JP2020121008A - Electrode body array placeable in garment and garment - Google Patents

Abstract

To solve a problem in a wearable device in which a biological signal is a feeble electric signal, and therefore the measurement easily becomes unstable due to a motion artifact occurring when the contact pressure between an electrode and skin is changed by respiratory movement, and particularly, stable measurement is difficult over the whole measured part.SOLUTION: An electrode body array placeable to a garment 10 includes multiple electrode bodies 20. Each of the multiple electrode bodies comprises a body part, and an electrode part provided in the surface of the body part and having at least multiple conductive fibers extending outward from the surface. The electrode body array is provided that has at least one of the three-dimensional shape according to the surface shape of the part for the measurement where the electrode body comes in contact therewith and the hardness according to the contacting part.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode body array and clothes that can be arranged on clothes, and more particularly to an electrode body array and clothes for clothes-type wearable devices.

In recent years, sensor devices that can be worn on the human body have attracted attention, and it is expected that clothing-type wearable devices that can acquire biological signals will lead the new electronics market. In particular, a wearable device capable of measuring an electrocardiogram is a simple measurement method that can be measured simply by mounting electrodes on the skin, and thus various forms of wearable electrocardiographic wear have already been researched and developed (for example, see Patent Document 1). ..).

The inventors of the present application have conducted research and development of a raised electrode in which conductive fibers are raised on the surface of a stretchable sheet body that is used as a biological electrode for pressing a body to collect biological signals. (For example, refer to Patent Document 2).

JP, 2005-70917, A International Publication 2018/139483

Since wearable devices have weak biological signals, measurement is prone to instability due to motion artifacts caused by changes in contact pressure between the electrode and skin due to respiratory movements, etc., especially over the entire measurement target site. There is a problem that stable measurement is difficult.

Then, the objective of this invention is providing the electrode body array and clothing which can acquire a biological signal stably.

According to one aspect of the present invention, there is provided an electrode body array that can be arranged on clothing, comprising a plurality of electrode bodies, each of the plurality of electrode bodies being provided on a main body and a surface of the main body. At least one of the three-dimensional shape according to the surface shape of the site of the measurement object that the electrode body contacts and the hardness according to the contacting site, including an electrode part having a plurality of conductive fibers extending at least to the outside. There is provided the above electrode assembly.

According to the above aspect, each of the plurality of electrode bodies arranged in an array on the clothing has a three-dimensional shape corresponding to the surface shape of the site of the measurement object with which the electrode body contacts and a rigid shape corresponding to the contacting site. By having at least one of the heights, the pressure applied by the electrode bodies can be set within a predetermined range, which improves the contact between each electrode body and the surface of the measurement object, and Motion artifacts of biological signals received from a plurality of electrode bodies are suppressed, and stable and favorable biological signals can be obtained.

According to another aspect of the present invention, there is provided a garment including the electrode body array of the above aspect.

According to another aspect of the present invention, there is provided a garment, which is an electrode body which is provided on the garment and which receives a signal from a measurement target, and which is provided on the surface of the cloth of the garment on the measurement target side. And a functional element or a circuit, comprising: a first main body having heat conductivity; and an electrode section provided on the surface of the first main body and having a plurality of conductive fibers extending at least outward from the surface. The clothing includes a functional circuit body having a second main body portion covering the functional element or circuit, and a wiring portion electrically connected to the electrode body or the input/output portion of the functional circuit body. To be done.

According to the above aspect, the electrode body having the amplifier and the functional circuit body having the functional element or the circuit are arranged on the cloth of the clothing, and a multifunctional wearable device can be realized, and the electrode body and the functional circuit body can be realized. Has flexibility, the wearing feeling of clothes can be improved.

