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EP2136346A2 - Parking guidance system with navigation of vehicle looking for a space to a free parking space - Google Patents

Parking guidance system with navigation of vehicle looking for a space to a free parking space Download PDF

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Publication number
EP2136346A2
EP2136346A2 EP09162718A EP09162718A EP2136346A2 EP 2136346 A2 EP2136346 A2 EP 2136346A2 EP 09162718 A EP09162718 A EP 09162718A EP 09162718 A EP09162718 A EP 09162718A EP 2136346 A2 EP2136346 A2 EP 2136346A2
Authority
EP
European Patent Office
Prior art keywords
parking
vehicle
information
vehicles
guidance system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09162718A
Other languages
German (de)
French (fr)
Other versions
EP2136346A3 (en
Inventor
Michael Uelschen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2136346A2 publication Critical patent/EP2136346A2/en
Publication of EP2136346A3 publication Critical patent/EP2136346A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
    • G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
    • G08G1/147—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is within an open public zone, e.g. city centre
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
    • G08G1/0141—Measuring and analyzing of parameters relative to traffic conditions for specific applications for traffic information dissemination
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
    • G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
    • G08G1/143—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces inside the vehicles

Definitions

  • the present invention relates to a parking guidance system for navigating a parking space-seeking vehicle to a free parking space according to claim 1, a detection unit according to claim 11 and a navigation unit according to claim 12.
  • Modern inner-city parking guidance systems work according to a simple principle. If the number of parking spaces and the inflow and outflow of the vehicles are known, this can easily determine the availability of free parking. Signposting the access roads and dynamically updating the parking information allows vehicles to navigate to free parking. Due to the principle, however, this results in the following restrictions, namely that the parking areas must be clearly defined, and the entry and exit of the vehicles must always be precisely controlled. For this purpose, structural measures, such as barriers or the like, are required.
  • the navigation of a vehicle to a parking lot is in the EP 1 365 213 A1 and the EP 1 070 635 A2
  • the methods used are based solely on static information stored in the vehicle. A consideration of actually free parking spaces not done.
  • the vehicle navigation of a vehicle to a free, centrally managed parking lot is in the KR20040102388 documented, where current information is exchanged between the vehicle and a central office.
  • the DE 44 33 982 C1 known to transmit information about parking with the TMC channel (Traffic Message Channel) of the Radio Data System (RDS) of a car radio.
  • TMC channel Traffic Message Channel
  • RDS Radio Data System
  • the search for free parking spaces is particularly time-consuming and thus unnecessarily harmful to the environment and burdens noise, especially in inner cities or densely populated areas with little available parking spaces, such as residential districts with pre-war development.
  • the parking guidance system according to the invention for navigating a parking space-seeking vehicle to a free parking space with the detection and navigation unit provided for this purpose has the advantage that navigation of the parking space-seeking vehicle is possible in a simple and reliable manner to a parking lot freed only in a timely manner.
  • this information about the free parking space is always determined dynamically and is therefore current. In particular, no restrictions or structural measures to determine the free parking are required.
  • a detection unit and a navigation unit in the vehicles as part of the parking guidance system according to the invention can be based on previous navigation systems.
  • the detection unit for a car park-exploring vehicle is provided as part of the parking guidance system and accomplishes reliably finding a vacant parking lot by means of a sensor and forwarding the information about a free parking lot to a communication device of a parking-looking vehicle or to a control center, for which the detection unit is a navigation system, a communication device and a processing device.
  • a navigation unit is provided for a parking lot searching vehicle as part of the parking guidance system to reliably receive and process the information about the free parking lot from the detection unit of a parking lot exploring vehicle or the center, and then securely navigate the driver to the free parking space, for which Navigation unit comprises a navigation system, a communication device and a processing device.
  • the information exchange can be initiated by the parking-space-seeking vehicle or by the control center, which initially collects the information of one or more parking-exploring vehicles and processes them for the parking-looking vehicles and then transmits them.
  • the information transmission over a free parking lot of the car park Ausforschenden vehicle is provided with a timestamp, which is transmitted in addition to the transmission of the position data on the free parking, which determine when queried by the parking lot looking for the timeliness of the information about the free parking leaves.
  • a good detection of free parking is available, if the useful for researching the free parking vehicles are equipped with at least one sensor for parking space detection.
  • the at least one sensor can operate on an optical and / or non-optical basis.
  • a reliable exchange of information can be accomplished if the direct exchange of information between the two vehicles takes place via an air interface, such as GSM, UMTS, WLAN or the like.
  • a further improvement of the free parking space recognition is given when the information about free parking spaces are determined periodically.
  • a further improvement can be achieved if the parking space-exploring vehicles are vehicles for local public transport, in particular regular buses, or taxi vehicles or the like.
  • a further improvement can be achieved if in addition also ausparkende vehicles during or immediately after leaving their parking lot independently submit the information about the cleared parking lot to the parking-looking vehicle or to the control center for forwarding to the parking-looking vehicle.
  • the parking guidance system for a parking lot search vehicle extends known parking guidance systems in that the navigation of vehicles to free parking spaces is done by other on-traffic vehicles providing the information on free parking lots.
  • a parking guidance system is in Fig. 1 schematically shown in its two different embodiments, wherein the reference numeral 1 denotes a parking space-exploring vehicle and the reference numeral 2 a parking-looking vehicle.
  • the parking space exploring vehicles 1 are equipped with a position determining device, such as a GPS (Global Positioning System) device or a navigation system 4, so as to be able to determine the location or position data of the free parking lot.
  • a communication device 5 for example in the form of a transmitting and receiving unit, then the information is forwarded.
  • the parking space exploring vehicles 1 combined with their navigation system 4 and the communication device 5 thus act as individual sensors 16, which free parking 8 in passing can recognize.
  • a processing device 6 in the vehicle 1 controls this method and triggers the transmission of the position data by means of the communication device 5 when the free parking space 8 is detected.
  • the functions of navigation system 4, communication device 5 and processing device 6 are preferably combined in a single unit or device, referred to below as a detection unit.
