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EP1661101B1 - Device for monitoring the condition of a driver of a vehicle - Google Patents

Device for monitoring the condition of a driver of a vehicle Download PDF

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Publication number
EP1661101B1
EP1661101B1 EP04766510A EP04766510A EP1661101B1 EP 1661101 B1 EP1661101 B1 EP 1661101B1 EP 04766510 A EP04766510 A EP 04766510A EP 04766510 A EP04766510 A EP 04766510A EP 1661101 B1 EP1661101 B1 EP 1661101B1
Authority
EP
European Patent Office
Prior art keywords
driver
vehicle
test stimulus
vehicle driver
test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04766510A
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German (de)
French (fr)
Other versions
EP1661101A1 (en
Inventor
Wolfgang Krautter
Maria Rimini-Doering
Dietrich Manstetten
Tobias Altmueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP1661101A1 publication Critical patent/EP1661101A1/en
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Publication of EP1661101B1 publication Critical patent/EP1661101B1/en
Anticipated expiration legal-status Critical
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/06Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms

Definitions

  • the invention relates to a device for monitoring the condition of a driver according to the preamble of claim 1.
  • a control unit for monitoring a driver's attention is described in which the time taken for a driver to respond to a stimulus generated during driving is measured. This reaction time is compared with given data to determine the degree of attention of the driver.
  • the polling frequency of the system is varied depending on the detected level of attention derived from its response time.
  • US Pat. No. 6,154,123 is a driver condition monitoring system for engine-powered Discloses vehicles that outputs visual or audible signals to the driver and determines the driver's visual, auditory or haptic responses to determine the driver's attention.
  • An electronics unit preferably integrated with existing safety systems of the vehicle, controls the activation of the visual or audible signals and determines appropriate actions based on the driver's response.
  • the system also includes auxiliary sensors that can be used to control and change the function of the system to avoid its unnecessary activation.
  • Both described embodiments have in common that the driver is exposed to a conscious test situation, which may be distracting under certain circumstances.
  • the invention has for its object to provide a device for monitoring the condition of a driver, in which a state test by the driver is relatively less disturbing.
  • the invention is initially based on a device for monitoring the condition of a vehicle driver of a vehicle, comprising means for outputting a test stimulus, such as a test signal or a test question, and an evaluation unit for determining the driver's reaction to the test stimulus.
  • a test stimulus such as a test signal or a test question
  • an evaluation unit for determining the driver's reaction to the test stimulus.
  • a first essential aspect of the invention lies in the fact that the test stimulus is output in a form that is also part could be a request situation to the driver in a conventional Fahrablauf so that the driver aware of the test stimulus perceives, but this does not immediately understand as a test stimulus.
  • the test stimulus is, so to speak, mixed into the normal course of driving a vehicle without immediately attracting attention as a test stimulus.
  • the test stimulus can represent an actual request situation, ie in the course of a drive, a response or reaction is actually required by the vehicle driver. This situation can then be used to test the driver completely hidden.
  • the test stimulus may also be generated extra for the test without requiring the driver to respond to immediate driving.
  • care must be taken that the test stimulus is "camouflaged", as it were, so that the vehicle driver does not immediately feel that he is in a test situation.
  • a test stimulus may be, for example, to request the driver a conscious answer to a question directly addressed to him, such as "Should the navigation route be maintained despite the current traffic situation?", "Should a particular assistance system be activated (eg ACC) or its Parameters are changed? ".
  • These questions could also be part of a conventional driving process, so that the driver is hardly able to identify such questions as test questions and therefore find them disturbing. Rather, the driver assumes that answering the questions are part of the conventional process, which is actually the case, although tested at the same time. In this case can thus test and actual requirement situation are connected in an advantageous manner.
  • the test stimulus is output in a form which unconsciously demands the vehicle driver, in particular knee-jerk reactions. This measure has the advantage that the driver does not immediately see in a test situation, which can be perceived as annoying.
  • This test form may be e.g. are acoustic or visual stimuli to which the driver responds with a physiological reflex (e.g., skin temperature change, head movement, or the like).
  • a physiological reflex e.g., skin temperature change, head movement, or the like.
  • the test stimulus may also comprise a haptic stimulus.
  • a roadway unevenness is simulated by a small deflection on the steering wheel, which provokes a corresponding steering movement to compensate for this disturbance from the driver or required.
  • the figure shows a control circuit shown schematically, which is intended to illustrate the operation of a device according to the invention for monitoring the condition of a vehicle driver.
  • the problem of monitoring the condition of the driver can be understood as a control technology task in which the response to a defined test signal is examined in order to obtain information about the system properties of the controller, in the present case the driver.
  • a change in the system characteristics of the controller by changing the behavior of the driver gives evidence of a changed driver state.
  • 1 denotes a driver state recognition unit.
  • the driver state detection unit 1 outputs a test stimulus via an output device 2 to a vehicle driver 3, which is symbolized by the arrows 1a and 2a.
  • the arrow 3a pointing away from the rectangle standing for the driver clarifies a reaction of the vehicle driver 3, which is detected by a reaction detection unit 4 and passed on to the driver condition recognition unit 1 for evaluation (see arrow 4a).
  • the driver state in the driver condition detection unit 1 is determined. This can trigger a given test stimulus or other action.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Überwachung des Zustandes eines Fahrzeugführers nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for monitoring the condition of a driver according to the preamble of claim 1.

