WO2004089209A1 - 生体情報検出装置、これに用いる接触部材及び生体情報検出部用塗料 - Google Patents
生体情報検出装置、これに用いる接触部材及び生体情報検出部用塗料 Download PDFInfo
- Publication number
- WO2004089209A1 WO2004089209A1 PCT/JP2004/003390 JP2004003390W WO2004089209A1 WO 2004089209 A1 WO2004089209 A1 WO 2004089209A1 JP 2004003390 W JP2004003390 W JP 2004003390W WO 2004089209 A1 WO2004089209 A1 WO 2004089209A1
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- WIPO (PCT)
- Prior art keywords
- biological information
- unit
- information detecting
- contact
- information detection
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
-
- 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
-
- 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
- A61B5/68—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/06—Rims, e.g. with heating means; Rim covers
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
Definitions
- Biometric information detection device contact member used therefor, and paint for biometric information detection section
- the present invention relates to a biological information detecting device for detecting biological information such as a heartbeat and an electroencephalogram of a person who drives or operates a vehicle, a ship, an airplane, or the like, a contact member used for the device, and a paint for detecting biological information.
- a biological information detecting device for detecting biological information such as a heartbeat and an electroencephalogram of a person who drives or operates a vehicle, a ship, an airplane, or the like, a contact member used for the device, and a paint for detecting biological information.
- biological information detecting devices for knowing a driver's health while driving a car have been studied.
- a biological information detecting device for example, a driver's heartbeat during driving of a vehicle is detected, and based on the heartbeat, the driver's health condition such as drowsiness, fatigue, frustration, or presence or absence of arrhythmia is determined.
- the driver or the manager of the vehicle knows the change in the physical condition, and can take measures such as changing the driving after that to another person or taking a break.
- the biological information detection device can contribute to the safety of driving a car or the like.
- a biological information detecting device there is known a device in which an electrode is provided in a handwheel portion of an automobile and the biological information is detected by the electrode (for example, see Patent Document 1).
- Patent Document 1
- the impedance and resistance value of each electrode vary depending on the structure and material of the electrode used for detecting the biological information.
- Biological signals corresponding to information were sometimes distorted or mixed with noise. Then, the accuracy of the biological signal corresponding to the biological information is low. If this is the case, it is impossible to accurately determine the health condition of the driver, which contributes to safety during driving. Disclosure of the invention
- an object of the present application is to solve the above-described problem as an example.
- a biological information detecting device capable of improving the detection accuracy of a biological signal corresponding to biological information and contributing to safety during driving of a vehicle or the like.
- An object of the present invention is to provide a contact member and a coating material for a biological information detecting section used for this.
- the invention according to claim 1 includes a contact portion such as a steering handle arranged so as to come into contact with a person to be detected of biological information, and the detected person provided in the contact portion.
- a biological information detecting unit such as an electrode, for detecting the biological information
- an amplifier such as an amplifier, connected to the biological information detecting unit and amplifying a biological signal corresponding to the detected biological information.
- the biological information detection device a sum of a resistance value between the biological information detection unit and the amplification unit, and an impedance between a subject who contacts the contact unit and the biological information detection unit, The input impedance of the amplifying unit is 100/100 or less.
- an invention according to claim 18 is directed to a steering handle or the like used as a contact portion included in the biological information detection device according to any one of claims 1 to 17.
- the biological information detecting section such as an electrode has a resistance value of 5 k ⁇ or less.
- the invention according to claim 28 is a paint for a biological information detecting unit which forms a detecting unit such as an electrode for detecting biological information from a subject, comprising: It is composed of a conductive material having a ratio of 25 ⁇ cm or less, an epoxy resin, and a curing agent.
- FIG. 1 is a diagram schematically showing a biological information detecting device according to one embodiment of the present invention and an equivalent circuit thereof.
- FIG. 2 is a view showing a portion of the steering handle in FIG. 1 where electrodes are formed.
- FIG. 3 is a diagram showing a configuration for transmitting biological information of the device according to one embodiment of the present invention.