  • the parking-space searching vehicles 2 also have a navigation system 4 ', a communication device 5' and a processing device 6 ', which are preferably likewise combined in a single unit or device referred to below as a navigation unit.
  • the detection unit and the navigation unit in a vehicle may be functionally combined into a single unit. So this vehicle can serve as a sensor 16 for free parking while driving and forward this accordingly.
  • this vehicle can serve as a sensor 16 for free parking while driving and forward this accordingly.
  • the navigation unit query the information about free parking in the vicinity done, and then to be able to initiate the appropriate navigation to the free parking.
  • Recognition of a free parking space 8 by means of the vehicle 1 passing by at the free parking space can take place via at least one sensor 16 on an optical basis, for example with a camera mounted on the vehicle 1, and / or non-optical base, for example by electromagnetic induction.
  • This information can be processed in the processing device 6 and other vehicles 2 for car park navigation by means of an air interface, such as GSM (Global System for Mobile Communication as the standard for digital mobile communication), WLAN (Wireless Local Area Network: Wireless Radio Network, for example, IEEE 802.11g) or the like, transmit.
  • GSM Global System for Mobile Communication as the standard for digital mobile communication
  • WLAN Wireless Local Area Network: Wireless Radio Network, for example, IEEE 802.11g
  • the vehicle 1 determines when driving by with his at least one sensor 16 right and possibly also left the free parking 8. This information is provided together with the current position with a time stamp.
  • Another vehicle 2 can transmit this information directly via an in Fig.
  • the parking-centered vehicle 1 drawn channel (a) from the parking-centered vehicle 1 or indirectly via a central station 3 via a channel (c) receive.
  • the information of the parking-centered vehicle 1 is first transmitted via a channel (b) to the central office 3 and then via the further channel (c) to the parking-space searching vehicle 2.
  • Fig. 2 is shown in a simplified representation of the process of direct communication between two vehicles in more detail.
  • the parking lot exploring vehicle 1 determines the position and the current time to a vacant parking lot. This location and time information is then transmitted to the parking lot seeking vehicle 2. This transmission can be initiated by the parking space exploring vehicle 1 or explicitly requested by the parking space searching vehicle 2 (optional).
  • the parking-looking vehicle 2 receives the location and time information, evaluates it and can be guided by its navigation system 4 'to the free parking lot. Traveling vehicles 1 thus determine by means of an automated method in passing the availability of free parking spaces or parking areas along the roadside and designated public parking lots. This procedure can For example, be controlled by the located in the vehicle 1 processing device 6.
  • an additional comparison with road map data can take place, for example by comparison with the navigation system 4 present in the vehicle 1.
  • the transmission can be initiated, as indicated by arrow 11, at the request of the parking-space searching vehicle 2 to the parking space exploring vehicle 1, whereupon the parking space exploring vehicle 1 transmits the information, see arrow 10.
  • the moving vehicle 2 in search of a parking space receives the previously determined information 10 about free parking.
  • the transmitted time stamp can be found by the parking-looking vehicle 2 on the presence of a free parking lot and its timeliness and transmit the driver in the vehicle 2 via the navigation unit visually or by voice.
  • the transmission of the parking space information can be carried out in addition to the explained direct communication between two vehicles 1, 2 also indirectly via a central station 3.
  • the distribution to searching vehicles 2 is in the push method, for example a transmission by means of RDS (Radio Data System) data services, or in pull method (call method) via an air interface (GSM, UMTS (Universal Mobile Telecommunications System as a successor to GSM with increased data transfer rate), WLAN, ...) possible.
  • RDS Radio Data System
  • pull method via an air interface
  • GSM Universal Mobile Telecommunications System as a successor to GSM with increased data transfer rate
  • WLAN Wireless Local Area Network
  • the information from the center 3 is automatically transmitted to the vehicle 2.
  • the pull method the information is transmitted from the center 3 only on request from the parking-looking vehicle 2.
  • the information can be directly, d. H. without central office 3, between two vehicles 1, 2 via an air interface, such as Bluetooth, GSM or the like, to be replaced.
  • the method can be extended so that the parking space information is determined periodically via local public transport, for example by regular buses, or by taxi vehicles. This information can then be periodically transmitted to the center 3 or currently a nearby, parking-looking vehicle 2.
  • the parking guidance system according to the invention can be extended even further by parked vehicles, which are provided with a position determination system, in particular navigation system, when they leave their parking position without being asked to transmit this information to the center 3 or to passing vehicles 2, which accordingly the navigation unit are equipped as part of the parking guidance system according to the invention.
  • Fig. 3 alternatively, the communication between the two vehicles 1, 2 is shown in greater detail via the center 3.
  • the central office 3 assumes the function of collecting the information about free parking spaces of different vehicles 1 and then making them available to others.
  • the vehicle 1 first identifies the presence of a free parking space via its at least one sensor 16. In this case, the current position in the processing device 6 is noted and the current time deposited. This information is then transmitted by means of the communication device 5 of the center 3 see arrow 14. The initiation of this transmission can also take place spontaneously or, as indicated by arrow 15, by the control center 3 (optional) or by the vehicle 2 (optional), see arrow 11.
  • a parking-looking vehicle 2 can inquire at the headquarters 3 (optional), see arrow 11, whether there is a free parking lot in its immediate vicinity.
  • the central office 3 processes this request and then transmits the desired parking space information, see arrow 10, which in addition to the position coordinates also contains the actuality via the sent timestamp. Subsequently, this parking space information can be evaluated by the driver or his processing device 6 'and made available to the navigation system 4' or the navigation unit, which then initiates the navigation to the free parking space.
  • the parking guidance system according to the invention is particularly suitable for inner cities, which have a large number of parking spaces at the roadside.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Traffic Control Systems (AREA)
  • Navigation (AREA)

Abstract

The system investigates information about available free parking space (8) by using a parking space investigating vehicle (1). The parking space investigating vehicle transmits the information directly to a parking space searching vehicle (2) or indirectly to the parking space searching vehicle via a control center (3). The direct information exchange between the vehicles is performed via an air interface such as Global System for Mobile communications (GSM), Universal Mobile Telecommunications System (UMTS)and wireless local area network (WLAN).

Description

Stand der TechnikState of the art

Die vorliegende Erfindung betrifft ein Parkleitsystem zur Navigation eines parkplatzsuchenden Fahrzeugs zu einem freien Parkplatz nach Anspruch 1, eine Detektiereinheit nach Anspruch 11 sowie eine Navigationseinheit nach Anspruch 12.The present invention relates to a parking guidance system for navigating a parking space-seeking vehicle to a free parking space according to claim 1, a detection unit according to claim 11 and a navigation unit according to claim 12.

