; to provide specific...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04B1/14D04B1/22D04B21/00D04B21/20G01K7/22
CPCD04B1/14D04B1/22D04B21/00D04B21/20D10B2101/12D10B2101/122D10B2101/14D10B2101/20D10B2331/02D10B2401/16G01K7/22
Inventor 李乔丁辛张丽娜王宇驰
Owner DONGHUA UNIV
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