The condition of a tyre (5) on a wheel (2) is assessed while the wheel (2) is mounted on a vehicle (1) and while the vehicle (1) is moving. As the vehicle (1) moves, the tyre (5) rotates and moves longitudinally along a path of movement. An imaging device (3, 4) captures images of a plurality of different portions (7) of the periphery of the tyre (5), which has tread portions (10) separated by tread gaps (11), whilst the tyre (5) revolves. While the images are being captured, longitudinally spaced flash units (F1, F2, F3, F4) are activated to illuminate portions (7) of the periphery of the tyre (5). The flash units (F1, F2, F3, F4) are positioned to one side of the path of movement of the tyre (5) and direct light at an acute angle to the path of movement of the tyre (5) so that the light causes shadows to be cast in the tread gaps (11) between tread portions (10). Each flash unit (F1, F2, F3, F4) causes a series of flashes of light to be produced when the flash unit (F1, F2, F3, F4) is activated, each flash of light in the series being separated from the next flash of light in the series by an interval. For any flash units (F1, F2, F3, F4) which are activated at the same time and illuminate overlapping portions of the periphery of tyre (5), the respective series of flashes of light are out of phase so that the flashes of light from one flash unit (F1, F2, F3, F4) are emitted in the intervals between the flashes of light from the or each other flash unit (F1, F2, F3, F4). The images are analysed by data processing apparatus (8) to determine the extent of shadows in the tread gaps (11) so as to provide an indication of the depth of the tread gaps (11).


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Tyre condition analysis


    Beteiligte:

    Erscheinungsdatum :

    2020-03-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60C VEHICLE TYRES , Fahrzeugreifen / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



    TYRE CONDITION ANALYSIS

    ROSE PETER NORMAN / CODD ALEXANDER PAUL / KAZMI SYED WAJAHAT ALI SHAH | Europäisches Patentamt | 2023

    Freier Zugriff

    TYRE CONDITION ANALYSIS

    ROSE PETER NORMAN / CODD ALEXANDER PAUL / KAZMI SYED WAJAHAT ALI SHAH | Europäisches Patentamt | 2017

    Freier Zugriff

    Tyre condition analysis

    ROSE PETER NORMAN / CODD ALEXANDER PAUL / KAZMI SYED WAJAHAT ALI SHAH | Europäisches Patentamt | 2020

    Freier Zugriff

    TYRE CONDITION ANALYSIS

    ROSE PETER NORMAN / CODD ALEXANDER PAUL / KAZMI SYED WAJAHAT ALI SHAH | Europäisches Patentamt | 2018

    Freier Zugriff

    TYRE TREAD DEPTH AND TYRE CONDITION DETERMINATION

    RHOADES ANTHONY DAVID GEORGE | Europäisches Patentamt | 2015

    Freier Zugriff