Moderne innerstädtische Parkleitsysteme arbeiten nach einem einfachen Prinzip. Sind die Anzahl der Parkplätze sowie der Zufluss und der Abfluss der Fahrzeuge bekannt, lässt sich hieraus einfach die Verfügbarkeit freier Parkplätze bestimmen. Durch eine entsprechende Beschilderung der Zufahrtsstraßen und einer dynamischen Aktualisierung der Parkplatzinformationen lassen sich Fahrzeuge zu freien Parkplätzen navigieren. Prinzipbedingt ergeben sich hieraus aber die folgenden Beschränkungen, und zwar, dass die Parkflächen klar umgrenzt sein müssen, sowie muss der Zu- und Abgang der Fahrzeuge stets genau kontrolliert werden. Hierzu sind bauliche Maßnahmen, wie Schranken oder dergleichen, erforderlich.Modern inner-city parking guidance systems work according to a simple principle. If the number of parking spaces and the inflow and outflow of the vehicles are known, this can easily determine the availability of free parking. Signposting the access roads and dynamically updating the parking information allows vehicles to navigate to free parking. Due to the principle, however, this results in the following restrictions, namely that the parking areas must be clearly defined, and the entry and exit of the vehicles must always be precisely controlled. For this purpose, structural measures, such as barriers or the like, are required.

Die Navigation eines Fahrzeugs zu einem Parkplatz ist in der EP 1 365 213 A1 und der EP 1 070 635 A2 beschrieben, wobei die verwendeten Verfahren einzig auf der Basis von statischen Informationen, die im Fahrzeug hinterlegt sind, basieren. Eine Berücksichtigung von tatsächlich freien Parkplätzen erfolgt nicht. Die Fahrzeugnavigation eines Fahrzeugs zu einem freien, zentral verwalteten Parkplatz ist in der KR20040102388 dokumentiert, wobei aktuelle Informationen zwischen dem Fahrzeug und einer Zentrale ausgetauscht werden. Ferner ist aus der DE 44 33 982 C1 bekannt, Informationen über Parkplätze mit dem TMC-Kanal (Traffic Message Channel) des Radio-Data-Systems (RDS) eines Autoradios zu übermitteln.The navigation of a vehicle to a parking lot is in the EP 1 365 213 A1 and the EP 1 070 635 A2 The methods used are based solely on static information stored in the vehicle. A consideration of actually free parking spaces not done. The vehicle navigation of a vehicle to a free, centrally managed parking lot is in the KR20040102388 documented, where current information is exchanged between the vehicle and a central office. Furthermore, from the DE 44 33 982 C1 known to transmit information about parking with the TMC channel (Traffic Message Channel) of the Radio Data System (RDS) of a car radio.

Aufgrund der beschriebenen Beschränkungen ist eine Navigation nur zu einer kleinen Zahl von freien Parkplätzen möglich. Mit den notwendigen baulichen Maßnahmen lassen sich somit üblicherweise nur Parkhäuser oder umzäunte Parkflächen in ein Parkleitsystem integrieren. Die weitaus größere Anzahl von freien Parkplätzen am Straßenrand oder nicht kontrollierten Parkplätzen, werden jedoch nicht betrachtet.Due to the limitations described, navigation is only possible for a small number of free parking spaces. With the necessary structural measures thus usually only parking garages or fenced parking areas can be integrated into a parking guidance system. However, the far greater number of free parking spaces at the roadside or unchecked parking lots are not considered.

Die Suche nach freien Parkplätzen ist insbesondere in Innenstädten oder dicht bewohnten Gebieten mit wenig verfügbaren Parkplätzen, wie beispielsweise Wohnbezirke mit Vorkriegsbebauung, zeitaufwendig und damit auch unnötig unweltschädlich und Geräusch belastend.The search for free parking spaces is particularly time-consuming and thus unnecessarily harmful to the environment and burdens noise, especially in inner cities or densely populated areas with little available parking spaces, such as residential districts with pre-war development.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Parkleitsystem zur Navigation eines parkplatzsuchenden Fahrzeugs zu einem freien Parkplatz mit der hierzu vorgesehenen Detektier- und Navigationseinheit hat demgegenüber den Vorteil, dass in einfacher und zuverlässiger Art und Weise eine Navigation des parkplatzsuchenden Fahrzeugs zu einem erst zeitnah freigewordenen Parkplatz möglich ist. Vorteilhafterweise wird diese Information über den freien Parkplatz stets dynamisch ermittelt und ist daher aktuell. Insbesondere sind keine Beschränkungen oder bauliche Maßnahmen zur Ermittlung der freien Parkplätze erforderlich.The parking guidance system according to the invention for navigating a parking space-seeking vehicle to a free parking space with the detection and navigation unit provided for this purpose has the advantage that navigation of the parking space-seeking vehicle is possible in a simple and reliable manner to a parking lot freed only in a timely manner. Advantageously, this information about the free parking space is always determined dynamically and is therefore current. In particular, no restrictions or structural measures to determine the free parking are required.

Dies ermöglicht eine zielgerichtete und damit schnelle Parkplatzsuche. Unnötiges "um den Block" fahren auf der Suche nach einem freien Parkplatz wird zumindest reduziert bzw. lässt sich sogar komplett vermeiden.This allows a targeted and thus fast parking search. Unnecessary "drive around the block" in search of a free parking space is at least reduced or can even be completely avoided.

Eine Detektiereinheit und eine Navigationseinheit in den Fahrzeugen als Teil des erfindungsgemäßen Parkleitsystems können auf bisherige Navigationssysteme aufbauen. So ist die Detektiereinheit für ein parkplatzausforschendes Fahrzeug als Teil des Parkleitsystems vorgesehen und bewerkstelligt zuverlässig das Auffinden eines freien Parkplatzes mittels Sensor und Weiterleiten der Information über einen freien Parkplatz an eine Kommunikationseinrichtung eines parkplatzsuchenden Fahrzeugs oder an eine Zentrale, wofür die Detektiereinheit ein Navigationssystem, eine Kommunikationseinrichtung und eine Verarbeitungseinrichtung umfasst.A detection unit and a navigation unit in the vehicles as part of the parking guidance system according to the invention can be based on previous navigation systems. Thus, the detection unit for a car park-exploring vehicle is provided as part of the parking guidance system and accomplishes reliably finding a vacant parking lot by means of a sensor and forwarding the information about a free parking lot to a communication device of a parking-looking vehicle or to a control center, for which the detection unit is a navigation system, a communication device and a processing device.

