CN-116971074-B - Temperature detection optical fiber sensing fabric, fabric and garment thereof

CN116971074BCN 116971074 BCN116971074 BCN 116971074BCN-116971074-B

Abstract

The invention discloses a temperature detection optical fiber sensing fabric, a fabric and clothing thereof, which are based on a fluorescence temperature sensing principle, and combines optical fibers to provide a yarn type fluorescence optical fiber temperature sensor, wherein the yarn type fluorescence optical fiber temperature sensor can be conveniently woven into the fabric to form the temperature detection optical fiber sensing fabric, and the fabric is integrated into the clothing fabric to prepare intelligent clothing, so that multi-point temperature measurement can be realized. The invention can realize absolute temperature measurement, has high temperature detection precision, perfect fusion of the sensor and the fabric, can realize non-sensing measurement, has strong comfort, is not influenced by sweat, has simple demodulation system, and is convenient for integration with clothing. The invention has good application prospect in the field of intelligent clothing, can be applied to human body temperature monitoring clothing, determines the temperature of different parts of the human body, and provides data support for health monitoring.

Inventors

WANG GUANGYAO
SUN JIANPING
LI TING
ZHANG CHENG
XU JUN

Assignees

中国计量科学研究院
天津工业大学

Dates

Publication Date: 20260512
Application Date: 20230801

Claims (8)

1. A temperature detection optical fiber sensing fabric is characterized by comprising a fluorescent optical fiber temperature sensor and common yarns, wherein the fluorescent optical fiber temperature sensor is yarn-shaped, the fluorescent optical fiber temperature sensor comprises temperature sensitive optical fibers and light transmission optical fibers, the two ends of each temperature sensitive optical fiber are respectively connected with the light transmission optical fibers, the fluorescent optical fiber temperature sensor is used as weft yarns, the common yarns are used as warp yarns and weft yarns, the linear parts of the light transmission optical fibers are interwoven with the warp yarns, the temperature sensitive optical fibers float on the surface of the fabric in a floating long-wire weaving mode or float between the surface layer and the bottom layer of the fabric in a double-layer fabric structure, the bent parts of the light transmission optical fibers do not participate in weaving, float on the surface of the fabric in a sewing mode and are fixed with the surface layer of the fabric, the curvature radius of the bent parts is larger than the bending loss radius of the bent parts of the light transmission optical fibers, and the parts of the light transmission optical fibers left outside the fabric are packaged by using thermoplastic pipes to form bundling optical fibers; The temperature-sensitive optical fiber adopts a coating type structure, the temperature-sensitive optical fiber of the coating type structure comprises a silicon optical fiber or a polymer optical fiber, a side-light-emitting photosensitive structure with side-wall light-emitting and photosensitive capabilities is manufactured on one section of the silicon optical fiber or the polymer optical fiber, the outer surface of the section is coated with a transparent polymer or colloid material doped with organic or inorganic fluorescent particles to form a fluorescent material layer, and the outer surface of the fluorescent material layer is coated with a reflective material to form a reflective layer; or the temperature-sensitive optical fiber adopts a sleeve type structure, the temperature-sensitive optical fiber of the sleeve type structure comprises a sleeve made of opaque heat-conducting material, a section of fluorescent material is filled in the sleeve, two ends of the fluorescent material are respectively inserted into a section of silicon optical fiber or polymer optical fiber, the end surfaces of the two sections of silicon optical fiber or polymer optical fiber are kept smooth, and the sleeve and the inserted silicon optical fiber or polymer optical fiber are fixed through heating or gluing.
2. The temperature-sensing optical fiber sensing fabric according to claim 1, wherein the side-emitting photosensitive structure is a plurality of grooves formed on a silicon optical fiber or a polymer optical fiber.
3. The temperature-sensing optical fiber sensing fabric according to claim 1, wherein the fluorescent material is a light-transmitting polymer material doped with organic or inorganic fluorescent particles.
4. A multi-point temperature detection optical fiber fabric, which is characterized by comprising a fabric body, wherein the temperature detection optical fiber sensing fabric as claimed in any one of claims 1-3 is arranged at a designated position of the fabric body.
5. The multi-point temperature sensing optical fiber fabric according to claim 4, wherein the temperature sensing optical fiber sensing fabric is arranged on the fabric body in such a way that the temperature sensing optical fiber sensing fabric is sewn on the fabric body by yarns, and bundling optical fibers of the temperature sensing optical fiber sensing fabric are sewn on the fabric body by yarns.
6. The multi-point temperature detection optical fiber fabric according to claim 4, wherein the temperature detection optical fiber sensing fabric is arranged on the fabric body in a manner that an invisible pocket and an invisible slot with a zipper are manufactured at a set position of the fabric body, the temperature detection optical fiber sensing fabric is placed in the corresponding invisible pocket, the bundling optical fiber is placed in the corresponding invisible slot, and the zipper is pulled to fix the temperature detection optical fiber sensing fabric and the fabric body.
7. The intelligent garment for detecting the multipoint temperature is characterized by comprising a garment body, a demodulation unit and a signal processing unit; the front piece and/or the back piece of the clothing body comprise the multi-point temperature detection optical fiber fabric according to any one of claims 4-6, each temperature optical fiber sensing fabric on the multi-point temperature detection optical fiber fabric is connected with one demodulation unit through bundling optical fibers of the multi-point temperature detection optical fiber fabric, and signal wires of the demodulation units are input to the signal processing unit in a summarizing way through a wire slot in the clothing body.
8. The smart garment for multi-point temperature detection according to claim 7, wherein the form of signal transmission from the demodulation unit to the signal processing unit adopts analog signal transmission or digital signal transmission; When the analog signal transmission mode is adopted, the demodulation unit comprises a light detector, a photoelectric conversion circuit, an excitation light source and an excitation light source control circuit, wherein the excitation light source is connected with the excitation light source control circuit, the light detector is connected with the photoelectric conversion circuit, and a control line of the excitation light source control circuit and an output signal line of the photoelectric conversion circuit of each demodulation unit are respectively connected to the signal processing unit; When the digital signal transmission mode is adopted, the demodulation module comprises an excitation light source, an excitation light source control circuit, a light detector, a photoelectric conversion circuit and a microcontroller or a microprocessor for demodulation, wherein the excitation light source is connected with the excitation light source control circuit, the light detector is connected with the photoelectric conversion circuit, a control line of the excitation light source control circuit and an output signal line of the photoelectric conversion circuit are both connected with the microcontroller or the microprocessor, the microcontrollers or the microprocessors of the demodulation units are respectively connected with the signal processing unit, and each demodulation unit can independently calculate the fluorescence service life through the microcontroller or the microprocessor and demodulate the temperature of the corresponding temperature optical fiber sensing fabric and then transmit the obtained temperature information to the signal processing unit.