It is a figure which shows the schematic structure of the clothing which concerns on one Embodiment of this invention. It is a schematic sectional drawing for demonstrating a mode that the electrode body array of the clothing which concerns on one Embodiment of this invention contacts a living body. It is sectional drawing which shows the schematic structure of the electrode body and wiring part which concern on one Embodiment of this invention. FIG. 3 is a cross-sectional view for explaining a three-dimensional shape of the electrode body according to the embodiment of the present invention. It is sectional drawing for demonstrating the schematic structure of the other electrode body which concerns on one Embodiment of this invention. FIG. 6 is a cross-sectional view showing a schematic configuration of another electrode body and a wiring portion according to the embodiment of the present invention. FIG. 6 is a cross-sectional view showing a schematic configuration of another electrode body and a wiring portion according to the embodiment of the present invention. It is a figure which shows the schematic structure of the clothing which concerns on other embodiment of this invention. It is the figure which shows the (a) schematic structure of the clothing which concerns on the Example of this invention, and (b) sectional drawing. It is a figure which shows the position of the biological body which the electrode body array of the Example of this invention contacts. It is the electrocardiogram of (a) Example of this invention, and the electrocardiogram of (b) comparative example.

An embodiment of the present invention will be described below with reference to the drawings. Note that elements common to a plurality of drawings are given the same reference numerals, and detailed description of the elements will not be repeated.

FIG. 1 is a diagram showing a schematic configuration of a garment according to an embodiment of the present invention. Referring to FIG. 1, a garment 10 according to an exemplary embodiment of the present invention is electrically connected to a plurality of electrode bodies 20 arranged in an array on a cloth 11 and an input/output unit of the electrode body 20. The wiring unit 30 and the communication unit 40 that is electrically connected to the wiring unit 30 and transmits an output signal are included. The communication unit 40 has a signal processing unit 41, a wireless module 42, and a battery 43.

The electrode body 20 is provided on the cloth 11 of the clothing 10 on the living body side of the subject. The electrode body 20 is formed in a convex shape with respect to the fabric 11. The electrode body 20 can receive a vital sign, for example, a biological signal such as an electrocardiographic signal, by the conductive fiber 24 of the electrode portion 21 provided on the surface coming into contact with, for example, the surface of the living body of the subject. it can. The electrode part 21 which is a set of the conductive fibers 24 sends the biomedical signal to the communication part 40 via the wiring part 30. In the communication unit 40, the signal processing unit 41 processes the biological signal, for example, performs amplification and analog-digital conversion (AD conversion). The wireless module 42 wirelessly transmits the digitized biomedical signal and identification information indicating the position of the electrode body to the measurement/analysis apparatus 100 via a transmission interface and an antenna (neither is shown). The battery 43 can supply power to the signal processing unit 41 and the wireless module 42, and further can supply power to an electric circuit such as an amplifier circuit incorporated in the electrode body 20. When the battery 43 is a secondary battery, the battery 43 may be charged by supplying power from the conductive fiber 24, or may be configured so that power can be supplied by wireless charging using the antenna. ..

FIG. 2 is a schematic cross-sectional view for explaining how the electrode body array of the clothing according to the embodiment of the present invention contacts the living body, and is a transverse cross-sectional view of the vicinity of the chest of the human body. Figure 2 Referring in conjunction with FIG. 1, the plurality of electrode body 20 ₁ to 20 ₅ of the array, in a state where the subject was wearing the garment 10, in contact with skin 111 of the living body 110 of the subject .. Specifically, the electrode portions 21 on the surfaces of the electrode bodies 20 _{1 to} 20 ₅ contact the skin 111. The electrode body 20 has a three-dimensional shape corresponding to the surface shape of the site of the living body 110 with which the electrode portion 21 contacts. As shown in FIG. 2, in the electrode bodies 20 ₂ , 20 ₃ , and 20 ₄ that come into contact with the body surface 110a of the sternum and the depressions of the skin 111 between the ribs (not shown) and the ribs, for example, the cross-sectional shape is hemispherical. It has a trapezoidal shape. By thus determining the three-dimensional shape of the electrode body 20 according to the contacting portion, it is possible to set the pressure (pressure) applied to each portion by the electrode bodies 20 _{1 to} 20 ₅ within a predetermined range. .. As a result, the electrode body 20 can maintain a good contact state even if there is a movement of the living body, for example, the movement of the skin 111 due to a breathing movement, the contact state between the electrode portion 21 and the skin surface changes, and the waveform of the biological signal changes. Disturbed motion artifacts can be suppressed, and stable and favorable biological signals can be acquired. Although the pressure applied will be described later, it is preferably 500 Pa or more and 2000 Pa or less. If it is less than 500 Pa, motion artifacts are likely to occur, and if it is more than 2000 Pa, the electrode body 20 causes excessive pressure and feels uncomfortable.

