Electrical capacitance tomography system
Simulation Analysis of Dual Excitations Method for Improving the Sensitivity Distribution of an Electrical Capacitance Tomography System
... Figure 1 shows the flow chart of the modelling process of the ECT system using Finite Element Analysis (FEA) software named COMSOL Multiphysiscs. The module consists of several physics properties and applications ...
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Hardware development of electrical capacitance tomography for imaging a mixture of water and oil
... of capacitance value due to the changes of permittivity distribution of a different dielectric materials such as water and oil in a conveying pipeline using twelve externally Electrical Capacitance ...
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Segmented excitation for electrical capacitance tomography
... Electrical Capacitance Tomography (ECT) system offers a non-invasive measurement for flow properties within ...ECT system in order to overcome low resolution of image ...of ...
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Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation
... distinguish the gas and liquid phase from the 3-D ECVT reconstructed image by utilizing the bubble swarm model. After that, an ECVT-CFD simulation of gas injection was performed to provide the volume fraction value of ...
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Characterization Of oil/ gas flow pattern in vertical pipes using electrical capacitance tomography
... As stated above footages using high speed video camera have been made and synchronised with collection of (ECT) measurements, Figure (8). The video footage are satisfactory enough to identify general slug flow from ...
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DESIGN OF EMBEDDED SYSTEM BASED RAPID SENSING AC ELECRICAL CAPACITANCE TOMOGRAPHY
... An electrical capacitance tomography (ECT) sensor consists of eight electrodes, usually mounted outside on insulating ...and capacitance is nonlinear; the electric field is distorted by the ...
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Electromagnetic inductance tomography (EMT): sensor, electronics and image reconstruction for a system with a rotatable parallel excitation
... The development of EMT together with ECT and ERT provide three fundamental electrical tomography techniques based on the measurement of resistance, capacitance and now inductance; collec[r] ...
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Simulation Studies on Image Reconstruction Algorithm for Portable Electrical Capacitance Tomography
... enhance the accuracy of data measurement. Accurate image reconstruction is a crucial part of ECT for concentration analysis, flow pattern recognition and velocity distributions. The main problem with iterative algorithm ...
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A survey on real time electrical capacitance tomography using VLSI architecture
... SPECT Tomography were also suggested by exploring their significant performance for arithmetically intensive algorithms that have structured data accesses and limited branching, which is the case of SPECT ...
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An overview: effectiveness of different arrangement for electrode guard in electrical capacitance tomography
... Standing capacitance in ECT system is the effective capacitance between electrodes that been measured supposed one of the electrode is injected with a certain signal ...standing capacitance ...
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Study the Effect of Rainfall Infiltration into Unsaturated Soil using Electrical Capacitance Volume Tomography (ECVT)
... On the other hand, the intrusion throughout the ECVT vessel is prohibited due to the sensors' sensitivity. Therefore, for installing TDR and tensiometer purposes, top of the ECVT vessel was extended with acrylic tube. ...
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Performance Analysis of Grey Level Fitting Mechanism based Gompertz Function for Image Reconstruction Algorithms in Electrical Capacitance Tomography Measurement System
... measured capacitance and the electric field is distorted by the material being monitored, this is called “soft field” ...measurement capacitance data is normally fewer than the number of pixels required to ...
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Application of Gradient Projection for Sparse Reconstruction to Compressed Sensing for Image Reconstruction of Electrical Capacitance Tomography
... ECT system hardware and inherent sampling method, it is very difficult to realize random observation and acquire the corresponding capacitance measurement ...the capacitance value vector λ in the ...
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Electrical capacitance tomography (ECT): an improved sensitivity distribution using two differential excitation technique
... The new approach of the developed sensing module is the integration of intelligent electrode sensing circuit on each of electrode sensors. A microcontroller unit and data acquisition (DAQ) system has been ...
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Electrical Capacitance Volume Tomography: a Comparison Between 12- and 24-Channels Sensor Systems
... the system into its three basic components: (1) sensors, (2) data acquisition hardware, and (3) image reconstruction ...In capacitance tomography, most of the efforts to enhance image resolution have ...
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Determination of multi-component flow process parameters based on electrical capacitance tomography data using artificial neural networks
... ANN system for direct component fraction estimation of two-component (typically two-phase) and three-component flows (for example comprising oil, water and gas; sometimes called three-phase ...
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A Grey Level Fitting Mechanism based on Gompertz Function for Two Phase Flow Imaging using Electrical Capacitance Tomography Measurement Systems
... ECT system measures the changes of electrical capacitances between all possible combinations of electrodes, which occur when a dielectric material is introduced into the ...of capacitance change, an ...
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A review on electrical capacitance tomography sensor development
... the capacitance measures only charged /discharged once in a measurement ...oil system and provides a useful tool for visualization and measurement of multiphase flow and potential applications in the ...
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Towards 3D-Electrical Capacitance Tomography for Interface Detection164-175
... The images were optimised using a previously published method whereby the threshold value of the image was optimised by correlation with image error. A voxel-by-voxel approach to calculating image error was compared with ...
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Mobile electrical capacitance tomography (ECT) development for liquid gas flow measurement
... The system developed in this research had included some new features, such as on-plate signal conditioning board to reduce cable noise, on board sine wave generator to increase the flexibility of the ...
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