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A 0.83-µW QRS Detection Processor Using Quadratic Spline Wavelet Transform for Wireless ECG Acquisition in 0.35-µm CMOS
Ieong, C.I.; Mak, P. I.; Lam, C.P.; Dong, C.; Vai, M. I.; Mak, P. U.; Pun, S. H.; Wan, F.; Martins, R. P.
2012-12-01
Source PublicationIEEE Transactions on Biomedical Circuits and Systems
ISSN1932-4545
Pages586-595
AbstractHealthcare electronics count on the effectiveness of the on-patient signal preprocessing unit to moderate the wireless data transfer for better power efficiency. In order to reduce the system power in long-time ECG acquisition, this work describes an on-patient QRS detection processor for arrhythmia monitoring. It extracts the concerned ECG part, i.e., the RR-interval between the QRS complex for evaluating the heart rate variability. The processor is structured by a scale-3 quadratic spline wavelet transform followed by a maxima modulus recognition stage. The former is implemented via a symmetric FIR filter, whereas the latter includes a number of feature extraction steps: zero-crossing detection, peak (zero-derivative) detection, threshold adjustment and two finite state machines for executing the decision rules. Fabricated in 0.35-µm CMOS the 300-Hz processor draws only 0.83 µW, which is favorably comparable with the prior arts. In the system tests, the input data is placed via an on-chip 10-bit SAR analog-to-digital converter, while the output data is emitted via an off-the-shelf wireless transmitter (TI CC2500) that is configurable by the processor for different data transmission modes: 1) QRS detection result, 2) raw ECG data or 3) both. Validated with all recordings from the MIT-BIH arrhythmia database, 99.31% sensitivity and 99.70% predictivity are achieved. Mode 1 with solely the result of QRS detection exhibits 6 reduction of system power over modes 2 and 3.
KeywordQRS detection quadratic spline wavelet transform wavelet transform wearable electrocardiograph (ECG) device wireless ECG monitoring
Language英語English
The Source to ArticlePB_Publication
PUB ID27692
Document TypeJournal article
Recommended Citation
GB/T 7714
Ieong, C.I.,Mak, P. I.,Lam, C.P.,et al. A 0.83-µW QRS Detection Processor Using Quadratic Spline Wavelet Transform for Wireless ECG Acquisition in 0.35-µm CMOS[J]. IEEE Transactions on Biomedical Circuits and Systems,2012:586-595.
APA Ieong, C.I.,Mak, P. I.,Lam, C.P.,Dong, C.,Vai, M. I.,Mak, P. U.,Pun, S. H.,Wan, F.,&Martins, R. P..(2012).A 0.83-µW QRS Detection Processor Using Quadratic Spline Wavelet Transform for Wireless ECG Acquisition in 0.35-µm CMOS.IEEE Transactions on Biomedical Circuits and Systems,586-595.
MLA Ieong, C.I.,et al."A 0.83-µW QRS Detection Processor Using Quadratic Spline Wavelet Transform for Wireless ECG Acquisition in 0.35-µm CMOS".IEEE Transactions on Biomedical Circuits and Systems (2012):586-595.
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