DE102005020847A1 - Device for contactless position determination for motor vehicle passengers, uses detected information for controlling safety and comfort functions in motor vehicle - Google Patents

Device for contactless position determination for motor vehicle passengers, uses detected information for controlling safety and comfort functions in motor vehicle Download PDF

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DE102005020847A1
DE102005020847A1 DE200510020847 DE102005020847A DE102005020847A1 DE 102005020847 A1 DE102005020847 A1 DE 102005020847A1 DE 200510020847 DE200510020847 DE 200510020847 DE 102005020847 A DE102005020847 A DE 102005020847A DE 102005020847 A1 DE102005020847 A1 DE 102005020847A1
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vehicle
sensor unit
parts
motor vehicle
passengers
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Carsten Dr. Koch
Anthimos Prof. Dr. Georgiadis
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Carsten Dr. Koch
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20Means to switch the anti-theft system on or off
    • B60R25/25Means to switch the anti-theft system on or off using biometry
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/01516Passenger detection systems using force or pressure sensing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/0153Passenger detection systems using field detection presence sensors
    • B60R21/01534Passenger detection systems using field detection presence sensors using electromagneticwaves, e.g. infrared
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/0153Passenger detection systems using field detection presence sensors
    • B60R21/01538Passenger detection systems using field detection presence sensors for image processing, e.g. cameras or sensor arrays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/01552Passenger detection systems detecting position of specific human body parts, e.g. face, eyes or hands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/10Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B60R25/1004Alarm systems characterised by the type of sensor, e.g. current sensing means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88Radar or analogous systems specially adapted for specific applications
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, 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
    • A61B5/0205Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/0104Communication circuits for data transmission
    • B60R2021/01081Transmission medium
    • B60R2021/01088Transmission medium wireless
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/0209Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband

Abstract

A device for contactless detection of vital functions of passengers in a motor vehicle, in which information is ascertained and used for determining safety and comfort functions in the motor vehicle. An independent claim is included for a method for contactless detecting vital functions of passengers in motor vehicle.

Description

  • Die Erfindung beschreibt eine Vorrichtung und ein Verfahren zur berührungslosen Erfassung von biometrischen Merkmalen und Vitalfunktionen von Passagieren in einem Kraftfahrzeug, insbesondere des Herzschlags und Atmungsaktivitäten.The The invention relates to a device and a method for non-contact Recording of biometric features and vital functions of passengers in a motor vehicle, in particular the heartbeat and respiratory activities.
  • Diese Merkmale und die räumliche Position signifikanter Körperteile im Körperinneren der Passagiere werden genutzt, um diverse Komfort- und Sicherheitssysteme im Fahrzeug zu steuern, wie z.B. Müdigkeitserkennung, Identifizierung/Personalisierung, Out-of-Position Detektion (Airbagsteuerung), Sitzbelegungserkennung (Airbagsteuerung), Insassenklassifikation (Airbagsteuerung), Automatische Kopfstützeneinstellung, Medizinische Herzüberwachung, Diebstahlwarnanlage, etc.These Characteristics and the spatial Position of significant body parts inside the body Passengers are used to various comfort and safety systems in the vehicle, e.g. Fatigue detection, identification / personalization, Out-of-position detection (airbag control), seat occupancy detection (Airbag control), occupant classification (airbag control), automatic headrest adjustment, Medical heart monitoring, Anti-theft alarm system, etc.
  • Für den Fahrzeuginnenraum sind vielfältige Verfahren bekannt zur Detektion einer Person auf den Fahrer und/oder Beifahrersitz, so. z.B.
