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Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity
This article introduces a two-electrode ground-free electrocardiogram (ECG) with minimal hardware complexity, which is ideal for wearable battery-powered devices. The main issue of ground-free measurements is the presence of noise. Therefore, noise suppression methods that can be employed for a two-...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219345/ https://www.ncbi.nlm.nih.gov/pubmed/32331326 http://dx.doi.org/10.3390/s20082386 |
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author | Babusiak, Branko Borik, Stefan Smondrk, Maros |
author_facet | Babusiak, Branko Borik, Stefan Smondrk, Maros |
author_sort | Babusiak, Branko |
collection | PubMed |
description | This article introduces a two-electrode ground-free electrocardiogram (ECG) with minimal hardware complexity, which is ideal for wearable battery-powered devices. The main issue of ground-free measurements is the presence of noise. Therefore, noise suppression methods that can be employed for a two-electrode ECG acquisition system are discussed in detail. Experimental measurements of a living subject and patient simulator are used to investigate and compare the performance of the three proposed methods utilizing the ADS1191 analogue front-end for biopotential measurements. The resulting signals recorded for the simulator indicate that all three methods should be suitable for suppressing power-line noise. The Power Spectral Density (PSD) of the signals measured for a subject exhibits differences across methods; the signal power at 50 Hz is −28, −24.8, and −26 dB for the first, second, and third method, respectively. The digital postprocessing of measured signals acquired a high-quality ECG signal comparable to that of three-electrode sensing. The current consumption measurements demonstrate that all proposed two-electrode ECG solutions are appropriate as a battery-powered device (current consumption < 1.5 mA; sampling rate of 500 SPS). The first method, according to the results, is considered the most effective method in the suppression of power-line noise, current consumption, and hardware complexity. |
format | Online Article Text |
id | pubmed-7219345 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72193452020-05-22 Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity Babusiak, Branko Borik, Stefan Smondrk, Maros Sensors (Basel) Article This article introduces a two-electrode ground-free electrocardiogram (ECG) with minimal hardware complexity, which is ideal for wearable battery-powered devices. The main issue of ground-free measurements is the presence of noise. Therefore, noise suppression methods that can be employed for a two-electrode ECG acquisition system are discussed in detail. Experimental measurements of a living subject and patient simulator are used to investigate and compare the performance of the three proposed methods utilizing the ADS1191 analogue front-end for biopotential measurements. The resulting signals recorded for the simulator indicate that all three methods should be suitable for suppressing power-line noise. The Power Spectral Density (PSD) of the signals measured for a subject exhibits differences across methods; the signal power at 50 Hz is −28, −24.8, and −26 dB for the first, second, and third method, respectively. The digital postprocessing of measured signals acquired a high-quality ECG signal comparable to that of three-electrode sensing. The current consumption measurements demonstrate that all proposed two-electrode ECG solutions are appropriate as a battery-powered device (current consumption < 1.5 mA; sampling rate of 500 SPS). The first method, according to the results, is considered the most effective method in the suppression of power-line noise, current consumption, and hardware complexity. MDPI 2020-04-22 /pmc/articles/PMC7219345/ /pubmed/32331326 http://dx.doi.org/10.3390/s20082386 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Babusiak, Branko Borik, Stefan Smondrk, Maros Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title | Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title_full | Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title_fullStr | Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title_full_unstemmed | Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title_short | Two-Electrode ECG for Ambulatory Monitoring with Minimal Hardware Complexity |
title_sort | two-electrode ecg for ambulatory monitoring with minimal hardware complexity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219345/ https://www.ncbi.nlm.nih.gov/pubmed/32331326 http://dx.doi.org/10.3390/s20082386 |
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