JP6597524B2 - Biological information recording device - Google Patents

Description

  The present invention relates to a biological information recording apparatus that records biological information of a vehicle occupant.

  2. Description of the Related Art Conventionally, a technology is known that is mounted on a vehicle, detects biological information such as the occupant's pulse, records it for a predetermined time, and notifies the outside when an event such as an accident occurs. For example, Patent Document 1 discloses a driving recorder that can accurately generate a trigger for storage in accordance with the traveling state, traveling environment, and the like of a vehicle. The driving recorder includes a motion parameter measurement unit, a camera, a video temporary storage unit, a trigger generation unit that generates a trigger when a predetermined threshold is exceeded, a video storage registration unit, and a driving situation of the vehicle. Threshold shift determination information acquisition means for acquiring information for shifting the threshold value, and threshold shift means for shifting the predetermined threshold value to the high frequency side or the low frequency side based on the information acquired by the threshold value shift determination information acquisition means Prepare. The threshold shift determination information acquisition unit includes a heart rate detection sensor that detects the heart rate of the driver of the vehicle, a biometric information acquisition unit that acquires perspiration amount information from the perspiration sensor that detects the perspiration amount as biometric information, and the like. .

  Patent Document 2 discloses a vehicle control system that enables objective evaluation of the cause and process of an accident by information stored in a storage means. The vehicle control system includes a plurality of control units that perform various controls of the vehicle, a physical information control unit, and control area communication means that can transmit or receive information from each control unit. The vehicle control system controls one control unit to place information on the control area communication means, while controlling the information on the physical information control unit to be put on the control area communication means, and is connected to the control area communication means. Non-volatile storage means is further included. When the vehicle control system places one or more pieces of information out of predetermined acceleration information and occupant restraint device operation information on the control area communication means, the information over a predetermined time before and after the time when the information is loaded. And control to store information on the heart rate in the storage means.

  Patent Document 3 discloses a vehicle data recording device and a vehicle accident notification device that can confirm the physical state of an occupant who is driving even after an accident has occurred. The vehicle data recording device includes a body wearing terminal that detects a vital sign of the vehicle driver by being attached to the body of the vehicle driver, a terminal communication unit that receives a detection result of the body wearing terminal, and a vehicle driver The terminal communication unit receives the state determination unit that determines whether or not the vehicle is in a normal state in which it is less likely to experience stress during driving, and the state determination unit determines that the state determination unit is in a normal state. And an event data recorder that records the detection result as normal data for a predetermined time. In addition, the vehicle accident notification device and the vehicle data recording device and an external communication unit that notifies a predetermined external organization when an accident occurs and transmits normal data recorded in the event data recorder to the external organization. Have

  Patent Document 4 discloses a biological state monitoring apparatus that can accurately determine the degree of danger in the user's biological information. The biological state monitoring apparatus includes a biological information acquisition unit that acquires biological information including an electrocardiogram waveform and a pulse wave from a user, an arrhythmia detection unit that detects an arrhythmia from the electrocardiogram waveform, and a pulse wave from the pulse wave corresponding to the arrhythmia. Pulse wave feature quantity extracting means for extracting feature quantities, (A) the type and / or time of arrhythmia detected by the arrhythmia detection means, and (B) pulse wave feature quantities extracted by the pulse wave feature quantity extracting means or changes thereof Biological condition determination means for determining the degree of danger in the biological condition of the user using the quantity, and biological information storage means for storing arrhythmia and pulse wave feature quantities. The biological state determination means uses the comparison result between the pulse wave feature quantity within the past specified time stored in the biological information storage means and the pulse wave feature quantity extracted by the pulse wave feature quantity extraction means, Determine the risk level.

