JP5115704B2 - Steering - Google Patents

Description

  The present invention relates to a vehicle equipment used in a vehicle equipped with an electric circuit for acquiring biological information for electrically acquiring biological information of a passenger.

  In recent years, more intelligent vehicles have been promoted, and various techniques for electrically acquiring the biological information of the occupant have been proposed in order to monitor the state of the occupant's body centering on the driver.

For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-24704), physiological data detection means for detecting physiological data of a driver of a vehicle, and the mental state of the driver based on the physiological data are used as a mental state determination value. Mental state calculation means for calculating; determination threshold setting means for setting a determination threshold value for the driver's mental state; and providing means for providing the driver's mental state together with the determination threshold value using the mental state determination value; , A driver mental state information providing system is disclosed.
JP 2004-24704 A

  The physiological data detection means for detecting physiological data of a vehicle driver described in Patent Document 1 detects the driver's heart rate and outputs it as physiological data indicating the heart rate. This physiological data detection means obtains physiological data by detecting a conduction state between electrodes or a potential difference when the driver holds the steering wheel. Patent Document 1 describes that a ground (not shown) is connected to one of the electrodes when the driver grips the steering wheel.

  As described in Patent Document 1, when an electrode type electrocardiograph is mounted on a vehicle, it is necessary to ground the circuit. For this reason, in the prior art, a conductive metal ground plate or the like was used for the seating surface of the seat in contact with the body, but this method is not comfortable for driving, or the driver does not receive biometric information. There was a problem of being uncomfortable and aware of being acquired.

In order to solve the above-mentioned problems, the invention according to claim 1 is a steering for use in a vehicle equipped with a biological information acquisition device that electrically acquires a passenger's biological information, wherein the conductive yarn is outside. It is characterized in that it is sewn in a spiral around the periphery, and the conductive thread is used as a ground for the biological information acquisition device .

  According to the vehicle equipment of the first aspect of the present invention, the biological information acquisition device can acquire the biological information without the passenger being aware of it or feeling uncomfortable.

  Moreover, according to the vehicle equipment according to claim 2 of the present invention, the biological information acquiring apparatus can be grounded without the passenger being aware of it or feeling uncomfortable.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a steering that is a vehicle equipment according to an embodiment of the present invention, and FIG. 2 is a view of the vicinity of the driver's seat of the biological information acquisition apparatus grounded by the vehicle equipment according to the embodiment of the present invention. FIG. 3 is a schematic perspective view of the entire biological information acquisition apparatus grounded by the vehicle equipment according to the embodiment of the present invention. FIG. 4 is a vehicle according to the embodiment of the present invention. FIG. 5 is a diagram showing a main part of a circuit configuration of a biological information acquisition device grounded by equipment, and FIG. 5 is a schematic block diagram of the biological information acquisition device grounded by vehicle equipment according to an embodiment of the present invention. FIG.

  In the present embodiment, the case where the biometric information acquisition device is provided in the driver's seat will be described. However, as a person who is a lifesaving target by the in-vehicle AED, a passenger seat such as a passenger seat and a rear seat can be used. Similarly, the idea of the present invention can be applied. In this embodiment, the biometric information acquisition apparatus will be described by taking as an example the case where the information (heart rate / electrocardiogram) related to the driver's heart is acquired and the lifesaving operation by the in-vehicle AED is executed, but other biometric information is acquired. The present invention can also be applied to a biological information acquisition apparatus. More specifically, according to the biometric information acquisition device grounded by the vehicle equipment according to the embodiment of the present invention, the biometric information acquisition device is the occupant's heartbeat, pulse, electrocardiogram, respiration, body temperature, weight, body. It is possible to acquire biological information such as fat, blood pressure, sweating, line of sight, myoelectricity, and skin impedance.

  1 to 5, 10 is a driver seat, 20 is a driver seat belt, 21 is a first-stage amplifier for a first electrode, 25 is a coaxial cable for a first heart rate sensor electrode, 30 is a second heart rate sensor electrode, 31 is the first stage amplifier for the second heart rate sensor electrode, 35 is the coaxial cable for the second heart rate sensor electrode, 40 is the steering, 44a and 44b are conductive yarns, 45 is the ground cable, and 50 is the second stage amplifier. , 51 is an amplifier, 52 is a high-pass filter, 53 is a low-pass filter, 100 is a determination processing unit, 200 is an electrocardiogram information acquisition unit, 210 and 220 are first and second heart rate sensor electrodes, 300 is an AED unit with a built-in seat belt, 310 and 320 are AED electrodes, 400 is an own vehicle information input unit, 410 is a parking switch, 420 is a vehicle speed sensor, 500 is an AED operation switch, 6 0 is a determination result output unit, 610 is a display, 620 is a speaker, 700 is an external communication output unit, 710 is a communication interface unit, 720 is a vehicle control / information interface unit, 800 is a navigation system unit, 810 is a navigation system, and 820 is A navigation system database, 900 is a storage unit, 910 is a travel / operation record log, and 920 is a personal information file.