Stand der Technik:State of the art:

Vorrichtungen der einleitend bezeichneten Art sind bereits in verschiedenen Ausführungsformen bekannt geworden.Devices of the type described in the introduction have already become known in various embodiments.

In der internationalen Patentanmeldung WO 96/16830 wird eine Kontrolleinheit zur Überwachung der Aufmerksamkeit eines Fahrers beschrieben, bei welcher die Zeit gemessen wird, die ein Fahrer benötigt, auf einen Stimulus zu reagieren, der während des Fahrens erzeugt wird. Diese Reaktionszeit wird mit vorgegebenen Daten verglichen, um hieraus den Grad der Aufmerksamkeit des Fahrers bestimmen zu können. Die Abfragehäufigkeit des Systems wird in Abhängigkeit vom festgestellten Grad der Aufmerksamkeit, die sich aus seiner Reaktionszeit ableitet, variiert.In the international patent application WO 96/16830 For example, a control unit for monitoring a driver's attention is described in which the time taken for a driver to respond to a stimulus generated during driving is measured. This reaction time is compared with given data to determine the degree of attention of the driver. The polling frequency of the system is varied depending on the detected level of attention derived from its response time.

In dem US-Patent US 6,154,123 ist ein Fahrerzustandsüberwachungssystem für motorbetriebene Fahrzeuge offenbart, das visuelle oder akustische Signale an den Fahrer ausgibt und zur Bestimmung der Aufmerksamkeit des Fahrers visuelle, akustische oder haptische Reaktionen des Fahrers ermittelt. Eine Elektronikeinheit, die vorzugsweise in bestehende Sicherheitssysteme des Fahrzeugs integriert ist, kontrolliert die Aktivierung der visuellen oder akustischen Signale und bestimmt geeignete Vorgehensweisen basierend auf der Reaktion des Fahrers. Das System umfasst außerdem Hilfssensoren, die zur Kontrolle und Veränderung der Funktion des Systems benutzt werden können, um dessen unnötige Aktivierung zu vermeiden.By doing US Pat. No. 6,154,123 is a driver condition monitoring system for engine-powered Discloses vehicles that outputs visual or audible signals to the driver and determines the driver's visual, auditory or haptic responses to determine the driver's attention. An electronics unit, preferably integrated with existing safety systems of the vehicle, controls the activation of the visual or audible signals and determines appropriate actions based on the driver's response. The system also includes auxiliary sensors that can be used to control and change the function of the system to avoid its unnecessary activation.

