Design and Simulation of an 8-Lead Electrical Capacitance Tomographic System for Flow Imaging

Authors

  • S. M. A. Ghaly Electrical Engineering Department, College of Engineering, Al-Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
  • K. A. Al-Snaie Electrical Engineering Department, College of Engineering, Al-Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
  • M. O. Khan Electrical Engineering Department, College of Engineering, Al-Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
  • M. Y. Shalaby Electrical Engineering Department, College of Engineering, Al Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
  • M. T. Oraiqat Electrical Engineering Department, College of Engineering, Al-Imam Mohammad Ibn Saud Islamic University, Saudi Arabia
Volume: 11 | Issue: 4 | Pages: 7430-7435 | August 2021 | https://doi.org/10.48084/etasr.4122

Abstract

Electrical Capacitance Tomography (ECT) is a method for determining the dielectric permittivity distribution inside an object from measurements of external capacitance. The technique differs from conventional tomographic methods in which high-resolution images are formed from slices of the material. The measuring electrodes, which are metal plates, must be large enough to give a measurable change in capacitance. The main objective of this paper is the implementation and simulation of 8 external electrode ECT systems in order to increase the quality of reconstructed permittivity images while preserving the simplicity of design and fulfilling the demand for real-time process tomography. A complete sensor model was developed to improve the accuracy of the forward validation, especially the validation of measured data from neighboring electrodes. A prototype ECT sensor with high sensitivity was designed that can be applied to all materials which have low electrical conductivity. The capacitance between different electrode pairs is calculated for some typical permittivity distributions based on LabVIEW and MATLAB. The obtained capacitance data can be used to reconstruct images. The sensitivity distributions for the ECT sensors with different numbers of electrodes were analyzed. Preliminary tests were performed and the developed prototype showed good performance. The developed concept contributes to the study and comprehension of the ECT systems that can be used for the monitoring of oil-gas flow.

Keywords:

electrical capacitance tomography, permitivity, LabView, simulation, electrode

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References

S. M. Huang, A. B. Plaskowski, C. G. Xie, and M. S. Beck, "Tomographic imaging of two-component flow using capacitance sensors," Journal of Physics E: Scientific Instruments, vol. 22, no. 3, pp. 173-177, Mar. 1989. https://doi.org/10.1088/0022-3735/22/3/009

M. S. Beck and R. A. Williams, "Process tomography: a European innovation and its applications," Measurement Science and Technology, vol. 7, no. 3, pp. 215-224, Mar. 1996. https://doi.org/10.1088/0957-0233/7/3/002

T. Dyakowski et al., "Imaging nylon polymerisation processes by applying electrical tomography," Chemical Engineering Journal, vol. 77, no. 1, pp. 105-109, Apr. 2000. https://doi.org/10.1016/S1385-8947(99)00132-1

M. S. Beck, T. Dyakowski, and R. A. Williams, "Process tomography - the state of the art," Transactions of the Institute of Measurement and Control, vol. 20, no. 4, pp. 163-177, Oct. 1998. https://doi.org/10.1177/014233129802000402

W. Q. Yang, "Calibration of capacitance tomography systems: a new method for setting system measurement range," Measurement Science and Technology, vol. 7, no. 6, pp. L863-L867, Jun. 1996. https://doi.org/10.1088/0957-0233/7/6/001

S. M. Huang, C. G. Xie, M. S. Beck, R. Thorn, and D. Snowden, "Design of sensor electronics for electrical capacitance tomography," IEE Proceedings G (Circuits, Devices and Systems), vol. 139, no. 1, pp. 83-88, Feb. 1992. https://doi.org/10.1049/ip-g-2.1992.0014

Ø. Isaksen, "A review of reconstruction techniques for capacitance tomography," Measurement Science and Technology, vol. 7, no. 3, pp. 325-337, Mar. 1996. https://doi.org/10.1088/0957-0233/7/3/013