- FIG. 4 is a diagram schematically showing a biological information detecting device according to another embodiment of the present invention.
- FIG. 5 is a diagram schematically showing a biological information detecting device according to still another embodiment of the present invention.
- FIG. 6 is a diagram showing electrocardiogram waveforms of the example and the comparative example.
- the biological information detecting device includes a vehicle operating / handle as a contact portion arranged so as to come into contact with a person to be detected of biological information, and a biological information provided on the steering handle.
- An electrode serving as an information detecting unit; It consists of an amplifier as a width section, and an, and outputs an electrocardiogram waveform to detect the driver's heart rate as the biometric information, with the subject of the biometric information as the driver of the vehicle.
- the biological information detecting device 10 of the present embodiment includes a steering handle 1, an electrode 4, and an AC differential amplifier 6.
- the steering handle 1 is composed of a steering wheel 2 and spokes 3 supporting the steering wheel 2.
- a pair of electrodes (right electrode 41 and left electrode 42) are formed on the left and right sides of the steering wheel 2 of the steering wheel 1, and the heartbeat of the driver as biological information is formed. (In other words, the potential in the driver's hand).
- the electrodes 41 and 42 are connected to an AC differential amplifier 6 (hereinafter, the AC differential amplifier 6 is also simply referred to as an amplifier 6) for detecting a potential difference between the electrodes 41 and 42. It is connected .
- left and right refer to left and right in use of the member and the like.
- Val and Va2 are potentials generated on the right and left hands, respectively, in accordance with the heartbeat (Val and Va2 are hereinafter referred to as initial potentials Va). .).
- R 1 and R 2 shown in FIG. 1 (a) are the values of the resistance between the electrodes 41 and 42 and the pump 6, and R 1 is the value on the electrode 41 of the steering handle 1. Indicates the resistance between the position touched by the driver's hand 51 and the amplifier 6 (hereinafter, Rl and R2 are referred to as the resistance R between the electrode and the amplifier).
- the resistance value R between the electrode and the amplifier is determined by the distance between the material of the electrodes 41 and 42 and the amplifier 6 and the position where the driver of the electrodes 41 and 42 touches the electrodes 41 and 42.
- the resistance value is determined by the length up to the end of ⁇ 42, the maximum width, the film thickness, etc., and will be described later in detail.
- r1, C1 and r2, C2 indicate the impedance between the driver's hand 51 and 52 and the electrodes 41 and 42, respectively, and indicate the electrode impedance or contact impedance.
- electrode impedances r and C in the present application. Note that r exists between the driver's hands 51 and 52 and the electrodes 41 and 42. C represents the capacitance existing between the driver's hands 51 and 52 and the electrodes 41 and 42.
- Z1 and Z2 indicate the input impedance of each input terminal of the amplifier 6.
- an electrocardiogram waveform can be obtained by performing a predetermined amplification on a potential difference between the potential Va1 obtained from the electrode 41 and the potential Va2 obtained from the electrode 42.
- the resistance R1 between the electrode and the amplifier is The value V b1 divided between the sum of the electrode impedances r 1 and C 1 and the input impedance Z 1 of the amplifier is the input value of the pump 6.
- the initial potential V a 2 is defined by the sum of the electrode-to-amplifier resistance value R 2 and the electrode impedance r 2 and C 2, and the input impedance Z 2 of the amplifier.
- the value V b 2 divided by is the input value of the amplifier 6.
- the sum of the electrode-to-amplifier resistance value R (11 or 12) and the electrode impedances r and C (r1 and C1 or r2 and C2) is: It is less than 1/100 of the input impedance Z (Z1 or Z2) of the amplifier 6. More specifically, the sum of the electrode-to-amplifier resistance value R 1 and the electrode impedances rl and C 1 is less than 100 times less than the input impedance Z 1 of the amplifier. The sum of the inter-amplifier resistance value R 2 and the electrode impedances r 2 and C 2 is less than 100 times less than the input impedance Z 2 of the amplifier.
