Feasibility Study of Heartbeat Detection from Optical Interferometric Signal by using Convolution Kernel Compensation

Sebastijan Šprager, Aleš Holobar, Damjan Zazula

2013

Abstract

In this paper, a feasibility of detecting heartbeat from optical interferometric signal by using convolution kernel compensation (CKC) latent variable analysis (LVA) approach is examined. Optical interferometer is a very sensitive device that detects physical elongation of the optical fibre. When used as bed or body sensor, mechanical and audible activity of the heart produce perturbations in the detected signal that, when extracted by LVA, allows completely unobtrusive monitoring of heartbeat. We performed an experiment with fourteen young healthy participants. They exercised on a cycle ergometer until they reached their submaximal heart rate (85 % of maximal heart rate). During resting period after the exercise optical interferometric signal was acquired along with the referential ECG signal. CKC-based decomposition of 1-minute-long signal segments was performed. The obtained efficiency (sensitivity of 97.8 ± 3.0 %, precision of 93.6 ± 7.6 %) and accuracy (reference-to-detected beat delay of 167 ± 65 ms) are within acceptable limits indicating that unobtrusive heartbeat detection using the proposed approach is feasible.

Paper Citation

in Harvard Style

Šprager S., Holobar A. and Zazula D. (2013). Feasibility Study of Heartbeat Detection from Optical Interferometric Signal by using Convolution Kernel Compensation . In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2013) ISBN 978-989-8565-36-5, pages 396-400. DOI: 10.5220/0004328303960400

in Bibtex Style

@conference{biosignals13,
author={Sebastijan Šprager and Aleš Holobar and Damjan Zazula},
title={Feasibility Study of Heartbeat Detection from Optical Interferometric Signal by using Convolution Kernel Compensation},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2013)},
year={2013},
pages={396-400},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004328303960400},
isbn={978-989-8565-36-5},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2013)
TI - Feasibility Study of Heartbeat Detection from Optical Interferometric Signal by using Convolution Kernel Compensation
SN - 978-989-8565-36-5
AU - Šprager S.
AU - Holobar A.
AU - Zazula D.
PY - 2013
SP - 396
EP - 400
DO - 10.5220/0004328303960400