1 July 2001 Sensitivity analysis of different sensing strategies for electrical impedance imaging of two-phase flows
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J. of Electronic Imaging, 10(3), (2001). doi:10.1117/1.1380201
Due to practical considerations, electrical fields and other soft field sensing techniques are convenient to use in process tomography applications. However, most of the reconstruction algorithms were first developed for hard sensing fields that approximate soft fields only in the situation of low electrical contrast. A less restrictive reconstruction method can be developed by refining the qualitative images of a direct imaging probe, but the boundary measurements must be sensitive to changes in the distribution of the electrical properties of the flow. This paper addresses the issue and presents a sensitivity analysis of different excitation strategies and their applicability in a reconstruction algorithm such as described above. Results confirm that classical excitation strategies suffer from a major lack of sensitivity and that new ones must be developed, possibly based on the optimization of the excitation profiles or on multisensing techniques.
T. P. Figueroa, Paulo Seleghim, "Sensitivity analysis of different sensing strategies for electrical impedance imaging of two-phase flows," Journal of Electronic Imaging 10(3), (1 July 2001). http://dx.doi.org/10.1117/1.1380201



Numerical simulations

Analytical research

Reconstruction algorithms

Standards development

Algorithm development


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