- the lower limit of the sum of the electrode-to-amplifier resistance value R (R 1 X ⁇ R 2) and the electrode impedances r and C (r 1 and C 1 or r 2 and C 2) is not particularly limited. Is 1/100 or more of the input impedance Z (21 or ⁇ 2) of the amplifier 6.
- the individual impedance and the resistance value fluctuate, and the electrode having the frequency characteristic Due to the impedance, the original signal (initial potential) V a1 or V a2 at the (+) input section and the (-) input section of the amplifier 6 can be prevented from being distorted and noise can be suppressed.
- an accurate ECG waveform can be obtained from the amplifier 6.
- the input impedance Z of the amplifier 6 is usually more than 1 ⁇ each. Therefore, the sum of the electrode-to-amplifier resistance value R and the electrode impedance r and C should be 10 k ⁇ or less.
- the sum of the resistance value R between the electrode and the amplifier and the electrode impedances r and C becomes 1/100 or less of the input impedance Z of the amplifier. More specifically, the sum of the resistance R 1 and the electrode impedance r 1 and C 1 is 10 k ⁇ or less, and the sum of the resistance R 2 and the electrode impedance r 2 and C 2 is also 10 k ⁇ . ⁇ or less.
- the lower limit of the sum of the electrode-to-pump resistance R and the electrode impedances r and C is not particularly limited, but is usually about 0.1. This lower limit will be described later.
- the respective values of the electrode-to-amplifier resistance value R and the electrode impedances r and C are not particularly limited, but are usually , Each value is set as follows.
- the resistance value R between the electrode and the amplifier is set to be not more than 1/200 of the input impedance Z of the amplifier 6. More specifically, the resistance value R1 is set to be less than 1/200 of the input impedance Z1 of the amplifier 6, and the resistance value R2 is also set to be less than 1/2200 of the input impedance Z2 of the amplifier 6. And The lower limit value of the electrode first amplifier between the resistance value R is not particularly limited, and 2. the input impedance Z of amplifier 6 3 X 10 5 minutes 1 or more.
- the resistance value R between the electrode and the amplifier is set to 5 k ⁇ or less. With such a range, as described above, the resistance value between the electrode and the amplifier becomes equal to or less than 1/200 of the input impedance Z of the amplifier 6. Specifically, the resistance values R1 and R2 are each set to 5 k ⁇ or less.
- the electrodes 41 and 42 are made of a conductive resin or the like whose resistance value is 5 k ⁇ or less.
- a material (conductive component) of such a conductive resin a material having a volume resistivity P of 25 ⁇ cm or less can be used.
- a material containing at least one of silver, nickel, gold, palladium, carbon and carbon nanotube is preferably used. The volume resistivity of each material, silver (Ag); 1. 1X10- 4 ⁇ cm, nickel (N i); 2. 7x10 one 1 Omega cm, gold (Au); 2.
- silver is preferably used as a high-performance conductive material for the electrodes 41 and 42 because silver has the lowest volume resistivity.
- the lower limit of the volume resistivity p of the material of the conductive component is not particularly limited, it is usually set to 1. lxl 0 to 4 ⁇ cm, which is the volume resistivity p of silver.
- the conductive material a material containing at least one of a transparent and conductive metal oxide and a transparent and conductive polymer is more preferably used. Since these materials containing metal oxides or polymers have conductivity, the resistance value R between the electrode and the amplifier can be set to 5 k ⁇ or less as described above. Further, since these materials are transparent, the color of the member on which the conductive resin layer 45 is formed appears when the conductive resin layer 45 is formed by being included in a paint described later, and thus the conductive The color of the member on which the resin layer 45 is formed can be matched with the members around the member, for example, the interior of the vehicle. Therefore, the design can be improved as compared with the above-described conductive components such as silver.
- examples of the transparent and conductive metal oxide include ITO (indium Tin Oxide), ATO (Antimony Tin Oxide), and AZO (Aluminium Zinc Oxide).
- the volume resistivity p of each of these materials, I TO; 9 X 10- 3 ⁇ cm, ATO; 5 X 10- 3 Q cm, AZO; Ri 2 X 10 _4 ⁇ cm der both above 25 ⁇ cm or less.
