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Power-efficient cross-correlation beat detection in electrocardiogram analysis using bitstreams.

Authors
  • Liseth, Olav E
  • Mo, Daniel
  • Hjortland, Håkon A
  • Lande, Tor Sverre
  • Wisland, Dag T
Type
Published Article
Journal
IEEE transactions on biomedical circuits and systems
Publication Date
Dec 01, 2010
Volume
4
Issue
6
Pages
419–425
Identifiers
DOI: 10.1109/TBCAS.2010.2079933
PMID: 23853379
Source
Medline
Language
English
License
Unknown

Abstract

In this paper, we present a novel cross-correlator chip suitable for "smart" ECG electrodes. Sophisticated QRS-detection is feasible exploring multicomponent-based cross-correlation and by exploiting the simplicity offered by bitstream processing. The chip is evaluated using real ECG signals as an example application. Power-efficient running cross correlation is obtained with novel asynchronous circuit solutions consuming approximately 730 μ W while processing ECG data sampled at a rate of 250 Hz. The implemented generic cross-correlator may be explored for other pattern-matching applications in wireless sensor networks or other low-power applications.

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