WO2002003027A1 - Geometrical wheel data, geometrical axle data and bodywork displacement data comprising wheel markers configured at the production stage - Google Patents

Geometrical wheel data, geometrical axle data and bodywork displacement data comprising wheel markers configured at the production stage Download PDF

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Publication number
WO2002003027A1
WO2002003027A1 PCT/DE2001/002295 DE0102295W WO0203027A1 WO 2002003027 A1 WO2002003027 A1 WO 2002003027A1 DE 0102295 W DE0102295 W DE 0102295W WO 0203027 A1 WO0203027 A1 WO 0203027A1
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WIPO (PCT)
Prior art keywords
wheel
data
marks
determined
camera arrangement
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PCT/DE2001/002295
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German (de)
French (fr)
Inventor
Artur Dannenmann
Dietrich Adolph
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Robert Bosch Gmbh
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Publication of WO2002003027A1 publication Critical patent/WO2002003027A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/275—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/14—One or more cameras or other optical devices capable of acquiring a two-dimensional image
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/16—Active or passive device attached to the chassis of a vehicle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/30—Reference markings, reflector, scale or other passive device

Definitions

  • WHEEL GEOMETRY DATA AXLE GEOMETRY DATA
  • BODY MOVEMENT DATA WITH ALREADY MANUFACTURED WHEEL BRANDS
  • the invention relates to a device for determining wheel, axle geometry and / or movement data of the body of a motor vehicle relative to the wheel having the rim and tire, with a camera arrangement with which distinguishable wheel marks that are present at least on the wheel can be detected, and with an evaluation device downstream of the camera arrangement.
  • a device of this type is shown in DE 197 57 760 A1.
  • a camera arrangement is provided on the test station, with which, from at least two different perspectives, a marking device from a reference feature arrangement fixed to the test station, at least one Body feature and at least one wheel feature for determining the wheel and / or axle geometry of motor vehicles is detected while driving past the camera arrangement.
  • the wheel turning plane can be precisely determined and a rim runout can be determined.
  • the driving axis the single track for each wheel, the total track for each wheel pair, the camber for each wheel, a wheel offset front / rear, side offset right / left, track width difference and track width and axle offset can be calculated.
  • the body features the state of deflection or load of each wheel and / or the inclination of the body in the longitudinal and transverse directions can also be recorded.
  • DE 1 97 57 763 A1 specifies a similar device for determining the wheel and / or axle geometry of motor vehicles, but the determination of the vehicle-specific data takes place when the motor vehicle is at a standstill.
  • the wheel brands are designed by a manufacturer during manufacture on the rim, a wheel cap or the tire and that to differentiate the wheel brands, all wheel brands are designed differently, one wheel brand as the reference wheel brand is designed differently from the others, the differentiation of the other wheel marks by means of the evaluation device based on their position with respect to the reference wheel mark, or all wheel marks are of identical design, the wheel marks being differentiated by means of the evaluation device based on their position with respect to a wheel feature present on the wheel.
  • the wheel brands are already provided during manufacture and thus permanently on the wheel, in particular the rim or the wheel cap, they do not need to be attached before a measurement.
  • This offers the possibility that the measurement can be carried out in the manner of a service, for example at the entrance to a workshop or petrol station, using a suitably installed camera arrangement and the driver can be informed by the workshop personnel, for example, of a faulty lane or an unfavorable fall.
  • body features for example characteristic contours and type data stored in the evaluation device, further statements can be made, for example on a deflection or vibration behavior and thus suspension components.
  • the access route can be designed with defined bumps, for example.
  • the wheel brands and the reference wheel brand on the rims or the wheel covers can also be used as a design element.
  • a valve breakthrough or a company symbol can be used as a wheel feature to identify the different wheel brands according to their position.
  • the camera arrangement is arranged on a test station, the body or at least one wheel so that it can be pivoted or fixed by means of a holder.
  • the different positions of the camera result in different reference systems which are used by the evaluation device to determine the measurement data.
