WO2016178363A1 - Dispositif de détection de biosignal - Google Patents

Dispositif de détection de biosignal Download PDF

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Publication number
WO2016178363A1
WO2016178363A1 PCT/JP2016/062222 JP2016062222W WO2016178363A1 WO 2016178363 A1 WO2016178363 A1 WO 2016178363A1 JP 2016062222 W JP2016062222 W JP 2016062222W WO 2016178363 A1 WO2016178363 A1 WO 2016178363A1
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WO
WIPO (PCT)
Prior art keywords
neck
neckband
biological signal
detection device
signal detection
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PCT/JP2016/062222
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English (en)
Japanese (ja)
Inventor
亨 志牟田
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株式会社村田製作所
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Publication of WO2016178363A1 publication Critical patent/WO2016178363A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/251—Means for maintaining electrode contact with the body
    • A61B5/256—Wearable electrodes, e.g. having straps or bands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/263—Bioelectric electrodes therefor characterised by the electrode materials
    • A61B5/27—Conductive fabrics or textiles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/352—Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval

Definitions

  • the present invention relates to a biological signal detection apparatus that detects a biological signal.
  • Patent Document 1 discloses an electrocardiogram measuring apparatus capable of measuring an electrocardiogram while performing daily life without taking off clothes.
  • This electrocardiogram measuring apparatus includes a flexible band portion, a reference electrode portion provided on the flexible band portion, and a pair of induction electrode portions.
  • the flexible band portion has a so-called neck band shape that can surround the neck portion of the measurement subject from the rear side, and is formed of, for example, plastic.
  • the flexible band portion can detachably hold the neck portion of the measurement subject by the clamping pressure based on the elastic deformation.
  • the wearing state is maintained by supporting the flexible band portion in the vicinity of the base of the neck portion of the person to be measured in addition to the clamping pressure.
  • an electrocardiogram signal can be detected from the vicinity of the carotid artery of the neck without restraining the limbs or the like by making the device a neckband type.
  • an electrocardiogram signal can be measured without making the person to be measured conscious of wearing the apparatus substantially unconstrained and non-invasively.
  • the thickness of the neck (neck) varies greatly between individuals, and when the neck (neck) is tilted or twisted, the shape of the neck (neck) changes greatly. Therefore, in such a case, the contact state of the induction electrode unit or the like becomes unstable (the close contact state changes), and noise may be easily applied or a biological signal may not be acquired. In particular, the effect is significant when the required contact area is large.
  • An object of the present invention is to provide a biological signal detection device capable of performing
  • a biological signal detection apparatus includes a neckband that can be worn along a circumferential direction of a user's neck, a pair of sensing units that are attached to the neckband and provided with a detector that detects a biological signal.
  • the neckband is formed in a substantially C shape, has elasticity, and biases the sensing unit in a direction to sandwich the neck of the user when worn, and each of the pair of sensing units is connected to the neckband. It is characterized in that it is mounted so as to be swingable around the short direction.
  • the neckband is formed in a substantially C shape, has elasticity, and biases the sensing unit in the direction of sandwiching the user's neck when worn. Further, each of the pair of sensing units is attached so as to be swingable about the short direction of the neckband (that is, swingable in the circumferential direction of the neck). Even if the distances are different, the sensing unit can be brought into close contact with the user's neck. In addition, for example, the contact surface can be held following a movement in which the neck is twisted. As a result, the contact state between the detector and the neck can be kept good regardless of individual differences such as the thickness of the neck and the movement of the neck.
  • each of the pair of sensing units is attached so as to be swingable about the longitudinal direction of the neckband.
  • each of the pair of sensing units is attached so as to be swingable about the longitudinal direction of the neckband (that is, swingable in the axial direction of the neck). It is possible to hold the contact surface following the movement.
  • a biological signal detection apparatus includes a neckband that can be worn along a circumferential direction of a user's neck, a pair of sensing units that are attached to the neckband and provided with a detector that detects a biological signal.
  • the neckband is formed in a substantially C shape, has elasticity, and urges the sensing part in a direction to sandwich the neck of the user when worn, and each of the pair of sensing parts is It is attached so that rocking is possible about the axial direction of a user's neck.
