A Level-Crossing Based QRS-Detection Algorithm for Wearable ECG Sensors

作者：Ravanshad Nassim^*; Rezaee Dehsorkh Hamidreza; Lotfi Reza; Lian Yong

来源：IEEE Journal of Biomedical and Health Informatics, 2014, 18(1): 183-192.

DOI：10.1109/JBHI.2013.2274809

• Analog-to-digital converter (ADC)
• asynchronous analog-to-information conversion system
• level-crossing sampling
• QRS detection
• wearable electrocardiogram (ECG) monitoring devices

In this paper, an asynchronous analog-to-information conversion system is introduced for measuring the RR intervals of the electrocardiogram (ECG) signals. The system contains a modified level-crossing analog-to-digital converter and a novel algorithm for detecting the R-peaks from the level-crossing sampled data in a compressed volume of data. Simulated with MIT-BIH Arrhythmia Database, the proposed system delivers an average detection accuracy of 98.3%, a sensitivity of 98.89%, and a positive prediction of 99.4%. Synthesized in 0.13 mu m CMOS technology with a 1.2 V supply voltage, the overall system consumes 622 nW with core area of 0.136 mm(2), which make it suitable for wearable wireless ECG sensors in body-sensor networks.

• 出版日期2014-1