Eine Navigationseinheit ist für ein parkplatzsuchendes Fahrzeug als Teil des Parkleitsystems vorgesehen, um zuverlässig die Information über den freien Parkplatz von der Detektiereinheit eines parkplatzausforschenden Fahrzeugs oder über die Zentrale zu empfangen, zu verarbeiten und anschließend sicher den Fahrer zu dem freien Parkplatz zu navigieren, wofür die Navigationseinheit ein Navigationssystem, eine Kommunikationseinrichtung und eine Verarbeitungseinrichtung umfasst.A navigation unit is provided for a parking lot searching vehicle as part of the parking guidance system to reliably receive and process the information about the free parking lot from the detection unit of a parking lot exploring vehicle or the center, and then securely navigate the driver to the free parking space, for which Navigation unit comprises a navigation system, a communication device and a processing device.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous embodiments of the invention will become apparent from the dependent claims and the description.

Vorteilhaft ist, dass variabel der Informationsaustausch von dem parkplatzsuchenden Fahrzeug initiiert werden kann oder durch die Zentrale erfolgt, welche die Informationen eines oder mehrer parkplatzausforschender Fahrzeuge zunächst sammelt und diese für die parkplatzsuchenden Fahrzeuge aufbereitet und anschließend übermittelt.It is advantageous that variably the information exchange can be initiated by the parking-space-seeking vehicle or by the control center, which initially collects the information of one or more parking-exploring vehicles and processes them for the parking-looking vehicles and then transmits them.

Von Vorteil ist, dass die Informationsübermittlung über einen freien Parkplatz des parkplatzausforschenden Fahrzeugs mit einem Zeitstempel versehen ist, der zusätzlich zur Übermittlung der Positionsdaten über den freien Parkplatz übermittelt wird, wodurch bei Abfrage durch das parkplatzsuchende Fahrzeug sich die Aktualität der Information über den freien Parkplatz feststellen lässt.It is advantageous that the information transmission over a free parking lot of the car park Ausforschenden vehicle is provided with a timestamp, which is transmitted in addition to the transmission of the position data on the free parking, which determine when queried by the parking lot looking for the timeliness of the information about the free parking leaves.

Eine vorteilhaft einfache Methode ist gegeben, wenn die Informationsübertragung an die parkplatzsuchenden Fahrzeuge im Push- oder Pull- Verfahren erfolgt.An advantageously simple method is given when the information is transmitted to the parking lot looking vehicles in a push or pull process.

Eine gute Erkennung freier Parkplätze liegt vor, wenn die zur Ausforschung der freien Parkplätze dienlichen Fahrzeuge mit zumindest einem Sensor zur Parkplatzerkennung ausgestattet sind. Vorteilhafterweise kann der zumindest eine Sensor auf optischer und/oder nichtoptischer Basis arbeiten.A good detection of free parking is available, if the useful for researching the free parking vehicles are equipped with at least one sensor for parking space detection. Advantageously, the at least one sensor can operate on an optical and / or non-optical basis.

Ein zuverlässiger Informationsaustausch lässt sich bewerkstelligen, wenn der direkte Informationsaustausch zwischen den zwei Fahrzeugen über eine Luftschnittstelle, wie GSM, UMTS, WLAN oder dergleichen, erfolgt.A reliable exchange of information can be accomplished if the direct exchange of information between the two vehicles takes place via an air interface, such as GSM, UMTS, WLAN or the like.

Eine weitere Verbesserung der freien Parkplatzerkennung ist gegeben, wenn die Informationen über freie Parkplätze periodisch ermittelt werden.A further improvement of the free parking space recognition is given when the information about free parking spaces are determined periodically.

Eine weitere Verbesserung kann erreicht werden, wenn es sich bei den parkplatzausforschenden Fahrzeugen um Fahrzeuge für den öffentlichen Personennahverkehr, insbesondere regelmäßig verkehrende Busse, oder um Taxi-Fahrzeuge oder dergleichen, handelt.A further improvement can be achieved if the parking space-exploring vehicles are vehicles for local public transport, in particular regular buses, or taxi vehicles or the like.

Eine weitere Verbesserung kann erreicht werden, wenn zusätzlich auch ausparkende Fahrzeuge beim oder unmittelbar nach dem Verlassen ihres Parkplatzes selbstständig die Information über den freigemachten Parkplatz an das parkplatzsuchende Fahrzeug oder an die Zentrale zur Weiterleitung an das parkplatzsuchende Fahrzeug übermitteln.A further improvement can be achieved if in addition also ausparkende vehicles during or immediately after leaving their parking lot independently submit the information about the cleared parking lot to the parking-looking vehicle or to the control center for forwarding to the parking-looking vehicle.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung näher erläutert und anhand der Zeichnung weiter verdeutlicht.Embodiments of the invention are explained in more detail in the following description and further illustrated with reference to the drawing.

Es zeigen:

Fig. 1
ein erfindungsgemäßes Parkleitsystem schematisch in zwei unterschiedlichen Ausführungsvarianten,
Fig. 2
in einer vereinfachten Darstellung den Ablauf einer direkten Kommunikation zwischen zwei Fahrzeugen und in
Fig. 3
in einer vereinfachten Darstellung den Ablauf einer indirekten Kommunikation zweier Fahrzeuge über eine Zentrale.
Show it:
Fig. 1
an inventive parking guidance system schematically in two different embodiments,
Fig. 2
in a simplified representation the course of a direct communication between two vehicles and in
Fig. 3
in a simplified representation of the course of an indirect communication of two vehicles via a central office.