    • • Gewichtsbasierte Systeme o Gewichtsverteilung o Absolutgewicht der Person
    • • Kapazitive Systeme
    • • Video basierte Systeme
    For the vehicle interior a variety of methods are known for detecting a person on the driver and / or passenger seat, so. eg
    • • Weight-based systems o Weight distribution o Absolute weight of the person
    • • Capacitive systems
    • • Video based systems
  • Besonders die Systeme, die auf der Klassifikation der Insassen eines Kraftfahrzeugs auf Bildverarbeitung basieren (maschinelle Videoanalyse), versprechen in der nahen Zukunft eine Vielzahl von innovativen Anwendungen
    • • Personendetektion/Sitzbelegungserkennung (Sitz belegt/Sitz leer)
    • • Insassenklassifikation (Kindersitz/kleine oder grosse Person) zur optimierten Airbagsteuerung
    • • Out-of-position Detektion (OOP) zur optimierten Airbagsteuerung
    • • Personenidentifikation/Personalisierung (Fahrer/Beifahrer A oder B)
    • • Müdigkeitserkennung des Fahrers zur Unfallvermeidung
    In particular, the systems based on the classification of the occupants of a motor vehicle on image processing (machine video analysis), promise in the near future, a variety of innovative applications
    • • Person detection / seat occupancy recognition (seat occupied / seat empty)
    • • Occupant classification (child seat / small or large person) for optimized airbag control
    • • Out-of-position detection (OOP) for optimized airbag control
    • • Personal identification / personalization (driver / co-driver A or B)
    • • Fatigue detection of the driver for accident prevention
  • Kaum ein System (oder auch Sensor) ist derart flexibel in der Anwendung im Innenraum eines Kraftfahrzeugs wie optische Systeme. Insbesondere Systeme, die auf der Auswertung von digitalen Bildern (maschinelle Bildverarbeitung) basieren, eröffnen neue Anwendungsgebiete. Jedoch speziell optische Systeme weisen hierbei vielfältige Probleme im autonomen Fahrzeug auf, z.B.
    • • Extreme Lichtverhältnisse (Lichtintensitäten, Lichtdynamik und Schwankungen)
    • • Verdeckung der Optik durch Fremdobjekte
    • • Verdeckung zur Klassifizierung und Identifizierung essenzieller Merkmale der Objekte und Personen auf den Sitzen (Kindersitze, Personen) durch Accessoires wie z.B. Decken, Brillen, Bärte, Hüte, spezielle Kleidung, etc.
    Hardly any system (or sensor) is so flexible in the application in the interior of a motor vehicle as optical systems. In particular, systems based on the evaluation of digital images (machine vision) open up new fields of application. However, especially optical systems in this case have a variety of problems in the autonomous vehicle, eg
    • • Extreme light conditions (light intensities, light dynamics and fluctuations)
    • • Obscuring the optics by foreign objects
    • • Cover for classifying and identifying essential features of the objects and persons on the seats (child seats, persons) through accessories such as blankets, spectacles, beards, hats, special clothing, etc.
  • Diese Probleme führen zu gesteigerten Systemkosten, die insbesondere im Kfz. zu minimieren sind, durch z.B. den Einsatz optimierter Hardware, wie z.B. hochdynamischen Bildsensoren, leistungsstarker Beleuchtung, etc.These Cause problems to increased system costs, especially in motor vehicles. to minimize by e.g. the use of optimized hardware, e.g. highly dynamic Image sensors, powerful lighting, etc.
  • Zudem ist für eine Vielzahl der genannten Anwendungen jeweils ein spezieller Bildsensor in einer optimierten Einbauposition im Innenraum eines Fahrzeugs nötig.moreover is for a variety of the applications mentioned each have a special image sensor in an optimized installation position in the interior of a vehicle necessary.
  • Aufgrund der Geometrie eines Innenraums eines Kraftfahrzeugs, z.B. Automobil, ist es nach aktuellem Entwicklungsstand notwendig, z.B. zur Personenidentifikation ein Kamerasystem zu verwenden, das einen möglichst frontalen, ungetrübten und hochauflösenden Blick auf das Gesicht des Fahrers ermöglicht, um z.B. die für ihn gespeicherten Komforteinstellungen (Sitzposition, Radio, Telefoneinstellungen, etc.) zu aktivieren.by virtue of the geometry of an interior of a motor vehicle, e.g. Automobile, it is necessary according to the current state of development, e.g. for personal identification To use a camera system, the frontal as possible, unclouded and high-resolution view on the driver's face allows by e.g. the for stored comfort settings (seating position, radio, telephone settings, etc.).
  • Zur optimierten Airbagsteuerung der bis zu einem Dutzend im Fahrzeug verbauten Airbags und weiterer Rückhaltesysteme, ist jedoch eine eher zentrale Position im Innenhimmel des Fahrzeugs optimal.to Optimized airbag control of up to a dozen in the vehicle installed airbags and other restraint systems, However, it is a rather central position in the headliner of the vehicle optimal.
