- 专利标题: Foreign object detection using heat sensitive material and inductive sensing
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申请号: US15620548申请日: 2017-06-12
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公开(公告)号: US10444394B2公开(公告)日: 2019-10-15
- 发明人: Hans Peter Widmer , Lukas Sieber , Markus Bittner
- 申请人: WiTricity Corporation
- 申请人地址: US MA Watertown
- 专利权人: WiTricity Corporation
- 当前专利权人: WiTricity Corporation
- 当前专利权人地址: US MA Watertown
- 代理机构: Colby Nipper PLLC
- 主分类号: G01K7/00
- IPC分类号: G01K7/00 ; G01N25/00 ; G01V3/10 ; G01V11/00 ; G01V9/00 ; H02J50/40 ; B60L53/12 ; B60L53/60 ; B60L53/124 ; H01F5/00
摘要:
In certain aspects, a method and apparatus for detecting foreign objects using heat sensitive material and inductive sensing is disclosed. In certain aspects, a foreign object detection system includes a heat sensing system comprising a heat sensitive material having a property configured to change as a function of temperature. The foreign object detection system further includes an inductive sensing system comprising one or more sense coils, wherein a change in an electrical characteristic of the one or more sense coils is indicative of presence of a foreign object. The foreign object detection system further includes a controller coupled to the heat sensing system and the inductive sensing system, wherein the controller is configured to determine presence of the foreign object based on at least one of a measure of the property of the heat sensitive material or a measure of the electrical characteristic of the one or more sense coils.
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