Electric Potential of Various 4-electrode Segmentation Excitation for Electrical Capacitance Tomography System
DOI:
https://doi.org/10.11113/jt.v69.3293Keywords:
Electrical capacitance tomography, segmentation excitationAbstract
Electrical Capacitance Tomography (ECT) system is a non-intrusive method to detect variation of permittivity distribution in a closed pipe. ECT offers fast response, cheap and non-radiation system. However, it suffers from soft-field effect. One of the proposed solutions to overcome this problem is by applying segmentation excitation, which is to have more than one electrode excited at one time. This paper focuses on various segmentation excitations of 4-electrode combinations using COMSOL Multiphysics software. The electrical potential is recorded at the center of the pipe to study the strength of the electrical potential. The result indicates that 4-electrode adjacent configuration recorded 1.005 x 10-9V at the center of the pipe as compared to 0.838 x 10-9V for opposite configuration. This effect shows 16.6% difference in electrical potential at the center of the pipe.
References
W. R. Hendee. 1989. Cross Sectional Medical Imaging: A History. RadioGraphics. 9: 1155–1180.
M. S. Beck and R. A. Williams. 1996. Process Tomography: A European Innovation and Its Applications. Measurement Science and Technology. 7: 215–224.
R. A. Williams and M. S. Beck. 1995. Process Tomography: Principles, Techniques, and Applications. Butterworth-Heinemann.
N. Reinecke and D. Mewes. 1996. Recent Developments and Industrial/Research Applications of Capacitance Tomography. Measurement Science and Technology. 7: 233–246.
P. T. Ltd. 2009. Electrical Capacitance Tomography System Type TFLR5000 Operating Manual, Fundamentals of ECT.
P. Waje and N. Warke. 2012. Review: Electrical Capacitance Tomography. International Journal of Engineering Research and Applications. 49–53.
Q. Marashdeh, W. Warsito, a. Liang-Shih Fan, and S. M. Fernando L. Teixeira, IEEE. 2007. A Multimodal Tomography System Based on ECT Sensors. IEEE Sensors Journal. 7: 426–433.
X. Song. 2005. Statistical Analysis and Evaluation of Near Infrared Tomographic Imaging System. PhD, Thayer School of Engneering Dartmouth College, Hanover, New Hampshire.
C. G. Xie, S. M. Huang, B. S. Hoyle, R. Thorn, C. Lenn, D. Snowden, et al. 1992. Electrical Capacitance Tomography for Flow Imaging: System Model for Development of Image Reconstruction Algorithms and Design of Primary Sensors. IEE PROCEEDINGS-G. 139: 89–98.
S. Ibrahim, R. G. Green, K. Dutton, K. Evans, R. A. Rahim, and A. Goude. 1999. Optical Sensor Configurations for Process Tomography. Measurement Science and Technology. 10: 1079–1086.
Z. Fan and R. X. Gao. 2011. Enhancement of Measurement Efficiency for Electrical Capacitance Tomography. IEEE Transactions on Instrumentation and Measurement. 60: 1699–1708.
K.-J. J. Alme and S. Mylvaganam. 2007. Comparison of Different Measurement Protocols in Electrical Capacitance Tomography Using Simulations. IEEE Transactions on Instrumentation and Measurement. 56: 2119–2130.
L. Lanying, G. Ming, and C. Deyun. 2011. A novel multiple-electrodes excitation method for electrical capacitance tomography system. In 2011 6th International Forum on Strategic Technology (IFOST). 1167–1171.
A. M. Olmos, M. A. Carvajal, D. P. Morales, A. GarcÃa, and A. J. Palma. 2008. Development of an Electrical Capacitance Tomography System Using Four Rotating Electrodes. Sensors and Actuators A: Physical. 148: 366–375.
Elmy Johana, F. R. M. Yunus, R. A. Rahim, and K. S. Chan. 2011. Hardware Development of ECT for Imaging a Mixture of Water and Oil. Jurnal Teknologi. 54(Special Edition): 425–442.
M. A. Zimam, E. J. Mohamad, R. A. Rahim, and L. P. Ling. 2011. Sensor Modelling of ECT using COMSOL Mutiphysics. Jurnal Teknologi. 55: 33–47.
W. Xiong. 2010. Applications of COMSOL Multiphysics Software to Heat Transfer Processes. Master Degree, Department of Industrial Management, Arcada University of Applied Sciences.
E. Dubrofsky and R. J. Woodham. 2008. Combining Line and Point Correspondences for Homography Estimation. 4th International Symposium on Visual Computing. 202–213.
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