  Patent Document 5 discloses a biological signal detection device that detects an occupant's biological signal and prevents deterioration of the accuracy of the biological signal. The biological signal detection apparatus includes a sensor unit that detects the movement of an occupant using a radio wave type non-modulated Doppler sensor, a biological signal extraction unit that extracts an occupant's biological signal based on a phase change of an output of the sensor unit, and a sensor When the reliability of the biological signal is determined based on the estimated distance and the distance calculation unit that calculates the estimated distance between the sensor unit and the occupant based on the integral value of the phase change amount of the output of the unit, and the reliability is low Includes a biological signal output determination unit that stops outputting the biological signal. While the driver is actually driving the vehicle, it is assumed that not only the body movement but also the upper body moves more greatly. For example, operating an air conditioner, a car audio, etc., taking a forward-bent posture in order to secure a field of view in a place with poor visibility, and stretching the upper body in order to stretch muscles that have shrunk during driving, etc. In such a case, the upper body is separated from the backrest of the driver's seat, and there is a high possibility that the displacement of the upper body much larger than the minute displacement due to the heartbeat occurs. Thus, since the processing corresponding to the case where the upper body moves dynamically is not performed, the accuracy of the measured heartbeat may be reduced.

JP 2007-011815 A JP 2008-225827 A JP 2006-085730 A JP 2012-081194 A JP 2010-120493 A

For example, when a non-contact type pulse sensor typified by radio waves is used, a person sitting properly in the seat may move or leave the seat due to the impact of a collision. May end up. In such a case, for example, when a radio wave type pulse sensor is provided on the backrest of the seat, the pulse rate may be erroneously output small. Thus, it is not possible to properly determine the biological state of a person based on the pulse rate output in error.
Accordingly, the present invention provides a biological information recording apparatus that outputs information that can appropriately determine the biological state of an occupant after an accident based on detected biological information such as a pulse rate by grasping the sitting state of the occupant of the vehicle. I will provide a.

In order to solve the above problems, a signal receiving unit that receives a signal that an event has occurred, a biological information detection unit that is attached to the seat and detects the biological information of the seated person without contact, and determines whether or not there is a seated person The living body information detected by the living body information detecting unit and the living body information detecting unit that records the living body information detected by the living body information detecting unit for a predetermined time and erases after the first predetermined time elapses. A biometric information recording apparatus comprising a standard biometric information recording unit that records standard biometric information, the biometric information recording unit stops the erasure process when the signal receiving unit receives a signal. Only when the presence / absence determination unit detects the presence of a seated person, a biological information recording apparatus that records biological information over a second predetermined time is provided.
According to this, it is possible to provide a biological information recording apparatus that can appropriately determine the biological state of an occupant after an accident by recording biological information only when there is a seated person.

In order to solve the above problems, a signal receiving unit that receives a signal that an event has occurred, a biological information detection unit that is attached to the seat and detects the biological information of the seated person without contact, and determines whether or not there is a seated person The living body information detected by the living body information detecting unit and the living body information detecting unit that records the living body information detected by the living body information detecting unit for a predetermined time and erases after the first predetermined time elapses. A biometric information recording apparatus comprising a standard biometric information recording unit that records standard biometric information, the biometric information recording unit stops the erasure process when the signal receiving unit receives a signal. Provided is a biological information recording device that transmits the biological information detected by the biological information detecting unit and the standard biological information recorded by the standard biological information recording unit only when the presence / absence determination unit detects the presence of a seated person Is done.
According to this, a biological information recording apparatus that outputs information that can appropriately determine the biological state of an occupant after an accident by transmitting biological information detected only when there is a seated person and recorded standard biological information Can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, the biological information recording device which outputs the information which can determine appropriately the biological state of the passenger | crew after an accident based on detected biological information, such as a pulse rate, can be provided.

The block diagram of the biometric information recording device of the 1st example concerning the present invention. The flowchart which shows the control method in the biometric information recording device of the 1st example concerning the present invention. The flowchart which shows the control method of the 1st modification in the biometric information recording device of the 1st example concerning the present invention. The flowchart which shows the control method of the 2nd modification in the biometric information recording apparatus of 1st Example which concerns on this invention.

