WO2015046055A1 - Biological-information detection device and seat equipped with biological-information detection device - Google Patents

Biological-information detection device and seat equipped with biological-information detection device Download PDF

Info

Publication number
WO2015046055A1
WO2015046055A1 PCT/JP2014/074846 JP2014074846W WO2015046055A1 WO 2015046055 A1 WO2015046055 A1 WO 2015046055A1 JP 2014074846 W JP2014074846 W JP 2014074846W WO 2015046055 A1 WO2015046055 A1 WO 2015046055A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection
biological information
human body
electrode
detection device
Prior art date
Application number
PCT/JP2014/074846
Other languages
French (fr)
Japanese (ja)
Inventor
厚志 後藤
大滝　幸夫
吉村　隆
敏行 星
秀晴 大竹
Original Assignee
アルプス電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Publication of WO2015046055A1 publication Critical patent/WO2015046055A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
    • 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
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02444—Details of sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6893—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon

Definitions

  • the present invention relates to a biological information detection device and a seat including the biological information detection device.
  • a biological information detection apparatus that is disposed in a vehicle seat and detects biological information of a vehicle driver (human body) has been put into practical use.
  • a biological information detection device is used when detecting biological information such as a driver's heartbeat interval and determining the driver's arousal level based on the detected data.
  • FIG. 10 is an explanatory diagram showing a configuration of the heartbeat detection device 200 according to Patent Document 1.
  • FIG. 10A is an explanatory diagram illustrating an example of use of the heartbeat detection device 200
  • FIG. 10B is an explanatory diagram illustrating a configuration of the heartbeat detection device 200.
  • the heartbeat detection device 200 is a device that detects the heartbeat of an occupant 211 (human body) who gets on the vehicle and sits on the seat 212.
  • the heartbeat detection device 200 includes a sensor unit 201 and a calculation unit 202.
  • the calculation unit 202 includes a heartbeat cycle signal calculation unit 203, an R wave existence section setting unit 204, a heartbeat peak signal calculation unit 205, an R wave calculation unit 206, and an RRI calculation unit 207.
  • the sensor unit 201 is a detection device of a type called a Doppler sensor, and detects the movement of the body surface of the occupant 211 using a transmission signal transmitted to the occupant 211 and a reflection signal thereof.
  • the heartbeat cycle signal calculation unit 203 calculates a sinusoidal heartbeat cycle signal indicating the periodicity of the heartbeat of the occupant 211 from the heartbeat source signal.
  • the R wave existence section setting unit 204 sets an R wave existence section based on the heartbeat cycle signal.
  • the heartbeat peak signal calculation unit 205 calculates a heartbeat peak signal in which the heartbeat peak signal is emphasized from the heartbeat source signal that is the output of the sensor unit 201.
  • the R wave calculation unit 206 calculates a peak wave as an R wave based on amplitude information from the heartbeat peak signal.
  • the RRI calculation unit 207 calculates a time interval (RRI: RR Interval) between two R waves that are adjacent in time, and determines whether the calculated time interval is an abnormal value.
  • the heartbeat detection device 200 detects a biometric information test relating to the heartbeat of the occupant 211 seated on the seat 212.
  • the heart rate detection device 200 detects biological information at a specific part of the back of the vehicle seat 212 using only the Doppler sensor, there is a change in the posture of the occupant 211, a change in the environment, and the like. In such a case, there is a problem that detection of biological information is likely to be missed, and detection of biological information cannot be reliably performed.
  • the present invention has been made in view of such a state of the art, and an object of the present invention is to provide a biological information detection apparatus capable of more reliably detecting biological information.
  • the biological information detection device is a biological information detection device that detects biological information of a human body, and includes a detection surface that is arranged so that the human body is positioned forwardly. Detecting biological information of the human body using capacitive coupling between a plurality of detection electrodes arranged behind the detection surface along the detection surface and the human body adjacent to the detection electrode First detection means for detecting a living body information of the human body using the transmission signal and the reflected signal, and a radiation unit that radiates a transmission signal toward the human body and receives the reflected signal. And the radiating portion is arranged at a position that does not overlap the detection electrode when viewed from the front.
  • biometric information is detected using the first detection means and the second detection means having different detection methods. Since the first detection means and the second detection means have different environments suitable for detection, it is easy to prevent detection of biological information from being missed even when there is a change in the posture of the human body or a change in the surrounding environment.
  • the radiating portion is arranged at a position that does not overlap the detection electrode when viewed from the front, the transmission signal radiated from the radiating portion becomes a noise component and affects the capacitive coupling between the detection electrode and the human body. The influence can be reduced. In addition, it is possible to reduce the influence of the detection electrode blocking the transmission signal radiated from the radiating unit and the reflected signal. Thus, in the biological information detection device, interference between the first detection means and the second detection means can be suppressed. As a result, biometric information can be detected more reliably.
  • the detection electrode when viewed from the front, is disposed so as to be positioned in a peripheral portion of the detection surface, and the radiating portion is positioned in a central portion of the detection surface. It is arranged so that it may be arranged.
  • the radiating portion is disposed so as to be positioned at the center of the detection surface when viewed from the front. Therefore, even if the position of the human body is somewhat shifted, the transmission signal can be reliably transmitted to the human body.
  • the detection electrode is arrange
  • the biological information detection apparatus wherein the radiation unit is arranged so as not to protrude forward from the detection electrode.
  • the radiating portion is disposed so as not to protrude forward from the detection electrode. Therefore, even if the human body is close to the detection electrode, the human body does not contact the radiation portion. Therefore, it is possible to prevent discomfort caused by the human body coming into contact with the radiating portion. Further, since the radiating portion does not protrude forward from the detection electrode, the distance between the detection electrode and the human body can be reduced. Therefore, it is possible to prevent a decrease in detection accuracy due to a distance between the detection electrode and the human body.
  • the seat according to claim 4 is a seat on which the human body is seated, and has a backrest part that supports the back of the human body from behind, and the backrest part is provided with any one of claims 1 to 3.
  • the living body information detection device is provided, and the backrest surface of the backrest portion is a detection surface of the living body information detection device according to any one of claims 1 to 3.
  • the seat having this configuration has a backrest portion on which a biological information detection device is disposed. Therefore, in the seat with this configuration, it is possible to detect biological information through the back of the seated human body. Since the back is close to the heart, it is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and heartbeat motion of a human body seated on the seat.
  • the biological information detection device is a biological information detection device that detects biological information of a human body, the detection surface being arranged so that the human body is positioned above, and the detection surface along the detection surface.
  • a plurality of detection electrodes disposed below a detection surface; and first detection means for detecting biological information of the human body using capacitive coupling between the detection electrodes and the human body adjacent to the detection electrodes;
  • a pressure-sensitive sheet for detecting pressure from the human body, and second detection means for detecting biological information of the human body using the pressure detected by the pressure-sensitive sheet, wherein the pressure-sensitive sheet includes the detection electrode. It is arranged on the lower side.
  • biometric information is detected using the first detection means and the second detection means having different detection methods. Since the first detection means and the second detection means have different environments suitable for detection, it is easy to prevent detection of biological information from being missed even when there is a change in the posture of the human body or a change in the environment. In addition, since the pressure-sensitive sheet is not interposed between the detection electrode and the human body, it is possible to prevent the pressure-sensitive sheet from affecting the capacitive coupling between the detection electrode and the human body. Further, by making the detection electrode thin, it is possible to easily transmit the pressure from the human body to the pressure-sensitive sheet, and it is possible to prevent the detection electrode from affecting the piezoelectric detection. Thus, in the biological information detection device, the first detection unit and the second detection unit can be prevented from interfering with each other. As a result, biometric information can be detected more reliably.
  • the biological information detection apparatus wherein the detection surface has two side end portions facing each other, and the pressure-sensitive sheet has a plurality of pressure-sensitive elements extending over the two side end portions. It is characterized by having.
  • the pressure-sensitive sheet has a plurality of pressure-sensitive elements extending over two side ends of the detection surface. Therefore, even if the position of the human body is slightly deviated, it is easy to prevent pressure detection omission. As a result, biometric information can be detected more reliably.
  • the seat according to claim 7 is a seat on which the human body is seated, and has a seat portion that supports a lower part of the human body from below, and the living body according to claim 5 or 6 is provided in the seat portion.
  • An information detection device is provided, and a seating surface of the seating portion is a detection surface of the biological information detection device according to claim 5 or 6.
  • the seat having this configuration has a seating portion in which a biological information detection device is disposed. Therefore, in the seat with this configuration, it is possible to detect biological information through the seated portion of the seated human body.
  • the seat is always pressed against the seating surface while seated, so that the proximity between the detection electrode and the seat is easily stabilized, and the pressure from the seat is easily transmitted to the pressure sensitive sheet. Therefore, such a seat is suitable for detecting biological information related to heartbeat activity, such as electrocardiograms and pressure fluctuations in the vicinity of the seat of the seated human body.
  • the seat according to claim 8 is a seat on which the human body is seated, and includes a backrest portion that supports the back of the human body from behind, and a seating portion that supports the waist portion of the human body from below, and the backrest.
  • the living body information detection device according to any one of claims 1 to 3 is disposed in a portion, and the backrest surface of the backrest portion is the living body information detection device according to any one of claims 1 to 3.
  • the living body information detection device according to claim 5 or 6 is arranged in the seating part, and the seating surface of the seating part is the living body information detection according to claim 5 or 6. It is a detection surface of the apparatus.
  • the seat having this configuration has a backrest portion and a seating portion in which a biological information detection device is disposed. For this reason, in the seat with this configuration, it is possible to detect biological information through the back of the human body seated and the waist. And detection of biometric information can be performed more reliably by detecting biometric information through a plurality of parts, such as the back and the elbow of the human body.
  • FIG. 1 It is explanatory drawing which shows typically the side cross-section of the pressure sensitive element 122 shown in FIG. It is explanatory drawing which shows arrangement
  • FIG. 1 It is explanatory drawing which shows typically the side cross-section of the pressure sensitive element 122 shown in FIG. It is explanatory drawing which shows arrangement
  • FIG. 1 is an explanatory diagram showing a usage example of the biological information detection apparatus 1 according to the first embodiment of the present invention.
  • FIG. 2 is an explanatory diagram showing the arrangement of the biological information detection device 1 shown in FIG. 2A is a view of the seat 70 as viewed from the front
  • FIG. 2B is a view of the seat 70 and the driver 60 as viewed from the side.
  • FIG. 3 is an explanatory diagram showing a configuration of the biological information detection apparatus 1 shown in FIG.
  • FIG. 3 is an exploded perspective view of the biological information detection apparatus 1.
  • FIG. 4 is an explanatory diagram showing the arrangement of the detection electrodes 12 and the radiation portions 22 shown in FIG. 4A is a view of the detection electrode 12 and the radiating portion 22 as viewed from above
  • FIG. 4B is a view of the detection electrode 12 and the radiating portion 22 as viewed from the front.
  • the biological information detection apparatus 1 is used by being disposed in a vehicle seat 70 to detect biological information of a vehicle driver 60 (human body).
  • the seat 70 has a backrest portion 71 that supports the back 61 of the driver 60 from behind. Of the front surface of the backrest portion 71, a substantially rectangular portion with which the back 61 of the driver 60 contacts is a backrest surface 72.
  • the seat 70 also has a seating portion 73 that supports the driver's 60 seat 62 from below. Of the upper surface of the seating portion 73, a substantially rectangular portion with which the driver's 60 dent portion 62 contacts is a seating surface 74.
  • the driver 60 is seated on the seat 70 such that the back 61 is located in front of the backrest surface 72 and the elbow 62 is located above the seating surface 74.
  • the biological information detection device 1 is disposed on the backrest portion 71 of the seat 70, and the backrest surface 72 of the seat 70 is the detection surface 2 of the biological information detection device 1.
  • the biological information detection apparatus 1 includes first detection means 10 and second detection means 20 as shown in FIG.
  • the first detection means 10 and the second detection means 20 are disposed inside the backrest portion 71.
  • the 1st detection means 10 and the 2nd detection means 20 are connected to the control apparatus 30 arrange
  • the first detection means 10 is a capacitive coupling type detection device. As shown in FIG. 3, the first detection means 10 includes a detection sheet 11, six detection electrodes 12 formed on the front side of the detection sheet 11, and a ground electrode 13 formed on the back side of the detection sheet 11. ,have.
  • the detection sheet 11 is a film made of an insulator such as cloth. The detection sheet 11 is disposed behind the detection surface 2 along the detection surface 2.
  • the detection electrode 12 is a substantially rectangular electrode.
  • the surface of the detection electrode 12 is covered with an insulating protective film (not shown).
  • the three detection electrodes 12 are arranged side by side so as to be positioned at the left end portion (peripheral portion) of the detection surface 2 when viewed from the front, and the other three detection electrodes 12 When viewed from above, they are arranged side by side so as to be located at the right end (peripheral part) of the detection surface 2.
  • the driver 60 is seated, the back 61 of the driver 60 comes close to the detection electrode 12.
  • the detection electrode 12 and the back 61 are capacitively coupled. And the detection electrode 12 respond
  • the ground electrode 13 is formed at positions corresponding to the upper end, lower end, left end, right end (peripheral portion) of the detection surface 2 when viewed from the front.
  • the ground electrode 13 is not formed at a position corresponding to the central portion of the detection surface 2.
  • the ground electrode 13 is grounded via a wiring or the like (not shown), and the capacitive coupling between the detection electrode 12 and the back 61 is stabilized.
  • the ground electrode 13 may be omitted.
  • the detection sheet 11 may be provided with a feedback electrode that feeds back an electric signal for noise removal to the back 61 of the driver 60.
  • the second detection means 20 is a detection device called a Doppler sensor. As shown in FIG. 3, the second detection unit 20 includes two main body parts 21 each including a transmission / reception circuit, a radiation part 22 formed on the front side of the main body part 21, and two main body parts 21. And a fixed frame 24 to which the mounting plate 23 is fixed.
  • the radiating unit 22 is an antenna for transmitting and receiving a high-frequency electromagnetic wave signal.
  • the radiating portion 22 is obtained, for example, by forming a predetermined electrode pattern on the other plate surface of the wiring board on which the transmission / reception circuit is formed on one plate surface.
  • the radiating unit 22 is connected to a transmission / reception circuit built in the main body unit 21 through a wiring or the like (not shown).
  • the radiation unit 22 radiates the high-frequency transmission signal generated by the main body unit 21 as an electromagnetic wave signal to the back 61 of the driver 60 and receives a reflection signal from the back 61 of the driver 60 of the transmission signal.
  • the reflected signal received by the radiating unit 22 is mixed with the transmission signal by the main body unit 21.
  • the main-body part 21 is outputting the detection signal based on the mixed signal of a transmission signal and a reflected signal.
  • the detection signal is an electrical signal including operation information related to the movement of the back 61 (hereinafter, abbreviated as a heartbeat operation) associated with a biological activity such as a heartbeat of the driver 60.
  • the electrical signal output from the main body 21 is transmitted to the control device 30.
  • the mounting plate 23 is a plate-like member made of metal such as aluminum.
  • the radiating portion 22 is attached to the front side of the mounting plate 23 by a method such as adhesion.
  • the fixed frame 24 is a frame-shaped member made of metal such as aluminum.
  • the attachment plate 23 is fixed to the fixed frame 24 by a method such as screwing, and the fixed frame 24 is fixed inside the backrest portion 71 of the seat 70.
  • emission part 22 is arrange
  • the radiating portion 22 is positioned so as not to overlap the detection electrode 12 and the ground electrode 13 when viewed from the front. Further, the radiating portion 22 is arranged so as not to protrude in front of the detection electrode 12.
  • the control device 30 controls the first detection means 10 and the second detection means 20. In addition, the control device 30 operates based on the electrical signals transmitted from the six detection electrodes 12 of the first detection means 10 and the electrical signals transmitted from the two main body portions 21 of the second detection means 20. Biological information relating to the heartbeat and the like of the person 60 is calculated.
