Title :
Electrical capacitance tomography system for monitoring process flow in pipe
Author :
Rerkratn, Apinai ; Chitsakul, Kitiphol ; Soisup, Anek ; Wuti, Virot
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
This paper presents the development system for monitoring process flow in pipe. The system consists of a cylindrical sensor with 8 surrounding electrodes attached on external surface. An electronic circuit has been realized for injecting charges into the object and collecting the node potentials around the sensor. Then the node potentials and the dielectric of small elements of cross section are calculated. The cross-section image reconstruction of dielectric distribution in pipe is based on the finite element method and linear back-projection algorithm (LBP) method. The iterative algorithm and threshold method also have been used to improve the image quality. Experimental results of the sensor filled with two different permittivity test phantoms have been displayed in gray level. The reconstructed images are closely resemble with the cross-section of the real object in pipe.
Keywords :
capacitance measurement; finite element analysis; flow measurement; image reconstruction; iterative methods; pipe flow; process monitoring; tomography; cross section image reconstruction; cylindrical sensor; dielectric distribution; electrical capacitance tomography; finite element method; image quality; iterative algorithm; linear back projection algorithm; pipe flow monitoring process; threshold method; Capacitance; Capacitance measurement; Electric potential; Electrical capacitance tomography; Electrodes; Image reconstruction; Petroleum; Capacitance Measurement; Linear back-projection; Process Tomograpy; Process monitoring;
Conference_Titel :
SICE Annual Conference 2010, Proceedings of
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-7642-8
