WO2021171833A1 - 電気信号計測装置及び電気信号計測システム - Google Patents

電気信号計測装置及び電気信号計測システム Download PDF

Info

Publication number
WO2021171833A1
WO2021171833A1 PCT/JP2021/001584 JP2021001584W WO2021171833A1 WO 2021171833 A1 WO2021171833 A1 WO 2021171833A1 JP 2021001584 W JP2021001584 W JP 2021001584W WO 2021171833 A1 WO2021171833 A1 WO 2021171833A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric signal
electrode
signal measuring
filter unit
unit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/001584
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
祐大 近藤
一成 吉藤
僚 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Group Corp
Original Assignee
Sony Group Corp
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 Sony Group Corp filed Critical Sony Group Corp
Priority to JP2022503152A priority Critical patent/JP7666498B2/ja
Publication of WO2021171833A1 publication Critical patent/WO2021171833A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/369—Electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0531—Measuring skin impedance

Definitions

  • This technology relates to an electric signal measuring device and an electric signal measuring system.
  • a technique for estimating the emotion of a living body has been used. Further, it is known that it is effective to measure a plurality of modes of electric signals in order to estimate the emotion of a living body. As an example, it is known that the emotion of a living body can be estimated by measuring an electroencephalogram (EEG) signal and a skin electrical activity (EDA) signal. Therefore, it is expected to realize a device capable of measuring a plurality of modes of electric signals.
  • EEG electroencephalogram
  • EDA skin electrical activity
  • An emotion recognition system including an emotion recognition device that recognizes the emotional state of the user by monitoring the biological signal for a short time is disclosed.
  • the reference potential of the human body is based on the midpoint potential between the potentials of the two electrodes for measuring the potential of the human body and the reference potential of the differential amplifier using the potential of each electrode as an input signal.
  • a reference for measuring bioelectric signals which comprises a reference potential stabilizing circuit that matches the reference potential of the differential amplifier with the reference potential of the differential amplifier, and a short-circuit circuit that short-circuits the midpoint potential to the reference potential of the differential amplifier.
  • “Potential stabilizer” is disclosed.
  • Patent Document 3 in a skin electrical activity measuring device configured to reduce the influence of a polarization voltage generated between a measuring electrode and a measuring object, the measuring object is passed through the measuring electrode.
  • a DC power supply that supplies a DC signal, a first electrode and a second electrode that constitute the measurement electrode for detecting the skin electrical activity of the measurement object by the DC signal from the DC power supply, and the DC power supply.
  • the DC power supply and the first A first signal path through which signals flow in the order of the electrodes and the second electrode, and a second signal path through which signals flow in the order of the DC power supply, the second electrode, and the first electrode are configured.
  • a skin electrical activity measuring device characterized by performing a switching operation of switching between the first signal path and the second signal path at a predetermined cycle is disclosed.
  • the main purpose of this technology is to provide an electric signal measuring device and an electric signal measuring system that measure a plurality of types of electric signals with high accuracy.
  • a plurality of electrodes for applying an electric signal to a living body and / or detecting the electric signal from the living body, and a plurality of electric signal measuring units for measuring the electric signal detected by the electrodes.
  • a reference potential and a filter unit, each of the plurality of electrical signal measurement units is connected to the reference potential, and the filter unit has at least one electrode and at least one.
  • an electric signal measuring device connected to the electric signal measuring unit.
  • the filter unit may be connected between at least one of the electrodes and at least two or more of the electrical signal measurement units.
  • the filter unit may reduce the electric signal in a predetermined frequency band included in the electric signal.
  • the filter unit may reduce the electric signal of the DC component contained in the electric signal.
  • the filter unit may have a resistor and / or a capacitor.
  • the electrode may include a detection electrode, a reference electrode, or an application electrode.
