An Interference Suppression Method for Non-Contact Bioelectric Acquisition
For non-contact bioelectrical acquisition, a new interference suppression method, named ‘noise neutralization method’, is proposed in this paper. Compared with the traditional capacitive driven-right-leg method, the proposed method is characterized with that there is an optimal g...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/2/293 |
| _version_ | 1798035383247699968 |
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| author | Yue Tang Ronghui Chang Limin Zhang Feng Yan |
| author_facet | Yue Tang Ronghui Chang Limin Zhang Feng Yan |
| author_sort | Yue Tang |
| collection | DOAJ |
| description | For non-contact bioelectrical acquisition, a new interference suppression method, named ‘noise neutralization method’, is proposed in this paper. Compared with the traditional capacitive driven-right-leg method, the proposed method is characterized with that there is an optimal gain to achieve the minimum interference output whatever for the electrode interface impedance mismatch caused by body motion and is more effective for smaller reference electrode areas. The performance of traditional capacitive driven-right-leg method is analyzed and the difficulty to suppress interference in the case of the interface impedance mismatch is pointed out. Therefore, a noise neutralization method is proposed by applying the reference electrode and a 50 Hz band-pass filter to obtain the interference of the human body and adapting the gains to neutralize the interference inputs of two acquisition electrodes and achieve the minimum interference output. The performance of the proposed method is theoretically analyzed and verified by the experiment results, which shows that the proposed method has similar performance to that of the traditional capacitive driven-right-leg method with electrode interface impedance match, while has better interference suppression ability with electrode interface impedance mismatch caused by body motion. It is suggested that the proposed method can be preferred in the case of limited reference electrode area or interface impedance mismatch. |
| first_indexed | 2024-04-11T20:57:19Z |
| format | Article |
| id | doaj.art-55908c71d39a4a74bc842ab3bdbef4b8 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T20:57:19Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-55908c71d39a4a74bc842ab3bdbef4b82022-12-22T04:03:38ZengMDPI AGElectronics2079-92922020-02-019229310.3390/electronics9020293electronics9020293An Interference Suppression Method for Non-Contact Bioelectric AcquisitionYue Tang0Ronghui Chang1Limin Zhang2Feng Yan3School of Electronic Science and Engineering, Nanjing University, Nanjing 210046, ChinaSchool of Electronic Science and Engineering, Nanjing University, Nanjing 210046, ChinaSchool of Electronic Science and Engineering, Nanjing University, Nanjing 210046, ChinaSchool of Electronic Science and Engineering, Nanjing University, Nanjing 210046, ChinaFor non-contact bioelectrical acquisition, a new interference suppression method, named ‘noise neutralization method’, is proposed in this paper. Compared with the traditional capacitive driven-right-leg method, the proposed method is characterized with that there is an optimal gain to achieve the minimum interference output whatever for the electrode interface impedance mismatch caused by body motion and is more effective for smaller reference electrode areas. The performance of traditional capacitive driven-right-leg method is analyzed and the difficulty to suppress interference in the case of the interface impedance mismatch is pointed out. Therefore, a noise neutralization method is proposed by applying the reference electrode and a 50 Hz band-pass filter to obtain the interference of the human body and adapting the gains to neutralize the interference inputs of two acquisition electrodes and achieve the minimum interference output. The performance of the proposed method is theoretically analyzed and verified by the experiment results, which shows that the proposed method has similar performance to that of the traditional capacitive driven-right-leg method with electrode interface impedance match, while has better interference suppression ability with electrode interface impedance mismatch caused by body motion. It is suggested that the proposed method can be preferred in the case of limited reference electrode area or interface impedance mismatch.https://www.mdpi.com/2079-9292/9/2/293interference suppressionnon-contact electrodeimpedance mismatchdriven-right-legelectrocardiogrambioelectric acquisition |
| spellingShingle | Yue Tang Ronghui Chang Limin Zhang Feng Yan An Interference Suppression Method for Non-Contact Bioelectric Acquisition Electronics interference suppression non-contact electrode impedance mismatch driven-right-leg electrocardiogram bioelectric acquisition |
| title | An Interference Suppression Method for Non-Contact Bioelectric Acquisition |
| title_full | An Interference Suppression Method for Non-Contact Bioelectric Acquisition |
| title_fullStr | An Interference Suppression Method for Non-Contact Bioelectric Acquisition |
| title_full_unstemmed | An Interference Suppression Method for Non-Contact Bioelectric Acquisition |
| title_short | An Interference Suppression Method for Non-Contact Bioelectric Acquisition |
| title_sort | interference suppression method for non contact bioelectric acquisition |
| topic | interference suppression non-contact electrode impedance mismatch driven-right-leg electrocardiogram bioelectric acquisition |
| url | https://www.mdpi.com/2079-9292/9/2/293 |
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