Wearable device-based physiological detection method and wearable device

A wearable device-based physiological detection method, wherein the wearable device comprises a multi-source sensor, the multi-source sensor comprises a photoplethysmographic PPG sensor and one or more motion sensors, and the method comprises:

• receiving, by the wearable device, a first operation, wherein the first operation is used to trigger the wearable device to detect a physiological parameter of a wearer of the wearable device;
• in response to the first operation, collecting, by the wearable device, PPG data by using the PPG sensor, storing, in a first buffer, the PPG data collected by the PPG sensor, collecting motion data by using the motion sensor, and separately storing, in one or more second buffers, motion data collected by each motion sensor, wherein each piece of PPG data collected by the PPG sensor and each piece of motion data collected by the motion sensor separately correspond to one timestamp, which is used to record a collection time of corresponding data;
• separately obtaining, by the wearable device from each second buffer based on timestamps corresponding to M pieces of PPG data, a plurality of pieces of motion data that meet a preset condition after collecting the M pieces of PPG data in the first buffer, wherein M is a preset value, the plurality of pieces of motion data that meet the preset condition in each second buffer are continuously collected by a corresponding motion sensor, times recorded by timestamps corresponding to the plurality of pieces of motion data are later than a time recorded by a first timestamp, a time recorded by a timestamp corresponding to at least one piece of motion data is earlier than a time recorded by a second timestamp, and a difference between a quantity of the plurality of pieces of motion data and M is less than a first preset value;
• the first timestamp is a timestamp with an earliest recording time in the timestamps corresponding to the M pieces of PPG data, and the second timestamp is a timestamp with a latest recording time in the timestamps corresponding to the M pieces of PPG data;
• and
• obtaining and outputting, by the wearable device, a physiological detection result based on the M pieces of PPG data and the plurality of pieces of motion data that meet the preset condition and that are obtained from the one or more second buffers.