WO2002096694A1 - Procede et dispositif servant a caracteriser l'etat du conducteur d'un vehicule automobile - Google Patents

Procede et dispositif servant a caracteriser l'etat du conducteur d'un vehicule automobile Download PDF

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Publication number
WO2002096694A1
WO2002096694A1 PCT/DE2002/000833 DE0200833W WO02096694A1 WO 2002096694 A1 WO2002096694 A1 WO 2002096694A1 DE 0200833 W DE0200833 W DE 0200833W WO 02096694 A1 WO02096694 A1 WO 02096694A1
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WO
WIPO (PCT)
Prior art keywords
driver
recorded
motor vehicle
vehicle
state variables
Prior art date
Application number
PCT/DE2002/000833
Other languages
German (de)
English (en)
Inventor
Michael Mendel
Maria Rimini-Doering
Hans-Oliver Ruoss
Wolfgang Hiller
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2002096694A1 publication Critical patent/WO2002096694A1/fr

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Classifications

    • 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
    • B60K28/06—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 responsive to incapacity of driver

Definitions

  • the invention relates to a method ' for characterizing the state of the driver of a motor vehicle, according to the type defined in the preamble of claim 1, and an apparatus for carrying out the method.
  • Driver can be estimated based on parameters measured in the vehicle. For example, this includes interactive systems that require a driver to take certain input actions while driving, which is used to determine the driver's ability to drive. There are also systems that the
  • Capture eyelid beat frequency via an ideo camera with downstream image data evaluation can be used to draw conclusions about the driving ability of the driver of a motor vehicle.
  • Systems are also known in which the driver's facial movements are observed via a video camera and conclusions are drawn as to the state of his driving ability.
  • an input variable is obtained by observing and characterizing the condition of the driver of a motor vehicle, which are used to control intelligent human-machine interfaces and for assistance systems, particularly with regard to driving safety and comfort.
  • the driver's condition and the possible deviation from an individual uncritical condition, in particular with regard to stress, fatigue and health, should be recorded and evaluated by measuring suitable key parameters with the help of suitable sensors.
  • the detection of critical driver states and the transfer of the driver-vehicle system to a safe state should make a significant contribution to driving safety and safety in traffic.
  • the method according to the invention for characterizing the condition of the driver of a motor vehicle, with the characterizing features of claim 1, has the advantage over the prior art that the appropriate driver monitoring significantly increases traffic safety, especially in older vehicles. Road users, is reached.
  • driver assistance systems such as ACC and EAS
  • the driver monitoring according to the invention can also be used for convenient monitoring of the driver's state of health together with a telemonitoring of the attending doctor.
  • the respective state of the driver can be used as an input variable for suitable actuators for controlling the well-being of the driver.
  • this is principally achieved in that driver monitoring is carried out, physiological state variables of the driver are recorded as key parameters for this, a comparison of the recorded data with stored data and / or a direct evaluation of the recorded data is carried out and that acts on control units of the motor vehicle as a function of the determined result is to take appropriate measures to maintain a safe state of the driver and / or the motor vehicle.
  • brain waves are used as a parameter of the physiological state variables by means of a
  • Electroencephalogram (EEG) is recorded, the electroencephalogram is recorded with at least two electrodes in the driver's head area, and the driver's state of wakefulness is inferred from the transition from beta to alpha waves.
  • the cardiac state is recorded as an indicator of the physiological state variables by means of an electrocardiogram (EKG) in order to record data about stress and / or cardiac arrhythmias and / or for the early detection of heart attack and / or stroke.
  • EKG electrocardiogram
  • the blood pressure is used as a parameter of the physiological state variables
  • Blood pressure measurement recorded in particular to detect blood pressure peaks in drivers with high blood pressure. Additionally or alternatively, the heartbeat or pulse rate and / or the heart rate or the heart movement of the driver is recorded.
  • the skin temperature is recorded as a parameter of the physiological state variables in order to maintain or increase the driver's well-being after comparison with stored values, in particular by influencing the ambient temperature.
  • the conductivity of the skin is recorded as a parameter of the physiological state variables
  • additional key parameters in driver monitoring are parameters such as the eyelid closure or the frequency with which the driver's eyelids are closed, and / or the grip force on the steering wheel with which the driver's hands do this Include steering wheel, and / or movements of the driver in the driver's seat, recorded, compared with stored comparison values and used in a relevant manner for determining the result.
  • the lane behavior of the motor vehicle and / or the change in the speed of the motor vehicle and / or other relevant parameters of the motor vehicle or its surroundings are recorded as additional key parameters in driver monitoring, and are stored with them Comparative values are compared and used in a relevant manner to determine the result.
  • a device which is advantageously suitable for carrying out the method according to the invention contains suitable sensors for recording the physiological data of the driver, a device for comparing recorded physiological data with corresponding physiological data stored in a memory and / or for direct evaluation of recorded physiological data, and one or more Devices for influencing the vehicle's own Devices to ensure a safe condition of the driver and / or motor vehicle.
  • ACC Adaptive Cruise Control
  • EAS Electronic Active Steering
  • other devices for influencing in-vehicle devices or systems can switch on the hazard warning lights, switch off the ignition and / or place a radio call to a rescue facility, preferably with location information.
  • Embodiment of the device according to the invention which impair the freedom of movement of the monitored driver in the driving position as little as possible or not at all and additionally those which are easy and safe to put on when getting in and are easy and safe to take off when getting out or those in which there is no active putting on or filing is required.
  • FIG. 1 schematically in a functional block containing
  • System represents the integration and the basic structure of the driver monitoring system according to the invention in the environment of a motor vehicle, and
  • Fig. 2 shows schematically an embodiment of a driver monitoring system. Description of the embodiments
  • Fig. 1 the integration and the basic structure of the driver monitoring system according to the invention is shown schematically in a system containing function blocks.
  • the driver is generally designated by 7 and driver assistance systems such as ACC and EAS are designated by 15.
  • ACC stands for Adaptive Cruise Control and, as an adaptive speed control, ensures that the speed is adapted to the traffic situation.
  • EAS stands for Electronics Avtive Steering and, as an electronically active control, ensures that the steering of the vehicle is influenced based on the respective situation.
  • the driver assistance systems denoted by 15 are not limited to the assistance systems mentioned and already known today, but also include those that will be used in the future to influence vehicles in general and motor vehicles in particular.