  FIG. 1 shows an external view of a steering 40 that is a vehicle equipment according to an embodiment of the present invention, and a partially enlarged view of the steering 40. As shown in the enlarged view, the steering 40 which is the vehicle equipment of the present invention is sewn with a conductive thread 44, and when the occupant comes into contact with the sewn conductive thread 44, the boarding of a driver or the like It functions as a ground for a biological information acquisition device that electrically acquires a person's biological information. According to such vehicle equipment, the biometric information acquisition apparatus can acquire biometric information without the passenger being aware of it or feeling uncomfortable.

  In ordinary leather-wrapped steering, it is common to wrap the leather and sew it at one place inside, but in the steering 40 of the present invention, in addition to the conductive thread 44a that wraps the leather and sews at one place inside, As shown in the figure, assuming a position where the driver puts his hand during driving, a seam by the conductive thread 44b is also provided around the outside of the steering. Thereby, the contact between the conductive yarn 44 functioning as the ground and the driver's body (finger) is enhanced. The conductive yarns 44 a and 44 b provided on the steering 40 are connected to the ground cable 45 and guided to the second-stage amplifier unit 50.

  According to the above configuration, the biological information acquisition apparatus can be grounded without the passenger being aware of it or feeling uncomfortable.

  As the conductive yarn 44, for example, Sanderon (manufactured by Nippon Washi Dyeing Co., Ltd., trade name) can be used. The conductive yarn 44 is composed of an organic conductive fiber in which copper sulfide is chemically bonded to acrylic fiber or nylon fiber. The conductive thread 44 is not limited to the above example, and may be any one as long as it is flexible and does not cause the driver to feel uncomfortable when sewn. . Examples of such conductive yarn 44 include metal yarns such as gold, silver, copper, and stainless steel, inorganic fibers such as carbon, titanium, and alumina, conductive polymers such as polyaniline and polyacetylene, and bundles of silver-plated nylon filaments. Silver-plated nylon yarn made of a certain multifilament (for example, X-STATIC (trade name) manufactured by Sauquit), filament yarn or spun yarn made of acrylic fiber, nylon fiber or polyester fiber containing copper sulfide and nickel ( Twisted yarns), conductive yarns and non-conductive cotton yarns, core yarns of acrylic, nylon, polyester yarns, synthetic yarns, synthetic yarns, blended yarns, spun yarns (twisted yarns), etc. Any of these can be used.

The resistance (specific resistance) per unit length of the conductive yarn 44 used in the present embodiment is 10 ⁻¹ to 10 ⁻² [Ω / cm]. Make sure you can do it.

  It should be noted that heartbeat, pulse, electrocardiogram, breathing, body temperature, body weight, body fat, blood pressure, sweating, line of sight, myoelectricity, skin impedance can be obtained by a biological information acquisition device grounded by the vehicle equipment into which the conductive thread 44 is sewn. The biometric information acquisition apparatus can also be configured to acquire biometric information such as, so that the biometric information acquisition apparatus can detect various biometric information of the passenger without being unconscious and uncomfortable. Can be obtained.

    The biological information acquisition apparatus mainly includes a determination processing unit 100, a heartbeat information acquisition unit 200, a seat belt built-in AED unit 300, a host vehicle information input unit 400, an AED operation switch 500, a determination result output unit 600, and an external communication output unit. 700, a navigation system unit 800, and a storage unit 900.

  FIG. 2 shows the appearance of the driver's seat 10. As shown in FIG. 2, the driver's seat 10 is provided with first and second heart rate sensor electrodes 210 and 220. A driver gets on the vehicle, sits on the driver's seat 10, holds the steering wheel 40, and operates the vehicle. Is started, a weak current is detected from the heart rate sensor electrodes 210 and 220 on the back of the driver. These weak currents are amplified and acquired by the determination processing unit 100 of the biological information acquisition apparatus as information (heart rate / electrocardiogram) related to the heart of the driver. The heart rate sensor electrodes 210 and 220 used for acquiring such information related to the heart (heart rate and electrocardiogram) are composed of, for example, capacitive electrodes. As such a capacitive electrode, for example, those described in JP-A-2005-511174 can be used.

