دورية أكاديمية
Noise Model of Capacitive and Textile Capacitive Noncontact Electrodes for Bioelectric Applications.
| العنوان: | Noise Model of Capacitive and Textile Capacitive Noncontact Electrodes for Bioelectric Applications. |
|---|---|
| المؤلفون: | Asl SN, Oehler M, Schilling M |
| المصدر: | IEEE transactions on biomedical circuits and systems [IEEE Trans Biomed Circuits Syst] 2018 Aug; Vol. 12 (4), pp. 851-859. Date of Electronic Publication: 2018 Jun 13. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: IEEE Country of Publication: United States NLM ID: 101312520 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1940-9990 (Electronic) Linking ISSN: 19324545 NLM ISO Abbreviation: IEEE Trans Biomed Circuits Syst Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: New York, NY : IEEE, c2007- |
| مواضيع طبية MeSH: | Electric Capacitance* , Electrodes*, Noise |
| مستخلص: | In this paper, a comprehensive model for the electronic noise properties and frequency-dependent responses of printed circuit board (PCB)-based as well as textile noncontact capacitive electrodes is presented. For bioelectric diagnostics, noncontact capacitive electrodes provide an interesting alternative to classical galvanically coupled electrodes, since such a low-cost diagnostic system can be applied without preparation time and in mobile wireless environments. For even higher user comfort, textile capacitive electrodes are preferable. This paper provides a thorough study of the influence of the electrical components of capacitive electrodes and textile capacitive electrodes, as well as their surface area and circumferences on the resulting noise properties of the electrode by independently measuring the corresponding noise spectra. Consequently, the equivalent noise model is developed. The most important noise source is the high input bias resistance, which, in combination with the involved capacitance, results in an apparent $1/f^2$-power noise spectrum. By comparing the noise measurements with the noise model of the electrode, we conclude that the surface of the electrode contributes to an additional $1/f$ -power noise in the noise spectrum. We also found that the highest possible coupling capacitance is most favorable for low-noise behavior. Therefore, electrodes with electrically conducting fabric surfaces are investigated. Due to this, it is possible to enlarge the surface of the electrode and maintain a small distance between the body and the surface of the electrode. We show that with the use of textile capacitive electrodes, it is possible to reduce the noise characteristics considerably. Our findings in this paper provide a necessary source for further optimization of capacitive electrodes for bioelectric measurement applications. |
| تواريخ الأحداث: | Date Created: 20180712 Date Completed: 20190311 Latest Revision: 20190311 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1109/TBCAS.2018.2832287 |
| PMID: | 29994266 |
| قاعدة البيانات: | MEDLINE |
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