Removing harmonic power line interference from biopotential signals in low cost acquisition systems

Authors:
Márcio H. Costa;Maurício C. Tavares
Affiliations:
Department of Electrical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil;Biomedical Engineering Group, Catholic University of Pelotas, 96010-000 Pelotas, RS, Brazil
Venue:
Computers in Biology and Medicine
Year:
2009

Citing 6
Cited 0

Characterization and elimination of AC noise in electrocardiograms: a comparison of digital filtering methods

Computers and Biomedical Research
A new adaptive scheme for ECG enhancement

Signal Processing
DSP Processor Fundamentals: Architectures and Features

DSP Processor Fundamentals: Architectures and Features
ECG baseline wander and powerline interference reduction using nonlinear filter bank

Signal Processing
A new vision on the averaging technique for the estimation of non-stationary Brainstem Auditory-Evoked Potentials: Application of a metaheuristic method

Computers in Biology and Medicine
Enhancing echo cancellation via estimation of delay

IEEE Transactions on Signal Processing

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper presents a new proposal of a very low cost and highly efficient interference canceller to be applied to biomedical signals. The power line reference is obtained from analog to digital conversion while higher harmonics are mathematically estimated by means of trigonometric relations. These signals are processed by an adaptive algorithm in order to suppress harmonic interference. Biomedical acquisition systems that incorporate a conventional adaptive canceller, whose reference signal is sampled from power line, can be easily modified to improve interference suppression without hardware modifications. Real application examples are supplied in order to demonstrate its usefulness in electroencephalographic, electrocardiographic and auditory evoked potential signals.