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Advances in Body Area Networks I pp 343–356Cite as

Impedance Characteristics of the Skin-Electrode Interface of Dry Textile Electrodes for Wearable Electrocardiogram

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Abstract

Long-term dynamic Electrocardiogram (ECG) monitoring is considered as one of the main methods of preventing heart diseases. Ag/AgCl wet electrodes, although used clinically, are not suitable for long-time wearing. Dry textile electrodes, however, have won much attention for surmounting these drawbacks. This essay explains the impedance characteristics of the skin-electrode interface of wearable dry textile electrodes for measuring ECG. Specifically, through analyzing the characteristics of dry textile electrodes, the skin-electrode interface equivalent circuit models were built, the textile electrodes were made and the electrochemical impedance spectroscopy (EIS) for the skin-electrode interface was measured. Finally, the influence of each parameter to the interface was assessed. The research illustrated that interface of dry textile electrodes were more complicated than that of standard Ag/AgCl electrodes. The interface impedance |Z| and the interface phase were relevant to the signal frequency and the key of descending the interface impedance was to lower the polarization resistance. The textile electrodes have the Constant Phase Angle Element (CPE) behavior due to the dispersion effect of the time constant within the Frequency of ECG measuring.

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Acknowledgements

This work is supported by National Natural Science Foundation of China (no. 61572110) and National Key Research and Development Plan of China (no. 2016YFB1001401).

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Authors and Affiliations

  1. School of Automation Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu, 611731, China

    Fan Xiong, Dongyi Chen, Zhenghao Chen, Chen Jin & Shumei Dai

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  1. Fan Xiong
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  2. Dongyi Chen
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  3. Zhenghao Chen
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  4. Chen Jin
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  5. Shumei Dai
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Correspondence to Dongyi Chen .

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Editors and Affiliations

  1. DIMES, Cubo 41C, Universita della Calabria, Rende, Cosenza, Italy

    Giancarlo Fortino

  2. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, Liaoning, Liaoning, China

    Zhelong Wang

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Xiong, F., Chen, D., Chen, Z., Jin, C., Dai, S. (2019). Impedance Characteristics of the Skin-Electrode Interface of Dry Textile Electrodes for Wearable Electrocardiogram. In: Fortino, G., Wang, Z. (eds) Advances in Body Area Networks I. Internet of Things. Springer, Cham. https://doi.org/10.1007/978-3-030-02819-0_26

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  • DOI: https://doi.org/10.1007/978-3-030-02819-0_26

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-02818-3

  • Online ISBN: 978-3-030-02819-0

  • eBook Packages: EngineeringEngineering (R0)

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