Ausführungsformen der ErfindungEmbodiments of the invention

Das erfindungsgemäße Parkleitsystem für ein parkplatzsuchendes Fahrzeug erweitert bekannte Parkleitsysteme dahingehend, dass die Navigation von Fahrzeugen zu freien Stell- bzw. Parkplätzen durch andere, im Verkehr befindliche Fahrzeuge erfolgt, welche die Informationen über freie Parkplätze liefern. Ein derartiges Parkleitsystem ist in Fig. 1 in seinen zwei unterschiedlichen Ausführungsvarianten schematisch aufgezeigt, wobei mit dem Bezugszeichen 1 ein parkplatzausforschendes Fahrzeug und mit dem Bezugszeichen 2 ein parkplatzsuchendes Fahrzeug gekennzeichnet sind. Die parkplatzausforschenden Fahrzeuge 1 sind mit einer Positionsbestimmungseinrichtung, wie einem GPS (Global Positioning System) -Gerät bzw. einem Navigationssystem 4, ausgestattet, um so die Orts- bzw. Positionsdaten des freien Parkplatzes bestimmen zu können. Über eine Kommunikationseinrichtung 5, zum Beispiel in Form einer Sende- und Empfangseinheit, erfolgt dann die Weiterleitung der Information. Die parkplatzausforschenden Fahrzeuge 1 kombiniert mit ihrem Navigationssystem 4 und der Kommunikationseinrichtung 5 fungieren somit als einzelne Sensoren 16, welche freie Parkplätze 8 im Vorbeifahren erkennen können. Eine Verarbeitungseinrichtung 6 im Fahrzeug 1 steuert dieses Verfahren und löst bei erkanntem freiem Parkplatz 8 die Übermittlung der Positionsdaten mittels der Kommunikationseinrichtung 5 aus. Die Funktionen von Navigationssystem 4, Kommunikationseinrichtung 5 und Verarbeitungseinrichtung 6 sind vorzugsweise in einer einzigen, im Folgenden als Detektiereinheit bezeichneten Einheit oder Einrichtung zusammengefasst. Die parkplatzsuchenden Fahrzeuge 2 weisen ebenfalls ein Navigationssystem 4', eine Kommunikationseinrichtung 5' und eine Verarbeitungseinrichtung 6' auf, die vorzugsweise ebenfalls in einer einzigen, im Folgenden als Navigationseinheit bezeichneten Einheit oder Einrichtung zusammengefasst sind.The parking guidance system for a parking lot search vehicle according to the invention extends known parking guidance systems in that the navigation of vehicles to free parking spaces is done by other on-traffic vehicles providing the information on free parking lots. Such a parking guidance system is in Fig. 1 schematically shown in its two different embodiments, wherein the reference numeral 1 denotes a parking space-exploring vehicle and the reference numeral 2 a parking-looking vehicle. The parking space exploring vehicles 1 are equipped with a position determining device, such as a GPS (Global Positioning System) device or a navigation system 4, so as to be able to determine the location or position data of the free parking lot. Via a communication device 5, for example in the form of a transmitting and receiving unit, then the information is forwarded. The parking space exploring vehicles 1 combined with their navigation system 4 and the communication device 5 thus act as individual sensors 16, which free parking 8 in passing can recognize. A processing device 6 in the vehicle 1 controls this method and triggers the transmission of the position data by means of the communication device 5 when the free parking space 8 is detected. The functions of navigation system 4, communication device 5 and processing device 6 are preferably combined in a single unit or device, referred to below as a detection unit. The parking-space searching vehicles 2 also have a navigation system 4 ', a communication device 5' and a processing device 6 ', which are preferably likewise combined in a single unit or device referred to below as a navigation unit.

Selbstverständlich können die Detektiereinheit und die Navigationseinheit bei einem Fahrzeug funktionell zu einer einzigen Einheit zusammengefasst sein. So kann dieses Fahrzeug während der Fahrt einerseits als Sensor 16 für freie Parkplätze dienen und dies entsprechend weiterleiten. Andererseits kann für den Fall das ein Parkplatz gesucht wird, durch entsprechendes Betätigen der Navigationseinheit die Abfrage der Information über freie Parkplätze in der Nähe erfolgen, um dann die entsprechende Navigation zu dem freien Parkplatz einleiten zu können.Of course, the detection unit and the navigation unit in a vehicle may be functionally combined into a single unit. So this vehicle can serve as a sensor 16 for free parking while driving and forward this accordingly. On the other hand, in the event that a parking space is searched for, by appropriate operation of the navigation unit query the information about free parking in the vicinity done, and then to be able to initiate the appropriate navigation to the free parking.

Die Erkennung eines freien Parkplatzes 8 mittels des am freien Parkplatz vorbeifahrenden Fahrzeugs 1 kann über zumindest einen Sensor 16 auf optischer Basis, beispielsweise mit einer am Fahrzeug 1 montierten Kamera, und/oder nichtoptischer Basis, beispielsweise durch elektromagnetische Induktion, erfolgen. Diese Informationen lassen sich in der Verarbeitungseinrichtung 6 verarbeiten und anderen Fahrzeugen 2 zur Parkplatznavigation mittels einer Luftschnittstelle, wie GSM (Global System for Mobile Communication als Standard für digitale mobile Kommunikation), WLAN (Wireless Local Area Networt: Drahtloses Funknetz, beispielsweise IEEE 802.11g) oder dergleichen, übermitteln. Das Fahrzeug 1 ermittelt im Vorbeifahren mit seinem zumindest einen Sensor 16 rechts und gegebenenfalls auch links die freien Parkplätze 8. Diese Informationen werden zusammen mit der aktuellen Position mit einem Zeitstempel versehen. Ein weiteres Fahrzeug 2 kann diese Information direkt über einen in Fig. 1 eingezeichneten Kanal (a) vom parkplatzermittelten Fahrzeug 1 oder indirekt über eine Zentrale 3 über einen Kanal (c) erhalten. Hierzu werden die Informationen des parkplatzermittelten Fahrzeugs 1 zunächst über einen Kanal (b) zur Zentrale 3 und dann über den weiteren Kanal (c) zum parkplatzsuchenden Fahrzeug 2 übermittelt.Recognition of a free parking space 8 by means of the vehicle 1 passing by at the free parking space can take place via at least one sensor 16 on an optical basis, for example with a camera mounted on the vehicle 1, and / or non-optical base, for example by electromagnetic induction. This information can be processed in the processing device 6 and other vehicles 2 for car park navigation by means of an air interface, such as GSM (Global System for Mobile Communication as the standard for digital mobile communication), WLAN (Wireless Local Area Network: Wireless Radio Network, for example, IEEE 802.11g) or the like, transmit. The vehicle 1 determines when driving by with his at least one sensor 16 right and possibly also left the free parking 8. This information is provided together with the current position with a time stamp. Another vehicle 2 can transmit this information directly via an in Fig. 1 drawn channel (a) from the parking-centered vehicle 1 or indirectly via a central station 3 via a channel (c) receive. For this purpose, the information of the parking-centered vehicle 1 is first transmitted via a channel (b) to the central office 3 and then via the further channel (c) to the parking-space searching vehicle 2.

