a and b waves detection in acceleration photoplethysmogram

An efficient and robust method based on two moving average filters followed by a dynamic event duration threshold has been developed to detect a and b waves in the acceleration photoplethysmogram signals. The detection of a and b waves is affected by the quality of the photoplethysmogram recordings, especially for the heat stressed collection. The developed a method detects a and b waves in Arrhythmia APG Signals that suffer from: 1) non-stationary effects, 2) low signal-to-noise ratio, The performance of the proposed method was tested on 27 records collected in normal and heat-stressed conditions resulting in 99.68 percent sensitivity and 99.57 percent positive predictivity.