  The biometric information acquisition apparatus has a configuration in which an AED electrode portion serving as a lifesaving device in the event of a cardiac arrest of a driver is incorporated in a seat belt or the like, and this is configured such that an AED electrode 310, 320 is provided.

  The seat 10 is a driver's seat, and in this embodiment, the driver is a target for monitoring of the biological information acquisition apparatus and a target for treatment by AED. Note that, as a passenger to be monitored by an electrocardiographic sensor, passengers such as a passenger seat and a rear seat can be considered in the same manner as in this embodiment.

  For the first heart rate sensor electrode 210 and the second heart rate sensor electrode 220 in the heart rate information acquisition unit 200, for example, a capacitive heart rate sensor electrode having an oxide film layer provided on the surface is used, and the first heart rate sensor electrode 210 is a driver. The second heart rate sensor electrode 220 is disposed so as to be substantially on the left side of the driver's back, and so as to be approximately on the right side of the driver's back.

  A signal detected between the first heart rate sensor electrode 210 and a predetermined reference potential is output from the first-stage amplifier unit 21 for the first heart rate sensor electrode, and between the second heart rate sensor electrode 220 and the predetermined reference potential. The first-stage amplification is performed to the signal level of about 1 mV to several mV (for example, 2 mV) in the first-stage amplifier unit 31 for the second heart rate sensor electrode.

  The distance between the first heart rate sensor electrode 210 and the input end of the first stage amplifier unit 21 for the first heart rate sensor electrode, the input end of the second heart rate sensor electrode 220 and the first stage amplifier unit 31 for the second heart rate sensor electrode It is preferable to reduce the distance between the first heart rate sensor electrode 210 and the second heart rate sensor electrode 220 on the back surfaces of the first heart rate sensor electrode 210 and the second heart rate sensor electrode 220, respectively. To arrange. Therefore, as shown in FIG. 2, the first-stage amplifier unit 21 for the first heart rate sensor electrode and the first-stage amplifier unit 31 for the second heart rate sensor electrode are both embedded in the seat 10.

  Both the output signal from the first-stage amplifier unit 21 for the first heart rate sensor electrode and the output signal from the first-stage amplifier unit 31 for the second heart rate sensor electrode are output to the second-stage amplifier unit 50, respectively. The second stage amplification unit 50 performs second stage amplification.

  The signals from the first-stage amplifier unit 21 for the first heart rate sensor electrode and the first-stage amplifier unit 31 for the second heart rate sensor electrode are the coaxial cable 25 for the first heart rate sensor electrode and the coaxial cable 35 for the second heart rate sensor electrode, respectively. Thus, the signal is transmitted to the second-stage amplifier unit 50, and the second-stage amplifier unit 50 performs the second-stage amplification. The amplified signal amplified by the second stage amplifier unit 50 is used as information for determining the health condition of the driver by a processing circuit (not shown).

  The conductive thread 44 is sewn into the steering wheel 40 of the driver, and the conductive thread 44 is connected to the second-stage amplifier unit 50 through a ground cable 45. The conductive thread 44 is used as a configuration for determining a reference potential for removing an offset signal generated in a signal from the first heart rate sensor electrode 210 (second heart rate sensor electrode 220).

  Next, the amplification circuit of the heart rate sensor in the heart rate information acquisition unit 200 of the biological information acquisition device will be described. Since the circuit configuration of the first-stage amplifier section is common to the first heart rate sensor electrode 210 and the second heart rate sensor electrode 220, only one circuit configuration is illustrated in FIG. . In FIG. 4, AMP1 to AMP3 are amplifiers, and C1 and C3 are capacitors.

  The capacitor C1 is interposed between the first heart rate sensor electrode 210 (second heart rate sensor electrode 220) and AMP1, and AC-couples the first heart rate sensor electrode 210 (second heart rate sensor electrode 220) and AMP1 ( AC coupling). As a result, the offset signal generated in the signal input to the first stage amplifier section is removed. The output from the AMP2 is input to the AMP3 and fed back to the input of the AMP1 through the capacitor C3, thereby forming a bootstrap circuit. By these AMP1 and AMP2, the detection signal from the first heartbeat sensor electrode 210 (second heartbeat sensor electrode 220) can be amplified to about 1 mV with stable and low noise. AMP3 has an amplification factor of about several times, and the output signal of the first stage amplifier from AMP3 has a level of about several mV (for example, 2 mV).

