abstract
In this paper, we describe the design, implementation and testing of a dry active flexible electrode with a novel interface material for wearable biosignal recording. The new interface material takes the form of a gel and is highly bendable and comfortable on the wearer's skin. A comparison between common Ag/AgCl and our dry active electrode was performed on seven healthy volunteers. The presented prototype was designed for ECG signals but this technology can be modified for other biosignals. Our results show that the new dry active electrode presents better electrical characteristics than the common Ag/AgCl electrode, namely less power-line interference and better response in the signal band. We can conclude that our novel dry active flexible electrode outperforms the traditional Ag/AgCl wet electrode with the advantages of being dry and comfortable. Some future applications of this biodevice are discussed.
subject category
Engineering; Instruments & Instrumentation; Physics
authors
Ribeiro, DMD; Fu, LSS; Carlos, LD; Cunha, JPS
our authors
Lianshe Fu
Researcher
Luís António Ferreira Martins Dias Carlos
Full professoracknowledgements
This work was supported in part by a IEETA grant and FCT project grants CMU-PT/CPS/0046/2008 and MIT-PT/TS-ITS/0059/2008. The associate editor coordinating the review of this paper and approving it for publication was Prof. Gerald Gerlach.