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Author Coetzee, F.M. ♦ Elghazzawi, Z.
Sponsorship IEEE Engineering in Medicine and Biology Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1964
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Engineering & allied operations
Subject Keyword Signal processing ♦ Signal reconstruction ♦ Heart rate ♦ Adaptive filters ♦ Heart rate detection ♦ Signal detection ♦ Blood ♦ Frequency modulation ♦ Pressure control ♦ Heart beat
Abstract Describes a noise-resistant pulse oximetry algorithm suited to both signal reconstruction and oxygen saturation estimation. The algorithm first detects relatively clean signal sections from which the heart rate is estimated. The heart rate is used to construct a synthetic reference signal that matches an idealized pulse signal. An adaptive filter continuously processes the sensor signals, reconstructing signals in a linear subspace defined by the reference signal. A projective subspace algorithm is then applied to find the oxygenation level of the blood. The authors show that under specific circumstances this algorithm solves the sufficiency condition for signal reconstruction in linear saturation estimators. The core principle of using a frequency modulated synthetic reference signal can be applied to adaptive filtering of other physiological signals controlled by the heartbeat, such as blood pressure and electrocardiogram.
Description Author affiliation :: Siemens Corp. Res. Inc., Princeton, NJ, USA
ISSN 00189294
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2000-08-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 47
Issue Number 8
Size (in Bytes) 244.89 kB
Page Count 9
Starting Page 1018
Ending Page 1026

Source: IEEE Xplore Digital Library