In Fig. 2 ist in einer vereinfachten Darstellung der Ablauf einer direkten Kommunikation zwischen zwei Fahrzeugen näher gezeigt. Das parkplatzausforschende Fahrzeug 1 bestimmt zu einem freien Parkplatz die Position sowie die aktuelle Zeit. Diese Orts- und Zeitinformationen werden dann dem parkplatzsuchenden Fahrzeug 2 übermittelt. Diese Übermittlung kann zum einen durch das parkplatzausforschende Fahrzeug 1 initiiert werden oder explizit durch das parkplatzsuchende Fahrzeug 2 angefordert werden (optional). Das parkplatzsuchende Fahrzeug 2 empfängt die Orts- und Zeitinformationen, bewertet diese und lässt sich mittels seines Navigationssystems 4' zu dem freien Parkplatz führen. Fahrende Fahrzeuge 1 ermitteln somit mittels eines automatisierten Verfahrens im Vorbeifahren die Verfügbarkeit freier Stell- bzw. Parkflächen am Straßenrand sowie ausgewiesener öffentlicher Parkplätze. Dieses Verfahren kann zum Beispiel von der im Fahrzeug 1 befindlichen Verarbeitungseinrichtung 6 gesteuert werden.In Fig. 2 is shown in a simplified representation of the process of direct communication between two vehicles in more detail. The parking lot exploring vehicle 1 determines the position and the current time to a vacant parking lot. This location and time information is then transmitted to the parking lot seeking vehicle 2. This transmission can be initiated by the parking space exploring vehicle 1 or explicitly requested by the parking space searching vehicle 2 (optional). The parking-looking vehicle 2 receives the location and time information, evaluates it and can be guided by its navigation system 4 'to the free parking lot. Traveling vehicles 1 thus determine by means of an automated method in passing the availability of free parking spaces or parking areas along the roadside and designated public parking lots. This procedure can For example, be controlled by the located in the vehicle 1 processing device 6.

Um die Qualität der tatsächlichen möglichen Parkflächen zu erhöhen, kann zusätzlich ein Abgleich mit Straßenkartendaten erfolgen, beispielsweise durch Abgleich mit dem im Fahrzeug 1 vorhandenen Navigationssystem 4. Durch die Verknüpfung mit der aktuellen Position, die durch das vorhandene Positionsbestimmungsverfahren bzw. Navigationssystem 4 bestimmt wurde, lassen sich somit freie Parkplätze zuverlässig ermitteln und zusätzlich mit einer Zeitinformation über die Aktualität des freien Parkplatzes, einem Zeitstempel, versehen. Die Übermittlung kann, siehe Pfeil 11, auf Anfrage des parkplatzsuchenden Fahrzeugs 2 an das parkplatzausforschende Fahrzeug 1 initiiert werden, woraufhin das parkplatzausforschende Fahrzeug 1 die Informationen, siehe Pfeil 10, übermittelt. Das fahrende Fahrzeug 2 auf der Suche nach einem Parkplatz erhält die zuvor ermittelten Informationen 10 über freie Parkplätze. Durch die Verarbeitung und Bewertung mit der im Fahrzeug 2 verbauten Verarbeitungseinrichtung 6', die Teil einer Navigationseinheit ist, ist eine zielgerichtete Navigation zu dem freien Parkplatz möglich. Sehr vorteilhaft ist dieses Vorgehen, wenn sich beide Fahrzeuge 1, 2 in der Nähe befinden.In order to increase the quality of the actual possible parking areas, an additional comparison with road map data can take place, for example by comparison with the navigation system 4 present in the vehicle 1. By linking with the current position determined by the existing positioning method or navigation system 4, Thus, free parking spaces can be determined reliably and additionally provided with time information about the timeliness of the free parking space, a time stamp. The transmission can be initiated, as indicated by arrow 11, at the request of the parking-space searching vehicle 2 to the parking space exploring vehicle 1, whereupon the parking space exploring vehicle 1 transmits the information, see arrow 10. The moving vehicle 2 in search of a parking space receives the previously determined information 10 about free parking. By the processing and evaluation with the built-in vehicle 2 processing device 6 ', which is part of a navigation unit, a targeted navigation to the free parking space is possible. This procedure is very advantageous if both vehicles 1, 2 are in the vicinity.

Mit Hilfe des übertragenen Zeitstempels lässt sich bei Abfrage durch das parkplatzsuchende Fahrzeug 2 über das Vorhandensein eines freien Parkplatzes auch seine Aktualität feststellen und dem Fahrer im Fahrzeug 2 über die Navigationseinheit optisch oder mittels Sprache übermitteln.With the help of the transmitted time stamp can be found by the parking-looking vehicle 2 on the presence of a free parking lot and its timeliness and transmit the driver in the vehicle 2 via the navigation unit visually or by voice.

Die Übermittlung der Parkplatzinformationen kann neben der erläuterten direkten Kommunikation zwischen zwei Fahrzeugen 1, 2 auch indirekt über eine Zentrale 3 erfolgen. Es liegen somit zwei Wege vor. Zum einen können die Informationen in der Parkplatzzentrale 3 gesammelt und aufbereitet werden. Die Verteilung an suchende Fahrzeuge 2 ist im Push-Verfahren, beispielsweise eine Übertragung mittels RDS (Radio Data System)-Datendienste, oder im Pull-Verfahren (Abrufverfahren) über eine Luftschnittstelle (GSM, UMTS (Universal Mobile Telecommunications System als Nachfolge zu GSM mit erhöhter Datenübertragungsrate), WLAN, ...) möglich. Im Push-Verfahren wird die Information von der Zentrale 3 automatisch an das Fahrzeug 2 übermittelt. Im Pull-Verfahren wird die Information von der Zentrale 3 erst auf Anfrage vom parkplatzsuchenden Fahrzeug 2 übermittelt. Zum anderen können die Informationen direkt, d. h. ohne Zentrale 3, zwischen zwei Fahrzeugen 1, 2 über eine Luftschnittstelle, wie Bluetooth, GSM oder dergleichen, ausgetauscht werden.The transmission of the parking space information can be carried out in addition to the explained direct communication between two vehicles 1, 2 also indirectly via a central station 3. There are thus two ways. On the one hand, the information in the parking lot center 3 can be collected and processed. The distribution to searching vehicles 2 is in the push method, for example a transmission by means of RDS (Radio Data System) data services, or in pull method (call method) via an air interface (GSM, UMTS (Universal Mobile Telecommunications System as a successor to GSM with increased data transfer rate), WLAN, ...) possible. In the push method, the information from the center 3 is automatically transmitted to the vehicle 2. In the pull method, the information is transmitted from the center 3 only on request from the parking-looking vehicle 2. On the other hand, the information can be directly, d. H. without central office 3, between two vehicles 1, 2 via an air interface, such as Bluetooth, GSM or the like, to be replaced.