  • a favorable design of the device for the simple determination of measurement data on the wheel and / or axle geometry or of movement data of the wheel, the body and also the body relative to the wheel or different wheels consists in that the axis of rotation of a measured wheel by simultaneous detection of the wheel marks and at least one body mark is determined that the direction of the driving axis of the motor vehicle in the evaluation device on the basis of the detection of a movement path of the at least one body mark is determined when driving past the camera arrangement positioned at the test station and that the position of the axis of rotation of the wheel is determined with respect to the determined verticals and the direction of the driving axis.
  • Fig. 1 is a schematic representation of a test station with a camera arrangement for detecting a wheel and part of the body in front view or rear view and
  • Fig. 2 shows a possible formation of wheel features on a rim.
  • FIG. 1 On a test station by means of a camera arrangement 2, which can have several cameras for observation from different perspectives, several wheel marks 1 .2, 1 .3, 1 .4 arranged on a wheel 1 0 and an assigned reference wheel mark 1 .1 and / or a wheel feature 1 .4 (cf. FIG. 2) together with body marks present on a body of a motor vehicle.
  • the body marks can be characteristic features of the body 3 or specially attached body marks, for which purpose conventional fastening means (such as gluing, suction, adhesive means, magnetic adhesives, Velcro connections, rubber holders or tacking elements) are suitable. However, it is favorable to characteristic features of the body to be used if the measurement should be carried out quickly.
  • wheel marks 1 .2, 1 .3, 1 .4 receptacles are provided in a rim 1 for wheel nuts, one of which is used as a reference wheel mark 1 .1 to distinguish the other wheel marks 1 .2, 1 .3, which are of identical design. 1 .4 is formed.
  • a clear distinction between the individual wheel brands can then be made in the evaluation device in accordance with the sequences or positioning of the individual wheel brands.
  • the individual wheel brands 1 .2, 1 .3, 1 .4 can be differentiated by means of the evaluation device.
  • the wheel marks 1 .2, 1.3, 1 .4 or also the reference wheel mark 1.1 and the wheel feature 1 .5 are made on the rim 1 by the manufacturer or alternatively on a wheel cap and are thus arranged rigidly to one another.
  • axle geometry and / or movement data of the body 3, for example relative to the wheel 10 no further manipulations need to be carried out on the vehicle, so that the measurement, for example, while the vehicle is being driven into a workshop or petrol station by means of suitably positioned cameras can be made.
  • the parameters specified in detail in the publications DE 197 57 960 A1 and DE 197 57 763 A1 mentioned at the beginning can be recorded as measured variables.
  • a reference feature arrangement that is fixed to the test station can also be provided, which is arranged, for example, in an oscillating manner at the test station.
  • the camera arrangement 2 can also be attached to the wheel 10 or the body 3 by means of a suitable holder, which results in different reference systems which are taken into account by means of the evaluation device.
  • the device can easily determine a driving axis of the vehicle due to the path of movement of one or more body marks and with additional determination of the vertical direction on the basis of a reference feature arrangement or from in the evaluation device stored data determine an axis of rotation of the wheel 10.
  • the rotary planes of the different wheel brands 1 .1, 1 .2, 1 .3, 1 .4 the rotary plane of the wheel 10 can be exactly determined while compensating for a rim runout. With these measures, the corresponding measurement data can then be obtained, as explained in more detail in the cited documents (it being pointed out that a subsequent application for the German patent application 199 34 864 is filed, claiming the priority of this application, which contains all of its features ).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

Wheel markers that are positioned on at least one wheel (10) and that can be differentiated from one another are detected using a camera assembly (2) that can also be located on the bodywork (3). The wheel markers are configured on the wheel rim (1), wheel cover or on the tyre and all markers are configured differently in order to differentiate between them. One wheel marker is configured as a reference wheel marker. The bodywork (3) also bears markers. Information concerning the condition of the wheel suspension can thus be obtained (4).