  • Die Literatur beschreibt eine Lösung dieses Problems, wobei insbesondere die Nachteile einer optischen Lösung, insbesondere der Verdeckung und diversen Einbaupositionen, adressiert werden.The Literature describes a solution This problem, in particular the disadvantages of an optical Solution, especially the concealment and various installation positions, addressed become.
  • Radar basierte Sensoren zur Detektion von Personen in Gebäuden oder unter Schuttbergen sind bekannt. Je nach Trägerfrequenz dringt Radar-Modulation durch Zeitungen, sogar durch Wände und kleinere Geröllhaufen.radar based sensors for the detection of persons in buildings or under rubble mountains are known. Depending on the carrier frequency penetrates radar modulation through newspapers, even through walls and smaller boulders.
  • Die Verwendung von Radar basierten Sensoren zur Airbagsteuerung ist ebenfalls in Patentschriften beschrieben.The Use of radar based sensors for airbag control is also described in patents.
  • In Patent WO0242124 wird ein UWB-Radar verwendet, um eine Kontur der Objekte auf dem Beifahrersitz zu erstellen und diese dann zu Klassifizieren. Diese Klassifizierung (Person, Kindersitz, etc.) dient zur adaptiven Steuerung des Air bag. Das UWB-Radar wird vorzugsweise am Armaturenbrett des Fahrzeugs montiert, um eine möglichst komplette Sicht auf den Sitz zu haben.In In patent WO0242124, a UWB radar is used to form a contour of the Create objects in the front passenger seat and then classify them. This classification (person, child seat, etc.) is used for adaptive Control of the air bag. The UWB radar is preferably located on the dashboard of the Vehicle mounted to one as possible complete view of the seat.
  • Die signaltechnische Unterscheidung einer Kontur eines Kindersitzes von beliebig aufgestapelte Objekte auf dem Beifahrersitz ist jedoch sehr fehleranfällig und für ein Sicherheitssystem daher kritisch. Es ist kaum absehbar, welche Arten von Kindersitzen mit diversen Ausführungsformen auf der Welt bereits produziert wurden, oder im Laufe eines Fahrzeuglebens noch produziert werden. Alle diese Sitze müssten einem Kontur basierten Klassifizierungssystem eingelernt werden. Ebenso verhält es sich mit der Bekleidung, Accessoires und Körperhaltung von erwachsenen Personen. Auch hier ist die äußere Erscheinung (Kontur) sehr variabel.The signaling distinction of a contour of a child seat of any stacked objects on the passenger seat, however, is very prone to error and therefore critical for a security system. It is hard to predict what types of child seats with various embodiments in the world already were produced, or are still produced in the course of a vehicle life. All these seats would have to be taught to a contour based classification system. The same applies to the clothing, accessories and posture of adult persons. Again, the external appearance (contour) is very variable.
  • Ein prägnantes Merkmal von Passagieren im Fahrzeug hingegen sind deren Vitalfunktionen, insbesondere der Herzschlag und die Atmung.One succinct The characteristic of passengers in the vehicle, on the other hand, is their vital signs, especially the heartbeat and the breathing.
  • Dies Merkmal wurde in den Patentschriften US20010042977 , US20030136600 und DE10259522 adressiert, die die Anordnung eines Radar basierten Geräts dargestellen, die die Bewegung des Brustbereichs auf geringe Bewegungsmuster analysiert, die typisch sind für Herz- und Atmungsaktivitäten von Lebewesen.This feature was described in the patents US20010042977 . US20030136600 and DE10259522 which presents the location of a radar-based device that analyzes the motion of the chest area for small patterns of movement typical of cardiac and respiratory activities of living beings.
  • Vorteile der ErfindungAdvantages of invention
  • Die vorgestellt Erfindung unterscheidet sich primär dadurch zu dem Stand der Technik, das nicht die Kontur der Objekte und Personen auf den Sitzen ausschlaggebend ist für die Airbagsteuerung, sondern die exakte Position und Signatur eines eventuell vorhandenen Herzschlags oder anderer oder anderer signifikanter Körperteile im Körperinneren der Passagiere.The This invention differs primarily from the state of the art Technique that does not determine the contour of the objects and people on the seats is for the airbag control, but the exact position and signature of a possibly existing heartbeat or other or other significant Body Parts inside the body the passengers.
