lee-noncontactdetection-2015.pdf (3.99 MB)
Noncontact detection and analysis of respiratory function using microwave Doppler Radar
journal contribution
posted on 2015-01-01, 00:00 authored by Yee Siong Lee, Pubudu PathiranaPubudu Pathirana, R J Evans, C L SteinfortReal-time respiratory measurement with Doppler Radar has an important advantage in the monitoring of certain conditions such as sleep apnoea, sudden infant death syndrome (SIDS), and many other general clinical uses requiring fast nonwearable and non-contact measurement of the respiratory function. In this paper, we demonstrate the feasibility of using Doppler Radar in measuring the basic respiratory frequencies (via fast Fourier transform) for four different types of breathing scenarios: normal breathing, rapid breathing, slow inhalation-fast exhalation, and fast inhalation-slow exhalation conducted in a laboratory environment. A high correlation factor was achieved between the Doppler Radar-based measurements and the conventional measurement device, a respiration strap. We also extended this work from basic signal acquisition to extracting detailed features of breathing function (I: E ratio). This facilitated additional insights into breathing activity and is likely to trigger a number of new applications in respiratory medicine.
History
Journal
Journal of sensorsVolume
2015Article number
548136Pagination
1 - 13Publisher
Hindawi Publishing CorporationLocation
New York, N.Y.Publisher DOI
ISSN
1687-725XeISSN
1687-7268Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, The AuthorsUsage metrics
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