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DSP Embeded Hardware for Non-contact Bio-radar Heart and Respiration Rate Monitoring System  

Kim, Jin-Seung (School of Electronic Engineering, Kookmin University)
Jang, Byung-Jun (School of Electronic Engineering, Kookmin University)
Kim, Ki-Doo (School of Electronic Engineering, Kookmin University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.47, no.4, 2010 , pp. 97-104 More about this Journal
Abstract
In this paper, we provide an embedded type non-contact bio-radar heart and respiration rate monitoring system. We implemented the rate finding algorithm into the embedded system. The high-speed and reliable real-time signal processor is then tested. To avoid null-point data loss problem, we applied quadrature demodulation. Among several other combining techniques, we suggest arctangent demodulation for quadrature channel combining and DSP is used for real-time signal processing. We also suggest DC-offset compensation technique to preserve the wanted DC components of the IQ signals for accurate demodulation while keeping the dynamic range of the ADC lower. Using Texas Instrument C6711 series DSP and external 12Bit ADC, we implemented proper elliptic digital filter and autocorrelation detection algorithm for robust commercial hand held device.
Keywords
Arctangent combining; Embedded system; DC-offset compensation;
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Times Cited By KSCI : 1  (Citation Analysis)
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