- examples of the transparent and conductive polymer include those generally called conductive polymers, such as polyacetylene, polypyrrole, and polythiophene doped with an electron acceptor or an electron donor.
- the conductive polymer, the conductivity is high molecule showing a 10- 7 S ⁇ cm- 1 or more.
- the electrodes 41 and 42 are formed as a conductive resin layer 45 on the steering wheel 2 of the steering wheel 1.
- the paint for forming the conductive resin layer 45 contains, as a conductive component, at least one of silver, nickel, gold, palladium, carbon, and carbon nanotubes used as the material of the electrodes 41 and 42 described above. It contains an epoxy resin or the like as a component, and further contains a curing agent. This paint contains 70 to 80 conductive components as described above. %.
- silver is the most stable and is preferably used in consideration of the problem of quality deterioration such as peeling or cracking after painting.
- a paint containing the above-described conductive component is applied to the surface of the steering handle 1.
- the coating area and the film thickness are usually about 5 Ocm in length, about 5 cm in width, and about 50 zm in film thickness due to the size of the steering handle 1.
- the resistance of the painted surface can be reduced by 5 k as shown in the following equation (1). ⁇ or less.
- the electrodes 41 and The area (length and width) and film thickness of 42 are not particularly limited.
- the lower limit of the above-described resistance value R is not particularly limited, but silver having the lowest volume resistivity p is used, and the length from the contact portion to the end of the painted surface is at least about 1 cm. When the resistance value R becomes 4. 4 X 10- 3 ⁇ or more.
- the electrode impedances r and C should be less than 1/200 of the input impedance Z in the amplifier 6.
- the electrode impedances r 1 and C 1 are set to be less than 1/2200 of the input impedance Z 1 in the amplifier 6, and the electrode impedances r 2 and C 2 are also equal to the input impedance Z 2 in the amplifier 6. It should be less than 1/200.
- the lower limits of the electrode impedances r and C are not particularly limited, but are usually set to 1 / 10,000 or more of the input impedance Z of the amplifier 6.
- the electrode impedances r and C are 5 k ⁇ or less. With such a range, as described above, the electrode impedance r and the electrode impedance C are equal to or less than 1/200 of the input impedance Z of the amplifier 6. Specifically, the electrode impedances r 1 and C 1 are set to 5 k ⁇ or less, and the electrode impedances r 2 and C 2 are also set to 5 k ⁇ or less.
- the electrodes 41 and 42 have the same contact area between the driver's hands 51 and 52 and the electrodes 41 and 42 on the left and right sides of the steering handle 1, respectively. It is formed so as to be 2 cm 2 or more per part.
- the electrode impedances r and C have frequency characteristics as described above, and the lower the frequency, the greater the electrode impedance.
- the electrode impedance for 1 Hz is about 10 k ⁇ (more specifically, See, for example, the story of the electrode and the paste in the EEG electrode pocket knowledge> (June 9, 1993, NEC Sanei) p. 16).
- This value is obtained when an electrode with an area of about 1 cm 2 used for medical purposes is used.
- the contact area is increased, r decreases, and the capacitive impedance formed by C also decreases, so that the electrode impedance r and C decrease.
- the electrode impedances r and C are not more than 12 of 10 k ⁇ , that is, 5 k ⁇ . It can be reduced to: Further, by setting the contact area to 25 cm 2 or more, the electrode impedances r and C can be reduced to 1Z25 or less of 10 kQ, that is, to about 0.4 k ⁇ . Furthermore, considering the state that the palm is in contact with all the electrodes 4 of the driver the contact area, by a 100 cm 2 or less, the electrode impedance r and C 10 k Omega of 1/100, i.e. 0.1 It can be reduced to a degree. Therefore, the lower limit of the impedance (electrode impedance r and C) between the subject and the biological information detection unit is not particularly limited, but is usually about 0.1kQ.