  The output signal from the first-stage amplifier unit 21 for the first heart rate sensor electrode (first-stage amplifier unit 31 for the second heart rate sensor electrode) is amplified by the first-stage amplifier unit to about several times, and then as described above. Then, it is guided to the second stage amplifier section by a coaxial cable and amplified by several tens of times by the second stage amplifier section. Due to such a two-stage amplifier configuration, the configuration of the biological information acquisition apparatus of the present embodiment is an optimal configuration for mounting in a vehicle or the like.

  It is a figure which shows the circuit structure in the 2nd step | paragraph amplifier part of the heart rate sensor of a biometric information acquisition apparatus. Since the circuit configuration of the second-stage amplifier is common to the signal for the first heart rate sensor electrode 210 and the signal for the second heart rate sensor electrode 220, only one circuit configuration is shown in FIG. Is illustrated.

  In FIG. 4, 51 indicates an amplifier, 52 indicates a high-pass filter, and 53 indicates a low-pass filter. The second-stage amplifier unit 50 is provided with an amplifier 51 that amplifies the signal from the first-stage amplifier unit on the order of several tens of times, and a high-pass filter 52 and a low-pass filter 53.

  The high-pass filter 52 and the low-pass filter 53 are provided to suppress signals of frequencies other than the frequency of the electrocardiogram waveform as much as possible. With these filters, the second-stage amplifier unit 50 selectively selects only the frequency related to the electrocardiogram. You can get it.

  As shown in the figure, the high pass filter 52 and the low pass filter 53 are grounded when the conductive thread 44 sewn into the driver's steering 40 is connected to the ground cable 45 and the driver contacts the conductive thread 44. It is the composition which becomes.

  In the block diagram of the biometric information acquisition apparatus shown in FIG. 5, a determination processing unit 100 is an electronic control unit, and general-purpose information including a CPU, a ROM that holds a program that operates on the CPU, and a RAM that is a work area of the CPU. Processing mechanism.

  The heart rate information acquisition unit 200 includes heart rate sensor electrodes 210 and 220 and an amplification unit that amplifies a weak current collected from these electrodes. The heart rate information acquisition unit 200 relates to the heart of the driver who sits in the driver's seat 10 and operates the steering 40. Obtain heart rate and ECG data as information.

  The seat belt built-in AED unit 300 includes AED electrodes 310 and 320, a voltage generation unit that generates a voltage to be applied to these electrodes, an analysis unit that analyzes a voltage to be applied, and the like. The AED unit 300 with a built-in seat belt analyzes the electrocardiogram and the like related to the heart of the driver acquired by the heart rate information acquisition unit 200, and analyzes the level of applied voltage to which an electric shock should be applied. In such analysis, it is determined in advance from the characteristic of weak current collected by the heartbeat information acquisition unit 200, etc., how thick the clothes are worn by the driver, and the application of an electric shock in accordance with it The voltage is calculated.

  In the present embodiment, the case where the AED electrode is built in the seat belt will be described as an example, but the present invention is not necessarily limited to such an arrangement of the AED electrode. In other words, the AED portion may be configured to be provided in a place where it can come into contact with another driver of the vehicle, for example, a seat.

  The own vehicle information input unit 400 acquires and inputs information of various sensors (not shown) mounted on the vehicle. Examples of various sensors mounted on such a vehicle include a vehicle speed sensor 420, a parking switch 410, and a gyro. In the biological information acquisition apparatus, information about whether or not the vehicle is running is referred to using the own vehicle information input unit 400. In order to detect whether or not the vehicle is traveling, for example, a signal linked to the parking switch 410 may be acquired, but the present invention is not limited to this.

  The AED operation switch 500 is a switch that is pressed by a driver according to an instruction or the like when an electric shock is analyzed by the seat belt built-in AED unit 300 or the like. When the driver presses this switch, an electric shock is applied from the AED electrodes 310 and 320.

  The determination result output unit 600 constitutes an output interface in the biological information acquisition apparatus, and includes a display 610 that displays characters, graphics, and image information, and a speaker 620 that outputs sound. The determination result output unit 600 is not limited to the above configuration, and other man-machine interface mechanisms can be used.