Description

RADGEOMETRIEDATEN, ACHSGEOMETRIEDATEN, KAROSSERIEBEWEGUNGSDATEN MIT BEREITS BEI DER FERTIGUNG AUSGEBILDETER RADMARKENWHEEL GEOMETRY DATA, AXLE GEOMETRY DATA, BODY MOVEMENT DATA WITH ALREADY MANUFACTURED WHEEL BRANDS
Die Erfindung bezieht sich auf eine Vorrichtung zum Ermitteln von Rad-, Achs- geometriedaten und/oder Bewegungsdaten der Karosserie eines Kraftfahrzeugs relativ zu dem Felge und Reifen aufweisenden Rad mit einer Kameraanordnung mit der zumindest an dem Rad vorhandene, voneinander unterscheidbare Radmarken erfassbar sind, und mit einer der Kameraanordnung nachgeordneten Auswerteeinrichtung.The invention relates to a device for determining wheel, axle geometry and / or movement data of the body of a motor vehicle relative to the wheel having the rim and tire, with a camera arrangement with which distinguishable wheel marks that are present at least on the wheel can be detected, and with an evaluation device downstream of the camera arrangement.
Eine Vorrichtung dieser Art ist in der DE 197 57 760 A1 gezeigt. Bei dieser bekannten Vorrichtung zum Bestimmen der Rad- und/oder Achsgeometrie von Kraftfahrzeugen ist auf dem Prüfplatz eine Kameraanordnung vorgesehen, mit der aus zumindest zwei unterschiedlichen Perspektiven eine Markierungseinrichtung aus einer prüfplatzfesten Bezugsmerkmalsanordnung, mindestens einem Karosseriemerkmal und mindestens einem Radmerkmal zum Ermitteln der Rad- und/oder Achsgeometrie von Kraftfahrzeugen während einer Vorbeifahrt an der Kameraanordnung erfasst wird. Mit mehreren Radmerkmalen pro Rad kann dabei die Raddrehebene exakt festgestellt und ein Felgenschlag ermittelt werden. Mit der Vorrichtung können die Fahrachse, die Einzelspur für jedes Rad, die Gesamtspur für jedes Radpaar, der Sturz für jedes Rad, ein Radversatz vorn/hinten, Seitenversatz rechts/links, Spurweitendifferenz und Spurweite sowie Achsversatz rechnerisch ermittelt werden. Mit den Karosseriemerkmalen können zudem der Einfederungszustand bzw. Beladungszustand je Rad und/oder die Neigung der Karosserie in Längs- und Querrichtung erfasst werden.A device of this type is shown in DE 197 57 760 A1. In this known device for determining the wheel and / or axle geometry of motor vehicles, a camera arrangement is provided on the test station, with which, from at least two different perspectives, a marking device from a reference feature arrangement fixed to the test station, at least one Body feature and at least one wheel feature for determining the wheel and / or axle geometry of motor vehicles is detected while driving past the camera arrangement. With several wheel features per wheel, the wheel turning plane can be precisely determined and a rim runout can be determined. With the device, the driving axis, the single track for each wheel, the total track for each wheel pair, the camber for each wheel, a wheel offset front / rear, side offset right / left, track width difference and track width and axle offset can be calculated. With the body features, the state of deflection or load of each wheel and / or the inclination of the body in the longitudinal and transverse directions can also be recorded.
In der DE 1 97 57 763 A1 ist eine ähnliche Vorrichtung zum Bestimmen der Rad- und/oder Achsgeometrie von Kraftfahrzeugen angegeben, wobei die Ermittlung der fahrzeugspezifischen Daten jedoch im Stillstand des Kraftfahrzeugs erfolgt.DE 1 97 57 763 A1 specifies a similar device for determining the wheel and / or axle geometry of motor vehicles, but the determination of the vehicle-specific data takes place when the motor vehicle is at a standstill.