- the lower limit value of the sum of the resistance value R and the electrode impedance r and C is 0.1 k ⁇ or more as described above, and the lower limit value of the resistance value R and the electrode impedance r
- the sum of the lower limit of C and C and the lower limit of C is approximately equal to the lower limit of electrode impedance r and C.
- FIG. 2 (a) shows the right side electrode 41 and the left side electrode 42 so that it does not occur.
- FIG. 3 is a view showing a portion of the steering wheel 1 of FIG. 1 where electrodes are formed.
- the biological information detecting device 10 of the embodiment does not require an AC differential amplifier 6 for detecting a potential difference between the electrodes 41 and 42 and an output signal of the AC differential amplifier 6.
- a / D Analog / Digital
- a / D Analog / Digital
- a clock generator 25 that supplies an operation clock to the CPU 20
- a heartbeat data transmission device 7 including:
- the electrodes 41 and 42 constitute a potential-type heart rate sensor.
- the electrodes 41 and 42 generate a pulse-like potential (myocardial action potential) between both hands of the driver, which is generated in accordance with electrical excitation of the heart.
- And 42 to detect the heartbeat and 'heartbeat'. Then, the potentials detected by the electrodes 41 and 42 are input to an AC differential amplifier 6 to detect a potential difference between the electrodes 41 and 42.
- the output of the AC differential amplifier 6 is input to the LPF 17 to remove various noises such as noise generated from the vehicle, and the 20 Hz heartbeat signal component (about 20 Hz) of the output is removed. ) Is passed.
- the heartbeat signal that has passed through the LPF 17 is amplified to a predetermined level by the amplifier 18 and then converted to a digital signal by the A / D converter 19.
- the digital heartbeat signal waveform that is, the digital myocardial action potential data is input to the CPU 20 and is input from the CPU 20 to the buffer 21 to be temporarily stored. At this time, the time when the digital heart rate data was input to CPU It may also be possible to store information as to whether or not it has been detected.
- An operation clock is supplied to the CPU 20 by the clock generator 25.
- an electrocardiogram waveform is obtained by appropriately amplifying the potential due to the heartbeat of the driver's hand detected by the electrodes 41 and 42.
- the data of the potential detected by the electrodes 41 and 42 can be used as follows. That is, for example, it is possible to transmit the biological information of the driver during driving to another device in real time, diagnose the driver's health using the device, and immediately alert the driver if an abnormality is diagnosed. it can.
- biometric information during driving may be stored in a predetermined device, and after the driver has completed driving, biometric information of the driver during driving may be notified.
- an in-vehicle navigation device is preferably used as a device for notifying the driver of the driver's biological information.
- the sum of the resistance value R between the electrode and the amp and the electrode impedances r and C is equal to one of the input impedance Z of the amplifier 6.
- the ratio is less than one-hundredth, the biological (potential) signal of the hand, which is generated in response to the driver's heartbeat as the biological information, is suppressed from being distorted or noise is mixed into the biological signal. Therefore, the amplifier 6 can amplify and output an accurate potential, and obtain an accurate electrocardiogram waveform.
- the biological information detection device 10 of the present embodiment makes it possible to stably detect the driver's heartbeat even during traveling.
- the electrode 41 has a resistance value of 5 k ⁇ or less, so that the resistance value R 1 between the electrode 41 and the amplifier 6 is 5 k ⁇ . ⁇ or less. Further, since the resistance value of the electrode 42 is 5 k ⁇ or less, the resistance value R 2 between the electrode 42 and the amplifier 6 becomes 5 k ⁇ or less.
- These resistance values R 1 and R 2 are respectively less than or equal to 200 times less than the input impedance Z 1 or Z 2 of the amplifier 6 which is usually about 1 ⁇ . Therefore, the sum of the electrode-to-amplifier resistance value R and the electrode impedances r and C can be set to 100/100 or less of the input impedance Z of the amplifier 6.
- the potential signal of the hand generated in response to the driver's heartbeat of the biological information may be distorted at the input of the amplifier 6 or may be distorted.
