Respiration Monitoring of All Occupants in a Vehicle Using Time-Division Multiplexing FMCW Radar Based on Metasurface Technology

• Published in: IEEE transactions on microwave theory and techniques Vol. 72; no. 8; pp. 4960 - 4974
• Main Authors: Kang, Wei, Zhou, Chenwei, Wu, Wen
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna arrays; Clutter; Continuous radiation; Continuous wavelet transforms; Frequency modulation; Frequency modulation continuous wave (FMCW); Human subjects; in-vehicle multitarget respiration monitoring; Lens antennas; Linear polarization; metasurface lens antenna; Metasurfaces; Monitoring; Phased arrays; Polarization; polarized multibeam; Radar antennas; Radar beams; Radar equipment; Respiration; Respiratory rate; Retroreflection; Seat belts; Signal monitoring; Signal reflection; Tags; Technology assessment; Time division multiplexing

Noninvasive respiration monitoring of the driver and all passengers in a vehicle simultaneously with microwave radar technology is crucial for assessing their physiological status. To achieve this, the radar system must be able to monitor and distinguish the respiration signals of multiple closely s...