WO2007118759A1 - Driver assistance system having a wireless communications link - Google Patents

Driver assistance system having a wireless communications link Download PDF

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Publication number
WO2007118759A1
WO2007118759A1 PCT/EP2007/052813 EP2007052813W WO2007118759A1 WO 2007118759 A1 WO2007118759 A1 WO 2007118759A1 EP 2007052813 W EP2007052813 W EP 2007052813W WO 2007118759 A1 WO2007118759 A1 WO 2007118759A1
Authority
WO
WIPO (PCT)
Prior art keywords
driver assistance
assistance system
evaluation unit
sensor
vehicle
Prior art date
Application number
PCT/EP2007/052813
Other languages
German (de)
French (fr)
Inventor
Manfred Hellmann
Juergen Boecker
Dieter Hoetzer
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 WO2007118759A1 publication Critical patent/WO2007118759A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/02—Active or adaptive cruise control system; Distance control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/30—Environment conditions or position therewithin
    • B60T2210/36—Global Positioning System [GPS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2554/00—Input parameters relating to objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/45—External transmission of data to or from the vehicle
    • B60W2556/50—External transmission of data to or from the vehicle for navigation systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/52—Determining velocity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9314—Parking operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9324—Alternative operation using ultrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9325—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles for inter-vehicle distance regulation, e.g. navigating in platoons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93276—Sensor installation details in the windshield area

Definitions

  • the invention relates to a driver assistance system for motor vehicles, with at least one sensor for detecting the traffic environment and an associated evaluation unit with a user interface.
  • Examples of known driver assistance systems are parking aids, which detect the closer traffic environment with the aid of ultrasonic sensors or video sensors and give the driver when parking an acoustic or visual feedback, and so-called ACC systems (Adaptive Cruise Control), based on radar sensors, Lidarsensoren or Video sensors monitor the front of the vehicle and in particular are able to measure the distance to a vehicle in front, so that then with the help of the evaluation an automatic distance control can be performed as a supplement to a known cruise control function.
  • ACC systems Adaptive Cruise Control
  • These known driver assistance systems are already installed by the vehicle manufacturer in the vehicle, and the individual system components are networked by cabling with each other and with other vehicle systems. Due to the individual adaptation to the respective vehicle type and due to the necessary extensive testing before the series launch such systems are relatively expensive, and a subsequent installation in a vehicle is not or at best possible with great difficulty.
  • the object of the invention is to provide a driver assistance system, which provides the driver with helpful information about the traffic environment, and let install easier in a vehicle.
  • the sensor data can thus be transmitted wirelessly to the evaluation unit, so that no expensive wiring within the vehicle.
  • wireless communication known communication systems such as Bluetooth, WLAN and the like can be used, as well as in mobile electronic devices such as mobile phones (smart phones), PIMs (Personal Information Manager), PDAs (Personal Digital Assistant), handhelds and the like in Use are.
  • mobile phones smart phones
  • PIMs Personal Information Manager
  • PDAs Personal Digital Assistant
  • the evaluation unit is one of the above-mentioned devices, which in any case have a user interface and only need to be extended to corresponding additional functions, which in many of these devices, for. B. in PDAs, can be done simply by the fact that an appropriate software is loaded into the device.
  • the device losbarbar install in a comfortably accessible position in the vehicle, for example, on the dashboard. The usually present in such devices display is then clearly visible to the driver while driving.
  • the sensor may be, for example, a radar sensor, as used in known ACC systems.
  • the sensor housing is modified so that it can be attached, for example by means of suction or by gluing at a suitable location on or in the vehicle, for example, on the inner surface of the windshield.
  • the necessary cabling is limited to a power supply cable, through which the sensor can be connected to the vehicle battery, for example, via an already present in the vehicle power connection, such as in the form of a cigarette lighter.
  • a distance warning function For example, a distance warning function.
  • the information provided by the sensor on distances to other road users can then be displayed on the display of the user interface as text, by symbols, pictograms or in the form of an image, such as in the form of a situation image from a bird's eye view.
