Patent ID: 11944417
Assignee: BOMDIC INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A wearing detection method, comprising:
in response to determining that the wearable device is in a static state, emitting a plurality of first photoplethysmography (PPG) signals, and detecting a plurality of second PPG signals corresponding to the first PPG signals;
obtaining a zero-crossing rate corresponding to the second PPG signals;
in response to determining that the zero-crossing rate of the second PPG signals is greater than a reference threshold, determining that the wearable device is in an unworn state;
in response to determining that the zero-crossing rate of the second PPG signals is not greater than the reference threshold, determining that the wearable device is in a worn state.