alexa A Heart Rate Measurement using Bioimpedance Signal Analysis
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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Research Article

A Heart Rate Measurement using Bioimpedance Signal Analysis

D. K. Kamat1, Sanika Dadhi2 and Dr. P. M. Patil3
  1. Asst Prof, Dept of E & TC, Sinhgad Academy of Engg, Pune And Research Scholar, SCOE,Pune,Maharashtra, India
  2. Dept of E & TC, RMD Sinhgad Technical Institutes Campus, Warje, Pune, Maharashtra, India
  3. Director, RMD Sinhgad Technical Institutes Campus, Warje, Pune, Maharashtra, India
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Abstract

Bio-impedance measurement provides non-invasive method for detecting heart rate. The method comprises of impedance converter AD5933 which separates impedance into real and imaginary part using discrete Fourier transform. The 12-bit, 1 MSPS in-built ADC of AD5933 is used for converting analog signal into digital form. The real and imaginary values of the measured bio-impedance signal are processed by ARM cortex processor to obtain a continuous signal. The continuous signal suffers from noise. De-noising of the signal is performed using adaptive threshold algorithm. The bioimpedance signal obtained after de-noising is used to measure heart rate. Four electrodes are used for measurement of bioimpedance signal; two electrodes for injecting current and the other two to capture the voltage signal from human body. Electrodes connected to AD5933 are used as an interface to the human body for injecting current into the human body.

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