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

Antonio Bosnjak; Alan Kennedy; Pedro Linares; Maira Borges de Linares; JAD McLaughlin; OJ Escalona

doi:10.1109/EMBC.2017.8037209

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

Antonio Bosnjak, Alan Kennedy, Pedro Linares, Maira Borges de Linares, JAD McLaughlin, OJ Escalona

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

11 Citations (Scopus)

485 Downloads (Pure)

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.

Original language	English
Title of host publication	Unknown Host Publication
Publisher	IEEE Xplore
Pages	1861-1864
Number of pages	4
DOIs	https://doi.org/10.1109/EMBC.2017.8037209
Publication status	Published - 14 Sep 2017
Event	39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Jeju Island, South Korea Duration: 14 Sep 2017 → …

Conference

Conference	39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Period	14/09/17 → …

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.

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Cite this

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

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.",

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.",

author = "Antonio Bosnjak and Alan Kennedy and Pedro Linares and {Borges de Linares}, Maira and JAD McLaughlin and OJ Escalona",

year = "2017",

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doi = "10.1109/EMBC.2017.8037209",

language = "English",

pages = "1861--1864",

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Bosnjak, A, Kennedy, A, Linares, P, Borges de Linares, M, McLaughlin, JAD & Escalona, OJ 2017, Performance assessment of dry electrodes for wearable long term cardiac rhythm monitoring: skin-electrode impedance spectroscopy. in Unknown Host Publication. IEEE Xplore, pp. 1861-1864, 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 14/09/17. https://doi.org/10.1109/EMBC.2017.8037209

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 ; Escalona, OJ.

Unknown Host Publication. IEEE Xplore, 2017. p. 1861-1864.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Linares, Pedro

AU - Borges de Linares, Maira

AU - McLaughlin, JAD

AU - Escalona, OJ

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AB - 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.

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

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