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Noise-Reducing Fabric Electrode for ECG Measurement

Department of Computer Science and Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan
Department of Electrical and Electronic Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan
Author to whom correspondence should be addressed.
Academic Editor: Ki H. Chon
Sensors 2021, 21(13), 4305;
Received: 20 May 2021 / Revised: 21 June 2021 / Accepted: 22 June 2021 / Published: 23 June 2021
(This article belongs to the Section Biomedical Sensors)
In this work, we propose a fabric electrode with a special structure that can play the role of a noise reduction filter. Fabric electrodes made of the conductive fabric have been used for long-term ECG measurements because of their flexibility and non-invasiveness; however, due to the large impedance between the skin and the fabric electrodes, noise is easily introduced into the ECG signal. In contrast to conventional work, in which chip-type passive elements are glued to the electrode to reduce noise, the proposed electrode can obtain a noise-reduced ECG by changing the structure of fabric. Specifically, the proposed electrode was folded multiple times to form a capacitor with a capacitance of about 3 nF. It is combined with the skin-electrode impedance to form a low-pass filter. In the experiment, we made a prototype of the electrodes and measured ECG at rest and during EMG-induced exercise. As a result, the SNR values at rest and during exercise were improved about 12.02 and 10.29 dB, respectively, compared with the fabric electrode without special structure. In conclusion, we have shown that changing the fabric electrode structure effectively removes noise in ECG measurement. View Full-Text
Keywords: textile; electrocardiography; denoising textile; electrocardiography; denoising
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MDPI and ACS Style

Terada, T.; Toyoura, M.; Sato, T.; Mao, X. Noise-Reducing Fabric Electrode for ECG Measurement. Sensors 2021, 21, 4305.

AMA Style

Terada T, Toyoura M, Sato T, Mao X. Noise-Reducing Fabric Electrode for ECG Measurement. Sensors. 2021; 21(13):4305.

Chicago/Turabian Style

Terada, Takamasa, Masahiro Toyoura, Takahide Sato, and Xiaoyang Mao. 2021. "Noise-Reducing Fabric Electrode for ECG Measurement" Sensors 21, no. 13: 4305.

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