FIG. 3 is a cross-sectional view showing a schematic configuration of the electrode body and the wiring portion according to the embodiment of the present invention. Referring to FIG. 3, the electrode body 20 is provided on the surface of the fabric 11 and has an electrode portion 21 and a main body portion 22. The electrode portion 21 has a resin layer 23 covering the surface of the main body portion 22 and a plurality of conductive fibers 24 on the outer surface thereof. The plurality of conductive fibers 24 extend at least outside from the surface of the resin layer 23 and are in contact with each other on the outside of the surface. The electrode portion 21 is electrically connected to the wiring portion 30. The wiring part 30 is joined to the fabric 11, for example, sewn.

The electrode body 20 has a convex shape with respect to the fabric 11, and has, for example, a quadrangular shape, an elliptical shape, a perfect circular shape in a plan view, and may have another shape. The size of the electrode body 20 is not particularly limited in plan view, but is, for example, 2 cm to 10 cm in length and width.

The body 22 can be made of at least one material selected from sponge, liquid silicone rubber such as polydimethylsiloxane, epoxy resin, acrylic resin, rubber and metal. You may use combining these materials.

The resin layer 23 is a layer made of an adhesive capable of forming the conductive fibers 24 on the surface of the main body portion 22 as described above. For example, a silylated urethane-based elastic adhesive or an emulsion-based adhesive such as an acrylic emulsion is used. be able to. The resin layer 23 may be a conductive material or an insulating material. The resin layer 23 is preferably made of a material having high adhesiveness with respect to the main body portion 22, and an insulating material is preferable to a conductive material because the material selection range is wide.

One end of the conductive fiber 24 is inserted into and fixed to the resin layer 23, and the other end of the conductive fiber 24 extends to the outside of the resin layer 23 and comes into contact with the other end of the other conductive fiber 24. , Electrically connected.

As the conductive fibers 24, for example, carbon nanofibers, metal fibers, chemical fibers coated with a conductive polymer, metal fibers having a metal plating film formed thereon, or chemical fibers can be used. As the metal material of the metal plating film, a metal having high conductivity such as copper, silver or gold can be used. The wire diameter and fiber length of the conductive fiber 24 can be appropriately selected. The conductive fiber 24 has a wire diameter of, for example, 20 μm or less in consideration of the conductivity of the electrode portion 21, the followability with respect to the deformation of the electrode body 20, the flexibility and the comfort when brought into contact with the body as a biological electrode, and the like. It is preferable that the staple fibers are needle fibers having a length of 0.1 mm or more and 0.5 mm or less. The conductive fibers 24 correspond to the wire diameter and the fiber length of the conductive body 24 so as to stably function as an electrode against expansion and contraction and deformation required for the electrode body 20, and the number of fibers per unit area and the surface of the main body portion 22. The angle is set.

It is preferable that the conductive fiber 24 is arranged so as to cover the entire surface of the main body portion 22 in order to favorably receive the biological signal of the subject. However, the conductive fibers 24 may cover almost the entire surface or a part of the surface of the main body portion 22 as long as it is possible to ensure conduction between them. The conductive fibers 24 may have a grid pattern on the surface of the main body 22, for example. When the main body 22 has a circular shape when viewed in a plan view, the conductive fibers 24 may be, for example, a spiral shape, and the conductive fibers 24 having a concentric annular shape and the radial direction that electrically connects them to each other. The pattern may be a combination of the conductive fibers 24.

The electrode body 20 can be formed using a known method, for example, the method disclosed by the inventors of the present application in International Publication 2018/139483. Specifically, the main body 22 is formed, an adhesive layer is formed on the surface thereof, and one end of the conductive fiber 24 charged by the electrostatic spray gun is inserted into the adhesive layer. Next, the adhesive layer is cured to form the resin layer 23, and one end of the conductive fiber 24 is fixed to the resin layer 23. Next, the wiring portion 30, for example, a conductive thread is connected to the electrode portion 21 by sewing, and the electrode portion 21 is electrically connected to the wiring portion 30. As described above, the electrode body 20 is formed. Since the conductive thread can be easily fixed by sewing the cloth 11, it can be preferably used. The conductive thread may be polyester or nylon thread wound with a metal wire such as a gold wire, a silver wire, a stainless wire, or plated with metal.