In der nicht vorveröffentlichten deutschen Patentanmeldung 1 99 34 864 ist eine weiter entwickelte Vorrichtung zum Bestimmen der Rad- und/oder Achsgeometrie von Kraftfahrzeugen vorgeschlagen, mit der ähnliche Messdaten wie gemäß den beiden vorstehend genannten Druckschriften ermittelt werden können, wobei jedoch der Aufbau der Vorrichtung und die Vorgehensweise zum Ermitteln der Messdaten vereinfacht sind. Hierbei wird die Richtung der Fahrachse des Fahrzeugs in der Auswerteeinrichtung auf der Grundlage der Erfassung der Markierungseinrichtung gesondert für jedes Rad aus einer Bewegungsbah n mindestens eines Karosseriemerkmals ermittelt und die Lage der Drehachse des Rads bezüglich der Vertikalen und der Richtung der so ermittelten Fahrachse bestimmt. Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art bereitzustellen, mit der die Vorgehensweise zum Ermitteln der Messdaten weiterhin vereinfacht wird.In the unpublished German patent application 1 99 34 864, a further developed device for determining the wheel and / or axle geometry of motor vehicles is proposed, with which similar measurement data as in the two aforementioned documents can be determined, but the structure of the device and the procedure for determining the measurement data is simplified. Here, the direction of the driving axis of the vehicle is determined on the basis of the detection of the marking device separately for each wheel from a movement path of at least one body feature and the position of the axis of rotation of the wheel with respect to the vertical and the direction of the driving axis determined in this way is determined. The object of the invention is to provide a device of the type mentioned at the outset, with which the procedure for determining the measurement data is further simplified.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst. Hiernach ist vorgesehen, dass die Radmarken von einem Hersteller bei der Fertigung an der Felge, einer Radkappe oder dem Reifen ausgebildet sind und dass zur Unterscheidung der Radmarken alle Radmarken unterschiedlich ausgebildet sind, eine Radmarke als Bezugsradmarke gegenüber den übrigen unterschiedlich ausgebildet ist, wobei die Unterscheidung der übrigen Radmarken mittels der Auswerteeinrichtung aufgrund ihrer Position bezüglich der Bezugsradmarke erfolgt, oder alle Radmarken gleich ausgebildet sind, wobei die Unterscheidung der Radmarken mittels der Auswerteeinrichtung aufgrund ihrer Position bezüglich eines an dem Rad vorhandenen Radmerkmals erfolgt.This object is achieved with the features of claim 1. According to this, it is provided that the wheel brands are designed by a manufacturer during manufacture on the rim, a wheel cap or the tire and that to differentiate the wheel brands, all wheel brands are designed differently, one wheel brand as the reference wheel brand is designed differently from the others, the differentiation of the other wheel marks by means of the evaluation device based on their position with respect to the reference wheel mark, or all wheel marks are of identical design, the wheel marks being differentiated by means of the evaluation device based on their position with respect to a wheel feature present on the wheel.
Da die Radmarken bereits bei der Herstellung und damit dauerhaft auf dem Rad, insbesondere der Felge oder der Radkappe vorgesehen sind, brauchen diese vor einer Messung nicht erst angebracht zu werden. Dies bietet die Möglichkeit, dass die Messung in Art einer Serviceleistung beispielsweise an der Zufahrt einer Werkstatt oder Tankstelle mittels einer geeignet installierten Kameraanordnung durchgeführt werden kann und der Fahrer von dem Werkstattpersonal beispielsweise auf eine fehlerhafte Spur oder einen ungünstigen Sturz hingewiesen werden kann. Unter zusätzlicher Ausnutzung von Karosseriemerkmalen, beispielsweise charakteristischer Konturen und in der Auswerteeinrichtung gespeicherten Typdaten können weitere Aussagen, beispielsweise zu einem Einfederungszu- stand oder zu einem Schwingungsverhalten und damit zu Radaufhängungskomponenten getroffen werden. Der Zufahrtsweg kann für solche Messungen etwa mit definierten Unebenheiten ausgebildet sein. Die Radmarken sowie die Bezugsradmarke lassen sich an den Felgen oder den Radkappen gleichzeitig auch als gestalterisches Element nutzen. Als Radmerkmal zum Identifizieren der verschiedenen Radmarken entsprechend ihrer Position kann z.B. ein Ventildurchbruch oder ein Firmensymbol genutzt werden.Since the wheel brands are already provided during manufacture and thus permanently on the wheel, in particular the rim or the wheel cap, they do not need to be attached before a measurement. This offers the possibility that the measurement can be carried out in the manner of a service, for example at the entrance to a workshop or petrol station, using a suitably installed camera arrangement and the driver can be informed by the workshop personnel, for example, of a faulty lane or an unfavorable fall. With additional use of body features, for example characteristic contours and type data stored in the evaluation device, further statements can be made, for example on a deflection or vibration behavior and thus suspension components. For such measurements, the access route can be designed with defined bumps, for example. The wheel brands and the reference wheel brand on the rims or the wheel covers can also be used as a design element. A valve breakthrough or a company symbol can be used as a wheel feature to identify the different wheel brands according to their position.
