EP1361488A1 - Method and apparatus for classifying vehicles equipped with wheels - Google Patents

Method and apparatus for classifying vehicles equipped with wheels Download PDF

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Publication number
EP1361488A1
EP1361488A1 EP02010325A EP02010325A EP1361488A1 EP 1361488 A1 EP1361488 A1 EP 1361488A1 EP 02010325 A EP02010325 A EP 02010325A EP 02010325 A EP02010325 A EP 02010325A EP 1361488 A1 EP1361488 A1 EP 1361488A1
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EP
European Patent Office
Prior art keywords
wheels
vehicle
characteristic feature
image
view
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.)
Granted
Application number
EP02010325A
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German (de)
French (fr)
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EP1361488B1 (en
Inventor
Vasil Dipl.-Ing. Silin
Rolf Herzog
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.)
Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH
AGES ARBEITSGEMEINSCHAFT GEBUE
Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH
Original Assignee
Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH
AGES ARBEITSGEMEINSCHAFT GEBUE
Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH
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Application filed by Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH, AGES ARBEITSGEMEINSCHAFT GEBUE, Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH filed Critical Ages Arbeitsgemeinschaft Gebuehrenentrichtungssystem & Co oHG GmbH
Priority to DE50210498T priority Critical patent/DE50210498D1/en
Priority to DK02010325T priority patent/DK1361488T3/en
Priority to AT02010325T priority patent/ATE367601T1/en
Priority to EP02010325A priority patent/EP1361488B1/en
Priority to PCT/EP2003/003513 priority patent/WO2003096300A1/en
Priority to AU2003226781A priority patent/AU2003226781A1/en
Publication of EP1361488A1 publication Critical patent/EP1361488A1/en
Application granted granted Critical
Publication of EP1361488B1 publication Critical patent/EP1361488B1/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/04Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/015Detecting movement of traffic to be counted or controlled with provision for distinguishing between two or more types of vehicles, e.g. between motor-cars and cycles

Definitions

  • the invention relates to a method and a device for automatic classification of with wheels equipped vehicles.
  • the Control of vehicles is particularly complex in that the Tolls to be paid are usually not only from the traveled distance, but also from the load should be made dependent by using the Is caused by the respective vehicle. So heavy trucks, for example, are supposed to be higher Pay fees as easy as the heavier Trucks, for example, have a higher wear Cause lanes than lighter vehicles. Therefore are the road fees to be paid depending on the respective weight of the vehicle in load classes have been classified.
  • the object of the invention was an automatic feasible method for classifying To create vehicles, especially trucks, that with a high degree of reliability and reliable results leads. Likewise, a device should be created with which this procedure can be carried out in a particularly simple manner can be carried out.
  • This task is first accomplished through a process for automatic classification of wheeled vehicles Vehicles solved, one of which is a vehicle side assigned wheels mapping view of each classifying vehicle is recorded, in which at least one characteristic of the wheels of the Vehicle is determined by evaluating the side view and then based on the characteristic feature of Wheels the respective vehicle class is assigned.
  • the captured view can be any type Act act to uniquely determine the location and size of the wheels of the vehicle detected in each case are suitable. So it can be a through a transverse to the direction of travel of the vehicle aligned camera captured image of a long side act of the vehicle. It is also possible at Use of appropriately trained evaluation systems, Use images at a certain angle be recorded. In addition, it can be useful stereoscopic images of the side surface in question use. It is only essential that the location and size of the wheels from the captured view sufficient accuracy can be determined.
  • the characteristic size of the Wheels can be, for example, a diameter, for example the outside diameter, at least one Tire, the diameter of at least one rim, the Difference in the outer diameter of the tire and rim at least one of the wheels or resulting from the number and Distribution of the assigned to each side of the vehicle View visible wheels resulting in number of axes of the Act vehicle.
  • the reliability of the Detection can be increased not only in each case a geometric parameter of the wheels is determined, but that two and more such characteristics determined and when assigning the respective Load class are taken into account. Particularly reliable Results are obtained when the number of Axles of any vehicle with a tire or Wheel rim size of the characteristic parameter be combined.
  • the invention is based on the idea that the tires and Rim size together with the number of axles as characteristic parameters can be used, which stand for the permissible total weight. So can be the particular one in trucks Load class based on easily recognizable geometric Sizes of the vehicle to be classified with high Assign reliability.
  • the clearly defined, in particular in the view distinctive form of vehicle wheels allows even with an automatic Image acquisition and evaluation a clear, distinctive finding of the associated Classifying features.
  • One for carrying out the method according to the invention particularly suitable device is with a Image capture device for capturing the view of the Vehicle and equipped with an evaluation device, which the respective characteristic feature at least one of the wheels of the vehicle by evaluating the from the Image capture device each captured to the Evaluation device determined image and the determined characteristic feature a vehicle class assigns.
  • a device can be easily used conventional imaging devices such as one commercial digital video system, operate, which are available at low cost and are simple to set up and can be transported.
  • the degree of automation of the Further increase the classification process by the image capture device is a device for automatic detection of the approach of a moving located vehicle includes.
  • the invention is based on a Embodiment schematically illustrating drawing explained in more detail.
  • the single figure shows a truck 1, which in a for trucks from a certain permissible Total weight enters toll road 2.
  • the device 3 comprises an image capturing device 4, through a conventional digital working, portable video system that is formed on one here tripod, not shown, is placed on the side of the road.
  • the image capture device 4 is equipped with a Device 4a for recognizing the approach of a Motor vehicle equipped.
  • the image capture device 4 is via a data line 4b with one by a conventional Data processing device formed evaluation device 5 connected.
  • the evaluation device 5 is in one also arranged portable housing 5a.
  • the evaluation device 5 has a memory device equipped in which the result of that of Evaluation device 5 performed evaluation is saved. The evaluated in each case captured views A also for preservation of evidence can be saved. Likewise, the evaluation device 5 about a suitable, not shown here Remote data transmission device with a likewise not Central monitoring point shown, for example a central data acquisition device or one Traffic control center. Any of these Design enables a fully automatic Classification company for which no intervention by a Operator is required.
  • the device 3 can also be part of a Surveillance system, not just the classification of the respective vehicle according to the load class, but also further measures required to identify the vehicle perform as an automatic detection of the Vehicle registration number, automatic detection of identification means etc. carried with the vehicle
  • the device can be equipped with a signal device be connected when a one is detected with respect to a suspect improper payment of fees Vehicle a signal to lead this vehicle out of the gives off road traffic.
  • the truck 1 has three axles A1, A2, A3 for each a pair of wheels, the first axis A1 in the range of Cab 1a and the other two axes A2, A3 as Twin axes closely adjacent in the area of the tail 1b of the Truck 1 are arranged. Accordingly, are on the right in the direction of travel F, visible in the figure Side of the truck 1 three wheels R1, R2, R3 too detect.
  • the evaluation device 5 first uses an appropriate evaluation algorithm to determine the position of the wheels R1, R2, R3 in FIG.
  • the distances m1, m2 of the centers of the wheels R1 and R2 or R1 and R3 corresponding to the distances between the axes A1, A2 and A1, A3 are then determined in order to make a clear statement about the number of axles of the truck 1.
  • the outer diameter D R of the tire and the outer diameter D F of the rim are determined for the wheel R1.
  • the number of axes A1 / A2, A3 and the diameter D R , D F of the tire R1 are then compared as geometric features characterizing the wheels R1, R2, R3 by the evaluation device 5 with data records which are stored in a memory of the evaluation device 5 and indicate which number of axles combined with typical tire and rim diameters is assigned to which load class.
  • This comparison shows the load class LK, which is assigned to the truck.
  • This load class LK is indicated by the display device 6 displayed to, for example, a monitoring person indicate that the truck 1 is a toll vehicle.
  • That supplied by the evaluation device 5 Result for example, an automatic payment or Trigger the posting process, through which an account of the Vehicle owner or driver with the due toll is charged.
  • the automatically performed by the device 3 Classification of the truck 1 can by further Recognition procedures are supplemented with which are not only classify the load class, but also an exact one Establishing the identity of the respective vehicle can be carried out.
  • the advantage of how the Device 3 consists in that it operation according to the invention a safe selection of vehicles passing her according to her permissible Total weight in real time, so that if necessary, additional recognition or Payment methods are based on the actual toll underlying vehicles. can concentrate.