FIG. 4 is a cross-sectional view for explaining the three-dimensional shape of the electrode body according to the embodiment of the present invention, showing the cross-sectional shape in the vertical (thickness) direction. Referring to FIG. 4A, the electrode body 20A has a three-dimensional shape with a rectangular cross section and a height h ₁ from the bottom surface. Referring to FIG. 4B, the electrode body 20B has a three-dimensional shape with a rectangular cross section and a height h ₂ from the bottom surface. The height h ₂ is smaller than the height h ₁ of the electrode body 20A shown in FIG. The electrode bodies 20A and 20B having different heights can be used according to the surface shape of the part of the living body 110 with which the electrode portion 21 contacts. For example, when the part where the electrode part 21 contacts is recessed rather than the surroundings, it is better to use the electrode body 20 having a height higher than that of the surrounding electrode body 20 so that the contact state with the skin is better and the motion artifact is reduced. it can.

Referring to FIG. 4C, the electrode body 20C has a trapezoidal cross-sectional shape in which one side is higher than the other side. 20 C of electrode bodies are suitable when the site|part which the electrode part 21 contacts with respect to cloth (not shown) inclines, for example, can be suitably used for the site|part which goes to a sternum from a rib.

Referring to FIG. 4D, the electrode body 20D has a sectional shape in which the center is raised and the upper portion is hemispherical (or dome-shaped). The electrode body 20D is suitable when the portion with which the electrode portion 21 comes into contact is recessed, and can be suitably used, for example, in the sternum or spine.

The sectional shape of the electrode body 20 is not limited to the sectional shape of the electrode bodies 20A to 20D described above. The three-dimensional shape of the electrode body 20 may be at least one of a cube, a rectangular parallelepiped, a hemisphere, a cone, a pyramid, a polyhedron, and a torus. In the electrode body 20, the electrode part 21 that comes into contact with the living body may be convex or concave depending on the surface shape of the body part.

The electrode body 20 may have hardness according to the part of the living body with which the electrode body 20 contacts. The electrode body 20 may have, for example, a hardness according to the hardness and movement of the body part. The surface of the body is the hardest where bones are close to the surface, for example, near the ribs, sternum and spine, and the muscular regions are relatively hard for biceps and quadriceps and relatively soft for the abdomen. .. For the electrode body 20, it is preferable to use a main body 22 made of a soft (small hardness) material when used in a hard part, and to use a hard (large hardness) material when used in a soft part. As a result, the pressure applied to each electrode body 20 can be set within a predetermined range, good contact with the skin surface can be maintained, and motion artifacts of biological signals can be suppressed. In addition, as an example, for a portion that moves a lot, a body 22 made of a soft material is used to follow the movement by the deformation of the body 22 to maintain good contact, and a relatively hard material is used in a portion that does not move. The main body 22 of is used.

The three-dimensional shape or hardness of the electrode body 20 may be determined based on the biological signal of the measurement target received by the electrode body 20. More specifically, the contact property of the electrode portion 21 of the electrode body 20 with the skin surface is evaluated by observing whether the waveform of the received biological signal is appropriate or observing the waveform of the biological signal at a predetermined time (period). , It may be determined by evaluating whether or not motion artifacts occur. By this evaluation, the three-dimensional shape of the electrode body 20, for example, the height of the surface of the electrode portion 21 from the bottom surface and/or the surface shape of the contacting portion is adjusted and determined. Further, the hardness of the electrode body 20 is adjusted and determined by this evaluation.

