A dual-mode wavelet based R-wave detector using single-V_t for leakage reduction [cardiac pacemaker applications]

Summary, in English

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

• Author: Joachim Rodrigues; Thomas Olsson; Leif Sörnmo; Viktor Öwall
• Department/s: Department of Electrical and Information Technology
• Publishing year: 2005
• Language: English
• Pages: 1330-1333
• Publication/Series: IEEE International Symposium on Circuits and Systems (ISCAS)
• Links: http://dx.doi.org/10.1109/ISCAS.2005.1464841
• Document type: Conference paper
• Publisher: IEEE - Institute of Electrical and Electronics Engineers Inc.
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• 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
• Conference name: IEEE International Symposium on Circuits and Systems (ISCAS), 2005
• Conference date: 2005-05-23 - 2005-05-26
• Conference place: Kobe, Japan
• Status: Published
• ISBN/ISSN/Other: ISBN: 0-7803-8834-8