Das Verfahren lässt sich dahingehend erweitern, dass die Parkplatzinformationen periodisch über den öffentlichen Personennahverkehr, beispielsweise durch regelmäßig verkehrende Busse, oder durch Taxi-Fahrzeuge ermittelt werden. Diese Informationen können dann periodisch der Zentrale 3 oder aktuell einem in der Nähe befindlichen, parkplatzsuchenden Fahrzeug 2 übermittelt werden.The method can be extended so that the parking space information is determined periodically via local public transport, for example by regular buses, or by taxi vehicles. This information can then be periodically transmitted to the center 3 or currently a nearby, parking-looking vehicle 2.

Das erfindungsgemäße Parkleitsystem lässt sich noch erweitern, indem parkende Fahrzeuge, die mit einem Positionsbestimmungssystem, insbesondere Navigationssystem, versehen sind, beim Verlassen ihrer Parkposition unaufgefordert diese Information an die Zentrale 3 oder an vorbeifahrende Fahrzeuge 2 übermitteln, die entsprechend mit der Navigationseinheit als Teil des erfindungsgemäßen Parkleitsystems ausgestattet sind.The parking guidance system according to the invention can be extended even further by parked vehicles, which are provided with a position determination system, in particular navigation system, when they leave their parking position without being asked to transmit this information to the center 3 or to passing vehicles 2, which accordingly the navigation unit are equipped as part of the parking guidance system according to the invention.

In Fig. 3 ist alternativ die Kommunikation zwischen den beiden Fahrzeugen 1, 2 über die Zentrale 3 näher dargestellt. Die Zentrale 3 übernimmt hierbei die Funktion, die Informationen über freie Parkplätze von verschiedenen Fahrzeugen 1 zu sammeln und diese dann anderen zur Verfügung zu stellen. Das Fahrzeug 1 identifiziert zunächst über seinen zumindest einen Sensor 16 das Vorliegen eines freien Parkplatzes. Dabei wird auch die aktuelle Position in der Verarbeitungseinrichtung 6 vermerkt und die aktuelle Zeit hinterlegt. Diese Informationen werden dann mittels der Kommunikationseinrichtung 5 der Zentrale 3 siehe Pfeil 14 übermittelt. Das Initiieren dieser Übermittlung kann auch spontan oder, siehe Pfeil 15, durch die Zentrale 3 (optional) bzw. durch das Fahrzeug 2 (optional), siehe Pfeil 11, erfolgen.In Fig. 3 alternatively, the communication between the two vehicles 1, 2 is shown in greater detail via the center 3. The central office 3 assumes the function of collecting the information about free parking spaces of different vehicles 1 and then making them available to others. The vehicle 1 first identifies the presence of a free parking space via its at least one sensor 16. In this case, the current position in the processing device 6 is noted and the current time deposited. This information is then transmitted by means of the communication device 5 of the center 3 see arrow 14. The initiation of this transmission can also take place spontaneously or, as indicated by arrow 15, by the control center 3 (optional) or by the vehicle 2 (optional), see arrow 11.

Ein parkplatzsuchendes Fahrzeug 2 kann bei der Zentrale 3 anfragen (optional), siehe Pfeil 11, ob in seiner näheren Umgebung ein freier Parkplatz vorliegt. Die Zentrale 3 verarbeitet diese Anfrage und übermittelt daraufhin die gewünschte Parkplatzinformation, siehe Pfeil 10, die neben den Positionskoordinaten auch die Aktualität über den mitgeschickten Zeitstempel enthält. Anschließend können diese Parkplatzinformationen vom Fahrer oder bzw. seiner Verarbeitungseinrichtung 6' bewertet und dem Navigationssystem 4' bzw. der Navigationseinheit zur Verfügung gestellt werden, welches dann das Navigieren zu dem freien Parkplatz einleitet.A parking-looking vehicle 2 can inquire at the headquarters 3 (optional), see arrow 11, whether there is a free parking lot in its immediate vicinity. The central office 3 processes this request and then transmits the desired parking space information, see arrow 10, which in addition to the position coordinates also contains the actuality via the sent timestamp. Subsequently, this parking space information can be evaluated by the driver or his processing device 6 'and made available to the navigation system 4' or the navigation unit, which then initiates the navigation to the free parking space.

Das erfindungsgemäße Parkleitsystem eignet sich besonders für Innenstädte, die eine Vielzahl von Parkplätzen am Straßenrand aufweisen.The parking guidance system according to the invention is particularly suitable for inner cities, which have a large number of parking spaces at the roadside.