  • Driver status monitor 1, driver 7 and driver assistance systems 15 can be referred to as control instances, which have an influence and affect vehicle devices or systems of the vehicle. As the vehicle's own devices or systems
  • Motor 3, engine 9, brake 9 and steering 13 are shown as functional blocks as examples by way of example in FIG. 1. They act as actuators in the system. These actuators motor 3 via output 4, brake 9 via output 10 and steering 13 via output 14 influence the vehicle so that a safe
  • This functional state is represented by block 11.
  • the driver status monitor 1 essentially has three outputs 2, 5 and 6. Via the output 2 is immediately on the Actuators motor 3, brake 9 and steering 13 influenced and acted. The signals appearing on output 2 for directly influencing the three actuators motor 3, brake 9 and steering 13 act directly on them in the intended sense. Can via a second output 5 impact on the driver 7 are taken to stop it as by a warning signal or other 'influence on safe control of the vehicle. Via a third output 6, influence is exerted on the driver assistance systems 15, for example in order to influence and change the speed in the desired and necessary manner by means of ACC and / or by means of EAS.
  • the driver 7 as a further control entity can act via the output 8 on all three actuators motor 3, brake 9 and steering 13 in the well-known manner.
  • the driver assistance systems 15 act via the output 12 on the actuators motor 3, brake 9 and steering 13 in the manner required or desired by the respective situation.
  • This can be automatic in an adaptive manner adapted to the traffic situation, and this can be according to the specification of the driver status monitor 1 via output 6.
  • the vehicle can be braked :, steered to the edge of the road and the engine switched off. This will bring the vehicle into a safe state.
  • driver status monitor 1 namely driver status monitor 1
  • driver 7 namely driver assistance systems 15
  • driver status monitor 1 driver 7
  • driver assistance systems 15 can have different priorities or, if appropriate, also competing ones
  • the driver 7 can, if necessary retrieve the highest priority by pressing an appropriate button or reserve it.
  • FIG. 2 schematically shows an exemplary embodiment for the driver status monitor 1.
  • the driver designated by 7 in FIG. 1 has a head 24, a body 32 and two arms 25 and 26 as well as two legs, not designated in more detail.
  • There are a number of sensors 21, 22, 23 ,, 27, 28, 29, 30 and 31 are provided, which the driver 7 'different physiological and other data capture and the measured thereby respectively
  • a device 35 Feed data via correspondingly assigned lines or wirelessly to a device 35.
  • This device 35 evaluates the acquired physiological and other data.
  • the evaluation 'can take place directly on the basis of the recorded data.
  • the evaluation may also include the comparison .the 'acquired data with corresponding stored data.
  • data stored in the device 35 are fed from a memory 34 via a line 33.
  • the device 35 has the functional outputs already shown in FIG. 1, namely output 2 for directly influencing actuators 3, 9 and 13, output 5 for influencing driver 7 and output 6 for directly influencing driver assistance systems 15 and thus indirectly or indirect influence on the actuators mentioned.
  • the device can have a further essential output, namely output 36, via which of the
  • Device 35 measured and determined data about the state of the driver 7 is fed to a memory 37 and stored there.
  • driver monitoring are recognized as parameters for 'physiological state of the driver monitor 1 as a key parameter of the driver state variables.
  • EEG Brain waves recorded using an electroencephalogram
  • At least two electrodes are provided as sensors 21 and 22 in the area of the head 24 of the driver 7.
  • sensors 21 and 22 are provided as sensors 21 and 22 in the area of the head 24 of the driver 7.
  • 35 is the transition from beta to alpha waves to the
  • the heart state is recorded using an electrocardiogram, EKG.
  • sensor 31 is symbolically provided in FIG. 2. From the data supplied in this way, information and data about stress, cardiac arrhythmias as well as those for the early detection of a heart attack or a stroke are determined in the device 35.
  • Another parameter of the physiological state variables is the blood pressure, which takes place by means of blood pressure measurement via a corresponding sensor unit 27, which also detects the pulse. From this, in particular, essential data can be generated in the unit 35, which points to dangerous blood pressure peaks in drivers with high blood pressure
  • Heartbeat or heart rate can also be determined separately as a parameter.
  • a special sensor is not shown in FIG. 2 for this.
  • the heart movement can also be recorded as a parameter, for example by means of a radar sensor, which is also not shown.
  • suitable measures can then be taken to maintain a safe state of the driver and / or vehicle.
  • the skin temperature and / or the skin temperature is used as a parameter of the physiological state variables
  • 25 skin conductivity recorded For example, be influenced according to the detected skin temperature on the ambient temperature of the driver in order to maintain, maintain or increase his well-being in the vehicle. From the conductivity of the skin, 35 statements about anxiety and
  • the recorded physiological data are stored in a memory 37 and can be sent to the driver's treating doctor or generally given to a doctor. This can also be done via a radio device.
  • an optical sensor 23 such as a camera, which is aimed at the driver's face, the
  • Facial movements in particular the eyelid closing or • frequency with which the driver's eyelids are closed, are recognized as further additional key parameter when the driver monitoring and evaluated according to their relevance in the unit 35th
  • Another key parameter can be the grip force with which the driver grips the steering wheel with his hands. This is detected with a suitable sensor 28. The evaluation is carried out again in the unit 35. With a further sensor device 30, the "movements of the rider can be detected in the driver's seat unit are supplied to 35 and evaluated there in a relevant manner.
  • a direct evaluation and on the other hand a comparative evaluation, in which stored comparison values are used, can be carried out.
  • Determination of the result can be used in a relevant manner.
  • Suitable sensors 21, 22, 23, 27, 28, 29, 30 and 31, as shown in FIG. 2 are those which impair the freedom of movement of the monitored driver in the driving position as little as possible or not at all. In addition, if possible, it should be those that are easy and safe when boarding must be put on and can be put down easily and safely when getting out. Particularly suitable sensors can also be those in which no active application or removal is required.
  • the invention enables driver monitoring, which entails a significant increase in traffic safety, especially for older road users.
  • driver monitoring can advantageously be used together with telemonitoring of the treating doctor for convenient monitoring of the driver's state of health.
  • the respective state of the driver can be used as an input variable for suitable actuators for controlling the well-being of the driver.
  • the observation, measurement and characterization of the driver's status provided according to the invention serves as an input variable for the control of intelligent man-machine interfaces and for assistance systems with regard to driver safety, comfort and traffic safety in general.
  • the driver's condition and the possible deviation from an uncritical condition, in particular with regard to stress, fatigue and health, is determined by measuring the key physiological parameters and evaluating them. Results-oriented is on drivers and. Vehicle acted to keep both in the driver-vehicle system in a safe state or, if necessary, to put them in a safe state.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Traffic Control Systems (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

