Electronic device comprising barometric pressure sensor, and barometric pressure sensor data calibration method therefor

A barometric pressure sensor data calibration method performed by an electronic device comprising a barometric pressure sensor and an inertial sensor, the method comprising:

• storing, in a memory, a barometric pressure offset estimation model according to posture characteristics of the electronic device;
• acquiring a barometric pressure sensor signal from the barometric pressure sensor and acquiring an inertial sensor signal from the inertial sensor;
• based on a fall or impact event being detected from the inertial sensor signal, identifying a first segment in which there is no motion of the electronic device in an inertial sensor signal before the fall or impact event is detected;
• remodeling the barometric pressure offset estimation model stored in the memory, based on reference barometric pressure and reference acceleration extracted from the first segment;
• identifying a second segment in which there is no motion of the electronic device in an inertial sensor signal after the fall or impact event is detected;
• estimating a barometric pressure correction value of the barometric pressure sensor by applying barometric pressure and acceleration extracted from the identified second segment as input values to the remodeled barometric pressure offset estimation model;
• and
• acquiring calibrated barometric pressure data by reflecting the barometric pressure correction value in the barometric pressure sensor signal after the fall or impact event is detected.

An electronic apparatus comprising:

• a motion sensor configured to generate motion data;
• a waterproof pressure sensor configured to generate atmospheric pressure data;
• memory storing instructions and a pressure offset estimation model associated with orientations of the electronic apparatus;
• and
• a processor communicatively coupled to the memory, the motion sensor, and the waterproof pressure sensor, wherein the instructions, when executed by the processor, cause the electronic apparatus to:
• monitor the motion data to detect a trigger event representing a physical impact;
• determine a pre-event stationary window from the motion data occurring prior to the trigger event;
• update the pressure offset estimation model stored in the memory based on a baseline pressure value and a baseline orientation value obtained from the pre-event stationary window;
• determine a post-event stationary window from the motion data occurring after the trigger event;
• calculate a correction factor by inputting pressure and orientation values obtained from the post-event stationary window into the updated pressure offset estimation model;
• and
• generate compensated pressure information by applying the correction factor to pressure data captured subsequent to the trigger event.