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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 to the structure of the ERT. Electrical resistance tomography, which is based on measuring potential difference, can be used to calculate conductivity.
The parametric and semantic model of open platform of intelligent devices and sensor technologies based on tomography in cyber-physical selfmonitoring system contains: new techniques of conducting measurements and construction of novel intelligent measurement devices, system's structure along with communication interface, unique algorithms for data optimization and analysis, algorithms for image reconstruction...
The boundary element method and the level set method can be used in order to solve the inverse problem for electric field. In this approach the adjoint equation arises in each iteration step. Results of the numerical calculations show that the boundary element method can be applied successfully to obtain approximate solution of the adjoint equation. The proposed solution algorithm is initialized by...
In this paper, we investigate the inverse problem for the electric field so-called copper mine problem. In general, this task assumes detection of all air gaps. Gaps are localised above ceiling in a copper mine. Such task can be considered as application of the electrical impedance tomography. In order to solve forward problem there was used the boundary element method or the finite element method...
In many applications of electrical tomography, such as monitoring the lungs of unconscious intensive care patients, data acquisition on the entire boundary of the body is impractical. The boundary area available for electrical tomography measurements is restricted. Physiological processes that produce changes in the electrical conductivity of the body can be monitored by hybrid algorithms. This paper...
This paper presents the hybrid algorithm for identification the unknown shape of an interface to solve the inverse problem in electrical impedance tomography. The conductivity values in different regions are determined by the finite element method. The numerical algorithm is a combination of the level set method, Gauss-Newton method and the finite element method. The representation of the shape of...
Przedstawiam rozwiązanie problemu prostego dla pola elektrycznego otrzymane z wykorzystaniem metody elementów brzegowych. Funkcja opisująca rozkład przewodnictwa właściwego na rozważanym obszarze przyjmuje dwie różne niezerowe wartości. Proponowane podejście może zostać wykorzystane przy wyznaczaniu rozwiązania zagadnienia odwrotnego w systemie przeznaczonym do monitorowania stanu wałów przeciwpowodziowych...
W niniejszej pracy analizowane jest zjawisko oscylacji elektronowych w układzie, który składa się z dwóch kropek kwantowych oraz dwóch doprowadzeń. Elementy te są ze sobą sprzężone szeregowo. Model matematyczny rozważanego systemu opiera się na metodzie równania ruchu dla odpowiednich funkcji korelacyjnych. W obliczeniach uwzględniono oddziaływania kulombowskie pomiędzy elektronami zlokalizowanymi...
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