<First Example>
With reference to FIG. 1, the biological information recording apparatus 100 in a present Example is demonstrated. The biometric information recording device 100 is provided in a vehicle, and records biometric information such as the pulse, respiration, and blood pressure of a vehicle occupant including the driver in a case where a collision accident occurs in the vehicle, and is externally recorded. It is a notification. The biological information recording apparatus 100 may be incorporated in a drive recorder that records images outside the vehicle or inside the vehicle for a predetermined period, a running state such as speed and acceleration, and the like.

  The biological information recording apparatus 100 includes a signal receiving unit 10 that receives a signal that an event has occurred, a biological information detection unit 20 that is attached to the seat ST and detects the biological information of the seated person P in a non-contact manner, and the seat ST. The seating presence / absence determination unit 30 that determines the presence / absence of the seated person P, the seating state recording unit 60 that records the presence / absence of the seated person P determined by the seating presence / absence determination unit 30, and the biological information detected by the biological information detection unit 20, respectively. A biometric information recording unit 40 that records for a predetermined time and erases after the first predetermined time has elapsed, and a standard biometric information record that records standard biometric information based on the biometric information detected by the biometric information detection unit 20 Unit 50 and a transmitting unit 70 for transmitting the detected biological information and the recorded standard biological information to the outside.

  The signal receiving unit 10 receives a signal indicating that an event has occurred. An event refers to a situation where an accident has occurred in a vehicle, such as when there is a sudden change in acceleration, when an airbag is deployed, or when a vehicle sensor installed such as a bumper is abnormal. Saying that a collision occurred in a vehicle. Due to the occurrence of the event, the passenger in the vehicle may have moved from the seat ST originally sitting due to the impact. When such an event occurs, it becomes a trigger to stop erasing the record of biometric information and the like to be described later. In this embodiment, the signal receiving unit 10 receives an event from the acceleration sensor SA.

  The biological information detection unit 20 receives biological information such as pulse, respiration, blood pressure, and the like from a non-contact type biosensor SH that is attached to the backrest, seating surface, etc. of the seat ST and detects the biological information of the seated person P in a non-contact manner. To detect. The non-contact type biosensor SH that detects biometric information in a non-contact manner is preferably provided in each seat where an occupant sits, and radiates radio waves toward a part of the body of the seated person P. The reflected wave reflected by the seated person P is received. The radio wave to be irradiated may be any radio wave having a frequency reflected by the skin surface of the living body, but usually a microwave is preferable. The biological information detection unit 20 processes and analyzes the reflected wave received by the non-contact type biological sensor SH, and detects biological information such as heartbeat, respiration, blood pressure and the like from the feature amount.

  The biometric information recording unit 40 has a memory, records the biometric information obtained from the non-contact biosensor SH of each seat and detected by the biometric information detection unit 20 in time series, and for a predetermined time (first time). 1) after the elapse of a predetermined time. In other words, the biometric information recording unit 40 erases what has been recorded before a predetermined time has passed in order to continue recording, for example, when driving is started and recording starts under a certain amount of memory. . As a result, a record of a certain time is always kept going back from the time when the event occurred. Note that “erasing” includes overwriting already recorded biometric information with new biometric information.

  The standard biometric information recording unit 50 calculates standard biometric information based on the biometric information detected by the biometric information detection unit 20 and records it in the memory. The standard biometric information is calculated from the biometric information recorded by the biometric information recording unit 40 as, for example, a past average value within a predetermined time, or by removing the biometric information in an abnormal state in which stress is applied, It is obtained by extracting biometric information and calculating it as a representative value. That is, by obtaining standard biological information obtained by calculating biological information of an occupant in a normal state before the event occurs, it is possible to compare with the biological information of the occupant in an emergency after the event has occurred.