The three-dimensional shape or hardness of the electrode body 20 may be determined based on the measurement value of the pressure sensor provided at the position where the electrode body 20 is arranged. More specifically, a pressure sensor is installed on the surface of the electrode portion 21 of the electrode body 20, and the pressure applied to the electrode portion 21 is measured in the state where the clothing 10 is put on. According to the study by the inventors, the adhesion pressure is preferably 500 Pa or more and 2000 Pa or less, as described above. If it is less than 500 Pa, motion artifacts are likely to occur, and if it is greater than 2000 Pa, the electrode body 20 causes excessive pressure and feels uncomfortable. A contact pressure measuring device (model AMI3037-2) manufactured by A.M.I. Techno Co., Ltd. was used for measuring the pressure. By measuring the pressure, the three-dimensional shape and/or hardness of the electrode body 20 is adjusted and determined in the same manner as described above.

FIG. 5 is a sectional view for explaining a schematic configuration of another electrode body according to the embodiment of the present invention. Referring to FIG. 5A, the electrode body 20E has at least one of a gas and a liquid sealed in the space 22a inside the main body portion 22. For example, the main body 22 is made of polydimethylsiloxane, and by enclosing air therein, the elasticity of the main body 22 can be easily adjusted, and the pressure applied to the surface of the living body can be satisfactorily adjusted. The same effect can be obtained by enclosing a liquid, for example, water.

Referring to FIG. 5B, the electrode body 20F has a space 22b provided inside the main body 22 and three cylindrical coil springs 25. Both ends of the coil spring 25 are fixed to the bottom surface side and the top surface side of the body portion 22, respectively. The coil spring 25 is arranged so as to exert a force in a repulsive direction against the compression from the surface of the living body (on the paper surface of FIG. 5B) to the electrode body 20F, that is, the surface of the living body is contacted. A force acts in the direction of doing. Thereby, the applied pressure can be adjusted, and even if a dynamic force acts on the electrode body 20F due to the movement of the living body, the coil spring 25 expands and contracts, so that the electrode portion 21 can be brought into good contact with the surface of the living body. The number of coil springs 25 is not limited to three, and may be two or less or four or more. Further, another type of spring, for example, a leaf spring may be used as long as the direction of the force of the spring instead of the coil spring 25 is the same as that of the coil spring 25.

FIG. 6 is a sectional view showing a schematic configuration of another electrode body and a wiring portion according to the embodiment of the present invention. Referring to FIG. 6, the electrode body 20G is provided on the surface of the fabric 11 and has an electrode portion 21 and a main body portion 22G. The main body portion 22G includes a circuit portion 60 having an amplifier circuit 64 therein, and a wiring 31 that electrically connects the electrode portion 21 and the circuit portion 60. When the conductive fibers 24 of the electrode portion 21 come into contact with, for example, the surface of the living body of the subject, the electrode portion 21 receives the biological signal and sends it to the amplification circuit 64 of the circuit portion 60 via the wiring 31 and the amplification circuit 64. The biological signal is amplified by. The amplifier circuit 64 functions as an electrocardiographic amplifier circuit that amplifies an electrocardiographic signal.

The circuit section 60 may be provided with an electrical stimulation circuit. As a result, an electric signal is applied from the electrode section 21 to the muscle of the living body, and the strain generated in the measurement section due to the stimulation is detected by a strain detecting element (not shown) provided in the circuit section 60, whereby the muscle activity state is detected. Can be detected.

The circuit unit 60 includes an amplifier circuit 64 having a flexible substrate 63 on which an IC chip 61 having a built-in differential amplifier and a passive element 62 such as a resistance element and a capacitor are mounted, an electrode pad 67, a flexible substrate 63 and electrodes. It has a flexible wiring 66 for connecting the pad 67.

The circuit part 60 may have a sensor as a modification in addition to the amplifier circuit 64 or instead of the amplifier circuit 64. The sensor may be mounted on the flexible substrate 63 in the same manner as the IC chip 61, for example. The sensor is, for example, an acceleration sensor, an angular velocity sensor, a pressure sensor, a temperature sensor, or the like. Since the acceleration sensor and the angular velocity sensor can detect the movement and the posture of the electrode body 20G, the acceleration sensor and the angular velocity sensor can detect the movement and the posture of the subject wearing the clothes having the electrode body 20G. Further, since the pressure sensor can detect the contact pressure between the electrode body 20G and the test object, the pressure sensor detects the degree of contact of the electrode body 20G with the living body of the subject, and the living body received by the electrode portion 21. It can be used to determine if the noise in the signal (eg, electrocardiogram) is due to motion artifacts. The sensor is preferably a MEMS (Micro Electro Mechanical Systems) sensor in that it is small (size of several millimeters square) and lightweight.