Abstract

The method involves acquiring (4) a view (A) of the wheels (R1-3) associated with one side of the vehicle (1) to be classified, determining at least one characteristic property (m1,m2,DR,DF) of the wheels by evaluating the view and allocating the determined characteristic property to a vehicle class. The determined characteristic property can be the diameter or rim of the tire of at least one wheel. AN Independent claim is also included for the following: (a) an arrangement for implementing the inventive method.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum automatischen Klassifizieren von mit Rädern ausgestatteten Fahrzeugen.The invention relates to a method and a device for automatic classification of with wheels equipped vehicles.

Die immer stärker werdende Belastung des Staßennetzes durch Lastkraftwagen und die damit verbundenen Kosten der Instandhaltung insbesondere von Autobahnen und Schnellstraßen haben dazu geführt, dass die Benutzung der betreffenden Straßen mit einer Maut belegt wird. Üblicherweise wird diese Maut beim Einfahren in die betreffende Straße an einer im Bereich der Einmündung angeordneten Mautstelle entrichtet. Dazu muss das jeweilige Fahrzeug anhalten oder zumindest so langsam fahren, dass die Bezahlung der Maut einwandfrei abgewickelt und der Zugang zu der mautpflichtigen Straße freigegeben werden kann.The ever increasing burden on the road network Trucks and the associated costs of Maintenance especially of highways and Expressways have resulted in the use of the toll roads are concerned. This toll is usually charged when entering the Road in question in the area of the confluence ordered toll station paid. To do this, the respective Stop the vehicle or at least drive so slowly that the payment of the toll was processed properly and the Access to the toll road will be released can.

Auf die bekannte Weise lässt sich zwar eine exakte Kontrolle der Entrichtung der Maut und des Zugangs zu dem mautpflichtigen Wegenetz bewerkstelligen. Allerdings führen der Zahlvorgang und die erst bei erfolgter Zahlung erfolgende Freigabe des Zugangs zu einer deutlichen Verzögerung des Verkehrsflusses. So kann es insbesondere bei hohem Verkehrsaufkommen zur Bildung größerer Fahrzeugstaus vor den Mautstellen kommen. An exact can be done in the known manner Control of toll payment and access to it manage toll road network. However, lead the payment process and only after payment has been made clearing access to a clear Delay in traffic flow. In particular, it can with high traffic to form larger ones There are traffic jams in front of the toll booths.

Es besteht daher aus verkehrsplanerischer Sicht die Anforderung, die Entrichtung der Maut so durchzuführen, dass der Verkehrsfluss weitestgehend ungestört bleibt. Diese Anforderung kann dadurch erfüllt werden, dass den Fahrzeugführern bzw. -haltern die Gelegenheit einer vorab erfolgenden pauschalen Entrichtung einer Straßenbenutzungsgebühr eingeräumt wird. Ebenso ist es denkbar, die Benutzung einer Fahrtstrecke nachträglich in Rechnung zu stellen.From a traffic planning perspective, there is therefore the Requirement to pay the toll in such a way that the flow of traffic remains largely undisturbed. This requirement can be met by the Drivers or owners of the opportunity in advance flat-rate payment of a Road user fee is granted. It is the same conceivable, the use of a route later To invoice.

