2 MHz electrical resistance tomography for static liquid solid profile measurement

Tomography is a technique used to reconstruct cross-sectional image of a pipeline for flow monitoring applications. There are several types of tomography system such as X-ray tomography, ultrasonic tomography, and electrical resistance tomography (ERT). ERT has many advantages compared to other type...

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Main Author:	Yasmin, Abdul Wahab
Format:	Thesis
Language:	English
Published:	2017
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/31315/1/2%20mhz%20electrical%20resistance%20tomography%20for%20static%20liquid%20solid%20profile%20measurement.pdf
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spelling	my-ump-ir.313152023-01-12T03:06:50Z 2 MHz electrical resistance tomography for static liquid solid profile measurement 2017-05 Yasmin, Abdul Wahab TK Electrical engineering. Electronics Nuclear engineering Tomography is a technique used to reconstruct cross-sectional image of a pipeline for flow monitoring applications. There are several types of tomography system such as X-ray tomography, ultrasonic tomography, and electrical resistance tomography (ERT). ERT has many advantages compared to other types of tomography such as low cost, robust and no radiation. Thus, it becomes particularly suitable for industrial applications. However, it has been observed that the conventional practice of ERT through invasive sensing technique has exposed the ERT metal sensor to corrosion and limited its application because of inaccurate measurement of the data. Consequently, non-invasive ERT has also been introduced in low frequency (in kHz) applied to the ERT system. The low frequency ERT makes use of the phase-sensitive demodulation (PSD) approach and is a complicated technique to implement. Hence, the goal of this research is to design and develop a non-invasive ERT system with a high frequency (2 MHz) source. A total impedance of coupling capacitances (between metal electrode and conductive medium) series with resistance (conductive medium) for each pair of electrodes was assumed in the research. Based on the mathematical equation of the total impedance, a real part that is the resistance (conductive medium) must be larger than an imaginary part (capacitances), so that it easily to detect the concentration profile of the conductive medium. Therefore, the minimum frequency to ensure the real part is bigger than the imaginary one is 2 MHz. Simultaneously, the independent and flexible sixteen ERT electrodes designed for the system make it easier to replace and troubleshoot any problems with the sensor. In addition, the system carried out an experimental two-phase static liquid–solid regime for a linear back-projection algorithm using online configuration, with MATLAB as a software platform. It was also able to detect and visualize the non homogenous system of the two-phase regime. Later, the reconstructed image was improved using a global threshold technique through offline configuration. The experiment results indicate that it could detect obstacles in a vertical pipe with minimum 12 mm in diameter and 4.5 cm in height, and above. 2017-05 Thesis http://umpir.ump.edu.my/id/eprint/31315/ http://umpir.ump.edu.my/id/eprint/31315/1/2%20mhz%20electrical%20resistance%20tomography%20for%20static%20liquid%20solid%20profile%20measurement.pdf pdf en public phd doctoral Universiti Teknologi Malaysia Faculty of Electrical Engineering Ruzairi, Abdul Rahim
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
advisor	Ruzairi, Abdul Rahim
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Yasmin, Abdul Wahab 2 MHz electrical resistance tomography for static liquid solid profile measurement
description	Tomography is a technique used to reconstruct cross-sectional image of a pipeline for flow monitoring applications. There are several types of tomography system such as X-ray tomography, ultrasonic tomography, and electrical resistance tomography (ERT). ERT has many advantages compared to other types of tomography such as low cost, robust and no radiation. Thus, it becomes particularly suitable for industrial applications. However, it has been observed that the conventional practice of ERT through invasive sensing technique has exposed the ERT metal sensor to corrosion and limited its application because of inaccurate measurement of the data. Consequently, non-invasive ERT has also been introduced in low frequency (in kHz) applied to the ERT system. The low frequency ERT makes use of the phase-sensitive demodulation (PSD) approach and is a complicated technique to implement. Hence, the goal of this research is to design and develop a non-invasive ERT system with a high frequency (2 MHz) source. A total impedance of coupling capacitances (between metal electrode and conductive medium) series with resistance (conductive medium) for each pair of electrodes was assumed in the research. Based on the mathematical equation of the total impedance, a real part that is the resistance (conductive medium) must be larger than an imaginary part (capacitances), so that it easily to detect the concentration profile of the conductive medium. Therefore, the minimum frequency to ensure the real part is bigger than the imaginary one is 2 MHz. Simultaneously, the independent and flexible sixteen ERT electrodes designed for the system make it easier to replace and troubleshoot any problems with the sensor. In addition, the system carried out an experimental two-phase static liquid–solid regime for a linear back-projection algorithm using online configuration, with MATLAB as a software platform. It was also able to detect and visualize the non homogenous system of the two-phase regime. Later, the reconstructed image was improved using a global threshold technique through offline configuration. The experiment results indicate that it could detect obstacles in a vertical pipe with minimum 12 mm in diameter and 4.5 cm in height, and above.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Yasmin, Abdul Wahab
author_facet	Yasmin, Abdul Wahab
author_sort	Yasmin, Abdul Wahab
title	2 MHz electrical resistance tomography for static liquid solid profile measurement
title_short	2 MHz electrical resistance tomography for static liquid solid profile measurement
title_full	2 MHz electrical resistance tomography for static liquid solid profile measurement
title_fullStr	2 MHz electrical resistance tomography for static liquid solid profile measurement
title_full_unstemmed	2 MHz electrical resistance tomography for static liquid solid profile measurement
title_sort	2 mhz electrical resistance tomography for static liquid solid profile measurement
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Electrical Engineering
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/31315/1/2%20mhz%20electrical%20resistance%20tomography%20for%20static%20liquid%20solid%20profile%20measurement.pdf
_version_	1783732165059543040

2 MHz electrical resistance tomography for static liquid solid profile measurement

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