  • the filter unit may be connected between at least one application electrode and at least one electric signal measurement unit.
  • the filter unit may be connected between at least one application electrode and at least two or more electric signal measurement units.
  • the filter unit may be connected between at least one reference electrode or the detection electrode and at least one electric signal measurement unit.
  • the present technology includes an electrode that applies an electric signal to a living body and / or detects the electric signal from the living body, and a plurality of electric signal measuring units that measure the electric signal detected by the electrode.
  • each of the plurality of electric signal measuring units is connected to the reference potential, and the filter unit has at least one of the electrodes and at least one of the electricity.
  • an electric signal measurement system connected to a signal measurement unit.
  • substantially parallel means not only completely parallel, but also substantially parallel, that is, including a difference of, for example, about several percent.
  • substantially parallel means not only completely parallel, but also substantially parallel, that is, including a difference of, for example, about several percent.
  • each figure is a schematic view and is not necessarily exactly illustrated.
  • FIG. 1 is a block diagram showing a configuration of an electric signal measuring device according to the present embodiment.
  • the electric signal measuring device 1000 includes a first electrode 101, a second electrode 102, a third electrode 103, a fourth electrode 104, and a fifth electrode 105. It is provided with at least a plurality of electrodes, a plurality of electric signal measurement units including a first electric signal measurement unit 300 and a second electric signal measurement unit 400, a reference potential GND, and a filter unit 201.
  • Each of the plurality of electrodes 101 to 105 is arranged at a position in contact with the skin surface of the living body S or at a position close to the skin surface of the living body S.
  • Each of the plurality of electrodes 101 to 105 can apply an electric signal to the living body S and / or detect the electric signal from the living body S.
  • the number of the plurality of electrodes is not limited to five.
  • Each of the plurality of electric signal measuring units 300 and 400 is electrically connected to each of the plurality of electrodes 101 to 105.
  • Each of the plurality of electric signal measuring units 300 and 400 transmits an electric signal to, for example, the third electrode 103 and the fourth electrode 104.
  • the third electrode 103 and the fourth electrode 104 apply an electric signal to the living body S.
  • the common mode noise can be reduced by inverting and amplifying the component corresponding to the common mode noise and returning it to the living body. Therefore, the third electrode 103 and the fourth electrode 104 apply an electric signal to the living body S.
  • the first electrode 101, the second electrode 102, and the fifth electrode 105 detect an electric signal from the living body S.
  • Each of the plurality of electric signal measuring units 300 and 400 measures the detected electric signal.
  • the electric signal measured by each of the plurality of electric signal measuring units 300 and 400 the brain wave (EEG) signal, the electrocardiogram (ECG) signal, the electrocardiogram (MCG) signal, the electrocardiogram (MEG) signal, and the surface electromyogram There are (EMG) signals, eye potential map (EOG) signals, skin electrical activity (EDA) signals and the like.
  • EEG brain wave
  • ECG electrocardiogram
  • MCG electrocardiogram
  • MEG electrocardiogram
  • EMG surface electromyogram
  • EMG eye potential map
  • EDA skin electrical activity
  • the first electric signal measurement unit 300 has a first power supply 301.
  • the second electric signal measurement unit 400 has a second power supply 401.
  • the first power supply 301 and the second power supply 401 are connected to one reference potential GND. Thereby, it is possible to realize that one electric signal measuring device 1000 can measure a plurality of types of electric signals. A plurality of modes of electric signals are measured with reference to this reference potential GND.
  • the filter unit 201 is connected between at least one of the electrodes and at least one of the electrical signal measurement units. In the present embodiment, the filter unit 201 is connected between the third electrode 103 and the first electric signal measurement unit 300. The filter unit 201 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the first electric signal measuring unit 300.
  • the processing flow performed by the electric signal measuring device 1000 will be specifically described.
