Contactless In-Bed Movement in Various Scales Classification with CW Radar

Lu H, Wenzel M, Steigleder T, Klinger I, Ostgathe C, Koelpin A (2023)

Publication Type: Conference contribution

Publication year: 2023

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 306-309

Conference Proceedings Title: 20th European Radar Conference, EuRAD 2023

Event location: Berlin DE

ISBN: 9782874870743

DOI: 10.23919/EuRAD58043.2023.10289241

Abstract

Continuous wave (CW) radar has been used to detect motions in various scenarios. In this paper, we first present a data-driven method to classify in-bed movement from various scales with CW radar. Data augmentation techniques are used to address the small sample size problem, resulting in a significant improvement of over 10% in accuracy. Three machine learning classifiers, namely random forest, k-nearest neighbor (k-NN), and multilayer perceptron (MLP), are evaluated, with random forest demonstrating the highest accuracy of 81.94% and relative improvement of 22.5% compared to k-NN. The movement sitting up from the bed can be classified with 97.5% accuracy. Additionally, the method can classify two types of movements involving only arm and leg movements, which are not visible to the radar, by detecting small-scale joint movements from the back with an accuracy of 74.8%.

Authors with CRIS profile

Tobias Steigleder Department of Palliative Medicine Isabell Link Medizinische Fakultät Christoph Ostgathe Professur für Palliativmedizin

Additional Organisation(s)

Sonderforschungsbereich 1483/1 Empathokinästhetische Sensorik – Sensortechniken und Datenanalyseverfahren zur empathokinästhetischen Modellbildung und Zustandsbestimmung (EmpkinS)

Involved external institutions

Technische Universität Hamburg-Harburg (TUHH) DE Germany (DE) Brandenburgische Technische Universität Cottbus-Senftenberg (BTU) DE Germany (DE)

How to cite

APA:

Lu, H., Wenzel, M., Steigleder, T., Klinger, I., Ostgathe, C., & Koelpin, A. (2023). Contactless In-Bed Movement in Various Scales Classification with CW Radar. In 20th European Radar Conference, EuRAD 2023 (pp. 306-309). Berlin, DE: Institute of Electrical and Electronics Engineers Inc..

MLA:

Lu, Hui, et al. "Contactless In-Bed Movement in Various Scales Classification with CW Radar." Proceedings of the 20th European Radar Conference, EuRAD 2023, Berlin Institute of Electrical and Electronics Engineers Inc., 2023. 306-309.

BibTeX: Download