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Article

Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients

1
Institute of High-Frequency Technology, Hamburg University of Technology, 21073 Hamburg, Germany
2
Institute for Electronics Engineering, Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
*
Author to whom correspondence should be addressed.
Current address: Denickestraße 22, 21073 Hamburg, Germany.
Sensors 2020, 20(20), 5827; https://doi.org/10.3390/s20205827
Received: 18 September 2020 / Revised: 8 October 2020 / Accepted: 9 October 2020 / Published: 15 October 2020
(This article belongs to the Special Issue Advances in Microwave and Millimeter Wave Radar Sensors)
In hospitals, continuous monitoring of vital parameters can provide valuable information about the course of a patient’s illness and allows early warning of emergencies. To enable such monitoring without restricting the patient’s freedom of movement and comfort, a radar system is attached under the mattress which consists of four individual radar modules to cover the entire width of the bed. Using radar, heartbeat and respiration can be measured without contact and through clothing. By processing the raw radar data, the presence of a patient can be determined and movements are categorized into the classes “bed exit”, “bed entry”, and “on bed movement”. Using this information, the vital parameters can be assessed in sections where the patient lies calmly in bed. In the first step, the presence and movement classification is demonstrated using recorded training and test data. Next, the radar was modified to perform vital sign measurements synchronized to a gold standard device. The evaluation of the individual radar modules shows that, regardless of the lying position of the test person, at least one of the radar modules delivers accurate results for continuous monitoring. View Full-Text
Keywords: continuous wave radar; remote sensing; vital signs; vital parameter measurement; bed exit detection continuous wave radar; remote sensing; vital signs; vital parameter measurement; bed exit detection
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MDPI and ACS Style

Schellenberger, S.; Shi, K.; Michler, F.; Lurz, F.; Weigel, R.; Koelpin, A. Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients. Sensors 2020, 20, 5827. https://doi.org/10.3390/s20205827

AMA Style

Schellenberger S, Shi K, Michler F, Lurz F, Weigel R, Koelpin A. Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients. Sensors. 2020; 20(20):5827. https://doi.org/10.3390/s20205827

Chicago/Turabian Style

Schellenberger, Sven, Kilin Shi, Fabian Michler, Fabian Lurz, Robert Weigel, and Alexander Koelpin. 2020. "Continuous In-Bed Monitoring of Vital Signs Using a Multi Radar Setup for Freely Moving Patients" Sensors 20, no. 20: 5827. https://doi.org/10.3390/s20205827

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