Unabhängig davon, ob die Entrichtung der Benutzungsgebühr im Voraus erfolgt oder nachträglich abgerechnet wird, ist eine wirkungsvolle Kontrolle der Straßenbenutzung erforderlich. Erschwert wird diese Kontrolle einerseits durch die Vielfalt der Fahrzeugtypen. Andererseits wird die Kontrolle der Fahrzeuge dadurch besonders komplex, dass die zu entrichtende Maut in der Regel nicht nur von der zurückgelegten Strecke, sondern auch von der Belastung abhängig gemacht werden soll, die durch die Benutzung des Fahrwegs durch das jeweilige Fahrzeug verursacht wird. So sollen beispielsweise schwere Lastkraftfahrzeuge höhere Gebühren entrichten als leichte, da die schwereren Lastkraftwagen beispielsweise einen höheren Verschleiß der Fahrbahnen verursachen als leichtere Fahrzeuge. Daher sind die zu entrichtenden Straßengebühren in Abhängigkeit vom jeweiligen Gewicht des Fahrzeugs in Lastklassen klassifiziert worden.Regardless of whether the payment of the user fee done in advance or billed subsequently effective control of road use required. On the one hand, this control is made more difficult through the variety of vehicle types. On the other hand, the Control of vehicles is particularly complex in that the Tolls to be paid are usually not only from the traveled distance, but also from the load should be made dependent by using the Is caused by the respective vehicle. So heavy trucks, for example, are supposed to be higher Pay fees as easy as the heavier Trucks, for example, have a higher wear Cause lanes than lighter vehicles. Therefore are the road fees to be paid depending on the respective weight of the vehicle in load classes have been classified.

Es ist vorgeschlagen worden, eine automatische Erkennung der jeweiligen Lastklasse eines Fahrzeugs durch eine automatisierte Erfassung seiner geometrischen Maße, wie Gesamtbreite, Gesamthöhe, Gesamtlänge etc., durchzuführen. Nachteilig an diesem Vorgehen ist jedoch, dass die Ergebnisse einer automatisch erfolgenden Bildauswertung stark durch die von dem Fahrzeug jeweils transportierten Lasten oder andere Aufbauten beeinflusst werden, die zwar nicht zu einer nennenswerten Änderung des Gewichts des jeweiligen Fahrzeugs selbst führen, sein Erscheinungsbild gegenüber dem Standardtyp des jeweiligen Fahrzeugs jedoch deutlich verändern. Aufgrund dieser Einflüsse lässt sich eine zuverlässig automatisierte Erkennung von durch ihre äußere Erscheinung gekennzeichneten Fahrzeugen nicht mit der erforderlichen Sicherheit bewerkstelligen.Automatic detection has been proposed the respective load class of a vehicle by a automated capture of its geometric dimensions, such as Overall width, overall height, overall length, etc. However, a disadvantage of this procedure is that the Results of an automatic image evaluation heavily by those transported by the vehicle Loads or other structures that are affected not a significant change in the weight of the each vehicle itself, its appearance compared to the standard type of the respective vehicle, however change significantly. Because of these influences, a reliable automated detection of by your vehicles marked with an external appearance achieve the required security.

Es ist versucht worden, die bei einer bildgestützten Erfassung und Klassifizierung von Fahrzeugen bestehenden Probleme dadurch zu umgehen, dass anstelle geometrischer Kenngrößen magnetische Charakteristika der Fahrzeuge erfasst werden. Dazu werden Magnetfeldsensoren in der Straßendecke angeordnet, welche die in Abhängigkeit von der Masse an magnetisierbarem Material des Fahrzeugs eintretende Änderung eines elektromagnetischen Feldes erfassen und einer bestimmten Gewichtsklasse zuordnen. Auf diese Weise lässt sich zwar die Treffsicherheit bei der gewichtsabhängigen Klassifizierung des jeweils erfassten Fahrzeugs erhöhen. Nachteilig ist jedoch, dass die bekannten Magnetfeldsensoren fest in der Straßendecke angeordnet sein müssen und dazu umfangreiche bauliche Maßnahmen an der jeweils überwachten Straße erforderlich sind, die zu einer Behinderung des laufenden Verkehrs und erheblichen Kosten führen.It has been attempted at an image-based Registration and classification of existing vehicles Work around problems by using geometric instead Magnetic characteristics of vehicles be recorded. For this purpose, magnetic field sensors in the Street surface arranged which the depending on the Mass of magnetizable material of the vehicle occurring change of an electromagnetic field record and assign to a certain weight class. On in this way, the marksmanship at weight-dependent classification of the recorded Increase vehicle. The disadvantage, however, is that the known magnetic field sensors firmly in the road surface must be arranged and extensive structural Measures required on the monitored street are that lead to a hindrance to ongoing traffic and lead to considerable costs.

Die Aufgabe der Erfindung bestand darin, ein automatisch durchführbares Verfahren zur Klassifizierung von Fahrzeugen, insbesondere Lastkraftwagen, zu schaffen, das mit einer hohen Sicherheit zu verlässlichen Ergebnissen führt. Ebenso sollte eine Vorrichtung geschaffen werden, mit der sich dieses Verfahren in besonders einfacher Weise durchführen lässt.The object of the invention was an automatic feasible method for classifying To create vehicles, especially trucks, that with a high degree of reliability and reliable results leads. Likewise, a device should be created with which this procedure can be carried out in a particularly simple manner can be carried out.

