{
  "$type": "site.standard.document",
  "description": "A foreign object detection apparatus and method, and a wireless charger. In the foreign object detection apparatus, a signal generation module generates a first calibration excitation signal based on first indication information received from a processing module and generates at least two first…",
  "path": "/patents/1342247",
  "publishedAt": "2023-04-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/60",
    "Huawei Digital Power Technologies Co., Ltd."
  ],
  "textContent": "A foreign object detection apparatus and method, and a wireless charger. In the foreign object detection apparatus, a signal generation module generates a first calibration excitation signal based on first indication information received from a processing module and generates at least two first calibration carrier signals based on the first indication information. A phase difference detection module determines, based on each first calibration carrier signal and a first current signal obtained by a foreign object detection module under an action of the first calibration excitation signal, a first phase difference between each first calibration carrier signal and the first current signal. The processing module determines a target initial phase based on the first phase difference, and then generates second indication information. The second indication information indicates the signal generation module to generate a detection carrier signal whose initial phase is the target initial phase.",
  "title": "FOREIGN OBJECT DETECTION APPARATUS AND METHOD AND WIRELESS CHARGER"
}