A dual-mode wavelet based R-wave detector using single-V<sub>t</sub> for leakage reduction [cardiac pacemaker applications]
Rodrigues, Joachim; Olsson, Thomas; Sörnmo, Leif; Öwall, Viktor (2005). A dual-mode wavelet based R-wave detector using single-V<sub>t</sub> for leakage reduction [cardiac pacemaker applications] IEEE International Symposium on Circuits and Systems (ISCAS), 1330 - 1333. IEEE International Symposium on Circuits and Systems (ISCAS), 2005. Kobe, Japan: IEEE - Institute of Electrical and Electronics Engineers Inc.
Conference Proceeding/Paper
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Published
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English
Authors:
Rodrigues, Joachim
;
Olsson, Thomas
;
Sörnmo, Leif
;
Öwall, Viktor
Department:
Department of Electrical and Information Technology
Abstract:
This paper presents the implementation of a dual mode wavelet based R-wave detector for cardiac pacemakers. A previously published R-wave detector was developed for a noisy environment. This detector has been supplemented with a noise detector that operates in supervision mode, and automatically activates/deactivates 2/3 of the detector hardware without performance degradation. The noise detection is based on zero-crossing rate computation. A low clock frequency results in leakage power being the main power source. Power estimation shows that the power consumption in an ASIC is reduced by 67% when using gate-transistors in the power supply rails. The detector has been synthesized in 0.13 μm low-leakage CMOS technology
Keywords:
electrogram ;
dual-mode wavelet based R-wave detector ;
leakage power reduction ;
cardiac pacemakers ;
supervision mode noise detector ;
noise detection ;
ASIC ;
power supply rail gate-transistors ;
zero-crossing rate computation ;
low-leakage CMOS ;
0.13 micron ;
EGM detection ;
wavelet filterbank ;
threshold function ;
generalized likelihood ratio test ;
GLRT
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