Diese Aufgabe wird zuerst durch ein Verfahren zum automatischen Klassifizieren von mit Rädern ausgestatteten Fahrzeugen gelöst, bei dem eine die einer Fahrzeugseite zugeordneten Räder abbildende Ansicht des jeweils zu klassifizierenden Fahrzeugs erfasst wird, bei dem mindestens ein charakteristisches Merkmal der Räder des Fahrzeugs durch Auswerten der Seitenansicht ermittelt wird und bei dem dann anhand des charakteristischen Merkmals der Räder die jeweilige Fahrzeugklasse zugeordnet wird.This task is first accomplished through a process for automatic classification of wheeled vehicles Vehicles solved, one of which is a vehicle side assigned wheels mapping view of each classifying vehicle is recorded, in which at least one characteristic of the wheels of the Vehicle is determined by evaluating the side view and then based on the characteristic feature of Wheels the respective vehicle class is assigned.

Bei der erfassten Ansicht kann es sich um jede Art Abbildung handeln, die zum eindeutigen Bestimmen der Lage und Größe der Räder des jeweils detektierten Fahrzeugs geeignet sind. So kann es sich bei der Aufnahme um eine durch eine quer zur Fahrtrichtung des Fahrzeugs ausgerichtete Kamera erfasste Abbildung einer Längsseite des Fahrzeugs handeln. Ebenso ist es möglich, bei Verwendung entsprechend ausgebildeter Auswertesysteme, Abbildungen zu verwenden, die unter einem bestimmten Winkel erfaßt werden. Darüber hinaus kann es zweckmäßig sein, stereoskopische Aufnahmen der betreffenden Seitenfläche zu verwenden. Wesentlich ist jeweils lediglich, dass die Lage und Größe der Räder aus der erfassten Ansicht mit ausreichender Genauigkeit bestimmt werden kann.The captured view can be any type Act act to uniquely determine the location and size of the wheels of the vehicle detected in each case are suitable. So it can be a through a transverse to the direction of travel of the vehicle aligned camera captured image of a long side act of the vehicle. It is also possible at Use of appropriately trained evaluation systems, Use images at a certain angle be recorded. In addition, it can be useful stereoscopic images of the side surface in question use. It is only essential that the location and size of the wheels from the captured view sufficient accuracy can be determined.

Bei der jeweils ermittelten charakteristischen Größe der Räder kann es sich beispielsweise um einen Durchmesser, beispielsweise den Außendurchmesser, mindestens eines Reifens, den Durchmesser mindestens einer Felge, die Differenz des Außendurchmessers von Reifen und Felge mindestens eines der Räder oder die sich aus der Zahl und Verteilung der jeder Fahrzeugseite zugeordneten, auf der Ansicht sichtbaren Räder ergebenden Anzahl der Achsen des Fahrzeugs handeln. Dabei kann die Zuverlässigkeit der Erkennung dadurch gesteigert werden, dass nicht nur jeweils eine geometrische Kenngröße der Räder ermittelt wird, sondern dass zwei und mehr solcher Charakteristika festgestellt und bei der Zuordnung der jeweiligen Lastklasse berücksichtigt werden. Besonders zuverlässige Ergebnisse ergeben sich dabei dann, wenn die Anzahl der Achsen jedes Fahrzeugs mit einer die Reifen- oder Felgengröße der Räder charakterisierenden Kenngröße kombiniert werden.Given the characteristic size of the Wheels can be, for example, a diameter, for example the outside diameter, at least one Tire, the diameter of at least one rim, the Difference in the outer diameter of the tire and rim at least one of the wheels or resulting from the number and Distribution of the assigned to each side of the vehicle View visible wheels resulting in number of axes of the Act vehicle. The reliability of the Detection can be increased not only in each case a geometric parameter of the wheels is determined, but that two and more such characteristics determined and when assigning the respective Load class are taken into account. Particularly reliable Results are obtained when the number of Axles of any vehicle with a tire or Wheel rim size of the characteristic parameter be combined.

Die Erfindung geht von dem Gedanken aus, dass die Reifenund Felgengröße zusammen mit der -Achszahl als charakteristische Kenngrößen herangezogen werden können, die für das jeweils zulässige Gesamtgewicht stehen. So lässt sich insbesondere bei Lastkraftwagen die jeweilige Lastklasse anhand von einfach erkennbaren geometrischen Größen des jeweils zu klassifizierenden Fahrzeugs mit hoher Zuverlässigkeit zuordnen. Die klar definierte, insbesondere in der Ansicht unverwechselbare Form von Fahrzeugrädern erlaubt dabei auch bei einer automatisch erfolgenden Bilderfassung und -auswertung eine eindeutige, unverwechselbare Feststellung der die zugeordnete Klassifizierung ergebenden Merkmale.The invention is based on the idea that the tires and Rim size together with the number of axles as characteristic parameters can be used, which stand for the permissible total weight. So can be the particular one in trucks Load class based on easily recognizable geometric Sizes of the vehicle to be classified with high Assign reliability. The clearly defined, in particular in the view distinctive form of vehicle wheels allows even with an automatic Image acquisition and evaluation a clear, distinctive finding of the associated Classifying features.

