WO2007073829A1 - Device for switching off 24 ghz short-range sensors of a motor vehicle by means of gps in geographically critical areas (radioastronomical facilities) - Google Patents

Device for switching off 24 ghz short-range sensors of a motor vehicle by means of gps in geographically critical areas (radioastronomical facilities) Download PDF

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Publication number
WO2007073829A1
WO2007073829A1 PCT/EP2006/011616 EP2006011616W WO2007073829A1 WO 2007073829 A1 WO2007073829 A1 WO 2007073829A1 EP 2006011616 W EP2006011616 W EP 2006011616W WO 2007073829 A1 WO2007073829 A1 WO 2007073829A1
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WO
WIPO (PCT)
Prior art keywords
control unit
distance
motor vehicle
operating mode
deactivation
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PCT/EP2006/011616
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German (de)
French (fr)
Inventor
Christoph Urbanczik
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Bayerische Motoren Werke Aktiengesellschaft
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Publication of WO2007073829A1 publication Critical patent/WO2007073829A1/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
    • 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
    • G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0235—Avoidance by time multiplex
    • 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
    • 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
    • G01S2013/9321—Velocity regulation, e.g. cruise control
    • 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
    • G01S2013/93274—Sensor installation details on the side of the vehicles

Definitions

  • the invention relates to a device for detecting objects in the vicinity of a motor vehicle according to the preamble of patent claim 1.
  • Such a device is known, for example, in connection with distance-related driving speed control systems, parking aids or lane change assistants.
  • distance-related cruise control systems which are also known by the term "ACC Stop &Go”
  • the proximity sensors are used for distance control for the vehicle speed range between 0 and about 30 km / h
  • These short range sensors are, in particular, broadband radar sensors operating at a frequency of These are currently permitted without restriction, however, there is a European law which requires that such sensors must be deactivated in the vicinity of radio astronomical installations as of July 1, 2007.
  • This "proximity” is for example fixed, but ever defined by station different radius around these radio astronomical stations (radius up to 35km), which was set by the operators of such stations themselves and here as an example of one below considered deactivation area.
  • the detection of such a situation or such a deactivation area via GPS data which are provided by a built-in anyway in the vehicle navigation system with GPS sensor or by a possibly also installed for other vehicle systems GPS sensor.
  • the invention is based on the following findings:
  • the proximity sensors are used in various driver assistance systems, which is why a suitable shutdown behavior must be found for each system.
  • the complete functionality should not be deactivated to prevent unexpected driving conditions for the driver, especially if this can lead to safety-critical driving conditions.
  • a vehicle 1 with a GPS sensor 2 and short-range sensors 3 is shown.
  • the sensors 2 and 3 are connected to a control unit 4, which is assigned to a driver assistance system such as in particular a distance-related cruise control system (ACC Stop & Go).
  • the vehicle 1 approaches on its route a radio astronomical system 5.
  • a deactivation area 6 defined in the form of a safety radius r.
  • This deactivation area 6 and optionally further deactivation areas are stored in the control unit 4 in the form of GPS data that can be detected via the GPS sensor 2.
  • a security area 7 z. B. in the form of a radial extension x of the radius r and stored. If the control unit 4 detects the proximity to a radio astronomical system 5 or to a deactivation area 6, it is possible to react in various ways:
  • the control unit 4 only reacts when the deactivation range 6, which is legally prescribed, for example, is undercut (dark gray area).
  • the proximity sensors 3 must be deactivated directly and automatically. As a result, the system (after visual, audible, or haptic driver information) can change to a restricted mode of operation.
  • Possible limited operating modes would be: a) deactivation of the entire functionality of the system b) deactivation of that part of the functionality which uses the data of the short-range sensors 3, but maintenance of a reduced system functionality without use of the short-range sensors 3:
  • the ACC Stop & Go function (distance control up to 0 km / h), which uses the data of the short-range sensors 3, are deactivated within the radius r, but a conventional ACC function (distance control only up to a speed of typically about 30 km / h), which does not require the data of the short-range sensors 3 to be maintained.
  • Another possibility of a limited operating mode would be a pure cruise control (braking or non-braking cruise control) without any distance control.
  • the shutdown of the proximity sensors 3 must be done automatically, the change to another operating mode as a consequence of the shutdown of the proximity sensors can be done either automatically or manually (driver-operated).
  • the manual change may be such that the driver only has to acknowledge an operating mode change suggested by the system or change to another operating mode after a previous system shutdown. If the proximity sensors 3 are deactivated, the driver can be warned acoustically, visually or haptically of the absence of functionality or of the possible automatic transition to the restricted operating mode and, if necessary, be notified of the possibility for the manually selectable operating mode.
  • a particularly advantageous embodiment is that the actual deactivation area 6 is extended by a spatial extent x (light gray security area 7). If the vehicle 1 now enters this safety area 7, the driver is automatically prepared for the upcoming restricted operating mode in the deactivation area 6, in which initially the proximity sensors 3 can continue to be used, but the driver is aware of the imminent omission of the current control function, which is still based on the data of the short-range sensors 3, is pointed out. This hint may be optical, acoustic or haptic in nature.
  • the system functionality itself can be designed (also limited) to warn the driver or to ask for takeover. Safety-related active control functions, such as an active braking intervention, are maintained in order to prevent automatic acceleration in preparation for the restricted operating mode. If the vehicle 1 now enters the final deactivation area 6 (dark gray), these preparatory functions are also deactivated accordingly and the system changes (automatically or manually by driver actuation) into a fallback level described under variant 1).
  • the system In the case of an ACC Stop & Go system, the system is not completely deactivated in the light gray security area 7 (legal extension plus x), but the control unit 4 continues to cause a possibly necessary delay (brake-only mode in preparation for a further restricted operating mode).
  • the distance control using the proximity sensors 3 In safety area 7, the distance control using the proximity sensors 3 is possibly maintained until standstill.
  • the driver is requested to take over by avoiding automatic acceleration and preferably by means of a visual, acoustic or haptic warning. The driver is advised that due to the proximity to a radio astronomical system 5, the vehicle 1 will soon no longer be brought to a standstill under the control of a fully activated ACC Stop & Go system.
  • the system changes by means of the Control unit 4 (automatically or manually by driver control) in a restricted operating mode, eg in the form of a mere distance-related cruise control or in the form of a distance-related cruise control that is active only from a certain speed threshold (about 30 km / h), not on the data of the proximity sensors 3 is based.
  • a restricted operating mode eg in the form of a mere distance-related cruise control or in the form of a distance-related cruise control that is active only from a certain speed threshold (about 30 km / h), not on the data of the proximity sensors 3 is based.
  • a third area 8 may optionally be defined (white) which is, for example, radially larger by z meters than the actual deactivation area 6, where z is greater than x is. Only when the vehicle 1 is outside this third area 8 when leaving the deactivation area 6 does the control unit 4 cause the local area sensors to be switched back on again, as a result of which the system is again fully available.
  • the control unit 4 preferably causes an optical, acoustic or haptic warning and provides the restricted operating mode. If the driver tries to switch on the deactivated system in the security area 7, the same reaction as in the actual deactivation area 6 can take place. Alternatively, the system may behave as if the driver had driven into safety area 7 while the system was activated; i.e. warn visually, acoustically or haptically and / or prepare for the restricted operating mode.

Abstract

The invention relates to a device for detecting objects in the vicinity of a motor vehicle. Said device comprises a GPS sensor, short-range sensors mounted on the motor vehicle and a control device emitting measurement signals obtained via the short-range sensors and detecting reflection of the measurement signals. The invention is characterized in that the control device is supplied by the GPS sensor with information on the actual global position of the motor vehicle. Global position ranges are stored in the control device in the form of deactivation ranges in which the measurement signals are not emitted.

Description

VORRICHTUNG ZUR ABSCHALTUNG VON 24 GHZ NAHBEREICHSSENSOREN EINES KRAFTFAHRZEUGS MITTELS GPS IN GΞOGRAFISCH KRITISCHEN GEBIETEN (RADIOASTRONOMISCHE ANLAGEN) APPARATUS FOR SWITCHING OFF 24 GHZ SENSORS OF A MOTOR VEHICLE BY GPS IN GΞOGRAPHIC CRITICAL AREAS (RADIOASTRONOMIC EQUIPMENT)
Die Erfindung bezieht sich auf eine Vorrichtung zur Erfassung von Objekten im Nahbereich eines Kraftfahrzeugs nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for detecting objects in the vicinity of a motor vehicle according to the preamble of patent claim 1.
Eine derartige Vorrichtung ist beispielsweise in Verbindung mit abstandsbezogenen Fahrgeschwindigkeitsregelsystemen, Einparkhilfen oder Spurwechselassistenten bekannt. Beispielsweise bei abstandsbezogenen Fahrgeschwindigkeitsregelsystemen, die auch unter dem Begriff „ACC Stop & Go" bekannt sind, werden die Nahbereichssensoren zur Abstandregelung für den Fahrgeschwindigkeitsbereich zwischen 0 und etwa 30 km/h verwendet. Diese Nahbereichssensoren sind insbesondere breitbandig arbeitende Radarsensoren, welche mit einer Frequenz von 24 GHz arbeiten. Diese sind momentan ohne Einschränkung zulässig. Es existiert allerdings ein europäisches Gesetz, welches vorschreibt, dass derartige Sensoren ab 01.07.2007 in der Nähe von radioastronomischen Anlagen deaktiviert werden müssen. Diese „Nähe" ist beispielsweise durch einen festen, aber je nach Station unterschiedlichen Radius um diese radioastronomischen Stationen definiert (Radius bis zu 35km), der von den Betreibern solcher Stationen selber festgelegt wurde und hier als ein Beispiel für einen im folgenden betrachteten Deaktivierungsbereich genannt wird. Die Erkennung einer solchen Situation bzw. eines solchen Deaktivierungsbereichs erfolgt über GPS-Daten, welche von einem im Fahrzeug ohnehin verbauten Navigationssystem mit GPS-Sensor oder von einem gegebenenfalls auch für andere Fahrzeugsysteme verbauten GPS-Sensor, zur Verfügung gestellt werden.Such a device is known, for example, in connection with distance-related driving speed control systems, parking aids or lane change assistants. For example, in the case of distance-related cruise control systems, which are also known by the term "ACC Stop &Go", the proximity sensors are used for distance control for the vehicle speed range between 0 and about 30 km / h These short range sensors are, in particular, broadband radar sensors operating at a frequency of These are currently permitted without restriction, however, there is a European law which requires that such sensors must be deactivated in the vicinity of radio astronomical installations as of July 1, 2007. This "proximity" is for example fixed, but ever defined by station different radius around these radio astronomical stations (radius up to 35km), which was set by the operators of such stations themselves and here as an example of one below considered deactivation area. The detection of such a situation or such a deactivation area via GPS data, which are provided by a built-in anyway in the vehicle navigation system with GPS sensor or by a possibly also installed for other vehicle systems GPS sensor.
Es ist Aufgabe der Erfindung, die Vorrichtung eingangs genannter Art hinsichtlich eines sicheren Abschaltvorgehens weiterzubilden.It is an object of the invention to develop the device of the type mentioned in terms of a safe shutdown procedure.
Diese Aufgabe wird erfindungsgemäß durch den Gegenstand des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind die Gegenstände der abhängigen Patentansprüche.This object is achieved by the subject of claim 1. Advantageous developments are the subject matters of the dependent claims.
Der Erfindung liegen folgende Erkenntnisse zugrunde:The invention is based on the following findings:
Die Nahbereichssensoren werden in verschiedenen Fahrerassistenzsystemen verwendet, weshalb für jedes System ein geeignetes Abschaltverhalten gefunden werden muss. Je nachdem, welches System diese Sensoren nutzt, sollte wenn möglich nicht die komplette Funktionalität deaktiviert werden, um für den Fahrer unerwartete Fahrzustände zu verhindern, insbesondere wenn es dadurch zu sicherheitskritischen Fahrzuständen kommen kann. So sollte beispielsweise ein ACC System, das sich im Rahmen einer aktiven Abstandsregelung gerade in einer starken Verzögerung auf ein Zielfahrzeug (=Objekt) befindet, in einem solchen Fall nicht die Bremse lösen und somit ungebremst auf das Zielfahrzeug zurollen. Wenn möglich sollte also nicht das gesamte System deaktiviert werden, sondern nur die Teile, die aus funktionalen Gründen zwingend auf die Daten der Nahbereichssensoren angewiesen sind. An Hand der Zeichnung werden Ausführungsbeispiele der Erfindung näher erläutert. In der Zeichnung ist ein Fahrzeug 1 mit einem GPS-Sensor 2 und Nahbereichssensoren 3 dargestellt. Die Sensoren 2 und 3 sind mit einem Steuergerät 4 verbunden, das einem Fahrerassistenzsystem wie insbesondere einem abstandbezogenen Fahrgeschwindigkeitsregelsystem (ACC Stop&Go) zugeordnet ist. Das Fahrzeug 1 nähere sich auf seiner Fahrroute einer radioastronomischen Anlage 5. Um die radioastronomische Anlage 5 sei ein Deaktivierungsbereich 6 in Form eines Sicherheitsradius r definiert. Dieser Deaktivierungsbereich 6 und gegebenenfalls weitere Deaktivierungsbereiche sind in Form von GPS-Daten, die über den GPS- Sensor 2 detektierbar sind, im Steuergerät 4 abgespeichert. Weiterhin kann ein Sicherheitsbereich 7 z. B. in Form einer radialen Erweiterung x des Radius r definiert und abgespeichert sein. Wenn das Steuergerät 4 die Nähe zu einer radioastronomischen Anlage 5 bzw. zu einem Deaktivierungsbereich 6 detektiert, kann auf verschiedene Arten reagiert werden:The proximity sensors are used in various driver assistance systems, which is why a suitable shutdown behavior must be found for each system. Depending on which system uses these sensors, if possible, the complete functionality should not be deactivated to prevent unexpected driving conditions for the driver, especially if this can lead to safety-critical driving conditions. For example, an ACC system that is in the context of an active distance control just in a strong delay to a target vehicle (= object), in such a case should not release the brake and thus roll unrestrained to the target vehicle. If possible, therefore, not the entire system should be deactivated, but only the parts that are necessarily dependent on the data of the short-range sensors for functional reasons. With reference to the drawing embodiments of the invention will be explained in more detail. In the drawing, a vehicle 1 with a GPS sensor 2 and short-range sensors 3 is shown. The sensors 2 and 3 are connected to a control unit 4, which is assigned to a driver assistance system such as in particular a distance-related cruise control system (ACC Stop & Go). The vehicle 1 approaches on its route a radio astronomical system 5. To the radio astronomical system 5 is a deactivation area 6 defined in the form of a safety radius r. This deactivation area 6 and optionally further deactivation areas are stored in the control unit 4 in the form of GPS data that can be detected via the GPS sensor 2. Furthermore, a security area 7 z. B. in the form of a radial extension x of the radius r and stored. If the control unit 4 detects the proximity to a radio astronomical system 5 or to a deactivation area 6, it is possible to react in various ways:
Variante 1 ):Version 1 ):
Das Steuergerät 4 reagiert erst, wenn wirklich der - beispielsweise gesetzlich vorgeschriebene - Deaktivierungsbereich 6 unterschritten wird (dunkelgrauer Bereich). Dabei müssen die Nahbereichssensoren 3 direkt und automatisch deaktiviert werden. Als Folge dessen kann das System (nach einer optischen, akustischen oder haptischen Fahrerinformation) in einen eingeschränkten Betriebsmodus wechseln.The control unit 4 only reacts when the deactivation range 6, which is legally prescribed, for example, is undercut (dark gray area). The proximity sensors 3 must be deactivated directly and automatically. As a result, the system (after visual, audible, or haptic driver information) can change to a restricted mode of operation.
Mögliche eingeschränkte Betriebsmodi wären: a) Deaktivierung der gesamten Funktionalität des Systems b) Deaktivierung desjenigen Teils der Funktionalität, welches die Daten der Nahbereichssensoren 3 nutzt, aber Aufrechterhaltung einer reduzierten Systemfunktionalität ohne Verwendung der Nahbereichssensoren 3:Possible limited operating modes would be: a) deactivation of the entire functionality of the system b) deactivation of that part of the functionality which uses the data of the short-range sensors 3, but maintenance of a reduced system functionality without use of the short-range sensors 3:
- Beispielhaft kann die ACC Stop&Go Funktion (Abstandsregelung bis 0 km/h), die die Daten der Nahbereichssensoren 3 nutzt, innerhalb des Radius r deaktiviert werden, jedoch eine herkömmliche ACC-Funktion (Abstandsregelung nur bis zu einer Geschwindigkeit von typischerweise ca. 30km/h), die die Daten der Nahbereichssensoren 3 nicht benötigt, aufrechterhalten werden.- By way of example, the ACC Stop & Go function (distance control up to 0 km / h), which uses the data of the short-range sensors 3, are deactivated within the radius r, but a conventional ACC function (distance control only up to a speed of typically about 30 km / h), which does not require the data of the short-range sensors 3 to be maintained.
- Eine weitere Möglichkeit eines eingeschränkten Betriebsmodus wäre eine reine Geschwindigkeitsregelung (bremsender oder nicht-bremsender Tempomat) ohne jegliche Abstandsregelung.- Another possibility of a limited operating mode would be a pure cruise control (braking or non-braking cruise control) without any distance control.
Die Abschaltung der Nahbereichssensoren 3 muss automatisch geschehen, der Wechsel in einen anderen Betriebsmodus als Konsequenz aus der Abschaltung der Nahbereichssensoren kann jedoch entweder automatisch oder manuell (fahrerbetätigt) geschehen. Der manuelle Wechsel kann derart gestaltet sein, dass der Fahrer einen vom System vorgeschlagenen Betriebsmoduswechsel nur quittieren muss oder er nach einer vorherigen System-Abschaltung in einen anderen Betriebsmodus wechseln muss. Wenn die Nahbereichsensoren 3 deaktiviert werden, kann der Fahrer akustisch, visuell oder haptisch vor dem Wegfall der Funktionalität bzw. vor dem eventuell automatischen Übergang in den eingeschränkten Betriebsmodus gewarnt und gegebenenfalls auf die Möglichkeit für den manuell wählbaren Betriebsmodus hingewiesen werden.The shutdown of the proximity sensors 3 must be done automatically, the change to another operating mode as a consequence of the shutdown of the proximity sensors can be done either automatically or manually (driver-operated). The manual change may be such that the driver only has to acknowledge an operating mode change suggested by the system or change to another operating mode after a previous system shutdown. If the proximity sensors 3 are deactivated, the driver can be warned acoustically, visually or haptically of the absence of functionality or of the possible automatic transition to the restricted operating mode and, if necessary, be notified of the possibility for the manually selectable operating mode.
Variante 2):Variant 2):
Ein besonders vorteilhaftes Ausführungsbeispiel besteht darin, dass der eigentliche Deaktivierungsbereich 6 um eine räumliche Ausdehnung x erweitert wird (hellgrauer Sicherheitsbereich 7). Kommt das Fahrzeug 1 nun in diesen Sicherheitsbereich 7, wird der Fahrer automatisch auf den bevorstehenden eingeschränkten Betriebsmodus im Deaktivierungsbereich 6 vorbereitet, in dem zunächst weiterhin die Nahbereichsensoren 3 genutzt werden können, der Fahrer jedoch auf den bevorstehenden Wegfall der aktuellen Regelfunktion, der noch auf den Daten der Nahbereichssensoren 3 beruht, hingewiesen wird. Dieser Hinweis kann wiederum optischer, akustischer oder haptischer Natur sein. Zusätzlich kann in diesem Sicherheitsbereich 7 die System-Funktionalität selbst derart gestaltet (auch eingeschränkt) werden, um den Fahrer vorbereitend zu warnen oder zur Übernahme aufzufordern. Sicherheitsrelevante aktive Regelfunktionen, wie z.B. ein aktiver Bremseingriff, werden aufrechterhalten, um eine automatische Beschleunigung schon als Vorbereitung auf den eingeschränkten Betriebsmodus zu verhindern. Kommt das Fahrzeug 1 nun in den endgültigen Deaktivierungsbereich 6 (dunkelgrau), werden auch diese vorbereitenden Funktionen entsprechend deaktiviert und das System wechselt (automatisch oder manuell durch Fahrerbetätigung) in eine unter Variante 1 ) beschriebene Rückfallebene.A particularly advantageous embodiment is that the actual deactivation area 6 is extended by a spatial extent x (light gray security area 7). If the vehicle 1 now enters this safety area 7, the driver is automatically prepared for the upcoming restricted operating mode in the deactivation area 6, in which initially the proximity sensors 3 can continue to be used, but the driver is aware of the imminent omission of the current control function, which is still based on the data of the short-range sensors 3, is pointed out. This hint may be optical, acoustic or haptic in nature. In addition, in this security area 7, the system functionality itself can be designed (also limited) to warn the driver or to ask for takeover. Safety-related active control functions, such as an active braking intervention, are maintained in order to prevent automatic acceleration in preparation for the restricted operating mode. If the vehicle 1 now enters the final deactivation area 6 (dark gray), these preparatory functions are also deactivated accordingly and the system changes (automatically or manually by driver actuation) into a fallback level described under variant 1).
Konkretes besonders vorteilhaftes Beispiel im Falle eines ACC Stop&Go Fahrerassistenzsystems:A particularly advantageous example in the case of an ACC Stop & Go driver assistance system:
Im Falle eines ACC Stop&Go- Systems wird das System im hellgrauen Sicherheitsbereich 7 (gesetzliche Ausdehnung plus x) nicht komplett deaktiviert, sondern das Steuergerät 4 veranlasst eine eventuell nötige Verzögerung weiterhin (Brake-Only-Modus als Vorbereitung auf einen weiter eingeschränkten Betriebsmodus). In Sicherheitsbereich 7 wird die Abstandsregelung unter Nutzung der Nahbereichsensoren 3 gegebenenfalls noch bis zum Stillstand aufrechterhalten. Jedoch wird der Fahrer durch Vermeidung einer automatischen Beschleunigung und vorzugsweise durch eine optische, akustische oder haptische Warnung zur Übernahme aufgefordert. Der Fahrer wird darauf hingewiesen, dass das Fahrzeug 1 aufgrund der räumlichen Nähe zu einer radioastronomischen Anlage 5 in Kürze nicht mehr durch ein vollständig aktiviertes ACC Stop&Go-System geregelt in den Stillstand bremsen wird. Kommt das Fahrzeug 1 in den Deaktivierungsbereich 6 (dunkelgrau) wechselt das System mittels des Steuergeräts 4 (automatisch oder manuell durch Fahrerbetätigung) in einen eingeschränkten Betriebsmodus, z.B. in Form einer bloßen nicht abstandbezogenen Fahrgeschwindigkeitsregelung oder in Form einer erst ab einer bestimmten Geschwindigkeitsschwelle (ca. 30 km/h) aktiven abstandsbezogenen Fahrgeschwindigkeitsregelung, die nicht auf den Daten der Nahbereichsensoren 3 beruht.In the case of an ACC Stop & Go system, the system is not completely deactivated in the light gray security area 7 (legal extension plus x), but the control unit 4 continues to cause a possibly necessary delay (brake-only mode in preparation for a further restricted operating mode). In safety area 7, the distance control using the proximity sensors 3 is possibly maintained until standstill. However, the driver is requested to take over by avoiding automatic acceleration and preferably by means of a visual, acoustic or haptic warning. The driver is advised that due to the proximity to a radio astronomical system 5, the vehicle 1 will soon no longer be brought to a standstill under the control of a fully activated ACC Stop & Go system. If the vehicle 1 enters the deactivation area 6 (dark gray), the system changes by means of the Control unit 4 (automatically or manually by driver control) in a restricted operating mode, eg in the form of a mere distance-related cruise control or in the form of a distance-related cruise control that is active only from a certain speed threshold (about 30 km / h), not on the data of the proximity sensors 3 is based.
Wenn das Fahrzeug 1 den Deaktivierungsbereich 6 wieder verlässt, soll die vollständige Funktionalität des ACC Stop&Go-Systems wieder zur Verfügung gestellt werden. Um an der direkten Grenze des Deaktivierungsbereiches 6 ein häufiges Wechseln zwischen den Betriebsmodi zu vermeiden, kann gegebenenfalls noch ein dritter Bereich 8 definiert werden (weiß), der beispielsweise radial um z Meter größer ist, als der eigentliche Deaktivierungsbereich 6, wobei z größer als x ist. Erst wenn sich das Fahrzeug 1 beim Verlassen des Deaktivierungsbereiches 6 außerhalb dieses dritten Bereiches 8 befindet, veranlasst das Steuergerät 4 ein Wiedereinschalten der Nahbereichssensoren, wodurch das System wieder in vollem Umfang zur Verfügung steht.When the vehicle 1 leaves the deactivation area 6 again, the complete functionality of the ACC Stop & Go system is to be made available again. In order to avoid frequent switching between the operating modes at the direct limit of the deactivation area 6, a third area 8 may optionally be defined (white) which is, for example, radially larger by z meters than the actual deactivation area 6, where z is greater than x is. Only when the vehicle 1 is outside this third area 8 when leaving the deactivation area 6 does the control unit 4 cause the local area sensors to be switched back on again, as a result of which the system is again fully available.
Versucht der Fahrer im deaktivierten Zustand des Systems und der Nahbereichssensoren 3 innerhalb des Deaktivierungsbereiches 6 das System zu aktivieren, veranlasst das Steuergerät 4 vorzugsweise eine optische, akustische oder haptische Warnung und stellt den eingeschränkten Betriebsmodus zur Verfügung. Versucht der Fahrer das ausgeschaltete System im Sicherheitsbereich 7 einzuschalten, kann dieselbe Reaktion wie im eigentlichen Deaktivierungsbereich 6 erfolgen. Alternativ dazu kann sich das System so verhalten, als ob der Fahrer im aktivierten Zustand des Systems in den Sicherheitsbereich 7 gefahren wäre; d.h. optisch, akustisch oder haptisch warnen und/oder auf den eingeschränkten Betriebsmodus vorbereiten. If the driver tries to activate the system when the system and the proximity sensors 3 are deactivated within the deactivation area 6, the control unit 4 preferably causes an optical, acoustic or haptic warning and provides the restricted operating mode. If the driver tries to switch on the deactivated system in the security area 7, the same reaction as in the actual deactivation area 6 can take place. Alternatively, the system may behave as if the driver had driven into safety area 7 while the system was activated; i.e. warn visually, acoustically or haptically and / or prepare for the restricted operating mode.

Claims

Patentansprüche claims
1. Vorrichtung zur Erfassung von Objekten im Nahbereich eines Kraftfahrzeugs (1 ) mit einem GPS-Sensor (2), mit an dem Kraftfahrzeug (1 ) angebrachten Nahbereichssensoren (3) und mit einem Steuergerät (4), das über die Nahbereichssensoren (3) bestimmte Messsignale aussendet und die Reflexion der Messsignale erfasst, dadurch gekennzeichnet, dass das Steuergerät (4) mittels des GPS-Sensors (2) Informationen über die aktuelle globale Position des Kraftfahrzeugs (1 ) erhält und dass im Steuergerät (4) globale Positionsbereiche als Deaktivierungsbereiche (6) abgespeichert sind, in denen die Messsignale nicht ausgesendet werden.1. A device for detecting objects in the vicinity of a motor vehicle (1) with a GPS sensor (2), with the motor vehicle (1) attached close range sensors (3) and with a control unit (4) via the proximity sensors (3) sends out certain measurement signals and detects the reflection of the measurement signals, characterized in that the control unit (4) receives information about the current global position of the motor vehicle (1) by means of the GPS sensor (2) and that in the control unit (4) global position areas as deactivation areas (6) are stored in which the measuring signals are not sent.
