KR20220045614A - Electronic fiber temperature sensor that detects body temperature and clothing using the same - Google Patents

Abstract

Disclosed are an electronic fiber temperature sensor installed on clothing worn by a user to detect a user's body temperature and clothing for measuring a user's breathing using the same. The electronic fiber temperature sensor comprises: at least one kind of permittivity yarn constituting clothing; a reinforced carbon fiber in the form of yarn forming at least part of the clothing by being mixed with the permittivity yarn and having graphene on the surface thereof; and an electronic element supported by the clothing and connected to both ends of the reinforced carbon fiber. The electronic element includes a power supply unit for applying a voltage to both ends of the reinforced carbon fiber, a signal detection unit for detecting a physical quantity generated or changed in the reinforced carbon fiber, and an output unit for outputting a detection signal detected by the signal detection unit or a biosignal corresponding thereto.

Description

Electronic fiber temperature sensor that detects body temperature and clothing using the same

An embodiment of the present invention relates to a fabric-type temperature sensor, and more particularly, to an electronic fiber temperature sensor installed on clothes worn by a user to detect a user's body temperature, and clothes for measuring a user's respiration using the same.

Electronic Textile (or Textronics) refers to an electrical and electronic material in the form of a fiber that can produce, store, or transmit an electrical signal or an optical signal. The material of such electronic fiber may have various forms such as yarn, woven fabric, knitted fabric, non-woven fabric, etc., and due to the characteristics of the material, it is superior in elasticity, wrinkle recovery, flexibility, etc. compared to metal, ceramic, film, sheet, etc., and thus has various shapes It can be applied to electrical and electronic products such as , use, color, etc. Some electronic fibers are composed of fiber-based electronic devices and circuits, and are used as sensors to monitor biological signals such as pulse and body temperature. On the other hand, most of the existing temperature sensors using electronic fibers use a thermistor to measure body temperature. Such a thermistor uses a metal such as platinum having excellent thermal conductivity and a large resistance change according to temperature. However, there is a problem in that metals such as platinum used in thermistors for body temperature measurement are relatively easily oxidized. In addition, the existing sensor for measuring body temperature is attached to clothing, but the elasticity or flexibility is significantly lower than that of clothing, so that the user feels a foreign body and there is a problem in that user convenience is greatly reduced for general users other than specific users to use. As such, in the field of temperature sensor technology for measuring body temperature, there is a need for a method that has a configuration that does not use a metal and can measure body temperature, has flexibility and elasticity of the fiber itself, and does not substantially give a feeling of foreign body to the feeling of use.

An object of the present invention is to provide an electronic fiber temperature sensor that uses a conductive fiber instead of a metal as a component of a sensor for measuring body temperature, has flexibility and elasticity of the fiber itself, and does not substantially give a feeling of foreign body to the feeling of use. Another object of the present invention is to provide a garment capable of measuring a user's respiration using the aforementioned electronic fiber temperature sensor.