  • a radar sensor can also be installed, for example, on the rear window of the vehicle, so that a monitoring of the vehicle's rear space, including the secondary lane and a large part of the blind spot is made possible to provide a lane change assistance function when overtaking on highways.
  • one or more sensors such as radar sensors, ultrasonic sensors, video sensors and the like can be mounted at appropriate locations on the outside of the vehicle, which can be realized in particular also the function of a parking aid.
  • the installation effort is then limited as a sufficiently stable attachment of the sensor and the laying of the power supply cable.
  • a navigation system is integrated into the evaluation unit or the device in which the evaluation unit is implemented, so that the GPS data supplied by the navigation system and the information derived from a digital road map are made viable for the assistance functions ,
  • the evaluation unit can also be integrated into such a device.
  • FIG. 1 shows a block diagram of a driver assistance system according to the invention.
  • Figure 2 is a schematic diagram illustrating the installation of
  • the driver assistance system shown as a block diagram in Figure 1 comprises a sensor 10, such as a radar sensor, and a portable device 12, which may be, for example, a smart phone, a PDA or the like, so a device that is about the size of a Cigarette box and can also be held comfortably in the hand.
  • the device 12 has a user interface 14, with a display 16, a keyboard 18 for inputting operating commands, and an acoustic interface 20 for the output of beeps and optionally also of spoken (synthetically generated) speech and optionally also for the input of spoken commands, which are decrypted by a built-in speech recognition system.
  • an evaluation unit 22 which serves to evaluate the data supplied by the sensor 10 and to the driver via the display 16 and / or the acoustic interface 20, is integrated into the device 12, either in the form of specialized hardware or preferably in the form of a software module Provide information about the traffic environment, such as the distance to a preceding vehicle. It is conceivable, for example, that the distance is displayed on the display 16 as a distance indication and / or illustrated.
  • the sensor 10 and the device 12 each have a communication interface 24, 26 for wireless communication. These may be, for example, Bluetooth interfaces.
  • a known GPS navigation system 28 is integrated, the data on the road course and the position of the own vehicle not only to the
  • the evaluation unit 22 can transmit. By periodically polling the vehicle position, the evaluation unit 22 is thus able to determine the absolute speed of the own vehicle, without requiring a wired connection to the speedometer of the vehicle. In this way, the evaluation unit 22 is able, for example, to output an acoustic warning signal if the measured distance to the vehicle in front falls below a speed-dependent safety distance.
  • the curvature of the currently traveled road section can be determined from the data provided by the navigation system 28 about the course of the lane, without having to be connected to a yaw rate sensor of the vehicle. If the roadway curvature is known, the evaluation device 22 can better match the vehicles located by the sensor 10 with the various lanes of the roadway.
  • the evaluation unit 20 communicates via the communication sections 26 with appropriately equipped electronic control systems for the engine and the brake system of the vehicle, so that not only one
  • FIG. 2 illustrates an example of how the driver assistance system described above can be installed in a vehicle.
  • the sensor 10 is housed in a mounting housing 30, which is attached for example by means of suction pins on the inner surface of the windshield 32 of the vehicle.
  • the sensor 10 is adjustable within the Einbaugehauses 30 so that it can be correctly aligned even in the amount of the road.
  • the power supply of the sensor 10 via the vehicle battery, by means of a cable 34 which is connected to a formed for example by a cigarette lighter power connector 36 of the vehicle.
  • the device 12 is releasably plugged into a console 38, which is mounted in a position easily accessible to the driver next to the steering wheel 40 on the instrument panel 42 of the vehicle. Also, the display 16 is thus clearly visible to the driver.

Abstract

Driver assistance system for motor vehicles, having at least one sensor (10) for detecting the surrounding traffic, and having an associated evaluation unit (22) with a user interface (14), characterized in that the sensor (10) and the evaluation unit (22) are connected to one another via wireless communications interfaces (24, 26).

