KR20170079508A - Apparatus and method for acquiring biometric information of driver or passenger - Google Patents

Apparatus and method for acquiring biometric information of driver or passenger Download PDF

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Publication number
KR20170079508A
KR20170079508A KR1020150190175A KR20150190175A KR20170079508A KR 20170079508 A KR20170079508 A KR 20170079508A KR 1020150190175 A KR1020150190175 A KR 1020150190175A KR 20150190175 A KR20150190175 A KR 20150190175A KR 20170079508 A KR20170079508 A KR 20170079508A
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detection unit
information
frequency information
heart rate
vibration
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KR1020150190175A
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Korean (ko)
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신길현
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(주)앤트연구소
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Priority to KR1020150190175A priority Critical patent/KR20170079508A/en
Publication of KR20170079508A publication Critical patent/KR20170079508A/en

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    • 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
    • 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 
    • A61B5/0507—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  using microwaves or terahertz waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/082—Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7271—Specific aspects of physiological measurement analysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • B60N2002/4485—

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physiology (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Psychiatry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Transportation (AREA)
  • Cardiology (AREA)
  • Mechanical Engineering (AREA)
  • Radiology & Medical Imaging (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pulmonology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

The present invention relates to an apparatus and method for acquiring biometric information of a vehicle occupant, comprising a first detection unit for detecting biometric information of a vehicle occupant, a second detection unit for detecting vibration information of a seat occupied by the occupant, And a controller for acquiring at least one of the heart rate and the breath rate of the occupant based on the detection result of the first detector and the second detector.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for acquiring biometric information of a vehicle occupant,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for acquiring biometric information of a vehicle occupant, and more particularly, to an apparatus and method of acquiring biometric information of a vehicle occupant that acquires a heart rate and a breathing number of a passenger boarding a vehicle.

BACKGROUND ART [0002] As the electric field technology of a vehicle develops, functions such as drowsiness driving prevention function, driver's health condition warning function, and the like are used in order to grasp the driving state by using the driver's biometric information and perform control or warning of the vehicle.

In order to smoothly perform these functions, it is essential to accurately determine the driver's condition. In order to achieve this, it is required to accurately detect the driver's biometric information.

However, in the case of a vehicle, vibrations caused by internal environment such as the road surface state and internal devices such as an engine are transmitted to the driver through the driver's seat. Since such vibration lowers the accuracy of the biometric information measurement, There is a problem that the reliability of the measurement is deteriorated when the method is directly applied to the vehicle.

On the other hand, the background art of the present invention is disclosed in Korean Patent Laid-open Publication No. 10-2015-0114781 (Oct.

An object of the present invention is to provide an apparatus and method for acquiring a biometric information of a vehicle occupant, which can accurately detect the heart rate and the breathing number of a passenger boarding a vehicle.

The apparatus for acquiring biometric information of a vehicle occupant according to the present invention comprises: a first detection unit for detecting biometric information of a vehicle occupant; A second detection unit for detecting vibration information of a seat occupied by the occupant; An oscillation cutoff portion for separating the second detection portion from the vibration of the vehicle; And a controller for acquiring at least one of the heart rate and the breath count of the occupant based on the detection results of the first detection unit and the second detection unit.

In the present invention, the first detecting unit and the second detecting unit are configured to send a pulse to a target object, and collect the waveform reflected by the target object.

In the present invention, the first detecting unit and the second detecting unit include a UWB (Ultra Wide Band) radar.

In the present invention, the control unit may convert at least one of the reflected wave collected through the first detecting unit and the second detecting unit into frequency information, and compare the converted frequency information to calculate at least one of the heart rate and the breath count do.

In the present invention, the control unit subtracts the frequency information of the reflected wave collected through the second detection unit from the frequency information of the reflected wave collected through the first detection unit to obtain frequency information from which the vibration component is removed, Extracting a peak component of a predetermined frequency band from the removed frequency information, and calculating at least one of the heart rate and the breath rate.

In the present invention, the first detecting unit is installed in the back of the seat.

A method of acquiring biometric information of a vehicle occupant according to the present invention is a method in which a control unit detects biometric information of a vehicle occupant through a first detection unit and detects vibration information of a seat occupied by the occupant through a second detection unit, And acquiring at least one of the heart rate and the breath count of the occupant based on the detection results of the first detection unit and the second detection unit.

In the present invention, the step of acquiring at least one of the heart rate and the respiration rate includes: converting the reflected waves collected through the first and second detection units into frequency information, respectively, by the control unit; And calculating the at least one of the heart rate and the breath rate by comparing the converted frequency information with the controller.

In the present invention, the step of calculating at least one of the heart rate and the respiration rate may include calculating frequency information of the reflected wave collected through the second detecting unit from the frequency information of the reflected wave collected through the first detecting unit, Obtaining frequency information from which the components have been removed; And calculating the at least one of the heart rate and the breath rate by extracting a peak component of a predetermined frequency band from the frequency information from which the vibration component is removed.