An electronic fiber temperature sensor according to an aspect of the present invention for solving the above technical problem is a yarn-type reinforced carbon fiber having a dielectric constant yarn and a dielectric constant yarn mixed with the dielectric constant yarn to form at least a part or cloth of clothing and having graphene on the surface and an electronic device supported by the clothing and connected to both ends of the reinforcing carbon fiber, wherein the electronic device includes a power supply for applying a voltage to both ends of one side of the reinforcing carbon fiber, and is generated or changed in the reinforcing carbon fiber A signal detecting unit for sensing a physical quantity, and an output unit for outputting a sensing signal detected by the signal detecting unit or a biosignal corresponding thereto. In one embodiment, the reinforcing carbon fiber includes a reinforcing carbon fiber for wiring to which one end portion is connected to the electronic device, and a reinforcing carbon fiber for sensing connected in series to the distal end portions of the other side of the reinforcing carbon fiber for wiring, The resistance value of the sensing region including the reinforced carbon fiber for sensing is several hundred ohms. Preferably, the resistance value of the sensing region may be about 200 Ω/m to about 400 Ω/m for the purpose of sensing body temperature. In one embodiment, the electronic fiber temperature sensor may further include a conductive binder that supports or covers the graphene on the surface of the reinforcing carbon fiber for sensing. In one embodiment, the electronic fiber temperature sensor may further include an insulating binder for supporting or covering the graphene on the surface of the reinforced carbon fiber for wiring. In one embodiment, the electronic fiber temperature sensor may further include a resistor, a resistance component, or a resistance component region connected in series between the reinforcing carbon fiber for sensing and the reinforcing carbon fiber for wiring. In an embodiment, the resistor, the resistance component, or the resistance component region may include a first resistor and a second resistor respectively disposed at both end portions of the reinforcing carbon fiber for sensing. Resistance values of the first resistor and the second resistor may be the same. Also, resistance values of the first resistor and the second resistor may be different from each other within a certain range. In an embodiment, the reinforcing carbon fiber for sensing includes a plurality of reinforcing carbon fibers for sensing electrically connected to each other in parallel, and the plurality of reinforcing carbon fibers may be dispersedly disposed in the sensing region. In one embodiment, the plurality of reinforcing carbon fibers for sensing may include a plurality of groups electrically separated from each other. Each of the plurality of groups includes a first sensing reinforced carbon fiber connected to a first conductive pad region at one end of the sensing region, and a second sensing unit connected to a second conductive pad region at the other end of the sensing region. It may include a reinforcing carbon fiber and a conductive polymer disposed between the first and second sensing reinforcing carbon fibers. The conductive polymer may function to lower a resistance value at both ends of each of the plurality of groups. In one embodiment, the first and second reinforcing carbon fibers for sensing may have a pair of comb-tooth structures that engage each other in the form of 1:N and N:1 (N is a natural number greater than or equal to 2). In an embodiment, the electronic device may be connected to another fabric or another reinforced carbon fiber installed in another area of the clothing to detect the second detection signal. In one embodiment, the electronic device, the body temperature based on the detection signal determined as a biosignal among the detection signal and a comparator comparing the detection signal of the signal detection unit with a reference signal, a reference level, or the second detection signal It may further include a biosignal processing unit for measuring. According to another aspect of the present invention for solving the above technical problem, there is provided a garment using an electronic fiber temperature sensor, which measures body temperature, comprising: a dielectric constant yarn forming the garment; It comprises a yarn-type reinforced carbon fiber that forms at least a part of the clothing by mixing with the dielectric constant yarn and includes graphene on a surface thereof, and an electronic device fixed to the clothing and connected to both ends of the reinforced carbon fiber, wherein the The electronic device includes a power supply unit for applying a voltage to both ends of the reinforced carbon fiber, a signal sensing unit sensing a physical quantity generated or changing in the reinforced carbon fiber, and a detection signal detected by the signal sensing unit or a biosignal corresponding thereto An output unit for outputting is provided. In an embodiment, the clothing may include an upper underwear or upper clothing, and the biosignal may include body temperature information. In one embodiment, the output may include a connector or communication subsystem. In one embodiment, the reinforcing carbon fiber includes a reinforcing carbon fiber for wiring to which one end portion is connected to the electronic device, and a reinforcing carbon fiber for sensing connected in series to the distal end portions of the other side of the reinforcing carbon fiber for wiring, The resistance value of the sensing region including the reinforcing carbon fiber for sensing may be several hundred ohms per unit meter. In an embodiment, the clothing may further include a conductive binder supporting or covering the graphene on the surface of the sensing reinforced carbon fiber. In an embodiment, the clothing may further include a resistor connected in series between the reinforcing carbon fiber for sensing and the reinforcing carbon fiber for wiring.