Beide beschriebenen Ausführungsformen haben gemeinsam, dass der Fahrer einer bewussten Testsituation ausgesetzt ist, die unter Umständen als störend empfunden werden kann.Both described embodiments have in common that the driver is exposed to a conscious test situation, which may be distracting under certain circumstances.

Aufgabe und Vorteile der Erfindung:Object and advantages of the invention:

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Überwachung des Zustands eines Fahrzeugführers bereitzustellen, bei welcher ein Zustandstest vom Fahrzeugführer vergleichsweise weniger störend empfunden wird.The invention has for its object to provide a device for monitoring the condition of a driver, in which a state test by the driver is relatively less disturbing.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 und 2 gelöst. In den Unteransprüchen sind vorteilhafte und zweckmäßige Weiterführungen der Erfindung angegeben.This object is solved by the features of claim 1 and 2. In the subclaims advantageous and expedient developments of the invention are given.

Die Erfindung geht zunächst von einer Vorrichtung zur Überwachung des Zustandes eines Fahrzeugführers eines Fahrzeugs aus, die Mittel zur Ausgabe eines Teststimulus, wie z.B. eines Testsignals oder einer Testfrage sowie eine Auswerteeinheit zur Feststellung der Reaktion des Fahrzeuglenkers auf den Teststimulus umfasst. Ein erster wesentlicher Aspekt der Erfindung liegt nun darin, dass der Teststimulus in einer Form ausgegeben wird, die auch Teil einer Anforderungssituation an den Fahrzeugführer in einem herkömmlichen Fahrablauf sein könnte, so dass der Fahrzeugführer den Teststimulus zwar bewusst wahrnimmt, diesen jedoch nicht unmittelbar als Teststimulus versteht. Der Teststimulus wird sozusagen in den normalen Ablauf des Führen eines Fahrzeugs eingemischt, ohne sofort als Teststimulus aufzufallen. Der Teststimulus kann dabei gleichzeitig eine tatsächliche Anforderungssituation darstellen, d.h. im Fahrablauf ist tatsächlich vom Fahrzeuglenker eine Antwort bzw. Reaktion erforderlich. Diese Situation kann dann genutzt werden, um den Fahrzeugführer vollkommen verdeckt zu testen. Der Teststimulus kann jedoch auch extra für den Test erzeugt werden, ohne dass vom Fahrzeugführer eine Reaktion im Hinblick auf den unmittelbaren Fahrablauf erforderlich wäre. Dabei ist jedoch erfindungsgemäß darauf zu achten, dass der Teststimulus sozusagen "getarnt" wird, so dass der Fahrzeuglenker nicht sofort das Gefühl hat, dass er sich in einer Testsituation befindet. Diese Vorgehensweisen haben den Vorteil, dass der Teststimulus nicht in einer Weise als störend empfunden wird, als dass der Fahrzeugführer Gedanken in einer Art hegt, "Warum werde ich getestet?'" oder "Schon wieder ein Test ! ".The invention is initially based on a device for monitoring the condition of a vehicle driver of a vehicle, comprising means for outputting a test stimulus, such as a test signal or a test question, and an evaluation unit for determining the driver's reaction to the test stimulus. A first essential aspect of the invention lies in the fact that the test stimulus is output in a form that is also part could be a request situation to the driver in a conventional Fahrablauf so that the driver aware of the test stimulus perceives, but this does not immediately understand as a test stimulus. The test stimulus is, so to speak, mixed into the normal course of driving a vehicle without immediately attracting attention as a test stimulus. At the same time, the test stimulus can represent an actual request situation, ie in the course of a drive, a response or reaction is actually required by the vehicle driver. This situation can then be used to test the driver completely hidden. However, the test stimulus may also be generated extra for the test without requiring the driver to respond to immediate driving. However, according to the invention, care must be taken that the test stimulus is "camouflaged", as it were, so that the vehicle driver does not immediately feel that he is in a test situation. These approaches have the advantage that the test stimulus is not perceived as disturbing in a way that the driver has thoughts of "Why am I being tested?" Or "Another test!".

