Patent ID: 11909228
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  B  Y | IPC B  H

Claim 10:
11. The method according to claim 5, wherein there are a plurality of coil groups, and the detecting whether there is a foreign object in the detection region corresponding to the coil array comprises:
determining, for each coil group based on the signal threshold of the coil group and the induction signals of the coil group obtained in the second time period, whether the induction signals of the coil group have an abnormal value; and
if the induction signals of each coil group each has no abnormal value or each has an abnormal value, determining that there is no foreign object in the detection region corresponding to the coil array; or
if induction signals of at least one of the coil groups have an abnormal value, and induction signals of at least one of the coil groups have no abnormal value, determining that there is a foreign object in the detection region corresponding to the coil array.