  • the first electric signal measuring unit 300 transmits an electric signal to the third electrode 103.
  • the third electrode 103 applies an electric signal (voltage) to the skin surface of the living body S. As a result, this electric signal flows into the first electrode 101 and the second electrode 102 through the living body S.
  • the first electrode 101 and the second electrode 102 detect this electric signal.
  • the first electric signal measuring unit 300 can obtain biological information by measuring the detected electric signal.
  • the second electric signal measuring unit 400 transmits an electric signal to the fourth electrode 104.
  • the fourth electrode 104 applies an electric signal to the skin surface of the living body S.
  • the fifth electrode 105 detects an electric signal from the living body S.
  • the second electric signal measuring unit 400 can obtain biological information by measuring the detected electric signal.
  • the filter unit 201 is not provided, for example, an electric signal applied to the living body S by the third electrode 103 may flow into the fifth electrode 105.
  • the second electric signal measuring unit 400 may not be able to obtain accurate biometric information.
  • EDA skin electrical activity
  • the filter unit 201 can reduce the electric signal in a predetermined frequency band included in the electric signal transmitted by the first electric signal measuring unit 300. As a result, for example, the electric signal applied to the living body S by the third electrode 103 is prevented from flowing into the fifth electrode 105. Therefore, the second electric signal measuring unit 400 can measure the electric signal with high accuracy.
  • the filter unit 201 may include, for example, a resistor, a capacitor, a coil, a ferrite bead, a diode, or the like.
  • the resistor includes a variable resistor.
  • the filter unit 201 may be a material whose passive characteristics have been obtained by using an arbitrary material.
  • the filter unit 201 may be made of a material having a resistance component such as a pressure-sensitive resistance sheet.
  • the measurement target is not limited to the living body.
  • a solid, a liquid, a gas, or the like having arbitrary circuit characteristics may be the object of measurement.
  • FIG. 2 is a circuit diagram showing a circuit configuration of the electric signal measuring device according to the present embodiment.
  • the electric signal measuring device 1001 includes a plurality of electrodes including an electrode 106, an electrode 107, an electrode 108, an electrode 109, and an electrode 110, and an electric signal measuring unit 310 and an electric signal measuring unit. It includes at least a plurality of electric signal measuring units including 410, a reference potential GND, and a filter unit 204.
  • the electrodes 106 and 110 are detection electrodes that detect, for example, an electric signal from the living body S.
  • the electrode 107 is a reference electrode that serves as a reference for the electric potential of the electric signal.
  • the electrode 108 and the electrode 109 are application electrodes for applying an electric signal to the living body S.
  • the application electrode is not limited to the one by the voltage source, but also includes the one by the current source.
  • the electric signal measurement unit 310 has an instrumentation amplifier 311, an operational amplifier 312, and a power supply 313.
  • the electrical signal measuring unit 310 measures, for example, an electroencephalogram (EEG) signal.
  • EEG electroencephalogram
  • a capacitor 202 is connected between the instrumentation amplifier 311 and the electrode 106.
  • a capacitor 203 is connected between the instrumentation amplifier 311 and the electrode 107. The capacitor 202 and the capacitor 203 can reduce the electric signal of a predetermined frequency band included in the electric signal.
  • the electric signal measurement unit 410 has an operational amplifier 411, an operational amplifier 412, an operational amplifier 413, a power supply 414, and a power supply 415.
  • the electrical signal measuring unit 410 measures, for example, a skin electrical activity (EDA) signal.
  • EDA skin electrical activity
  • the electric signal measurement unit 310 is connected to the AD converter 501.
  • the electric signal measuring unit 410 is connected to the AD converter 502.
  • the AD converter 501 converts the electric signal of the analog signal measured by the electric signal measuring unit 310 into a digital signal.
  • the AD converter 502 converts the electric signal of the analog signal measured by the electric signal measuring unit 410 into a digital signal.
  • the power supply 313, power supply 414, and power supply 415 are connected to the reference potential GND.
  • one electric signal measuring device 1001 can measure an electroencephalogram (EEG) signal and a skin electric activity (EDA) signal.
