How to detect radial artery pulse from bioimpedance measurement taken by EVALAD5933EBZ impedance board?

Hello guys,

I have used EVAL-AD5933 EBZ evaluation board to measure noninvasive bio-impedance from the radial artery.

I have configured the frequency sweeping range from 3 kHz to 11 kHz with a sampling rate of 3 Hz. 

Is it possible to detect the radial artery pulse from the device??

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  • Not enough specifics to understand what your setup is with the demo board. What kind of electrodes do you use to connect to the subject's skin and what would be the expected impedance range between your electrodes? Maybe it would make sense not to sweep, just output one frequency, say 10KHz or so, and set the number of increments to zero. Or setup a sweep with some non-zero number of increments, but zero frequency increment. 

    To record a heartbeat waveform, perhaps you want at least 10-20 readings per period, which is typically less than a second, so it would make sense to read every 50 milliseconds or so. You can achieve that by either setting up a sweep or, with some coding, reading repeatedly at a single frequency.

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  • Not enough specifics to understand what your setup is with the demo board. What kind of electrodes do you use to connect to the subject's skin and what would be the expected impedance range between your electrodes? Maybe it would make sense not to sweep, just output one frequency, say 10KHz or so, and set the number of increments to zero. Or setup a sweep with some non-zero number of increments, but zero frequency increment. 

    To record a heartbeat waveform, perhaps you want at least 10-20 readings per period, which is typically less than a second, so it would make sense to read every 50 milliseconds or so. You can achieve that by either setting up a sweep or, with some coding, reading repeatedly at a single frequency.

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