Description

Beschreibungdescription
Titeltitle
Fahrerassistenzsystem mit drahtloser KommunikationsverbindungDriver assistance system with wireless communication connection
Stand der TechnikState of the art
Die Erfindung betrifft ein Fahrerassistenzsystem für Kraftfahrzeuge, mit mindestens einem Sensor zur Erfassung des Verkehrsumfelds und einer zugehörigen Auswerteeinheit mit einer Benutzerschnittstelle .The invention relates to a driver assistance system for motor vehicles, with at least one sensor for detecting the traffic environment and an associated evaluation unit with a user interface.
Beispiele für bekannte Fahrerassistenzsysteme sind Einparkhilfen, die das nähere Verkehrsumfeld mit Hilfe von Ultraschallsensoren oder Videosensoren erfassen und dem Fahrer beim Einparken eine akustische oder visuelle Ruckmeldung vermitteln, sowie sogenannte ACC-Systeme (Adaptive Cruise Control), die auf der Basis von Radarsensoren, Lidarsensoren oder Videosensoren das Vorfeld des Fahrzeugs überwachen und insbesondere in der Lage sind, den Abstand zu einem vorausfahrenden Fahrzeug zu messen, so daß dann mit Hilfe der Auswerteeinheit eine automatische Abstandsregelung als Ergänzung zu einer bekannten Tempomat-Funktion ausgeführt werden kann. Diese bekannten Fahrerassistenzsysteme werden bisher bereits vom Fahrzeughersteller in das Fahrzeug eingebaut, und die einzelnen Systemkomponenten sind durch Verkabelung miteinander sowie mit anderen Fahrzeugsystemen vernetzt. Aufgrund der individuellen Anpassung an den jeweiligen Fahrzeugtyp und aufgrund der notwendigen umfangreichen Erprobungen vor der Serieneinfuhrung sind solche Systems relativ kostspielig, und ein nachtraglicher Einbau in ein Fahrzeug ist bisher nicht oder allenfalls unter großen Schwierigkeiten möglich.Examples of known driver assistance systems are parking aids, which detect the closer traffic environment with the aid of ultrasonic sensors or video sensors and give the driver when parking an acoustic or visual feedback, and so-called ACC systems (Adaptive Cruise Control), based on radar sensors, Lidarsensoren or Video sensors monitor the front of the vehicle and in particular are able to measure the distance to a vehicle in front, so that then with the help of the evaluation an automatic distance control can be performed as a supplement to a known cruise control function. These known driver assistance systems are already installed by the vehicle manufacturer in the vehicle, and the individual system components are networked by cabling with each other and with other vehicle systems. Due to the individual adaptation to the respective vehicle type and due to the necessary extensive testing before the series launch such systems are relatively expensive, and a subsequent installation in a vehicle is not or at best possible with great difficulty.
Offenbarung der ErfindungDisclosure of the invention
Aufgabe der Erfindung ist es, ein Fahrerassistenzsystem zu schaffen, das dem Fahrer hilfreiche Informationen über das Verkehrsumfeld vermittelt, und sich einfacher in einem Fahrzeug installieren laßt.The object of the invention is to provide a driver assistance system, which provides the driver with helpful information about the traffic environment, and let install easier in a vehicle.
Diese Aufgabe wird erfindungsgemaß dadurch gelost, daß der Sensor und die Auswerteeinheit über drahtlose Kommuniktationsschnittstellen miteinander verbunden sind.This object is achieved according to the invention that the sensor and the evaluation are connected to each other via wireless communication interfaces.
Die Sensordaten können somit drahtlos an die Auswerteeinheit übermittelt werden, so daß eine aufwendige Verkabelung innerhalb des Fahrzeugs entfallt.The sensor data can thus be transmitted wirelessly to the evaluation unit, so that no expensive wiring within the vehicle.
