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《Instrument Technique and Sensor》 2009-01
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Research on Technology of Image Reconstruction in Two-phase Flow ECT

GUO Xuan,BI Wei-hong(College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China)  
The electrical capacitance tomography(ECT) system is known as the best measuring method at present.It can reconstruct cross-sectional phase distribution images of the pipeline through which two-phase flow runs.After proposing the mathematical formulation of capacitance transducers,the paper built the mathematical and finite element mode1 of the capacitance sensitivity field distribution respectively of 12 electrode ECT system.Furthermore,it analyzed the theory and the constitution of ECT system and the computing method of the sensitivity field.Then it realized the simulation of the sensitivity field and studied the rules of the distribution of the sensitivity field by FEM.Based on the sensitivity field,the reconstruction image of ECT was eventually got by the gray image reconstruction method,which provided the theoretical base for online two-phase flow detector.
【CateGory Index】: TP391.41
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