As another modified example, the circuit unit 60 may include an actuator, an antenna, an integrated circuit chip, an electric circuit, a battery, a display device, or the like as a functional element or a functional circuit in addition to the amplifier circuit 64 or instead of the amplifier circuit 64. Alternatively, a microphone, a magnet, a heater, a motor, a pump, or the like may be provided.

The flexible substrate 63 has a film body 65 provided on the lower surface thereof, and the film body 65 is not bonded to the cloth 11. Accordingly, since the flexible substrate 63 has flexibility, it can be deformed even when stress is applied from the outside, so that the stress can be relaxed. For the flexible substrate 63, for example, a polyimide film or a polyimide thin plate having copper foils formed on both sides can be used.

The electrode pad 67 is formed of a flexible material, and a connection terminal 68a is attached to the lower surface of the electrode pad 67 by, for example, a conductive paste to be electrically connected. The connection terminal 68a is detachably fitted or joined to the connection terminal 68b provided on the fabric 11, and is electrically connected. The connection terminals 68a and 68b have conductivity, and for example, a metal hook used for clothing, a conductive hook-and-loop fastener, or the like can be used. The connection terminals 68 a and 68 b output to the wiring section 30 a biological signal received by the electrode section 21 or a signal processed by the circuit section 60. The connection terminals 68a and 68b supply signals and power from the wiring section 30 to the circuit section 60.

The flexible wiring 66 has a base material made of a flexible insulating material and a wiring film (not shown) inside or on the surface thereof, and has, for example, a zigzag shape in plan view, and a plurality of "U"-shaped shapes are combined. It is formed in a shape or the like. One end of the wiring film is electrically connected to the electrode pad 67 by a conductive member such as a conductive paste or solder, and the other end is electrically connected to a terminal of the flexible substrate 63. The flexible wiring 66 is elastically deformable from the structure described above. Further, the flexible wiring 66 may have a ribbon shape if the material itself has sufficient flexibility.

FIG. 7 is a cross-sectional view showing a schematic configuration of other electrode bodies and wiring portions according to the embodiment of the present invention. Referring to FIG. 7, the electrode body 20H is provided on the surface of the fabric 11 and has an electrode portion 21 and a main body portion 22H. The electrode body 20H is a modification of the electrode body 20G shown in FIG. 6, and the same reference numerals are used for the common constituent elements and the description thereof is omitted. The main body portion 22H has a circuit portion 70 including an optical sensor 74 therein. The electrode part 21 is configured such that the conductive fiber 24 is not arranged so that a part of the surface thereof transmits light, and a window 21a for a so-called optical sensor 74 is provided. Thereby, the optical sensor 74 can irradiate a living body with light and can receive an optical signal from the living body. As the optical sensor 74, for example, a photoelectric pulse wave sensor, a blood oxygen saturation sensor, or a blood glucose level sensor can be used. Further, the electrode body 20H is provided with a temperature/humidity sensor for measuring the temperature and humidity of the space between the surface of the living body and the clothing by providing the probe 72 so as to be exposed from the electrode body 20H in the circuit section 70. You can

According to the present embodiment, each of the plurality of electrode bodies 20 arranged in an array on the fabric 11 of the garment 10 is provided on the body portion 22 and the surface of the body portion 22 and extends at least outward from the surface. By including the electrode part 21 having a plurality of conductive fibers 24, and having a three-dimensional shape corresponding to the surface shape of the part of the living body 110 with which the electrode part 21 of the electrode body 20 contacts, each electrode body 20 can be attached. The pressure can be set within a predetermined range. Thereby, the contact property between each electrode body 20 and the skin surface becomes good, the motion artifacts of the biomedical signals received from the plurality of electrode bodies 20 arranged in an array are suppressed, and stable and good biomedical signals can be measured. Is possible. Further, each of the plurality of electrode bodies 20 has a hardness according to the part of the living body 110 with which the electrode part 21 comes into contact, for example, a hardness according to the hardness of the part, so that the applied pressure is within a predetermined range. Can be set to, and the motion artifact of the biomedical signal is suppressed, and it becomes possible to stably acquire a good biomedical signal.