  • the neckband is formed in a substantially C shape, has elasticity, and biases the sensing unit in the direction of sandwiching the user's neck when worn. Furthermore, each of the pair of sensing units is attached so as to be swingable about the axial direction of the neck of the user when worn (that is, swingable in the circumferential direction of the neck). Even if the thickness of the neck is different, the sensing unit can be brought into close contact with the user's neck. In addition, for example, the contact surface can be held following a movement in which the neck is twisted. As a result, the contact state between the detector and the neck can be kept good regardless of individual differences such as the thickness of the neck and the movement of the neck.
  • each of the pair of sensing units is attached so as to be swingable about the neck front-rear direction perpendicular to the axial direction of the user's neck at the time of wearing.
  • each of the pair of sensing units can swing around the neck longitudinal direction perpendicular to the axial direction of the user's neck at the time of wearing (that is, the neck axis Therefore, at the time of wearing, for example, it is possible to hold the contact surface by following a movement such as tilting the neck.
  • spherical heads are formed at both ends of the neckband, and a socket for swinging and rotating the spherical heads is formed at each of the pair of sensing units. .
  • each of the pair of sensing units is attached to both ends of the neckband by a ball joint constituted by a spherical head and a socket that holds the spherical head in a swingable manner. Therefore, at the time of wearing, the contact surface between the detector and the neck can be held by following the movement of the neck freely.
  • the neckband is extendable in the longitudinal direction.
  • the neckband is extendable (that is, the length can be adjusted) in the longitudinal direction (that is, the circumferential direction of the neck), the detector and the neck can be adjusted regardless of the thickness of the neck. It becomes possible to keep the contact state better.
  • the pair of sensing units are connected to each other by electrical wiring passing through the inside of the neckband.
  • the electric wiring passes through the inside of the neckband, for example, it is possible to prevent the occurrence of noise that may occur when the wiring shakes or touches the wiring. Further, when the cable is exposed, measures such as thickening the cable covering are necessary to prevent the cable from being disconnected, but this can be eliminated.
  • the detector is formed so as to protrude from the surface around the sensing unit provided with the detector.
  • the detector is formed so as to protrude from the surface around the sensing unit in which the detector is disposed, the adhesion between the detector and the neck can be further increased.
  • the sensing unit is configured such that a plurality of parts are swingably connected, and each part is configured to be relatively displaceable.
  • the sensing unit is configured such that a plurality of parts are swingably connected, and each part is configured to be relatively displaceable. Therefore, according to the thickness and shape of the neck, each of the plurality of parts can be brought into contact with the neck in a wider area.
  • the detector is a biological electrode made of a stretchable conductive cloth and acquiring electrocardiogram or myoelectricity.
  • a conductive cloth is used for the detector, it is easy to fit the shape of the user's neck and can be brought into stable contact with the neck.
  • the conductive cloth is excellent in air permeability and is not easily stuffy, it can make it difficult for the user to feel uncomfortable even if it is worn for a long time.
  • a step that is recessed in the thickness direction of the conductive cloth is provided on each surface except the surface that contacts the neck of the sensing unit.
  • the biological signal detection device is mounted on the neck of the user.
  • the conductive cloth can be more stably brought into contact with the neck, and the conductive cloth can be prevented from being displaced or pulled out.
  • a photoelectric pulse wave sensor In the biological signal detection apparatus according to the present invention, a photoelectric pulse wave sensor, a piezoelectric pulse wave sensor, an oxygen saturation sensor, a microphone, a displacement sensor, an acceleration sensor, a sweat sensor, a temperature sensor, or a humidity sensor is preferably used as the detector. Can be used.
  • the biological signal detection apparatus preferably further includes a battery housed in the sensing unit and wireless communication means.
  • the battery and the wireless communication means are provided, it is not necessary to connect the cable to another device or a power source, and the cable does not get in the way. Therefore, for example, it is possible to detect a biological signal by wearing for a long time including when the user is active.
