|
KMID : 1137820220430040280
|
|
의공학회지
2022 Volume.43 No. 4 p.280 ~ p.289
|
|
|
Development of Real-time QRS-complex Detection Algorithm for Portable ECG Measurement Device
|
|
An Hwi
Shim Hyoung-Jin
Park Jae-Soon
Lhm Jong-Tae
Joung Yeun-Ho
|
|
|
Abstract
|
|
|
|
In this paper, we present a QRS-complex detection algorithm to calculate an accurate heartbeat and clearly recognize irregular rhythm from ECG signals. The conventional Pan-Tompkins algorithm brings false QRS detection in the derivative when QRS and noise signals have similar instant variation. The proposed algorithm uses amplitude differences in 7 adjacent samples to detect QRS-complex which has the highest amplitude variation. The calculated amplitude is cubed to dominate QRS-complex and the moving average method is applied to diminish the noise signal’s amplitude. Finally, a decision rule with a threshold value is applied to detect accurate QRS-complex. The calculated signals with Pan-Tompkins and proposed algorithms were compared by signal-to-noise ratio to evaluate the noise reduction degree. QRS-complex detection performance was confirmed by sensitivity and the positive predictive value(PPV). Normal ECG, muscle noise ECG, PVC, and atrial fibrillation signals were achieved which were measured from an ECG simulator. The signal-to-noise ratio difference between Pan-Tompkins and the proposed algorithm were 8.1, 8.5, 9.6, and 4.7, respectively. All ratio of the proposed algorithm is higher than the Pan-Tompkins values. It indi- cates that the proposed algorithm is more robust to noise than the Pan-Tompkins algorithm. The Pan-Tompkins algo- rithm and the proposed algorithm showed similar sensitivity and PPV at most waveforms. However, with a noisy atrial fibrillation signal, the PPV for QRS-complex has different values, 42% for the Pan-Tompkins algorithm and 100% for the proposed algorithm. It means that the proposed algorithm has superiority for QRS-complex detection in a noisy environment.
|
|
|
KEYWORD
|
|
|
Electrocardiogram (ECG), QRS-complex detection, Arrhythmia, Pan-Tompkins algorithm, Noise Reduction
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|
|