  The seating presence / absence determination unit 30 determines whether or not the seated person P is sitting on the seat ST from the seating sensor SS provided corresponding to the seat ST (the presence or absence of the seated person P). For example, when the seating sensor SS detects the weight of the seated person P and detects a weight exceeding a predetermined weight, the seating sensor SS determines that the seat ST has the seated person P, and vice versa. P is determined to be none. In the present embodiment, the presence / absence determination unit 30 determines the presence / absence of the seated person P based on information from the seating sensor SS, but is not limited thereto. For example, the seat presence / absence determination unit 30 may determine that there is no seated person P in the seat ST when there is no biometric information recorded in the biometric information recording unit 40 after the vehicle starts driving.

  The seating state recording unit 60 has a memory, and records in the memory the presence or absence of the seated person P determined by the seating presence / absence determination unit 30 corresponding to each seat in a time series, and for a predetermined time (first time) Delete after a predetermined time). That is, the seating state recording unit 60, like the biometric information recording unit 40, continuously records when a predetermined amount of time elapses, for example, when driving is started and recording starts under a certain amount of memory. Erase previously recorded data. As a result, a record of a certain time is always kept going back from the time when the event occurred.

  The transmitting unit 70 transmits the biometric information recorded in the biometric information recording unit 40, the standard biometric information recorded in the standard biometric information recording unit 50, and the like for output from the biometric information recording apparatus 100 to the outside. When an event occurs, the transmission unit 70 transmits directly / indirectly to a mechanism that requires the occupant's biological information, for example, a mechanism for performing emergency response in the event of an accident. The transmission unit 70 may have a telephone line for direct transmission to the outside, or a CAN (Controller Area) for transmission indirectly by a communication device mounted on the vehicle for transmission outside the vehicle. A wired network such as (Network) may be used.

  A control method in the biological information recording apparatus 100 will be described with reference to FIG. S in the flowchart means a step. In S100, the biological information recording apparatus 100 starts detection in the non-contact biological sensor SH, the seating sensor SS, the acceleration sensor SA, and the like. The biometric information recording unit 40 and the seating state recording unit 60 are recorded in the biometric information and the seating state recording unit 60 that have already been recorded in the biometric information recording unit 40 before receiving a signal that an event has occurred in S102. The information on the presence / absence of the seated person P can be updated or deleted.

  In S104, the biometric information detection unit 20 detects the pulse rate, which is one of the biometric information, based on the information of the non-contact biosensor SH of each seat ST. In S106, the seating presence / absence determination unit 30 determines the presence / absence of the seated person P based on the information of the seating sensor SS of each seat ST. In S108, the biometric information recording unit 40 and the standard biometric information recording unit 50 update the record of the standard pulse rate calculated by adding the pulse rate detected by the biometric information detection unit 20 and the pulse rate just detected. To do. In S110, the seating state recording unit 60 updates the record of the presence or absence of the seated person P determined by the seating presence / absence determination unit 30.

  In S112, the signal receiving unit 10 checks whether or not a signal indicating that an event such as a sudden change in acceleration has occurred has been received from the acceleration sensor SA. If not received, the biological information recording apparatus 100 repeats the steps of S104 to S110, and continues recording in time series about the detected pulse rate and the presence or absence of the seated person P. When the signal is received, the biometric information recording unit 40 and the seating state recording unit 60 are recorded in the biometric information and the seating state recording unit 60 recorded in the biometric information recording unit 40 before receiving the signal in S114. The information on the presence / absence of the seated person P cannot be updated. Therefore, biometric information or the like recorded before receiving the signal is not lost after receiving the signal and remains in the record.

  In S116, the biological information detection unit 20 detects the pulse rate based on the information of the non-contact type biological sensor SH of each seat ST, as before receiving the signal. In S118, the seating presence / absence determination unit 30 determines the presence / absence of the seated person P based on the information of the seating sensor SS of each seat ST, as before receiving the signal. In S120, the biological information recording unit 40 records the pulse rate detected by the biological information detection unit 20, that is, adds it to the pulse rate before receiving the signal.