  • the biological information is detected by using the first detection means 10 and the second detection means 20 having different detection methods as described above. Since the detection principle of biological information using a capacitive coupling type detection device is known, detailed description thereof is omitted. In addition, since the detection principle of biological information using a Doppler sensor type detection device is also known, detailed description is omitted.
  • the control device 30 calculates biological information based on the electrical signal related to the electrocardiogram transmitted from the first detection means 10 and the electrical signal related to the heartbeat motion transmitted from the second detection means 20. The possibility of detection failure of biological information can be reduced.
  • the biological information is calculated based on the electrical signal transmitted from one detection electrode 12.
  • the accuracy of detection can be improved by calculating the biological information based on the difference between the electrical signals transmitted from the plurality of detection electrodes 12. Therefore, it is desirable that the number of detection electrodes 12 is plural.
  • the biological information of the driver 60 is detected using the first detection means 10 and the second detection means 20 that are different in detection method.
  • the first detection unit 10 and the second detection unit 20 have different environments suitable for detection. Therefore, even if there is a change in the posture of the driver 60, a change in the surrounding environment, or the like, It is easy to prevent detection leakage.
  • the radiation part 22 is arranged at a position that does not overlap the detection electrode 12 and the ground electrode 13 when viewed from the front, the transmission signal radiated from the radiation part 22 is arranged by the detection electrode 12 and the ground electrode 13. The driver 60 can be reached through an area that is not.
  • the biological information detection apparatus 1 can reduce the influence of the transmission signal radiated from the radiating unit 22 on the capacitive coupling between the detection electrode 12 and the human body as a noise component. Moreover, the influence by the detection electrode 12 blocking the transmission signal radiated
  • the radiating unit 22 is disposed so as to be located at the center of the detection surface when viewed from the front. Therefore, even if the position of the back 61 of the driver 60 is slightly shifted, the transmission signal can be reliably transmitted to the back 61 of the driver 60.
  • the detection electrode 12 is arrange
  • the radiating unit 22 is disposed so as not to protrude forward from the detection electrode 12. Therefore, even if the back 61 of the driver 60 is close to the detection electrode 12, the back 61 of the driver 60 does not contact the radiation unit 22. Therefore, discomfort caused by the driver's 60 back 61 coming into contact with the radiation portion 22 can be prevented. Moreover, since the radiation part 22 does not protrude forward from the detection electrode 12, the distance between the detection electrode 12 and the back 61 of the driver 60 can be reduced. Therefore, it is possible to prevent a decrease in detection accuracy due to the distance between the detection electrode 12 and the back 61 of the driver 60 being increased.
  • the seat 70 of the present embodiment has a backrest portion 71 that supports the back 61 of the driver 60 from behind, and the biological information detection device 1 is disposed in the backrest portion 71.
  • the backrest surface 72 of the backrest 71 is the detection surface 2 of the biological information detection device 1. Therefore, in the seat 70 having this configuration, the biological information of the driver 60 can be detected through the back 61 of the driver 60 who is seated.
  • the back 61 is close to the heart, it is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and heartbeat motion of the driver 60 seated on the seat 70.
  • FIG. 5 is an explanatory diagram showing a usage example of the biological information detection apparatus 101 according to the second embodiment of the present invention.
  • FIG. 6 is an explanatory diagram showing the arrangement of the biological information detection apparatus 101 shown in FIG.
  • FIG. 6A is a view of the seat 70 viewed from above
  • FIG. 6B is a view of the seat 70 and the driver 60 viewed from the side.
  • FIG. 7 is an explanatory diagram showing the configuration of the biological information detection apparatus 101 shown in FIG.
  • FIG. 7 is an exploded perspective view of the biological information detection apparatus 101.
  • FIG. 8 is an explanatory view schematically showing a side sectional structure of the pressure sensitive element 122 shown in FIG.
  • the biological information detection apparatus 101 is disposed and used in a vehicle seat 70 to detect biological information of a driver 60 (human body) of the vehicle.
  • the seating surface 74 is the detection surface 102 of the biological information detection device 101.
  • the biological information detection apparatus 101 includes first detection means 110 and second detection means 120 as shown in FIG.
  • the first detection unit 110 and the second detection unit 120 are disposed inside the seating portion 73.
  • the 1st detection means 110 and the 2nd detection means 120 are connected to the control apparatus 30 arrange
  • the first detection means 110 is a capacitive coupling type detection device. As shown in FIG. 7, the first detection unit 110 includes a detection sheet 111, two detection electrodes 112 formed on the upper surface side of the detection sheet 111, and a ground electrode 113 formed on the lower surface side of the detection sheet 111. ,have.
  • the detection sheet 111 is disposed below the detection surface 102 along the detection surface 102.
  • the detection electrode 112 is a substantially rectangular electrode.
  • the surface of the detection electrode 112 is covered with an insulating protective film (not shown).
  • the two detection electrodes 112 are arranged side by side so as to be positioned on the rear side of the detection surface 102 when viewed from above.
  • the driver 60 is seated, the driver's 60 seat 62 is brought close to the detection electrode 112.
  • the detection electrode 112 and the waist portion 62 are capacitively coupled. Then, the sensing electrode 112 uses a capacitive coupling between the sensing electrode 112 and the waist portion 62 to change the surface potential of the waist portion 62 due to a biological activity such as a heartbeat of the driver 60 (hereinafter abbreviated as electrocardiogram). ) Is detected. The electrical signal detected by the detection electrode 112 is transmitted to the control device 30.
  • the ground electrode 113 is formed at a position corresponding to the entire surface of the detection surface 102 when viewed from above.
  • the ground electrode 113 is grounded via an unillustrated wiring or the like, and stabilizes the capacitive coupling between the detection electrode 112 and the rod portion 62.
  • the ground electrode 113 may not be provided.
  • the detection sheet 111 may be provided with a feedback electrode or the like that feeds back an electric signal for noise removal to the bellows 62.
  • the second detection means 120 is a piezoelectric detection device. As shown in FIG. 7, the second detection unit 120 is arranged on the pressure-sensitive sheet 121, the four pressure-sensitive elements 122 arranged on the upper surface side of the pressure-sensitive sheet 121, and the lower surface side of the pressure-sensitive sheet 121. And a cushion 127.
  • the pressure sensitive sheet 121 is a film made of an insulator such as cloth.
  • the pressure-sensitive element 122 is an element having an elongated rectangular shape when viewed from above, and extends from the left end portion of the seating surface 74 to the right end portion.
  • the four pressure sensitive elements 122 are arranged on the upper surface of the pressure sensitive sheet 121 so as to be arranged at substantially equal intervals in the front-rear direction. As shown in FIG. 8, the pressure sensitive element 122 is formed on the insulating film 123 disposed on the upper surface side of the pressure sensitive sheet 121, the first electrode layer 124 formed on the insulating film 123, and the first electrode layer 124.
  • the piezoelectric layer 125 and the second electrode layer 126 formed thereon are configured.
  • a resin in which fine particles of piezoelectric ceramic such as barium titanate are kneaded is used as a material used for the piezoelectric layer 125.
  • the surface of the pressure sensitive element 122 is covered with an insulating protective film (not shown).
  • the pressure sensitive element 122 has a piezoelectric effect.
  • the pressure-sensitive element 122 uses the piezoelectric effect to make an electrical signal corresponding to a minute change in pressure from the waist portion 62 (hereinafter, abbreviated as pressure fluctuation) due to a biological activity such as a heartbeat of the driver 60. Is generated.
  • the electrical signal generated by the pressure sensitive element 122 is transmitted to the control device 30.
  • the cushion 127 is a plate-like member made of a resin having elasticity such as urethane.
  • the cushion 127 is held inside the seating portion 73 and supports the detection sheet 111 and the pressure sensitive sheet 121 from below.
  • the control device 30 controls the first detection means 110 and the second detection means 120. Further, the control device 30 is based on the electrical signals transmitted from the two detection electrodes 112 of the first detection means 110 and the electrical signals transmitted from the four pressure sensitive elements 122 of the second detection means 120. Biological information related to the heartbeat and the like of the driver 60 is calculated.
  • the biological information detection apparatus 101 detects biological information using the first detection means 110 and the second detection means 120 having different detection methods. Since the detection principle of biological information using a capacitive coupling type detection device is known, detailed description thereof is omitted. Further, since the detection principle of biological information using a piezoelectric detection device is also known, detailed description thereof is omitted.
  • the first detection means 110 needs to bring the driver's 60 belly part 62 close to the detection electrode 112, if the staring part 62 is close to the detection electrode 112, the driver 60 moves the body somewhat. Has the advantage of being able to detect stably.
  • the second detection means 120 is likely to become unstable when the driver 60 moves his body. However, if the pressure from the waist portion 62 is transmitted to the pressure sensitive element 122, the second portion 120 62 has the advantage that it can be detected even if it is not close to the pressure sensitive element 122.
  • the control device 30 calculates the biological information based on the electrical signal transmitted from the first detection unit 110 and the electrical signal transmitted from the second detection unit 120, thereby detecting the detection of biological information. The possibility of this can be reduced.
  • the biometric information of the driver 60 is detected using the first detection unit 110 and the second detection unit 120 having different detection methods.
  • the environment suitable for detection differs between the first detection unit 110 and the second detection unit 120, even if there is a change in the posture of the driver 60, a change in the environment, or the like, detection of biological information is not performed. It is easy to prevent.
  • the pressure sensitive sheet 121 is not interposed between the detection electrode 112 and the driver's 60 belly part 62, the pressure sensitive sheet 121 affects the capacitive coupling between the detection electrode 112 and the belly part 62. Can be prevented.
  • the biological information detection apparatus 101 can prevent the first detection unit 110 and the second detection unit 120 from interfering with each other. As a result, the biological information detection apparatus 101 can more reliably detect biological information.
  • the pressure sensitive sheet 121 has four pressure sensitive elements 122 extending over two side end portions of the seating surface 74. Therefore, even if the position of the waist portion 62 of the driver 60 is slightly deviated, it is easy to prevent the detection of pressure from being detected. As a result, the biological information detection apparatus 101 can more reliably detect biological information.
  • the seat 70 has a seating portion 73 that supports the den 62 of the driver 60 from below, and the living body information detection device 101 is disposed in the seating portion 73.
  • the seating surface 74 of the seating portion 73 is the detection surface 102 of the biological information detection device 101. Therefore, in the seat 70 having this configuration, the biological information of the driver 60 can be detected through the seat 62 of the driver 60 who is seated.
  • the seat 62 is always pressed against the seating surface 74 while seated, so that the proximity of the detection electrode 112 and the seat 62 can be stabilized, and the pressure from the seat 62 is applied to the pressure sensitive sheet 121. Easy to tell. Therefore, such a seat 70 is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and pressure fluctuation in the vicinity of the seat 62 of the driver 60 who is seated.
  • FIG. 9 is an explanatory diagram showing the arrangement of the biological information detection device 1 and the biological information detection device 101 according to the third embodiment of the present invention.
  • FIG. 9A is a view of the seat 70 viewed from the front
  • FIG. 9B is a view of the seat 70 and the driver 60 viewed from the side.
  • the biological information detection device 1 and the biological information detection device 101 are disposed in a seat 70.
  • the biological information detection apparatus 1 is the same as that described in the first embodiment.
  • the biological information detection apparatus 101 is the same as that described in the second embodiment.
  • the 1st detection means 10 and the 2nd detection means 20 of the biometric information detection apparatus 1 are connected to the control apparatus 30 via the wiring which is not shown in figure.
  • Both the first detection means 110 and the second detection means 120 of the biological information detection apparatus 101 are connected to the control apparatus 30 via wiring (not shown).
  • the first detection means 10 and the second detection means 20 of the biological information detection apparatus 1 and the first detection means 110 and the second detection means 120 of the biological information detection apparatus 101 are provided at the same time. ing.
  • the seat 70 of the present embodiment has a backrest portion 71 that supports the driver's 60 back 61 from behind, and the biological information detection device 1 is disposed on the backrest portion 71. Further, the seat 70 has a seating portion 73 that supports the driver's 60 seat 62 from below, and the living body information detecting device 101 is disposed in the seating portion 73. Therefore, in the seat 70 having this configuration, it is possible to detect the biological information of the human body through the back 61 and the elbow 62 of the driver 60 who is seated. And by detecting biometric information through a plurality of parts of driver 60, biometric information can be detected more reliably.
  • the detection of the biological information can be continued if the den 62 is close to the seat 73.
  • the detection of the biological information can be continued if the back 61 is close to the backrest 71.
  • the biological information detection device 1 Even if the detection result of the biological information detection device 1 shows an abnormal value due to the influence of noise generated in the vicinity of the backrest 71, if the biological information detection device 101 is operating normally, the biological information detection device Detection failure can be prevented using the detection result 101. On the contrary, even if the detection result of the biological information detection device 101 shows an abnormal value due to the influence of noise generated near the seating portion 73, if the biological information detection device 1 is operating normally, the biological information detection device 1 Detection failure can be prevented using the detection result.
  • the orientation of the detection surface 2 of the biological information detection apparatus 1 may be changed as appropriate according to the usage status of the apparatus.
  • the detection surface 2 may face the up-down direction or the diagonal direction instead of the front-rear direction.
  • the detection surface 2 of the biological information detection apparatus 1 may be a surface other than the backrest surface 72 of the seat 70.
  • the biological information detection apparatus 1 does not set only the back 61 of the driver 60 as a detection target, but may set the shoulder or waist of the driver 60 as a detection target.
  • the number of detection electrodes 12 of the first detection means 10 is not limited to six. If sufficient detection accuracy is obtained, the number of detection electrodes 12 may be two. If the detection accuracy is to be further improved, the number of detection electrodes 12 may be further increased. Further, the detection electrode 12 may be disposed so as to be located at the upper end portion or the lower end portion of the detection surface 2 when viewed from the front.
  • the number of the radiating portions 22 of the second detection means 20 is not limited to two. As long as sufficient detection accuracy is obtained, the number of the radiation parts 22 may be one. Further, when it is desired to further improve the detection accuracy, the number of the radiation portions 22 may be further increased.
  • the main body 21 and the radiating part 22 of the second detection means 20 may be arranged separately.
  • the radiating portion 22 may be an electrode pattern formed together with the detection electrode 12 on the front surface of the detection sheet 11.
  • the main-body part 21 may be arrange
  • the mounting plate 23 and the fixing frame 24 may be omitted.
  • the second detection means 20 does not detect the biological information of the driver 60 using a high-frequency electromagnetic wave signal, but uses the ultrasonic signal to detect the biological information of the driver 60. May be detected.
  • the radiating unit 22 is a device that combines a speaker that radiates an ultrasonic transmission signal and a microphone that receives a reflected signal from the driver 60 of the transmission signal.
  • the orientation of the detection surface 102 of the biological information detection apparatus 101 may be changed as appropriate according to the use status of the apparatus.
  • the detection surface 102 of the biological information detection apparatus 101 may be a surface other than the seating surface 74 of the seat 70.
  • the biological information detection apparatus 101 may be used by being disposed other than the seat 70 of the vehicle.
  • the biological information detection apparatus 101 does not set only the waist part 62 of the driver 60 as a detection target, but may set the thigh of the driver 60 as a detection target.
  • the number of detection electrodes 112 of the first detection means 110 is not limited to two. If it is desired to further improve the detection accuracy, the number of detection electrodes 112 may be further increased.
  • the number of pressure sensitive elements 122 of the second detection means 120 is not limited to four.
  • the number of pressure sensitive elements 122 may be three or less as long as sufficient detection accuracy is obtained. Further, when it is desired to further improve the detection accuracy, the number of pressure sensitive elements 122 may be further increased. Further, the pressure sensitive element 122 may extend from the front end portion of the detection surface 102 to the rear end portion.
  • the pressure sensing element 122 of the second detection means 120 is other than that shown in FIG.
  • An element having the structure may be used.
  • the pressure-sensitive element 122 may be an element such as a strain gauge that is distorted corresponding to the pressure from the rod 62 and the resistance value changes corresponding to the distortion.
  • the air pressure of the second detecting means 120 is changed according to the pressure from the pressure part 62, and the pressure sensing element 122 is an element such as a pressure sensor for detecting the pressure of the air bag. It doesn't matter.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Cardiology (AREA)
  • Social Psychology (AREA)
  • Hospice & Palliative Care (AREA)
  • Educational Technology (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Psychology (AREA)
  • Psychiatry (AREA)
  • Child & Adolescent Psychology (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Developmental Disabilities (AREA)
  • Physiology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Seats For Vehicles (AREA)