  • the present invention it is possible to maintain a good contact state between the detector and the neck regardless of individual differences such as the thickness of the neck and the movement of the neck.
  • FIG. 1 is a perspective view showing an appearance of the biological signal detection apparatus 1 according to the first embodiment.
  • FIG. 2 is a diagram illustrating a state in which the biological signal detection device 1 is mounted on the neck of a user (subject).
  • FIG. 3 is a plan view of the sensing unit 11 constituting the biological signal detection device 1.
  • FIG. 4 is an end view of the sensing unit 11 constituting the biological signal detection device 1.
  • FIG. 5 is a block diagram showing a functional configuration of the biological signal detection apparatus 1.
  • the biological signal detection device 1 is provided with a substantially C-shaped (or U-shaped) neckband 13 that is elastically mounted so as to sandwich the neck from the back side of the user's neck, and is disposed at both ends of the neckband 13.
  • a pair of sensing units 11 and 12 that come into contact with both sides of the user's neck are provided.
  • Each of the sensing units 11 and 12 is provided with various sensors (detectors) for detecting a biological signal (details will be described later).
  • the neckband 13 can be worn along the circumferential direction of the user's neck. That is, as shown in FIG. 2, the neckband 13 is worn along the back of the user's neck from one side of the user's neck to the other side of the neck. More specifically, the neck band 13 includes, for example, a belt-shaped plate spring and a rubber tube that covers the plate spring. Therefore, the neckband 13 is urged so as to shrink inward, and when the user wears the neckband 13, the neckband 13 (sensing units 11 and 12) is in contact with the neck of the user. Retained.
  • a rubber tube it is preferable to use what has biocompatibility as a rubber tube. Moreover, it can replace with a rubber tube and can use the tube which consists of a raw material which has elasticity, such as a plastics.
  • a cable for electrically connecting both sensing units 11 and 12 is also wired. Here, it is desirable that the cable be coaxial in order to reduce noise.
  • each of the pair of sensing parts 11 and 12 is formed with a socket 16b for holding the spherical head 16a so as to be swingable and rotatable. That is, each of the pair of sensing portions 11 and 12 swings at both ends of the neckband 13 by a ball joint 16 having a spherical head portion 16a and a socket 16b that holds the spherical head portion 16a. It is pivotally attached.
  • each of the pair of sensing units 11 and 12 can swing about the short direction of the neckband 13 (or the axial direction of the neck of the user wearing the biological signal detection device 1) (that is, the neck of the neck). (Can be swung in the circumferential direction) and at the same time can be swung around the longitudinal direction of the neckband 13 (or the longitudinal direction of the neck perpendicular to the axial direction of the user's neck) (that is, in the axial direction of the neck) Swingable).
  • Each of the pair of sensing units 11 and 12 is perpendicular to the short direction of the neckband 13 (or the axial direction of the user's neck) and / or the longitudinal direction (or the axial direction of the user's neck). It is only necessary to be able to oscillate about the neck front-rear direction, and a mechanism for limiting (restricting) rotation about the radial direction of the neck may be provided.
  • the neckband 13 has a slide mechanism 13a that can accommodate a part of the neckband 13, for example, so as to cope with a difference in neck thickness (neck circumference) for each user. It is possible to extend and contract (that is, the length can be adjusted).
  • the cable described above is preferably passed through the rubber tube of the neckband 13, the spherical head 16a of the neckband 13, and the socket 16b. Further, it is desirable to seal the hole through which the cable is passed with a sealing material or the like for waterproofing.
  • the sensing part 11 (12) is mainly composed of a conductive cloth 15 having a stretchable shape formed in a cylindrical shape, a main body part 11a in which a front end side concave part 11b on which the cylindrical conductive cloth 15 is covered, and a front end side concave part. And an input terminal 14 provided in 11b.
  • the sensing unit 11 (12) is formed in a lightly curved arc shape so as to easily fit the shape of the neck.
  • the sensing unit 11 has a photoelectric pulse wave sensor 20 in addition to the above configuration.
  • the conductive cloth 15 is used as an electrode for detecting an electrocardiogram signal.