Ein Teststimulus kann z.B. darin bestehen, dem Fahrzeugführer eine bewusste Antwort auf eine direkt an ihn gerichtete Frage abzufordern, wie z.B. "Soll die Navigationsroute trotz der aktuellen Verkehrslage beibehalten werden?'" , "Soll ein bestimmtes Assistenzsystem aktiviert werden (z.B. ACC) oder dessen Parameter verändert werden?". Diese Fragen könnten auch Teil eines herkömmlichen Fahrablaufs darstellen, so dass der Fahrzeugführer kaum in der Lage ist, derartige Fragen als Testfragen zu identifizieren und sie deshalb als störend zu empfinden. Vielmehr geht der Fahrzeugführer davon aus, dass die Beantwortung der Fragen zum herkömmlichen Fahrablauf gehören, was tatsächlich auch so ist, obgleich gleichzeitig getestet wird. In diesem Fall kann somit Test und tatsächliche Anforderungssituation vorteilhaft verbunden werden.A test stimulus may be, for example, to request the driver a conscious answer to a question directly addressed to him, such as "Should the navigation route be maintained despite the current traffic situation?", "Should a particular assistance system be activated (eg ACC) or its Parameters are changed? ". These questions could also be part of a conventional driving process, so that the driver is hardly able to identify such questions as test questions and therefore find them disturbing. Rather, the driver assumes that answering the questions are part of the conventional process, which is actually the case, although tested at the same time. In this case can thus test and actual requirement situation are connected in an advantageous manner.

Bei einem weiteren wesentlichen Kerngedanken der Erfindung wird der Teststimulus in einer Form ausgegeben, die dem Fahrzeugführer unbewusst, insbesondere reflexartige Reaktionen abfordert. Auch diese Maßnahme hat den Vorteil, dass der Fahrzeugführer sich nicht sofort in einer Testsituation sieht, was als lästig empfunden werden kann.In a further essential core idea of the invention, the test stimulus is output in a form which unconsciously demands the vehicle driver, in particular knee-jerk reactions. This measure has the advantage that the driver does not immediately see in a test situation, which can be perceived as annoying.

Bei dieser Testform kann es sich z.B. um akustische oder visuelle Reize handeln, auf die der Fahrer mit einem physiologischen Reflex (z.B. Hauttemperaturänderung, Kopfbewegung oder dergleichen) antwortet bzw. reagiert.This test form may be e.g. are acoustic or visual stimuli to which the driver responds with a physiological reflex (e.g., skin temperature change, head movement, or the like).

In einer weiteren vorteilhaften Ausgestaltung der Testform, bei welchem das System auf eine unbewusste Reaktion wartet, kann der Teststimulus auch einen haptischen Reiz umfassen. Beispielsweise wird durch eine kleine Auslenkung am Lenkrad eine Fahrbahnunebenheit simuliert, die eine entsprechende Lenkbewegung zur Kompensation dieser Störung vom Fahrzeugführer provoziert bzw. erforderlich macht.In a further advantageous embodiment of the test form, in which the system is waiting for an unconscious reaction, the test stimulus may also comprise a haptic stimulus. For example, a roadway unevenness is simulated by a small deflection on the steering wheel, which provokes a corresponding steering movement to compensate for this disturbance from the driver or required.

Bei den jeweiligen Tests ist es nicht nur von Interesse, dass der Fahrzeugführer überhaupt auf den Teststimulus reagiert, sondern vor allem wie dies geschieht, z.B. wie schnell hat sich der Kopf bewegt, wie groß und wie schnell waren die Lenkkorrekturen, usw.. Daher wird überdies vorgeschlagen, dass Mittel zur Feststellung der Art und weise der Erbringung der Reaktion des Fahrzeugführers vorgesehen sind. In Abhängigkeit vom Ergebnis der Reaktionseinstufung können dann Rückschlüsse auf den Grad der Wachsamkeit des Fahrzeugführers gezogen werden.In the respective tests, it is not only of interest that the driver responds to the test stimulus at all, but above all how this happens, eg how fast the head has moved, how big and how fast were the steering corrections, etc .. Therefore moreover, it is proposed that means be provided for determining the manner of providing the driver's reaction. Depending on the result of the reaction classification conclusions can then be drawn on the degree of vigilance of the driver.