Günstige Gestaltungsmöglichkeiten bestehen darin, dass die Radmarken eingeformt und/oder mittels Lackierung ausgebildet sind.Favorable design options consist in the fact that the wheel brands are molded in and / or formed by means of painting.
Für unterschiedliche Auswertezwecke kann vorgesehen sein, dass die Kameraanordnung an einem Prüfplatz, der Karosserie oder mindestens einem Rad mittels einer Halterung schwenkbar oder fest angeordnet ist. Mit den verschiedenen Positionierungen der Kamera ergeben sich unterschiedliche Bezugssysteme, die von der Auswerteeinrichtung zum Ermitteln der Messdaten zugrunde gelegt werden.For different evaluation purposes, it can be provided that the camera arrangement is arranged on a test station, the body or at least one wheel so that it can be pivoted or fixed by means of a holder. The different positions of the camera result in different reference systems which are used by the evaluation device to determine the measurement data.
Eine günstige Ausbildung der Vorrichtung zum einfachen Ermitteln von Messdaten zur Rad- und/oder Achsgeometrie oder von Bewegungsdaten des Rades, der Karosserie und auch der Karosserie relativ zum Rad oder verschiedenen Rädern besteht darin, dass die Drehachse eines vermessenen Rades durch gleichzeitiges Erfassen der Radmarken und mindestens einer Karosseriemarke ermittelt wird, dass die Richtung der Fahrachse des Kraftfahrzeugs in der Auswerteeinrichtung auf der Grundlage der Erfassung einer Bewegungsbahn der mindestens einen Karosseriemarke bei einer Vorbeifahrt an der an dem Prüfplatz positionierten Kameraanordnung ermittelt wird und dass die Lage der Drehachse des Rades bezüglich der ermittelten Vertikalen und der Richtung der Fahrachse bestimmt wird.A favorable design of the device for the simple determination of measurement data on the wheel and / or axle geometry or of movement data of the wheel, the body and also the body relative to the wheel or different wheels consists in that the axis of rotation of a measured wheel by simultaneous detection of the wheel marks and at least one body mark is determined that the direction of the driving axis of the motor vehicle in the evaluation device on the basis of the detection of a movement path of the at least one body mark is determined when driving past the camera arrangement positioned at the test station and that the position of the axis of rotation of the wheel is determined with respect to the determined verticals and the direction of the driving axis.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:The invention is explained in more detail below using an exemplary embodiment with reference to the drawings. Show it:
Fig. 1 eine schematische Darstellung eines Prüfplatzes mit einer Kameraanordnung zum Erfassen eines Rades und eines Teils der Karosserie in Vorderansicht oder Rückansicht undFig. 1 is a schematic representation of a test station with a camera arrangement for detecting a wheel and part of the body in front view or rear view and
Fig. 2 eine mögliche Ausbildung von Radmerkmalen an einer Felge.Fig. 2 shows a possible formation of wheel features on a rim.
Wie Fig. 1 zeigt, können auf einem Prüfplatz mittels einer Kameraanordnung 2, die mehrere Kameras zur Beobachtung aus unterschiedlichen Perspektiven aufweisen kann-, mehrere an einem Rad 1 0 angeordnete Radmarken 1 .2, 1 .3, 1 .4 sowie eine zugeordnete Bezugsradmarke 1 .1 und/oder ein Radmerkmal 1 .4 (vgl. Fig. 2) zusammen mit an einer Karosserie eines Kraftfahrzeugs vorhandenen Karosseriemarken erfasst werden. Die Karosseriemarken können dabei charakteristische Merkmale der Karosserie 3 oder speziell angebrachte Karosseriemarken sein, wozu sich übliche Befestigungsmittel (wie Kleben, Saugen, Adhäsionsmittel, magnetische Haftmittel, Klettverbindungen, Gummihalterungen oder Heftelemente) eignen. Günstig ist es jedoch, charakteristische Merkmale der Karosserie auszunutzen, wenn eine schnelle Durchführung der Messung ermöglicht werden soll.As shown in FIG. 1, on a test station by means of a camera arrangement 2, which can have several cameras for observation from different perspectives, several wheel marks 1 .2, 1 .3, 1 .4 arranged on a wheel 1 0 and an assigned reference wheel mark 1 .1 and / or a wheel feature 1 .4 (cf. FIG. 2) together with body marks present on a body of a motor vehicle. The body marks can be characteristic features of the body 3 or specially attached body marks, for which purpose conventional fastening means (such as gluing, suction, adhesive means, magnetic adhesives, Velcro connections, rubber holders or tacking elements) are suitable. However, it is favorable to characteristic features of the body to be used if the measurement should be carried out quickly.
