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Comparison of PS25015A Dry Electrodes and Two Different Ag/AgCl Wet Electrodes for ECG Applications

Authors:
Nika Zolfaghari
Mohsen Shafeie
Shahini Sirikantharajah
Kristiina Valter McConville

Keywords: Electrocardiogram (ECG), Dry electrode, Wet electrode, Cross correlation, Peak detection,

Abstract:
The electrocardiogram (ECG) is one of the most important signals acquired from the body, as it serves as the immediate source of information relating to heart performance. Hence, a lot of research has gone into various types of ECG acquisition methods and systems. With the numerous methods and systems available at hand, it is important to compare, contrast, and evaluate the existing techniques. Not only does this help distinguish between the different techniques, it also helps build on the existing methods to create successful acquisition systems that can surpass the effect of unwanted factors, such as movement and other noise artifacts. This paper compares two different ECG acquisition systems, one of which uses PS25015A dry electrodes and the other, which uses two different silver/silver chloride (Ag/AgCl) wet electrodes. ECG signals were acquired from three healthy individuals, in the sitting position, using both systems simultaneously. Signals were first filtered to diminish noise then the R-wave peaks were detected. The voltage values of these peaks were compared between the devices and electrodes via statistical analysis. The signal-to-noise ratio (SNR) values of the signals were obtained as well and finally, the correlation coefficient of the signals were obtained. Overall, the dry electrodes may have a better SNR. However, the dry electrodes provided a lower wave amplitude, compared to the wet electrodes.

Pages: 79 to 83

Copyright: Copyright (c) IARIA, 2014

Publication date: November 16, 2014

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-375-9

Location: Lisbon, Portugal

Dates: from November 16, 2014 to November 20, 2014