  • the electrocardiogram signal for example, a myoelectric signal or a sweating amount may be detected.
  • a piezoelectric pulse wave sensor instead of or in addition to the photoelectric pulse wave sensor 20, a piezoelectric pulse wave sensor, an oxygen saturation sensor, a sound sensor (microphone) for measuring swallowing sounds and voices, a displacement sensor for detecting neck movement, and body movement
  • An acceleration sensor that detects body temperature, a temperature sensor that detects body surface temperature, a humidity sensor that detects a sweating state, and the like (corresponding to the detector described in the claims) may be used.
  • the photoelectric pulse wave sensor 20 is formed to protrude slightly from the surface around the sensing unit 11 (main body part 11a) where the photoelectric pulse wave sensor 20 is disposed. Yes.
  • the conductive cloth 15 is made of conductive yarn having conductivity, and a knitted fabric having elasticity is preferably used.
  • the conductive cloth 15 is formed in a cylindrical shape so that the inner diameter when contracted is smaller than the tip-side recess 11b and the inner diameter when extended is greater than the tip-side recess 11b.
  • the conductive yarn for example, a resin yarn whose surface is plated with Ag, a carbon nanotube-coated one, or a conductive polymer such as PEDOT may be used.
  • PEDOT a conductive polymer which has electroconductivity.
  • the conductive cloth 15 is preferably subjected to an end treatment such as folding the edge and sewing with a sewing machine, or a cutting and welding treatment using laser or ultrasonic waves.
  • the main body 11a is formed in a substantially quadrangular prism shape (lightly curved quadrangular prism shape) whose corners are rounded (R chamfered) with, for example, resin.
  • the tip side recess 11b is also formed in a substantially quadrangular prism shape (lightly curved quadrangular prism shape) with rounded corners (R chamfered).
  • the input terminal 14 is provided in the both surfaces or single side
  • a step 11c that is recessed in the thickness direction of the conductive cloth 15 is provided on each surface except the surface that contacts the portion. In other words, there is no step (dent) on the surface in contact with the neck, and the step 11c is provided on the other three surfaces.
  • the conductive cloth 15 can be set (or replaced) by covering the tip-side recess 11b with the cylindrical conductive cloth 15. At the same time, the conductive cloth 15 and the input terminal 14 are electrically connected. In addition, the conductive cloth 15 is set in the front-end
  • a photoelectric pulse wave sensor 20 that has a light emitting element 201 and a light receiving element 202 in the vicinity of the conductive cloth 15 and detects a photoelectric pulse wave signal is disposed on the inner surface of the main body 11a (the surface that contacts the neck). ing.
  • the photoelectric pulse wave sensor 20 is a sensor that optically detects a photoelectric pulse wave signal using the light absorption characteristic of blood hemoglobin.
  • the light emitting element 201 emits light according to a pulsed drive signal output from a drive unit 350 of the signal processing unit 31 described later.
  • a drive unit 350 of the signal processing unit 31 for example, an LED, a VCSEL (Vertical Cavity Surface Emitting LASER), or a resonator type LED can be used.
  • the driving unit 350 generates and outputs a pulsed driving signal for driving the light emitting element 201.
  • the light receiving element 202 outputs a detection signal corresponding to the intensity of light irradiated from the light emitting element 201 and transmitted through the neck or reflected from the neck.
  • a photodiode or a phototransistor is preferably used as the light receiving element 202.
  • a photodiode is used as the light receiving element 202.
  • the light receiving element 202 is connected to the signal processing unit 31, and a detection signal (photoelectric pulse wave signal) obtained by the light receiving element 202 is output to the signal processing unit 31.
  • a battery (not shown) that supplies electric power to the photoelectric pulse wave sensor 20, the signal processing unit 31, the wireless communication module 60, and the like is housed in one sensing unit 11.
  • the other sensing unit 12 includes a signal processing unit 31 and a wireless communication module 60 that transmits biological information such as a measured electrocardiogram signal, photoelectric pulse wave signal, and pulse wave propagation time to an external device. (Corresponding to the wireless communication means described in the range).