- the noise is suppressed from being mixed into the signal. Therefore, the amplifier 6 can amplify and output an accurate potential, and obtain an accurate electrocardiogram waveform.
- the biological information detecting device 10 of the present embodiment makes it possible to stably detect the driver's heartbeat even during traveling.
- the coating material for forming an electrode used in the present embodiment since the volume resistivity P is made of a conductive material having a resistivity of 25 ⁇ cm or less, for example, the coating material is made of 250 cm 2 (5 cm 2 ).
- the electrodes 41 and 42 formed by painting with an area of about 50 cm (X 50 cm) and a film thickness of about 50 m can have a resistance value of 5 k ⁇ or less. Therefore, the resistance value R between the electrode 4 1 (or 4 2) and the amplifier 6 becomes 5 k ⁇ or less. This resistance value R is less than one hundredth of the input impedance Z of the amplifier 6 which is usually about 1 ⁇ ⁇ .
- the sum of the resistance value R between the electrode and the amplifier and the electrode impedance r can be set to be equal to or less than 1/100 of the input impedance Z of the amplifier 6.
- the control handle 1 of the automobile has been described as a member with which a person to be detected of biological information contacts, but the present invention is not limited to this.
- the present application can be applied to any control section of a vehicle such as a car, a ship, or an airplane.
- any member other than the control handle may be used as long as it is a member that can be touched or gripped by a person.
- a throttle lever or a switch used for operating or controlling a machine or device may be used. Can be.
- the member to which the subject of biometric information contacts is a control unit used to control at least one of an automobile, a ship, and an airplane, and a subject to be controlled using the control unit. And an auxiliary contact portion configured to assist the subject.
- Figure 4 and Figure 5 This will be described using the biological information detecting devices 11 and 12 shown in FIG. 4 and 5, members having the same functions as the members shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.
- the auxiliary contact portion is used for, for example, a side brake member 7 used as an auxiliary brake as shown in FIG. 4, and for resting an arm as shown in FIG.
- the armrest member 8 is used to select parking and driving functions when the vehicle transmission is automatic (so-called automatic vehicle), or the vehicle transmission is manual (so-called manual vehicle).
- the shift lever member is used to switch the transmission.
- the capturing contact portion a member or the like that assists the operation of the detected person when driving the automobile or the like, or assists the body of the detected person is used. At least one of these members is used as the auxiliary contact portion.
- the biological information detecting device 11 includes an electrode 42 as a biological information detecting portion provided on a steering wheel 1 as a control portion and a side brake member 7 as an auxiliary contact portion. It can be configured so as to be connected to the provided electrode 72 as a biological information detecting section and the amplifier 6 as a force amplifying section. Note that the electrode 42 and the electrode 72 may be short-circuited. '' With such a configuration, the amplifier 6 detects a biological signal of the electrode 42 and the electrode 72 that is in contact with the subject, amplifies the signal, and obtains an intended effect. be able to. In FIG. 4, only the left-hand electrode (1) 4 2 and 7 2 are connected, but the right-hand electrode (+) 4 1 is also provided with an auxiliary contact portion. It may be configured to.
- the biological information detecting device 12 includes an amplifier 6 serving as an amplifying unit, an electrode 42 provided on the handle 1 or an armrest member 8 serving as an auxiliary contact unit. It can be configured to amplify a biological signal detected by one of the electrodes 82, which is the information detection unit, with which the subject is in contact.
- the amplifier 6 can detect and amplify the biological signal of the person in contact with the subject, and obtain the desired effect.
- the amplifier 6 amplifies one of the biological signals for only the left-hand electrodes (-) 42 and 82.
- the width is configured to be wide, the electrode (+) 41 on the right-hand side may be similarly configured by providing an auxiliary contact portion.
- the subject who drives the automobile or the like does not hold the main control portion such as the operating handle with both hands. Even in this case, if the hand or arm of the person not touching the control unit is in contact with the auxiliary contact unit, the biological information of the subject can be detected.
- the electrode serving as the biological information detecting unit provided in the contact part is necessary.