  • EEG electroencephalogram
  • EDA skin electric activity
  • the filter unit 204 is connected between at least one application electrode and at least one electric signal measurement unit. In this embodiment, the filter unit 204 is connected between the application electrode 108 and the electric signal measurement unit 310.
  • the filter unit 204 may be, for example, a capacitor.
  • the capacitor 204 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the electric signal measuring unit 310.
  • the electric signal measuring unit 310 measures the potential that is the midpoint between the electric signal detected by the detection electrode 106 and the electric signal detected by the reference electrode 107.
  • the electric signal measuring unit 410 measures the potential of the electric signal detected by the detection electrode 110.
  • the electric signal applied by the application electrode 108 to the living body S is an electric signal in which the DC (direct current) component generated in the circuit is superimposed on the AC (alternating current) component of the opposite phase of the common mode noise.
  • the electric signal of this DC component adversely affects the measurement of the skin electric activity (EDA) signal of the DC method by the electric signal measuring unit 410.
  • the detection electrode 110 detects the electric signal from the living body S
  • the detection electrode 110 may also detect the electric signal of the DC component applied to the living body S by the applied electrode 108. Therefore, this electric signal becomes noise, and the electric signal measuring unit 410 may not be able to accurately measure the skin electrical activity (EDA) signal.
  • the capacitor 204 which is a filter unit, can reduce the electric signal in a predetermined frequency band included in the electric signal transmitted by the electric signal measuring unit 310. Further, the capacitor 204, which is a filter unit, can remove the electric signal of the DC component (0 Hz component) included in the electric signal transmitted by the electric signal measuring unit 310. As a result, the detection electrode 110 can detect only the electric signal from the living body S. Therefore, the electric signal measuring unit 410 can measure the skin electrical activity (EDA) signal with high accuracy.
  • EDA skin electrical activity
  • FIG. 3 is a circuit diagram showing a circuit configuration of the electric signal measuring device according to the present embodiment. The difference from FIG. 2 will be mainly described.
  • the electric signal measuring device 1002 includes a plurality of electrodes including an electrode 111, an electrode 112, an electrode 113, an electrode 114, and an electrode 115, and an electric signal measuring unit 320 and an electric signal measuring unit. It includes at least a plurality of electric signal measuring units including 330, a reference potential GND, and a plurality of filter units including a filter unit 207 and a filter unit 210.
  • the electrodes 111 and 114 are detection electrodes that detect, for example, an electric signal from the living body S.
  • the electrode 112 and the electrode 115 are reference electrodes that serve as a reference for the electric potential of the electric signal.
  • the electrodes 113 and 116 are application electrodes that apply an electric signal to the living body S.
  • Each of the electric signal measuring unit 320 and the electric signal measuring unit 330 has the same configuration because it measures the same type of electric signal. That is, the electric signal measurement unit 320 has an instrumentation amplifier 321, an operational amplifier 322, and a power supply 323.
  • the electric signal measurement unit 330 includes an instrumentation amplifier 331, an operational amplifier 332, and a power supply 333.
  • Each of the electric signal measuring unit 320 and the electric signal measuring unit 330 can measure, for example, an electroencephalogram (EEG) signal.
  • EEG electroencephalogram
  • a capacitor 205 is connected between the instrumentation amplifier 321 and the electrode 111.
  • a capacitor 206 is connected between the instrumentation amplifier 321 and the electrode 112.
  • a capacitor 208 is connected between the instrumentation amplifier 331 and the electrode 114.
  • a capacitor 209 is connected between the instrumentation amplifier 331 and the electrode 115.
  • the electric signal measurement unit 320 is connected to the AD converter 503.
  • the electric signal measurement unit 330 is connected to the AD converter 504.
  • the electric signal measuring unit 320 measures the potential that is the midpoint between the electric signal detected by the electrode 111 which is the detection electrode and the electric signal detected by the electrode 112 which is the reference electrode.