Abstract

A biological-information detection device (1) equipped with a detection surface provided in a manner such that a person is positioned to the front thereof, a plurality of detection electrodes (12) positioned along the detection surface to the rear thereof, a first detection means (10) for detecting the biological information of the person by using capacitive coupling between the detection electrodes (12) and the person near the detection electrodes (12), a radiation unit (22) for radiating a transmission signal toward the person and receiving the reflected signal therefrom, and a second detection means (20) for detecting the biological information of the person by using the transmission signal and the reflected signal, wherein it is possible to more definitively detect biological information as a result of the radiation unit (22) being positioned so as not to overlap the detection electrodes (12) when viewed from the front.

Description

生体情報検知装置及び生体情報検知装置を備えた座席Biological information detection device and seat provided with biological information detection device
　本発明は、生体情報検知装置及び生体情報検知装置を備えた座席に関する。 The present invention relates to a biological information detection device and a seat including the biological information detection device.
　近年、車両の座席に配設されて、車両の運転者（人体）の生体情報を検知する生体情報検知装置が実用化されている。このような生体情報検知装置は、運転者の心拍間隔等の生体情報を検知し、検知データに基づいて運転者の覚醒度を判定する場合等に利用される。 2. Description of the Related Art In recent years, a biological information detection apparatus that is disposed in a vehicle seat and detects biological information of a vehicle driver (human body) has been put into practical use. Such a biological information detection device is used when detecting biological information such as a driver's heartbeat interval and determining the driver's arousal level based on the detected data.
　このような生体情報検知装置としては、特許文献１に係る心拍検知装置（生体情報検知装置）等が開示されている。図１０は、特許文献１に係る心拍検知装置２００の構成を示す説明図である。図１０（ａ）は、心拍検知装置２００の使用例を示す説明図であり、図１０（ｂ）は、心拍検知装置２００の構成を示す説明図である。 As such a biological information detection device, a heartbeat detection device (biological information detection device) according to Patent Document 1 is disclosed. FIG. 10 is an explanatory diagram showing a configuration of the heartbeat detection device 200 according to Patent Document 1. As shown in FIG. FIG. 10A is an explanatory diagram illustrating an example of use of the heartbeat detection device 200, and FIG. 10B is an explanatory diagram illustrating a configuration of the heartbeat detection device 200.
　心拍検知装置２００は、図１０に示すように、車両に乗車して座席２１２に着座した乗員２１１（人体）の心拍を検知する装置である。心拍検知装置２００は、センサ部２０１と演算部２０２とを備えている。演算部２０２は、心拍周期信号算出部２０３とＲ波存在区間設定部２０４と心拍ピーク信号算出部２０５とＲ波算出部２０６とＲＲＩ算出部２０７とを有している。 As shown in FIG. 10, the heartbeat detection device 200 is a device that detects the heartbeat of an occupant 211 (human body) who gets on the vehicle and sits on the seat 212. The heartbeat detection device 200 includes a sensor unit 201 and a calculation unit 202. The calculation unit 202 includes a heartbeat cycle signal calculation unit 203, an R wave existence section setting unit 204, a heartbeat peak signal calculation unit 205, an R wave calculation unit 206, and an RRI calculation unit 207.
　センサ部２０１は、ドップラーセンサと呼ばれる方式の検知装置であり、乗員２１１に向けて送信された送信信号とその反射信号とを用いて、乗員２１１の体表面の動きを検知している。心拍周期信号算出部２０３は、心拍ソース信号から乗員２１１の心拍の周期性を示す正弦波状の心拍周期信号を算出している。Ｒ波存在区間設定部２０４は、心拍周期信号に基づいてＲ波存在区間を設定している。心拍ピーク信号算出部２０５は、センサ部２０１の出力である心拍ソース信号から心拍のピーク波を強調させた心拍ピーク信号を算出している。Ｒ波算出部２０６は、心拍ピーク信号から振幅情報によりピーク波をＲ波として算出している。ＲＲＩ算出部２０７は、時間的に隣り合う２つのＲ波の時間間隔（ＲＲＩ：Ｒ－Ｒ　Ｉｎｔｅｒｖａｌ）を算出し、算出した時間間隔が異常値かどうかを判断している。 The sensor unit 201 is a detection device of a type called a Doppler sensor, and detects the movement of the body surface of the occupant 211 using a transmission signal transmitted to the occupant 211 and a reflection signal thereof. The heartbeat cycle signal calculation unit 203 calculates a sinusoidal heartbeat cycle signal indicating the periodicity of the heartbeat of the occupant 211 from the heartbeat source signal. The R wave existence section setting unit 204 sets an R wave existence section based on the heartbeat cycle signal. The heartbeat peak signal calculation unit 205 calculates a heartbeat peak signal in which the heartbeat peak signal is emphasized from the heartbeat source signal that is the output of the sensor unit 201. The R wave calculation unit 206 calculates a peak wave as an R wave based on amplitude information from the heartbeat peak signal. The RRI calculation unit 207 calculates a time interval (RRI: RR Interval) between two R waves that are adjacent in time, and determines whether the calculated time interval is an abnormal value.
　心拍検知装置２００は、このようにして、座席２１２に着座した乗員２１１の心拍に関する生体情報検を検知している。 In this way, the heartbeat detection device 200 detects a biometric information test relating to the heartbeat of the occupant 211 seated on the seat 212.
特開２０１０－１４２４５６号公報JP 2010-142456 A
　しかしながら、心拍検知装置２００では、車両の座席２１２の背もたれという特定の部位において、しかも、ドップラーセンサのみを用いて生体情報の検知を行っているため、乗員２１１の姿勢の変化や環境の変化等があった場合に生体情報の検知漏れが生じ易く、生体情報の検知が確実に行えないという課題があった。 However, since the heart rate detection device 200 detects biological information at a specific part of the back of the vehicle seat 212 using only the Doppler sensor, there is a change in the posture of the occupant 211, a change in the environment, and the like. In such a case, there is a problem that detection of biological information is likely to be missed, and detection of biological information cannot be reliably performed.
　本発明は、このような従来技術の実情に鑑みてなされたもので、その目的は、生体情報の検知をより確実に行うことができる生体情報検知装置を提供することにある。 The present invention has been made in view of such a state of the art, and an object of the present invention is to provide a biological information detection apparatus capable of more reliably detecting biological information.
　この課題を解決するために、請求項１に記載の生体情報検知装置は、人体の生体情報を検知する生体情報検知装置であって、前方に前記人体が位置するように配置された検知面と、前記検知面に沿って前記検知面の後方に配置された複数の検知電極と、前記検知電極と前記検知電極に近接する前記人体との間の容量結合を用いて前記人体の生体情報を検知する第１検知手段と、前記人体に向けて送信信号を放射すると共にその反射信号を受信する放射部と、前記送信信号と前記反射信号とを用いて前記人体の生体情報を検知する第２検知手段と、を備え、前記放射部は、前方から見て、前記検知電極と重ならない位置に配置されていることを特徴とする。 In order to solve this problem, the biological information detection device according to claim 1 is a biological information detection device that detects biological information of a human body, and includes a detection surface that is arranged so that the human body is positioned forwardly. Detecting biological information of the human body using capacitive coupling between a plurality of detection electrodes arranged behind the detection surface along the detection surface and the human body adjacent to the detection electrode First detection means for detecting a living body information of the human body using the transmission signal and the reflected signal, and a radiation unit that radiates a transmission signal toward the human body and receives the reflected signal. And the radiating portion is arranged at a position that does not overlap the detection electrode when viewed from the front.
　この構成の生体情報検知装置では、検知方法の異なる第１検知手段と第２検知手段とを用いて生体情報の検知を行っている。第１検知手段と第２検知手段とでは検知に適した環境が異なるので、人体の姿勢の変化や周囲の環境の変化等があった場合でも、生体情報の検知漏れを防止し易い。しかも、放射部は、前方から見て、検知電極と重ならない位置に配置されているので、放射部から放射される送信信号が雑音成分となって検知電極と人体との間の容量結合に及ぼす影響を低減することができる。また、放射部から放射される送信信号やその反射信号を検知電極が遮ることによる影響を低減することができる。このように、生体情報検知装置では、第１検知手段と第２検知手段との間の干渉を抑制することができる。その結果、生体情報の検知をより確実に行うことができる。 In the biometric information detection apparatus having this configuration, biometric information is detected using the first detection means and the second detection means having different detection methods. Since the first detection means and the second detection means have different environments suitable for detection, it is easy to prevent detection of biological information from being missed even when there is a change in the posture of the human body or a change in the surrounding environment. In addition, since the radiating portion is arranged at a position that does not overlap the detection electrode when viewed from the front, the transmission signal radiated from the radiating portion becomes a noise component and affects the capacitive coupling between the detection electrode and the human body. The influence can be reduced. In addition, it is possible to reduce the influence of the detection electrode blocking the transmission signal radiated from the radiating unit and the reflected signal. Thus, in the biological information detection device, interference between the first detection means and the second detection means can be suppressed. As a result, biometric information can be detected more reliably.
　請求項２に記載の生体情報検知装置では、前方から見て、前記検知電極は、前記検知面の周辺部に位置するように配置され、前記放射部は、前記検知面の中央部に位置するように配置されていることを特徴とする。 In the biological information detection device according to claim 2, when viewed from the front, the detection electrode is disposed so as to be positioned in a peripheral portion of the detection surface, and the radiating portion is positioned in a central portion of the detection surface. It is arranged so that it may be arranged.
　この構成の生体情報検知装置では、放射部は、前方から見て、検知面の中央部に位置するように配置されている。そのため、人体の位置が多少ずれても、送信信号を確実に人体に送信することができる。また、検知電極は、前方から見て、検知面の周辺部に配置されている。検知電極と放射部とをこのような配置とすることによって、放射部は、前方から見て、検知電極と重ならない位置となり、第１検知手段と第２検知手段との間の干渉を抑制することができる。その結果、生体情報の検知を更に確実に行うことができる。 In the living body information detection apparatus having this configuration, the radiating portion is disposed so as to be positioned at the center of the detection surface when viewed from the front. Therefore, even if the position of the human body is somewhat shifted, the transmission signal can be reliably transmitted to the human body. Moreover, the detection electrode is arrange | positioned in the peripheral part of the detection surface seeing from the front. By arranging the detection electrode and the radiating portion in this way, the radiating portion is positioned so as not to overlap the detection electrode when viewed from the front, and suppresses interference between the first detection means and the second detection means. be able to. As a result, biometric information can be detected more reliably.
　請求項３に記載の生体情報検知装置では、前記放射部は、前記検知電極よりも前方に突出しないように配置されていることを特徴とする。 The biological information detection apparatus according to claim 3, wherein the radiation unit is arranged so as not to protrude forward from the detection electrode.
　この構成の生体情報検知装置では、放射部は、検知電極よりも前方に突出しないように配置されている。そのため、人体が検知電極に近接しても、人体が放射部に接触することはない。そのため、人体が放射部に接触することによって生じる不快感を防止することができる。また、放射部が検知電極よりも前方に突出しないので、検知電極と人体との距離を近くすることができる。そのため、検知電極と人体との距離が離れることによる検知精度の低下を防止することができる。 In the biological information detection apparatus having this configuration, the radiating portion is disposed so as not to protrude forward from the detection electrode. Therefore, even if the human body is close to the detection electrode, the human body does not contact the radiation portion. Therefore, it is possible to prevent discomfort caused by the human body coming into contact with the radiating portion. Further, since the radiating portion does not protrude forward from the detection electrode, the distance between the detection electrode and the human body can be reduced. Therefore, it is possible to prevent a decrease in detection accuracy due to a distance between the detection electrode and the human body.
　請求項４に記載の座席は、前記人体が着座する座席であって、前記人体の背中を後方から支える背もたれ部を有し、前記背もたれ部に、請求項１ないし請求項３のいずれかに記載の生体情報検知装置が配設され、前記背もたれ部の背もたれ面が、請求項１ないし請求項３のいずれかに記載の生体情報検知装置の検知面となっていることを特徴とする。 The seat according to claim 4 is a seat on which the human body is seated, and has a backrest part that supports the back of the human body from behind, and the backrest part is provided with any one of claims 1 to 3. The living body information detection device is provided, and the backrest surface of the backrest portion is a detection surface of the living body information detection device according to any one of claims 1 to 3.
　この構成の座席は、生体情報検知装置が配設された背もたれ部を有している。そのため、この構成の座席では、着座した人体の背中を通じて生体情報の検知を行うことができる。背中は心臓に近いので、座席に着座した人体の心電や心拍動作等のような、心拍活動に関する生体情報の検知を行う場合に好適である。 The seat having this configuration has a backrest portion on which a biological information detection device is disposed. Therefore, in the seat with this configuration, it is possible to detect biological information through the back of the seated human body. Since the back is close to the heart, it is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and heartbeat motion of a human body seated on the seat.
　請求項５に記載の生体情報検知装置は、人体の生体情報を検知する生体情報検知装置であって、上方に前記人体が位置するように配置された検知面と、前記検知面に沿って前記検知面の下方に配置された複数の検知電極と、前記検知電極と前記検知電極に近接する前記人体との間の容量結合を用いて前記人体の生体情報を検知する第１検知手段と、前記人体からの圧力を検出する感圧シートと、前記感圧シートが検出した圧力を用いて前記人体の生体情報を検知する第２検知手段と、を備え、前記感圧シートは、前記検知電極の下側に配置されていることを特徴とする。 The biological information detection device according to claim 5 is a biological information detection device that detects biological information of a human body, the detection surface being arranged so that the human body is positioned above, and the detection surface along the detection surface. A plurality of detection electrodes disposed below a detection surface; and first detection means for detecting biological information of the human body using capacitive coupling between the detection electrodes and the human body adjacent to the detection electrodes; A pressure-sensitive sheet for detecting pressure from the human body, and second detection means for detecting biological information of the human body using the pressure detected by the pressure-sensitive sheet, wherein the pressure-sensitive sheet includes the detection electrode. It is arranged on the lower side.
　この構成の生体情報検知装置では、検知方法の異なる第１検知手段と第２検知手段とを用いて生体情報の検知を行っている。第１検知手段と第２検知手段とでは検知に適した環境が異なるので、人体の姿勢の変化や環境の変化等があった場合でも、生体情報の検知漏れを防止し易い。しかも、感圧シートが検知電極と人体との間に介在していないので、感圧シートが検知電極と人体との間の容量結合に影響を及ぼすのを防止することができる。また、検知電極を薄くすることによって、人体からの圧力を感圧シートへ伝達し易くすることができ、検知電極が圧電の検出に影響を及ぼすのを防止することができる。このように、生体情報検知装置では、第１検知手段と第２検知手段とが互いに干渉し合うのを防止することができる。その結果、生体情報の検知をより確実に行うことができる。 In the biometric information detection apparatus having this configuration, biometric information is detected using the first detection means and the second detection means having different detection methods. Since the first detection means and the second detection means have different environments suitable for detection, it is easy to prevent detection of biological information from being missed even when there is a change in the posture of the human body or a change in the environment. In addition, since the pressure-sensitive sheet is not interposed between the detection electrode and the human body, it is possible to prevent the pressure-sensitive sheet from affecting the capacitive coupling between the detection electrode and the human body. Further, by making the detection electrode thin, it is possible to easily transmit the pressure from the human body to the pressure-sensitive sheet, and it is possible to prevent the detection electrode from affecting the piezoelectric detection. Thus, in the biological information detection device, the first detection unit and the second detection unit can be prevented from interfering with each other. As a result, biometric information can be detected more reliably.
　請求項６に記載の生体情報検知装置では、前記検知面は、互いに対向する２つの側端部を有し、前記感圧シートは、前記２つの側端部に亘って延びる複数の感圧素子を有していることを特徴とする。 The biological information detection apparatus according to claim 6, wherein the detection surface has two side end portions facing each other, and the pressure-sensitive sheet has a plurality of pressure-sensitive elements extending over the two side end portions. It is characterized by having.
　この構成の生体情報検知装置では、感圧シートは、検知面の２つの側端部に亘って延びる複数の感圧素子を有している。そのため、人体の位置が多少ずれても、圧力の検出漏れを防止し易い。その結果、生体情報の検知を更に確実に行うことができる。 In the living body information detection apparatus having this configuration, the pressure-sensitive sheet has a plurality of pressure-sensitive elements extending over two side ends of the detection surface. Therefore, even if the position of the human body is slightly deviated, it is easy to prevent pressure detection omission. As a result, biometric information can be detected more reliably.
　請求項７に記載の座席は、前記人体が着座する座席であって、前記人体のでん部を下から支える着座部を有し、前記着座部に、請求項５又は請求項６に記載の生体情報検知装置が配設され、前記着座部の着座面が、請求項５又は請求項６に記載の生体情報検知装置の検知面となっていることを特徴とする。 The seat according to claim 7 is a seat on which the human body is seated, and has a seat portion that supports a lower part of the human body from below, and the living body according to claim 5 or 6 is provided in the seat portion. An information detection device is provided, and a seating surface of the seating portion is a detection surface of the biological information detection device according to claim 5 or 6.
　この構成の座席は、生体情報検知装置が配設された着座部を有している。そのため、この構成の座席では、着座した人体のでん部を通じて生体情報の検知を行うことができる。着座中は常にでん部が着座面に押し当てられるので、検知電極とでん部との近接を安定させ易く、また、でん部からの圧力を感圧シートに伝え易い。そのため、このような座席は、着座した人体のでん部付近の心電や圧力変動等のような、心拍活動に関する生体情報の検知を行う場合に好適である。 The seat having this configuration has a seating portion in which a biological information detection device is disposed. Therefore, in the seat with this configuration, it is possible to detect biological information through the seated portion of the seated human body. The seat is always pressed against the seating surface while seated, so that the proximity between the detection electrode and the seat is easily stabilized, and the pressure from the seat is easily transmitted to the pressure sensitive sheet. Therefore, such a seat is suitable for detecting biological information related to heartbeat activity, such as electrocardiograms and pressure fluctuations in the vicinity of the seat of the seated human body.