Zahlreiche nutzliche Assistenzfunktionen wie beispielsweise eine Einparkhilfe, eine automatische Abstandswarnung und dergleichen lassen sich auf diese Weise auch als Nachrustsatz implementieren, der mit verhältnismäßig geringem Aufwand nachtraglich in ein bestehendes Fahrzeug eingebaut werden kann. Hierdurch wird für die einzelnen Systemkomponenten, insbesondere für die Sensoren, ein größerer Markt erschlossen, so daß aufgrund größerer Stuckzahlen eine rationellere Fertigung ermöglicht wird und somit Kostenersparnisse erzielt werden können .Numerous useful assistance functions such as a parking aid, an automatic distance warning and the like can be implemented in this way as Nachrustsatz that can be installed with relatively little effort nachtraglich in an existing vehicle. As a result, a larger market is developed for the individual system components, in particular for the sensors, so that due to larger numbers of pieces a more rational production is made possible and thus cost savings can be achieved.
Für die drahtlose Kommunikation können bekannte Kommunikationssysteme wie beispielsweise Bluetooth, WLAN und dergleichen eingesetzt werden, wie sie auch bei mobilen elektronischen Geraten wie Mobiltelefonen (Smart-Phones) , PIMs (Personal Information Manager), PDAs (Personal Digital Assistent), Handhelds und dergleichen in Gebrauch sind.For wireless communication known communication systems such as Bluetooth, WLAN and the like can be used, as well as in mobile electronic devices such as mobile phones (smart phones), PIMs (Personal Information Manager), PDAs (Personal Digital Assistant), handhelds and the like in Use are.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteranspruchen angegeben.Advantageous embodiments and further developments of the invention are specified in the dependent claims.
In einer besonders bevorzugten Ausfuhrungsform handelt es sich bei der Auswerteeinheit um eines der oben genannten Gerate, die ohnehin eine Benutzerschnittstelle aufweisen und lediglich um entsprechende Zusatzfunktionen erweitert zu werden brauchen, was bei vielen dieser Gerate, z. B. bei PDAs, einfach dadurch geschehen kann, daß eine entsprechende Software in das Gerat geladen wird. Für solche Gerate sind auch Konsolen verfugbar, die es gestatten, das Gerat losbar in einer bequem erreichbaren Position im Fahrzeug anzubringen, beispielsweise am Armaturenbrett. Das üblicherweise bei solchen Geraten vorhandene Display ist dann für den Fahrer auch wahrend der Fahrt gut sichtbar .In a particularly preferred embodiment, the evaluation unit is one of the above-mentioned devices, which in any case have a user interface and only need to be extended to corresponding additional functions, which in many of these devices, for. B. in PDAs, can be done simply by the fact that an appropriate software is loaded into the device. For such devices and consoles are available, which allow the device losbarbar install in a comfortably accessible position in the vehicle, for example, on the dashboard. The usually present in such devices display is then clearly visible to the driver while driving.
Bei dem Sensor kann es sich beispielsweise um einen Radarsensor handeln, wie er auch bei bekannten ACC-Systemen eingesetzt wird. Vorzugsweise ist dann das Sensorgehause so modifiziert, daß es sich beispielsweise mit Hilfe von Saugnapfen oder durch Klebung an geeigneter Stelle am oder im Fahrzeug anbringen laßt, beispielsweise an der Innenflache der Windschutzscheibe. Die notwendige Verkabelung beschrankt sich auf ein Stromversorgungskabel, durch das der Sensor mit der Fahrzeugbatterie verbunden werden kann, beispielsweise über einen ohnehin im Fahrzeug vorhandenen Stromanschluß, etwa in der Form eines Zigarettenanzunders .The sensor may be, for example, a radar sensor, as used in known ACC systems. Preferably, then the sensor housing is modified so that it can be attached, for example by means of suction or by gluing at a suitable location on or in the vehicle, for example, on the inner surface of the windshield. The necessary cabling is limited to a power supply cable, through which the sensor can be connected to the vehicle battery, for example, via an already present in the vehicle power connection, such as in the form of a cigarette lighter.
