CW Radar Sensor For Patient’s Biological Functions Monitoring

• Main Author: Jakub Richter
• Other Authors: Chao-Hsiung Tseng
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/41778238039752786195

碩士 === 國立臺灣科技大學 === 電子工程系 === 105 === The goal of this work is to design continuous-wave radar sensor for patient’s biological functions such as respiration and heartbeat to be monitored, up to 1.5 m distance and use signal processing to compute measured results of some patient’s condition observation. The kernel of our radar system is radar chip BGT24MTR11 which include all necessary high frequency components. Therefor we only need to design the antenna, circuit to process in-phase and quadrature signals to be acquired by computer for signal processing, and supply voltage and protection of whole circuit. High frequency signal is tuned to f=24.2 GHz. The radar chip BGT24MTR11 has to be set up by command though SPI bus. For this purpose and for acquisition data to computer, board Arduino UNO is used. Arduino UNO includes SPI pins and analog input pins with 10-bits resolution. Finally, graphical user interphase in Matlab was used for its suitability and capability on signal processing, plotting in-phase and quadrature signals, computation for fast Fourier transform to get spectrum and plot the said spectrum to see frequencies of heartbeat and respiration to discuss results.