Als Radmarken 1 .2, 1 .3, 1 .4 sind vorliegend Aufnahmen in einer Felge 1 für Radmuttern vorgesehen, von denen eine als Bezugsradmarke 1 .1 zum Unterscheiden der übrigen, unter sich gleich ausgebildeten Radmarken 1 .2, 1 .3, 1 .4 ausgebildet ist. In der Auswerteeinrichtung kann dann entsprechend der Abfolgen bzw. Positionierung der einzelnen Radmarken eine eindeutige Unterscheidung der einzelnen Radmarken vorgenommen werden. Entsprechend kann auch aufgrund der Lage der Radmarken 1 .2, 1 .3, 1 .4 relativ zu der Anordnung oder Ausrichtung eines Radmerkmals 1 .5, wie z.B. eines Firmensymbols, eine Unterscheidung der einzelnen Radmarken 1 .2, 1 .3, 1 .4 mittels der Auswerteeinrichtung vorgenommen werden.As wheel marks 1 .2, 1 .3, 1 .4, receptacles are provided in a rim 1 for wheel nuts, one of which is used as a reference wheel mark 1 .1 to distinguish the other wheel marks 1 .2, 1 .3, which are of identical design. 1 .4 is formed. A clear distinction between the individual wheel brands can then be made in the evaluation device in accordance with the sequences or positioning of the individual wheel brands. Correspondingly, due to the position of the wheel marks 1 .2, 1 .3, 1 .4 relative to the arrangement or alignment of a wheel feature 1 .5, e.g. a company symbol, the individual wheel brands 1 .2, 1 .3, 1 .4 can be differentiated by means of the evaluation device.
Die Radmarken 1 .2, 1.3, 1 .4 bzw. auch die Bezugsradmarke 1.1 und das Radmerkmal 1 .5 sind herstellerseitig an der Felge 1 oder alternativ an einer Radkappe ausgebildet und damit starr zueinander angeordnet. Zum Ermitteln von Rad-, Achsgeometriedaten und/oder Bewegungsdaten der Karosserie 3 z.B. relativ zu dem Rad 10 brauchen keine weiteren Manipulationen an dem Fahrzeug vorgenommen zu werden, so dass die Messung beispielsweise während des Einfahrens des Fahrzeugs zu einer Werkstatt oder Tankstelle mittels geeignet positionierter Kameras vorgenommen werden kann. Als Messgrößen lassen sich insbesondere die in den eingangs erwähnten Druckschriften DE 197 57 960 A1 und DE 197 57 763 A1 im Einzelnen angegebenen Parameter erfassen. Auch können aufgrund der Bewegungsdaten der Karosserie 3 und des Rades 10, beispielsweise aufgrund des Schwingverhaltens der Karosserie 3 und des Rades 10 für sich und relativ zueinander, Aussagen zu dem Zustand von Radaufhängungskomponenten 4 getroffen werden. Hierbei kann auch eine prüfplatzfeste Bezugsmerkmalsanordnung zusätzlich vorgesehen sein, die z.B. pendelnd am Prüfplatz angeordnet ist.The wheel marks 1 .2, 1.3, 1 .4 or also the reference wheel mark 1.1 and the wheel feature 1 .5 are made on the rim 1 by the manufacturer or alternatively on a wheel cap and are thus arranged rigidly to one another. To determine the wheel, axle geometry and / or movement data of the body 3, for example relative to the wheel 10, no further manipulations need to be carried out on the vehicle, so that the measurement, for example, while the vehicle is being driven into a workshop or petrol station by means of suitably positioned cameras can be made. In particular, the parameters specified in detail in the publications DE 197 57 960 A1 and DE 197 57 763 A1 mentioned at the beginning can be recorded as measured variables. Also based on the movement data of the body 3 and the wheel 10, for example on the basis of the vibration behavior of the body 3 and the wheel 10 for themselves and relative to each other, statements about the condition of wheel suspension components 4 are made. In this case, a reference feature arrangement that is fixed to the test station can also be provided, which is arranged, for example, in an oscillating manner at the test station.
