Design of Data Acquisition System for 12-Electrode Electrical Capacitance Tomography

Author

Sheng, Liu ; Yijian, Shen ; Guibin, Zheng

Author_Institution

Univ. of Harbin Eng., Harbin

fYear

2007

fDate

5-8 Aug. 2007

Firstpage

2293

Lastpage

2297

Abstract

In ECT system, it is difficult to compensate the couple capacitances in measuring the low value capacitance because there is a difference of two levels between the capacitance in electrodes and the coupling capacitance. The object of this paper is majored in the research of 12-electrode oil-water two-phase flow electrical capacitance tomography system. According to the principle of ECT system, the data acquisition system is designed. The low capacitance values are measured adopting the front compensation method and the key technique in the process of measuring is analyzed and discussed. The experimental results show that the method is practicable to the measurement of low value capacitance.

Keywords

capacitance measurement; compensation; computerised tomography; data acquisition; electrodes; flow visualisation; mechanical engineering computing; two-phase flow; 12-electrode electrical capacitance tomography; coupling capacitance; data acquisition system; front compensation method; oil-water two-phase flow; Capacitance measurement; Circuits; Data acquisition; Data engineering; Design automation; Design engineering; Electrical capacitance tomography; Electrodes; Fluid flow measurement; Permittivity; Couple capacitance; Data acquisition; Electrical capacitance tomography; Front Compensation; Low value capacitance measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation, 2007. ICMA 2007. International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4244-0828-3

Electronic_ISBN

978-1-4244-0828-3

Type

conf

DOI

10.1109/ICMA.2007.4303910

Filename

4303910