Systems and methods are described for an extended-range positioning system based on foreign-object detection (FOD). In particular, a power-transfer apparatus is disclosed that includes a coil and a foreign-object-detection (FOD) system. The coil is configured to generate a magnetic field based on an electric current running through the coil for transferring power to a receiver device the FOD system includes a plurality of FOD sense loops, FOD circuitry, and active-beacon receive circuitry. The FOD sense loops detect metal objects within the magnetic field based on changes to an electrical characteristic(s) of one or more of the FOD sense loops. The FOD circuitry processes a modulation pattern of the electrical characteristic(s) of the one or more FOD sense loops and provides first positioning information. The active-beacon receive circuitry processes induced voltage in at least two sense loops to provide second positioning information.
描述了用于基于异物检测(FOD)的扩展范围定位系统的系统和方法。具体地,公开了包括线圈和异物检测(FOD)系统的功率转移装置。线圈被配置为基于流过线圈的电流来生成磁场以用于将功率转移至接收器设备。FOD系统包括多个FOD感测回路、FOD电路装置、以及有源信标接收电路装置。FOD感测回路基于FOD感测回路中的一个或多个FOD感测回路的电特性的变化检测在磁场内的金属物体。FOD电路装置处理一个或多个FOD感测回路的电特性的调制模式并且提供第一定位信息。有源信标接收电路处理至少两个感应环路中的感应电压以提供第二定位信息。
EXTENDED-RANGE POSITIONING SYSTEM BASED ON FOREIGN-OBJECT DETECTION
基于异物检测的扩展范围定位系统
2021-04-30
Patent
Elektronische Ressource
Chinesisch
IPC: | G01V Geophysik , GEOPHYSICS / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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