  • Each of the conductive cloths 15 and 15 and the photoelectric pulse wave sensor 20 is connected to the signal processing unit 31, and the detected electrocardiogram signal and photoelectric pulse wave signal are input to the signal processing unit 31.
  • the signal processing unit 31 measures the pulse wave propagation time from the time difference between the R wave peak of the detected electrocardiogram signal (cardiac radio wave) and the peak of the first photoelectric pulse wave signal (pulse wave).
  • the signal processing unit 31 processes the input electrocardiogram signal and measures a heart rate, a heart beat interval, and the like. Further, the signal processing unit 31 processes the input photoelectric pulse wave signal to measure the pulse rate, the pulse interval, and the like.
  • the signal processing unit 31 includes amplification units 311 and 321, a first signal processing unit 310, a second signal processing unit 320, peak detection units 316 and 326, peak correction units 318 and 328, and a pulse wave propagation time measurement unit 330. is doing.
  • the first signal processing unit 310 includes an analog filter 312, an A / D converter 313, and a digital filter 314.
  • the second signal processing unit 320 includes an analog filter 322, an A / D converter 323, a digital filter 324, and a second-order differentiation processing unit 325.
  • the digital filter 314, 324, the second-order differentiation processing unit 325, the peak detection units 316, 326, the peak correction units 318, 328, and the pulse wave propagation time measurement unit 330 are CPUs that perform arithmetic processing.
  • a ROM for storing a program and data for causing the CPU to execute each process, a RAM for temporarily storing various data such as calculation results, and the like are included. That is, the functions of the above-described units are realized by executing the program stored in the ROM by the CPU.
  • the amplifying unit 311 is configured by an amplifier using, for example, an operational amplifier, and amplifies the electrocardiogram signals detected by the sensing units 11 and 12 (conductive cloths 15 and 15).
  • the electrocardiographic signal amplified by the amplifying unit 311 is output to the first signal processing unit 310.
  • the amplification unit 321 is configured by an amplifier using an operational amplifier, for example, and amplifies the photoelectric pulse wave signal detected by the photoelectric pulse wave sensor 20.
  • the photoelectric pulse wave signal amplified by the amplification unit 321 is output to the second signal processing unit 320.
  • the first signal processing unit 310 includes the analog filter 312, the A / D converter 313, and the digital filter 314, and performs filtering processing on the electrocardiogram signal amplified by the amplification unit 311. This extracts the pulsation component.
  • the second signal processing unit 320 includes the analog filter 322, the A / D converter 323, the digital filter 324, and the second-order differentiation processing unit 325, and the photoelectric pulse amplified by the amplification unit 321.
  • a pulsating component is extracted by applying filtering processing and second-order differentiation processing to the wave signal.
  • Analog filters 312, 322 and digital filters 314, 324 remove components (noise) other than the frequency characterizing the electrocardiogram signal and photoelectric pulse wave signal, and perform filtering to improve S / N. More specifically, a frequency component of 0.1 to 200 Hz is generally dominant for an electrocardiogram signal, and a frequency component of 0.1 to several tens of Hz is dominant for a photoelectric pulse wave signal.
  • the S / N is improved by performing filtering using the analog filters 312 and 322 and the digital filters 314 and 324 and selectively passing only signals in the frequency range.
  • the purpose is to extract only the pulsating component (that is, when it is not necessary to acquire a waveform or the like), a component other than the pulsating component by narrowing the pass frequency range to improve noise resistance. May be blocked.
  • the analog filters 312, 322 and the digital filters 314, 324 are not necessarily provided, and only one of the analog filters 312, 322 and the digital filters 314, 324 may be provided. Note that the electrocardiogram signal subjected to the filtering process by the analog filter 312 and the digital filter 314 is output to the peak detection unit 316. Similarly, the photoelectric pulse wave signal subjected to the filtering process by the analog filter 322 and the digital filter 324 is output to the second-order differentiation processing unit 325.
  • the second-order differentiation processing unit 325 obtains a second-order differential pulse wave (acceleration pulse wave) signal by second-order differentiation of the photoelectric pulse wave signal.