Versuche haben gezeigt, dass durch die Einbindung der Erfassung von Reifen- und Felgengröße die Zahl der jeweils richtig klassifizierten Lastkraftwagen deutlich erhöht werden konnte. Während die bekannten Verfahren jeweils nur Erkennungsquoten im Bereich von 70 % lieferten, stellen Fehlerkennungen und -klassifizierungen bei dem erfindungsgemäßen Verfahren die Ausnahme dar. Daher eignet sich die erfindungsgemäße Vorgehensweise beispielsweise zur zuverlässigen automatischen Unterscheidung von mautpflichtigen und mautfreien Fahrzeugen bei der Einfahrt in Straßen, die für Fahrzeuge mit einem ein bestimmtes Gewicht überschreitenden zulässigen Gesamtgewicht mautpflichtig sind.Tests have shown that by integrating the Detection of tire and rim size the number of each correctly classified trucks increased significantly could be. While the known methods only Detection rates in the range of 70% provided, set Error detection and classification in the The method according to the invention is the exception. Therefore suitable the procedure according to the invention, for example for the reliable automatic differentiation of toll and toll-free vehicles at the entrance in roads designed for vehicles with a particular Permissible total weight exceeding the weight are subject to tolls.

Dabei kann es günstig sein, die gemäß der Erfindung durchgeführte Erkennung von charakteristischen Merkmalen der Räder selbst bzw. ihrer geometrischen Anordnung am Fahrzeug mit einer konventionellen Erfassung der die gesamte Form des Fahrzeugs kennzeichnenden Merkmalen, wie Gesamtbreite, -höhe etc., zu kombinieren, um die Genauigkeit der Klassifizierung weiter zu steigern.It may be convenient according to the invention carried out recognition of characteristic features the wheels themselves or their geometric arrangement on Vehicle with a conventional detection of the overall shape of the vehicle distinguishing features, such as Total width, height, etc. to combine to make the To further increase the accuracy of the classification.

Eine für die Durchführung des erfindungsgemäßen Verfahrens besonders geeignete Vorrichtung ist mit einer Bilderfassungseinrichtung zum Erfassen der Ansicht des Fahrzeugs und mit einer Auswerteinrichtung ausgestattet, die das jeweilige charakteristische Merkmal mindestens eines der Räder des Fahrzeugs durch Auswerten des von der Bilderfassungseinrichtung jeweils erfassten, an die Auswerteinrichtung gelieferten Bildes ermittelt und des ermittelten charakteristischen Merkmals eine Fahrzeugklasse zuordnet. Eine solche Vorrichtung lässt sich problemlos mit konventionellen Bilderfassungseinrichtungen, wie einem handelsüblichen portablen digitalem Videosystem, betreiben, die kostengünstig erhältlich sind und einfach aufgebaut und transportiert werden können.One for carrying out the method according to the invention particularly suitable device is with a Image capture device for capturing the view of the Vehicle and equipped with an evaluation device, which the respective characteristic feature at least one of the wheels of the vehicle by evaluating the from the Image capture device each captured to the Evaluation device determined image and the determined characteristic feature a vehicle class assigns. Such a device can be easily used conventional imaging devices such as one commercial digital video system, operate, which are available at low cost and are simple to set up and can be transported.

Dabei lässt sich der Grad der Automatisierung des Klassifizierungsvorgangs dadurch weiter steigern, dass die Bilderfassungseinrichtung eine Einrichtung zum automatischen Erkennen des Herannahens eines in Bewegung befindlichen Fahrzeugs umfasst.The degree of automation of the Further increase the classification process by the image capture device is a device for automatic detection of the approach of a moving located vehicle includes.

Nachfolgend wird die Erfindung anhand einer ein Ausführungsbeispiel schematisch darstellenden Zeichnung näher erläutert.The invention is based on a Embodiment schematically illustrating drawing explained in more detail.

Die einzige Figur zeigt einen Lastkraftwagen 1, der in eine für Lastkraftwagen ab einem bestimmten zulässigen Gesamtgewicht mautpflichtigen Straße 2 einfährt. Im Bereich der Einfahrt ist eine Vorrichtung 3 zum automatischen Feststellen der Gewichtsklasse der in die Straße 2 einbiegenden Lastkraftwagen angeordnet.The single figure shows a truck 1, which in a for trucks from a certain permissible Total weight enters toll road 2. In the area the entrance is a device 3 for automatic Determine the weight class in the street 2 bending trucks arranged.

Die Vorrichtung 3 umfasst eine Bilderfassungseinrichtung 4, die durch ein konventionelles digital arbeitendes, portables Videosystem gebildet ist, dass auf einem hier nicht gezeigten Stativ am Straßenrand aufgestellt ist. Zusätzlich ist die Bilderfassungseinrichtung 4 mit einer Einrichtung 4a zum Erkennen des Herannahens eines Kraftfahrzeugs ausgestattet.The device 3 comprises an image capturing device 4, through a conventional digital working, portable video system that is formed on one here tripod, not shown, is placed on the side of the road. In addition, the image capture device 4 is equipped with a Device 4a for recognizing the approach of a Motor vehicle equipped.

Die Bilderfassungseinrichtung 4 ist über eine Datenleitung 4b mit einer durch eine konventionelle Datenverarbeitungseinrichtung gebildeten Auswerteinrichtung 5 verbunden. Die Auswerteinrichtung 5 ist in einem ebenfalls transportablen Gehäuse 5a angeordnet.The image capture device 4 is via a data line 4b with one by a conventional Data processing device formed evaluation device 5 connected. The evaluation device 5 is in one also arranged portable housing 5a.

Soll eine Kontrolle vor Ort durchgeführt werden, so kann in dem Gehäuse 5a darüber hinaus eine an die Auswerteinrichtung 5 angeschlossene Anzeigeeinrichtung 6 in Form eines konventionellen Bildschirms untergebracht sein. If a check is to be carried out on site, in the housing 5a also one to the Evaluation device 5 connected display device 6 in Form of a conventional screen.