　請求項８に記載の座席は、前記人体が着座する座席であって、前記人体の背中を後方から支える背もたれ部と、前記人体のでん部を下から支える着座部と、を有し、前記背もたれ部に、請求項１ないし請求項３のいずれかに記載の生体情報検知装置が配設され、前記背もたれ部の背もたれ面が、請求項１ないし請求項３のいずれかに記載の生体情報検知装置の検知面となり、前記着座部に、請求項５又は請求項６に記載の生体情報検知装置が配設され、前記着座部の着座面が、請求項５又は請求項６に記載の生体情報検知装置の検知面となっていることを特徴とする。 The seat according to claim 8 is a seat on which the human body is seated, and includes a backrest portion that supports the back of the human body from behind, and a seating portion that supports the waist portion of the human body from below, and the backrest. The living body information detection device according to any one of claims 1 to 3 is disposed in a portion, and the backrest surface of the backrest portion is the living body information detection device according to any one of claims 1 to 3. The living body information detection device according to claim 5 or 6 is arranged in the seating part, and the seating surface of the seating part is the living body information detection according to claim 5 or 6. It is a detection surface of the apparatus.
　この構成の座席は、生体情報検知装置が配設された背もたれ部と着座部とを有している。そのため、この構成の座席では、着座した人体の背中とでん部とを通じて生体情報の検知を行うことができる。そして、人体の背中とでん部という複数の部位を通じて生体情報の検知を行うことによって、生体情報の検知を更に確実に行うことができる。 The seat having this configuration has a backrest portion and a seating portion in which a biological information detection device is disposed. For this reason, in the seat with this configuration, it is possible to detect biological information through the back of the human body seated and the waist. And detection of biometric information can be performed more reliably by detecting biometric information through a plurality of parts, such as the back and the elbow of the human body.
　本発明によれば、生体情報の検知をより確実に行うことができる生体情報検知装置を提供することができる。 According to the present invention, it is possible to provide a biological information detection apparatus that can more reliably detect biological information.
本発明の第１実施形態に係る生体情報検知装置１の使用例を示す説明図である。It is explanatory drawing which shows the usage example of the biometric information detection apparatus 1 which concerns on 1st Embodiment of this invention. 図１に示す生体情報検知装置１の配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the biometric information detection apparatus 1 shown in FIG. 図１に示す生体情報検知装置１の構成を示す説明図である。It is explanatory drawing which shows the structure of the biometric information detection apparatus 1 shown in FIG. 図３に示す検知電極１２と放射部２２との配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the detection electrode 12 and the radiation | emission part 22 which are shown in FIG. 本発明の第２実施形態に係る生体情報検知装置１０１の使用例を示す説明図である。It is explanatory drawing which shows the usage example of the biometric information detection apparatus 101 which concerns on 2nd Embodiment of this invention. 図５に示す生体情報検知装置１０１の配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the biometric information detection apparatus 101 shown in FIG. 図５に示す生体情報検知装置１０１の構成を示す説明図である。It is explanatory drawing which shows the structure of the biometric information detection apparatus 101 shown in FIG. 図７に示す感圧素子１２２の側断面構造を模式的に示す説明図である。It is explanatory drawing which shows typically the side cross-section of the pressure sensitive element 122 shown in FIG. 本発明の第３実施形態に係る生体情報検知装置１と生体情報検知装置１０１との配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning with the biometric information detection apparatus 1 and the biometric information detection apparatus 101 which concern on 3rd Embodiment of this invention. 特許文献１に係る心拍検知装置２００の構成を示す説明図である。It is explanatory drawing which shows the structure of the heart rate detection apparatus 200 which concerns on patent document 1. FIG.
　［第１実施形態］
　以下、本考案の第１実施形態について図面を参照しながら説明する。尚、各図において、Ｘ１方向を左方向、Ｘ２方向を右方向、Ｙ１方向を前方、Ｙ２方向を後方、Ｚ１方向を上方、Ｚ２方向を下方として、説明を進める。 [First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In each drawing, the description will be made with the X1 direction as the left direction, the X2 direction as the right direction, the Y1 direction as the front, the Y2 direction as the rear, the Z1 direction as the upper side, and the Z2 direction as the lower side.
　まず、本実施形態に係る生体情報検知装置１の構成について、図１ないし図４を用いて説明する。図１は、本発明の第１実施形態に係る生体情報検知装置１の使用例を示す説明図である。図２は、図１に示す生体情報検知装置１の配置を示す説明図である。図２（ａ）は、座席７０を前方から見た図であり、図２（ｂ）は、座席７０と運転者６０とを横から見た図である。図３は、図１に示す生体情報検知装置１の構成を示す説明図である。図３は、生体情報検知装置１の分解斜視図である。図４は、図３に示す検知電極１２と放射部２２との配置を示す説明図である。図４（ａ）は、検知電極１２と放射部２２とを上方から見た図であり、図４（ｂ）は、検知電極１２と放射部２２とを前方から見た図である。 First, the configuration of the biological information detection apparatus 1 according to the present embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is an explanatory diagram showing a usage example of the biological information detection apparatus 1 according to the first embodiment of the present invention. FIG. 2 is an explanatory diagram showing the arrangement of the biological information detection device 1 shown in FIG. 2A is a view of the seat 70 as viewed from the front, and FIG. 2B is a view of the seat 70 and the driver 60 as viewed from the side. FIG. 3 is an explanatory diagram showing a configuration of the biological information detection apparatus 1 shown in FIG. FIG. 3 is an exploded perspective view of the biological information detection apparatus 1. FIG. 4 is an explanatory diagram showing the arrangement of the detection electrodes 12 and the radiation portions 22 shown in FIG. 4A is a view of the detection electrode 12 and the radiating portion 22 as viewed from above, and FIG. 4B is a view of the detection electrode 12 and the radiating portion 22 as viewed from the front.
　生体情報検知装置１は、図１及び図２に示すように、車両の座席７０に配設して使用され、車両の運転者６０（人体）の生体情報を検知している。座席７０は、運転者６０の背中６１を後方から支える背もたれ部７１を有している。背もたれ部７１の前面のうち、運転者６０の背中６１が接触する略長方形の部分が背もたれ面７２となっている。また、座席７０は、運転者６０のでん部６２を下から支える着座部７３を有している。着座部７３の上面のうち、運転者６０のでん部６２が接触する略長方形の部分が着座面７４となっている。 As shown in FIGS. 1 and 2, the biological information detection apparatus 1 is used by being disposed in a vehicle seat 70 to detect biological information of a vehicle driver 60 (human body). The seat 70 has a backrest portion 71 that supports the back 61 of the driver 60 from behind. Of the front surface of the backrest portion 71, a substantially rectangular portion with which the back 61 of the driver 60 contacts is a backrest surface 72. The seat 70 also has a seating portion 73 that supports the driver's 60 seat 62 from below. Of the upper surface of the seating portion 73, a substantially rectangular portion with which the driver's 60 dent portion 62 contacts is a seating surface 74.
　運転者６０は、背もたれ面７２の前方に背中６１が位置し、着座面７４の上方にでん部６２が位置するように、座席７０に着座する。そして、本実施形態では、座席７０の背もたれ部７１に生体情報検知装置１が配設され、座席７０の背もたれ面７２が生体情報検知装置１の検知面２となっている。 The driver 60 is seated on the seat 70 such that the back 61 is located in front of the backrest surface 72 and the elbow 62 is located above the seating surface 74. In the present embodiment, the biological information detection device 1 is disposed on the backrest portion 71 of the seat 70, and the backrest surface 72 of the seat 70 is the detection surface 2 of the biological information detection device 1.
　生体情報検知装置１は、図３に示すように、第１検知手段１０と第２検知手段２０とを備えている。第１検知手段１０と第２検知手段２０とは、背もたれ部７１の内部に配置されている。また、第１検知手段１０と第２検知手段２０とは、図示しない配線を介して、着座部７３の内部に配置された制御装置３０に接続されている。 The biological information detection apparatus 1 includes first detection means 10 and second detection means 20 as shown in FIG. The first detection means 10 and the second detection means 20 are disposed inside the backrest portion 71. Moreover, the 1st detection means 10 and the 2nd detection means 20 are connected to the control apparatus 30 arrange | positioned inside the seating part 73 via the wiring which is not shown in figure.
　第１検知手段１０は、容量結合方式の検知装置である。第１検知手段１０は、図３に示すように、検知シート１１と、検知シート１１の前面側に形成された６つの検知電極１２と、検知シート１１の背面側に形成された接地電極１３と、を有している。検知シート１１は、布等の絶縁体でできたフィルムである。検知シート１１は、検知面２に沿って検知面２の後方に配置されている。 The first detection means 10 is a capacitive coupling type detection device. As shown in FIG. 3, the first detection means 10 includes a detection sheet 11, six detection electrodes 12 formed on the front side of the detection sheet 11, and a ground electrode 13 formed on the back side of the detection sheet 11. ,have. The detection sheet 11 is a film made of an insulator such as cloth. The detection sheet 11 is disposed behind the detection surface 2 along the detection surface 2.
　検知電極１２は略長方形の電極である。検知電極１２の表面は、図示しない絶縁体の保護膜で覆われている。図４に示すように、３つの検知電極１２は、前方から見て、検知面２の左端部（周辺部）に位置するように上下に並べて配置され、他の３つの検知電極１２は、前方から見て、検知面２の右端部（周辺部）に位置するように上下に並べて配置されている。そして、運転者６０が着座する際には、運転者６０の背中６１が検知電極１２に近接するようになっている。 The detection electrode 12 is a substantially rectangular electrode. The surface of the detection electrode 12 is covered with an insulating protective film (not shown). As shown in FIG. 4, the three detection electrodes 12 are arranged side by side so as to be positioned at the left end portion (peripheral portion) of the detection surface 2 when viewed from the front, and the other three detection electrodes 12 When viewed from above, they are arranged side by side so as to be located at the right end (peripheral part) of the detection surface 2. When the driver 60 is seated, the back 61 of the driver 60 comes close to the detection electrode 12.
　検知電極１２に運転者６０の背中６１が近接すると、検知電極１２と背中６１とが容量結合する。そして、検知電極１２は、検知電極１２と背中６１との容量結合を用いて、運転者６０の心拍等の生体活動に伴う背中６１の表面電位の変化（以下、心電と略称）に対応した電気信号を検出している。検知電極１２が検出した電気信号は制御装置３０に伝達される。 When the back 61 of the driver 60 comes close to the detection electrode 12, the detection electrode 12 and the back 61 are capacitively coupled. And the detection electrode 12 respond | corresponded to the change (henceforth an electrocardiogram) of the surface potential of the back 61 accompanying the biological activity of the driver | operator 60, such as a heartbeat, using the capacitive coupling of the detection electrode 12 and the back 61. An electrical signal is detected. The electrical signal detected by the detection electrode 12 is transmitted to the control device 30.
　接地電極１３は、前方から見て、検知面２の上端部と下端部と左端部と右端部と（周辺部）に対応する位置に形成されている。検知面２の中央部に対応する位置には、接地電極１３は形成されていない。接地電極１３は、図示しない配線等を介して接地され、検知電極１２と背中６１との容量結合を安定させている。 The ground electrode 13 is formed at positions corresponding to the upper end, lower end, left end, right end (peripheral portion) of the detection surface 2 when viewed from the front. The ground electrode 13 is not formed at a position corresponding to the central portion of the detection surface 2. The ground electrode 13 is grounded via a wiring or the like (not shown), and the capacitive coupling between the detection electrode 12 and the back 61 is stabilized.
　尚、十分な検知精度が得られる場合には、接地電極１３は無くても構わない。また、図示しないが、検知シート１１には、ノイズ除去のための電気信号を運転者６０の背中６１にフィードバックするフィードバック用の電極が配置されていても構わない。 If sufficient detection accuracy is obtained, the ground electrode 13 may be omitted. Although not shown, the detection sheet 11 may be provided with a feedback electrode that feeds back an electric signal for noise removal to the back 61 of the driver 60.
　第２検知手段２０は、ドップラーセンサと呼ばれる方式の検知装置である。第２検知手段２０は、図３に示すように、送受信回路が内蔵された２つの本体部２１と、本体部２１の前面側にそれぞれ形成された放射部２２と、２つの本体部２１が取り付けられる取付け板２３と、取付け板２３が固定される固定フレーム２４と、を有している。 The second detection means 20 is a detection device called a Doppler sensor. As shown in FIG. 3, the second detection unit 20 includes two main body parts 21 each including a transmission / reception circuit, a radiation part 22 formed on the front side of the main body part 21, and two main body parts 21. And a fixed frame 24 to which the mounting plate 23 is fixed.
　放射部２２は、高周波の電磁波信号を送受信するためのアンテナである。放射部２２は、例えば、一方の板面に送受信回路が形成された配線基板の他方の板面に所定の電極パターンを形成することで得られる。放射部２２は、図示しない配線等を介して本体部２１に内蔵された送受信回路に接続されている。 The radiating unit 22 is an antenna for transmitting and receiving a high-frequency electromagnetic wave signal. The radiating portion 22 is obtained, for example, by forming a predetermined electrode pattern on the other plate surface of the wiring board on which the transmission / reception circuit is formed on one plate surface. The radiating unit 22 is connected to a transmission / reception circuit built in the main body unit 21 through a wiring or the like (not shown).
　放射部２２は、本体部２１が生成した高周波の送信信号を電磁波信号として運転者６０の背中６１に放射すると共に、送信信号の運転者６０の背中６１からの反射信号を受信している。放射部２２が受信した反射信号は、本体部２１で送信信号と混合される。そして、本体部２１は、送信信号と反射信号との混合信号に基づく検波信号を出力している。検波信号は、運転者６０の心拍等の生体活動に伴う背中６１の動き（以下、心拍動作と略称）に関する動作情報を含んだ電気信号となる。本体部２１が出力した電気信号は、制御装置３０に伝達される。 The radiation unit 22 radiates the high-frequency transmission signal generated by the main body unit 21 as an electromagnetic wave signal to the back 61 of the driver 60 and receives a reflection signal from the back 61 of the driver 60 of the transmission signal. The reflected signal received by the radiating unit 22 is mixed with the transmission signal by the main body unit 21. And the main-body part 21 is outputting the detection signal based on the mixed signal of a transmission signal and a reflected signal. The detection signal is an electrical signal including operation information related to the movement of the back 61 (hereinafter, abbreviated as a heartbeat operation) associated with a biological activity such as a heartbeat of the driver 60. The electrical signal output from the main body 21 is transmitted to the control device 30.
　取付け板２３は、アルミニウム等の金属でできた板状の部材である。放射部２２は、取付け板２３の前面側に接着等の方法で取り付けられる。固定フレーム２４は、アルミニウム等の金属でできた枠状の部材である。取付け板２３は、固定フレーム２４にねじ止め等の方法で固定され、固定フレーム２４は、座席７０の背もたれ部７１の内部に固定される。その際、図４に示すように、放射部２２は、前方から見て、検知面２の中央部に位置するように配置される。その結果、放射部２２は、前方から見て、検知電極１２や接地電極１３と重ならない位置となる。また、放射部２２は、検知電極１２の前方に突出しないように配置される。 The mounting plate 23 is a plate-like member made of metal such as aluminum. The radiating portion 22 is attached to the front side of the mounting plate 23 by a method such as adhesion. The fixed frame 24 is a frame-shaped member made of metal such as aluminum. The attachment plate 23 is fixed to the fixed frame 24 by a method such as screwing, and the fixed frame 24 is fixed inside the backrest portion 71 of the seat 70. In that case, as shown in FIG. 4, the radiation | emission part 22 is arrange | positioned so that it may be located in the center part of the detection surface 2 seeing from the front. As a result, the radiating portion 22 is positioned so as not to overlap the detection electrode 12 and the ground electrode 13 when viewed from the front. Further, the radiating portion 22 is arranged so as not to protrude in front of the detection electrode 12.
　制御装置３０は、第１検知手段１０と第２検知手段２０とを制御している。また、制御装置３０は、第１検知手段１０の６つの検知電極１２から伝達された電気信号と、第２検知手段２０の２つの本体部２１から伝達された電気信号と、に基づいて、運転者６０の心拍等に関する生体情報を算出している。 The control device 30 controls the first detection means 10 and the second detection means 20. In addition, the control device 30 operates based on the electrical signals transmitted from the six detection electrodes 12 of the first detection means 10 and the electrical signals transmitted from the two main body portions 21 of the second detection means 20. Biological information relating to the heartbeat and the like of the person 60 is calculated.
　生体情報検知装置１では、このように、検知方法の異なる第１検知手段１０と第２検知手段２０とを用いて生体情報の検知を行っている。容量結合方式の検知装置を用いた生体情報の検出原理は公知なので、詳細な説明は省略する。また、ドップラーセンサ方式の検知装置を用いた生体情報の検出原理も公知なので、詳細な説明は省略する。 In the biological information detection apparatus 1, the biological information is detected by using the first detection means 10 and the second detection means 20 having different detection methods as described above. Since the detection principle of biological information using a capacitive coupling type detection device is known, detailed description thereof is omitted. In addition, since the detection principle of biological information using a Doppler sensor type detection device is also known, detailed description is omitted.
　第１検知手段１０は、検知電極１２に運転者６０の背中６１を近接させる必要があるものの、検知電極１２に背中６１が近接していれば、運転者６０が体を多少動かしても安定して検知を行えるという利点を有している。また、第２検知手段２０は、運転者６０が体を動かした場合には検知が不安定になり易いものの、背中６１が放射部２２に近接していなくても検知できるという利点を有している。そのため、制御装置３０が、第１検知手段１０から伝達された心電に関する電気信号と、第２検知手段２０から伝達された心拍動作に関する電気信号と、に基づいて生体情報の算出を行うことによって、生体情報の検知漏れの可能性を低減することができる。 Although the first detection means 10 needs to bring the back 61 of the driver 60 close to the detection electrode 12, if the back 61 is close to the detection electrode 12, it is stable even if the driver 60 moves the body somewhat. Has the advantage of being able to detect. In addition, the second detection means 20 has an advantage that it can be detected even if the back 61 is not close to the radiating portion 22 although the detection is likely to be unstable when the driver 60 moves the body. Yes. Therefore, the control device 30 calculates biological information based on the electrical signal related to the electrocardiogram transmitted from the first detection means 10 and the electrical signal related to the heartbeat motion transmitted from the second detection means 20. The possibility of detection failure of biological information can be reduced.
