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Circuits mixtes reconfigurables appliqués à la mesure de signaux biomédicaux: réjection de l'interférence de mode commun

Abstract : Power line interference (50 or 60 Hz) during biopotentials signal measurements is a quite common problem. It must be carefully dealed with when high quality results are required for more exact diagnosis concerning a certain phyisiological function behavior. Paticularly if these signals interpretation is performed by digital systems, it becomes essential that power line interferences be mitigated in a way that the critical points of the biopotential signal waveform are precisely obtained. Measuring resetable mixed circuits allow a new configuration after the manufacturing process, in the direction of tunning themselves to a specific use. Therefore, such as circuits are suitable for projects in which their specifications must be changed according to the sensors in use and to the measured signal properties In this work, it is proposed a resetable mixed circuit for biopotential signal measurements, in special the electrocardiogram (ECG), electroencefalogram (EEG), electromiogram (EMG) and electroculogram (EOG) signals. In the circuit, it is included a block which dynamically perform the compensations instability that exist in the impedances of the electrodes, reducing the common mode interference due to the power network-pacient coupling.
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https://pastel.archives-ouvertes.fr/pastel-00000691
Contributor : Ecole Télécom Paristech <>
Submitted on : Thursday, September 23, 2004 - 8:00:00 AM
Last modification on : Friday, July 31, 2020 - 10:44:07 AM
Long-term archiving on: : Thursday, September 30, 2010 - 5:58:22 PM

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Ivan de Souza. Circuits mixtes reconfigurables appliqués à la mesure de signaux biomédicaux: réjection de l'interférence de mode commun. domain_other. Télécom ParisTech, 2003. English. ⟨pastel-00000691⟩

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