A QRS Detection and R Point Recognition Method for Wearable Single-Lead ECG Devices

In the new-generation wearable Electrocardiogram (ECG) system, signal processing with low power consumption is required to transmit data when detecting dangerous rhythms and to record signals when detecting abnormal rhythms. The QRS complex is a combination of three of the graphic deflection seen on...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2017-08, Vol.17 (9), p.1969
Main Authors: Chen, Chieh-Li, Chuang, Chun-Te
Format: Article
Language:English
Subjects:
Arrhythmia
Cardiac arrhythmia
Computation
ECG
edge computing
Electrocardiography
Embedded systems
heartbeat detection
IoT
mobile healthcare
QRS detection
Real time
Recognition
Signal processing
wearable device
Wearable technology
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Summary:In the new-generation wearable Electrocardiogram (ECG) system, signal processing with low power consumption is required to transmit data when detecting dangerous rhythms and to record signals when detecting abnormal rhythms. The QRS complex is a combination of three of the graphic deflection seen on a typical ECG. This study proposes a real-time QRS detection and R point recognition method with low computational complexity while maintaining a high accuracy. The enhancement of QRS segments and restraining of P and T waves are carried out by the proposed ECG signal transformation, which also leads to the elimination of baseline wandering. In this study, the QRS fiducial point is determined based on the detected crests and troughs of the transformed signal. Subsequently, the R point can be recognized based on four QRS waveform templates and preliminary heart rhythm classification can be also achieved at the same time. The performance of the proposed approach is demonstrated using the benchmark of the MIT-BIH Arrhythmia Database, where the QRS detected sensitivity (Se) and positive prediction (+P) are 99.82% and 99.81%, respectively. The result reveals the approach's advantage of low computational complexity, as well as the feasibility of the real-time application on a mobile phone and an embedded system.
ISSN:1424-8220
1424-8220
DOI:10.3390/s17091969