　尚、第１検知手段１０の検知電極１２から伝達された電気信号に基づいて、生体情報の算出を行う際には、１つの検知電極１２から伝達された電気信号に基づいて生体情報の算出することも可能であるが、複数の検知電極１２から伝達された電気信号の差分に基づいて生体情報を算出することによって、検知の精度を高めることができる。そのため、検知電極１２の数は複数であることが望ましい。 When calculating biological information based on the electrical signal transmitted from the detection electrode 12 of the first detection means 10, the biological information is calculated based on the electrical signal transmitted from one detection electrode 12. Although it is possible, the accuracy of detection can be improved by calculating the biological information based on the difference between the electrical signals transmitted from the plurality of detection electrodes 12. Therefore, it is desirable that the number of detection electrodes 12 is plural.
　次に、本実施形態の効果について説明する。本実施形態の生体情報検知装置１では、検知方法の異なる第１検知手段１０と第２検知手段２０とを用いて運転者６０の生体情報の検知を行っている。前述したように、第１検知手段１０と第２検知手段２０とでは検知に適した環境が異なるので、運転者６０の姿勢の変化や周囲の環境の変化等があった場合でも、生体情報の検知漏れを防止し易い。しかも、放射部２２は、前方から見て、検知電極１２や接地電極１３と重ならない位置に配置されているので、放射部２２から放射される送信信号は、検知電極１２や接地電極１３が配置されていない領域を通って運転者６０に到達することができる。そのため、放射部２２から放射される送信信号が雑音成分となって検知電極１２と人体との間の容量結合に及ぼす影響を低減することができる。また、放射部２２から放射される送信信号やその反射信号を検知電極１２が遮ることによる影響を低減することができる。このように、生体情報検知装置１では、第１検知手段１０と第２検知手段２０との間の干渉を抑制することができる。その結果、生体情報検知装置１では、生体情報の検知をより確実に行うことができる。 Next, the effect of this embodiment will be described. In the biological information detection apparatus 1 of the present embodiment, the biological information of the driver 60 is detected using the first detection means 10 and the second detection means 20 that are different in detection method. As described above, the first detection unit 10 and the second detection unit 20 have different environments suitable for detection. Therefore, even if there is a change in the posture of the driver 60, a change in the surrounding environment, or the like, It is easy to prevent detection leakage. Moreover, since the radiation part 22 is arranged at a position that does not overlap the detection electrode 12 and the ground electrode 13 when viewed from the front, the transmission signal radiated from the radiation part 22 is arranged by the detection electrode 12 and the ground electrode 13. The driver 60 can be reached through an area that is not. Therefore, it is possible to reduce the influence of the transmission signal radiated from the radiating unit 22 on the capacitive coupling between the detection electrode 12 and the human body as a noise component. Moreover, the influence by the detection electrode 12 blocking the transmission signal radiated | emitted from the radiation | emission part 22 and its reflected signal can be reduced. As described above, in the biological information detection apparatus 1, interference between the first detection unit 10 and the second detection unit 20 can be suppressed. As a result, the biological information detection apparatus 1 can more reliably detect biological information.
　また、本実施形態の生体情報検知装置１では、放射部２２は、前方から見て、検知面の中央部に位置するように配置されている。そのため、運転者６０の背中６１の位置が多少ずれても、送信信号を確実に運転者６０の背中６１に送信することができる。また、検知電極１２は、前方から見て、検知面の周辺部に配置されている。検知電極１２と放射部２２とをこのような配置とすることによって、放射部２２は、前方から見て、検知電極１２と重ならない位置となり、第１検知手段１０と第２検知手段２０との間の干渉を抑制することができる。その結果、生体情報検知装置１では、生体情報の検知を更に確実に行うことができる。 Further, in the biological information detection apparatus 1 of the present embodiment, the radiating unit 22 is disposed so as to be located at the center of the detection surface when viewed from the front. Therefore, even if the position of the back 61 of the driver 60 is slightly shifted, the transmission signal can be reliably transmitted to the back 61 of the driver 60. Moreover, the detection electrode 12 is arrange | positioned in the peripheral part of the detection surface seeing from the front. By arranging the detection electrode 12 and the radiating portion 22 in this manner, the radiating portion 22 is positioned so as not to overlap the detection electrode 12 when viewed from the front, and the first detection means 10 and the second detection means 20 Interference can be suppressed. As a result, the biological information detection apparatus 1 can more reliably detect biological information.
　また、本実施形態の生体情報検知装置１では、放射部２２は、検知電極１２よりも前方に突出しないように配置されている。そのため、運転者６０の背中６１が検知電極１２に近接しても、運転者６０の背中６１が放射部２２に接触することはない。そのため、運転者６０の背中６１が放射部２２に接触することによって生じる不快感を防止することができる。また、放射部２２が検知電極１２よりも前方に突出しないことから、検知電極１２と運転者６０の背中６１との距離を近くすることができる。そのため、検知電極１２と運転者６０の背中６１との距離が離れることによる検知精度の低下を防止することができる。 Further, in the biological information detection apparatus 1 of the present embodiment, the radiating unit 22 is disposed so as not to protrude forward from the detection electrode 12. Therefore, even if the back 61 of the driver 60 is close to the detection electrode 12, the back 61 of the driver 60 does not contact the radiation unit 22. Therefore, discomfort caused by the driver's 60 back 61 coming into contact with the radiation portion 22 can be prevented. Moreover, since the radiation part 22 does not protrude forward from the detection electrode 12, the distance between the detection electrode 12 and the back 61 of the driver 60 can be reduced. Therefore, it is possible to prevent a decrease in detection accuracy due to the distance between the detection electrode 12 and the back 61 of the driver 60 being increased.
　また、本実施形態の座席７０は、運転者６０の背中６１を後方から支える背もたれ部７１を有し、背もたれ部７１に、生体情報検知装置１が配設されている。そして、背もたれ部７１の背もたれ面７２が、生体情報検知装置１の検知面２となっている。そのため、この構成の座席７０では、着座した運転者６０の背中６１を通じて運転者６０の生体情報の検知を行うことができる。しかも、背中６１は心臓に近いので、座席７０に着座した運転者６０の心電や心拍動作等のような、心拍活動に関する生体情報の検知を行う場合に好適である。 In addition, the seat 70 of the present embodiment has a backrest portion 71 that supports the back 61 of the driver 60 from behind, and the biological information detection device 1 is disposed in the backrest portion 71. The backrest surface 72 of the backrest 71 is the detection surface 2 of the biological information detection device 1. Therefore, in the seat 70 having this configuration, the biological information of the driver 60 can be detected through the back 61 of the driver 60 who is seated. Moreover, since the back 61 is close to the heart, it is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and heartbeat motion of the driver 60 seated on the seat 70.
　［第２実施形態］
　以下、本発明の第２実施形態について図面を参照しながら説明する。尚、本実施形態において、前述した第１実施形態と同一の構成である場合、同一符号を付して詳細な説明は省略する。 [Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In addition, in this embodiment, when it is the same structure as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
　まず、本実施形態に係る生体情報検知装置１０１の構成について、図５ないし図８を用いて説明する。図５は、本発明の第２実施形態に係る生体情報検知装置１０１の使用例を示す説明図である。図６は、図５に示す生体情報検知装置１０１の配置を示す説明図である。図６（ａ）は、座席７０を上方から見た図であり、図６（ｂ）は、座席７０と運転者６０とを横から見た図である。図７は、図５に示す生体情報検知装置１０１の構成を示す説明図である。図７は、生体情報検知装置１０１の分解斜視図である。図８は、図７に示す感圧素子１２２の側断面構造を模式的に示す説明図である。 First, the configuration of the biological information detection apparatus 101 according to the present embodiment will be described with reference to FIGS. FIG. 5 is an explanatory diagram showing a usage example of the biological information detection apparatus 101 according to the second embodiment of the present invention. FIG. 6 is an explanatory diagram showing the arrangement of the biological information detection apparatus 101 shown in FIG. FIG. 6A is a view of the seat 70 viewed from above, and FIG. 6B is a view of the seat 70 and the driver 60 viewed from the side. FIG. 7 is an explanatory diagram showing the configuration of the biological information detection apparatus 101 shown in FIG. FIG. 7 is an exploded perspective view of the biological information detection apparatus 101. FIG. 8 is an explanatory view schematically showing a side sectional structure of the pressure sensitive element 122 shown in FIG.
　生体情報検知装置１０１は、図５及び図６に示すように、車両の座席７０に配設して使用され、車両の運転者６０（人体）の生体情報を検知している。本実施形態では、着座面７４が生体情報検知装置１０１の検知面１０２となっている。 As shown in FIGS. 5 and 6, the biological information detection apparatus 101 is disposed and used in a vehicle seat 70 to detect biological information of a driver 60 (human body) of the vehicle. In the present embodiment, the seating surface 74 is the detection surface 102 of the biological information detection device 101.
　生体情報検知装置１０１は、図６に示すように、第１検知手段１１０と第２検知手段１２０とを備えている。第１検知手段１１０と第２検知手段１２０とは、着座部７３の内部に配置されている。第１検知手段１１０と第２検知手段１２０とは、図示しない配線を介して、着座部７３の内部に配置された制御装置３０に接続されている。 The biological information detection apparatus 101 includes first detection means 110 and second detection means 120 as shown in FIG. The first detection unit 110 and the second detection unit 120 are disposed inside the seating portion 73. The 1st detection means 110 and the 2nd detection means 120 are connected to the control apparatus 30 arrange | positioned inside the seating part 73 via the wiring which is not shown in figure.
　第１検知手段１１０は、容量結合方式の検知装置である。第１検知手段１１０は、図７に示すように、検知シート１１１と、検知シート１１１の上面側に形成された２つの検知電極１１２と、検知シート１１１の下面側に形成された接地電極１１３と、を有している。検知シート１１１は、検知面１０２に沿って検知面１０２の下方に配置されている。 The first detection means 110 is a capacitive coupling type detection device. As shown in FIG. 7, the first detection unit 110 includes a detection sheet 111, two detection electrodes 112 formed on the upper surface side of the detection sheet 111, and a ground electrode 113 formed on the lower surface side of the detection sheet 111. ,have. The detection sheet 111 is disposed below the detection surface 102 along the detection surface 102.
　検知電極１１２は略長方形の電極である。検知電極１１２の表面は、図示しない絶縁体の保護膜で覆われている。２つの検知電極１１２は、上方から見て、検知面１０２の後部側に位置するように左右に並べて配置されている。そして、運転者６０が着座する際には、運転者６０のでん部６２が検知電極１１２に近接するようになっている。 The detection electrode 112 is a substantially rectangular electrode. The surface of the detection electrode 112 is covered with an insulating protective film (not shown). The two detection electrodes 112 are arranged side by side so as to be positioned on the rear side of the detection surface 102 when viewed from above. When the driver 60 is seated, the driver's 60 seat 62 is brought close to the detection electrode 112.
　検知電極１１２に運転者６０のでん部６２が近接すると、検知電極１１２とでん部６２とが容量結合する。そして、検知電極１１２は、検知電極１１２とでん部６２との容量結合を用いて、運転者６０の心拍等の生体活動に伴うでん部６２の表面電位の変化（以下、心電と略称）に対応した電気信号を検出している。検知電極１１２が検出した電気信号は、制御装置３０に伝達される。 When the waist portion 62 of the driver 60 comes close to the detection electrode 112, the detection electrode 112 and the waist portion 62 are capacitively coupled. Then, the sensing electrode 112 uses a capacitive coupling between the sensing electrode 112 and the waist portion 62 to change the surface potential of the waist portion 62 due to a biological activity such as a heartbeat of the driver 60 (hereinafter abbreviated as electrocardiogram). ) Is detected. The electrical signal detected by the detection electrode 112 is transmitted to the control device 30.
　接地電極１１３は、上方から見て、検知面１０２の全面に対応する位置に形成されている。接地電極１１３は、図示しない配線等を介して接地され、検知電極１１２とでん部６２との容量結合を安定させている。 The ground electrode 113 is formed at a position corresponding to the entire surface of the detection surface 102 when viewed from above. The ground electrode 113 is grounded via an unillustrated wiring or the like, and stabilizes the capacitive coupling between the detection electrode 112 and the rod portion 62.
　尚、十分な検知精度が得られる場合には、接地電極１１３は無くても構わない。また、図示しないが、検知シート１１１には、ノイズ除去のための電気信号をでん部６２にフィードバックするフィードバック用の電極等が配置されていても構わない。 If sufficient detection accuracy can be obtained, the ground electrode 113 may not be provided. Although not shown, the detection sheet 111 may be provided with a feedback electrode or the like that feeds back an electric signal for noise removal to the bellows 62.
　第２検知手段１２０は、圧電方式の検知装置である。第２検知手段１２０は、図７に示すように、感圧シート１２１と、感圧シート１２１の上面側に配置された４つの感圧素子１２２と、感圧シート１２１の下面側に配置されたクッション１２７と、を有している。感圧シート１２１は、布等の絶縁体でできたフィルムである。 The second detection means 120 is a piezoelectric detection device. As shown in FIG. 7, the second detection unit 120 is arranged on the pressure-sensitive sheet 121, the four pressure-sensitive elements 122 arranged on the upper surface side of the pressure-sensitive sheet 121, and the lower surface side of the pressure-sensitive sheet 121. And a cushion 127. The pressure sensitive sheet 121 is a film made of an insulator such as cloth.
　感圧素子１２２は、上方から見て細長い長方形の形状を有した素子であり、着座面７４の左端部から右端部に亘って延びている。４つの感圧素子１２２は、感圧シート１２１の上面に、前後方向にほぼ等間隔に並べて配置されている。感圧素子１２２は、図８に示すように、感圧シート１２１の上面側に配置された絶縁フィルム１２３と、絶縁フィルム１２３の上に形成された第１電極層１２４と、その上に形成された圧電体層１２５と、その上に形成された第２電極層１２６と、で構成されている。圧電体層１２５に使用される材料としては、チタン酸バリウム等の圧電性を有したセラミックの微粒子が練りこまれた樹脂等が使用される。感圧素子１２２の表面は、図示しない絶縁体の保護膜で覆われている。 The pressure-sensitive element 122 is an element having an elongated rectangular shape when viewed from above, and extends from the left end portion of the seating surface 74 to the right end portion. The four pressure sensitive elements 122 are arranged on the upper surface of the pressure sensitive sheet 121 so as to be arranged at substantially equal intervals in the front-rear direction. As shown in FIG. 8, the pressure sensitive element 122 is formed on the insulating film 123 disposed on the upper surface side of the pressure sensitive sheet 121, the first electrode layer 124 formed on the insulating film 123, and the first electrode layer 124. The piezoelectric layer 125 and the second electrode layer 126 formed thereon are configured. As a material used for the piezoelectric layer 125, a resin in which fine particles of piezoelectric ceramic such as barium titanate are kneaded is used. The surface of the pressure sensitive element 122 is covered with an insulating protective film (not shown).
　感圧素子１２２は圧電効果を有している。そして、感圧素子１２２は、圧電効果を利用して、運転者６０の心拍等の生体活動に伴うでん部６２からの圧力の微小な変動（以下、圧力変動と略称）に対応した電気信号を発生させている。感圧素子１２２が発生させた電気信号は、制御装置３０に伝達される。 The pressure sensitive element 122 has a piezoelectric effect. The pressure-sensitive element 122 uses the piezoelectric effect to make an electrical signal corresponding to a minute change in pressure from the waist portion 62 (hereinafter, abbreviated as pressure fluctuation) due to a biological activity such as a heartbeat of the driver 60. Is generated. The electrical signal generated by the pressure sensitive element 122 is transmitted to the control device 30.
　クッション１２７は、ウレタンのような弾力性を有した樹脂でできた板状の部材である。クッション１２７は、着座部７３の内部に保持されて、検知シート１１１と感圧シート１２１とを下側から支えている。 The cushion 127 is a plate-like member made of a resin having elasticity such as urethane. The cushion 127 is held inside the seating portion 73 and supports the detection sheet 111 and the pressure sensitive sheet 121 from below.
　制御装置３０は、第１検知手段１１０と第２検知手段１２０とを制御している。また、制御装置３０は、第１検知手段１１０の２つの検知電極１１２から伝達された電気信号と、第２検知手段１２０の４つの感圧素子１２２から伝達された電気信号と、に基づいて、運転者６０の心拍等に関する生体情報を算出している。 The control device 30 controls the first detection means 110 and the second detection means 120. Further, the control device 30 is based on the electrical signals transmitted from the two detection electrodes 112 of the first detection means 110 and the electrical signals transmitted from the four pressure sensitive elements 122 of the second detection means 120. Biological information related to the heartbeat and the like of the driver 60 is calculated.
　生体情報検知装置１０１では、このように、検知方法の異なる第１検知手段１１０と第２検知手段１２０とを用いて生体情報の検知を行っている。容量結合方式の検知装置を用いた生体情報の検出原理は公知なので、詳細な説明は省略する。また、圧電方式の検知装置を用いた生体情報の検出原理も公知なので、詳細な説明は省略する。 In this way, the biological information detection apparatus 101 detects biological information using the first detection means 110 and the second detection means 120 having different detection methods. Since the detection principle of biological information using a capacitive coupling type detection device is known, detailed description thereof is omitted. Further, since the detection principle of biological information using a piezoelectric detection device is also known, detailed description thereof is omitted.
　第１検知手段１１０は、検知電極１１２に運転者６０のでん部６２を近接させる必要があるものの、検知電極１１２にでん部６２が近接していれば、運転者６０が体を多少動かしても安定して検知を行えるという利点を有している。また、第２検知手段１２０は、運転者６０が体を動かした場合には検知が不安定になり易いものの、でん部６２からの圧力が感圧素子１２２に伝達されれば、でん部６２が感圧素子１２２に近接していなくても検知できるという利点を有している。つまり、第２検知手段１２０が検知面１０２から離れていたとしても、また、検知面１０２と第２検知手段１２０との間に検知電極１１２が介在していたとしても、第２検知手段１２０に間接的に圧力が加われば検知ができる。そのため、制御装置３０が、第１検知手段１１０から伝達された電気信号と、第２検知手段１２０から伝達された電気信号と、に基づいて生体情報の算出を行うことによって、生体情報の検知漏れの可能性を低減することができる。 Although the first detection means 110 needs to bring the driver's 60 belly part 62 close to the detection electrode 112, if the staring part 62 is close to the detection electrode 112, the driver 60 moves the body somewhat. Has the advantage of being able to detect stably. In addition, the second detection means 120 is likely to become unstable when the driver 60 moves his body. However, if the pressure from the waist portion 62 is transmitted to the pressure sensitive element 122, the second portion 120 62 has the advantage that it can be detected even if it is not close to the pressure sensitive element 122. That is, even if the second detection unit 120 is separated from the detection surface 102, or even if the detection electrode 112 is interposed between the detection surface 102 and the second detection unit 120, the second detection unit 120 Detection is possible if pressure is applied indirectly. For this reason, the control device 30 calculates the biological information based on the electrical signal transmitted from the first detection unit 110 and the electrical signal transmitted from the second detection unit 120, thereby detecting the detection of biological information. The possibility of this can be reduced.