  The external communication output unit 700 is a communication output unit for transmitting the biometric data acquired by the heart rate information acquisition unit 200 and information such as the AED treatment performed based on the biometric data to the outside. The communication I / F unit 710 is a communication interface such as a wireless LAN or Bluetooth, and the vehicle control / information I / F unit 730 performs communication with, for example, an in-vehicle LAN mounted on a vehicle or an in-vehicle navigation system. Interface. The external communication output unit 700 configured as described above transmits information such as biometric data and AED treatment based on the biometric data to a home, a medical center, a management center, a home server, a nearby vehicle, an alarm, Output emergency occurrence information.

  The navigation system unit 800 includes a navigation system 810 and a navigation system database 820 such as map information referred to by the navigation system 810. The navigation system 810 can acquire vehicle position information by using a GPS positioning unit that receives GPS signals from GPS satellites and calculates its own position. In the biological information acquisition device, other positioning methods can be used as long as the position information can be acquired without depending on such a GPS positioning method. Further, in the biometric information acquisition device, by referring to such position information, the driver is urged to perform the AED treatment in a safe place.

  The storage unit 900 includes a relatively large-capacity storage device such as a hard disk, and includes a travel / operation record log 910 and a personal information file 920. The travel / motion record log 910 includes a driver's biological information (heart rate and electrocardiogram information) acquired by the heart rate information acquisition unit 200, AED treatment record information acquired by the AED unit 300 with a built-in seat belt, and own vehicle information input. This is a file in which vehicle travel information from the unit 400 and position information acquired by the navigation system unit 800 are recorded in association with each other.

  The personal information file 920 is a personal information file for each driver who uses the vehicle, and the basic information (average heartbeat (learning from past history), heart rate determination threshold, medical history, physician contact information) ). In addition, in this personal information file, consent information for automatic information transmission described later can be preset.

  Next, the operation of the biological information acquisition apparatus configured as described above will be described. FIG. 6 is a diagram showing a flowchart relating to processing of the biological information acquisition apparatus. In the flowchart of FIG. 6, when the process of the biometric information acquisition apparatus is started in step S100, the process proceeds to step S101, and the driver's personal information file is read from the personal information file 920. A setting change interrupt or the like can be executed between step S100 and step S101 as necessary.

  The setting change interrupt is for accepting a reset or change of the personal information by a key input unit (not shown). Such a change operation can be performed by remote operation through communication or GUI display on the screen of the display 610.

  In step S <b> 102, biometric data is read from the heartbeat information acquisition unit 200. Here, the reading of the biological data is to read the electrocardiogram and heartbeat data (electrocardiogram / heart rate) from the heartbeat sensor electrodes 210 and 220. At this time, if it cannot be read due to disturbance noise or an error, it is recorded that it has not been measured.

In step S103, the mind and body state estimation process is executed. The mind and body state estimation process is a process for estimating an emergency state based on the heart rate acquired by the heart rate information acquisition unit 200, the face temperature of the driver acquired by a sensor (not shown), and the respiratory rate. In this psychosomatic state estimation process, individual information is absorbed, and the determination threshold value uses personal information (obtained by referring to the personal information file 920) + absolute value (for example, the heart rate threshold value 200 cannot be set as an impossible value). (Up to the maximum threshold can be set in 3 steps)
In step S104, it is determined whether an arrhythmia has occurred in the driver or whether the driver is in a cardiac arrest state based on the result of the psychosomatic state estimation in step S103. If the result of determination in step S104 is N, the process proceeds to step S102, and if the result of determination in step S104 is Y, the process proceeds to step S105.

  In step S105, a warning is output to the driver. Such a warning output to the driver issues a message such as “It is determined that there is a problem with the heart, but is there a problem?”. The inquiry method is performed by voice output from the speaker 620 and GUI output display on the display 610.

  In the subsequent step S106, the driver is asked about his / her mental and physical condition. For the warning and inquiry to the driver, considering the disturbance noise and malfunction, even if it is determined as Y in step S104, the operation step for interrogation of mental and physical conditions such as this step is provided.

  If there is no problem with the driver in step S106, the process proceeds to step S102, and if the driver is aware of a problem or an emergency in step S106, the process proceeds to step S107. Such a response by the driver is transmitted to the biological information acquisition apparatus by an input interface (not shown).

  In step S107, an alarm and information on occurrence of an emergency situation are output. The alarm and emergency information output in this step are the voice output to the vehicle, the information transmission to the outside using the external communication output unit 700, the abnormality occurrence output to the nearby vehicle (flashing of the brake lamp, hazard lamp, Etc.). In addition, information transmission destinations to which the external communication output unit 700 transmits information include a home, a medical center, a management center, a home server, and a nearby vehicle using a transmission / reception function.