According to the electronic fiber temperature sensor of the present invention and clothing using the same, it is possible to measure body temperature with a temperature sensor that does not use a metal, and to provide clothing that can measure the user's respiration using such a temperature sensor there is. In addition, as an electronic fiber temperature sensor, it is possible to provide a clothing-integrated temperature sensor that does not substantially give a sense of foreign body to the user and a respiration measurement system using the same.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted. The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as “characterized”, “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, one or It should be understood that this does not preclude the possibility of addition or existence of other features or numbers, steps, operations, components, parts, or combinations thereof. The electronic fiber temperature sensor according to this embodiment is provided with a sensing region, an electronic device and wiring, and is integrally disposed on a garment made of fabric, and the garment is worn through reinforced carbon fiber in the sensing region corresponding to a partial region of the garment. It is made to measure the user's body temperature. The garment consists essentially of a dielectric constant yarn and is made to include reinforced carbon fibers in at least some areas. The reinforcing carbon fiber may include a reinforcing carbon fiber for sensing disposed in the sensing region and a reinforcing carbon fiber for wiring disposed between the sensing region and the electronic device. Clothing consists of natural fibers such as wool (wool), hemp (linen), cotton (cotton), silk (silk), artificial fibers such as polyester, nylon, rayon, acrylic, polyurethane, or a combination thereof. fabric, cloth), braid, felt, mat, or combinations thereof. In addition, the clothing may have a structure in which the pique structure, which is a knitted fabric, is formed as a neoprene layer and a separate layer. In this case, the sensing region may be provided with an expansion/contraction pressure of 2.5 to 5 kg/cm 2 as a sensing unit for body temperature sensing, but is not limited thereto. The sensing region includes a dielectric constant yarn and reinforced carbon fiber constituting clothing in at least some regions. The reinforcing carbon fiber may be disposed adjacent to the dielectric constant yarn in the sensing region, or may be interwoven with the dielectric constant yarn and disposed as the weft or warp yarns of the fabric. In the present embodiment, the sensing region may be disposed at a predetermined size in the inner part of the upper garment. The sensing area is arranged to come into contact with the user's skin according to the breathing of the user wearing the clothing. According to this sensing area, when the user's skin comes into contact with the sensing area, a difference occurs in the resistance component connected in parallel with the reinforced carbon fiber for sensing according to the user's body temperature, and the sensing circuit detects the user's body temperature by detecting this difference. is made to Carbon fiber is produced by thermal decomposition of organic materials at a carbonization temperature of 800 to 1,500 ° C. It is a fiber with a diameter of 5 to 15 μm composed of carbon alone, and has an electrical resistance value (resistivity) of 0.5 to 3.0-3 Ωcm. . Carbon fibers may be classified into rayon-based, PAN-based (Polyacrylonitrile-based), pitch-based, and gas phase grown carbon fibers depending on the type of raw material, that is, precursor. In this embodiment, carbon fiber can realize electronic circuits in two-dimensional or three-dimensional weaving, and has mechanical properties such as tensile strength of 1.2 gf/de or more and elasticity of 5% or more, and external forces such as friction and twisting during the manufacturing process using a loom or knitting machine. It is preferable to use one that can withstand In this embodiment, the carbon fiber may be composed of hundreds to thousands of unit carbon fibers as threads or filaments. In addition, if the number of unit carbon fibers is increased, it is possible to increase the electrical resistance value of the carbon fibers or reinforced carbon fibers. For example, the electrical resistance value per 10 m of the carbon fiber in which the carbon fiber is composed of 3000 unit carbon fibers may be about 240Ω. In particular, in this embodiment, a reinforced carbon fiber for arranging graphene on the surface of the carbon fiber is used. If the reinforced carbon fiber is used, electrical conductivity can be increased than that of the carbon fiber. By using such reinforced carbon fiber, it is possible to precisely detect the user's body temperature and increase the reaction speed of the temperature sensor. Moreover, when the device is used to detect respiration according to whether the user's body temperature is sensed, there is an advantage in that the sensitivity to the sensing electrode of the respiration sensing temperature