Development on 3D electrical capacitance tomography instrument

Author

Wenli, Fu ; Jinchuang, Zhao ; Jingjie, Lei

Author_Institution

Coll. of Comput. & Electron. & Inf., Guangxi Univ., Nanning, China

fYear

2009

fDate

17-19 June 2009

Firstpage

4486

Lastpage

4488

Abstract

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.

Keywords

capacitance measurement; capacitive sensors; computer graphics; computerised tomography; image reconstruction; iterative methods; optimisation; 3D electrical capacitance tomography instrument; 3D image reconstruction; AC-based capacitance circuit; measuring circuit; optimization iterative reconstruction; stray-immune; two-phase flow visual monitoring; Capacitance measurement; Capacitive sensors; Circuits; Electric variables measurement; Electrical capacitance tomography; Image reconstruction; Image sensors; Instruments; Sensor phenomena and characterization; Sensor systems; electrical capacitance tomography instrument; measuring circuit; reconstruction algorithm; two-phase flow;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference, 2009. CCDC '09. Chinese

Conference_Location

Guilin

Print_ISBN

978-1-4244-2722-2

Electronic_ISBN

978-1-4244-2723-9

Type

conf

DOI

10.1109/CCDC.2009.5192252

Filename

5192252