FIG. 8: is a figure which shows the schematic structure of the clothing which concerns on other embodiment of this invention. Referring to FIG. 8, a garment 80 according to another embodiment of the present invention includes an electrode body 20G having an amplifier, a sensor unit 81 which is a functional circuit body, and an MCU (microcontroller unit) unit 82 on a cloth 11. The wireless module section 85 for transmitting data to the actuator section 83, the battery section 84, and the external mobile terminal 120, and the wiring section 30 for signals and power supply of these.

The electrode body 20G is an electrode body having the amplifier circuit shown in FIG. 6, and the electrode section 21 receives the biomedical signal, amplifies the biomedical signal by the internal amplifying circuit 64, and outputs it via the wiring section 30. ..

The functional circuit bodies 81 to 85 have the structure shown in FIG. 6 or FIG. 7, and the main body portion 22 has each functional element. The functional circuit bodies 81 to 85 may not have the conductive fibers 24 on the surface, that is, have the flexible main body portion 22G, the circuit portion 60, and the connection terminal 68 in the electrode body 20G shown in FIG. Alternatively, the electrode portion 21 (the resin layer 23 and the conductive fibers 24) may be omitted. With such a configuration, since the functional circuit conventionally mounted in a hard plastic case is covered by the flexible main body 22G and the main body 22G contacts the living body, the wearing feeling of the clothing 80 is improved. ..

Further, the functional circuit bodies 81 to 85 may be provided with insulating fibers instead of the conductive fibers 24. When the insulating fiber comes into contact with the skin, the touch can be improved.

According to the present embodiment, the electrode body 20G having the amplifier and the functional circuit bodies 81 to 85 are arranged on the cloth 11 of the garment 80, and a multifunctional wearable device can be realized, and the electrode body 20G and the functional circuit can be realized. Since the bodies 81 to 85 have flexibility, the wearing feeling of the clothing 80 can be improved.

FIG. 9 is a diagram (a) showing a schematic configuration of a garment according to an embodiment of the present invention and a diagram (b) showing a cross section. FIG. 10 is a diagram showing a position of a living body with which the electrode array of the embodiment of the present invention contacts. Please refer to FIG. 9A, FIG. 9B and FIG. The clothing of the embodiment shown in FIG. 9A is a view as seen from the side in contact with the living body. On the surface of the garment, an electrode body array having a total of 18 electrode bodies arranged horizontally 6 and vertically 3 is arranged. As shown in FIG. 10, the six electrode bodies arranged along A1-A2 shown in FIG. 9(a) extend from the right side of the sternum of the fourth rib of the living body to the left fifth fifth rib over the mid-axillary line. It is arranged so as to be in contact with (V1 to V6). As shown in the cross-sectional view of FIG. 9B, the electrode body of the example has the heights of 8 mm, 8 mm, 2 mm, 2 mm, 2 mm, and 8 mm, 8 mm, 8 mm, 2 mm, 2 mm, respectively in the order of the electrodes V1 to V6 with respect to the cloth. It was set to 5 mm. On the other hand, in the electrode body array of the comparative example, the height was set to 0.5 mm with respect to all the parts V1 to V6.

FIG. 11 is an electrocardiogram of the example (a) of the present invention and an electrocardiogram of the comparative example (b). The horizontal axis of each figure is time (second), and the vertical axis is the voltage of the electrocardiographic signal (arbitrary unit). Electrocardiographic signals for about 3 heartbeats were measured at the same timing in the regions V1 to V6.

With reference to FIG. 11A, in the electrocardiographic signal of the electrocardiogram of the example, all of the waveforms in the regions V1 to V6 have a small peak of the P wave indicating the excitation of the atrium and the subsequent QRS due to the excitation of the ventricle. A high peak on the positive side of the R part of the wave, a peak on the negative side of the S part, and a slightly higher peak on the positive side of the T wave that follow are shown, and it was found that the measurement was performed properly. On the other hand, referring to FIG. 11B, regarding the electrocardiographic signal of the electrocardiogram of the comparative example, the electrocardiographic signal is not obtained at the site V6, and the waveform is disturbed at the site V1 for the first and second heartbeats. No electrocardiographic signal was obtained. Although electrocardiographic signals for 3 heartbeats were obtained at the sites V2 to V5, the waveform of the electrocardiographic signal was significantly distorted as compared with the example, and an appropriate waveform of the electrocardiographic signal was not obtained.