  • Der elektromagnetische Transiver wird nicht wie bisher vorgeschlagen im Bereich des Armaturenbretts, Instrumententafel oder Innenhimmel platziert, sondern in den Sitz integriert. Durch die Anordnung des Transivers in den Sitzen des Fahrzeugs, vorzugsweise in der Sitzlehne, kann die Variation der relativen Bewegung zwischen Fahrgastzelle und Passagier bedingt durch Sitzhöhen- und Positionsverstellung vernachlässigt werden.Of the electromagnetic Transiver is not proposed as before in the area of the dashboard, instrument panel or roof lining placed but integrated into the seat. Due to the arrangement of the Transivers in the seats of the vehicle, preferably in the seat back, can be the variation of relative movement between passenger compartment and passenger due to seat height and position adjustment neglected become.
  • Weiterhin ist der potentielle Abstand zwischen Transiver und Torso eines Passagiers (mit den sich kontinuierlich bewegenden Organen Herz, Lunge) in einer aufrechten Sitzposition minimiert, sodaß die Signalqualität und damit Signalauflösung maximiert wird. Hierdurch ist es möglich mit vergleichsweise geringer Sendeleistung qualitativ hochwertige Signaturen des Herzschlags oder anderer signifikanter Körperteile im Inneren des Fahrzeuginsassen zu erhalten und eine Vielzahl von Applikationen im Fahrzeug mit einem einzigen, kostengünstigen Sensor zu realisieren:
    • • Müdigkeitserkennung
    • • Identifizierung/Personalisierung durch die Signatur des Herzschlags oder weiterer signifikanter Körperteile im Inneren des Insassen
    • • Out-of-Position Detektion (Unterstützung der Airbagsteuerung)
    • • Sitzbelegungserkennung (Unterstützung der Airbagsteuerung)
    • • Insassenklassifikation (Unterstützung der Airbagsteuerung)
    • • Automatische Kopfstützeneinstellung,
    • • Müdigkeitserkennung
    • • Medizinische Herzüberwachung
    • • Übermittlung von Vitalfunktionen an Rettungskräfte
    • • Diebstahlwarnanlage
    Furthermore, the potential distance between the transient and torso of a passenger (with the continuously moving organs heart, lung) is minimized in an upright seating position, so that the signal quality and thus signal resolution is maximized. This makes it possible with relatively low transmission power to obtain high-quality signatures of the heartbeat or other significant body parts inside the vehicle occupant and to realize a variety of applications in the vehicle with a single, cost-effective sensor:
    • • fatigue detection
    • • Identification / personalization through the signature of the heartbeat or other significant parts of the body inside the occupant
    • • Out-of-position detection (support of the airbag control)
    • • Seat occupancy recognition (support of the airbag control)
    • • occupant classification (support of airbag control)
    • • Automatic headrest adjustment,
    • • fatigue detection
    • • Medical heart monitoring
    • • Transmission of vital signs to rescue teams
    • • Anti-theft alarm system
  • Die Vorteile gegenüber eines Video basierten Systems mit aktiver Beleuchtung sind:
    • • Keine Verdeckung durch Objekte, wie z.B. Zeitungen, etc.
    • • Kein direkter Blick in die Kamera notwendig
    • • komplette berührungslos (kein Fingeradruck, etc.)
    • • Kostengünstig, falls z.B. durch UWB Technik ausgeführt
    • • Geringerer Leistungsverbrauch (Diebstahlwarnanlage)
    The advantages over a video-based system with active lighting are:
    • • No obstruction by objects, such as newspapers, etc.
    • • No direct view of the camera necessary
    • • complete non-contact (no fingerprint, etc.)
    • • Cost-effective, if executed eg by UWB technology
    • • Lower power consumption (anti-theft alarm system)
  • Aus der Relation der Position der Sitzfläche zur Position des Herzens des Insassen können grobe Rückschlüsse über die Sitzposition, Größe und Statur des Insassen gewonnen werden. Diese Informationen können genutzt werden, um diverse Einstellungen im Fahrzeug zu optimieren, oder um eine automatisierte, personenabhängige Grundeinstellung zu realisieren, z.B. für Sitz-, Innen- und Außenspiegeleinstellungen.Out the relation of the position of the seat to the position of the heart of the inmate can rough conclusions about the Seating position, size and stature of the occupant. This information can be used be to optimize various settings in the vehicle, or to realize an automated, person-dependent basic attitude, e.g. For Seat, interior and exterior mirror settings.
