Seismocardiography (SCG) is a non-invasive method of analyzing and recording cardiovascular activity as vibrations transmitted to the chest wall. Mobile devices offer the possibility to monitor health parameters thanks to embedded sensors. Various applications have been proposed for SCG, including heart rate calculation. Our aim is to detect heart beat on seismocardiograms using improved algorithm and compare its performance with results obtained in previous study. Algorithm proposed in this study consists of signal preprocessing, RMS envelope calculation and peak finding. Algorithm performance was measured as sensitivity (Se) and positive predictive value (PPV) of beat detection on 4 signals acquired from 4 subjects. We achieved average Se= 0.994 and PPV= 0.966 and in the best case Se= 0.995 and PPV= 0.970. Results prove major improvement of beat detection from smartphone seismocardiograms since the previous study.
|Titel||Advances in Intelligent Systems and Computing : Innovations in Biomedical Engineering. IBE 2018|
|Publikationsstatus||Veröffentlicht - 15.08.2019|