La présente invention concerne un procédé, et un dispositif destiné à le mettre en oeuvre, servant à caractériser l'état du conducteur (7) d'un véhicule automobile. Un dispositif de suivi d'état du conducteur (1) détermine des grandeurs d'état physiologique du conducteur. En fonction des résultats obtenus, une action s'effectue sur des unités de commande (3, 9, 13, 15) du véhicule ainsi que sur le conducteur, afin de permettre à des mesures appropriées d'être prises pour garantir le maintien d'un état de sécurité (11) du conducteur ou du véhicule. Comme grandeurs d'état physiologique sont déterminées, et éventuellement enregistrées, en particulier l'activité électrique du cerveau par l'intermédiaire d'un électroencéphalogramme, le fonctionnement cardiaque par l'intermédiaire d'un électrocardiogramme, la pression sanguine, la fréquence cardiaque ou le pouls, les mouvements cardiaques, la température cutanée et la conductivité de la peau. Comme autre paramètres clés peuvent être mesurés la fréquence des battements de paupière, la force de préhension exercée par le conducteur sur le voltant et ses mouvements sur le siège, lesdits paramètres étant évalués de manière pertinente, et ajoutés aux autres résultats afin de permettre à des mesures appropriées d'être prises pour agir sur le conducteur et sur le véhicule.
PCT/DE2002/000833 2001-05-30 2002-03-07 Procede et dispositif servant a caracteriser l'etat du conducteur d'un vehicule automobile WO2002096694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001126224 DE10126224A1 (de) 2001-05-30 2001-05-30 Verfahren und Vorrichtung zur Charakterisierung des Zustandes des Fahrers eines Kraftfahrzeuges
DE10126224.8 2001-05-30

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