Zeichnungen:Drawings:

Ein Ausführungsbeispiel der Erfindung ist in der einzigen Figur dargestellt.An embodiment of the invention is shown in the single figure.

Beschreibung des Ausführungsbeispiels:Description of the embodiment:

Die Figur zeigt einen schematisch dargestellten Regelkreis, der die wirkungsweise einer erfindungsgemäßen Vorrichtung zur Überwachung des Zustandes eines Fahrzeugführers verdeutlichen soll. Das Problem der Überwachung des Fahrerzustandes kann als Regelungstechnikaufgabe verstanden werden, bei welcher die Antwort auf ein definiertes Testsignal untersucht wird, um Informationen über die Systemeigenschaften des Reglers, im vorliegenden Fall der Fahrzeugführer, zu erhalten. Eine Änderung der Systemeigenschaften des Reglers durch eine Änderung des Verhaltens des Fahrzeugführers gibt Hinweise auf einen veränderten Fahrerzustand.The figure shows a control circuit shown schematically, which is intended to illustrate the operation of a device according to the invention for monitoring the condition of a vehicle driver. The problem of monitoring the condition of the driver can be understood as a control technology task in which the response to a defined test signal is examined in order to obtain information about the system properties of the controller, in the present case the driver. A change in the system characteristics of the controller by changing the behavior of the driver gives evidence of a changed driver state.

In Figur 1 ist mit 1 eine Einheit zur Fahrerzustandserkennung bezeichnet. Die Fahrerzustandserkennungseinheit 1 gibt einen Teststimulus über eine Ausgabevorrichtung 2 an einen Fahrzeugführer 3 aus, was durch die Pfeil 1a und 2a symbolisiert ist. Der vom für den Fahrzeugführer stehenden Rechteck wegweisenden Pfeil 3a verdeutlicht eine Reaktion des Fahrzeugführers 3, die von einer Reaktionserfassungseinheit 4 erfasst und an die Fahrerzustandserkennungseinheit 1 zur Auswertung weitergegeben wird (siehe Pfeil 4a).In FIG. 1, 1 denotes a driver state recognition unit. The driver state detection unit 1 outputs a test stimulus via an output device 2 to a vehicle driver 3, which is symbolized by the arrows 1a and 2a. The arrow 3a pointing away from the rectangle standing for the driver clarifies a reaction of the vehicle driver 3, which is detected by a reaction detection unit 4 and passed on to the driver condition recognition unit 1 for evaluation (see arrow 4a).

In Abhängigkeit von der Reaktion des Fahrzeugführers 3 wird der Fahrerzustand in der Fahrerzustandserkennungseinheit 1 ermittelt. Dies kann einen vorgegebenen Teststimulus oder andere Maßnahmen auslösen.Depending on the reaction of the vehicle driver 3, the driver state in the driver condition detection unit 1 is determined. This can trigger a given test stimulus or other action.

Claims (3)