Mit Hilfe eines solchen Sensors laßt sich dann beispielsweise eine Abstandswarnfunktion realisieren. Die vom Sensor gelieferte Information über Abstande zu anderen Verkehrsteilnehmern laßt sich dann auf dem Display der Benutzerschnittstelle als Text, durch Symbole, Piktogramme oder auch in der Form eines Bildes darstellen, etwa in der Form eines Situationsbildes aus der Vogelperspektive .With the help of such a sensor can then be realized, for example, a distance warning function. The information provided by the sensor on distances to other road users can then be displayed on the display of the user interface as text, by symbols, pictograms or in the form of an image, such as in the form of a situation image from a bird's eye view.
Ebenso laßt sich ein Radarsensor beispielsweise auch an der Heckscheibe des Fahrzeugs installieren, so daß eine Überwachung des Ruckraums des Fahrzeugs, einschließlich der Nebenspur und eines großen Teils des toten Winkels ermöglicht wird, um etwa beim Überholen auf Autobahnen eine Spurwechselassistenzfunktion bereitzustellen .Likewise, a radar sensor can also be installed, for example, on the rear window of the vehicle, so that a monitoring of the vehicle's rear space, including the secondary lane and a large part of the blind spot is made possible to provide a lane change assistance function when overtaking on highways.
Wahlweise können ein oder mehrere Sensoren wie Radarsensoren, Ultraschallsensoren, Videosensoren und dergleichen an geeigneten Stellen außen am Fahrzeug angebracht werden, wodurch sich insbesondere auch die Funktion einer Einparkhilfe realisieren laßt. Der Installationsaufwand beschrankt sich dann als eine hinreichend stabile Befestigung des Sensors und das Verlegen des Stromversorgungskabels .Optionally, one or more sensors such as radar sensors, ultrasonic sensors, video sensors and the like can be mounted at appropriate locations on the outside of the vehicle, which can be realized in particular also the function of a parking aid. The installation effort is then limited as a sufficiently stable attachment of the sensor and the laying of the power supply cable.
Zur Steigerung der Aussagekraft der Sensordaten und zur Erweiterung des Funktionsumfangs der Assistenzfunktionen ist es vorteilhaft, wenn der Auswerteeinheit zusatzliche Daten wie Fahrzeuggeschwindigkeit, Gierrate und Kurvenradien zur Verfugung stehen. In einer besonders zweckmäßigen Ausfuhrungsform ist deshalb in die Auswerteeinheit bzw. das Gerat, in dem die Auswerteeinheit implementiert ist, auch ein Navigationssystem integriert, so daß die vom Navigationssystem gelieferten GPS- Daten sowie die aus einer digitalen Straßenkarte abgeleiteten Informationen für die Assistenzfunktionen vefugbar gemacht werden .It is to increase the informational value of the sensor data and to extend the functionality of the assistance functions advantageous if the evaluation unit additional data such as vehicle speed, yaw rate and curve radii are available. In a particularly expedient embodiment, therefore, a navigation system is integrated into the evaluation unit or the device in which the evaluation unit is implemented, so that the GPS data supplied by the navigation system and the information derived from a digital road map are made viable for the assistance functions ,
Im Handel sind bereits Navigationssysteme erhaltlich, die aus Nachrustsatz in ein Kraftfahrzeug eingebaut werden oder in ein nachtraglich einbaubares Autoradio integriert sind. Gemäß einer Ausfuhrungsform der Erfindung kann die Auswerteeinheit auch in ein solches Gerat integriert sein.Navigation systems are already commercially available, which are installed from Nachrustsatz in a motor vehicle or integrated into a nachtraglich installable car radio. According to one embodiment of the invention, the evaluation unit can also be integrated into such a device.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Ein Ausfuhrungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung naher erläutert .An embodiment of the invention is illustrated in the drawings and explained in more detail in the following description.
Es zeigen:Show it:
Figur 1 ein Blockdiagramm eines erfindungsgemaßen Fahrerassistenzsystems; undFIG. 1 shows a block diagram of a driver assistance system according to the invention; and
Figur 2 eine Prinzipskizze, die den Einbau desFigure 2 is a schematic diagram illustrating the installation of
Assistenzsystems in ein Kraftfahrzeug illustriert.Assistance system illustrated in a motor vehicle.