　次に、本実施形態の効果について説明する。本実施形態の生体情報検知装置１０１では、検知方法の異なる第１検知手段１１０と第２検知手段１２０とを用いて運転者６０の生体情報の検知を行っている。前述したように、第１検知手段１１０と第２検知手段１２０とでは検知に適した環境が異なるので、運転者６０の姿勢の変化や環境の変化等があった場合でも、生体情報の検知漏れを防止し易い。しかも、感圧シート１２１が検知電極１１２と運転者６０のでん部６２との間に介在していないので、感圧シート１２１が検知電極１１２とでん部６２との間の容量結合に影響を及ぼすのを防止することができる。また、検知電極１１２を薄くすることによって、運転者６０のでん部６２からの圧力を感圧シート１２１へ伝達し易くすることができ、検知電極１１２が感圧シート１２１の圧電効果に影響を及ぼすのを防止することができる。このように、生体情報検知装置１０１では、第１検知手段１１０と第２検知手段１２０とが互いに干渉し合うのを防止することができる。その結果、生体情報検知装置１０１では、生体情報の検知をより確実に行うことができる。 Next, the effect of this embodiment will be described. In the biometric information detection apparatus 101 of this embodiment, the biometric information of the driver 60 is detected using the first detection unit 110 and the second detection unit 120 having different detection methods. As described above, since the environment suitable for detection differs between the first detection unit 110 and the second detection unit 120, even if there is a change in the posture of the driver 60, a change in the environment, or the like, detection of biological information is not performed. It is easy to prevent. Moreover, since the pressure sensitive sheet 121 is not interposed between the detection electrode 112 and the driver's 60 belly part 62, the pressure sensitive sheet 121 affects the capacitive coupling between the detection electrode 112 and the belly part 62. Can be prevented. Further, by making the detection electrode 112 thinner, it is possible to easily transmit the pressure from the waist portion 62 of the driver 60 to the pressure sensitive sheet 121, and the detection electrode 112 affects the piezoelectric effect of the pressure sensitive sheet 121. Can be prevented. Thus, the biological information detection apparatus 101 can prevent the first detection unit 110 and the second detection unit 120 from interfering with each other. As a result, the biological information detection apparatus 101 can more reliably detect biological information.
　また、本実施形態の生体情報検知装置１０１では、感圧シート１２１は、着座面７４の２つの側端部に亘って延びる４つの感圧素子１２２を有している。そのため、運転者６０のでん部６２の位置が多少ずれても、圧力の検出漏れを防止し易い。その結果、生体情報検知装置１０１では、生体情報の検知を更に確実に行うことができる。 Further, in the biological information detection apparatus 101 of the present embodiment, the pressure sensitive sheet 121 has four pressure sensitive elements 122 extending over two side end portions of the seating surface 74. Therefore, even if the position of the waist portion 62 of the driver 60 is slightly deviated, it is easy to prevent the detection of pressure from being detected. As a result, the biological information detection apparatus 101 can more reliably detect biological information.
　また、本実施形態の座席７０は、運転者６０のでん部６２を下から支える着座部７３を有し、着座部７３に、生体情報検知装置１０１が配設されている。そして、着座部７３の着座面７４が、生体情報検知装置１０１の検知面１０２となっている。そのため、この構成の座席７０では、着座した運転者６０のでん部６２を通じて運転者６０の生体情報の検知を行うことができる。しかも、着座中は常にでん部６２が着座面７４に押し当てられるので、検知電極１１２とでん部６２との近接を安定させ易く、また、でん部６２からの圧力を感圧シート１２１に伝え易い。そのため、このような座席７０は、着座した運転者６０のでん部６２付近の心電や圧力変動等のような、心拍活動に関する生体情報の検知を行う場合に好適である。 In addition, the seat 70 according to the present embodiment has a seating portion 73 that supports the den 62 of the driver 60 from below, and the living body information detection device 101 is disposed in the seating portion 73. The seating surface 74 of the seating portion 73 is the detection surface 102 of the biological information detection device 101. Therefore, in the seat 70 having this configuration, the biological information of the driver 60 can be detected through the seat 62 of the driver 60 who is seated. In addition, the seat 62 is always pressed against the seating surface 74 while seated, so that the proximity of the detection electrode 112 and the seat 62 can be stabilized, and the pressure from the seat 62 is applied to the pressure sensitive sheet 121. Easy to tell. Therefore, such a seat 70 is suitable for detecting biological information related to heartbeat activity such as electrocardiogram and pressure fluctuation in the vicinity of the seat 62 of the driver 60 who is seated.
　［第３実施形態］
　以下、本発明の第３実施形態について図面を参照しながら説明する。尚、本実施形態において、前述した第１実施形態や第２実施形態と同一の構成である場合、同一符号を付して詳細な説明は省略する。 [Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. In addition, in this embodiment, when it is the same structure as 1st Embodiment mentioned above or 2nd Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
　まず、本実施形態に係る生体情報検知装置１と生体情報検知装置１０１との構成について、図９を用いて説明する。図９は、本発明の第３実施形態に係る生体情報検知装置１と生体情報検知装置１０１との配置を示す説明図である。図９（ａ）は、座席７０を前方から見た図であり、図９（ｂ）は、座席７０と運転者６０とを横から見た図である。 First, the configuration of the biological information detection apparatus 1 and the biological information detection apparatus 101 according to the present embodiment will be described with reference to FIG. FIG. 9 is an explanatory diagram showing the arrangement of the biological information detection device 1 and the biological information detection device 101 according to the third embodiment of the present invention. FIG. 9A is a view of the seat 70 viewed from the front, and FIG. 9B is a view of the seat 70 and the driver 60 viewed from the side.
　図９に示すように、本実施形態では、生体情報検知装置１と生体情報検知装置１０１とが、座席７０に配設されている。生体情報検知装置１は、第１実施形態において説明したものと同じである。生体情報検知装置１０１は、第２実施形態において説明したものと同じである。生体情報検知装置１の第１検知手段１０と第２検知手段２０とは、図示しない配線を介して、制御装置３０に接続されている。生体情報検知装置１０１の第１検知手段１１０と第２検知手段１２０とも、図示しない配線を介して、制御装置３０に接続されている。 As shown in FIG. 9, in the present embodiment, the biological information detection device 1 and the biological information detection device 101 are disposed in a seat 70. The biological information detection apparatus 1 is the same as that described in the first embodiment. The biological information detection apparatus 101 is the same as that described in the second embodiment. The 1st detection means 10 and the 2nd detection means 20 of the biometric information detection apparatus 1 are connected to the control apparatus 30 via the wiring which is not shown in figure. Both the first detection means 110 and the second detection means 120 of the biological information detection apparatus 101 are connected to the control apparatus 30 via wiring (not shown).
　このように、本実施形態では、生体情報検知装置１の第１検知手段１０と第２検知手段２０と、生体情報検知装置１０１の第１検知手段１１０と第２検知手段１２０とを、同時に備えている。 Thus, in the present embodiment, the first detection means 10 and the second detection means 20 of the biological information detection apparatus 1 and the first detection means 110 and the second detection means 120 of the biological information detection apparatus 101 are provided at the same time. ing.
　次に、本実施形態の効果について説明する。本実施形態の座席７０は、運転者６０の背中６１を後方から支える背もたれ部７１を有し、背もたれ部７１に、生体情報検知装置１が配設されている。また、座席７０は、運転者６０のでん部６２を下から支える着座部７３を有し、着座部７３に、生体情報検知装置１０１が配設されている。そのため、この構成の座席７０では、着座した運転者６０の背中６１とでん部６２とを通じて人体の生体情報の検知を行うことができる。そして、運転者６０の複数の部位を通じて生体情報の検知を行うことによって、生体情報の検知を更に確実に行うことができる。 Next, the effect of this embodiment will be described. The seat 70 of the present embodiment has a backrest portion 71 that supports the driver's 60 back 61 from behind, and the biological information detection device 1 is disposed on the backrest portion 71. Further, the seat 70 has a seating portion 73 that supports the driver's 60 seat 62 from below, and the living body information detecting device 101 is disposed in the seating portion 73. Therefore, in the seat 70 having this configuration, it is possible to detect the biological information of the human body through the back 61 and the elbow 62 of the driver 60 who is seated. And by detecting biometric information through a plurality of parts of driver 60, biometric information can be detected more reliably.
　例えば、運転者６０が前方に屈んで、背中６１が背もたれ部７１から離れても、でん部６２が着座部７３に近接していれば、生体情報の検知を継続することができる。逆に、運転者６０が腰を浮かせて、でん部６２が着座部７３から離れても、背中６１が背もたれ部７１に近接していれば、生体情報の検知を継続することができる。 For example, even if the driver 60 bends forward and the back 61 is separated from the backrest 71, the detection of the biological information can be continued if the den 62 is close to the seat 73. On the other hand, even if the driver 60 floats up and the waist 62 moves away from the seat 73, the detection of the biological information can be continued if the back 61 is close to the backrest 71.
　また、例えば、背もたれ部７１付近で発生したノイズの影響で、生体情報検知装置１の検知結果が異常値を示しても、生体情報検知装置１０１が正常に動作していれば、生体情報検知装置１０１の検知結果を使用して検知漏れを防止することができる。逆に、着座部７３付近で発生したノイズの影響で、生体情報検知装置１０１の検知結果が異常値を示しても、生体情報検知装置１が正常に動作していれば、生体情報検知装置１の検知結果を使用して検知漏れを防止することができる。 For example, even if the detection result of the biological information detection device 1 shows an abnormal value due to the influence of noise generated in the vicinity of the backrest 71, if the biological information detection device 101 is operating normally, the biological information detection device Detection failure can be prevented using the detection result 101. On the contrary, even if the detection result of the biological information detection device 101 shows an abnormal value due to the influence of noise generated near the seating portion 73, if the biological information detection device 1 is operating normally, the biological information detection device 1 Detection failure can be prevented using the detection result.
　以上、本発明の実施形態について説明してきたが、本発明は上記の実施形態に限定されず、本発明の目的の範囲を逸脱しない限りにおいて適宜変更することができる。 As mentioned above, although the embodiment of the present invention has been described, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the object of the present invention.
　例えば、本発明の第１実施形態において、生体情報検知装置１の検知面２の向きは、装置の使用状況に応じて適宜変更しても構わない。例えば、座席７０がリクライニング構造を有している場合には、検知面２は前後方向ではなく上下方向や斜め方向を向いていても構わない。また、生体情報検知装置１の検知面２は、座席７０の背もたれ面７２以外の面であっても構わない。また、生体情報検知装置１を車両の座席７０以外に配設して使用しても構わない。また、生体情報検知装置１は、運転者６０の背中６１だけを検知対象とするのではなく、運転者６０の肩や腰を検知対象としても構わない。 For example, in the first embodiment of the present invention, the orientation of the detection surface 2 of the biological information detection apparatus 1 may be changed as appropriate according to the usage status of the apparatus. For example, when the seat 70 has a reclining structure, the detection surface 2 may face the up-down direction or the diagonal direction instead of the front-rear direction. Further, the detection surface 2 of the biological information detection apparatus 1 may be a surface other than the backrest surface 72 of the seat 70. Moreover, you may arrange | position and use the biometric information detection apparatus 1 other than the seat 70 of a vehicle. In addition, the biological information detection apparatus 1 does not set only the back 61 of the driver 60 as a detection target, but may set the shoulder or waist of the driver 60 as a detection target.
　また、本発明の第１実施形態において、第１検知手段１０の検知電極１２の数は６つに限定されない。十分な検知精度が得られるのであれば、検知電極１２の数は２つであっても構わない。また、検知精度を更に向上させたい場合には、検知電極１２の数を更に増やしても構わない。また、検知電極１２は、前方から見て、検知面２の上端部や下端部に位置するように配置されていても構わない。 In the first embodiment of the present invention, the number of detection electrodes 12 of the first detection means 10 is not limited to six. If sufficient detection accuracy is obtained, the number of detection electrodes 12 may be two. If the detection accuracy is to be further improved, the number of detection electrodes 12 may be further increased. Further, the detection electrode 12 may be disposed so as to be located at the upper end portion or the lower end portion of the detection surface 2 when viewed from the front.
　また、本発明の第１実施形態において、第２検知手段２０の放射部２２の数は２つに限定されない。十分な検知精度が得られるのであれば、放射部２２の数は１つであっても構わない。また、検知精度を更に向上させたい場合には、放射部２２の数を更に増やしても構わない。 Further, in the first embodiment of the present invention, the number of the radiating portions 22 of the second detection means 20 is not limited to two. As long as sufficient detection accuracy is obtained, the number of the radiation parts 22 may be one. Further, when it is desired to further improve the detection accuracy, the number of the radiation portions 22 may be further increased.
　また、本発明の第１実施形態において、第２検知手段２０の本体部２１と放射部２２とは分離して配置されていても構わない。例えば、放射部２２は、検知シート１１の前面に検知電極１２と共に形成された電極パターンであっても構わない。そして、本体部２１は、制御装置３０と共に着座部７３の内部に配置されていても構わない。また、放射部２２を所定の位置に固定できるのであれば、取付け板２３や固定フレーム２４は無くても構わない。 In the first embodiment of the present invention, the main body 21 and the radiating part 22 of the second detection means 20 may be arranged separately. For example, the radiating portion 22 may be an electrode pattern formed together with the detection electrode 12 on the front surface of the detection sheet 11. And the main-body part 21 may be arrange | positioned inside the seating part 73 with the control apparatus 30. FIG. Further, as long as the radiating portion 22 can be fixed at a predetermined position, the mounting plate 23 and the fixing frame 24 may be omitted.
　また、本発明の第１実施形態において、第２検知手段２０は、高周波の電磁波信号を用いて運転者６０の生体情報を検知するのではなく、超音波信号を用いて運転者６０の生体情報を検知しても構わない。その場合、放射部２２は、超音波の送信信号を放射するスピーカと送信信号の運転者６０からの反射信号を受信するマイクとを組み合わせた装置となる。 In the first embodiment of the present invention, the second detection means 20 does not detect the biological information of the driver 60 using a high-frequency electromagnetic wave signal, but uses the ultrasonic signal to detect the biological information of the driver 60. May be detected. In this case, the radiating unit 22 is a device that combines a speaker that radiates an ultrasonic transmission signal and a microphone that receives a reflected signal from the driver 60 of the transmission signal.
　また、本発明の第２実施形態において、生体情報検知装置１０１の検知面１０２の向きは、装置の使用状況に応じて適宜変更しても構わない。また、生体情報検知装置１０１の検知面１０２は、座席７０の着座面７４以外の面であっても構わない。また、生体情報検知装置１０１を車両の座席７０以外に配設して使用しても構わない。また、生体情報検知装置１０１は、運転者６０のでん部６２だけを検知対象とするのではなく、運転者６０の大腿部を検知対象としても構わない。 In the second embodiment of the present invention, the orientation of the detection surface 102 of the biological information detection apparatus 101 may be changed as appropriate according to the use status of the apparatus. In addition, the detection surface 102 of the biological information detection apparatus 101 may be a surface other than the seating surface 74 of the seat 70. Further, the biological information detection apparatus 101 may be used by being disposed other than the seat 70 of the vehicle. Moreover, the biological information detection apparatus 101 does not set only the waist part 62 of the driver 60 as a detection target, but may set the thigh of the driver 60 as a detection target.
　また、本発明の第２実施形態において、第１検知手段１１０の検知電極１１２の数は２つに限定されない。検知精度を更に向上させたい場合には、検知電極１１２の数を更に増やしても構わない。 In the second embodiment of the present invention, the number of detection electrodes 112 of the first detection means 110 is not limited to two. If it is desired to further improve the detection accuracy, the number of detection electrodes 112 may be further increased.
　また、本発明の第２実施形態において、第２検知手段１２０の感圧素子１２２の数は４つに限定されない。十分な検知精度が得られるのであれば、感圧素子１２２の数は３つ以下であっても構わない。また、検知精度を更に向上させたい場合には、感圧素子１２２の数を更に増やしても構わない。また、感圧素子１２２は、検知面１０２の前端部から後端部に亘って延びていても構わない。 Also, in the second embodiment of the present invention, the number of pressure sensitive elements 122 of the second detection means 120 is not limited to four. The number of pressure sensitive elements 122 may be three or less as long as sufficient detection accuracy is obtained. Further, when it is desired to further improve the detection accuracy, the number of pressure sensitive elements 122 may be further increased. Further, the pressure sensitive element 122 may extend from the front end portion of the detection surface 102 to the rear end portion.
　また、本発明の第２実施形態において、運転者６０のでん部６２からの圧力を所定の電気信号に変換できるのであれば、第２検知手段１２０の感圧素子１２２は、図８に示す以外の構造を有した素子であっても構わない。例えば、感圧素子１２２は、でん部６２からの圧力に対応して歪み、その歪みに対応して抵抗値が変化する歪みゲージのような素子であっても構わない。また、第２検知手段１２０のでん部６２からの圧力に対応して気圧が変化する空気袋を有し、感圧素子１２２は、空気袋の気圧を検出する気圧センサのような素子であっても構わない。 Further, in the second embodiment of the present invention, the pressure sensing element 122 of the second detection means 120 is other than that shown in FIG. An element having the structure may be used. For example, the pressure-sensitive element 122 may be an element such as a strain gauge that is distorted corresponding to the pressure from the rod 62 and the resistance value changes corresponding to the distortion. The air pressure of the second detecting means 120 is changed according to the pressure from the pressure part 62, and the pressure sensing element 122 is an element such as a pressure sensor for detecting the pressure of the air bag. It doesn't matter.
　１　生体情報検知装置
　２　検知面
　１０　第１検知手段
　１１　検知シート
　１２　検知電極
　１３　接地電極
　２０　第２検知手段
　２１　本体部
　２２　放射部
　２３　取付け板
　２４　固定フレーム
　３０　制御装置
　６０　運転者
　６１　背中
　６２　でん部
　７０　座席
　７１　背もたれ部
　７２　背もたれ面
　７３　着座部
　７４　着座面
　１０１　生体情報検知装置
　１０２　検知面
　１１０　第１検知手段
　１１１　検知シート
　１１２　検知電極
　１１３　接地電極
　１２０　第２検知手段
　１２１　感圧シート
　１２２　感圧素子
　１２３　絶縁フィルム
　１２４　第１電極層
　１２５　圧電体層
　１２６　第２電極層
　１２７　クッション DESCRIPTION OF SYMBOLS 1 Biological information detection apparatus 2 Detection surface 10 1st detection means 11 Detection sheet 12 Detection electrode 13 Ground electrode 20 2nd detection means 21 Main-body part 22 Radiation part 23 Mounting plate 24 Fixed frame 30 Control apparatus 60 Driver 61 Back 62 Den Part 70 Seat 71 Backrest part 72 Backrest surface 73 Seating part 74 Seating surface 101 Biological information detection device 102 Detection surface 110 First detection means 111 Detection sheet 112 Detection electrode 113 Ground electrode 120 Second detection means 121 Pressure sensitive sheet 122 Pressure sensitive element 123 Insulating film 124 First electrode layer 125 Piezoelectric layer 126 Second electrode layer 127 Cushion