Die Auswerteinrichtung 5 ist mit einer Speichereinrichtung ausgestattet, in der das Ergebnis der von der Auswerteinrichtung 5 durchgeführten Auswertung abgespeichert wird. Dabei können die jeweils ausgewerteten erfassten Ansichten A zur Beweissicherung ebenfalls abgespeichert werden. Ebenso kann die Auswerteinrichtung 5 über eine geeignete, hier nicht dargestellte Datenfernübertragungseinrichtung mit einer ebenfalls nicht gezeigten zentralen Überwachungsstelle, beispielsweise einer zentralen Datenerfassungseinrichtung oder einer Verkehrsleitstelle, verbunden sein. Jede dieser Ausgestaltungen ermöglicht einen vollautomatischen Klassifizierungsbetrieb, für den kein Eingriff durch eine Bedienungsperson erforderlich ist.The evaluation device 5 has a memory device equipped in which the result of that of Evaluation device 5 performed evaluation is saved. The evaluated in each case captured views A also for preservation of evidence can be saved. Likewise, the evaluation device 5 about a suitable, not shown here Remote data transmission device with a likewise not Central monitoring point shown, for example a central data acquisition device or one Traffic control center. Any of these Design enables a fully automatic Classification company for which no intervention by a Operator is required.

Die Vorrichtung 3 kann ebenso Teil eines Überwachungssystems sein, das nicht nur die Klassifizierung des jeweiligen Fahrzeuges nach der Lastklasse, sondern auch weitere zur Erkennung des Fahrzeugs erforderliche Maßnahmen durchführen, wie eine automatische Erkennung des Fahrzeugkennzeichens, eine automatische Erkennung von von dem Fahrzeug mitgeführten Identifikationsmitteln etc.The device 3 can also be part of a Surveillance system, not just the classification of the respective vehicle according to the load class, but also further measures required to identify the vehicle perform as an automatic detection of the Vehicle registration number, automatic detection of identification means etc. carried with the vehicle

Zudem kann die Vorrichtung mit einer Signaleinrichtung verbunden sein, die bei Erfassung eines hinsichtlich einer nicht ordnungsgemäßen Entrichtung von Gebühren verdächtigen Fahrzeugs ein Signal zum Ausleiten dieses Fahrzeugs aus dem laufenden Straßenverkehr abgibt.In addition, the device can be equipped with a signal device be connected when a one is detected with respect to a suspect improper payment of fees Vehicle a signal to lead this vehicle out of the gives off road traffic.

Der Lastkraftwagen 1 weist drei Achsen A1,A2,A3 für jeweils ein Räderpaar auf, wobei die erste Achse A1 im Bereich des Führerhauses 1a und die beiden anderen Achsen A2,A3 als Zwillingsachsen eng benachbart im Bereich des Hecks 1b des Lastkraftwagens 1 angeordnet sind. Dementsprechend sind auf der in Fahrtrichtung F rechten, in der Figur sichtbaren Seite des Lastkraftwagens 1 drei Räder R1,R2,R3 zu erkennen.The truck 1 has three axles A1, A2, A3 for each a pair of wheels, the first axis A1 in the range of Cab 1a and the other two axes A2, A3 as Twin axes closely adjacent in the area of the tail 1b of the Truck 1 are arranged. Accordingly, are on the right in the direction of travel F, visible in the figure Side of the truck 1 three wheels R1, R2, R3 too detect.

Stellt die Einrichtung 4a das Herannahen des Lastkraftwagens 1 fest, so macht die Bilderfassungseinrichtung 4 eine Aufnahme A der in Fahrtrichtung F für sie sichtbaren Seitenansicht des Lastkraftwagens 1. Diese Abbildung A der Seitenansicht des Lastkraftwagens 1 wird als digitaler Datensatz über die Datenleitung 4b an die Auswerteinrichtung 5 geliefert.Is the device 4a approaching the Truck 1 fixed, so does that Image capture device 4 a picture A in Direction of travel F for you visible side view of the Truck 1. This Figure A is the side view of the Truck 1 is a digital record of the Data line 4b delivered to the evaluation device 5.

Die Auswerteinrichtung 5 stellt durch Anwendung eines geeigneten Auswertalgorithmus zunächst die Lage der Räder R1,R2,R3 in der Abbildung A fest. Anschließend werden die den Abständen der Achsen A1,A2 und A1,A3 entsprechenden Abstände m1,m2 der Mittelpunkte der Räder R1 und R2 bzw. R1 und R3 ermittelt, um eine eindeutige Aussage über die Anzahl der Achsen des Lastkraftwagens 1 zu treffen. Zusätzlich werden für das Rad R1 der Außendurchmesser DR des Reifens und der Außendurchmesser DF der Felge festgestellt.The evaluation device 5 first uses an appropriate evaluation algorithm to determine the position of the wheels R1, R2, R3 in FIG. The distances m1, m2 of the centers of the wheels R1 and R2 or R1 and R3 corresponding to the distances between the axes A1, A2 and A1, A3 are then determined in order to make a clear statement about the number of axles of the truck 1. In addition, the outer diameter D R of the tire and the outer diameter D F of the rim are determined for the wheel R1.

Die Anzahl der Achsen A1/A2,A3 sowie die Durchmesser DR,DF des Reifens R1 werden als die Räder R1,R2,R3 charakterisierende geometrische Merkmale dann von der Auswerteinrichtung 5 mit Datensätzen verglichen, die in einem Speicher der Auswerteinrichtung 5 abgelegt sind und angeben, welchen mit typischen Reifen- und Felgendurchmessern kombinierten Achszahlen welche Lastklasse zugeordnet ist. Dieser Vergleich ergibt die Lastklasse LK, die dem Lastkraftwagen zugeordnet ist. The number of axes A1 / A2, A3 and the diameter D R , D F of the tire R1 are then compared as geometric features characterizing the wheels R1, R2, R3 by the evaluation device 5 with data records which are stored in a memory of the evaluation device 5 and indicate which number of axles combined with typical tire and rim diameters is assigned to which load class. This comparison shows the load class LK, which is assigned to the truck.