  • Weiterhin kann der Sensor dazu eingesetzt werden, um gleichzeitig zur Detektion der Belegung eines Sitzes mit einem Lebewesen, eine Personalisierung anhand der Signatur der aufgenommenen Vitalfunktionen der Passagiere (Herzschlag, Atmung, etc.) der sich im Fahrzeug befindlichen Personen durchzuführen.Farther The sensor can be used to simultaneously detect the occupancy of a seat with a living being, a personalization Based on the signature of the recorded vital functions of the passengers (Heartbeat, breathing, etc.) of persons in the vehicle.
  • Die durch die Personalisierung gewonnenen Informationen können dazu genutzt werden, Zugriff auf verschiedene Informationen oder Einstellmöglichkeiten des Fahrzeugs zu gewähren.The Information obtained through personalization can do so be used, access to various information or settings to grant the vehicle.
  • Die Erkennung der Herzposition kann auch rein passiv erfolgen ohne den Einsatz von Radar oder einem ähnlichen Sensor, z.B. rein Akustisch durch die Verwendung einer Ansammlung von Richtmikrofonen, die ebenfalls die Position des Herzens eines Passagiers im Fahrzeug detektiert, oder anderer Körperteile im Inneren eines Fahrzeuginsassen, die signifikant Körperschall erzeugen.The Detection of the heart position can also be purely passive without the Use of radar or a similar Sensor, e.g. purely acoustically through the use of a collection of directional microphones, which are also the position of the heart of a Passengers detected in the vehicle, or other body parts inside a vehicle occupant, which significantly reduces structure-borne noise produce.
  • Anhand der Zeichnung 1 soll ein Ausführungsbeispiel der Erfindung erläutert werden.Based on the drawing 1 an embodiment of the invention will be explained.
  • Im Sitz des Fahrers oder Beifahrers wurde ein UWB-Radar implementiert, das durch Bewegungsdetektion die Eigenbewegungen der Herzkammern des Insassen detektiert und die räumliche Position, relativ zur Sitzlehne an eine übergeordnete Datenverarbeitung weiterleitet. Anhand der An- oder Abwesenheit eines detektierten Herzschlags wird die Belegung des Sitzes festgestellt. Anhand der Signatur eines eventuell festgestellten Herzschlags (oder Atmungsaktivitäten), in Verbindung mit der detektierten Position wird die Person klassifiziert:
    • (1) leerer Sitz
    • (2) Kind im Kindersitz
    • (3) Kleine Person (5-percentile Frau)
    • (4) Mittlere Person (50-percentile Mann)
    • (5) Große Person (95-percentile Mann)
    In the seat of the driver or passenger, a UWB radar has been implemented, which detects the proper movements of the heart chambers of the occupant by motion detection and the spatial position, relative to the seat back to a higher-level data processing forwards. Based on the presence or absence of a detected heartbeat occupancy of the seat is detected. Based on the signature of any detected heartbeat (or respiratory activity), in conjunction with the detected position, the person is classified:
    • (1) empty seat
    • (2) child in the child seat
    • (3) Small person (5-percentile woman)
    • (4) middle person (50-percentile male)
    • (5) Great person (95-percentile man)
  • Hierbei werden folgende Entscheidungshilfen angewendet:
    • (1) Die Signatur des Herzschlags eines Kleinkindes unterscheidet sich von der Signatur eines Erwachsenen (Frequenz, Amplitude, etc.).
    • (2) Die Position eines detektierten Herzschlags eines Kleinkindes in einem Rückhaltesystem (Kindersitz, Babyschale, etc.) unterscheidet sich signifikant von der Position des Herzens eines Erwachsenen in aufrechter Sitzposition.
    • (3) Die räumliche Position eines Herzen relativ zur Sitzlehne lässt auf die Größe der Person, bzw. deren Statur schließen, wodurch die Einteilung in kleine, mittlere und große Personen erfolgt.
    • (4) Die Auswertung der Historie und der Prediktion der Bewegungsbahn des detektierten Herzens lässt eine frühzeitige Detektion des Eintretens eines Passagiers in kritische Zonen im Fahrzeug (z.B. vor der Austrittsöffnung des Airbag) zu.