Claims (8)

  1. 　人体の生体情報を検知する生体情報検知装置であって、
    　前方に前記人体が位置するように配置された検知面と、
    　前記検知面に沿って前記検知面の後方に配置された複数の検知電極と、
    　前記検知電極と前記検知電極に近接する前記人体との間の容量結合を用いて前記人体の生体情報を検知する第１検知手段と、
    　前記人体に向けて送信信号を放射すると共にその反射信号を受信する放射部と、
    　前記送信信号と前記反射信号とを用いて前記人体の生体情報を検知する第２検知手段と、
    　を備え、
    　前記放射部は、
    　前方から見て、前記検知電極と重ならない位置に配置されていることを特徴とする生体情報検知装置。     A biological information detection device for detecting biological information of a human body,
    A detection surface arranged so that the human body is located in front of the body;
    A plurality of detection electrodes arranged behind the detection surface along the detection surface;
    First detection means for detecting biological information of the human body using capacitive coupling between the detection electrode and the human body adjacent to the detection electrode;
    A radiation unit that radiates a transmission signal toward the human body and receives the reflection signal;
    Second detection means for detecting biological information of the human body using the transmission signal and the reflected signal;
    With
    The radiation part is
    A biological information detection device, wherein the biological information detection device is disposed at a position that does not overlap the detection electrode when viewed from the front.
  2. 　前方から見て、
    　前記検知電極は、前記検知面の周辺部に位置するように配置され、
    　前記放射部は、前記検知面の中央部に位置するように配置されていることを特徴とする、
    　請求項１に記載の生体情報検知装置。     Looking from the front,
    The detection electrode is disposed so as to be located in a peripheral portion of the detection surface,
    The radiating part is disposed so as to be located in a central part of the detection surface,
    The biological information detection apparatus according to claim 1.
  3. 　前記放射部は、
    　前記検知電極よりも前方に突出しないように配置されていることを特徴とする、
    　請求項１又は請求項２に記載の生体情報検知装置。     The radiation part is
    It is arranged so as not to protrude forward from the detection electrode,
    The biological information detection apparatus according to claim 1 or 2.
  4. 　前記人体が着座する座席であって、
    　前記人体の背中を後方から支える背もたれ部を有し、
    　前記背もたれ部に、請求項１ないし請求項３のいずれかに記載の生体情報検知装置が配設され、
    　前記背もたれ部の背もたれ面が、請求項１ないし請求項３のいずれかに記載の生体情報検知装置の検知面となっていることを特徴とする座席。     A seat on which the human body is seated;
    A backrest that supports the back of the human body from behind;
    The biological information detection device according to any one of claims 1 to 3 is disposed on the backrest,
    The seat according to any one of claims 1 to 3, wherein a backrest surface of the backrest portion is a detection surface of the biological information detection device according to any one of claims 1 to 3.
  5. 　人体の生体情報を検知する生体情報検知装置であって、
    　上方に前記人体が位置するように配置された検知面と、
    　前記検知面に沿って前記検知面の下方に配置された複数の検知電極と、
    　前記検知電極と前記検知電極に近接する前記人体との間の容量結合を用いて前記人体の生体情報を検知する第１検知手段と、
    　前記人体からの圧力を検出する感圧シートと、
    　前記感圧シートが検出した圧力を用いて前記人体の生体情報を検知する第２検知手段と、
    　を備え、
    　前記感圧シートは、
    　前記検知電極の下側に配置されていることを特徴とする生体情報検知装置。     A biological information detection device for detecting biological information of a human body,
    A detection surface arranged so that the human body is located above;
    A plurality of detection electrodes arranged below the detection surface along the detection surface;
    First detection means for detecting biological information of the human body using capacitive coupling between the detection electrode and the human body adjacent to the detection electrode;
    A pressure-sensitive sheet for detecting pressure from the human body;
    Second detection means for detecting biological information of the human body using the pressure detected by the pressure sensitive sheet;
    With
    The pressure sensitive sheet is
    A biological information detection device, which is disposed below the detection electrode.
  6. 　前記検知面は、互いに対向する２つの側端部を有し、
    　前記感圧シートは、前記２つの側端部に亘って延びる複数の感圧素子を有していることを特徴とする、
    　請求項５記載の生体情報検知装置。     The detection surface has two side end portions facing each other,
    The pressure-sensitive sheet has a plurality of pressure-sensitive elements extending over the two side ends,
    The biological information detection apparatus according to claim 5.
  7. 　前記人体が着座する座席であって、
    　前記人体のでん部を下から支える着座部を有し、
    　前記着座部に、請求項５又は請求項６に記載の生体情報検知装置が配設され、
    　前記着座部の着座面が、請求項５又は請求項６に記載の生体情報検知装置の検知面となっていることを特徴とする座席。     A seat on which the human body is seated;
    It has a seating part that supports the human body from the bottom,
    The living body information detection device according to claim 5 or claim 6 is disposed in the seating portion,
    The seat characterized by the seating surface of the said seating part becoming the detection surface of the biometric information detection apparatus of Claim 5 or Claim 6.
  8. 　前記人体が着座する座席であって、
    　前記人体の背中を後方から支える背もたれ部と、
    　前記人体のでん部を下から支える着座部と、を有し、
    　前記背もたれ部に、請求項１ないし請求項３のいずれかに記載の生体情報検知装置が配設され、
    　前記背もたれ部の背もたれ面が、請求項１ないし請求項３のいずれかに記載の生体情報検知装置の検知面となり、
    　前記着座部に、請求項５又は請求項６に記載の生体情報検知装置が配設され、
    　前記着座部の着座面が、請求項５又は請求項６に記載の生体情報検知装置の検知面となっていることを特徴とする座席。     A seat on which the human body is seated;
    A backrest that supports the back of the human body from behind;
    And a seating part that supports the human body's dent part from below,
    The biological information detection device according to any one of claims 1 to 3 is disposed on the backrest,
    The backrest surface of the backrest portion serves as a detection surface of the biological information detection device according to any one of claims 1 to 3,
    The living body information detection device according to claim 5 or claim 6 is disposed in the seating portion,
    The seat characterized by the seating surface of the said seating part becoming the detection surface of the biometric information detection apparatus of Claim 5 or Claim 6.
PCT/JP2014/074846 2013-09-27 2014-09-19 Biological-information detection device and seat equipped with biological-information detection device WO2015046055A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-201937 2013-09-27
JP2013201937A JP2016198121A (en) 2013-09-27 2013-09-27 Biological information detection device and seat with biological information detection device