  In step S108, navigation destination search / guidance start is executed. In the navigation destination search / automatic guidance start, the navigation system unit 800 searches for a stoppable location closest to the current location of the vehicle and automatically starts guidance. Such a stoppable place is a place where the vehicle can be safely stopped for performing the AED treatment. Examples include a roadside stop for highways, SAPA guidance, a shoulder stop for urban areas, the nearest hospital, plaza / parking area, and the like.

  In step S109, navigation information recording / communication output is executed. In the navigation information recording / communication output step, the external communication output unit 700 is used to transmit the navigation information calculated in step S108 (information on where to guide and where to stop) to the outside. Send output. The processing in this step is repeatedly executed until various function groups are reset or canceled from the menu on the display 610 screen.

  In step S110, it is determined whether the vehicle has stopped. In the vehicle stop determination in this step, it is determined whether or not the vehicle has arrived at the point guided by the navigation system unit 800, and whether or not the vehicle has stopped is also determined. Whether the vehicle has stopped is determined by information from the own vehicle information input unit 400 (vehicle speed, pulse output from the vehicle speed sensor 420, or signal from the parking switch 410). If the determination result of step S110 is NO, the process proceeds to step S107, and if the determination result of step S110 is YES, the process proceeds to step S111.

  In step S111, it is determined whether or not the vehicle has stopped at a safe place. Such a safe place stop determination asks the driver that the nearby traffic is not obstructed, and confirms by pressing a confirmation button or the like of GUI display on the display 610. If the determination result of step S111 is NO, the process proceeds to step S107, and if the determination result of step S110 is YES, the process proceeds to step S112.

  In step S112, the driver is asked whether AED treatment is necessary. The question as to whether an AED treatment is necessary is to have the driver press the consent button (or a passenger) because the final decision to execute the AED treatment is the responsibility of the passenger.

  If the personal information file 920 is preliminarily agreed with automatic operation as personal information, the personal information file 920 can be set to pass an inquiry as to whether an AED treatment is necessary. However, even if such a setting is made, it is preferable that the GUI screen appears on the display 610 so that the cancellation can be made before the AED operation signal is transmitted in the next step. In order to prevent an excessive physical influence due to automatic operation, it may be set such that an electric shock is not applied three times or more in the AED treatment.

  If the result of determination in step S112 is NO (reply that AED treatment is not required, or no response for a predetermined time with respect to n or more calls), the process proceeds to step S115, and the process ends in step S115. If the result of the determination in step S112 is YES (AED required), the process proceeds to step S113.

  In step S113, an AED operation signal output is issued to the AED unit 300 with a built-in seat belt, and AED treatment is performed. The output of the AED operation signal may be configured to output by voice that the countdown starts. At this time, an appropriate countdown time is about 30 seconds. In order to prevent an electric shock, an audio warning may be given to prompt the passenger to go out of the vehicle. Further, such a setting may be set as a default, and may be changed during the AED treatment.

  In step S114, the AED operation information in the seat belt built-in AED unit 300 is recorded (log acquisition is performed). In this AED operation information recording, the accumulated heart rate data, AED treatment operation, and the like are recorded in the traveling / operation recording log 910. It is appropriate to handle the log acquired in this way as information that the external communication output unit 700 notifies of external transmission in the next step S107. Information transmission destinations to which the external communication output unit 700 transmits information include a home, a medical center, a management center, a home server, and a nearby vehicle using a transmission / reception function.

  According to the biometric information acquisition device as described above, it is possible to prevent operation while driving and to provide information and guidance on safe operation location, so that it can be used exclusively in the vehicle in a safe state without adversely affecting the surrounding traffic situation. AED can work. In addition, according to the biometric information acquisition apparatus, secondary disasters can be prevented, and safety can be given not only to the vehicle occupants but also to their families and related parties. Moreover, according to the biometric information acquisition apparatus, it is possible to perform notification of emergency occurrence information such as execution of AED treatment.

  In the embodiment described above, the configuration in which the heart rate sensor electrodes 210 and 220 are provided in the driver's seat 10 and the AED electrodes 310 and 320 are provided in the driver's seat belt 20 has been described. The present invention also includes application to other passenger seats.

  Next, another embodiment of the present invention will be described. FIG. 7 is a diagram showing a flowchart regarding processing of the biological information acquiring apparatus according to another embodiment.

