Radar Based Human Vital Sign Detection In Cars
A System Analysis
S. Neji (TU Delft - Electrical Engineering, Mathematics and Computer Science)
R.P.C. Kooij (TU Delft - Electrical Engineering, Mathematics and Computer Science)
F. Fioranelli – Mentor (TU Delft - Microwave Sensing, Signals & Systems)
Marco Spirito Alexander Yarovyi – Graduation committee member (TU Delft - Microwave Sensing, Signals & Systems)
C. Varon – Graduation committee member (TU Delft - Signal Processing Systems)
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Abstract
This thesis analyses different radar systems for sensing chest movement to detect human presence inside a car. The detection in this thesis is limited to sensing breathing rate, although heartbeat detection is considered a possibility. A comparison is made between CW-, FMCW-, pulsed- and UWB pulsed radar. UWB pulsed radar was chosen to be a suitable technology for this application. As a benchmark, the Xethru X4 SoC by Novelda is used. The parameters and the working of Xethru X4 are investigated. A suitable antenna for Xethru is designed and simulated. Different detection techniques are discussed. The feasibility of the Xethru X4 is tested by means of calculations in different settings. Based on these tests, the Xethru X4 is evaluated and concluded to be suitable for detecting human presence inside a car by means of vital sign detection.