  In S122, the seating state recording unit 60 records the presence / absence of the seated person P determined by the seating presence / absence determining unit 30, that is, adds the information on the presence / absence of the seated person P before receiving the signal. In step S124, the biological information recording apparatus 100 checks whether a predetermined time (second predetermined time) has elapsed. If the predetermined time has not elapsed, the biological information recording apparatus 100 repeats steps S116 to S122, and continues recording in time series about the detected pulse rate and the presence or absence of the seated person P. If the predetermined time has elapsed, the process is terminated.

  The biometric information recording device 100 detects a biometric information and a seated person corresponding to the seat ST that acquired the biometric information detected for a predetermined time of 30 minutes (first predetermined time) immediately before an event such as a collision accident occurs. The presence or absence of P is left after an event occurs so that it can be output to the outside. Furthermore, the biometric information recording apparatus 100 records the biometric information detected for a predetermined time (second predetermined time) of, for example, 5 minutes immediately after the occurrence of the event so that it can be output to the outside. That is, when the signal receiving unit 10 receives the signal, the biometric information recording device 100 stops the erasure process and records the biometric information for the second predetermined time, The seating state recording unit 60 records the presence / absence of seating corresponding to the recording of each biological information.

  In this way, before and after the event occurs, the biometric information recording unit 40 and the seating state recording unit 60 record the biometric information in each seat ST and the presence or absence of the seated person P corresponding thereto, so that the passengers after the accident The biological information recording apparatus 100 that can appropriately determine the biological state can be provided. For example, if a seated person and a pulse are detected before the event, and a pulse is detected that there is a seated person after the event, it can be determined that there is a survivor in the seat even after an event such as an accident. In addition, a pulse is detected as being a seated person before the event, but if a seated person is detected after the event but no pulse is detected, the seated person P sitting in the seat ST may be dead or bradycardia. It can be judged that there is. If neither the seated person nor the pulse after the event is detected, it can be determined that the seated person P sitting in the seat ST may have been thrown out of the seat ST. Furthermore, if the seated person P is detected before the event but the pulse is not detected, it can be determined that there is a possibility of death or bradycardia before the event.

<First Modification of First Embodiment>
A modification of the control method in the biological information recording apparatus 100 will be described with reference to FIG. In order to avoid overlapping with the above-described embodiment, different parts will be mainly described. Since S200 to S214 are the same as S100 to S114, the description is omitted. In S214, after the biometric information recording unit 40 and the seating state recording unit 60 make the biometric information recorded before receiving the signal and the information on the presence / absence of the seated person P incapable of being updated, In S216, the presence / absence of the seated person P is checked.

  When the presence of the seated person P is detected, the biological information detection unit 20 detects the pulse rate in S218 based on the information of the non-contact type biosensor SH of each seat ST, as before receiving the signal. In S220, the biological information recording unit 40 records the pulse rate detected by the biological information detection unit 20, that is, adds it to the pulse rate before receiving the signal. If it is detected in S216 that there is no seated person P, the pulse rate at that time cannot be trusted, so the following is not performed, and the process ends.

  In step S222, the biological information recording apparatus 100 checks whether a predetermined time (second predetermined time) has elapsed. If the predetermined time has not elapsed, the biological information recording apparatus 100 repeats the steps S218 to S220, and continues to record the detected pulse rate in time series. If the predetermined time has elapsed, the process is terminated.

  That is, when the signal receiving unit 10 receives a signal, the biometric information recording apparatus 100 stops the erasing process, and only when the seated presence / absence determining unit 30 detects the presence of the seated person P. The biometric information is recorded for a second predetermined time. Thus, only when there is a seated person P, that is, by recording only reliable biological information, it is possible to provide the biological information recording apparatus 100 that can appropriately determine the biological state of the occupant after the accident.