sensor can be improved. The aforementioned reinforcing carbon fiber is manufactured by twisting or covering reinforcing carbon fiber and insulating fiber (thread or filament) in the form of a core-sheath, or manufactured by core-coated composite spinning of reinforcing carbon fiber and insulating fiber, or , it can be manufactured by coating an insulating film on the surface of the reinforced carbon fiber. In addition, the aforementioned reinforced carbon fiber may be manufactured by dispersing graphene on the carbon fiber using a binder. The binder may include a conductive binder or an insulating binder. Specifically, it may further include a conductive binder for supporting or covering the graphene on the surface of the reinforced carbon fiber for sensing, and may further include an insulating binder for supporting or covering the graphene on the surface of the reinforced carbon fiber for wiring. That is, a conductive binder may be used for the reinforcing carbon fiber for sensing, and an insulating binder may be used for the reinforcing carbon fiber for wiring. The material of the conductive binder may be prepared by a conductive paste composition including conductive powder, a photocurable binder, a solvent, and a photocuring initiator. The photocurable binder may include an acrylate compound, and the caprolactone substitution ratio for hydroxy(-OH) of the main chain of the acrylate compound may be in the range of 5 to 21%. The conductive powder may refer to graphene. The solvent may be ethyl carbitol acetate (ECA), ethyl carbitol (Ethyl carbitol), butyl carbitol (Butyl cabitol), butyl acetate (Butyl acetate) and the like. And the photocuring initiator may be used, such as diethoxy acetophenone (Diethoxy Acetophenone, DEAP). The insulating binder may be composed of materials other than the conductive material such as conductive powder among the materials of the conductive binder. In addition, an additive may be further included in the conductive mixture material of the binder and graphene. The additive may include graphite powder and the like. In addition, the reinforced carbon fiber according to the present embodiment, particularly the reinforced carbon fiber for sensing, may further include an insulating layer or a coating layer covering the conductive mixed material. In this case, it is possible to prevent graphene or additives from coming out of the binder and coming into contact with the user's skin or penetrating into the skin. In addition, the reinforced carbon fiber according to the present embodiment may be twisted with a dielectric constant yarn to constitute a multifilament. On the other hand, the electronic fiber temperature sensor of this embodiment is not limited to the configuration using the aforementioned reinforced carbon fiber, for example, a hybrid polymer composite fiber including graphene and carbon nanotubes disclosed in International Patent Publication No. WO2012-124935. It may be implemented to be used instead of reinforced carbon fiber. In this case, the composite fiber is self-aligned with graphene and carbon nanotubes through hydrogen bonding. can be manufactured. The electronic fiber temperature sensor according to this embodiment may use a monofilament yarn including a reinforced carbon fiber and a multifilament yarn together in the sensor area. The reinforced carbon fiber may have a curvature according to the weaving form or method of clothing or fabric for clothing. Of course, the electronic fiber temperature sensor according to this embodiment may use only monofilament yarns including reinforcing carbon fibers or use only multifilament yarns including reinforcing carbon fibers, depending on implementation. The aforementioned electronic device may include a power supply unit and a signal sensing unit. The power supply unit may apply a predetermined voltage to both sides of the sensing reinforced carbon fiber in the sensing region through the wiring. The power supply unit may include a battery, a piezoelectric generator, a solar cell, a thermal cell, and the like. The piezoelectric generator may be a fabric-type piezoelectric generator manufactured using carbon fibers, and solar electricity may also be a fabric-type solar cell manufactured using carbon fibers. The signal sensing unit is connected between the power supply unit and the reinforced carbon fiber for sensing and detects physical components or quantities that occur or change at both ends of the sensing area according to the contact between the user's skin and the reinforced carbon fiber for sensing. The signal sensing unit may measure a voltage that is generated or changed according to an electrical resistance value of the reinforced carbon fiber for sensing. In addition, the signal sensing unit may include a signal amplifying unit for amplifying a signal or a physical quantity from the reinforced carbon fiber for sensing in the connection portion with the reinforced carbon fiber for sensing. The input terminal of the signal sensing unit may correspond to at least one of the input terminals of the signal amplifier as an input unit. In addition, the electronic device