Algoritmically improved microwave radar monitors breathing more acurrate than sensorized belt

This paper describes a novel way to measure, process, analyze, and compare respiratory signals acquired by two types of devices: a wearable sensorized belt and a microwave radar-based sensor. Both devices provide breathing rate readouts. First, the background research is presented. Then, the underly...

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Bibliographic Details
Published in:Scientific reports 2022-08, Vol.12 (1), p.14412-14412, Article 14412
Main Authors: Czyżewski, Andrzej, Kostek, Bozena, Kurowski, Adam, Narkiewicz, Krzysztof, Graff, Beata, Odya, Piotr, Śmiałkowski, Tomasz, Sroczyński, Andrzej
Format: Article
Language:English
Subjects:
639/166
639/166/985
Coronaviruses
COVID-19
Data processing
Humanities and Social Sciences
Microwave radar
multidisciplinary
Radar
Respiration
Science
Science (multidisciplinary)
Sensors
Signal processing
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Summary:This paper describes a novel way to measure, process, analyze, and compare respiratory signals acquired by two types of devices: a wearable sensorized belt and a microwave radar-based sensor. Both devices provide breathing rate readouts. First, the background research is presented. Then, the underlying principles and working parameters of the microwave radar-based sensor, a contactless device for monitoring breathing, are described. The breathing rate measurement protocol is then presented, and the proposed algorithm for octave error elimination is introduced. Details are provided about the data processing phase; specifically, the management of signals acquired from two devices with different working principles and how they are resampled with a common processing sample rate. This is followed by an analysis of respiratory signals experimentally acquired by the belt and microwave radar-based sensors. The analysis outcomes were checked using Levene’s test, the Kruskal–Wallis test, and Dunn’s post hoc test. The findings show that the proposed assessment method is statistically stable. The source of variability lies in the person-triggered breathing patterns rather than the working principles of the devices used. Finally, conclusions are derived, and future work is outlined.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-18808-2