    The following decision aids are used:
    • (1) The signature of the heartbeat of an infant differs from the signature of an adult (frequency, amplitude, etc.).
    • (2) The position of a detected heartbeat of an infant in a restraint system (child seat, infant carrier, etc.) is significantly different from the position of the heart of an adult in an upright sitting position.
    • (3) The spatial position of a heart relative to the seat back can close to the size of the person or their stature, whereby the division into small, medium and large persons takes place.
    • (4) The evaluation of the history and the prediction of the movement path of the detected heart allows early detection of the entry of a passenger into critical zones in the vehicle (eg, in front of the exit opening of the airbag).
  • Diese Klassifizierung wird an eine übergeordnete Datenverarbeitungseinheit weitergeleitet und dem Modul zur Airbagsteuerung übergeben, die anhand dieser Daten die Auslösecharakteristika der Rückhaltesysteme im Fahrzeug optimieren kann. Dieser Vorgang erfolgt beim Start des Systems, sowie zyklisch während des Betriebes des Fahrzeugs.These Classification is sent to a parent Forwarded data processing unit and passed to the module for airbag control, based on these data the triggering characteristics the restraint systems in the vehicle can optimize. This process takes place at the start of the Systems, as well as cyclically during the operation of the vehicle.
  • Die detektierte Position des Herzen im Inneren des Insassen und die daraus gefolgerte Größe und Statur wird weiterhin dazu genutzt, die Sitzeinstellungen automatisch, oder auf Wunsch des Insassen, in eine für diese Größe im Vorfeld definierte Position zu verfahren und weitere Einstellungen des Fahrzeugs bezüglich der Größe des Insassen vorzunehmen. Dies wären u.a. die elektrische Ausrichtung der Kopfstütze, Aussenspiegel, sowie des Lenkrads und weiterer Bedienelemente des Fahrzeugs.The detected position of the heart inside the occupant and the Resulting size and stature is still used to automatically adjust the seat settings, or at the request of the occupant, in a position defined for this size in advance to proceed and further settings of the vehicle with respect to Size of the occupant make. These would be et al the electrical alignment of the headrest, exterior mirrors, and the Steering wheel and other controls of the vehicle.
  • Die Signatur der Vitalfunktionen (z.B. Herzschlag oder Atmung) wird durch digitale Signalverarbeitung analysiert, um den derzeitigen Fahrzeugnutzer mit einem bereits dem Fahrzeug bekannten Nutzer abzugleichen. Hierdurch können Komforteinstellungen wie z.B. personenbezogene Radioeinstellungen, Kommunikationseinstellungen (Adressenliste, Navigationsziele, Telefon- und Internetzugriffsrechte), etc. freigeschaltet werden. Auch der Zugriff auf Fahrzeugfunktionen wie z.B. das Starten des Motors oder die automatische Zuordnung von Fahrern und gefahrene Wegstrecke (elektronisches Fahrtenbuch), ist denkbar.The Signature of vital signs (e.g., heartbeat or respiration) analyzed by digital signal processing to the current Align vehicle users with a user already known to the vehicle. This allows Comfort settings such as personal radio settings, Communication settings (address list, navigation destinations, telephone and Internet access rights), etc. are unlocked. Also the Access to vehicle functions such as starting the engine or automatic assignment of drivers and distance traveled (electronic logbook) is conceivable.
  • Sobald das Fahrzeug in eine Parkposition gebracht wurde und die Alarmanlage aktiviert wird, wird die Empfindlichkeit der Bewegungsdetektion des UWB-Radar auf die Detektion gröberer Bewegungen umgeschaltet. Durch den nun aktivierten breiteren Sende- und Empfangsbereich des Radars werden Bewegungen detektiert, die üblicherweise beim unberechtigten Eindringen in den Fahrzeuginnenraum auftreten. Bei einem unautorisierten Eindringen in den Fahrzeuginnenraum wird entweder ein lauter, abschreckender Alarm ausgelöst oder die Information an eine Leitzentrale weitergeleitet. Dies Prinzip kann sowohl für geschlossene als auch offene Kraftfahrzeuge angewendet werden.As soon as the vehicle was placed in a parking position and the alarm system is activated, the sensitivity of the motion detection of the UWB radar on the detection coarser Moves switched. Through the now activated broader transmission and receiving range of the radar, movements are detected, which are usually in the unauthorized intrusion into the vehicle interior occur. at an unauthorized intrusion into the vehicle interior is either a louder, deterrent alarm or information forwarded a control center. This principle can be closed for both as well as open motor vehicles.
