Development on 3D electrical capacitance tomography instrument
CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference（2009）
摘要
An Electrical capacitance tomography (ECT) system include its sensor, measuring circuit and image reconstruction algorithm is described in this paper. An AC-based capacitance circuit is introduced because it is stray-immune and small capacitance can be measured. The 3-D image is reconstructed from a set of 2-D images which are reconstructed from an optimization iterative reconstruction algorithm. The 3D ECT instrument is used to observe distribution of discrete phase of two-phase flow in closed pipe. The preliminary experimental results demonstrate the distribution of discrete phase of two-phase flow is observed easily. The ECT system has advantage as regards two-phase flow visual monitoring.
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关键词
small capacitance,2-d image,ect system,two-phase flow,electrical capacitance tomography,ect instrument,discrete phase,ac-based capacitance circuit,3-d image,image reconstruction algorithm,electrical capacitance tomography instrument,tomography,capacitive sensors,iterative methods,circuits,iterative reconstruction,capacitance,surface reconstruction,electrodes,image reconstruction,two phase flow,computer graphics,image sensors
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