Title :
Microwave measurement of heart beat applied to daily life
Author :
Ito, N. ; Mase, A. ; Kobayashi, A. ; Komada, Y. ; Kogi, Y. ; Sakata, E. ; Shimazu, H.
Author_Institution :
Sci. & Technol. Center for Cooperative Res., Kyushu Univ., Kasuga, Japan
Abstract :
Microwave reflectometric measurement is applied to diagnose human vital signal. The reflectometer signal is processed by a quadrature phase detector in order to obtain both phase and amplitude components of the signal. The phase component is analyzed by using fast-Fourier transform and wavelet transform to evaluate the frequency spectrum of the heartbeat and respiration. In this report, we focus on some challenges such as overnight monitoring and the performance during driving vehicle. The system using Automatic Gain Control (AGC) and integration of reflectometry system are also discussed.
Keywords :
automatic gain control; cardiology; fast Fourier transforms; medical signal processing; microwave reflectometry; patient diagnosis; wavelet transforms; automatic gain control; fast Fourier transform; heart beat microwave measurement; heartbeat frequency spectrum; human vital signal diagnosis; microwave reflectometric measurement; quadrature phase detector; reflectometer signal; respiration frequency spectrum; signal amplitude component; signal phase component; wavelet transform; Decision support systems; Gain control; Heart beat; Microwave measurements; Monitoring; Reflectometry; Transforms;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7366-3
DOI :
10.1109/ICEAA.2010.5653066