  When the driver is aware that there is a problem with the health condition of the person, the convenience is enhanced by omitting the steps such as asking the driver in the previous embodiment. Whether or not to provide a step for inquiring the driver or the like can be set in the personal information file 920.

  In the flowchart of FIG. 7, when the process of the biometric information acquisition apparatus is started in step S200, the process proceeds to step S201, and the driver's personal information file is read from the personal information file 920. A setting change interrupt or the like can be executed between step S200 and step S201 as necessary. In the personal information file 920 of the present embodiment, it is assumed that there is a description that the AED procedure is to be used promptly when it is necessary.

  The setting change interrupt is for accepting a reset or change of the personal information by a key input unit (not shown). Such a change operation can be performed by remote operation through communication or GUI display on the screen of the display 610.

  Next, in step S <b> 202, biometric data is read from the heartbeat information acquisition unit 200. Here, the reading of the biological data is to read the electrocardiogram and heartbeat data (electrocardiogram / heart rate) from the heartbeat sensor electrodes 210 and 220. At this time, if it cannot be read due to disturbance noise or an error, it is recorded that it has not been measured.

In step S203, the mind and body state estimation process is executed. The mind and body state estimation process is a process for estimating an emergency state based on the heart rate acquired by the heart rate information acquisition unit 200, the face temperature of the driver acquired by a sensor (not shown), and the respiratory rate. In this psychosomatic state estimation process, individual information is absorbed, and the determination threshold value uses personal information (obtained by referring to the personal information file 920) + absolute value (for example, the heart rate threshold value 200 cannot be set as an impossible value). (Up to the maximum threshold can be set in 3 steps)
In step S204, it is determined whether an arrhythmia has occurred in the driver or whether the driver is in a cardiac arrest state, based on the psychosomatic state estimation result in step S203. If the result of determination in step S204 is N, the process proceeds to step S202. If the result of determination in step S204 is Y, the process proceeds to step S205.

  In step S205, a warning is output to the driver. Such a warning output to the driver issues a message such as “It is determined that there is a problem with the heart, but is there a problem?”. The inquiry method is performed by voice output from the speaker 620 and GUI output display on the display 610.

  In the subsequent step S206, an alarm and information on occurrence of an emergency are output. The alarm and emergency information output in this step are the voice output to the vehicle, the information transmission to the outside using the external communication output unit 700, the abnormality occurrence output to the nearby vehicle (flashing of the brake lamp, hazard lamp, Etc.). In addition, information transmission destinations to which the external communication output unit 700 transmits information include a home, a medical center, a management center, a home server, and a nearby vehicle using a transmission / reception function.

  In step S207, navigation destination search / guidance start is executed. In the navigation destination search / automatic guidance start, the navigation system unit 800 searches for a stoppable location closest to the current location of the vehicle and automatically starts guidance. Such a stoppable place is a place where the vehicle can be safely stopped for performing the AED treatment. Examples include a roadside stop for highways, SAPA guidance, a shoulder stop for urban areas, the nearest hospital, plaza / parking area, and the like.

  In step S208, navigation information recording / communication output is executed. In the navigation information recording / communication output step, the external communication output unit 700 is used to transmit the navigation information calculated in step S208 (information on where to guide and where to stop) to the outside. Send output. The processing in this step is repeatedly executed until various function groups are reset or canceled from the menu on the display 610 screen.

  In step S209, it is determined whether or not the vehicle has stopped at a safe place. Such a safe place stop determination asks the driver that the nearby traffic is not obstructed, and confirms by pressing a confirmation button or the like of GUI display on the display 610. If the determination result of step S209 is NO, the process proceeds to step S206, and if the determination result of step S209 is YES, the process proceeds to step S210.

  In step S210, it is determined whether N or more electric shocks have already been applied by the AED electrodes 310 and 320 of the seat belt built-in AED unit 300. Such a number N is set in the personal information file 920 in advance. If the result of the determination in step S210 is Y, the process proceeds to step S213, and the process ends in step S213. If the result of determination in step S210 is N, the process proceeds to step S211.

  In step S211, an AED operation signal output is issued to the seat belt built-in AED unit 300 to perform AED treatment. The output of the AED operation signal may be configured to output by voice that the countdown starts. At this time, an appropriate countdown time is about 30 seconds. In order to prevent an electric shock, an audio warning may be given to prompt the passenger to go out of the vehicle. Further, such a setting may be set as a default, and may be changed during the AED treatment.

