Capacitive driven-right-leg circuit design

Capacitive electrodes allow to pick-up biopotentials through a dielectric layer, without using electrolytes. However, this technique is vulnerable to electric-field interference, mainly to common mode voltages produced by the 50 Hz power-line. A fully Capacitive Driven Right Leg (CDRL) circuit is pr...

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Detalles Bibliográficos
Autores principales: Haberman, Marcelo Alejandro, Spinelli, Enrique Mario, García, Pablo Andrés, Guerrero, Federico Nicolás
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ingeniería Electrónica
Capacitive electrodes
Insulating electrodes
Common-mode interference
Driven-right-leg circuit
Non-contact measurements
Biopotential
Biomedical
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127572
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127572
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería Electrónica
Capacitive electrodes
Insulating electrodes
Common-mode interference
Driven-right-leg circuit
Non-contact measurements
Biopotential
Biomedical
spellingShingle Ingeniería Electrónica
Capacitive electrodes
Insulating electrodes
Common-mode interference
Driven-right-leg circuit
Non-contact measurements
Biopotential
Biomedical
Haberman, Marcelo Alejandro
Spinelli, Enrique Mario
García, Pablo Andrés
Guerrero, Federico Nicolás
Capacitive driven-right-leg circuit design
topic_facet Ingeniería Electrónica
Capacitive electrodes
Insulating electrodes
Common-mode interference
Driven-right-leg circuit
Non-contact measurements
Biopotential
Biomedical
description Capacitive electrodes allow to pick-up biopotentials through a dielectric layer, without using electrolytes. However, this technique is vulnerable to electric-field interference, mainly to common mode voltages produced by the 50 Hz power-line. A fully Capacitive Driven Right Leg (CDRL) circuit is proposed to reduce the patient common mode voltage vCM. The design of this circuit takes into account several factors as electrode impedance, stray coupling capacitances and amplifier transfer function response. All these parameters are addressed to ensure the circuit’s stability in most biopotential acquisition scenarios. Monte Carlo analyses were performed to find the worst conditions, resulting in a maximum CDRL gain between 70 and 80 dB. The CDRL was implemented as an independent block that can be used for different applications such as ECG, EMG or EEG. Several experimental results are presented, showing good quality recordings even using SE amplifiers, an appropriate approach for multichannel acquisition systems.
format Articulo
Articulo
author Haberman, Marcelo Alejandro
Spinelli, Enrique Mario
García, Pablo Andrés
Guerrero, Federico Nicolás
author_facet Haberman, Marcelo Alejandro
Spinelli, Enrique Mario
García, Pablo Andrés
Guerrero, Federico Nicolás
author_sort Haberman, Marcelo Alejandro
title Capacitive driven-right-leg circuit design
title_short Capacitive driven-right-leg circuit design
title_full Capacitive driven-right-leg circuit design
title_fullStr Capacitive driven-right-leg circuit design
title_full_unstemmed Capacitive driven-right-leg circuit design
title_sort capacitive driven-right-leg circuit design
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/127572
work_keys_str_mv AT habermanmarceloalejandro capacitivedrivenrightlegcircuitdesign
AT spinellienriquemario capacitivedrivenrightlegcircuitdesign
AT garciapabloandres capacitivedrivenrightlegcircuitdesign
AT guerrerofedericonicolas capacitivedrivenrightlegcircuitdesign
bdutipo_str Repositorios
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