DocumentCode :
2671177
Title :
Design of ERT/ECT dual-modality process tomography system
Author :
Xuehui, Zhang ; Huaxiang, Wang ; Yongbo, He
fYear :
2008
fDate :
16-18 July 2008
Firstpage :
361
Lastpage :
364
Abstract :
With the development of multiphase flow, real-time tomography system sensitive to various electrical parameters is required, i.e. multi-modal real-time tomography system. From the perspective of the electromagnetic field theory, electrical resistance tomography (ERT) and electrical capacitance tomography (ECT) are classified to a same mathematical model. Composite sensor array and hardware circuit featured with topological structure for the ERT/ECT dual-modality system are designed. The system can run in single modality or dual modality, fusion of ERT and ECT is realized primarily. Some key problems in hardware are discussed in this paper, including the design of C/V and R/V converted circuits, as well as how to design analog switches to reduce the coupling between dual-modal sensors. Reconstruction images based on Landweber iterative algorithm are in agreement with experiments and the system is verified stable and flexible.
Keywords :
flow measurement; image reconstruction; iterative methods; multiphase flow; sensor fusion; tomography; Landweber iterative algorithm; analog switches; composite sensor array; dual-modality process tomography system; electrical capacitance tomography; electrical resistance tomography; electromagnetic field theory; image reconstruction; mathematical model; multimodal real-time tomography system; multiphase flow; Circuits; Electric resistance; Electrical capacitance tomography; Electromagnetic field theory; Hardware; Image converters; Mathematical model; Real time systems; Sensor arrays; Sensor systems; Dual Modality; Electrical Capacitance Tomography; Electrical Resistance Tomography; Fusion;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
Type :
conf
DOI :
10.1109/CHICC.2008.4605797
Filename :
4605797
Link To Document :
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