  • the acquired acceleration pulse wave signal is output to the peak detector 326.
  • the peak (rising point) of the photoelectric pulse wave is not clearly changed and may be difficult to detect. Therefore, it is preferable to detect the peak by converting it to an acceleration pulse wave.
  • a second-order differential processing unit 325 is provided. Is not essential and may be omitted.
  • the peak detection unit 316 detects the peak (R wave) of the electrocardiogram signal that has been subjected to signal processing by the first signal processing unit 310 (the pulsating component has been extracted).
  • the peak detection unit 326 detects the peak of the photoelectric pulse wave signal (acceleration pulse wave) subjected to the filtering process by the second signal processing unit 320.
  • Each of the peak detection unit 316 and the peak detection unit 326 performs peak detection within the normal range of the heartbeat interval and the pulse interval, and information on the peak time, peak amplitude, and the like for all detected peaks is stored in the RAM or the like. save.
  • the peak correction unit 318 obtains the delay time of the electrocardiogram signal in the first signal processing unit 310 (analog filter 312 and digital filter 314). The peak correction unit 318 corrects the peak of the electrocardiogram signal detected by the peak detection unit 316 based on the obtained delay time of the electrocardiogram signal. Similarly, the peak correction unit 328 obtains the delay time of the photoelectric pulse wave signal in the second signal processing unit 320 (analog filter 322, digital filter 324, second-order differentiation processing unit 325). The peak correction unit 328 corrects the peak of the photoelectric pulse wave signal (acceleration pulse wave signal) detected by the peak detection unit 326 based on the obtained delay time of the photoelectric pulse wave signal. The corrected peak of the electrocardiogram signal and the corrected peak of the photoelectric pulse wave signal (acceleration pulse wave) are output to the pulse wave propagation time measurement unit 330. Note that providing the peak correction unit 318 is not essential and may be omitted.
  • the pulse wave propagation time measurement unit 330 is configured to detect an interval (time difference) between the R wave peak of the electrocardiogram signal corrected by the peak correction unit 318 and the peak of the photoelectric pulse wave signal (acceleration pulse wave) corrected by the peak correction unit 328. ) To determine the pulse wave propagation time.
  • the pulse wave propagation time measurement unit 330 calculates, for example, a heart rate, a heartbeat interval, a heartbeat interval change rate, and the like from an electrocardiogram signal in addition to the pulse wave propagation time. Similarly, the pulse wave propagation time measurement unit 330 calculates a pulse rate, a pulse interval, a pulse interval change rate, and the like from the photoelectric pulse wave signal (acceleration pulse wave).
  • the acquired measurement data such as pulse wave propagation time, heart rate, and pulse rate is transmitted to, for example, a PC, a portable music player having a display, a smartphone, or the like via the wireless communication module 60.
  • the electrocardiogram signal and the photoelectric pulse wave signal are detected by using the electrocardiogram signal measuring apparatus 1 and the pulse wave propagation time is measured, as shown in FIG. And the sensing units 11 and 12 (the conductive cloths 15 and 15 and the photoelectric pulse wave sensor 20) are brought into contact with the neck.
  • an electrocardiogram signal between the two sensing units 11 and 12 is detected, and at the same time, a photoelectric pulse wave signal is detected by the photoelectric pulse wave sensor 20. Then, the pulse wave propagation time is acquired from the peak time difference between the electrocardiogram signal and the photoelectric pulse wave signal. Since the method for acquiring the pulse wave propagation time is as described above, detailed description thereof is omitted here.
  • the user can detect and measure an electrocardiogram signal, a photoelectric pulse wave signal, a pulse wave propagation time, and the like only by wearing the biological signal detection device 1 on the neck.
  • biological information such as the detected and measured electrocardiogram signal, photoelectric pulse wave signal, and pulse wave propagation time is transmitted to an external device by the wireless communication module 60.
