Complex-valued, multifrequency electrical capacitance tomography (CVMF-ECT) is a recently developed tomographic concept which capable of simultaneously reconstructing spectral permittivity and conductivity properties target objects within the region interest. To date, this has been limited to simulation another key issue restricting its wide adoption lies in poor image quality. This letter repo...

The tomographic imaging of process parameters for oil-gas-water three-phase flow can be obtained through different sensing modalities, such as electrical resistance tomography (ERT) and electrical capacitance tomography (ECT), both of which are sensitive to specific properties of the objects to be imaged. However, it is hard to discriminate oil, gas and water phases merely from reconstructed im...

Electrical capacitance tomography (ECT) is an effective technique for visualizing the distribution of dielectric materials inside a closed pipe or vessel. The design of an ECT system based on LabVIEW is described in this paper. The system can be divided into three parts: sensor system, data acquisition system, and imaging computer. The data acquisition system designed takes C8051F700 MCU as the...

Two-phase flow behaviour and its patterns have a significant effect in many applications industry. Oil-gas is one of the two-phase types that petroleum power stations. An oil-gas been investigated an inclined pipe using two different tomography sensors: Wire Mesh sensor (WMS) Electrical Capacitance Tomography (ECT). A special experimental facility was designed built to operate tow-phase applica...

Multiphase flow imaging is a very challenging and critical topic in industrial process tomography. In this article, simulation and experimental results of reconstructing the permittivity profile of multiphase material from data collected in electrical capacitance tomography (ECT) are presented. A multiphase narrowband level set algorithm is developed to reconstruct the interfaces between three-...

Submit Manuscript | http://medcraveonline.com Abbreviations: PMMA: Poly Methyl Methacrylate; TSMR: Thickness Shear Mode Resonator; IECOFS: Intrinsic Exposed Core Optical Fiber Sensor; ATR: Attenuated Total Reflectance; DTS: Distributed Temperature Sensor; CPSM: Cylindrical Phase Shift Migration Algorithm; ANNs: Artificial Neural Networks; MFL: Magnetic Flux Leakage; ICS: Internal Corrosion Sens...

Submit Manuscript | http://medcraveonline.com Abbreviations: PMMA: Poly Methyl Methacrylate; TSMR: Thickness Shear Mode Resonator; IECOFS: Intrinsic Exposed Core Optical Fiber Sensor; ATR: Attenuated Total Reflectance; DTS: Distributed Temperature Sensor; CPSM: Cylindrical Phase Shift Migration Algorithm; ANNs: Artificial Neural Networks; MFL: Magnetic Flux Leakage; ICS: Internal Corrosion Sens...

Electrical-capacitance tomography (ECT) is a novel technique for the non-invasive internal visualization of industrial processes such as mixing, separation and multiphase flow, involving electrically nonconducting mixtures. One of the most promising potential applications of ECT is the determination of the amount of gas, oil and water produced by an oil well. The principle of ECT is to place a ...

A method based on Electrical Capacitance Tomography (ECT) and an improved Least Squares Support Vector Machine (LS-SVM) is proposed for void fraction measurement of oil-gas two-phase flow. In the modeling stage, to solve the two problems in LS-SVM, pruning skills are employed to make LS-SVM sparse and robust; then the Real-Coded Genetic Algorithm is introduced to solve the difficult problem...

An electrical capacitance tomography (ECT) system is calibrated at the upper and lower values of permittivity. The measured capacitances are usually normalised and then used for image reconstruction. The conventional normalisation approach assumes that the distribution of the materials is in parallel and hence the normalised capacitance is a linear function of the measured capacitance. This app...