Foreign objects impinging on a ground transceiver assembly (GTA) of a wireless power transfer (WPT) station are detected using a two-stage foreign object detection system. In a first stage, at least one camera is positioned to observe a charging position of the GTA and an area surrounding the charging position. In a second stage, an impedance measurement circuit measures an impedance of a wireless power transfer coil of the GTA. An imaging processor analyzes images from the at least one camera to identify changes or features indicative of introduction of a foreign object onto an exposed surface of the GTA or in the area surrounding the charging position. A foreign object detection (FOD) controller triggers an impedance inspection of the GTA by the impedance measurement circuit and initiates a failsafe operation when movement of an object crossing into or over the charging position is detected.


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    Titel :

    FOREIGN OBJECT DETECTION FOR WIRELESS POWER TRANSFER SYSTEMS


    Beteiligte:
    WARD MATTHEW L (Autor:in) / RIVÉ JORGE E (Autor:in)

    Erscheinungsdatum :

    19.10.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01V Geophysik , GEOPHYSICS / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G06V / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme



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