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 11:
12. The method according to claim 11, wherein the determining whether the induction signals of the coil group have an abnormal value comprises:
determining, for each detection coil in the coil group, an absolute value of a difference between an average value of signal values of the induction signal of the detection coil obtained in the second time period and the signal threshold of the coil group; and
if the absolute value corresponding to each detection coil in the coil group is less than or equal to a preset value, determining that the induction signals of the coil group have no abnormal value; or
if an absolute value corresponding to at least one detection coil in the coil group is greater than the preset value, determining that the induction signals of the coil group have an abnormal value.