Wie bereits eingangs ausgeführt, kann die Kameraanordnung 2 auch mittels einer geeigneten Halterung an dem Rad 10 oder der Karosserie 3 angebracht sein, womit sich jeweils unterschiedliche Bezugssysteme ergeben, die mittels der Auswerteeinrichtung berücksichtigt werden.As already stated at the beginning, the camera arrangement 2 can also be attached to the wheel 10 or the body 3 by means of a suitable holder, which results in different reference systems which are taken into account by means of the evaluation device.
Wie eingangs unter Bezugnahme auf die nicht vorveröffentlichte deutsche Patentantmeldung 199 34 864 weiter ausgeführt, lässt sich mit der Vorrichtung aufgrund der Bewegungsbahn eines oder mehrere Karosseriemarken eine Fahrachse des Fahrzeugs ohne Weiteres feststellen und mit zusätzlicher Bestimmung der vertikalen Richtung aufgrund einer Bezugsmerkmalsanordnung oder von in der Auswerteeinrichtung hinterlegten Daten eine Drehachse des Rades 10 bestimmen. Mittels der Drehebenen der verscheidenen Radmarken 1 .1 , 1 .2, 1 .3, 1 .4 lässt sich die Drehebene des Rades 10 unter Kompensation eines Felgenschlags genau bestimmen. Mit diesen Maßnahmen können dann die entsprechenden Messdaten gewonnen werden, wie in den genannten Druck-schriften näher ausgeführt (wobei darauf hingewiesen wird, dass zu der deutschen Patentanmeldung 199 34 864 eine Nachanmeldung unter Inanspruchnahme der Priorität dieser Anmeldung eingereicht wird, die deren sämtliche Merkmale beinhaltet). As further explained at the beginning with reference to the unpublished German patent application 199 34 864, the device can easily determine a driving axis of the vehicle due to the path of movement of one or more body marks and with additional determination of the vertical direction on the basis of a reference feature arrangement or from in the evaluation device stored data determine an axis of rotation of the wheel 10. By means of the rotary planes of the different wheel brands 1 .1, 1 .2, 1 .3, 1 .4, the rotary plane of the wheel 10 can be exactly determined while compensating for a rim runout. With these measures, the corresponding measurement data can then be obtained, as explained in more detail in the cited documents (it being pointed out that a subsequent application for the German patent application 199 34 864 is filed, claiming the priority of this application, which contains all of its features ).

Claims

Ansprüche Expectations
1 . Vorrichtung zum Ermitteln von Rad-, Achsgeometriedaten und/oder Bewegungsdaten der Karosserie (3) eines Kraftfahrzeugs relativ zu dem Felge (1 ) und Reifen aufweisenden Rad (10) mit einer Kameraanordnung (2) mit der zumindest an dem Rad (10) vorhandene, voneinander unterscheidbare Radmarken (1 .1 , 1 .2, 1 .4) erfassbar sind, und mit einer der Kameraanordnung (2) nachgeordneten Auswerteeinrichtung, dadurch gekennzeichnet, dass die Radmarken (1 .2, 1 .3, 1.4) von einem Hersteller bei der Fertigung an der Felge (1 ), einer Radkappe oder dem Reifen ausgebildet sind und dass zur Unterscheidung der Radmarken ( 1 . 1 , 1 .2, 1 .3, 1 .4) alle Radmarken unterschiedlich ausgebildet sind, eine Radmarke als Bezugsradmarke (1 .1 ) gegenüber den übrigen unterschiedlich ausgebildet ist, wobei die Unterscheidung der übrigen Radmarken (1 .2, 1 .3, 1 .4) mittels der Auswerteeinrichtung aufgrund ihrer Position bezüglich der Bezugsrad- marke (1 .1 ) erfolgt, oder alle Radmarken (1 .2, 1 .3, 1.4) gleich ausgebildet sind, wobei die Unterscheidung der Radmarken (1 .2, 1 .3, 1 .4) mittels der Auswerteeinrichtung aufgrund ihrer Position bezüglich eines an dem Rad ( 10) vorhandenen Radmerkmals (1 .5) erfolgt. 1 . Device for determining wheel, axle geometry and / or movement data of the body (3) of a motor vehicle relative to the rim (1) and tire (10) with a camera arrangement (2) with the at least on the wheel (10), Wheel marks (1 .1, 1 .2, 1 .4) which can be distinguished from one another can be detected, and with an evaluation device arranged downstream of the camera arrangement (2), characterized in that the wheel marks (1 .2, 1 .3, 1.4) are from a manufacturer in the manufacture of the rim (1), a wheel cap or the tire and that to differentiate the wheel brands (1. 