MOTION COMPENSATION FOR OPTICAL HEART RATE SENSORS

摘要

A method of optical heart rate sensing includes receiving a motion frequency from a motion sensor and receiving an optical signal from an optical sensor. The motion frequency is then filtered from the optical signal, and an estimated heart rate frequency is determined based on the filtered optical signal. A heart rate is reported that is based on the motion frequency, but not based on the estimated heart rate frequency, when a local neighbor magnitude ratio of the estimated heart rate frequency is below a confidence threshold.

主权项

1. A method of optical heart rate sensing, comprising:
receiving a motion frequency via a motion sensor; receiving an optical signal from an optical sensor; filtering the motion frequency from the optical signal; determining an estimated heart rate frequency based on the filtered optical signal; and reporting a heart rate based on the motion frequency, but not based on the estimated heart rate frequency responsive to a local neighbor magnitude ratio of the estimated heart rate frequency being less than a confidence threshold.