Cross-Plane Acquisitions in Electrical Capacitance Volume Tomography

Electrical capacitance tomography (ECT) is a widely used imaging modality to image two-dimensional cross sections of multiphase flows. Recent developments in electrical capacitance volume tomography (ECVT) have made it possible to directly obtain volumetric images from measured data. An ECVT is inst...

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Bibliographic Details
Published in:IEEE sensors journal 2019-10, Vol.19 (19), p.8767-8774
Main Authors: Rasel, Rafiul K., Sines, Joshua N., Marashdeh, Qussai, Teixeira, Fernando L.
Format: Article
Language:English
Subjects:
20 FOSSIL-FUELED POWER PLANTS
Capacitance
Capacitance measurement
Capacitive sensors
Correlation analysis
cross-plane measurements
Electrical capacitance tomography
Electrodes
GENERAL AND MISCELLANEOUS
Ill-conditioned problems (mathematics)
Image acquisition
Image reconstruction
Optimization
process tomography
real time sensing
Tomography
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Summary:Electrical capacitance tomography (ECT) is a widely used imaging modality to image two-dimensional cross sections of multiphase flows. Recent developments in electrical capacitance volume tomography (ECVT) have made it possible to directly obtain volumetric images from measured data. An ECVT is instrumental for obtaining accurate phase hold up information and velocity information that are needed for the optimization of certain flow processes. However, compared to ECT, the high correlation between the measurements in ECVT exacerbates the ill-conditioning of the associated image reconstruction problem. Previous studies have suggested that neglecting mutual capacitance data between the ECVT electrodes located at cross-planes that are well separated along the sensor axis can be done without significantly affecting the reconstructed image. In addition, this may help constrain the ill-conditioning of the reconstruction problem. In this paper, we examine in detail and quantify the effect of reduced cross-plane acquisition strategies for optimizing the image reconstruction and constraining the ill-conditioning of typical ECVT settings.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2019.2923123