Diese Lastklasse LK wird von der Anzeigeeinrichtung 6 angezeigt, um beispielsweise einer Überwachungsperson anzuzeigen, dass es sich bei dem Lastkraftwagen 1 um ein mautpflichtiges Fahrzeug handelt.This load class LK is indicated by the display device 6 displayed to, for example, a monitoring person indicate that the truck 1 is a toll vehicle.

Zusätzlich kann das von der Auswerteinrichtung 5 gelieferte Ergebnis beispielsweise einen automatischen Zahlungs- oder Verbuchungsvorgang auslösen, durch den ein Konto des Fahrzeughalters oder -führers mit der fälligen Maut belastet wird.In addition, that supplied by the evaluation device 5 Result, for example, an automatic payment or Trigger the posting process, through which an account of the Vehicle owner or driver with the due toll is charged.

Die von der Vorrichtung 3 automatisch vorgenommene Klassifizierung des Lastkraftwagens 1 kann durch weitere Erkennungsverfahren ergänzt werden, mit denen sich nicht nur die Lastklasse einstufen, sondern auch eine exakte Feststellung der Identität des jeweiligen Fahrzeugs durchführen lässt. Der Vorteil der Funktionsweise der Vorrichtung 3 besteht dabei darin, dass sie bei erfindungsgemäßer Betriebsweise eine sichere Selektion der an ihr vorbei fahrenden Fahrzeuge nach ihrem zulässigen Gesamtgewicht in Echtzeit ermöglicht, so dass die gegebenenfalls ergänzend durchgeführten Erkennungs- oder Zahlungsverfahren sich auf die der Mautpflicht tatsächlich unterliegenden Fahrzeuge. konzentrieren können. The automatically performed by the device 3 Classification of the truck 1 can by further Recognition procedures are supplemented with which are not only classify the load class, but also an exact one Establishing the identity of the respective vehicle can be carried out. The advantage of how the Device 3 consists in that it operation according to the invention a safe selection of vehicles passing her according to her permissible Total weight in real time, so that if necessary, additional recognition or Payment methods are based on the actual toll underlying vehicles. can concentrate.

BEZUGSZEICHENREFERENCE NUMBERS

11
LastkraftwagenLorry
1a1a
Führerhaus des Lastkraftwagens 1Truck cab 1
1b1b
Heck des Lastkraftwagens 1Rear of the truck 1
22
mautpflichtige Straßetoll road
33
Vorrichtung zum automatischen Feststellen der Gewichtsklasse der in die Straße 2 einbiegenden LastkraftwagenDevice for automatic detection of the Weight class of the turning into street 2 Lorry
44
BilderfassungseinrichtungImage capture device
4a4a
Einrichtung zum Erkennen des Herannahens eines KraftfahrzeugsDevice for recognizing the approach of a motor vehicle
4b4b
Datenleitungdata line
55
Auswerteinrichtungevaluation
5a5a
transportables Gehäuse der Auswerteinrichtung 5Transportable housing of the evaluation device 5
66
Anzeigeeinrichtungdisplay
AA
Aufnahme der sichtbaren Seitenansicht des Lastkraftwagens 1Image of the visible side view of the Truck 1
A1,A2,A3A1, A2, A3
Achsen des Lastkraftwagens 1Truck axles 1
DR D R
Außendurchmesser des Reifens des Rades R1Outside diameter of the tire of the R1 wheel
DF D F
Außendurchmesser der Felge des Rades R1Outside diameter of the rim of the R1 wheel
FF
Fahrtrichtungdirection of travel
LKLK
Lastklasseload class
m1,m2m1, m2
Abstände der Achsen der Räder R1,R2 bzw. R1,R3Distance between the axles of the wheels R1, R2 or R1, R3
R1,R2,R3R1, R2, R3
Räder des Lastkraftwagens 1Wheels of the truck 1

Claims (15)