Publications (1)

Publication Number Publication Date
WO2015046055A1 true WO2015046055A1 (en) 2015-04-02

Family

ID=52743192

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/074846 WO2015046055A1 (en) 2013-09-27 2014-09-19 Biological-information detection device and seat equipped with biological-information detection device

Country Status (2)

Country Link
JP (1) JP2016198121A (en)
WO (1) WO2015046055A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110461223A (en) * 2017-04-03 2019-11-15 提爱思科技股份有限公司 The arrangement of biosensor
US20230045261A1 (en) * 2017-04-03 2023-02-09 Ts Tech Co., Ltd. Arrangement structure for biological sensors

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018175831A (en) * 2017-04-03 2018-11-15 テイ・エス テック株式会社 Arrangement structure of biological sensor
JP2019180451A (en) * 2018-04-02 2019-10-24 テイ・エス テック株式会社 Arrangement structure of biological sensor and seat
JP7315875B2 (en) * 2017-04-03 2023-07-27 テイ・エス テック株式会社 vehicle seat
JP7057497B2 (en) * 2018-04-27 2022-04-20 テイ・エス テック株式会社 Biometric information detection system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030233034A1 (en) * 2002-06-13 2003-12-18 Alpo Varri Apparatus for measuring vital functions
JP2008541977A (en) * 2005-06-07 2008-11-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Patient monitoring system and method
JP2009072396A (en) * 2007-09-21 2009-04-09 Hiroshima Industrial Promotion Organization Bioinformation detecting device of bed mattress
JP2010046310A (en) * 2008-08-22 2010-03-04 Toyota Motor Corp Electrocardiographic device for vehicle
WO2010125705A1 (en) * 2009-04-30 2010-11-04 株式会社村田製作所 Biosensor device
WO2013037399A1 (en) * 2011-09-12 2013-03-21 Ficomirrors, S.A. System and method for detecting a vital-related signal pattern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030233034A1 (en) * 2002-06-13 2003-12-18 Alpo Varri Apparatus for measuring vital functions
JP2008541977A (en) * 2005-06-07 2008-11-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Patient monitoring system and method
JP2009072396A (en) * 2007-09-21 2009-04-09 Hiroshima Industrial Promotion Organization Bioinformation detecting device of bed mattress
JP2010046310A (en) * 2008-08-22 2010-03-04 Toyota Motor Corp Electrocardiographic device for vehicle
WO2010125705A1 (en) * 2009-04-30 2010-11-04 株式会社村田製作所 Biosensor device
WO2013037399A1 (en) * 2011-09-12 2013-03-21 Ficomirrors, S.A. System and method for detecting a vital-related signal pattern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110461223A (en) * 2017-04-03 2019-11-15 提爱思科技股份有限公司 The arrangement of biosensor
US11505090B2 (en) 2017-04-03 2022-11-22 Ts Tech Co., Ltd. Arrangement structure for biological sensors
US20230045261A1 (en) * 2017-04-03 2023-02-09 Ts Tech Co., Ltd. Arrangement structure for biological sensors

Also Published As

Publication number Publication date
JP2016198121A (en) 2016-12-01

Similar Documents

Publication Publication Date Title
WO2015046055A1 (en) Biological-information detection device and seat equipped with biological-information detection device
US20150265200A1 (en) Safety belt arrangements and methods for determining information with respect to the cardiac and/or respiratory activity of a user of a safety belt
US20190223740A1 (en) Vital information measurement device and vehicle seat
JP6475680B2 (en) Biological information measuring device
US9975452B2 (en) Seat having capacitive coupling sensor
AU2006262309A1 (en) Acoustic sensor
CN108351411B (en) Ultrasound system including an interference analyzer for providing ultrasound images of a volumetric region at variable frequencies
US8665103B2 (en) Seat having occupant detecting function and occupant detection device
WO2018180398A1 (en) Seating sensor, seat, and waveform analysis device
WO2014205233A2 (en) Ultrasound transducer and method for manufacturing an ultrasound transducer
JP2001260698A (en) Cardiac respiratory detecting device
JP5637108B2 (en) ECG measurement device for vehicles
JP2016019588A (en) Biological signal detector
KR101768142B1 (en) Apparatus for measuring bio signal and method for controlling thereof
WO2018189970A1 (en) Biological information detection system and biological information detection method
US20180000422A1 (en) Biological information detection device and chair including biological information detection device
JP6411264B2 (en) Sheet
EP2772316A2 (en) Ultrasonic transducer device, head unit, probe, and ultrasonic imaging apparatus
JP2023024251A (en) vehicle seat
JP6617591B2 (en) Biological information detection device
JP5573810B2 (en) ECG measurement device for vehicles
US11911114B2 (en) Ultrasonic probe and ultrasonic imaging apparatus including the same
JP7421079B2 (en) vehicle seat
JP6733141B2 (en) Deformation detection sensor, input device
WO2023008512A1 (en) Vehicle seat

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14846880

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14846880

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP