WO2014191165A1 - Object alert vehicle device and method - Google Patents

Object alert vehicle device and method Download PDF

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Publication number
WO2014191165A1
WO2014191165A1 PCT/EP2014/059155 EP2014059155W WO2014191165A1 WO 2014191165 A1 WO2014191165 A1 WO 2014191165A1 EP 2014059155 W EP2014059155 W EP 2014059155W WO 2014191165 A1 WO2014191165 A1 WO 2014191165A1
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WO
WIPO (PCT)
Prior art keywords
sound source
vehicle
sound
vehicle device
motor vehicle
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Application number
PCT/EP2014/059155
Other languages
German (de)
French (fr)
Inventor
Sebastian van Staa
Patrick KOEGEL
Original Assignee
Robert Bosch Gmbh
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Publication date
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Publication of WO2014191165A1 publication Critical patent/WO2014191165A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/006—Arrangement or adaptation of acoustic signal devices automatically actuated indicating risk of collision between vehicles or with pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/002—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle
    • B60Q9/004—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors

Definitions

  • the present invention relates to a vehicle device for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle, wherein the position and speed of an object relative to the own vehicle is determined by means of an object detection system and a method for warning at least one object in one Environment of a motor vehicle.
  • a system for warning at least one person in an environment of a motor vehicle which has a generator for generating an audio signal. Furthermore, a device for on and Turning off the generator and / or provided for controlling the volume of the audio signal, which turn on the generator in response to a person recognition system and the volume of the audio signal is controllable.
  • the invention is therefore based on the object, compared to the prior art improved vehicle with a device for warning at least one object in an environment of a motor vehicle form such that they are reliably heard by acutely vulnerable road users.
  • a vehicle device for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle, has at least one sound source for generating a sound signal and an object detection system arranged on the motor vehicle for detecting at least one object, wherein the
  • Sound source comprises at least one speaker, by means of which the sound signal can be directed to the detected object in the environment.
  • the vehicle From the directional warning according to the invention of at least one object in the surroundings of a motor vehicle, it thus follows in a particularly advantageous manner that a perception of the vehicle is ensured by other road users, in particular by pedestrians, even in the case of low external noise, and thus a traffic safety of the road users and passengers. the vehicle is elevated. Due to the directional sound, it is possible to suitably only sound the objects that are located in a danger zone generated by the vehicle. Thus, an acoustic annoyance of non-vulnerable objects in the vehicle environment is greatly reduced, so that the advantage of the low noise of electrically powered vehicles is maintained.
  • the audio signal is emitted as air vibration directly via individual speakers or a loudspeaker array in a wide range.
  • at least one sound source emits ultrasound, so that loudspeakers according to the invention operate with bundled ultrasound waves and generate audible tones only in a narrow cone region. This means that the generated sound signals are audible only at a specific point. In this way, it is possible that short concise signals and / or messages can be delivered directed, without disturbing uninvolved persons in the wider area.
  • the sound source in the form of a parametric loudspeaker.
  • parametric sound generation in contrast to conventional principles, no direct exciting vibrating surface is used for sound generation, but the amplitude is modulated as a parameter of a carrier signal.
  • the sound field of the so-called parametric loudspeaker thus initially consists only of the inaudible ultrasonic signal that is modulated with the audio signal.
  • the high sound pressure of the inaudible ultrasound changes the medium air and becomes non-linear. This nonlinearity leads to the demodulation of the audio signal, so that in the direction of propagation of the ultrasound the audio sound produced adds up in the correct phase and the actual audible sound signal is produced.
  • At least one sound source is formed from an ultrasonic sensor of a parking assistance device. From the simultaneous use of ultrasonic sensors of the parking assist device for detecting a distance to objects in the vehicle environment and as sound sources for generating directed sound results in a particularly advantageous manner, a reduction of material costs and a reduction in weight. Also, the external appearance of the motor vehicle is not adversely affected and eliminate disadvantageous and expensive arrangements for the integration of the sound sources in the motor vehicle.
  • a plurality of loudspeakers form the sound source.
  • the speakers are arranged to a common field and at an angle to each other inclined so that their common radiation is focused.
  • the sound source is connected to the vehicle and so tiltable and / or pivotally mounted and mechanically or electrically aligned. In this way, a pivoting of the sound source, and thus a tracking of the vulnerable object, possible if its position changes relative to the motor vehicle.
  • the object detection system is connected to the sound source via a controller, so that the settings of the sound source can be controlled as a function of the object detection via the controller.
  • the volume of the sound signal in dependence on the position of the object can be controlled. It proves to be advantageous if the object detection system is a video system and / or an infrared camera and / or radar.
  • the method according to the invention for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle comprises the steps of detecting an object, determining a danger area for the detected object and generating a sound signal by the sound source as a function of the determined danger area, wherein the sound source comprises at least one loudspeaker by means of which the sound signal can be aligned with the detected object in the environment.
  • the sound source comprises at least one loudspeaker by means of which the sound signal can be aligned with the detected object in the environment.
  • an ultrasound is emitted by the sound source, so that an acoustic annoyance of non-vulnerable objects in the vehicle environment can not only be reduced, but completely avoided.
  • the object can be detected by means of an object detection system which is connected to the sound source via a controller.
  • the settings of the sound source can be controlled by the controller as a function of the object detection system, so that the sound source can be aligned with the determined danger zone of the detected object.
  • the sound source is movably mounted on the vehicle such that the orientation of the sound source to the position of the detected object via the control is fluently adaptable.
  • FIG. 1 describes all features described or illustrated, alone or in any combination, as the subject matter of the invention, regardless of their summary in the patent claims or their dependency, and independently of their formulation or representation in the description or description. in the
  • FIG. 1 shows schematically a motor vehicle with a vehicle device according to the invention and several objects located in the vehicle environment.
  • FIG. 1 schematically shows a traffic situation with a motor vehicle 10 and a vehicle device according to the invention and a first object 30 and a second object 32.
  • the motor vehicle 10 is an electrically powered motor vehicle 10, for example with a hybrid drive this is characterized during the electric drive by a low noise level. From this, however, the danger situation may arise that the motor vehicle 10 is perceived by other road users, such as the objects 30, 32 until very late or not at all.
  • the motor vehicle 10 has a plurality of sound sources 41, 42, 43, 44, 45, 46 arranged in a cladding element 40, with which a directed sound signal 60 can be generated.
  • the sound sources 41, 42, 43, 44, 45, 46 thus have the particular advantage that the sound signal 60 can be emitted bundled in such a way that it can only be heard in a small area, so that the objects 30, 32 in the surroundings of the motor vehicle 10 can be targeted sonicated.
  • the sound signal 60 is only directed to located in the vicinity of the motor vehicle 10 objects 30, 32, when a dangerous situation is detected.
  • the vehicle 10 comprises an object detection device 50, by means of which the respective position of the objects 30, 32 shown in the surroundings of the motor vehicle 10 can be determined.
  • the object detection system 50 preferably has one or more cameras (not shown) and / or infrared cameras and / or radar sensors for this purpose, these being coupled to a control (also not shown).
  • a control also not shown
  • the sound sources 41, 42, 43, 44, 45, 46 are dependent on the determined danger area on the endangered object 30 aligned and a sound signal 60 is to a possible To avoid collision, specifically delivered to the object 30, wherein the sound signal 60 is formed in particular as a warning signal.
  • the sound source 45 is used for this purpose. It is also conceivable that the sound sources 41, 42, 43, 44, 45, 46 emit an ultrasound, which is audible only by the object 30, which is a pedestrian.
  • the second object 32 which is located in the vicinity of the motor vehicle 10 but not in the immediate danger zone, can not perceive the sound signal 60 directed to the object 30, depending on the embodiment, or only greatly diminished, and is thus neither distracted nor disturbed by noise harassed.
  • At least one of the illustrated sound sources 41, 42, 43, 44, 45, 46 may also be formed as an ultrasonic sensor Einparkassistenzvorraum, in the present embodiment, six sound sources 41, 42, 43, 44, 45, 46 in a cladding element 40 of a front, not integrated bumper are integrated.
  • Other sound sources are not shown in the embodiment, but may be integrated anywhere on and / or in the motor vehicle 10. From the simultaneous use of ultrasonic sensors of the parking assistance device for detecting a distance, for example to the objects 30, 32 in the environment of the motor vehicle 10 and as a sound source for generating a directed sound signal 60 results in a particularly advantageous manner, a reduction of material costs and a reduction in weight. Also, the external appearance of the motor vehicle 10 is not adversely affected and disadvantageous, complex arrangements for the integration of the sound sources 41, 42, 43, 44, 45, 46 omitted in the motor vehicle 10.
  • the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may be arranged inclined to one another at a common field and at an angle relative to one another such that their joint emission can be focused.
  • the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may be arranged inclined to one another at a common field and at an angle relative to one another such that their joint emission can be focused.
  • the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may be arranged inclined to one another at a common field and at an angle relative to one another such that their joint emission can be focused.
  • the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may be arranged inclined to one another at a common field and at an angle relative to one another such that their joint emission can be focused.
  • the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may
  • the speakers can be designed as ultrasonic speakers. It is also conceivable to use the directivity by a so-called phase array of individually modulated sound sources 41, 42, 43, 44, 45, 46, so that the directional sound signal 60 itself can be generated pivotable.
  • the object detection system 50 is connected to the sound sources 41, 42, 43, 44, 45, 46 via a control, not shown, so that the settings of the sound sources 41, 42, 43, 44, 45, 46 in FIG Depending on the object detection system 50 can be controlled via the controller.
  • the actuation of the sound sources 41, 42, 43, 44, 45, 46 can also take place electrically. In this way it is possible that, for example, the volume and / or the nature of the sound signal 60 in dependence on the position of the objects 30, 32 is adjustable. If the endangered object 30 leaves the danger zone, for example, the control switches off the sound signal 60.
  • a video system and / or an infrared camera and / or radar proves to be particularly advantageous as an object detection system 50.
  • the object detection system 50 or a plurality of object detection systems 50 are respectively integrated into the sound sources 41, 42, 43, 44, 45, 46 or directly adjacent to them arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Transportation (AREA)
  • Human Computer Interaction (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention relates to a vehicle device for an alert of at least one object (30, 32) in the surroundings of a motor vehicle (10), in particular an electric vehicle or a hybrid vehicle, comprising at least one sound source (41, 42, 43, 44, 45, 46) for generating a sound signal (60) and an object detection system (50) arranged on the motor vehicle (60) for detecting at least one object (30, 32). The sound source (41, 42, 43, 44, 45, 46) comprises at least one speaker, by means of which the sound signal (60) can be directed at the detected object (30, 32) in the surroundings.

Description

Beschreibung  description
Fahrzeugvorrichtung und Verfahren zur Warnung eines Objektes Vehicle device and method for warning an object
Die vorliegende Erfindung betrifft eine Fahrzeugvorrichtung zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges, insbesondere eines Elektrofahrzeuges oder eines Hybridfahrzeuges, wobei mittels einer Objekterfassungssystem die Position und Geschwindigkeit eines Objekts bezüglich des eigenen Fahrzeugs ermittelt wird und ein Verfahren zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges. The present invention relates to a vehicle device for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle, wherein the position and speed of an object relative to the own vehicle is determined by means of an object detection system and a method for warning at least one object in one Environment of a motor vehicle.
Stand der Technik State of the art
Es ist bekannt, dass sowohl Elektrofahrzeuge als auch Hybridfahrzeuge, wenn sie mittels eines Elektromotors angetrieben werden, den Vorteil haben, dass sie sehr geräuscharm fahren. Gerade im Stadtverkehr werden Hybridfahrzeuge meist mit einen Elektroantrieb betrieben, wobei der klassische Verbrennungsmotor mit einem höheren Geräuschpegel meist erst bei höherem Tempo oder starker Beschleunigung aktiviert wird. Allerdings hat die Geräuscharmut den Nachteil, dass diese Fahrzeuge von anderen Verkehrsteilnehmern, insbesondere von Fußgängern, Radfahrern oder dergleichen, sehr schlecht oder gar nicht wahrgenommen werden. Für diese Verkehrsteilnehmer besteht daher eine erhöhte Un- fallgefahr. It is known that both electric vehicles and hybrid vehicles, when driven by an electric motor, have the advantage of driving very quietly. Especially in city traffic hybrid vehicles are usually operated with an electric drive, the classic internal combustion engine with a higher noise level is usually activated only at higher speeds or high acceleration. However, the low noise has the disadvantage that these vehicles from other road users, especially pedestrians, cyclists or the like, are very bad or not perceived. For these road users there is therefore an increased risk of accidents.
Aus der DE 10200902791 1 ist ein System zur Warnung wenigstens einer Person in einer Umgebung eines Kraftfahrzeuges bekannt, welches einen Generator zur Erzeugung eines Audiosignales aufweist. Ferner ist eine Einrichtung zum Ein und Ausschalten des Generators und/oder zur Steuerung der Lautstärke des Audiosignales vorgesehen, welche in Abhängigkeit von einem Personenerkennungssystem den Generator ein oder ausschalten und die Lautstärke des Audiosignales steuerbar ist. From DE 10200902791 1 a system for warning at least one person in an environment of a motor vehicle is known, which has a generator for generating an audio signal. Furthermore, a device for on and Turning off the generator and / or provided for controlling the volume of the audio signal, which turn on the generator in response to a person recognition system and the volume of the audio signal is controllable.
Der Erfindung liegt somit die Aufgabe zugrunde, ein gegenüber dem Stand der Technik verbessertes Fahrzeug mit einer Vorrichtung zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges derart auszubilden, dass sie von akut gefährdeten Verkehrsteilnehmern zuverlässig gehört werden. The invention is therefore based on the object, compared to the prior art improved vehicle with a device for warning at least one object in an environment of a motor vehicle form such that they are reliably heard by acutely vulnerable road users.
Diese Aufgabe wird erfindungsgemäß durch eine Fahrzeugvorrichtung mit den Merkmalen des unabhängigen Anspruchs 1 und ein Verfahren mit den Merkmalen des unabhängigen Anspruchs 1 1 gelöst. Vorteilhafte Ausgestaltungen, Varianten und Weiterbildungen der Erfindung sind den Unteransprüche zu entneh- men. This object is achieved by a vehicle device having the features of the independent claim 1 and a method having the features of the independent claim 1 1. Advantageous embodiments, variants and further developments of the invention are to be taken from the subclaims.
Offenbarung der Erfindung Disclosure of the invention
Eine erfindungsgemäße Fahrzeugvorrichtung zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges, insbesondere eines Elektro- fahrzeuges oder eines Hybridfahrzeuges, weist zumindest eine Schallquelle zur Erzeugung eines Schallsignals und ein an dem Kraftfahrzeug angeordnetes Ob- jekterfassungssystem zur Erfassung von wenigstens einem Objekt auf, wobei dieA vehicle device according to the invention for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle, has at least one sound source for generating a sound signal and an object detection system arranged on the motor vehicle for detecting at least one object, wherein the
Schallquelle wenigstens einen Lautsprecher umfasst, mittels welchem das Schallsignal auf das erfasste Objekt in der Umgebung richtbar ist. Sound source comprises at least one speaker, by means of which the sound signal can be directed to the detected object in the environment.
Aus der erfindungsgemäßen gerichteten Warnung wenigstens eines Objektes in der Umgebung eines Kraftfahrzeuges folgt somit in besonders vorteilhafter Weise, dass eine Wahrnehmung des Fahrzeugs von anderen Verkehrsteilnehmern, insbesondere von Fußgängern auch bei geringen Außengeräuschen sichergestellt ist und somit eine Verkehrssicherheit der Verkehrsteilnehmer und von In- sassen des Fahrzeugs erhöht ist. Aufgrund der gerichteten Beschallung ist es möglich, in zweckmäßiger Weise nur die Objekte zu beschallen, welche sich in einem durch das Fahrzeug erzeugten Gefahrenbereich befinden. Somit wird auch eine akustische Belästigung von nicht gefährdeten Objekten in der Fahrzeugumgebung stark reduziert, so dass der Vorteil der Geräuscharmut von elektrisch betriebenen Fahrzeugen erhalten bleibt. From the directional warning according to the invention of at least one object in the surroundings of a motor vehicle, it thus follows in a particularly advantageous manner that a perception of the vehicle is ensured by other road users, in particular by pedestrians, even in the case of low external noise, and thus a traffic safety of the road users and passengers. the vehicle is elevated. Due to the directional sound, it is possible to suitably only sound the objects that are located in a danger zone generated by the vehicle. Thus, an acoustic annoyance of non-vulnerable objects in the vehicle environment is greatly reduced, so that the advantage of the low noise of electrically powered vehicles is maintained.
Bei konventionellen Lautsprechern wird das Audiosignal als Luftschwingung direkt über Einzellautsprecher oder auch einem Lautsprecherarray in einem weiten Bereich abgestrahlt. Auf diese Weise wird nur eine relativ begrenzte Bündelung der Schallabstrahlung erreicht. Bevorzugterweise emittiert zumindest eine Schallquelle Ultraschall, so dass erfindungsgemäße Lautsprecher mit gebündelten Ultraschallwellen arbeiten und nur in einem schmalen Kegelbereich hörbare Töne erzeugen. Das bedeutet, dass die erzeugten Schallsignale nur an einem ganz bestimmten Punkt hörbar sind. Auf diese Weise ist es möglich, dass kurze prägnante Signale und/ oder Meldungen gerichtet abgegeben werden können, ohne dabei unbeteiligte Personen im weiteren Umkreis zu stören. In conventional speakers, the audio signal is emitted as air vibration directly via individual speakers or a loudspeaker array in a wide range. In this way, only a relatively limited bundling of the sound radiation is achieved. Preferably, at least one sound source emits ultrasound, so that loudspeakers according to the invention operate with bundled ultrasound waves and generate audible tones only in a narrow cone region. This means that the generated sound signals are audible only at a specific point. In this way, it is possible that short concise signals and / or messages can be delivered directed, without disturbing uninvolved persons in the wider area.
Von besonderer Bedeutung ist dabei die Realisierung der Schallquelle in der Form eines parametrischen Lautsprechers. Bei der parametrischen Schallerzeugung wird im Gegensatz zu herkömmlichen Prinzipien keine direkt anregende schwingende Fläche zur Schallerzeugung genutzt, sondern es wird die Amplitude als ein Parameter eines Trägersignals moduliert. Das Schallfeld der sogenannten parametrischen Lautsprecher besteht somit zunächst nur aus dem nicht hörbaren Ultraschallsignal das mit dem Audiosignal, moduliert ist. Der hohe Schalldruck des nicht hörbaren Ultraschalls verändert das Medium Luft und wird dabei nichtlinear. Diese Nichtlinearität führt zur Demodulation des Audiosignals, so dass sich in Ausbreitungsrichtung des Ultraschalls der erzeugte Audioschall phasenrichtig aufaddiert und das eigentliche hörbare Schallsignal entsteht. Somit wird auch eine akustische Belästigung von nicht gefährdeten Objekten in der Fahrzeugumgebung vermieden. Erfindungsgemäß wird zumindest eine Schallquelle aus einem Ultraschallsensor einer Einparkassistenzvorrichtung gebildet. Aus der gleichzeitigen Verwendung von Ultraschallsensoren der Einparkassistenzvorrichtung zur Erfassung eines Abstands zu Objekten in der Fahrzeugumgebung und als Schallquellen zur Erzeugung von gerichtetem Schall resultiert in besonders vorteilhafter Weise eine Verringerung von Materialkosten und eine Gewichtsverringerung. Auch wird das äußere Erscheinungsbild des Kraftfahrzeugs nicht negativ beeinträchtigt und nachteilige und aufwändige Anordnungen zur Integration der Schallquellen in das Kraftfahrzeug entfallen. Of particular importance is the realization of the sound source in the form of a parametric loudspeaker. In parametric sound generation, in contrast to conventional principles, no direct exciting vibrating surface is used for sound generation, but the amplitude is modulated as a parameter of a carrier signal. The sound field of the so-called parametric loudspeaker thus initially consists only of the inaudible ultrasonic signal that is modulated with the audio signal. The high sound pressure of the inaudible ultrasound changes the medium air and becomes non-linear. This nonlinearity leads to the demodulation of the audio signal, so that in the direction of propagation of the ultrasound the audio sound produced adds up in the correct phase and the actual audible sound signal is produced. Thus, an acoustic annoyance of non-vulnerable objects in the vehicle environment is avoided. According to the invention, at least one sound source is formed from an ultrasonic sensor of a parking assistance device. From the simultaneous use of ultrasonic sensors of the parking assist device for detecting a distance to objects in the vehicle environment and as sound sources for generating directed sound results in a particularly advantageous manner, a reduction of material costs and a reduction in weight. Also, the external appearance of the motor vehicle is not adversely affected and eliminate disadvantageous and expensive arrangements for the integration of the sound sources in the motor vehicle.
Bevorzugterweise bilden eine Mehrzahl von Lautsprechern die Schallquelle aus. Hierzu sind die Lautsprecher zu einem gemeinsamen Feld und unter einem Winkel so gegeneinander geneigt angeordnet, dass deren gemeinsame Abstrahlung fokussierbar ist. Vorteilhaft ist die Schallquelle mit dem Fahrzeug verbunden und derart kippbar und/oder schwenkbar gelagert und mechanisch oder elektrisch ausrichtbar. Auf diese Weise ist ein Mitschwenken der Schallquelle, und damit ein Nachverfolgen des gefährdeten Objektes, möglich, falls sich dessen Position gegenüber dem Kraftfahrzeug ändert. Desweiteren ist es besonders vorteilhaft, wenn das Objekterfassungssystem über eine Steuerung mit der Schallquelle in Verbindung steht, so dass die Einstellungen der Schallquelle in Abhängigkeit der Objekterfassung über die Steuerung regelbar sind. So kann in einer bevorzugten Ausführungsform auch die Lautstärke des Schallsignals in Abhängigkeit vor der Position des Objektes regelbar sein. Dabei erweist sich als vorteilhaft, wenn das Objekterfassungssystem ein Videosystem und/oder eine Infrarotkamera und/oder Radar ist. Preferably, a plurality of loudspeakers form the sound source. For this purpose, the speakers are arranged to a common field and at an angle to each other inclined so that their common radiation is focused. Advantageously, the sound source is connected to the vehicle and so tiltable and / or pivotally mounted and mechanically or electrically aligned. In this way, a pivoting of the sound source, and thus a tracking of the vulnerable object, possible if its position changes relative to the motor vehicle. Furthermore, it is particularly advantageous if the object detection system is connected to the sound source via a controller, so that the settings of the sound source can be controlled as a function of the object detection via the controller. Thus, in a preferred embodiment, the volume of the sound signal in dependence on the position of the object can be controlled. It proves to be advantageous if the object detection system is a video system and / or an infrared camera and / or radar.
Das erfindungsgemäße Verfahren zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges, insbesondere eines Elektrofahrzeuges oder eines Hybridfahrzeuges, umfasst die Schritte Erfassen eines Objektes, Ermitteln eines Gefahrenbereiches für das erfasste Objekt und das Erzeugen eines Schallsignals durch die Schallquelle in Abhängigkeit von dem ermittelten Gefahrenbereich, wobei die Schallquelle wenigstens einen Lautsprecher umfasst, mittels welchem das Schallsignal auf das erfasste Objekt in der Umgebung ausrichtbar ist. Bevorzugterweise wird durch die Schallquelle ein Ultraschall emittiert, so dass eine akustische Belästigung von nicht gefährdeten Objekten in der Fahrzeugumgebung nicht nur reduziert, sondern vollständig vermieden werden kann. The method according to the invention for warning at least one object in an environment of a motor vehicle, in particular an electric vehicle or a hybrid vehicle, comprises the steps of detecting an object, determining a danger area for the detected object and generating a sound signal by the sound source as a function of the determined danger area, wherein the sound source comprises at least one loudspeaker by means of which the sound signal can be aligned with the detected object in the environment. Preferably, an ultrasound is emitted by the sound source, so that an acoustic annoyance of non-vulnerable objects in the vehicle environment can not only be reduced, but completely avoided.
Ferner kann das Objekt mittels eines Objekterfassungssystems erfasst werden, welches über eine Steuerung mit der Schallquelle in Verbindung steht. Die Einstellungen der Schallquelle können dabei in Abhängigkeit des Objekterfassungssystems über die Steuerung geregelt werden, so dass die Schallquelle auf den ermittelten Gefahrenbereich des erfassten Objektes ausgerichtet werden kann. Vorteilhafterweise ist die Schallquelle derart beweglich an dem Fahrzeug gelagert, dass die Ausrichtung der Schallquelle an die Position des erfassten Objektes über die Steuerung fließend anpassbar ist. Furthermore, the object can be detected by means of an object detection system which is connected to the sound source via a controller. The settings of the sound source can be controlled by the controller as a function of the object detection system, so that the sound source can be aligned with the determined danger zone of the detected object. Advantageously, the sound source is movably mounted on the vehicle such that the orientation of the sound source to the position of the detected object via the control is fluently adaptable.
Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung erge- ben sich aus der nachfolgenden Beschreibung des Ausführungsbeispiels der Erfindung, welches in der Zeichnung dargestellt ist. Dabei ist zu beachten, dass die Figur 1 alle beschriebenen oder dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unab- hängig von ihrer Formulierung bzw. Darstellung in der Beschreibung bzw. in derOther features, applications and advantages of the invention will become apparent from the following description of the embodiment of the invention, which is illustrated in the drawing. It should be noted that FIG. 1 describes all features described or illustrated, alone or in any combination, as the subject matter of the invention, regardless of their summary in the patent claims or their dependency, and independently of their formulation or representation in the description or description. in the
Zeichnung nur einen beschreibenden Charakter hat und nicht dazu gedacht ist, die Erfindung in irgendeiner Form einzuschränken. Drawing has only a descriptive character and is not intended to limit the invention in any way.
Zeichnungen drawings
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung erläutert. Es zeigt Figur 1 schematisch ein Kraftfahrzeug mit einer erfindungsgemäßen Fahrzeugvorrichtung und mehrere in der Fahrzeugumgebung befindliche Objekte. Hereinafter, an embodiment of the invention will be explained with reference to a drawing. 1 shows schematically a motor vehicle with a vehicle device according to the invention and several objects located in the vehicle environment.
Beschreibung von Ausführungsformen ln Figur 1 ist schematisch eine Verkehrsituation dargestellt mit einem Kraftfahrzeug 10 sowie einer erfindungsgemäßen Fahrzeugvorrichtung und einem ersten Objekt 30 und einem zweiten Objekt 32. Bei dem Kraftfahrzeug 10 handelt es sich im dargestellten Ausführungsbeispiel um ein elektrisch betriebenes Kraftfahrzeug 10, beispielsweise mit einem Hybridantrieb, wobei sich dieses während des elektrischen Antriebs durch einen geringen Geräuschpegel auszeichnet. Hieraus kann jedoch die Gefahrsituation entstehen, dass das Kraftfahrzeug 10 von anderen Verkehrsteilnehmern, wie beispielsweise den Objekten 30, 32 erst sehr spät oder gar nicht wahrgenommen wird. Um derartigen Situationen entgegen zu wirken, weist das Kraftfahrzeug 10 mehrere in einem Verkleidungselement 40 angeordnete Schallquellen 41 , 42, 43, 44, 45, 46 auf, mit dem ein gerichtetes Schallsignal 60 erzeugbar ist. Diese Schallquellen 41 , 42, 43, 44, 45, 46 weisen somit insbesondere den Vorteil auf, dass das Schallsignal 60 derart gebündelt abgestrahlt werden kann, dass dieses nur in einem kleinen Bereich hörbar ist, so dass die Objekte 30, 32 in der Umgebung des Kraftfahrzeuges 10 gezielt beschallt werden können. Das Schallsignal 60 wird dabei nur dann auf in der Umgebung des Kraftfahrzeuges 10 befindliche Objekte 30, 32 gerichtet, wenn eine Gefahrensituation erkannt wird. Zum Erkennen dieser Gefahrensituation umfasst das Fahrzeug 10 eine Objekterfassungsvorrichtung 50, anhand welcher die jeweilige Position der in der Umgebung des Kraftfahrzeuges 10 dargestellten Objekte 30, 32 ermittelbar ist. Das Objekterfassungssystem 50 weist zu diesem Zweck vorzugsweise eine oder mehrere nicht dargestellte Kameras und/oder Infrarotkameras und/oder Radarsensoren auf, wobei diese mit einer ebenfalls nicht näher dargestellten Steuerung gekoppelt sind. Als Objekte 30, 32, sind insbesondere Fußgänger, Radfahrer, Fahrzeuge, Tiere, ortsfeste Objekte und andere Verkehrsteilnehmer unterscheidbar und identifizierbar. Description of embodiments FIG. 1 schematically shows a traffic situation with a motor vehicle 10 and a vehicle device according to the invention and a first object 30 and a second object 32. In the illustrated exemplary embodiment, the motor vehicle 10 is an electrically powered motor vehicle 10, for example with a hybrid drive this is characterized during the electric drive by a low noise level. From this, however, the danger situation may arise that the motor vehicle 10 is perceived by other road users, such as the objects 30, 32 until very late or not at all. In order to counteract such situations, the motor vehicle 10 has a plurality of sound sources 41, 42, 43, 44, 45, 46 arranged in a cladding element 40, with which a directed sound signal 60 can be generated. These sound sources 41, 42, 43, 44, 45, 46 thus have the particular advantage that the sound signal 60 can be emitted bundled in such a way that it can only be heard in a small area, so that the objects 30, 32 in the surroundings of the motor vehicle 10 can be targeted sonicated. The sound signal 60 is only directed to located in the vicinity of the motor vehicle 10 objects 30, 32, when a dangerous situation is detected. To detect this dangerous situation, the vehicle 10 comprises an object detection device 50, by means of which the respective position of the objects 30, 32 shown in the surroundings of the motor vehicle 10 can be determined. The object detection system 50 preferably has one or more cameras (not shown) and / or infrared cameras and / or radar sensors for this purpose, these being coupled to a control (also not shown). As objects 30, 32, in particular pedestrians, cyclists, vehicles, animals, fixed objects and other road users are distinguishable and identifiable.
In der dargestellten Situation erfolgt über das Objekterfassungssystem 50 eine Erfassung des ersten Objektes 30. Nach der anschließenden Ermittlung eines Gefahrenbereiches für das erfasste Objekt 30 werden die Schallquellen 41 , 42, 43, 44, 45, 46 in Abhängigkeit des ermittelten Gefahrenbereiches auf das gefährdete Objekt 30 ausgerichtet und ein Schallsignal 60 wird, um eine mögliche Kollision zu vermeiden, gezielt auf das Objekt 30 abgegeben, wobei das Schallsignal 60 insbesondere als Warnsignal ausgebildet ist. Im dargestellten Ausführungsbeispiel wird dafür die Schallquelle 45 verwendet. Vorstellbar ist auch, dass die Schallquellen 41 , 42, 43, 44, 45, 46 einen Ultraschall abgeben, welches auch nur von dem Objekt 30, bei dem es sich um einen Fußgänger handelt, hörbar ist.In the illustrated situation, detection of the first object 30 takes place via the object detection system 50. After the subsequent determination of a danger area for the detected object 30, the sound sources 41, 42, 43, 44, 45, 46 are dependent on the determined danger area on the endangered object 30 aligned and a sound signal 60 is to a possible To avoid collision, specifically delivered to the object 30, wherein the sound signal 60 is formed in particular as a warning signal. In the illustrated embodiment, the sound source 45 is used for this purpose. It is also conceivable that the sound sources 41, 42, 43, 44, 45, 46 emit an ultrasound, which is audible only by the object 30, which is a pedestrian.
Das zweite Objekt 32, welches sich zwar in der in der Umgebung des Kraftfahrzeugs 10, aber nicht im unmittelbaren Gefahrenbereich befindet, kann das auf das Objekt 30 gerichtete Schallsignal 60 je nach Ausführungsart nicht oder nur stark vermindert wahrnehmen und wird somit weder abgelenkt noch durch Lärm akut belästigt. The second object 32, which is located in the vicinity of the motor vehicle 10 but not in the immediate danger zone, can not perceive the sound signal 60 directed to the object 30, depending on the embodiment, or only greatly diminished, and is thus neither distracted nor disturbed by noise harassed.
Zumindest eine der dargestellten Schallquellen 41 , 42, 43, 44, 45, 46 kann auch als Ultraschallsensor einer Einparkassistenzvorrichtung ausgebildet sein, wobei im vorliegenden Ausführungsbeispiel sechs Schallquellen 41 , 42, 43, 44, 45, 46 in ein Verkleidungselement 40 eines vorderen, nicht näher dargestellten Stoßfängers integriert sind. Weitere Schallquellen sind im Ausführungsbeispiel nicht dargestellt, können aber überall am und/ oder im Kraftfahrzeug 10 integriert sein. Aus der gleichzeitigen Verwendung von Ultraschallsensoren der Einparkassistenzvorrichtung zur Erfassung eines Abstands beispielsweise zu den Objekten 30, 32 in der Umgebung des Kraftfahrzeuges 10 und als Schallquelle zur Erzeugung eines gerichteten Schallsignals 60 resultiert in besonders vorteilhafter Weise eine Verringerung von Materialkosten und eine Gewichtsverringerung. Auch wird das äußere Erscheinungsbild des Kraftfahrzeuges 10 nicht negativ beeinträchtigt und nachteilige, aufwändige Anordnungen zur Integration der Schallquellen 41 , 42, 43, 44, 45, 46 in das Kraftfahrzeug 10 entfallen. At least one of the illustrated sound sources 41, 42, 43, 44, 45, 46 may also be formed as an ultrasonic sensor Einparkassistenzvorrichtung, in the present embodiment, six sound sources 41, 42, 43, 44, 45, 46 in a cladding element 40 of a front, not integrated bumper are integrated. Other sound sources are not shown in the embodiment, but may be integrated anywhere on and / or in the motor vehicle 10. From the simultaneous use of ultrasonic sensors of the parking assistance device for detecting a distance, for example to the objects 30, 32 in the environment of the motor vehicle 10 and as a sound source for generating a directed sound signal 60 results in a particularly advantageous manner, a reduction of material costs and a reduction in weight. Also, the external appearance of the motor vehicle 10 is not adversely affected and disadvantageous, complex arrangements for the integration of the sound sources 41, 42, 43, 44, 45, 46 omitted in the motor vehicle 10.
Bevorzugterweise sind die Schallquellen 41 , 42, 43, 44, 45, 46 durch eine Mehrzahl von Lautsprechern ausgebildet. Diese können zu einem gemeinsamen Feld und unter einem Winkel so gegeneinander geneigt angeordnet sein, dass deren gemeinsame Abstrahlung fokussierbar ist. Vorteilhaft sind die Schallquellen 41 ,Preferably, the sound sources 41, 42, 43, 44, 45, 46 are formed by a plurality of speakers. These may be arranged inclined to one another at a common field and at an angle relative to one another such that their joint emission can be focused. Advantageous are the sound sources 41,
42, 43, 44, 45, 46 kippbar und/oder schwenkbar mit dem Kraftfahrzeug 10 verbunden und können mechanisch oder elektrisch ausgerichtet werden. Auf diese Weise wird ein Mitschwenken der Schallquellen 41 , 42, 43, 44, 45, 46 und damit ein Nachverfolgen von Objekten 30, 32 ermöglicht, wenn sich deren jeweilige Positionen gegenüber dem Kraftfahrzeug 10 verändern. Alternativ können die Lautsprecher als Ultraschalllautsprecher ausgebildet sein. Denkbar ist auch die Nutzung der Richtwirkung durch ein so genanntes Phasen Array der einzeln modulierten Schalquellen 41 , 42, 43, 44, 45, 46, so dass auch das gerichtete Schallsignal 60 selber schwenkbar erzeugt werden kann. Besonders vorteilhaft ist es, wenn das Objekterfassungssystem 50 über eine nicht dargestellte Steuerung mit den Schallquellen 41 , 42, 43, 44, 45, 46 in Verbindung steht, so dass die Einstellungen der Schallquellen 41 , 42, 43, 44, 45, 46 in Abhängigkeit vom Objekterfassungssystem 50 über die Steuerung regelbar sind. Dabei kann die An- steuerung der Schallquellen 41 , 42, 43, 44, 45, 46 auch elektrisch erfolgen. Auf diese Weise ist es möglich, dass beispielsweise die Lautstärke und/ oder die Art des Schallsignals 60 in Abhängigkeit vor der Position der Objekte 30, 32 einstellbar ist. Verlässt das gefährdete Objekt 30 beispielsweise den Gefahrenbereich schaltet die Steuerung das Schallsignal 60 ab. Als besonders vorteilhaft erweist sich ein Videosystem und/oder eine Infrarotkamera und/oder Radar als Objekterfassungssystem 50. Vorzugsweise ist das Objekterfassungssystem 50 oder mehrere Objekterfassungssysteme 50 jeweils in die Schalquellen 41 , 42, 43, 44, 45, 46 integriert oder direkt benachbart zu diesen angeordnet. 42, 43, 44, 45, 46 tiltably and / or pivotally connected to the motor vehicle 10 and can be mechanically or electrically aligned. In this way, a pivoting of the sound sources 41, 42, 43, 44, 45, 46 and thus tracking objects 30, 32 when their respective positions relative to motor vehicle 10 change. Alternatively, the speakers can be designed as ultrasonic speakers. It is also conceivable to use the directivity by a so-called phase array of individually modulated sound sources 41, 42, 43, 44, 45, 46, so that the directional sound signal 60 itself can be generated pivotable. It is particularly advantageous if the object detection system 50 is connected to the sound sources 41, 42, 43, 44, 45, 46 via a control, not shown, so that the settings of the sound sources 41, 42, 43, 44, 45, 46 in FIG Depending on the object detection system 50 can be controlled via the controller. The actuation of the sound sources 41, 42, 43, 44, 45, 46 can also take place electrically. In this way it is possible that, for example, the volume and / or the nature of the sound signal 60 in dependence on the position of the objects 30, 32 is adjustable. If the endangered object 30 leaves the danger zone, for example, the control switches off the sound signal 60. A video system and / or an infrared camera and / or radar proves to be particularly advantageous as an object detection system 50. Preferably, the object detection system 50 or a plurality of object detection systems 50 are respectively integrated into the sound sources 41, 42, 43, 44, 45, 46 or directly adjacent to them arranged.
Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt, sondern umfasst auch gleichwirkende weitere Ausführungsformen. Die Figurenbeschreibung dient lediglich dem Verständnis der Erfindung. The invention is not limited to the embodiments described, but also includes equivalent other embodiments. The description of the figures is only for understanding the invention.

Claims

Ansprüche claims
1 . Fahrzeugvorrichtung zur Warnung wenigstens eines Objektes in einer Umgebung eines Kraftfahrzeuges (10), insbesondere eines Elektrofahrzeuges oder eines Hybridfahrzeuges, umfassend zumindest eine Schallquelle (41 , 42, 43, 44, 45, 46) zur Erzeugung eines Schallsignals (60) und ein an dem Kraftfahrzeug (10) angeordnetes Objekterfassungssystem (50) zur Erfassung von wenigstens einem Objekt (30, 32), dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) wenigstens einen Lautsprecher um- fasst, mittels welchem das Schallsignal (60) auf das erfasste Objekt (30, 32) in der Umgebung richtbar ist. 1 . Vehicle device for warning at least one object in an environment of a motor vehicle (10), in particular an electric vehicle or a hybrid vehicle, comprising at least one sound source (41, 42, 43, 44, 45, 46) for generating a sound signal (60) and at the Motor vehicle (10) arranged object detection system (50) for detecting at least one object (30, 32), characterized in that the sound source (41, 42, 43, 44, 45, 46) comprises at least one speaker, by means of which Sound signal (60) can be directed to the detected object (30, 32) in the environment.
2. Fahrzeugvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) beweglich, kippbar und/oder schwenkbar mit dem Kraftfahrzeug (10) verbunden ist. 2. Vehicle device according to claim 1, characterized in that the sound source (41, 42, 43, 44, 45, 46) is movably, tiltably and / or pivotally connected to the motor vehicle (10).
3. Fahrzeugvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) mechanisch ausrichtbar ist. 3. Vehicle device according to claim 1 or 2, characterized in that the sound source (41, 42, 43, 44, 45, 46) is mechanically aligned.
4. Fahrzeugvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) ein Ultraschallsignal erzeugen kann. 4. Vehicle device according to one of claims 1 to 3, characterized in that the sound source (41, 42, 43, 44, 45, 46) can generate an ultrasonic signal.
5. Fahrzeugvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) ein parametrisches Schallsignal (60) erzeugen kann. 5. Vehicle device according to claim 4, characterized in that the sound source (41, 42, 43, 44, 45, 46) can generate a parametric sound signal (60).
6. Fahrzeugvorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) durch eine Mehrzahl von Ultraschalllautsprechern gebildet ist, welche zu einem Feld angeordnet sind, wobei die einzelnen Ultraschalllautsprecher unter einem Winkel so gegenei- nander geneigt angeordnet sind, dass deren gemeinsame Abstrahlung fokussierbar ist. 6. Vehicle device according to claim 4 or 5, characterized in that the sound source (41, 42, 43, 44, 45, 46) is formed by a plurality of ultrasonic speakers, which are arranged in a field, wherein the individual ultrasonic speakers at an angle so opposite Nander are inclined, that their common radiation is focused.
Fahrzeugvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) elektrisch ausrichtbar ist. Vehicle device according to one of the preceding claims, characterized in that the sound source (41, 42, 43, 44, 45, 46) is electrically alignable.
Fahrzeugvorrichtung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass zumindest eine Schallquelle (41 , 42, 43, 44, 45, 46) aus einem Ultraschallsensor einer Einparkassistenzvorrichtung gebildet ist. Vehicle device according to one of claims 4 to 7, characterized in that at least one sound source (41, 42, 43, 44, 45, 46) is formed from an ultrasonic sensor of a parking assistance device.
Fahrzeugvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Objekterfassungssystem (50) über eine Steuerung in Verbindung mit der Schallquelle (41 , 42, 43, 44, 45, 46) steht und die Einstellungen der Schallquelle (41 , 42, 43, 44, 45, 46) in Abhängigkeit des Objekterfassungssystems (50) über die Steuerung regelbar sind. Vehicle device according to one of the preceding claims, characterized in that the object detection system (50) via a control in connection with the sound source (41, 42, 43, 44, 45, 46) is and the settings of the sound source (41, 42, 43, 44, 45, 46) are controllable via the controller as a function of the object detection system (50).
Fahrzeugvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Lautstärke des Schallsignals (60) in Abhängigkeit von der Position des Objektes (30, 32) regelbar ist. Verfahren zur Warnung wenigstens eines Objektes (30, 32) in einer Umgebung eines Kraftfahrzeuges (10), insbesondere eines Elektrofahrzeuges oder eines Hybridfahrzeuges, mit den Schritten: Vehicle device according to one of the preceding claims, characterized in that the volume of the sound signal (60) in dependence on the position of the object (30, 32) is controllable. Method for warning at least one object (30, 32) in an environment of a motor vehicle (10), in particular an electric vehicle or a hybrid vehicle, with the steps:
• Erfassen eines Objektes (30, 32), Detecting an object (30, 32),
• Ermitteln eines Gefahrenbereiches für das erfasste Objekt (30, 32), Determining a danger area for the detected object (30, 32),
• Erzeugen eines Schallsignals (60) durch die Schallquelle (41 , 42, 43, 44, 45, 46) in Abhängigkeit von dem Gefahrenbereich, dadurch gekennzeichnet, dass die Schallquelle (41 , 42, 43, 44, 45, 46) wenigstens einen Lautsprecher umfasst, mittels welchem das Schallsignal (60) auf das erfasste Objekt (30, 32) in der Umgebung gerichtet wird. Generating a sound signal (60) by the sound source (41, 42, 43, 44, 45, 46) as a function of the danger zone, characterized in that the sound source (41, 42, 43, 44, 45, 46) at least one Speaker, by means of which the sound signal (60) is directed to the detected object (30, 32) in the environment.
12. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass durch die Schallquelle (41 , 42, 43, 44, 45, 46) ein Ultraschall emittiert wird. 12. The method according to claim 10, characterized in that an ultrasound is emitted by the sound source (41, 42, 43, 44, 45, 46).
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass zumindest eine Schallquelle (41 , 42, 43, 44, 45, 46) aus einem Ultraschallsensor einer Ein- parkassistenzvorrichtung gebildet wird. 13. The method according to claim 12, characterized in that at least one sound source (41, 42, 43, 44, 45, 46) is formed from an ultrasonic sensor of a Einparkassistenzvorrichtung.
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