- the amplifier 6 amplifies a biological signal from the two electrodes (41) and (42, 72 or 82).
- the amplifier 6 includes a biological signal detected when the subject comes into contact with the electrode 41 provided on the control unit 1 of one system, and an electrode 4 2 provided on the control unit 1 of the other system.
- the biological signal detected by one of the electrode 72 provided on the side brake member 7 and the electrode 82 provided on the armrest member 82 and the electrode 82 being in contact with the subject is amplified. Things.
- the electrode as the biological information detecting section is provided in the control section or auxiliary contact section of an automobile, ship or airplane
- the unit of the electrode made of a conductive resin layer is used in the existing control section or auxiliary contact section. It can be attached and connected from this unit to an amplifier as an amplifier.
- the electrode serving as the biological information detecting unit may directly apply the above-described paint to a control unit or an auxiliary contact unit of an automobile, a ship, or an airplane.
- the amplification unit amplifies the signal of the biological information obtained from either the control unit or the capturing contact unit.
- the circuit is similar to that shown in Fig. 1 (b).
- the left hand 52 is hung on the handle 1 and the side brake member 7, and in FIG. 5, the left hand 52 is hung on the handle 1 and the armrest member 8.
- the left hand 52 is actually hung on the handle 1, the side brake member 7, the armrest member 8, or not hung on any of them.
- the electrodes 41 and 42 are described as being made of the conductive resin layer 45 provided in the steering handle 1, but are not limited thereto.
- the steering wheel 2 of the steering handle 1 itself may be an electrode 46 formed of a material having a volume resistivity of 25 ⁇ cm or less.
- the position where the electrode 46 is formed is not particularly limited.
- the electrode 46 may be provided on only a part of the steering wheel 2 as shown in FIG. 2 (b), or may be provided around the steering wheel 2 as shown in FIG. 2 (c). May be provided.
- the form of the electrodes 41 and 42 is not particularly limited, as long as the resistance R and the electrode impedances r and C described above can be provided.
- the position where the coating for the conductive resin layer is applied is not particularly limited. As shown in the figure, only the side of the steering wheel 1 of the steering wheel 1 not facing the driver is set. When formed in this way, the steering handle 1 can function as an electrode in the biological information detection device without deteriorating the aesthetic appearance.
- the electrodes 41 and 42 are provided only on the side of the steering wheel 2 facing the driver, provided only on the outside or inside of the steering wheel 2, or provided so as to go around the outer surface of the steering wheel 2. You may. However, it is necessary to prevent the left and right electrodes 41 and 42 from coming into contact with each other.
- the electrodes are formed from the pair of electrodes 41 and 42.However, the present invention is not limited to this.
- the electrodes may be formed from one electrode. However, it may be formed from three or more electrodes.
- the AC differential amplifier 6 is used as an amplifying unit.
- the present invention is not limited to this, and has a function of amplifying a potential according to an electrode for detecting the potential. If you can,
- the resistance R between the electrode and the amplifier and the electrode The effect of one dance r and C on the electrocardiogram waveform will be specifically described.
- the input impedance Z of the amplifier 6 is about 1 ⁇ .
- the electrocardiogram waveform when the resistance R between the electrode and the pump is 5 k ⁇ or less and the electrode impedance r and C are 0.4 k ⁇ is shown in Fig. 6 (a).
- the sum of the electrode-to-amplifier resistance R and the electrode impedances r and C is at least 1/100 or less of the input impedance Z of the amplifier 6.
- the resistance R between the electrode and the amplifier and the electrode impedances r and C are each less than 1/200 of the input impedance Z of the pump 6.
- Fig. 6 (b) shows the electrocardiogram waveform when the electrode-to-amplifier resistance R is 100 k ⁇ and the electrode impedances r and C are 0.4 k ⁇ . This is because the resistance value R between the electrode and the amplifier is larger than that specified in the above-described embodiment. In this case, the sum of the electrode-to-amplifier resistance R and the electrode impedances r and C is one hundredth or more of the input impedance Z of the amplifier 6.