may include an output unit for outputting a sensing signal sensed by the signal sensing unit or a biosignal corresponding thereto. The output unit may include a connector or an antenna of a communication subsystem. The communication subsystem may include a communication module for wireless communication, and the wireless communication may include short-range wireless communication, mobile communication, and the like. The connector may be employed by selecting at least one of various existing types. The connector may include a universal serial bus (USB). By using a connector or a communication subsystem, it is possible to connect a mobile terminal such as a smartphone and display body temperature or a breathing pattern using the body temperature on the screen through an application mounted on the mobile terminal. Of course, the biosignal may be transmitted to a health care server or the like and used to monitor personal health care. The wiring may be arranged to form part of the garment using reinforced carbon fiber. The wiring may be prepared in a form in which an insulating coating is formed on a conductive fiber such as reinforced carbon fiber. In addition, the electronic fiber temperature sensor according to this embodiment is provided with a plurality of reinforcing carbon fibers for sensing connected in series between the reinforcing carbon fiber for wiring in which one end portion is connected to the electronic device, and the distal end of the other side of the reinforcing carbon fiber for wiring can do. A plurality of sensing reinforced carbon fibers may be electrically connected to each other in parallel, and may be dispersedly arranged in a sparsely stitched sensing region. A resistance value between both ends of a sensing region including a plurality of sensing reinforced carbon fibers is several hundred ohms (Ω). Preferably, the resistance value at both ends of the sensing region may be about 200 Ω/m to about 400 Ω/m for the purpose of sensing body temperature. In addition, the electronic fiber temperature sensor includes a fabric pad commonly connected to both ends of a plurality of sensing reinforced carbon fibers between the reinforcing carbon fiber for sensing and the reinforcing carbon fiber for wiring, and the corresponding reinforced carbon for each wiring. It may further include a resistor respectively connected in series between the fibers. The resistor may be referred to as a resistive component or a resistive component region, and a material, such as a conductive material or a conductive fiber, having a relative electrical conductivity of several hundred to several thousand times smaller than that of the reinforced carbon fiber, may be used. In particular, in this embodiment, in order to increase the resistance value between both ends of the sensing region, that is, the electrical resistance value between the two nodes to the level of several hundred ohms, a first resistor and a second resistor respectively disposed at both ends of the sensing reinforced carbon fiber are used. can Resistance values of the first resistor and the second resistor may be equal to each other. In this case, the average value of the electrical resistance values of the first resistor and the second resistor may be minimized. That is, when the resistance values of the first resistor and the second resistor are different from each other, a difference between the resistor having the same resistance value and the resistor having a large resistance value may be increased. In this case, when the difference between the resistance values of the first resistor and the second resistor increases beyond a certain range, the actual electrical conductivity increases significantly in most of the sensing region or the reinforced carbon fiber for sensing except for the resistor having a large resistance value. The area may not perform its function of sensing body temperature properly. In addition, the aforementioned electronic device may include a signal sensing unit, a comparator, and a biosignal processing unit. The comparison unit compares the detection signal of the signal detection unit with a reference signal, a reference level, or a second detection signal. Here, the electronic device is integrally installed in another area (different sensing area) of the garment or is connected to another reinforced carbon fiber (reinforced elastic fiber for other sensing) attached by a different type of cloth or fabric to receive the second sensing signal. can detect The second sensing signal may be a signal used to simultaneously perform body temperature sensing in another place without sensing body temperature in one place. In the above-described case, the comparator may operate to simultaneously or sequentially receive two detection signals including the second detection signal and compare the two detection signals with a reference signal or a reference level, or compare the two detection signals to confirm that they are biosignals. The reference signal may be for discriminating a detection signal above a certain level. Comparison of the two detection signals may be performed