  • Obwohl die vorliegende Erfindung anhand eines bevorzugten Ausführungsbeispiels, wie im vorgehenden Abschnitt beschrieben, erläutert wurde, ist sie darauf nicht beschränkt, sondern auf vielfältige Weise modifizierbar.Even though the present invention with reference to a preferred embodiment, as explained in the previous section, she is on it not limited but in many ways modifiable.
  • Die Merkmale der Patentansprüche können im wesentlichen frei miteinander und untereinander kombiniert werden, unbeachtet ihrer Reihenfolge, sofern sie unabhängig voneinander sind.The Features of the claims can in essentially freely combined with each other and with each other, regardless of their order, as long as they are independent of each other.

Claims (13)

  1. Vorrichtung und Verfahren zur berührungslosen Detektion von Vitalfunktionen und zur Ermittlung der räumlichen Lage des Herzen oder anderer signifikanter Körperteile im Körperinneren der Passagiere eines Kraftfahrzeug (im folgenden Sensoreinheit genannt), dadurch gekennzeichnet, das die ermittelten Informationen zur Steuerung von Sicherheits- und Komfortfunktionen im Kraftfahrzeug genutzt werden.Device and method for contactless detection of vital signs and for determining the spatial position of the heart or other significant body parts inside the body of the passengers of a motor vehicle (hereinafter referred to as sensor unit), characterized in that the information used to control safety and comfort functions used in the motor vehicle become.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, das die Implementierung der Sensoreinheit vorzugsweise im Sitz der Insassen erfolgt, jedoch auch in anderen Teilen des Fahrzeuginnenraums, wie z.B. Instrumententafel, Innenhimmel oder Lenkrad erfolgen kann.Method according to claim 1, characterized in that the implementation of the sensor unit preferably in the seat of Inmates take place, but also in other parts of the vehicle interior, such as e.g. Instrument panel, roof liner or steering wheel can be done.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, das anhand der durch die Sensoreinheit ermittelten Anwesenheit und räumlichen Lage des Herzen oder anderer signifikanter Körperteile im Körperinneren der Passagiere durch eine elektronische Datenverarbeitungseinheit auf die Art der Belegung des Sitzes geschlossen wird (z.B. von einem Lebewesen mit Vitalfunktionen belegt/unbelegt, Kind, Kleinkind oder Säugling in einem Rückhaltesystem oder erwachsener Passagier) und das anhand dieser Informationen die Rückhaltesysteme des Fahrzeugs gesteuert werden (Airbag, Gurtstraffer, etc.).A method according to claim 1, characterized in that on the basis of the detected by the sensor unit presence and spatial position of the heart or other significant body parts in the body of the passengers by an electronic Da is closed to the type of occupancy of the seat (eg occupied by a living being with vital functions / unoccupied, child, toddler or infant in a restraint system or adult passenger) and based on this information, the restraint systems of the vehicle are controlled (airbag, belt tensioner, etc .).
  4. Verfahren nach dem vorstehenden Anspruch dadurch gekennzeichnet, das die Daten der Sensoreinheit mit den Informationen einer gewichtssensitiven Messeinheit und/oder eines optischen Sensors zur Klassifizierung der Passagiere kombiniert werden können.Process according to the preceding claim characterized characterized in that the data of the sensor unit with the information a weight-sensitive measuring unit and / or an optical sensor for Classification of passengers can be combined.
  5. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das die Signatur der aufgenommenen Körperfunktionen (z.B. Herzschlag, Atmung) ausgewertet wird, um anhand dieser Signatur und Intensität der Vitalfunktionen zwischen erwachsenen Personen und Kleinkindern, z.B. in Kindersitzen, zu unterscheiden.Method according to one of the preceding claims, characterized marked, which is the signature of the recorded body functions (e.g., heartbeat, respiration) to evaluate this signature and intensity vital signs between adults and infants, e.g. in child seats, to distinguish.