  • the electric signal measuring unit 330 measures the potential that is the midpoint between the electric signal detected by the electrode 114, which is the detection electrode, and the electric signal detected by the electrode 115, which is the reference electrode.
  • Each of the filter unit 207 and the filter unit 208 is connected between at least one application electrode and at least one electric signal measurement unit.
  • the filter unit 207 is connected between the application electrode 113 and the electric signal measurement unit 320.
  • the filter unit 210 is connected between the application electrode 116 and the electric signal measurement unit 330.
  • Each of the filter unit 207 and the filter unit 208 may be, for example, a resistor. With such a configuration of the electric signal measuring device 1002, the resistance ratio of the resistors 207 and 210 can be designed so that the effect of removing common mode noise is enhanced. Each of the resistor 207 and the resistor 210 may be a variable resistor whose resistance value changes.
  • the electric signal measuring device 1002 since the electric signal measuring device 1002 has such a configuration, the Tepnan theorem can be applied. Therefore, by adjusting the resistance ratio of the resistor 207 and the resistor 210, it becomes easy to adjust the amount of the electric signal applied by the application electrode 113 and the application electrode 116.
  • FIG. 4 is a block diagram showing a configuration of an electric signal measuring device according to the present embodiment. Differences from the first embodiment will be mainly described.
  • the electric signal measuring device 2000 includes a plurality of electrodes including a first electrode 117, a second electrode 118, a third electrode 119, and a fourth electrode 120. It includes at least a plurality of electric signal measuring units including a first electric signal measuring unit 600 and a second electric signal measuring unit 700, a reference potential GND, and a filter unit 211.
  • one electric signal measuring device measures electric signals of a plurality of modes
  • EEG electroencephalogram
  • at least three or more electrodes detection electrode, reference electrode, and application electrode
  • at least two or more electrodes are required to measure the skin electrical activity (EDA) signal. Therefore, when one electrical signal measuring device measures an electroencephalogram (EEG) signal and a skin electrical activity (EDA) signal, at least five or more electrodes are required.
  • an optimum electrode placement position for the measurement for each style there may be an electrode placement position on the skin surface of the living body, which is optimal for measuring an electroencephalogram (EEG) signal, and an electrode placement position on the skin surface of the living body, which is optimal for measuring a skin electrical activity (EDA) signal.
  • EEG electroencephalogram
  • EDA skin electrical activity
  • the optimum placement position for measuring electroencephalogram (EEG) signals and the optimum placement position for measuring skin electrical activity (EDA) signals are the same.
  • EEG electroencephalogram
  • EDA skin electrical activity
  • the third electrode 119 is shared by the first electric signal measuring unit 600 and the second electric signal measuring unit 700.
  • the third electrode 119 is connected to the first electric signal measuring unit 600 and at the same time connected to the second electric signal measuring unit 700.
  • a filter unit 211 is connected between the third electrode 119 and the first electric signal measurement unit 600. That is, the filter unit 211 is connected between at least one of the electrodes and at least two or more of the electrical signal measurement units.
  • the filter unit 211 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the first electric signal measuring unit 600. As a result, for example, the electric signal applied to the living body S by the third electrode 119 is prevented from flowing into the fourth electrode 120. Therefore, the second electric signal measuring unit 700 can measure the electric signal with high accuracy.
  • each of the plurality of electrodes is reduced by sharing the third electrode 119 with the first electric signal measuring unit 600 and the second electric signal measuring unit 700. Therefore, it can contribute to the miniaturization of the electric signal measuring device. Further, each of the plurality of electrodes can be arranged at an optimum position on the skin surface of the living body.
  • FIG. 5 is a circuit diagram showing a circuit configuration of the electric signal measuring device according to the present embodiment. The difference from FIG. 2 will be mainly described.
  • the electrodes 121 and 124 are detection electrodes that detect, for example, an electric signal from the living body S.