<Second modification of the first embodiment>
With reference to FIG. 4, the modification in the control method in the biometric information recording device 100 is demonstrated. In order to avoid overlapping with the above-described embodiment, different parts will be mainly described. Since S300 to S318 are the same as S200 to S218, the description thereof is omitted. In S318, after the biometric information detection unit 20 detects the pulse rate based on the information of the non-contact biosensor SH of each seat ST, the transmission unit 70 transmits the pulse rate and the recorded standard biometric information. Send the pulse rate to the outside. If it is detected in S316 that there is no seated person P, the pulse rate and the standard pulse rate are not transmitted because the pulse rate at that time cannot be trusted. Alternatively, the presence / absence determination unit 30 may detect the presence / absence of the seated person P and transmit the information.

  That is, when the signal receiving unit 10 receives the signal, the biological information recording unit 40 stops the erasing process, and only when the seated presence / absence determining unit 30 detects the presence of the seated person P, the biological information detecting unit 20 And the standard biometric information recorded by the standard biometric information recording unit 50 are transmitted. In this way, a biological information recording apparatus that outputs information that can appropriately determine the biological state of an occupant after an accident by transmitting biological information that is detected only when there is a seated person P and recorded standard biological information 100 can be provided.

  For example, the biological information recording apparatus 100 includes the standard biological information of the average value of the pulse rate of the seated person P detected for a predetermined time (first predetermined time) of, for example, 30 minutes immediately before the collision accident occurs, and the collision accident. The pulse rate of the seated person P immediately after the occurrence of the problem is transmitted together. Thereby, it is possible for an emergency organization receiving such information to obtain useful and accurate occupant biological information. Further, when the standard biological information is a pulse rate in a normal range (for example, the pulse rate is 30 to 200) and the pulse rate detected by the biological information detection unit 20 immediately after the collision accident is, for example, an abnormal range of 201 or more, It can be determined that the seated person P has a possibility of tachycardia.

  In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible. That is, although the present invention has been particularly illustrated and described with respect to particular embodiments, it should be understood that the present invention has been described in terms of quantity, quantity, and amount without departing from the scope and spirit of the present invention. In other detailed configurations, various modifications can be made by those skilled in the art.

DESCRIPTION OF SYMBOLS 100 Biological information recording device 10 Signal receiving part 20 Biometric information detection part 30 Seating presence determination part 40 Biological information recording part 50 Standard biological information recording part 60 Seating state recording part 70 Transmitting part SH Non-contact type biosensor SS Seating sensor SA Acceleration Sensor ST Seat

Claims (2)

A signal receiver for receiving a signal that an event has occurred;
A biological information detection unit that is attached to the seat and detects the biological information of the seated person without contact;
A seating presence / absence determination unit that determines the presence / absence of a seated person,
A biometric information recording unit that records the biometric information detected by the biometric information detection unit for a predetermined period of time and erases the biometric information after the first predetermined period of time;
Based on the biological information detected by the biological information detection unit, a standard biological information recording unit that records standard biological information;
In a biological information recording apparatus comprising:
When the signal receiving unit receives the signal, the biometric information recording unit stops the erasure process, and only when the seated presence / absence determining unit detects the presence of a seated person, the biological information recording unit stops over a second predetermined time. A biological information recording apparatus for recording biological information. A signal receiver for receiving a signal that an event has occurred;
A biological information detection unit that is attached to the seat and detects the biological information of the seated person without contact;
A seating presence / absence determination unit that determines the presence / absence of a seated person,
A biometric information recording unit that records the biometric information detected by the biometric information detection unit for a predetermined period of time and erases the biometric information after the first predetermined period of time;
Based on the biological information detected by the biological information detection unit, a standard biological information recording unit that records standard biological information;
In a biological information recording apparatus comprising:
When the signal reception unit receives the signal, the biological information recording unit stops the erasure process, and the biological information detection unit detects only when the presence / absence determination unit detects the presence of a seated person. A biometric information recording apparatus for transmitting biometric information and standard biometric information recorded by the standard biometric information recording unit.