Skin-electrode impedance measurement during ECG acquisition: method's validation

20th Argentinean Bioengineering Society Congress

物理学;生物科学

Casal, Leonardo^1 ; Mura, Guillermo La^1

Universidad Nacional de San Martin, Escuela de Ciencia y Tecnologia, San-Martin, Buenos Aires, Argentina^1

关键词: Different frequency;    Electrode impedance;    Excitation currents;    Impedance measurement;    Instrumentation amplifier;    Skin-electrode impedance;    Square wave excitation;    Test circuit;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/705/1/012006/pdf
DOI  :  10.1088/1742-6596/705/1/012006

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Skm-electrode impedance measurement can provide valuable information prior. dunng and post electrocardiographic (ECG) or electroencephalographs (EEG) acquisitions. In this work we validate a method for skm-electrode impedance measurement using test circuits with known resistance and capacitor values, at different frequencies for injected excitation current. Finally the method is successfully used for impedance measurement during ECG acquisition on a subject usmg 125 Hz and 6 nA square wave excitation signal at instrumentation amplifier mput. The method can be used for many electrodes configuration.