Claims (12)

Parkleitsystem zur Navigation eines parkplatzsuchenden Fahrzeugs zu einem freien Parkplatz, dadurch gekennzeichnet, dass Informationen über verfügbare, freie Parkplätze (8) durch andere im Verkehr befindliche Fahrzeuge (1) zunächst ausgeforscht werden, welche dann diese Informationen direkt dem parkplatzsuchenden Fahrzeug (2) oder indirekt über eine Zentrale (3) dem parkplatzsuchenden Fahrzeug (2) übermitteln.Parking guidance system for navigating a parking-looking vehicle to a free parking space, characterized in that information about available, free parking (8) by other vehicles in traffic (1) are first explored, which then this information directly to the parking-looking vehicle (2) or indirectly via a central office (3) the parking-looking vehicle (2) transmit. Parkleitsystem nach Anspruch 1, dadurch gekennzeichnet, dass der Informationsaustausch von dem parkplatzsuchenden Fahrzeug (2) initiiert wird oder durch die Zentrale (3) erfolgt, welche die Informationen eines oder mehrer parkplatzausforschender Fahrzeuge (1) zunächst sammelt und diese für die parkplatzsuchenden Fahrzeuge (2) aufbereitet und anschließend übermittelt.Parking guidance system according to claim 1, characterized in that the information exchange is initiated by the parking space seeking vehicle (2) or by the control center (3), which collects the information of one or more parking exploring vehicles (1) first and this for the parking lot looking vehicles (2 ) and then transmitted. Parkleitsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Informationsübermittlung über einen freien Parkplatz (8) des parkplatzausforschenden Fahrzeugs (1) mit einem Zeitstempel versehen ist, der zusätzlich zur Übermittlung der Positionsdaten über den freien Parkplatz (8) übermittelt wird, wodurch bei Abfrage durch das parkplatzsuchende Fahrzeug (2) sich die Aktualität der Information über den freien Parkplatz (8) feststellen lässt.Parking guidance system according to claim 1 or 2, characterized in that the information transmission via a free parking space (8) of the parking space exploring vehicle (1) is provided with a time stamp which is transmitted in addition to the transmission of the position data on the free parking space (8), whereby at Query by the parking-looking vehicle (2) can be the timeliness of the information about the free parking lot (8) determine. Parkleitsystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Informationsübertragung an die parkplatzsuchenden Fahrzeuge (2) im Push- oder Pull-Verfahren erfolgt.Parking guidance system according to one of claims 1 to 3, characterized in that the information is transmitted to the parking lot looking vehicles (2) in the push or pull method. Parkleitsystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die zur Ausforschung der freien Parkplätze (8) dienlichen Fahrzeuge (1) mit zumindest einem Sensor (16) zur Parkplatzerkennung ausgestattet sind.Parking guidance system according to one of claims 1 to 4, characterized in that the exploration of the free parking spaces (8) serving vehicles (1) are equipped with at least one sensor (16) for parking space detection. Parkleitsystem nach Anspruch 5, dadurch gekennzeichnet, dass der zumindest eine Sensor (16) auf optischer und/oder nichtoptischer Basis arbeitet.Parking guidance system according to claim 5, characterized in that the at least one sensor (16) operates on an optical and / or non-optical basis. Parkleitsystem nach Anspruch 1, dadurch gekennzeichnet, dass der direkte Informationsaustausch zwischen den zwei Fahrzeugen (1, 2) über eine Luftschnittstelle, wie GSM, UMTS, WLAN oder dergleichen, erfolgt.Parking guidance system according to claim 1, characterized in that the direct exchange of information between the two vehicles (1, 2) via an air interface, such as GSM, UMTS, WLAN or the like, takes place. Parkleitsystem nach einem der vorhergehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Informationen über freie Parkplätze (8) periodisch ermittelt werden.Parking guidance system according to one of the preceding claims 1 to 7, characterized in that the information about free parking spaces (8) are determined periodically. Parkleitsystem nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei den parkplatzausforschenden Fahrzeugen (1) um Fahrzeuge für den öffentlichen Personennahverkehr, insbesondere regelmäßig verkehrende Busse, oder um Taxi-Fahrzeuge oder dergleichen, handelt.Parking guidance system according to claim 1, characterized in that it is in the parking space exploring vehicles (1) to vehicles for public transport, in particular regular buses, or taxi vehicles or the like. Parkleitsystem nach einem der vorhergehenden Ansprüche 1 bis 9, dadurch gekennzeichnet, dass zusätzlich auch ausparkende Fahrzeuge beim oder unmittelbar nach dem Verlassen ihres Parkplatzes selbstständig die Information über den freigemachten Parkplatz (8) an das parkplatzsuchende Fahrzeug (2) oder an die Zentrale (3) zur Weiterleitung an das parkplatzsuchende Fahrzeug (2) übermitteln.Parking guidance system according to one of the preceding claims 1 to 9, characterized in that in addition also ausparkende vehicles during or immediately after leaving their parking lot independently the information about the cleared parking lot (8) to the parking-looking vehicle (2) or to the center (3) for forwarding to the parking-looking vehicle (2) transmit. Detektiereinheit vorgesehen für ein parkplatzausforschendes Fahrzeug (1) als Teil des Parkleitsystems nach Anspruch 1, dadurch gekennzeichnet, dass die Detektiereinheit das Auffinden eines freien Parkplatzes (8) mittels Sensor (16) und Weiterleiten der Information über einen freien Parkplatz (8) an eine Kommunikationseinrichtung (5') eines parkplatzsuchenden Fahrzeugs (2) oder an eine Zentrale (3) bewerkstelligt, wofür die Detektiereinheit ein Navigationssystem (4), eine Kommunikationseinrichtung (5) und eine Verarbeitungseinrichtung (6) umfasst.Detection unit provided for a parking lot-exploring vehicle (1) as part of the parking guidance system according to claim 1, characterized in that the detection unit finding a free parking space (8) by means of sensor (16) and forwarding the information about a free parking lot (8) to a communication device (5 ') of a parking space-seeking vehicle (2) or to a control center (3), for which the detection unit comprises a navigation system (4), a communication device (5) and a processing device (6). Navigationseinheit vorgesehen für ein parkplatzsuchendes Fahrzeug als Teil des Parkleitsystems nach Anspruch 1, dadurch gekennzeichnet, dass die Navigationseinheit die Information über den freien Parkplatz (8) von der Detektiereinheit nach Anspruch 11 eines parkplatzausforschenden Fahrzeugs (1) oder über die Zentrale (3) empfängt, verarbeitet und anschließend den Fahrer zu dem freien Parkplatz (8) navigiert, wofür die Navigationseinheit ein Navigationssystem (4'), eine Kommunikationseinrichtung (5') und eine Verarbeitungseinrichtung (6') umfasst.Navigation unit provided for a parking lot searching vehicle as part of the parking guidance system according to claim 1, characterized in that the navigation unit receives the information about the free parking lot (8) from the detection unit according to claim 11 of a parking lot exploring vehicle (1) or via the center (3), and then navigates the driver to the free parking space (8), for which the navigation unit comprises a navigation system (4 '), a communication device (5') and a processing device (6 ').
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