- Figure 6 (c) shows the ECG waveform when the resistance R between the electrode and the amplifier is 5 k ⁇ or less and the electrode impedances r and C are 10 k ⁇ . This is because the electrode impedances r and C are larger than those defined in the above embodiment. In this case, the sum of the resistance R between the electrode and the electrode, the electrode impedance r and the electrode C is 1/100 or more of the input impedance Z of the pump 6.
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Abstract
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Priority Applications (3)
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JP2005505179A JPWO2004089209A1 (ja) | 2003-04-03 | 2004-03-15 | 生体情報検出装置、これに用いる接触部材及び生体情報検出部用塗料 |
US10/524,414 US20050239075A1 (en) | 2003-04-03 | 2004-03-15 | Living body information detecting device, contact member used therefor, and living body information detecting member-use paint |
EP04720710A EP1611844A4 (en) | 2003-04-03 | 2004-03-15 | INFORMATION DETECTION DEVICE FOR A LIVING BODY, CONTACT ELEMENT AND COLOR TO THE INFORMATION DETECTION ELEMENT OF A LIVING BODY |
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JP2003100454 | 2003-04-03 | ||
JP2003-100454 | 2003-04-03 |
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WO2004089209A1 true WO2004089209A1 (ja) | 2004-10-21 |
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PCT/JP2004/003390 WO2004089209A1 (ja) | 2003-04-03 | 2004-03-15 | 生体情報検出装置、これに用いる接触部材及び生体情報検出部用塗料 |
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US (1) | US20050239075A1 (ja) |
EP (1) | EP1611844A4 (ja) |
JP (1) | JPWO2004089209A1 (ja) |
CN (1) | CN1767784A (ja) |
WO (1) | WO2004089209A1 (ja) |
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Cited By (16)
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WO2007066513A1 (ja) * | 2005-12-05 | 2007-06-14 | Pioneer Corporation | 生体情報検出装置、ハンドル部材、ハンドルカバー及びハンドル部材の製造方法 |
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JP2010046310A (ja) * | 2008-08-22 | 2010-03-04 | Toyota Motor Corp | 車両用心電計測装置 |
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JP2019517847A (ja) * | 2016-04-29 | 2019-06-27 | フリーア、ロジック、インコーポレイテッドFreer Logic, Inc. | 脳の電気的活動の非接触式の身体及び頭部ベースのモニタリング |
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JP2022000236A (ja) * | 2016-04-29 | 2022-01-04 | フリーア、ロジック、インコーポレイテッドFreer Logic, Inc. | 脳の電気的活動の非接触式の身体及び頭部ベースのモニタリング |
JP7208012B2 (ja) | 2016-04-29 | 2023-01-18 | フリーア、ロジック、インコーポレイテッド | 脳によって生じる電気的活動をモニタリングするためのデバイスおよび方法、および人の生理学的状態をモニタリングするための方法 |
JP7279969B2 (ja) | 2016-04-29 | 2023-05-23 | フリーア、ロジック、インコーポレイテッド | 脳の電気的活動の非接触式の身体及び頭部ベースのモニタリング |
JP7279970B2 (ja) | 2016-04-29 | 2023-05-23 | フリーア、ロジック、インコーポレイテッド | 脳によって生じる電気的活動をモニタリングするためのデバイス及び方法 |
JP2018533517A (ja) * | 2016-07-14 | 2018-11-15 | バイドゥ・ユーエスエイ・リミテッド・ライアビリティ・カンパニーBaidu USA LLC | 電極を用いた、人間運転者が自律走行車の制御を引き継ぐメカニズム |
JP2018054524A (ja) * | 2016-09-30 | 2018-04-05 | 国立大学法人九州大学 | 生体の接触面積検出装置 |
Also Published As
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JPWO2004089209A1 (ja) | 2006-07-06 |
US20050239075A1 (en) | 2005-10-27 |
EP1611844A4 (en) | 2007-08-01 |
CN1767784A (zh) | 2006-05-03 |
EP1611844A1 (en) | 2006-01-04 |
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