  • the electrode 122 is a reference electrode that serves as a reference for the electric potential of the electric signal.
  • the electrode 123 is an application electrode that applies an electric signal to the living body S.
  • the electrode 123 is shared by the electric signal measurement unit 610 and the electric signal measurement unit 710.
  • the electrode 123 is connected to the electric signal measuring unit 610 and at the same time connected to the electric signal measuring unit 710.
  • a filter unit 214 is connected between the electrode 119 and the electric signal measurement unit 610. That is, the filter unit 214 is connected between at least one application electrode and at least two or more electric signal measurement units.
  • the filter unit 214 may be, for example, a capacitor.
  • the capacitor 214 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the electric signal measuring unit 610.
  • the electric signal measuring device 2001 has such a configuration, for example, the electric signal applied to the living body S by the electric signal measuring unit 710 via the electrode 123 is reduced from flowing into the electrode 121 or the electrode 122. Therefore, the electric signal measuring unit 610 can measure the electric signal with high accuracy.
  • each of the plurality of electrodes can be arranged at an optimum position on the skin surface of the living body.
  • FIG. 6 is a circuit diagram showing a circuit configuration of the electric signal measuring device according to the present embodiment. The difference from FIG. 5 will be mainly described.
  • the electrode 125 is, for example, a detection electrode that detects an electric signal from the living body S.
  • the electrode 126 is both a reference electrode and a detection electrode that serve as a reference for the electric potential of the electric signal.
  • the electrode 127 is an application electrode that applies an electric signal to the living body S.
  • the electrode 127 is shared by the electric signal measurement unit 620 and the electric signal measurement unit 720.
  • the electrode 127 is connected to the electric signal measuring unit 620 and at the same time connected to the electric signal measuring unit 720. Further, a filter unit 217 is connected between the electrode 127 and the electric signal measurement unit 620.
  • the electrode 126 is shared by the electric signal measuring unit 620 and the electric signal measuring unit 720.
  • the electrode 126 is connected to the electric signal measuring unit 620 and at the same time connected to the electric signal measuring unit 720.
  • a filter unit 218 is connected between the electrode 126 and the electric signal measurement unit 720. That is, the filter unit 218 is connected between at least one reference electrode and at least two or more electric signal measurement units.
  • the filter unit 217 may be, for example, a capacitor.
  • the filter unit 217 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the electric signal measuring unit 620.
  • the filter unit 218 has, for example, a resistor and a capacitor, and can function as, for example, a low-pass filter or the like.
  • the resistors and capacitors may be connected in series or in parallel. Alternatively, the resistors and capacitors may be connected in a configuration such as a delta type or a star type.
  • the filter unit 218 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the electric signal measuring unit 620.
  • the filter unit 218 can reduce the electric signal of a predetermined frequency band included in the electric signal detected by the electrode 126. As a result, it is possible to prevent the electroencephalogram (EEG) signal related to the electric signal measuring unit 620 detected by the electrode 126 from flowing into the electric signal measuring unit 720.
  • EEG electroencephalogram
  • the electrical signal measuring device 2002 has the same number of electrodes as the electrical signal measuring device that measures only the electroencephalogram (EEG) signal, but the electroencephalogram (EEG) signal and the skin electrical activity (EDA). Signals can be measured at the same time.
  • the electric signal measuring unit 620 and the electric signal measuring unit 720 may share the electrode 125.
  • the filter unit 218 is connected between at least one detection electrode and at least two or more electric signal measurement units.
  • FIG. 7 is a block diagram showing a configuration of an electric signal measurement system according to the present embodiment.
  • the electric signal measurement system 3000 includes a first electrode 128, a second electrode 129, a third electrode 130, a fourth electrode 131, and a fifth electrode 132. It is provided with at least a plurality of electrodes, a plurality of electric signal measurement units including a first electric signal measurement unit 800 and a second electric signal measurement unit 900, a reference potential GND, and a filter unit 219.