The apparatus and method for acquiring biometric information of a vehicle occupant according to the present invention detect biometric information of a vehicle occupant through a first detection unit and detect vibration information of a seat occupied by a passenger through a second detection unit separated from the vibration of the vehicle , The heart rate and the breath count of the passenger are obtained based on the detection results of the first detection unit and the second detection unit, thereby improving the accuracy thereof.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention; FIG.
2 is an exemplary view for explaining an apparatus for acquiring a living body information of a vehicle occupant according to an embodiment of the present invention.
3 is an exemplary view showing frequency information of a reflected wave collected through a first detection unit of a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention.
4 is a diagram illustrating an example of a frequency information acquisition method in which a vibration component of a vehicle occupant's biometric information acquisition device is removed according to an embodiment of the present invention.
5 is an exemplary view for explaining a heart rate and a breathing rate calculating method of a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating a method of acquiring biometric information of a vehicle occupant according to an embodiment of the present invention.

Hereinafter, an embodiment of an apparatus and method for acquiring biometric information of a vehicle occupant according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a block diagram showing a configuration of a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating an example of a biometric information obtaining apparatus for a vehicle occupant according to an embodiment of the present invention. FIG. 3 is an exemplary view illustrating frequency information of a reflected wave collected through a first detection unit of a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention. FIG. FIG. 5 is a view illustrating an example of a frequency information acquisition method in which a vibration component of a vehicle occupant's biometric information acquisition device is removed. FIG. 5 illustrates a method of calculating a heart rate and a breath rate of a vehicle occupant's biometric information acquisition device according to an embodiment of the present invention The biometric information acquiring device of the vehicle occupant according to the present embodiment will be described with reference to FIG.

As shown in FIG. 1, a vehicle occupant's biometric information obtaining apparatus according to an embodiment of the present invention includes a controller 100, a first detector 110, and a second detector 120.

The first detection unit 110 can detect the biometric information of the vehicle occupant. That is, as shown in FIG. 2, the first detection unit 110 can send a pulse to a target object (a passenger) and collect the waveform reflected by the object. At this time, the first detection unit 110 may collect reflected waves for a predetermined time.

2, the first detection unit 110 may include a UWB (Ultra Wide Band) radar (first UWB radar 111), and may be configured to accurately collect reflected waves by the occupant's body. (Not shown).

In the present invention, the passenger includes both a driver and a passenger (passenger).

The second detection unit 120 can detect the vibration information of the seat occupied by the occupant. 2, the second detecting unit 120 transmits pulses to the object (seat) in the same manner as the first detecting unit 110, collects the waveform reflected by the object, You can collect it for hours. The second detection unit 120 may include a second UWB radar 121.

The second detection unit 120 can be separated by the vibration of the vehicle to accurately detect the vibration information of the seat. This is achieved by the vibration isolation unit 130 that supports the second detection unit 120 from the vehicle floor surface 142 . The vibration isolator 130 may be constructed in the form of a damper, a suspension, or the like, but is not limited thereto. Therefore, various structures may be employed to prevent the second detector 120 from being affected by vehicle vibration.

The second detection unit 120 can accurately detect the vibration information of the seat through the vibration isolation unit 130 and can be installed to detect the vibration of the seat bottom surface 141 in particular. That is, by detecting the vibration of the seat bottom surface 141, the possibility of interference between the second detection unit 120 and the first detection unit 110 can be reduced.

The control unit 100 may obtain at least one of the heart rate and the breath rate of the occupant based on the detection results of the first detection unit 110 and the second detection unit 120. [

Specifically, the control unit 100 converts the reflected waves collected through the first detection unit 110 and the second detection unit 120 into frequency information, and compares the converted frequency information to obtain at least one of the heart rate and the breath count Can be calculated.

3, when only the reflected wave collected by the first detection unit 110 is converted into frequency information and used, the distinction is made between the vibration frequency component generated by the occupant and the vibration frequency component generated by the vehicle It is impossible to extract the occupant's heart rate and respiratory rate.

Therefore, the control unit 100 converts the reflected wave collected through the second detecting unit 120 (that is, the reflected wave generated by the vibration of the vehicle) into frequency information, and outputs the frequency information of the reflected wave collected by the first detecting unit 110 The heart rate and the breath count can be calculated.

For example, as shown in FIG. 4, the controller 100 subtracts the frequency information of the reflected wave collected through the second detector 120 from the frequency information of the reflected wave collected through the first detector 110, The frequency information from which the components are removed can be obtained.

Further, the controller 100 may calculate at least one of the heart rate and the breath rate by extracting a peak component of a predetermined frequency band from the frequency information from which the acquired vibration component is removed.

That is, as shown in FIG. 4, since the frequency range in which the respiration of a person generally has and the frequency range in which the heartbeat of a person generally has been determined, the heart rate and the breath count can be calculated by detecting a peak component within this range .

Meanwhile, in the frequency conversion process, the controller 100 may perform a frequency analysis of the reflected waveform using a fast Fourier transform (FFT) method or the like.

FIG. 6 is a flowchart for explaining a method of acquiring biometric information of a vehicle occupant according to an embodiment of the present invention. Referring to FIG. 6, a method of acquiring biometric information of a vehicle occupant according to the present embodiment will now be described.