  1. Apparatus (1, 2, 4) for monitoring the condition of a driver (3) of a vehicle, comprising means (2) for outputting a test stimulus and also an evaluation unit (1, 4) for determining the reaction of the vehicle driver to the test stimulus, with the test stimulus being output in a form which could also be part of a request situation made of the vehicle driver in a conventional vehicle procedure, with the result that the vehicle driver consciously perceives the test stimulus but does not immediately understand it to be a test stimulus, characterized in that a deliberate response to a question which is directly addressed to the vehicle driver is required from the said vehicle driver.
  2. Apparatus according to one of the preceding claims, characterized in that means (1) for determining the manner in which the reaction of the vehicle driver (3) is made is provided.
  3. Method for monitoring the condition of a driver (3) of a vehicle, with a test stimulus being output, and with a reaction of the vehicle driver to the test stimulus being determined, with the test stimulus being output in a form which could also be part of a request situation made of the vehicle driver in a conventional vehicle procedure, with the result that the vehicle driver consciously perceives the test stimulus but does not immediately understand it to be a test stimulus, characterized in that a deliberate response to a question which is directly addressed to the vehicle driver is required from the said vehicle driver.
EP04766510A 2003-08-25 2004-08-17 Device for monitoring the condition of a driver of a vehicle Expired - Lifetime EP1661101B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003138945 DE10338945A1 (en) 2003-08-25 2003-08-25 Device for monitoring the condition of a vehicle driver
PCT/EP2004/051809 WO2005022479A1 (en) 2003-08-25 2004-08-17 Device for monitoring the condition of a driver of a vehicle

Publications (2)

Publication Number Publication Date
EP1661101A1 EP1661101A1 (en) 2006-05-31
EP1661101B1 true EP1661101B1 (en) 2007-08-22

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WO (1) WO2005022479A1 (en)

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DE102006050017B4 (en) * 2006-10-24 2019-07-11 Volkswagen Ag Motor vehicle with a sensor arrangement for determining a condition of a driver of the motor vehicle
DE102007003694B3 (en) * 2007-01-25 2008-04-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Mono tone recognizing and preventing device for use during driving of e.g. lorry, has inquiring device to inquire tone sensed by driver, and device to deactivate automation device, when monotone values of driver exceeds threshold value
JP5056067B2 (en) 2007-02-26 2012-10-24 株式会社デンソー Dozing alarm device
DE102010034599A1 (en) 2010-08-16 2012-02-16 Hooshiar Mahdjour Method for recognition of tiredness of driver of vehicle, involves indicating tiredness of the driver, if difference between normative data and current data is exceeds threshold value
DE102012213965A1 (en) * 2012-08-07 2014-02-13 Bayerische Motoren Werke Aktiengesellschaft Method for ensuring sufficient efficiency of rider of motor car, involves evaluating, reducing and maintaining performance of particular task depending on evaluation of degree of automation, and stopping vehicle based on evaluation
DE102013206212A1 (en) 2013-04-09 2014-10-09 Ford Global Technologies, Llc Method for controlling a vehicle with temporarily autonomous vehicle guidance and control device
DE102013010546B4 (en) 2013-06-15 2023-02-02 Volkswagen Aktiengesellschaft Determining a transfer characteristic of a steering system of a vehicle and a setting for a driver drowsiness detection device
DE102014008791A1 (en) 2014-06-11 2015-12-17 Frank Munser-Herzog Driver assistance system and method for detection of fatigue and microsleep avoidance of a driver
DE202014004917U1 (en) 2014-06-11 2014-07-14 Frank Munser-Herzog Driver assistance system for detecting fatigue and avoiding the sleep of a driver
DE102017210825B4 (en) * 2017-06-27 2022-07-07 Ford Global Technologies, Llc Method and device for increasing the attentiveness of a driver of a vehicle, vehicle and computer program product
CN113760752A (en) * 2021-08-18 2021-12-07 一汽奔腾轿车有限公司 Real vehicle testing method and device of driver state monitoring system

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US6265978B1 (en) * 1996-07-14 2001-07-24 Atlas Researches, Ltd. Method and apparatus for monitoring states of consciousness, drowsiness, distress, and performance
DE60109750D1 (en) * 2000-02-15 2005-05-04 Cesium Ab Katrineholm METHOD AND DEVICE FOR MONITORING THE ATTENTION OF THE DRIVER

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WO2005022479A1 (en) 2005-03-10
DE10338945A1 (en) 2005-03-24
EP1661101A1 (en) 2006-05-31
DE502004004761D1 (en) 2007-10-04

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