to determine a biosignal when the difference between the two detection signals is less than a predetermined level. Of course, a combination of these two methods is also applicable to this embodiment. The bio-signal processing unit may measure the body temperature based on the detection signal determined as the bio-signal through the comparator among the detection signals. The sensing signal may be an intensity of a voltage corresponding to the resistance or an intensity of a current corresponding to the voltage. The biosignal processing unit may detect the user's body temperature according to a linearly proportional relationship in a voltage range of about 10V to about 20V in correspondence with the body temperature of about 20 degrees and about 50 degrees. Meanwhile, the biosignal processing unit may operate based on a method in which resistance increases (voltage decreases) as body temperature decreases, or may operate based on a method in which resistance decreases (voltage increases) as body temperature decreases. According to implementation, the electronic device may output the body temperature calculated by the biosignal processing unit through the output unit. Here, the output unit may be implemented as a display device that additionally includes or replaces the connector or communication subsystem, and in this case, may be implemented to display body temperature in numerical form by a liquid crystal display (LED) or the like. In the above-described embodiment, the electronic device may include a sensing circuit and may be attached to clothing by stitching, but is not limited thereto. The stitching may have a shape surrounding the electronic device in the form of a chip or module. In this case, it is possible to provide an electronic device stably fixed to clothes by preventing the electronic device from flowing. The above-described electronic device may include a power supply for supplying a predetermined voltage, and may have a semiconductor chip or a module structure. The electronic device may include hardware components such as a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC). In addition, the aforementioned electronic device may include a hot melt formed in the electrical connection portion for stable electrical connection with the reinforced carbon fiber for wiring. The hot melt is an adhesive in the form of a liquid or film, and it can strengthen the physical connection by enclosing the electrical connection part by heat. The material of the hot melt is preferably transparent. The clothing using the electronic fiber temperature sensor according to the present embodiment is clothing for measuring biological signals such as body temperature, and is mixed with at least one or more dielectric constant yarns forming the clothing and at least some dielectric constant yarns to form at least a part of the clothing and to the surface thereof. It includes a reinforcing carbon fiber in the form of a yarn having graphene, and an electronic device fixed to clothing and connected to both ends of the reinforcing carbon fiber for sensing among the reinforcing carbon fibers. Here, the sensing region disposed at at least one location to be in contact with the skin of a user wearing clothing may include at least one kind of reinforced carbon fiber for sensing in at least a predetermined area. The wiring may include reinforced carbon fiber for wiring, and may be omitted when the electronic device is disposed in close contact with the reinforced carbon fiber for sensing. Clothing may include undershirt, knitwear, shirt, running shirt, sportswear, blouse, top, one piece clothing, and the like. . The electronic device may include a signal detecting unit, a signal converting unit, a comparing unit, a biosignal processing unit, a biosignal storage unit, and a biosignal transmitting unit. The signal converter converts the signal sensed by the signal detector into a form suitable for use by the comparator. The signal converter may include an analog-to-digital converter for converting an analog signal into a digital signal. The biosignal storage unit may store a signal output from the biosignal processing unit for a predetermined period of time. The biosignal storage unit may record a resistance pattern or a voltage pattern according to body temperature in a preset time unit. The bio-signal transmitter may transmit the bio-information stored in the bio-signal storage unit to a preset terminal, application, or host device in the form of a preset transmission signal. The biosignal transmitter may correspond to the communication subsystem. The biometric information may include body temperature information or respiration information based on body temperature information. The electronic fiber temperature sensor according to the present embodiment has a structure different from that of the above-described embodiments in the structure of a sensing circuit including a sensing region disposed on a predetermined portion of clothing. The sensing circuit has a sensing region connected to the electronic device. The sensing region includes a first fabric pad connected to