An IEEE 802.15.4z-Compliant IR-UWB Radar System for In-Cabin Monitoring

Abstract

This paper demonstrates an IEEE 802.15.4z compliant Impulse Radio Ultra-Wideband (IR-UWB) radar system for in-cabin monitoring for automotive applications. The presented system demonstrates three in-cabin use cases running in real-time: occupancy detection, breathing rate estimation, and gesture detection. The IR-UWB radar system detects occupancy and estimates the breathing rates of persons sitting in a car's driver and/or front passenger seat. Furthermore, the radar system detects if the passenger is performing a pre-defined gesture. The experimental results demonstrate the effectiveness of the system in a real-time platform, confirming its potential for enhancing automotive safety and comfort. In the presented demo, we achieve a false alarm probability of lower than 10(-3), a breathing rate accuracy of less than 1 beat per minute (bpm), and gesture detection accuracy of more than 90%.