  6. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das die durch die Sensoreinheit aufgenommene Signatur der Körperfunktionen (z.B. Herzschlag, Atmung) ausgewertet wird, um anhand dieser Signatur der Vitalfunktionen zwischen verschiedenen Fahrzeugnutzern zu unterscheiden.Method according to one of the preceding claims, characterized characterized in that the recorded by the sensor unit signature the body functions (e.g., heartbeat, respiration) to evaluate this signature to differentiate the vital signs between different vehicle users.
  7. Verfahren nach dem vorstehenden Anspruch, dadurch gekennzeichnet, das die Unterscheidung verschiedener Fahrzeugnutzer zur Identifikation einzelner Personen genutzt wird, um individuelle Komfortfunktionen zu automatisieren oder auch Zugriffsrechte zu autorisieren (z.B. individuelle Adressenliste, Radiosenderliste, Telefon- und Internetzugriff).Process according to the preceding claim, characterized characterized the distinction of different vehicle users used for the identification of individuals to individual Comfort functions to automate or access rights too authorize (e.g., individual address list, radio station list, Telephone and internet access).
  8. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das anhand der durch die Sensoreinheit ermittelten räumlichen Lage des Herzen oder anderer signifikanter Körperteile im Körperinneren der Passagiere auf die Größe und Statur der Passagiere geschlossen wird und somit Komforteinstellungen im Fahrzeug wie z.B. Verstellung der Kopfstützen, Lenkradposition, Rückspiegel und Sitzhöhe automatisch erfolgen kann.Method according to one of the preceding claims, characterized characterized by the determined by the sensor unit spatial Location of the heart or other significant parts of the body inside the body the passengers on the size and stature the passenger is closed and thus comfort settings in the Vehicle such as Adjustment of headrests, steering wheel position, rear view mirror and seat height can be done automatically.
  9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, das die Sensoreinheit durch ein aktives Verfahren, z.B. durch Aussenden einer elektromagnetischen Welle oder Impuls (Radar), realisiert werden kann, die Bewegungen der relevanten Körperteile im Inneren des Passagiers detektiert, oder das der Messaufnehmer ein passiver Sensor, wie z.B. ein akustischer Messaufnehmer (Mikrofon) sein kann, der den durch relevante Körperteile im Inneren des Passagiers hervorgerufenen Körperschall detektiert und analysiert.Method according to claim 1, characterized in that that the sensor unit by an active method, e.g. by sending out an electromagnetic wave or pulse (radar) realized can be the movements of relevant body parts inside the passenger detected, or that the sensor is a passive sensor, such as e.g. an acoustic sensor (microphone) can be, the through relevant body parts Detected structure-borne noise in the interior of the passenger detected and analyzed.
  10. Verfahren nach dem vorstehenden Anspruch, dadurch gekennzeichnet, das die Ausführung der Sensoreinheit durch räumlich getrennte Sende- und Empfangsmodule (Receiver + Transmitter) oder in einem Modul vereint (Transiver) erfolgen kann.Process according to the preceding claim, characterized marked that the execution the sensor unit by spatially separate transmit and receive modules (Receiver + Transmitter) or combined in one module (Transiver) can be done.
  11. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das der verwendete Messaufnehmer ein UWB-Radar sein kann. 12. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das das Radar als Einzelantennen-Element oder Antennen-Array ausgeführt werden kann.Method according to one of the preceding claims, characterized characterized in that the sensor used is a UWB radar can. 12. The method according to any one of the preceding claims, characterized characterized in that the radar is executed as a single antenna element or antenna array can.
  12. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das der Messbereich und die Empfindlichkeit der Sensoreinheit automatisch derart variiert werden kann, das es nicht nur zur Detektion der geringen Bewegungen und/oder Körperschwingungen, hervorgerufen durch Bewegungen von Körperteilen im Körperinneren, sondern auch als Diebstahlwarnanlage genutzt werden kann und grobe Bewegungen im Fahrzeug detektiert.Method according to one of the preceding claims, characterized characterized by the measuring range and the sensitivity of the Sensor unit can be automatically varied so that it does not only for the detection of small movements and / or body vibrations, caused by movements of body parts in the body, but also can be used as a theft alarm and rough Movements detected in the vehicle.
  13. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, das die Vorrichtung und das Verfahren sowohl für geschlossene als auch offene Kraftfahrzeuge angewendet werden kann.Method according to one of the preceding claims, characterized characterized in that the device and the method are both closed as well as open motor vehicles can be applied.
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