Non Ideal ECG Measurement Through Electrode-tissue Interfaces

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Published: Dec 28, 2021
Keywords:
Electrode Potential Electrode-tissue Interfaces Half-cell potential

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Panlop Pantuprecharat
Department of Electronic Engineering, Mahanakorn Institute of Innovation (MII) Faculty of Engineering, Mahanakorn University of Technology

Abstract

This paper presents the non-ideal of ECG signal measurement which is caused from the common mode noise,  half-cell potential and tissue resistance. The problems are introduced that arise from measuring the small biological signals using the electrode probes. It is described in the form of a tissue-electrode interface of equivalent circuit model with the front-end amplifier circuit. For the simulation using the various parameters compared with the distortion of the signal, the results found that the measured voltage of common mode noise is in the range of ±250 mV. The half-cell potential is in the range of ±150 mV and tissue resistance values does not exceed the input impedance of the front-end amplifier also make the circuit distortion less than 1%.

Article Details

Issue
Vol. 24 No. 2 (2021): July - December 2021
Section
Research Articles

Copyright @2021 Engineering Transactions 

Faculty of Engineering and Technology

Mahanakorn University of Technology

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