Verfahren zum automatischen Klassifizieren von mit Rädern (R1,R2,R3) ausgestatteten Fahrzeugen (1) umfassend folgende Schritte: Erfassen einer die einer Fahrzeugseite zugeordneten Räder (R1,R2,R3) abbildenden Ansicht (A) des jeweils zu klassifizierenden Fahrzeugs (1), Ermitteln mindestens eines charakteristischen Merkmals der Räder (R1,R2,R3) durch Auswerten der Ansicht (1), und Zuordnen des ermittelten charakteristischen Merkmals (m1,m2,DR,DF) der Räder (R1,R2,R3) zu einer Fahrzeugklasse (LK). Method for automatically classifying vehicles (1) equipped with wheels (R1, R2, R3), comprising the following steps: Detecting a view (A) of the vehicle (1) to be classified that maps the wheels (R1, R2, R3) assigned to a vehicle side, Determining at least one characteristic feature of the wheels (R1, R2, R3) by evaluating the view (1), and Allocating the determined characteristic feature (m1, m2, D R , D F ) of the wheels (R1, R2, R3) to a vehicle class (LK). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als charakteristisches Merkmal der Räder (R1,R2,R3) ein Durchmesser (DR) des Reifens mindestens eines der Räder (R1) ermittelt wird.Method according to Claim 1, characterized in that a diameter (D R ) of the tire of at least one of the wheels (R1) is determined as the characteristic feature of the wheels (R1, R2, R3). Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass als charakteristisches Merkmal der Räder (R1,R2,R3) der Durchmesser (DF) der Felge mindestens eines der Räder (R ermittelt wird. Method according to one of the preceding claims, characterized in that the characteristic feature of the wheels (R1, R2, R3) is the diameter (D F ) of the rim of at least one of the wheels (R). Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass als charakteristisches Merkmal der Räder (R1,R2,R3) die Differenz des Außendurchmessers (DR,DF) von Reifen und Felge mindestens eines der Räder (R1) ermittelt wird.Method according to one of the preceding claims, characterized in that the difference in the outer diameter (D R , D F ) of the tire and rim of at least one of the wheels (R1) is determined as a characteristic feature of the wheels (R1, R2, R3). Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass als charakteristisches Merkmal der Räder (R1,R2,R3) die Anzahl der Achsen (A1,A2,A3) des Fahrzeugs ermittelt wird.Method according to one of the preceding claims, characterized in that the number of axles (A1, A2, A3) of the vehicle is determined as a characteristic feature of the wheels (R1, R2, R3). Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Ansicht (A) mittels einer digitalen Bilderfassungseinrichtung (4) erfasst wird.Method according to one of the preceding claims, characterized in that the view (A) is captured by means of a digital image capturing device (4). Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Bilderfassungseinrichtung mindestens zwei Kameras umfasst.A method according to claim 6, characterized in that the image capture device comprises at least two cameras. Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Arbeitsschritt der Erfassung der Ansicht (A) das selbsttätige Erkennen des Herannahens eines Fahrzeugs (1) umfasst.Method according to one of the preceding claims, characterized in that the step of acquiring the view (A) comprises automatically recognizing the approach of a vehicle (1). Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass es sich bei den Fahrzeugen um Lastkraftwagen (1) handelt.Method according to one of the preceding claims, characterized in that the vehicles are trucks (1). Vorrichtung zur Durchführung des gemäß einem der Ansprüche 1 bis 9 ausgebildeten Verfahrens zum Klassifizieren von Kraftfahrzeugen (1) mit einer Bilderfassungseinrichtung (4) zum Erfassen eines Bildes (A) der Ansicht des Fahrzeugs (1), mit einer Auswerteinrichtung (5) zum Ermitteln des charakteristischen Merkmals mindestens eines der Räder (R1,R2,R3) des Fahrzeugs (1) durch Auswerten des von der Bilderfassungseinrichtung (4) jeweils erfassten, an die Auswerteinrichtung (5) gelieferten Bildes (A) und zum Zuordnen des ermittelten charakteristischen Merkmals zu einer Fahrzeugklasse (LK). Device for carrying out the method for classifying motor vehicles (1) designed according to one of claims 1 to 9 with an image capturing device (4) for capturing an image (A) of the view of the vehicle (1), With an evaluation device (5) for determining the characteristic feature of at least one of the wheels (R1, R2, R3) of the vehicle (1) by evaluating the image (A) supplied to the evaluation device (5), which image is captured by the image recording device (4). and for assigning the determined characteristic feature to a vehicle class (LK). Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Bilderfassungseinrichtung (4) eine Einrichtung (4a) zum automatischen Erkennen des Herannahens eines in Bewegung befindlichen Fahrzeugs (1) umfasst.Apparatus according to claim 10, characterized in that the image capturing device (4) comprises a device (4a) for automatically detecting the approach of a vehicle (1) which is in motion. Vorrichtung nach einem der Ansprüche 10 oder 11, dadurch gekennzeichnet, dass sie eine Anzeigeeinrichtung (6) zum Ausgeben der dem jeweils erfassten Fahrzeug (1) zugeordneten Fahrzeugklasse (LK) umfasst. Device according to one of claims 10 or 11, characterized in that it comprises a display device (6) for outputting the vehicle class (LK) assigned to the respectively detected vehicle (1). Vorrichtung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass sie tragbar ist.Device according to one of claims 10 to 12, characterized in that it is portable. Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Bilderfassungseinrichtung (4) mindestens zwei Kameras umfasst.Device according to one of claims 10 to 13, characterized in that the image capture device (4) comprises at least two cameras. Vorrichtung nach einem der Ansprüche 10 bis 14, dadurch gekennzeichnet, dass die Auswerteinrichtung (5) und die Bilderfassungseinrichtung (4) eine Baueinheit bilden.Device according to one of claims 10 to 14, characterized in that the evaluation device (5) and the image capture device (4) form a structural unit.
EP02010325A 2002-05-07 2002-05-07 Method and apparatus for classifying vehicles equipped with wheels Expired - Lifetime EP1361488B1 (en)

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DE50210498T DE50210498D1 (en) 2002-05-07 2002-05-07 Method and apparatus for automatically classifying wheeled vehicles
DK02010325T DK1361488T3 (en) 2002-05-07 2002-05-07 Method and apparatus for automatic classification of vehicles equipped with wheels
AT02010325T ATE367601T1 (en) 2002-05-07 2002-05-07 METHOD AND DEVICE FOR AUTOMATICALLY CLASSIFYING WHEELED VEHICLES
EP02010325A EP1361488B1 (en) 2002-05-07 2002-05-07 Method and apparatus for classifying vehicles equipped with wheels
PCT/EP2003/003513 WO2003096300A1 (en) 2002-05-07 2003-04-04 Method and device for the automatic classification of wheeled vehicles
AU2003226781A AU2003226781A1 (en) 2002-05-07 2003-04-04 Method and device for the automatic classification of wheeled vehicles

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AU2003226781A1 (en) 2003-11-11
DE50210498D1 (en) 2007-08-30

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