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upsidedownlabs / BioAmp-EXG-Pill

BioAmp EXG Pill is a small and elegant Analog Front End (AFE) board for BioPotential signal acquisition.
https://www.crowdsupply.com/upside-down-labs/bioamp-exg-pill
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[QUESTION] Bioelectrical impedance analysis (BIA) #7

Closed dmazzella closed 3 years ago

dmazzella commented 3 years ago

Hi folks, is possible to use BopAmp for bioimpecence analysis?

Thanks, D.

lorforlinux commented 3 years ago

Hey @dmazzella, that is totally possible. BioAmp EXG Pill is basically a sophisticated amplifier for recording signals from the body. You can use the technique used in the OpenBCI ganglion board for BIA.

dmazzella commented 3 years ago

Can you provide an example of use with BioAmp EXG Pill?

Thanks, D.

lorforlinux commented 3 years ago

Hey @dmazzella, Please see the image below for a basic BIA setup. You can create a similar setup where BioAmp EXG Pill be the voltage measuring device connected to an ADC, then you create a constant current source. With these 2 building blocks in place, you have your own BIA setup ready. Also, checkout the OpenBCI ganglion schematic to see how they are using INA and DAC for impedance detection. I hope this helps :)

Source: https://www.researchgate.net/figure/Schematic-representation-of-the-bioelectric-impedance-analysis-BIA-measuring-technique_fig1_301737400