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

被引：31

作者：

Costa, Marcio H. ^{[1
]}

Tavares, Mauricio C. ^{[2
]}

机构：

[1] Univ Fed Santa Catarina, Dept Elect Engn, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Catolica Pelotas, Biomed Engn Grp, BR-96010000 Pelotas, RS, Brazil

来源：

COMPUTERS IN BIOLOGY AND MEDICINE | 2009年 / 39卷 / 06期

关键词：

Adaptive filtering; LMS; Noise cancelling; Harmonic suppression; Evoked potential; Adaptive noise canceller; EVOKED-POTENTIALS; ECG; NOISE; CANCELLATION; REDUCTION; RESPONSES; FILTERS;

D O I：

10.1016/j.compbiomed.2009.03.004

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：519 / 526

页数：8

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