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Heart Rate Artifact Suppression, Christopher Dickson

Masters Theses

Motion artifact strongly corrupts heart rate measurements in current pulse oximetry systems. In many, almost any motion will greatly diminish the system’s ability to extract a reliable heart rate. The artifact is most likely present due to normally non-pulsatile components of the body, such as venous blood and tissue fluid, which become pulsatile during motion. This paper presents a motion artifact reduction method using an accelerometer that attempts to recover a usable heart rate sensor signal that has been corrupted by motion. The method was developed for a wrist pulse oximeter sensor and was adapted for a ring sensor, both …