1, 1 .2, 1 .3, 1 .4) all wheel brands are designed differently, one wheel brand as the reference wheel brand (1 .1) is different from the others, the other wheel marks (1 .2, 1 .3, 1 .4) being differentiated by means of the evaluation device on the basis of their position with respect to the reference wheel mark (1 .1), or all wheel brands (1 .2, 1 .3, 1.4) same ch are formed, the wheel marks (1 .2, 1 .3, 1 .4) being differentiated by means of the evaluation device on the basis of their position with respect to a wheel feature (1 .5) present on the wheel (10).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Radmarken (1 .2, 1 .3, 1 .4) eingeformt und/oder mittels Lackierung ausgebildet sind.2. Device according to claim 1, characterized in that the wheel marks (1 .2, 1 .3, 1 .4) are molded in and / or are formed by means of painting.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kameraanordnung (2) an einem Prüfplatz, der Karosserie (3) oder mindestens einem Rad (10) . mittels einer Halterung schwenkbar oder fest angeordnet ist.3. Device according to claim 1 or 2, characterized in that the camera arrangement (2) at a test station, the body (3) or at least one wheel (10). is pivotally or fixedly arranged by means of a holder.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Drehachse eines vermessenen Rades (1 0) durch gleichzeitiges Erfassen der Radmarken ( 1 .2, 1 .3, 1 .4) Und mindestens einer Karosseriemarke ermittelt wird, dass die Richtung der Fahrachse des Kraftfahrzeugs in der Auswerteeinrichtung auf der Grundlage der Erfassung einer Bewegungsbahn der mindestens einen Karosseriemarke bei einer Vorbeifahrt an der an dem Prüfplatz positionierten Kameraanordnung (2) ermittelt wird und dass die Lage der Drehachse des Rades (10) bezüglich der ermittelten Vertikalen und der Richtung der Fahrachse bestimmt wird .4. Device according to one of the preceding claims, characterized in that the axis of rotation of a measured wheel (1 0) by simultaneous detection of the wheel marks (1 .2, 1 .3, 1 .4) and at least one body mark is determined that the direction the driving axis of the motor vehicle in the evaluation device is determined on the basis of the detection of a movement path of the at least one body mark when driving past the camera arrangement (2) positioned at the test station and that the position of the axis of rotation of the wheel (10) with respect to the determined verticals and Direction of the driving axis is determined.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Vertikale mittels zusätzlicher Erfassung einer auf dem Prüfplatz positionierten Bezugsmerkmalsanordnung oder mittels mit der Kameraanordnung (2) aufgrund ihrer Lagerung festgestellter Lageinformation oder in ihr gespeicherter Daten gestgestellt wird.5. The device according to claim 4, characterized in that the vertical is created by means of additional detection of a reference feature arrangement positioned on the test station or by means of position information or data stored in the camera arrangement (2) based on its storage.
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mittels der Auswerteeinrichtung auch eine Radstellung relativ zur Karosserie (3) ermittelt wird. 6. Device according to one of the preceding claims, characterized in that a wheel position relative to the body (3) is also determined by means of the evaluation device.
PCT/DE2001/002295 2000-07-04 2001-06-21 Geometrical wheel data, geometrical axle data and bodywork displacement data comprising wheel markers configured at the production stage WO2002003027A1 (en)

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DE2000132356 DE10032356A1 (en) 2000-07-04 2000-07-04 Device for determining wheel, axle geometry and / or movement data of the body of a vehicle

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