the electronic device, a plurality of first fabric sub-pads branching from the first fabric pad, and a first sensing reinforced carbon fiber extending from each of the first fabric sub-pads; 1 A second fabric to which the reinforcing carbon fibers for sensing and the conductive polymer are interposed, and the reinforcing carbon fibers for sensing extending adjacently, approximately in parallel or in the same curvature, and reinforcing carbon fibers for second sensing of each group are connected A plurality of sub-pads and a second fabric pad commonly connected to the plurality of second fabric sub-pads are provided. That is, the plurality of reinforcing carbon fibers for sensing may include a plurality of groups electrically separated from each other. Each of the plurality of groups includes a first sensing reinforced carbon fiber connected to a first conductive pad region at one end of the sensing region, and a second sensing reinforced carbon fiber connected to a second conductive pad region at the other end of the sensing region. and a conductive polymer disposed between the first and second sensing reinforcing carbon fibers. The partial conductive polymer may be a component covering at least one of the first and second sensing reinforcing carbon fibers. Another conductive polymer may be a component disposed so as to completely cover an area in which the first and second sensing reinforcing carbon fibers are disposed. The aforementioned first and second sensing reinforced carbon fibers may be divided into a plurality of groups and electrically connected in parallel to each other in order to lower an electrical resistance value of a sensing region to a level of several hundreds of ohms. In this case, an insulating member made of an insulating polymer, a fibrous tissue, a woven tissue, or the like may be disposed between adjacent groups for electrical separation between the groups. Among the plurality of groups, the reinforced carbon fibers for first and second sensing of each group may have a pair of comb-tooth structures that interlock with each other in the form of 1:N and N:1 (N is a natural number equal to or greater than 2). The conductive polymer described above may function to lower the resistance value at both ends of each of the plurality of groups each including the first and second sensing reinforced carbon fibers. The electrical resistance value of the sensing region may be calculated by calculating the total voltage between both ends of the plurality of resistance elements in parallel connection. On the other hand, in the above-described embodiment, the present invention is not limited to such a configuration, and may be applied to various types of clothing worn by a person or the like in direct contact with the body. In addition, although the configuration including the resistor in the sensing region has been described in one of the above-described embodiments, the present invention is not limited to such a configuration and may include a configuration in which the resistor is moved to the signal sensing unit side. In this case, the signal sensing unit of the electronic device may include a corresponding resistor or a resistance component in a portion connected to the reinforced carbon fiber for sensing. In addition, although the above-described embodiment has been described as one of the preferred configuration to use the reinforced carbon fiber in the sensing region, the present invention is not limited to such a configuration, it is possible to use a general carbon fiber instead of the reinforced carbon fiber for sensing. In this case, the material or configuration of the carbon fiber for sensing may be adjusted so that the resistance value between both ends in the sensing region including the carbon fiber for sensing in the sensing region is about several hundred ohms. However, in this case, the sensitivity or reaction speed may be slower than in the case of using the reinforced carbon fiber. In addition, although the above-described embodiment has been mainly described using the reinforced carbon fiber for sensing in the sensing region, the present invention is not limited to such a configuration and graphene fibers may be used instead of the reinforced carbon fiber. Those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the technical protection scope of the present invention should be defined by the claims.

Claims (1)

The dielectric constant yarn is mixed with the dielectric constant yarn to form at least a part or fabric of clothing, and includes a yarn-type reinforced carbon fiber having graphene on its surface, and an electronic device supported by the clothing and connected to both ends of the reinforced carbon fiber. And, the electronic device includes a power supply unit for applying a voltage to both ends of one side of the reinforced carbon fiber, a signal sensing unit for detecting a physical quantity generated or changing in the reinforced carbon fiber, and a detection signal detected by the signal sensing unit or this An electronic fiber temperature sensor having an output unit for outputting a corresponding biosignal.