THERMAL NOISE MODEL OF CAPACITIVE ACTIVE ELECTRODE FOR INDIRECT-CONTACT ECG

Yong Gyu Lim

Abstract

The indirect-contact ECG (IDC-ECG) shows large background noise in comparison with conventional ECG measurement. To improve the signal quality, close study of the background noise is necessary. This study was carried out to investigate how much the thermal noise influences the background noise in IDC-ECG. To do so, the thermal noise model was built for the active electrode. And then, the parameters which determine the thermal noise were estimated by measuring the gain of the active electrode. Finally, the level of thermal noise was estimated and compared with actual background noise. The results show that the thermal noise is the dominant component of background noise and the intrinsic noise of the preamp’s active devices is negligible.

References

  1. Lim Y G, Kim K K, Park K S, 2006. ECG measurement on a chair without conductive contact. IEEE Trans Biomed Eng 53: 956-959
  2. Ott H W, 1988. Noise Reduction Techniques in Electronic Systems, John Wiley & Sons, New York
  3. TI, 1998. Data sheet of OPA124.
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Paper Citation


in Harvard Style

Lim Y. (2012). THERMAL NOISE MODEL OF CAPACITIVE ACTIVE ELECTRODE FOR INDIRECT-CONTACT ECG . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012) ISBN 978-989-8425-91-1, pages 110-113. DOI: 10.5220/0003720901100113


in Bibtex Style

@conference{biodevices12,
author={Yong Gyu Lim},
title={THERMAL NOISE MODEL OF CAPACITIVE ACTIVE ELECTRODE FOR INDIRECT-CONTACT ECG},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)},
year={2012},
pages={110-113},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003720901100113},
isbn={978-989-8425-91-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)
TI - THERMAL NOISE MODEL OF CAPACITIVE ACTIVE ELECTRODE FOR INDIRECT-CONTACT ECG
SN - 978-989-8425-91-1
AU - Lim Y.
PY - 2012
SP - 110
EP - 113
DO - 10.5220/0003720901100113