Ausfuhrungsform der Erfindung Das in Figur 1 als Blockdiagramm dargestellte Fahrerassistenzsystem umfaßt einen Sensor 10, beispielsweise einen Radarsensor, und ein tragbares Gerat 12, bei dem es sich beispielsweise um ein Smart-Phone, einen PDA oder dergleichen handeln kann, also ein Gerat, das etwa die Große einer Zigarettenschachtel hat und auch bequem in der Hand gehalten werden kann. Das Gerat 12 weist eine Benutzerschnittstelle 14 auf, mit einem Display 16, einer Tastatur 18 zur Eingabe von Bedienungsbefehlen, und einer akustischen Schnittstelle 20 zur Ausgabe von Signaltonen und gegebenenfalls auch von gesprochener (synthetisch erzeugter) Sprache und gegebenenfalls auch zur Eingabe von gesprochenen Befehlen, die von einem eingebauten Spracherkennungssystem entschlüsselt werden.Embodiment of the invention The driver assistance system shown as a block diagram in Figure 1 comprises a sensor 10, such as a radar sensor, and a portable device 12, which may be, for example, a smart phone, a PDA or the like, so a device that is about the size of a Cigarette box and can also be held comfortably in the hand. The device 12 has a user interface 14, with a display 16, a keyboard 18 for inputting operating commands, and an acoustic interface 20 for the output of beeps and optionally also of spoken (synthetically generated) speech and optionally also for the input of spoken commands, which are decrypted by a built-in speech recognition system.
Außerdem ist in das Gerat 12 entweder in der Form einer spezialisierten Hardware oder vorzugsweise in der Form eines Softwaremoduls eine Auswerteeinheit 22 integriert, die dazu dient, die vom Sensor 10 gelieferten Daten auszuwerten und dem Fahrer über das Display 16 und/oder die akustische Schnittstelle 20 Informationen über das Verkehrsumfeld zur Verfugung zu stellen, beispielsweise den Abstand zu einem vorausfahrenden Fahrzeug. Denkbar ist etwa, daß der Abstand auf dem Display 16 als Entfernungsangabe angezeigt und/oder bildlich dargestellt wird.In addition, an evaluation unit 22, which serves to evaluate the data supplied by the sensor 10 and to the driver via the display 16 and / or the acoustic interface 20, is integrated into the device 12, either in the form of specialized hardware or preferably in the form of a software module Provide information about the traffic environment, such as the distance to a preceding vehicle. It is conceivable, for example, that the distance is displayed on the display 16 as a distance indication and / or illustrated.
Für die Übermittlung der Sensorsdaten an die Auswerteeinheit 22 sowie gegebenenfalls für die Übermittlung von Befehlen von der Auswerteeinheit an den Sensor weisen der Sensor 10 und das Gerat 12 jeweils eine Kommunikationsschnittstelle 24, 26 für drahtlose Kommunikation auf. Dabei kann es sich beispielsweise um Bluetooth-Schnittstellen handeln . In das Gerat 12 ist außerdem ein bekanntes GPS-Navigationssystem 28 integriert, das Daten über den Fahrbahnverlauf und über die Position des eigenen Fahrzeugs nicht nur an dieFor the transmission of the sensor data to the evaluation unit 22 and optionally for the transmission of commands from the evaluation unit to the sensor, the sensor 10 and the device 12 each have a communication interface 24, 26 for wireless communication. These may be, for example, Bluetooth interfaces. In the device 12 also a known GPS navigation system 28 is integrated, the data on the road course and the position of the own vehicle not only to the
Benutzerschnittstelle 14 sondern auch an die Auswerteeinheit 22 übermitteln kann. Durch periodische Abfrage der Fahrzeugposition ist somit die Auswerteeinheit 22 in der Lage, die Absolutgeschwindigkeit des eigenen Fahrzeugs zu ermitteln, ohne daß eine verdrahtete Verbindung mit dem Geschwindigkeitsmesser des Fahrzeugs erforderlich ist. Auf diese Weise ist die Auswerteeinheit 22 beispielsweise in der Lage, ein akustisches Warnsignal auszugeben, wenn der gemessene Abstand zum vorausfahrenden Fahrzeug einen geschwindigkeitsabhangigen Sicherheitsabstand unterschreitet .User interface 14 but also to the evaluation unit 22 can transmit. By periodically polling the vehicle position, the evaluation unit 22 is thus able to determine the absolute speed of the own vehicle, without requiring a wired connection to the speedometer of the vehicle. In this way, the evaluation unit 22 is able, for example, to output an acoustic warning signal if the measured distance to the vehicle in front falls below a speed-dependent safety distance.