Description

Temperature detection optical fiber sensing fabric, fabric and garment thereof Technical Field The invention relates to the technical field of intelligent clothing production, in particular to a temperature detection optical fiber sensing fabric, a fabric and clothing thereof. Background The development of flexible electronic and optoelectronic devices promotes the improvement of the technical level of intelligent clothing, in particular to the research of sensing devices and detection technologies for clothing based on the optical measurement principle, and provides a new solution for intelligent clothing with high sensitivity, high signal-to-noise ratio and high comfort. The temperature is one of important physical quantities of wearable measurement, the intelligent garment for measuring the multipoint temperature can draw a human body thermal distribution diagram, and the intelligent garment for measuring the multipoint temperature can know the temperature distribution conditions of different parts of the human body or the garment, and has important significance for human body health monitoring and environment perception. The traditional temperature monitoring clothing adopts an electrical measurement mode, and temperature measurement is carried out by using temperature-sensitive resistors or capacitors which are made of metal or conductive polymer materials and are in fiber or plane shapes. For example, chinese patent application CN107467727a proposes an integrated textile-based temperature sensing intelligent garment, the temperature sensor is formed by coating conductive materials such as conductive polymers, metals, conductive polymer mixtures and the like on a fiber or yarn substrate, chinese patent application CN111839472a proposes a flexible temperature sensor for monitoring abnormal body temperature, and temperature measurement is realized by forming interdigital temperature-sensitive resistors on the flexible substrate by ink-jet printing of temperature-sensitive polymers. However, the taking temperature sensor adopting the electrical sensing scheme has the problems of easiness in electromagnetic interference, low signal-to-noise ratio, sweat corrosion and interference, poor comfort and the like. Currently, there is a report of wearable human body temperature detection by using fiber bragg gratings, and chinese patent application CN101708076a proposes a method for implanting a fiber bragg grating temperature sensor into a garment, and a weaving method combining a large tube and a small tube is adopted to implant the fiber bragg grating into a garment fabric. Chinese patent application CN101263938a proposes an intelligent garment for detecting human body temperature by using fiber grating comprising demodulation system, and adopts a wavelength demodulation scheme based on FP tunable filter. Although the compatibility of the sensor and the fabric is improved by the fiber bragg grating, the fiber bragg grating is made of silicon-based fiber materials, is easy to break and has a certain risk to the human body. The fiber bragg grating is suitable for measuring the variation of temperature, and the drift of the initial wavelength influences the accuracy of temperature measurement in absolute temperature measurement. The stress strain variation of the fiber grating also reduces the accuracy and stability of the measurement. Furthermore, fiber gratings and their demodulation systems are complex and expensive, and these deficiencies limit their use in smart garments. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a temperature detection optical fiber sensing fabric, a fabric and clothing thereof. In order to achieve the above purpose, the present invention adopts the following technical scheme: The temperature detection optical fiber sensing fabric comprises a fluorescent optical fiber temperature sensor and common yarns, wherein the fluorescent optical fiber temperature sensor is in a yarn shape, the fluorescent optical fiber temperature sensor comprises a temperature sensitive optical fiber and a light transmission optical fiber, the two ends of the temperature sensitive optical fiber are respectively connected with the light transmission optical fiber, the fluorescent optical fiber temperature sensor is used as weft yarns, the common yarns are used as warp yarns and weft yarns, the linear parts of the light transmission optical fiber are interwoven with the warp yarns, the temperature sensitive optical fiber floats on the surface of the fabric in a floating long-wire weaving mode or is in a double-layer fabric structure, the temperature sensitive optical fiber is located between the surface layer and the bottom layer of the fabric, the bent parts of the light transmission optical fiber do not participate in weaving and float on the surface of the fabric in a sewing mode and are fixed with the fabric, the curvature radius of the bent parts of the light tra