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Methods of single impulse detection
Juřík, Vladimír ; Bartušek, Karel (referee) ; Fiala, Pavel (advisor)
This thesis deals with measurement method pulsed quantities of electromagnetic field. This thesis was focused on methods, which make use of optic effect. Specially Faraday effect, Pockels effect and magneto-optic Kerr effect. Next it was focused on method makes use of Rogowski coil. At the end was shortly noticed about method makes use of calorimetric sensor. For experimentally realized has been chosen Faraday Magneto-optic Effect. In optic laboratory has been realized absolute methods and different methods making use of Wollaston polarizer on pneumatic optical desk. The main advantage of this method is the capability to measure the high frequency and high current signals. Next in this thesis has been written theory about Rogowski coil. This method has been experimentally realized in laboratory.
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Opto-electronical measurement methods
Kvapil, Antonín ; Drexler, Petr (referee) ; Fiala, Pavel (advisor)
This thesis deals with the aspects of methods for power and elements of electric and magnetic field measurement. Analysis of methods are performed for measuring pulsed voltage, current and power electromagnetic puls in this thesis. The method and workplace for measuring power of electromagnetic field is designed. The measurement method has been experimentally realized.
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The polyfunctional house
Fiala, Pavel ; Sedlák, Radek (referee) ; Benešová, Romana (advisor)
Subject matterś thesis is elaborate a project documentation for structural permission for a multi-functional building. Object is situated on the outskirts of town Třebíč. The property is slightly sloped to the south side. The basisc are made from contrete strips. The grand plan of the house consists from rectangles. The house is made by a brick technology of a ceramic blocks. The building is roofed with mono-pitched roofs.
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Numericalanalysis and measurement of the magnetic charakteristics in inhomogeneous materials by the NMR technics
Mrázek, Jiří ; Bartušek, Karel (referee) ; Fiala, Pavel (advisor)
This bachelor thesis is concerned in magnetic susceptibility of specific object (glass cube, with four sticks in the centre). In the first part determining of magnetic susceptibility of object was carried out. Measuring was conducted on tomograph of ÚPT AV ČR. Method of gradient echo, which allows magnetic susceptibility determining of non-magnetic materials, was used. Distribution of magnetic field within the object was acquired (object was measured with and without sticks), the change of magnetic field (between object with and without stick) was subsequently determined. In the second part, magnetic field simulation of the same object in the ANSYS software was performed. Calculation was conducted on 3D model by the finite element analysis. Distribution of magnetic field of object was acquired as a result of simulation. Results from simulation were compared with experimental findings.
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Sensor for low-speed continuous motion sensing
Tomášek, Petr ; Slavík,, Lubomír (referee) ; Fiala, Pavel (advisor)
Diploma thesis analyses low-speed flow measurement. Thesis consist of 4 chapters. First chapter is about liquids and its attributes, flow meters, especially induction flow meter, which is very important for designed sensor. In second chapter is detailed process of designing sensor. Description of realization and measurement of flow is in the third chapter. Result summary is in conclusion.
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Dynamic laser interferometer
Chovaneček, Libor ; Drexler, Petr (referee) ; Fiala, Pavel (advisor)
The theme of this bachelor´s project is dynamic laser interferometer. The project is firstly focused on theory, where it explains the term of interference and principle of operation of interferometer on specific types of interferometers. Different types of lasers used in interferometers are mentioned there. The next part of this paper is focused on assemblage of interferometer with description of particular parts. There are mentioned two methods of signal processing. The last part deals with confirmation of proper functioning of measuring system.
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The effect of electromagnetic fields on cell structure
Urbánek, Jiří ; Fiala, Pavel (referee) ; Vlachová Hutová, Eliška (advisor)
The main concern of the work is researching the influence of electromagnetic field on cellular structures. Cellular structures is a general term for all the organelles placed in a cell. In our 2D model we take into consideration just the fundamental organelles such as cell membrane, cytoplasm and cell nucleus. The aim of the work was to get acquainted with the outer environment into which we had placed the 2D model of the cell and on which we had applied the magnetic field. The work contains the results gained by numeric modelling in the physical programme COMSOL. These results prove the theoretical presumption.
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Passive optical detection of moving targets
Hladík, Roman ; Král, Bohumil (referee) ; Fiala, Pavel (advisor)
This master thesis deals with a problem of a small moving object detection - one or few pixels. Relevant mathematical aparats which are usualy used for processing of dynamic pictures are included. There was proposed experimental aparat for standalone locator for real-time operation. It is consisted from two devices - CMOS camera module and development board based on ARM processor. System GNU/Linux is used as operation system on this board. There were also tested methods useful for the essence of this project. On behalf of the tests was developed an algorithm to detect small particle in video sequence. C language routines were build including essence algorithms.
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Low-level measurement methods
Müller, Tomáš ; Steinbauer, Miloslav (referee) ; Fiala, Pavel (advisor)
This bachelor thesis discuss about low-level measurement methods. Also is outline the method, how to proceed in lay-out of measurement system and in selection of measurement device and its accessories. Thereinafter is stated the calculation of mistakes and in recent time also the calculation of often use mazes. Without them would be not the result total. Next part of this bachelor theses pointed to practical measurement in the area of low level current and voltage, where are shown and described wiring types used for these measurements. Next chapters discuss about measurement principles low level electric current and voltage. Than try to point to appearance, which indisposed participace on measurement accuracy and try to introduce with steps, which helps to reduce this effects. These voltages and currenties are in normal measurement insignificant, but in the low-levels influence they the result too much. Thereinafter is described the principle of measuring amplifier and closer mentioned parameters and usage of instrumentation amplifier with ultra low input bias current INA 116. Next to last point of this bachelor thesis is an example of usage this network in measurement with gerdien condenser. Therein is clarify its physical principle and proposal parameters. In the last part is described the air ions concentration measurement with gerdien condenser. Also are described the results of measurement and results of this.
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