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KMID : 1137820170380030137
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의공학회지
2017 Volume.38 No. 3 p.137 ~ p.141
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A Study on Measurement of Capacitive Electrode Motion Artifact
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Lim Yong-Gyu
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Abstract
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The indirect-contact bio-electric measurements using capacitive electrodes show large motion artifacts in comparison with conventional direct-contact measurements. It is necessary to measure the motion artifacts quantitatively, for the researches of reducing the motion artifacts. In this study, a device for quantitative measurement of motion artifacts was built. Using the device, an electrode was rubbed against some cloth(cotton) and the voltage variation of the electrode was measured as motion artifact in several environmental conditions(temperature and relative humidity). The measured waveforms agreed with that expected by the triboelectricity and the prior observations of the motion artifacts. Therefore, the results demonstrated the usability of the measurement system built in this study. The measurement system will be a great contribution to future research for reducing motion artifact.
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KEYWORD
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Capacitive electrode, Indirect-contact ECG, Motion artifact, Triboelectricity
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