Ebenso laßt sich aus den vom Navigationssystem 28 bereitgestellten Daten über den Fahrbahnverlauf zumindest nahrungsweise die Krümmung des derzeit befahrenen Fahrbahnabschnitts bestimmen, ohne daß ein Anschluß zu einem Gierratensensor des Fahrzeugs bestehen muß. Wenn die Fahrbahnkrummung bekannt ist, kann die Auswerteeinrichtung 22 die vom Sensor 10 georteten Fahrzeuge besser den verschiedenen Fahrspuren der Fahrbahn zuordnen.Likewise, at least approximately, the curvature of the currently traveled road section can be determined from the data provided by the navigation system 28 about the course of the lane, without having to be connected to a yaw rate sensor of the vehicle. If the roadway curvature is known, the evaluation device 22 can better match the vehicles located by the sensor 10 with the various lanes of the roadway.
Im Prinzip ist es auch denkbar, daß die Auswerteeinheit 20 über die Kommunikationsschnitte 26 mit entsprechend ausgerüsteten elektronischen Steuersystemen für den Motor und das Bremssystem des Fahrzeugs kommuniziert, so daß nicht nur eineIn principle, it is also conceivable that the evaluation unit 20 communicates via the communication sections 26 with appropriately equipped electronic control systems for the engine and the brake system of the vehicle, so that not only one
Abstandswarnung, sondern auch eine automatische Abstandsregelung ermöglicht wird.Distance warning, but also an automatic distance control is possible.
Figur 2 illustriert ein Beispiel, wie das oben beschriebene Fahrerassistenzsystem in einem Fahrzeug eingebaut werden kann. Der Sensor 10 ist in einem Einbaugehause 30 untergebracht, das beispielsweise mittels Saugnapfen an der Innenflache der Windschutzscheibe 32 des Fahrzeugs befestigt ist. Der Sensor 10 ist dabei innerhalb des Einbaugehauses 30 justierbar, so daß er auch in der Hohe korrekt auf die Fahrbahn ausgerichtet werden kann. Die Spannungsversorgung des Senors 10 erfolgt über die Fahrzeugbatterie, mit Hilfe eines Kabels 34, das an einen beispielsweise durch einen Zigarettenanzunder gebildeten Stromanschluß 36 des Fahrzeugs angeschlossen ist.FIG. 2 illustrates an example of how the driver assistance system described above can be installed in a vehicle. The sensor 10 is housed in a mounting housing 30, which is attached for example by means of suction pins on the inner surface of the windshield 32 of the vehicle. The sensor 10 is adjustable within the Einbaugehauses 30 so that it can be correctly aligned even in the amount of the road. The power supply of the sensor 10 via the vehicle battery, by means of a cable 34 which is connected to a formed for example by a cigarette lighter power connector 36 of the vehicle.
Das Gerat 12 ist losbar in eine Konsole 38 eingesteckt, die in einer für den Fahrer bequem erreichbaren Position neben dem Lenkrad 40 am Armaturenbrett 42 des Fahrzeugs befestigt ist. Auch das Display 16 ist somit für den Fahrer gut sichtbar. The device 12 is releasably plugged into a console 38, which is mounted in a position easily accessible to the driver next to the steering wheel 40 on the instrument panel 42 of the vehicle. Also, the display 16 is thus clearly visible to the driver.

