An electrical capacitance tomography system for real-time process imaging

Faisal Shehaz

doi:10.1117/12.2576365

21 August 2020 An electrical capacitance tomography system for real-time process imaging

Faisal Shehaz

Proceedings Volume 11510, Applications of Digital Image Processing XLIII; 1151036 (2020) https://doi.org/10.1117/12.2576365
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

Solid contaminants have been found to be a major obstacle in assuring the quality of flow in pipelines. The presence of these substances leads to clogging of pipes that causes serious issues downstream when transporting oil or gas. This paper suggests an Electrical Capacitance Tomography (ECT) system for realtime measurement of solid contaminants in gas pipelines. It consists of a ring of eight electrodes evenly distributed in the circular cross section of the probe. The speed-up enhancement is achieved using a Field Programmable Gate Array (FPGA) for the post-processing part of the system to accelerate the intensive matrix multiplications which are required in the image reconstruction algorithm. Experimental results on field-collected solid contaminants demonstrate the capability of the system to build in real-time two dimensional cross section images of the contaminants while giving an estimated measurement of their concentration. This helps identify the flow regime of the contaminants in the pipeline, which is required to know their flow characteristics which helps mitigating their formation. Experimental results indicate that using Altera’s Stratix V FPGA, 305 KLEs are required to achieve image reconstruction throughput of up to 3,233 frames/s for image size of 64 x 64 pixels. Simulation results were also conducted using finite element method solver to assess the ECT probe for various image reconstruction algorithms (i.e Linear back projection, Landweber, and modified Landweber algorithms). The results indicate a good matching with the experimental results.

Citation Download Citation

Faisal Shehaz "An electrical capacitance tomography system for real-time process imaging", Proc. SPIE 11510, Applications of Digital Image Processing XLIII, 1151036 (21 August 2020); https://doi.org/10.1117/12.2576365

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