{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A sensor arrangement for a foreign object detection device for a wireless power transfer system includes a multitude of detection cells, each comprising a sense coil (20) including a winding spirally wound in a plane and having a multitude of turns. A multitude of input leads and one or more output…",
  "path": "/patents/1400441",
  "publishedAt": "2024-06-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01V3/101",
    "DELTA ELECTRONICS THAILAND PUBLIC CO LTD [TH]"
  ],
  "textContent": "A sensor arrangement for a foreign object detection device for a wireless power transfer system includes a multitude of detection cells, each comprising a sense coil (20) including a winding spirally wound in a plane and having a multitude of turns. A multitude of input leads and one or more output leads are provided such that each detection cell may be connected to a current input and a current output, either directly or by a selection circuit adapted to selectively establish an electrical connection between the current input and one or more of the input leads or between one or more of the output leads and the current output. To achieve a more even sensitivity for the detection of foreign objects near a particular detection cell, the sense coil (20) of that detection cell includes an outer coil section (201) and an inner coil section (20b) arranged inside the outer coil section, wherein a first distance between an outermost turn of the inner coil section and an innermost turn of the outer coil section is at least twice a largest distance between two turns of the outer region.",
  "title": "SENSOR ARRANGEMENT FOR A FOREIGN OBJECT DETECTION DEVICE"
}