2D MODELLING OF A SENSOR FOR ELECTRICAL CAPACITANCE TOMOGRAPHY IN ECTSIM TOOLBOX
Journal Title: Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska - Year 2017, Vol 7, Issue 1
Abstract
Electrical capacitance tomography is used to visualize a spatial distribution of dielectrical permittivity of materials placed in a tomographic sensor. An image is reconstructed from measurements of mutual capacitances of electrodes placed around the examined volume. This technique is characterized by very high temporal resolution – it is possible to achieve even few thousands of images per second. One of drawbacks of the method is low spatial resolution. Electrical capacitance tomography is mainly used in industry, e.g. for multiphase flow visualization. One of important elements of a tomographic system is a sensor which parameters influence quality of measurements and therefore affects quality of reconstructed images. In the Division of Nuclear and Medical Electronics a Matlab toolbox called ECTsim was developed. It is used for modelling of sensors, simulations of electrical field and image reconstruction. In this article we present the latest improvement which is modelling of a sensor using algebra of sets. Using primitive elements like rectangle and sector of a ring it is possible to perform operations like union, intersection and difference of two elements with a designed language. With such tools it is easy to prepare complex models of tomographic sensors which have different geometries. In this paper we show two models of sensors with different geometry in order to show how ECTsim solves forward problem.
Authors and Affiliations
Jacek Kryszyn, Waldemar Smolik
Keywords
Related Articles
- EP ID EP221808
- DOI 10.5604/01.3001.0010.4604
- Views 127
- Downloads 0
BOUNDARY ELEMENT METHOD AND SET LEVEL METHOD IN ELECTRICAL DIFFUSE TOMOGRAPHY
In this paper was presented coupling Boundary Element Method and Set Level methods for identification of unknown shape of interface in electrical impedance tomography (EIT). It’s shown how determinate velocity, how exten...
CALCULATION OF THE IMPROPER INTEGRALS FOR FOURIER BOUNDARY ELEMENT METHOD
The traditional Boundary Element Method (BEM) is a collection of numerical techniques for solving some partial differential equations. The classical BEM produces a fully populated coefficients matrix. With Galerkin Bound...
ZASTOSOWANIE ROZMYTEJ MAPY KOGNITYWNEJ W PROGNOZOWANIU EFEKTYWNOŚCI PRACY WYPOŻYCZALNI ROWEROWYCH
W pracy zaproponowano zastosowanie rozmytej mapy kognitywnej wraz z ewolucyjnymi algorytmami uczenia do modelowania systemu prognozowania efektywności pracy wypożyczalni rowerowych. Na podstawie danych historycznych zbud...
ANALIZA PORÓWNAWCZA PANELU FOTOWOLTAICZNEGO I DACHÓWKI SOLARNEJ W ZASTOSOWANIU DO BUDOWNICTWA JEDNORODZINNEGO
W pracy przedstawiono sfery oddziaływań instalacji fotowoltaicznych. Scharakteryzowano budowę, zasadę działania oraz rodzaje ogniw PV. Podano typy możliwych konfiguracjach instalacji oraz ich elementy. Dokonano porównani...
ELECTRICAL RESISTANCE TOMOGRAPH FOR DISTRIBUTED MEASUREMENTS FOR FLOOD EMBANKMENT
In this paper the terrain electrical resistance tomograph was presented. Its aim is to verify the repeatability of test results by eliminating laboratory equipment, and to validate the use of simple and cheap electronics...