The height of the electrode body corresponding to each site of V1 to V6 in the example was determined based on the measurement of the electrocardiogram so that the motion artifact was suppressed. An electrocardiographic amplifier chip (Model AD8233, manufactured by Analog Devices) and an MCU (Model MSP430F5529, manufactured by Texas Instruments) were used for measuring electrocardiograms in Examples and Comparative Examples.

The preferred embodiment of the present invention has been described above in detail, but the present invention is not limited to the specific embodiment, and various modifications and changes can be made within the scope of the present invention described in the claims. It is possible.

10,80 Clothing 11 Cloth 20,20A to 20H Electrode body 21 Electrode portions 22,22G,22H Main body portion 24 Conductive fiber 30 Wiring portion 60,70 Circuit portion 81 to 85 Functional circuit body

Claims (15)

There is an electrode body array that can be placed on clothes,
Equipped with multiple electrode bodies,
Each of the plurality of electrode bodies includes a main body portion and an electrode portion having a plurality of conductive fibers provided on the surface of the main body portion and extending at least outward from the surface, and a site to be measured with which the electrode body contacts. The electrode assembly array, which has at least one of a three-dimensional shape corresponding to the surface shape of and a hardness depending on the contacting portion. The electrode body array according to claim 1, wherein the three-dimensional shape or hardness of each of the plurality of electrode bodies is determined based on a biological signal of the measurement target received by the electrode body. The electrode body array according to claim 1, wherein the three-dimensional shape or hardness of each of the plurality of electrode bodies is determined based on a measurement value of a pressure sensor provided at a position where the electrode body is arranged. The electrode according to any one of claims 1 to 3, wherein the three-dimensional shape is defined by at least one of a height from a bottom surface of the electrode body in contact with the cloth of the clothing and a surface shape in contact with an object to be measured. Body array. The electrode body array according to any one of claims 1 to 4, wherein the three-dimensional shape is at least one of a cube, a rectangular parallelepiped, a hemisphere, a cone, a pyramid, a polyhedron, and a torus. The electrode body array according to any one of claims 1 to 5, wherein the hardness according to the part to be contacted is the hardness according to the hardness of the part. The electrode according to any one of claims 1 to 6, wherein a space is formed inside the main body, and a force is applied to the space in a direction in which a spring contacts a measurement target. Body array. The electrode body array according to any one of claims 1 to 6, wherein at least one of a gas and a liquid is enclosed in the main body portion. 7. At least one of the plurality of electrode bodies comprises at least one of a sensor, an actuator, an antenna, an integrated circuit chip, an electric circuit, and a battery arranged in the main body portion. The described electrode body array. Clothing comprising the electrode body array according to any one of claims 1 to 9. The electrode body of each of the electrode body arrays is configured to be detachable by a terminal of a conductive fitting member or a joining member, and the terminal functions as an input/output unit of a signal of the electrode body. Clothing. Clothing,
An electrode body provided on the garment for receiving a signal from a measurement target, the flexible first main body provided on the surface of the cloth of the garment on the measurement target side, and the first main body. The electrode body having a plurality of conductive fibers provided on the surface of and extending at least outward from the surface,
A functional circuit body having a functional element or circuit and a second main body portion covering the functional element or circuit;
A wiring portion electrically connected to the input/output portion of the electrode body or the functional circuit body,
The garment, comprising: 13. The garment according to claim 12, wherein the functional circuit body further has a fiber layer provided on a surface of the second body portion and having a plurality of fibers extending at least outward from the surface. The said functional circuit body is a garment of Claim 13 with which the fiber of the said fiber layer has electroconductivity and functions as an electrode part. The garment according to claim 13 or 14, wherein the functional element is a sensor that uses an optical signal, and a portion of the surface of the second main body portion without the fiber layer is used as an optical window to pass the optical signal.

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