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Algoritmically improved microwave radar monitors breathing more acurrate than sensorized belt.
Czyzewski, Andrzej; Kostek, Bozena; Kurowski, Adam; Narkiewicz, Krzysztof; Graff, Beata; Odya, Piotr; Smialkowski, Tomasz; Sroczynski, Andrzej.
  • Czyzewski A; Department of Multimedia Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80­233, Gdansk, Poland.
  • Kostek B; Audio Acoustics Department, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80­233, Gdansk, Poland. bokostek@audioakustyka.org.
  • Kurowski A; Department of Multimedia Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80­233, Gdansk, Poland.
  • Narkiewicz K; Audio Acoustics Department, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80­233, Gdansk, Poland.
  • Graff B; Department of Hypertension and Diabetology, Medical University of Gdansk, 80­210, Gdansk, Poland.
  • Odya P; Department of Hypertension and Diabetology, Medical University of Gdansk, 80­210, Gdansk, Poland.
  • Smialkowski T; Department of Multimedia Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80­233, Gdansk, Poland.
  • Sroczynski A; Siled Co. Ltd, 83-011, Gdansk, Poland.
Sci Rep ; 12(1): 14412, 2022 08 24.
Article in English | MEDLINE | ID: covidwho-2016837
ABSTRACT
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.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Radar / Microwaves Limits: Humans Language: English Journal: Sci Rep Year: 2022 Document Type: Article Affiliation country: S41598-022-18808-2

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Radar / Microwaves Limits: Humans Language: English Journal: Sci Rep Year: 2022 Document Type: Article Affiliation country: S41598-022-18808-2