  • Each of the plurality of electrodes 128 to 132 is arranged at a position in contact with the skin surface of the living body S or at a position close to the skin surface of the living body S.
  • Each of the plurality of electrodes 128 to 132 can apply an electric signal to the living body S and / or detect the electric signal from the living body S.
  • the number of the plurality of electrodes is not limited to five.
  • Each of the plurality of electric signal measuring units 800 and 900 is electrically connected to each of the plurality of electrodes 128 to 132.
  • Each of the plurality of electric signal measuring units 800 and 900 transmits an electric signal to, for example, the third electrode 130 and the fourth electrode 131.
  • the third electrode 130 and the fourth electrode 131 apply an electric signal to the living body S.
  • the first electrode 128, the second electrode 129, and the fifth electrode 132 detect an electric signal from the living body S.
  • Each of the plurality of electric signal measuring units 800 and 900 measures the detected electric signal.
  • the electric signal measured by each of the plurality of electric signal measuring units 800 and 900 the brain wave (EEG) signal, the electrocardiogram (ECG) signal, the electrocardiogram (MCG) signal, the electrocardiogram (MEG) signal, and the surface electromyogram There are (EMG) signals, eye potential map (EOG) signals, skin electrical activity (EDA) signals and the like.
  • EMG brain wave
  • ECG electrocardiogram
  • MCG electrocardiogram
  • MEG electrocardiogram
  • EMG surface electromyogram
  • EMG eye potential map
  • EDA skin electrical activity
  • the first electric signal measurement unit 800 has a first power supply 801.
  • the second electric signal measuring unit 900 has a second power supply 901.
  • the first power supply 801 and the second power supply 901 are connected to one reference potential GND. Thereby, it is possible to realize that one electric signal measurement system 3000 can measure a plurality of types of electric signals. A plurality of modes of electric signals are measured with reference to this reference potential GND.
  • the filter unit 219 is connected between at least one of the electrodes and at least one of the electrical signal measurement units. In the present embodiment, the filter unit 219 is connected between the third electrode 130 and the first electric signal measurement unit 800. The filter unit 219 can reduce the electric signal of a predetermined frequency band included in the electric signal transmitted by the first electric signal measuring unit 800.
  • the electric signal measurement system 3000 can utilize the techniques described in the first and second embodiments. Therefore, the description will be omitted again.
  • the present technology can also have the following configurations.
  • the filter unit is connected between at least one of the electrodes and at least two or more of the electrical signal measurement units.
  • the electric signal measuring device according to [1].
  • the filter unit reduces the electric signal in a predetermined frequency band included in the electric signal.
  • the filter unit reduces the electric signal of the DC component contained in the electric signal.
  • the electric signal measuring device according to any one of [1] to [3].
  • the filter unit has a resistor and / or a capacitor.
  • the electrode includes a detection electrode, a reference electrode, or an application electrode.
  • the filter unit is connected between at least one application electrode and at least one electric signal measurement unit.
  • the filter unit is connected between at least one application electrode and at least two or more electric signal measurement units.
  • the filter unit is connected between at least one reference electrode or detection electrode and at least one electric signal measurement unit.
  • the electric signal measuring device according to any one of [6] to [8].
  • An electrode that applies an electrical signal to a living body and / or detects the electrical signal from the living body, and A plurality of electric signal measuring units for measuring the electric signal detected by the electrode, and With reference potential It has at least a filter part, Each of the plurality of electric signal measuring units is connected to the reference potential.
  • An electric signal measurement system in which the filter unit is connected between at least one electrode and at least one electric signal measurement unit.
  • S Living body 101-132: Electrodes 300, 310, 320, 330, 410, 600, 610, 620, 700, 710, 720, 800, 900: Electrical signal measurement unit GND: Reference potential 201, 204, 207, 210, 211, 214, 217, 218, 219: Filter unit 1000, 1001, 1002, 2000, 2001, 2002: Electric signal measuring device 3000: Electric signal measuring system

