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Open AccessArticle

Comparison of Active Electrode Materials for Non-Contact ECG Measurement

Center for Intelligent Medical Electronics, School of Information Science and Technology, Fudan University, Shanghai 200433, China
Author to whom correspondence should be addressed.
Sensors 2019, 19(16), 3585;
Received: 19 July 2019 / Revised: 11 August 2019 / Accepted: 14 August 2019 / Published: 17 August 2019
(This article belongs to the Special Issue Wearable Biomedical Sensors 2019)
For long-term and more convenience electrocardiograph (ECG) monitoring, an active- electrode-based ECG monitoring system, which can measure ECG through clothes, is proposed in this paper. The hardware of the system includes active electrodes, signal processing and data transmission modules and the software mainly includes a denoising algorithm based on empirical mode decomposition (EMD). Then the proposed system was verified using the comparison of the ECG signals measured synchronously by active electrodes and Ag/AgCl electrodes. In addition, three flexible materials, including conductive textile, copper foil tape and a flexible printed circuit (FPC) are developed for the sensing layer with active electrodes. To compare the performance of these three materials for the sensing layer, the ECG signals of 10 subjects were measured by different materials in three postures and several indexes for quality evaluation were calculated. Results show that effective and clear ECG waveforms can be measured by all three kinds of materials and the quality of ECG signals measured by FPC is the best by conducting a significant t-test for signal quality indexes of three materials. View Full-Text
Keywords: ECG monitoring; active electrode; flexible materials; signal quality indexes ECG monitoring; active electrode; flexible materials; signal quality indexes
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Peng, S.; Xu, K.; Chen, W. Comparison of Active Electrode Materials for Non-Contact ECG Measurement. Sensors 2019, 19, 3585.

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