2. Vorrichtung nach Patentanspruch 1 , dadurch gekennzeichnet, dass das Steuergerät (4) im Deaktivierungsbereich (6) die Nahbereichssensoren (3) ausschaltet und eine von den Nahbereichssensoren (3) abhängige Regelfunktion in einen entsprechend eingeschränkten Betriebsmodus überführt.2. Device according to claim 1, characterized in that the control unit (4) in the deactivation area (6) switches off the proximity sensors (3) and converts one of the proximity sensors (3) dependent control function in a correspondingly limited operating mode.
3. Vorrichtung nach einem der vorangegangenen Patentansprüchen, dadurch gekennzeichnet, dass im Steuergerät (4) um den Deaktivierungsbereich (6) im Sinne einer Ausdehnung (x) des Deaktivierungsbereichs ein Sicherheitsbereich (7) definiert wird, in dem die Nahbereichssensoren (3) noch nicht ausgeschaltet werden, der Fahrer jedoch auf den eingeschränkten Betriebsmodus vorbereitet wird. 3. Device according to one of the preceding claims, characterized in that in the control unit (4) to the deactivation area (6) in the sense of expansion (x) of the deactivation area a security area (7) is defined, in which the Nahbereichssensoren (3) not yet but the driver is prepared for the restricted operating mode.
4. Vorrichtung nach dem vorangegangenen Patentanspruch, dadurch gekennzeichnet, dass der Fahrer bei noch aktivierter Regelfunktion (z. B. Abstandsregelung mit einem abstandsbezogenen Fahrgeschwindigkeitsregelsystem) zumindest dadurch auf den eingeschränkten Betriebsmodus vorbereitet wird, dass die Regelfunktion keine automatische Beschleunigung mehr zulässt.4. Device according to the preceding claim, characterized in that the driver is still prepared with control function (eg distance control with a distance-related driving speed control system) at least by the limited operating mode that the control function no longer allows automatic acceleration.
5. Vorrichtung nach einem der vorangegangenen Patentansprüchen, dadurch gekennzeichnet, dass das Steuergerät (4) einem abstandsbezogenen Fahrgeschwindigkeitsregelsystem zugeordnet ist und dass der eingeschränkte Betriebsmodus im Deaktivierungsbereich (6) eine mit den noch eingeschalteten Fernbereichssensoren durchführbare, auf einen vorgegebenen Fahrgeschwindigkeitsbereich eingeschränkte abstandsbezogene Fahrgeschwindigkeitsregelung ist.5. Device according to one of the preceding claims, characterized in that the control unit (4) is associated with a distance-related cruise control system and that the restricted operating mode in the deactivation area (6) is a feasible with the remote range sensors still enabled, limited to a predetermined vehicle speed range distance-related cruise control.
6. Vorrichtung nach einem der vorangegangenen Patentansprüchen, dadurch gekennzeichnet, dass das Steuergerät (4) einem abstandsbezogenen Fahrgeschwindigkeitsregelsystem zugeordnet ist und dass der eingeschränkte Betriebsmodus im Deaktivierungsbereich (6) eine nicht abstandsbezogene Fahrgeschwindigkeitsregelung ist. 6. Device according to one of the preceding claims, characterized in that the control unit (4) is associated with a distance-related cruise control system and that the restricted operating mode in the deactivation area (6) is not a distance-related cruise control.
PCT/EP2006/011616 2005-12-16 2006-12-04 Device for switching off 24 ghz short-range sensors of a motor vehicle by means of gps in geographically critical areas (radioastronomical facilities) WO2007073829A1 (en)

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