As shown in FIG. 6, the controller 100 transmits a pulse through the first UWB radar 111 (S200) and collects the waveform reflected by the passenger's body (S210). That is, the first UWB radar 111 is installed in the seat back 140 to send a pulse to the occupant, and such a pulse can collect the reflected wave reflected by the occupant.

Then, the controller 100 analyzes the frequency of the reflected waveform collected in step S210 (S220). For example, the control unit 100 may convert the reflected waveform into frequency information using a fast Fourier transform (FFT) method or the like.

At the same time, the control unit 100 transmits a pulse through the second UWB radar 121 (S230), and collects the waveform reflected by the seat (S240). That is, the control unit 100 transmits a pulse to the seat through the second UWB radar 121 separated by the vibration of the vehicle, and such a pulse can collect the reflected wave reflected by the seat.

Then, the controller 100 analyzes the frequency of the reflected waveform collected in step S240 (S250). The control unit 100 may convert the reflected waveform into frequency information in the same manner as in step S220.

After the steps S220 and S250, the control unit 100 removes the frequency information due to the vibration of the vehicle analyzed in the step S250 from the frequency information of the reflected wave by the occupant analyzed in the step S220 (S260). That is, the control unit 100 may subtract the frequency information of the reflected wave collected through the second detection unit 120 from the frequency information of the reflected wave collected through the first detection unit 110 to obtain the frequency information from which the vibration component is removed .

Then, the control unit 100 extracts the heartbeat and respiration of the passenger (S270). That is, the controller 100 may calculate at least one of the heart rate and the breath rate by extracting a peak component of a predetermined frequency band from the frequency information from which the vibration component obtained in the step S260 is removed.

As described above, the apparatus and method for acquiring biometric information of a vehicle occupant according to an embodiment of the present invention detect biometric information of a vehicle occupant through a first detecting unit, detect biometric information of a vehicle occupant through a second detecting unit, The vibration information is detected, and the heart rate or respiration rate of the occupant is obtained based on the detection results of the first detection unit and the second detection unit, thereby improving the accuracy thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

100:
110: first detection unit
111: 1st UWB radar
120: second detection section
121: 2nd UWB radar
130:
140: seat back
141: Seat bottom
142: vehicle floor

Claims (10)

A first detection unit for detecting biometric information of a vehicle occupant;
A second detection unit for detecting vibration information of a seat occupied by the occupant;
An oscillation cutoff portion for separating the second detection portion from the vibration of the vehicle; And
And a control unit for acquiring at least one of the heart rate and the breath count of the occupant based on the detection results of the first detection unit and the second detection unit.
The method according to claim 1,
Wherein the first detection unit and the second detection unit transmit pulses to a target object and collect waveforms reflected by the target object.
3. The method of claim 2,
Wherein the first detection unit and the second detection unit include a UWB (Ultra Wide Band) radar.
3. The method of claim 2,
Wherein the control unit converts at least one of the heart rate and the breath rate by converting the reflected waves collected through the first detection unit and the second detection unit into frequency information and comparing the converted frequency information, The biometric information acquisition device comprising:
5. The method of claim 4,
Wherein the control unit subtracts the frequency information of the reflected wave collected through the second detection unit from the frequency information of the reflected wave collected through the first detection unit to obtain frequency information from which the vibration component is removed, Extracts a peak component of a predetermined frequency band from the information, and calculates at least one of the heart rate and the breath rate.
The method according to claim 1,
Wherein the first detection unit is installed on the back of the seat.
The control unit detects the biometric information of the vehicle occupant through the first detection unit and detects the vibration information of the seat occupied by the occupant through the second detection unit separated from the vibration of the vehicle; And
And the controller acquires at least one of the heart rate and the breath count of the occupant based on the detection results of the first detection unit and the second detection unit.
8. The method of claim 7,
Wherein the first detection unit and the second detection unit transmit pulses to a target object and collect waveforms reflected by the target object.
9. The method of claim 8,
Wherein the step of acquiring at least one of the heart rate and the breath rate comprises:
Converting the reflected waves collected through the first detecting unit and the second detecting unit into frequency information, respectively; And
And comparing the converted frequency information with the control information to calculate at least one of the heart rate and the respiration rate.
10. The method of claim 9,
Wherein the step of calculating at least one of the heart rate and the breath rate comprises:
The control unit subtracting the frequency information of the reflected wave collected through the second detection unit from the frequency information of the reflected wave collected through the first detection unit to obtain the frequency information from which the vibration component is removed; And
Wherein the controller extracts a peak component of a predetermined frequency band from the frequency information from which the vibration component is removed to calculate at least one of the heart rate and the breath rate.
KR1020150190175A 2015-12-30 2015-12-30 Apparatus and method for acquiring biometric information of driver or passenger KR20170079508A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024041791A1 (en) * 2022-08-25 2024-02-29 Continental Automotive Technologies GmbH System and method for controlling vehicle settings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024041791A1 (en) * 2022-08-25 2024-02-29 Continental Automotive Technologies GmbH System and method for controlling vehicle settings

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