Photoplethysmographic Signal Processing Using Adaptive Sum Comb Filter for Pulse Delay Measurement

Fotopletüsmograafilise signaali töötlus pulsi viiteaja mõõtmisel adaptiivse kammfiltriga

Kristjan Pilt ； Kalju Meigas ； Rain Ferenets ； Jüri Kaik

《Estonian Journal of Engineering》 16-1 (2010/03) Pp. 78-94

並列摘要

Pulse transit time, which correlates with blood pressure, is measured between the electrocardiogram R-wave peak and 50% raising front level of a photoplethysmographic (PPG) signal. Registered PPG signal bandwidth may be shared by noise and therefore the signal raising front is undetectable. Electrocardiogram reference adaptive sum comb filter was used to extract the harmonic components of the PPG signal and suppress the noises between them. Averaging effect of the filter on the PPG signal was studied and adjustments were made. The influence of the comb filtered PPG signal on the measurement of pulse transit time was analysed.

並列關鍵字

photoplethysmography ； electrocardiography ； pulse transit time ； adaptive comb filter