L. Rossini, R. Vetter, C. Verjus, P. Theurillat, P. Renevey, M. Bertschi, J. Krauss



We have developed a device for heart rate estimation with the optical sensing unit integrated in a classic media player earphone. The sensing principle is based on an optical infrared measurement directly on the ear lobe whereas the heart rate estimation is obtained utilizing robust model-based signal processing techniques valid even for quasi periodic activities such as running. Nevertheless, the remaining problem related to these strategies are statistically undetectable inter-beat during short term sporadic activities. In this paper, we present a novel robust inter-beat discarding method based on an activity related modeling of the expected heart rate dynamics that incorporates a simple cardiovascular model to reduce related inaccuracies in the heart rate estimation. A validation protocol has been designed and 9 subjects were asked to carry out their daily normal office activities for a time length ranging from 1 to 2 hours. A global absolute relative error mean of 0.9% between the estimated heart rate and a reference device and a sensitivity above 90% demonstrate encouraging performances of the proposed device.


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Paper Citation

in Harvard Style

Rossini L., Vetter R., Verjus C., Theurillat P., Renevey P., Bertschi M. and Krauss J. (2009). ROBUST EAR LOCATED HEART RATE MONITOR . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009) ISBN 978-989-8111- 64-7, pages 214-219. DOI: 10.5220/0001541002140219

in Bibtex Style

author={L. Rossini and R. Vetter and C. Verjus and P. Theurillat and P. Renevey and M. Bertschi and J. Krauss},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)},
isbn={978-989-8111- 64-7},

in EndNote Style

JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)
SN - 978-989-8111- 64-7
AU - Rossini L.
AU - Vetter R.
AU - Verjus C.
AU - Theurillat P.
AU - Renevey P.
AU - Bertschi M.
AU - Krauss J.
PY - 2009
SP - 214
EP - 219
DO - 10.5220/0001541002140219