Improving SNR and Sensitivity for Low-Coupling EMT Sensors
Electromagnetic tomography (EMT), also known as magnetic inductance tomography (MIT) is a tomographic modality widely employed in process industry and biomedical applications. In particular, this technique plays an important role in imaging metallic objects since it can produce conductivity and perm...
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| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Open Journal of Instrumentation and Measurement |
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| Online Access: | https://ieeexplore.ieee.org/document/10221720/ |
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| author | Zili Zhang Ziqi Chen Jianxin Xu Wuliang Yin |
| author_facet | Zili Zhang Ziqi Chen Jianxin Xu Wuliang Yin |
| author_sort | Zili Zhang |
| collection | DOAJ |
| description | Electromagnetic tomography (EMT), also known as magnetic inductance tomography (MIT) is a tomographic modality widely employed in process industry and biomedical applications. In particular, this technique plays an important role in imaging metallic objects since it can produce conductivity and permeability distributions in the region of interest. An EMT system consists of a coil array, a data acquisition system, and an imaging reconstruction computer. Coils are used to generate electromagnetic field which interacts with the objects under investigation and measure the induced voltages. Conventionally, coils with sufficient inductance coupling (considerable number of turns or dimensions) are used to achieve high sensitivity and good SNR performance. However, this poses limitations for some applications, such as high-temperature applications and small-scale facilities. In high-temperature applications such as in steel or copper production processes, coils of the large number of turns are more likely to be damaged due to the breakdown of insulating materials between the turns, resulting in measuring errors. Besides, EMT applied in small-scale facility requires sensors with reduced dimensions, which results in weak magnetic coupling and lower SNR. In order to address these issues, this article proposes a method to transform the impedance and hence increase the sensor signal level through designing boosting transformers. Simulation and experimental results suggest that this increases the system SNR and image stability. |
| format | Article |
| id | doaj-art-9908ea8db8c643048cf3817094b7d6fe |
| institution | Kabale University |
| issn | 2768-7236 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Instrumentation and Measurement |
| spelling | doaj-art-9908ea8db8c643048cf3817094b7d6fe2024-12-11T00:07:15ZengIEEEIEEE Open Journal of Instrumentation and Measurement2768-72362023-01-01211110.1109/OJIM.2023.330565810221720Improving SNR and Sensitivity for Low-Coupling EMT SensorsZili Zhang0https://orcid.org/0009-0007-5284-1724Ziqi Chen1https://orcid.org/0000-0002-8206-5224Jianxin Xu2https://orcid.org/0000-0001-5248-6848Wuliang Yin3https://orcid.org/0000-0001-5927-3052Electronic and Electrical Engineering Department, The University of Manchester, Manchester, U.K.Electronic and Electrical Engineering Department, The University of Manchester, Manchester, U.K.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, ChinaElectronic and Electrical Engineering Department, The University of Manchester, Manchester, U.K.Electromagnetic tomography (EMT), also known as magnetic inductance tomography (MIT) is a tomographic modality widely employed in process industry and biomedical applications. In particular, this technique plays an important role in imaging metallic objects since it can produce conductivity and permeability distributions in the region of interest. An EMT system consists of a coil array, a data acquisition system, and an imaging reconstruction computer. Coils are used to generate electromagnetic field which interacts with the objects under investigation and measure the induced voltages. Conventionally, coils with sufficient inductance coupling (considerable number of turns or dimensions) are used to achieve high sensitivity and good SNR performance. However, this poses limitations for some applications, such as high-temperature applications and small-scale facilities. In high-temperature applications such as in steel or copper production processes, coils of the large number of turns are more likely to be damaged due to the breakdown of insulating materials between the turns, resulting in measuring errors. Besides, EMT applied in small-scale facility requires sensors with reduced dimensions, which results in weak magnetic coupling and lower SNR. In order to address these issues, this article proposes a method to transform the impedance and hence increase the sensor signal level through designing boosting transformers. Simulation and experimental results suggest that this increases the system SNR and image stability.https://ieeexplore.ieee.org/document/10221720/Boosting transformerelectromagnetic tomography (EMT)online imagingsensor with reduced dimensions |
| spellingShingle | Zili Zhang Ziqi Chen Jianxin Xu Wuliang Yin Improving SNR and Sensitivity for Low-Coupling EMT Sensors IEEE Open Journal of Instrumentation and Measurement Boosting transformer electromagnetic tomography (EMT) online imaging sensor with reduced dimensions |
| title | Improving SNR and Sensitivity for Low-Coupling EMT Sensors |
| title_full | Improving SNR and Sensitivity for Low-Coupling EMT Sensors |
| title_fullStr | Improving SNR and Sensitivity for Low-Coupling EMT Sensors |
| title_full_unstemmed | Improving SNR and Sensitivity for Low-Coupling EMT Sensors |
| title_short | Improving SNR and Sensitivity for Low-Coupling EMT Sensors |
| title_sort | improving snr and sensitivity for low coupling emt sensors |
| topic | Boosting transformer electromagnetic tomography (EMT) online imaging sensor with reduced dimensions |
| url | https://ieeexplore.ieee.org/document/10221720/ |
| work_keys_str_mv | AT zilizhang improvingsnrandsensitivityforlowcouplingemtsensors AT ziqichen improvingsnrandsensitivityforlowcouplingemtsensors AT jianxinxu improvingsnrandsensitivityforlowcouplingemtsensors AT wuliangyin improvingsnrandsensitivityforlowcouplingemtsensors |