  In step S212, AED operation information in the AED unit 300 with a built-in seat belt is recorded (a log is acquired). In this AED operation information recording, the accumulated heart rate data, AED treatment operation, and the like are recorded in the traveling / operation recording log 910. It is appropriate to handle the log acquired in this way as information notified by the external communication output unit 700 in the next step S206. Information transmission destinations to which the external communication output unit 700 transmits information include a home, a medical center, a management center, a home server, and a nearby vehicle using a transmission / reception function.

  According to the above biometric information acquisition apparatus, it is not necessary to attach an AED specially even when the vehicle is being boarded. Therefore, the AED can be easily operated and even if the vehicle is being boarded. Since the AED can be used in this case, the vehicle occupant can be given a sense of security. In addition, according to the biometric information acquisition device, it is possible to prevent operation while driving and provide information and guidance on safe operation locations, so that the in-vehicle AED can be safely operated without adversely affecting the surrounding traffic conditions. You can work. In addition, according to the biometric information acquisition apparatus, secondary disasters can be prevented, and safety can be given not only to the vehicle occupants but also to their families and related parties. In addition, according to the biometric information acquisition apparatus of another embodiment, since a countermeasure is taken when the driver is aware that there is a problem with the health condition of the person, the convenience of the in-vehicle AED is enhanced.

  In the other embodiments described above, the configuration in which the heart rate sensor electrodes 210 and 220 are provided in the driver's seat 10 and the AED electrodes 310 and 320 are provided in the driver's seat belt 20 has been described. The present invention also includes application to other passenger seats of the vehicle.

  In the present embodiment, the steering 40 has been described as an example of the vehicle equipment to be brought into contact with the driver or other passengers for grounding. However, the present invention is not limited to such equipment and is present in the vehicle compartment shown in FIG. Other vehicle equipment can be sewn with the conductive thread 44. That is, in the present invention, the vehicle equipment that sews the conductive thread 44 as the ground of the biometric information acquisition device includes steering, seat seat surface, seat back surface, headrest, door lining, armrest, opening / closing handle, dashboard , Consoles, shift levers, interior carpets, and any combination thereof.

  Since the conductive thread 44 is sewn into the various vehicle equipment as described above, the conductive thread 44 can reliably contact the driver and function as the ground of the biological information acquisition device.

1 is an external perspective view of a steering that is a vehicle accessory according to an embodiment of the present invention. It is an external appearance perspective view of a driver's seat periphery of the biometric information acquisition apparatus grounded by the vehicle equipment which concerns on embodiment of this invention. It is a figure which shows typically the whole biometric information acquisition apparatus earth | grounded by the vehicle equipment which concerns on embodiment of this invention. It is a figure which shows the principal part of the circuit structure of the biometric information acquisition apparatus earth | grounded by the vehicle equipment which concerns on embodiment of this invention. It is a figure which shows the outline of a block structure of the biometric information acquisition apparatus earth | grounded by the vehicle equipment which concerns on embodiment of this invention. It is a figure which shows the flowchart regarding the process of a biometric information acquisition apparatus. It is a figure which shows the flowchart regarding the process of the biometric information acquisition apparatus which concerns on other embodiment. It is a figure which shows the vehicle equipment which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Driver's seat, 20 ... Driver's seat belt, 21 ... First stage amplifier for first electrode, 25 ... Coaxial cable for first heart rate sensor electrode, 30 ... Second heart rate Sensor electrode 31... First stage amplifier for second heart rate sensor electrode 35. Coaxial cable for second heart rate sensor electrode 40. Steering 44 a and 44 b Conductive thread 45. ..Earth cable, 50... Second stage amplifier section, 51... Amplifier, 52... Ipass filter, 53. Electrocardiogram information acquisition unit, 210, 220 ... first and second heart rate sensor electrodes, 300 ... AED unit with built-in seat belt, 310, 320 ... AED electrode, 400 ... own vehicle information input unit 410 ... Parkin Switch, 420 ... Vehicle speed sensor, 500 ... AED operation switch, 600 ... Determination result output unit, 610 ... Display, 620 ... Speaker, 700 ... External communication output unit, 710 ..Communication interface unit, 720 ... Vehicle control / information interface unit, 800 ... Navigation system unit, 810 ... Navigation system, 820 ... Navigation system database, 900 ... Storage unit, 910 ..Running / operation log, 920 ... personal information file

Claims (1)

Steering used in a vehicle equipped with a biological information acquisition device that electrically acquires a passenger's biological information, wherein the conductive thread is threaded in a spiral around the outside,
The steering, wherein the conductive yarn is used as a ground of the biological information acquisition device .

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