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 |
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Title of host publication | Unknown Host Publication |
Publisher | IEEE Xplore |
Pages | 1861-1864 |
Number of pages | 4 |
DOIs | |
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 |
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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.