Claims

Ansprüche claims
1. Fahrerassistenzsystem für Kraftfahrzeuge, mit mindestens einem Sensor (10) zur Erfassung des Verkehrsumfelds und einer zugehörigen Auswerteeinheit (22) mit einer Benutzerschnittstelle (14), dadurch gekennzeichnet, daß der Sensor (10) und die Auswerteeinheit (22) über drahtlose Kommunikationsschnittstellen (24, 26) miteinander verbunden sind.1. Driver assistance system for motor vehicles, having at least one sensor (10) for detecting the traffic environment and an associated evaluation unit (22) with a user interface (14), characterized in that the sensor (10) and the evaluation unit (22) via wireless communication interfaces ( 24, 26) are interconnected.
2. Fahrerassistenzsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Auswerteeinheit (22) und die Benutzerschnittstelle (14) in ein tragbares Gerat (12) integriert sind.2. Driver assistance system according to claim 1, characterized in that the evaluation unit (22) and the user interface (14) in a portable device (12) are integrated.
3. Fahrerassistenzsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Sensor (10) und die Auswerteeinheit (12) als Nachrustsatz für den nachtraglichen Einbau in ein Kraftfahrzeug ausgebildet sind.3. Driver assistance system according to claim 1 or 2, characterized in that the sensor (10) and the evaluation unit (12) are designed as Nachrustsatz for the subsequent installation in a motor vehicle.
4. Fahrerassistenzsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Kommunikationsschnittstellen (24, 26) Bluetooth- Schnittstellen sind. 4. Driver assistance system according to one of the preceding claims, characterized in that the communication interfaces (24, 26) are Bluetooth interfaces.
5. Fahrerassistenzsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Sensor (10) ein Abstandssensor zur Messung des Abstands zu Objekten im Vorfeld und/oder Ruckraum des Fahrzeugs ist, und daß in der Auswerteeinheit (22) eine Abstandswarnfunktion implementiert ist.5. Driver assistance system according to one of the preceding claims, characterized in that the sensor (10) is a distance sensor for measuring the distance to objects in the apron and / or jerk space of the vehicle, and in that the evaluation unit (22) is implemented a distance warning function.
6. Fahrerassistenzsystem nach Anspruch 5, dadurch gekennzeichnet, daß die Auswerteeinheit (22) dazu ausgebildet ist, über ein Display (16) der Benutzerschnittstelle (14) eine Abstandsanzeige zu veranlassen .6. driver assistance system according to claim 5, characterized in that the evaluation unit (22) is adapted to cause a display (16) of the user interface (14) a distance display.
7. Fahrerassistenzsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Auswerteeinheit7. Driver assistance system according to one of the preceding claims, characterized in that the evaluation unit
(22) mit einem Navigationssystem (28) kombiniert ist, das Navigationsdaten für die Auswerteeinheit (22) bereitstellt .(22) is combined with a navigation system (28), which provides navigation data for the evaluation unit (22).
8. Fahrerassistenzsystem nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß der Sensor (10) für die Montage an einer Windschutzscheibe (32), Heckscheibe oder Seitenscheide des Fahrzeugs ausgebildet ist.8. Driver assistance system according to one of claims 5 to 7, characterized in that the sensor (10) for mounting on a windshield (32), rear window or side scabbard of the vehicle is formed.
9. Fahrerassistenzsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Sensor (10) zur Stromversorgung ein Kabel (34) aufweist, das für den Anschluß an einen im Fahrzeuginnenraum angeordneten, auch für andere Stromverbraucher zur Verfugung stehenden Stromanschluß (36) des Fahrzeugs ausgebildet ist. 9. Driver assistance system according to one of the preceding claims, characterized in that the sensor (10) for power supply has a cable (34) arranged for connection to a vehicle interior, also for other power consumers available to power connection (36) of the vehicle is trained.
10. Fahrerassistenzsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß in der Auswerteeinheit (22) eine Emparkhilfefunktion implementiert ist. 10. Driver assistance system according to one of the preceding claims, characterized in that in the evaluation unit (22) an Emparkhilfefunktion is implemented.
PCT/EP2007/052813 2006-04-12 2007-03-23 Driver assistance system having a wireless communications link WO2007118759A1 (en)

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