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Adaptive Noise Reduction Algorithm to Improve R Peak Detection in ECG Measured by Capacitive ECG Sensors

Title
Adaptive Noise Reduction Algorithm to Improve R Peak Detection in ECG Measured by Capacitive ECG Sensors
Authors
Seo, MinseokChoi, MinhoLee, Jun SeongKim, Sang Woo
Date Issued
Jul-2018
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Abstract
Electrocardiograms (ECGs) can be conveniently obtained using capacitive ECG sensors. However, motion noise in measured ECGs can degrade R peak detection. To reduce noise, properties of reference signal and ECG measured by the sensors are analyzed and a new method of active noise cancellation (ANC) is proposed in this study. In the proposed algorithm, the original ECG signal at QRS interval is regarded as impulsive noise because the adaptive filter updates its weight as if impulsive noise is added. As the proposed algorithm does not affect impulsive noise, the original signal is not reduced during ANC. Therefore, the proposed algorithm can conserve the power of the original signal within the QRS interval and reduce only the power of noise at other intervals. The proposed algorithm was verified through comparisons with recent research using data from both indoor and outdoor experiments. The proposed algorithm will benefit a noise reduction of noisy biomedical signal measured from sensors.
URI
http://oasis.postech.ac.kr/handle/2014.oak/95212
ISSN
1424-8220
Article Type
Article
Citation
Sensors, vol. 18, no. 7, 2018-07
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 KIM, SANG WOO
Dept of Electrical Enginrg
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