Machine Learning-based Joint Vital Signs and Occupancy Detection with IR-UWB Sensor

• Published in: IEEE sensors journal 2023-04, Vol.23 (7), p.1-1
• Main Authors: Paulson Eberechukwu, N, Park, Hyunwoo, Lee, Jaebok, Kim, Sunwoo
• Format: Article
• Language: English
• Subjects: Algorithms; Artificial neural networks; Classification; Classifiers; Feature extraction; IR-UWB sensor; Machine learning; Monitoring; Noise reduction; occupant detection; Radar antennas; Sensors; Signal to noise ratio; Training; Ultrawideband; vital signs monitoring
• ISSN: 1530-437X; 1558-1748
• DOI: 10.1109/JSEN.2023.3247728

This paper proposes a machine learning (ML)-based joint vital signs (VS) and occupancy detection (OD) with an impulse radio-ultra wide-band (IR-UWB) sensor. Works that have been done on VS or OD development using an IR-UWB are related to how VS works. In the related experiments performed, the OD and state of individuals were not sufficiently verified, and the methods were computationally complex. Issues related to the use of ML for joint VSOD have also not been studied in the literature. Extensive experimental scenarios involving the application of an ML-based classifier for human OD and VS classification, which we extended towards three sub-scenarios, were evaluated. We formulated a solution for VS estimation, which was aligned so that each network input sequence received signal corresponding to respective VS over different scenarios. The performance of the proposal was evaluated with other competing ML-based classification algorithms. Compared to other techniques, our proposed DNN-based classifier achieved the best results, and it also offers benefits over other algorithms, such as not needing to extract features from the data.