Wearable device and method for evaluating respiratory tract infection

A wearable device, wherein the wearable device comprises:

• at least one first sensor, configured to obtain an audio signal of a user;
• at least one second sensor, configured to obtain a physiological parameter signal of the user, wherein the at least one second sensor comprises a photoplethysmography (PPG) sensor, the PPG sensor is configured to obtain a PPG signal of the user;
• and
• at least one processor, configured to:
• obtain a first respiratory rate of the user based on the PPG signal, and obtain a respiratory tract infection evaluation report of the user based on the audio signal and the first respiratory rate.

A method, comprising:

• obtaining an audio signal of a user;
• obtaining a physiological parameter signal of the user;
• obtaining a respiratory rate of the user based on the physiological parameter signal;
• and
• obtaining a respiratory tract infection evaluation report of the user based on the audio signal and the respiratory rate;
• wherein the obtaining a physiological parameter signal of the user comprises:
• obtaining a photoplethysmography (PPG) signal of the user, wherein the PPG signal comprises the physiological parameter signal;
• and
• the obtaining a respiratory rate of the user based on the physiological parameter signal comprises:
• obtaining a first respiratory rate of the user based on the PPG signal.

A wearable device, wherein the wearable device comprises:

• at least one accelerometer (ACC) sensor, configured to obtain an ACC signal of a user;
• at least one photoplethysmography (PPG) sensor, configured to obtain a PPG signal of the user;
• at least one processor, configured to obtain a posture classification result of the user based on the ACC signal, wherein the posture classification result comprises a first posture and a second posture, the first posture comprises a state in which a wearing position of the user is stressed for supporting, and the second posture comprises a state in which the wearing position of the user is naturally placed;
• when the user is in the first posture, the at least one processor is further configured to obtain a first respiratory rate of the user based on the PPG signal;
• when the user is in the second posture, the at least one processor is further configured to:
• obtain a first respiratory rate of the user based on the PPG signal, obtain a second respiratory rate of the user based on the ACC signal, and perform filtering and fusion on the first respiratory rate and the second respiratory rate, to obtain a third respiratory rate of the user.