  • the neckband 13 is formed in a substantially C shape, has elasticity, and biases the sensing units 11 and 12 in the direction of sandwiching the user's neck when worn. Further, since each of the pair of sensing units 11 and 12 is attached to the neckband 13 via the ball joint 16 so as to be swingable and rotatable, it is assumed that, for example, the thickness of the neck is different at the time of wearing. Also, the sensing units 11 and 12 can be brought into close contact with the user's neck. For example, the contact surface can be held following the movement of the neck such as tilting or twisting. As a result, the contact state between the conductive cloth 15 and the photoelectric pulse wave sensor 20 and the neck can be kept good regardless of individual differences such as the thickness of the neck and the movement of the neck.
  • the neckband 13 is extendable (that is, the length can be adjusted) in the longitudinal direction (that is, the circumferential direction of the neck), so regardless of the thickness of the neck, The contact state between the conductive cloth 15 and the photoelectric pulse wave sensor 20 and the neck can be kept better.
  • the photoelectric pulse wave sensor 20 is formed so as to protrude from the surfaces around the sensing units 11 and 12 in which the photoelectric pulse wave sensor 20 is disposed. Therefore, the adhesiveness between the photoelectric pulse wave sensor 20 and the neck can be further increased.
  • the conductive cloth 15 is used as an electrode for detecting an electrocardiogram signal, it is easy to fit the shape of the user's neck, and can be stably brought into contact with the neck. .
  • the conductive cloth 15 has excellent breathability and is not easily stuffy, it can make it difficult for the user to feel uncomfortable even if the conductive cloth 15 is worn for a long time.
  • the sensing portions 11 and 12 are recessed in the thickness direction of the conductive cloth 15 on each surface (the other three surfaces) excluding the surface in contact with the neck. Since the step 11c is provided, the conductive cloth 15 can be more stably brought into contact with the neck when the biological signal detection device 1 is mounted on the neck of the user, and the conductive cloth It becomes possible to prevent 15 from slipping out or coming off.
  • the battery and the wireless communication module 60 are built in the sensing units 11 and 12, there is no need to connect to other devices or power sources with cables, and the cables become an obstacle. There is nothing. Therefore, for example, it is possible to detect a biological signal by wearing for a long time including when the user is active.
  • FIG. 6 is a plan view of the sensing unit 21 constituting the biological signal detection device 2 according to the second embodiment.
  • the same or equivalent components as those in the first embodiment are denoted by the same reference numerals.
  • the biological signal detection device 2 is different from the biological signal detection device 1 according to the first embodiment described above in that it includes sensing units 21 and 22 instead of the sensing units 11 and 12.
  • Other configurations are the same as or similar to those of the biological signal detection apparatus 1 described above, and thus detailed description thereof is omitted here.
  • the configuration of the sensing unit 22 (not shown) is the same as or similar to that of the sensing unit 21, and here, the sensing unit 21 will be described as an example.
  • the sensing unit 21 is configured by a plurality of (two in this embodiment) parts, that is, a first part 21A and a second part 21B that are swingably connected to each other, and each part can be relatively displaced. It is configured.
  • first part 21A and the second part 21B are connected via a hinge portion 17 whose axis is the short direction of the neckband (when worn, the axial direction of the neck).
  • the hinge part 17 can be swung about the fulcrum.
  • the hinge portion 17 is provided with an elastic member such as a spring for biasing the second part 21B in the neck direction (inner side).
  • a photoelectric pulse wave sensor 20 is disposed in the first part 21A.
  • the photoelectric pulse wave sensor 20 and the arrangement structure thereof are the same as described above, and a detailed description thereof will be omitted here.
  • the conductive cloth 15 is attached to the second part 21B. Since the conductive cloth 15 and its mounting structure are as described above, detailed description thereof is omitted here.
  • the other configuration is the same as or similar to that of the sensing unit 11 (12) described above, and detailed description thereof is omitted here.
  • the biological signal detection device 2 can be used in the same manner as the biological signal detection device 1 described above. That is, the user can detect and measure an electrocardiogram signal, a photoelectric pulse wave signal, a pulse wave propagation time, and the like only by wearing the biological signal detection device 2 on the neck.