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Psychiatry (AREA)
  • Psychology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Dermatology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
PCT/JP2021/001584 2020-02-28 2021-01-19 電気信号計測装置及び電気信号計測システム Ceased WO2021171833A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022503152A JP7666498B2 (ja) 2020-02-28 2021-01-19 電気信号計測装置及び電気信号計測システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020033214 2020-02-28
JP2020-033214 2020-02-28

Publications (1)

Publication Number Publication Date
WO2021171833A1 true WO2021171833A1 (ja) 2021-09-02

Family

ID=77490894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/001584 Ceased WO2021171833A1 (ja) 2020-02-28 2021-01-19 電気信号計測装置及び電気信号計測システム

Country Status (2)

Country Link
JP (1) JP7666498B2 (https=)
WO (1) WO2021171833A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024257343A1 (ja) * 2023-06-16 2024-12-19 日本電信電話株式会社 生体信号計測システム
WO2025225341A1 (ja) * 2024-04-23 2025-10-30 株式会社村田製作所 生体信号取得システム及び生体信号取得方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827544A (ja) * 1981-08-10 1983-02-18 住友電気工業株式会社 多項目患者モニタ−を有する測定装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014185532A1 (ja) * 2013-05-17 2014-11-20 テイ・エス テック株式会社 生体情報計測装置及び乗り物用シート
JP7303534B2 (ja) 2019-02-21 2023-07-05 学校法人立命館 スマートウェア

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827544A (ja) * 1981-08-10 1983-02-18 住友電気工業株式会社 多項目患者モニタ−を有する測定装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024257343A1 (ja) * 2023-06-16 2024-12-19 日本電信電話株式会社 生体信号計測システム
WO2025225341A1 (ja) * 2024-04-23 2025-10-30 株式会社村田製作所 生体信号取得システム及び生体信号取得方法

Also Published As

Publication number Publication date
JP7666498B2 (ja) 2025-04-22
JPWO2021171833A1 (https=) 2021-09-02

Similar Documents

Publication Publication Date Title
EP2843833B1 (en) Reconfigurable measuring apparatus and method for controlling apparatus
US10660575B2 (en) Ultra high impedance sensor with applications in neurosensing
CN101965681B (zh) 浮动前置放大器和单线测量设备
JP4415215B2 (ja) 干渉の存在下での生体電気インピーダンス測定システムおよび方法
US10016144B2 (en) Biological signal acquisition device and method for acquiring biological signal
US9291654B2 (en) Patient electrode impedance measurement
US10194869B2 (en) Apparatus and method for measuring biosignals
JP7039002B2 (ja) ウェアラブル生体センサ及びノイズキャンセル回路
CN106572800B (zh) 同时阻抗测试方法和装置
JP2007082938A (ja) 心電図計測装置
Haberman et al. A multichannel EEG acquisition scheme based on single ended amplifiers and digital DRL
Tang et al. A TDM-based 16-channel AFE ASIC with enhanced system-level CMRR for wearable EEG recording with dry electrodes
WO2021171833A1 (ja) 電気信号計測装置及び電気信号計測システム
EP3886690A1 (en) Contactless electrode for sensing physiological electrical activity
EP1761789A1 (en) A sensor system for measuring an electric potential signal of an object
US11006898B2 (en) Biological information measurement apparatus, method for controlling the same, and recording medium
JP7616205B2 (ja) 電気信号計測装置、電気信号計測システム、及び電気信号計測方法
Jamaluddin et al. Flexible bio-signals channels acquisition system for ECG and EMG application
Svärd et al. Design and evaluation of a capacitively coupled sensor readout circuit, toward contact-less ECG and EEG
Nagasato et al. Capacitively coupled ECG sensor system with digitally assisted noise cancellation for wearable application
EP4181769B1 (en) Apparatus for biopotential measurement
CN221654287U (zh) 皮肤阻抗检测电路、可穿戴设备及电子面膜、美护系统
JPH06121775A (ja) 生体電気現象検出装置
Fauzani et al. Flexible Bio-signals Channels Acquisition System for ECG and EMG Application

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: 21761509

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022503152

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21761509

Country of ref document: EP

Kind code of ref document: A1