W. Q. Yang, D. M. Spink, T. A. York, and H. McCann, "An image-reconstruction algorithm based on Landwebertextquotesingles iteration method for electrical-capacitance tomography," Measurement Science and Technology, vol. 10, no. 11, pp. 1065-1069, Sep. 1999. https://doi.org/10.1088/0957-0233/10/11/315

Z. Fan and R. X. Gao, "Enhancement of Measurement Efficiency for Electrical Capacitance Tomography," IEEE Transactions on Instrumentation and Measurement, vol. 60, no. 5, pp. 1699-1708, May 2011. https://doi.org/10.1109/TIM.2011.2113010

W. Warsito, Q. Marashdeh, and L.-S. Fan, "Electrical Capacitance Volume Tomography," IEEE Sensors Journal, vol. 7, no. 4, pp. 525-535, Apr. 2007. https://doi.org/10.1109/JSEN.2007.891952

Q. Marashdeh, F. Wang, L.-S. Fan, and W. Warsito, "Velocity Measurement of Multi-Phase flows Based on Electrical Capacitance Volume Tomography," in 2007 IEEE SENSORS, Atlanta, GA, USA, Oct. 2007, pp. 1017-1019. https://doi.org/10.1109/ICSENS.2007.4388577

F. Alorifi, S. M. A. Ghaly, M. Y. Shalaby, M. A. Ali, and M. O. Khan, "Analysis and Detection of a Target Gas System Based on TDLAS & LabVIEW," Engineering, Technology & Applied Science Research, vol. 9, no. 3, pp. 4196-4199, Jun. 2019. https://doi.org/10.48084/etasr.2736

S. M. A. Ghaly, "LabVIEW Based Implementation of Resistive Temperature Detector Linearization Techniques," Engineering, Technology & Applied Science Research, vol. 9, no. 4, pp. 4530-4533, Aug. 2019. https://doi.org/10.48084/etasr.2894

S. M. A. Ghaly, M. O. Khan, S. O. E. Mehdi, M. Al-Awad, Μ. A. Ali, and K. A. Al-Snaie, "Implementation of a Broad Range Smart Temperature Measurement System using Auto-Selected Multi-Sensor Core in LabVIEW Environment," Engineering, Technology & Applied Science Research, vol. 9, no. 4, pp. 4511-4515, Aug. 2019. https://doi.org/10.48084/etasr.2896

Z. Cao, L. Xu, and H. Wang, "Image reconstruction technique of electrical capacitance tomography for low-contrast dielectrics using Calderontextquotesingles method," Measurement Science and Technology, vol. 20, no. 10, Sep. 2009, Art. no. 104027. https://doi.org/10.1088/0957-0233/20/10/104027

M. Baidillah, W. Warsito, and M. Mukhlisin, "The Optimum Design of 3D Sensor for Electrical Capacitance Volume-Tomography (ECVT)," Jurnal Matematika dan Sains, vol. 16, no. 3, pp. 123-128, Dec. 2011.

M. R. Baidillah, M. Mukhlisin, and W. P. Taruno, "Comparisons of sensor geometries for electrical capacitance volume tomography," International Journal of Innovative Computing, Information and Control, vol. 9, no. 11, pp. 4447-4457, Nov. 2013.

S. M. A. Ghaly and S. Al-Sowayan, "A High B1 Field Homogeneity Generation Using Free Element Elliptical Four-Coil System," American Journal of Applied Sciences, vol. 11, no. 4, pp. 534-540, Feb. 2014. https://doi.org/10.3844/ajassp.2014.534.540

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How to Cite

[1]
S. M. A. Ghaly, K. A. Al-Snaie, M. O. Khan, M. Y. Shalaby, and M. T. Oraiqat, “Design and Simulation of an 8-Lead Electrical Capacitance Tomographic System for Flow Imaging”, Eng. Technol. Appl. Sci. Res., vol. 11, no. 4, pp. 7430–7435, Aug. 2021.

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