  • the usage method of the biosignal detection apparatus 1 is as above-mentioned, detailed description is abbreviate
  • the first part 21A and the second part 21B constituting the sensing unit 21 are configured to be swingably connected, and the parts 21A and 21B are configured to be relatively displaceable. Therefore, according to the thickness and shape of the neck, each of the first part 21A and the second part 21B can be brought into contact with the neck in a wider area.
  • the biological signal detection devices 1 and 2 include the photoelectric pulse wave sensor 20, but may be configured not to include the photoelectric pulse wave sensor 20.
  • the pair of sensing units 11 and 12 are attached to both ends of the neckband 13, but the sensing units 11 and 12 are not necessarily attached to both ends of the neckband 13.
  • the shape of the sensing parts 11 and 12 was made into the light curved arc shape, it is good also as a dogleg (L shape) shape or a planar shape.
  • the conductive cloth 15 has a cylindrical shape, a planar shape may be fixed to the casing.
  • the wireless communication module 60 transmits biological information (measurement data) such as an electrocardiogram signal, a photoelectric pulse wave signal, and a pulse wave propagation time detected and measured to an external device.
  • biological information such as an electrocardiogram signal, a photoelectric pulse wave signal, and a pulse wave propagation time detected and measured to an external device.
  • the acquired biological information may be stored in a memory in the apparatus, and the data may be transferred by connecting to an external device after the measurement is completed.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

Ce dispositif de détection de biosignal (1) est pourvu d'une bande entourant le cou (13) qui peut être portée autour de la circonférence du cou d'un utilisateur, et une paire d'unités de détection (11, 12), chacune étant attachée à la bande entourant le cou (13) et prévue avec un tissu électriquement conducteur (15) qui détecte des signaux électrocardiaques. La bande entourant le cou (13) est substantiellement en forme de C, présente une élasticité, et, lorsqu'elle est portée, pousse les unités de détection (11, 12) dans des directions de façon à maintenir le cou de l'utilisateur depuis les deux côtés. Les unités de détection (11,12) formant une paire sont fixées aux extrémités respectives de la bande entourant le cou (13) par l'intermédiaire d'articulations à rotule (16) d'une manière rotative et oscillante.
PCT/JP2016/062222 2015-05-07 2016-04-18 Dispositif de détection de biosignal WO2016178363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015095257 2015-05-07
JP2015-095257 2015-05-07

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WO2016178363A1 true WO2016178363A1 (fr) 2016-11-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021181735A1 (fr) * 2020-03-09 2021-09-16 株式会社村田製作所 Capteur bioacoustique et stéthoscope équipé de celui-ci

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004242851A (ja) * 2003-02-13 2004-09-02 Fukuda Denshi Co Ltd 脈波測定用電極及び脈波測定装置
JP2007202939A (ja) * 2006-02-06 2007-08-16 Masafumi Matsumura 生体情報検出装置
JP4278709B2 (ja) * 2006-12-25 2009-06-17 学校法人 大阪電気通信大学 電極装置、心電図測定装置
JP3163162U (ja) * 2009-07-21 2010-09-30 バイオ スペース・カンパニー・リミテッドＢｉｏｓｐａｃｅ Ｃｏ．，Ｌｔｄ． 電極装置
JP2014176748A (ja) * 2009-06-29 2014-09-25 Sony Corp 生体信号測定用装具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004242851A (ja) * 2003-02-13 2004-09-02 Fukuda Denshi Co Ltd 脈波測定用電極及び脈波測定装置
JP2007202939A (ja) * 2006-02-06 2007-08-16 Masafumi Matsumura 生体情報検出装置
JP4278709B2 (ja) * 2006-12-25 2009-06-17 学校法人 大阪電気通信大学 電極装置、心電図測定装置
JP2014176748A (ja) * 2009-06-29 2014-09-25 Sony Corp 生体信号測定用装具
JP3163162U (ja) * 2009-07-21 2010-09-30 バイオ スペース・カンパニー・リミテッドＢｉｏｓｐａｃｅ Ｃｏ．，Ｌｔｄ． 電極装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021181735A1 (fr) * 2020-03-09 2021-09-16 株式会社村田製作所 Capteur bioacoustique et stéthoscope équipé de celui-ci

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