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Performance assessment of dry electrodes for wearable long term cardiac rhythm monitoring: skin-electrode impedance spectroscopy

Bosnjak, Antonio, Kennedy, Alan, Linares, Pedro, Borges de Linares, Maira, McLaughlin, JAD and Escalona, OJ (2017) Performance assessment of dry electrodes for wearable long term cardiac rhythm monitoring: skin-electrode impedance spectroscopy. In: 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jeju Island, South Korea. IEEE Xplore Digital Library. 4 pp. [Conference contribution]

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URL: http://ieeexplore.ieee.org/browse/conferences/title/

DOI: 10.1109/EMBC.2017.8037209

Abstract

The use of wearable dry sensors for recording long term ECG signals is a requirement for certain studies of heart rhythm. Knowledge of the skin-electrode electrical performance of dry electrodes is necessary when seeking to improve various processing stages for signal quality enhancement. In this paper, methods for the assessment of dry skin-electrode impedance (Zse) and its modelling are presented.Measurements were carried out on selected electrode materials such as silver, stainless steel, AgCl (dry) and polyurethane. These had ZSE values between 500 kΩ and 1 MΩ within the main ECG frequency range (1 Hz – 100 Hz); in contrast to plain iron material which had a significantly higher impedance. However, in spite of the high Zse values, open bandwidth ECG traces were of acceptable quality and stability; with dry AgCl material offering the best ECG trace performance.

Item Type:Conference contribution (Paper)
Keywords:Dry ECG electrodes, electrode-skin impedance, electrode impedance spectroscopy, arm-wrist wearables, long-term heart rhythm, ambulatory ECG monitoring, WASTCArD project, MSCA-RISE Programme, skin impedance modelling, gelled ECG electrodes.
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:37947
Deposited By: Professor Omar Escalona
Deposited On:24 Oct 2017 14:45
Last Modified:24 Oct 2017 14:45

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