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Digitally controlled power supply
Stupka, Dominik ; Drexler, Petr (referee) ; Szabó, Zoltán (advisor)
This document describes design of the laboratory power supply with digital control. Power control consists from a control section which handles communication between the modules and the power section.Into the power section is integrated switching and linear regulator. The designed power supply contains two such modules. To control are used microcontrollers from Atmel. Source parameters are 2 x 30 V / 0 – 3 A. During the construction we have to emphasis on the accuracy of regulation the output values and the modularity of the solution.
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Mikroprocesor control for laboratory power source
Hauer, Petr ; Kubásek, Radek (referee) ; Szabó, Zoltán (advisor)
This bachelor thesis aims to design and implementation a laboratory power supply controlled by microprocessor and PC via USB. The theoretical part describes the USB bus and the manner of its implementation to the microprocessor. There are the basic types of switching and linear sources and methods of control by a microprocessor. The practical part deals with the design and implementation of the resource. The results of this work are the themes of control and power part of power supply, printed circuit boards, software for the PC and microprocessor and measurements on the completed source.
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Metal detector for industrial use
Stehno, Rostislav ; Hrabina, Jan (referee) ; Szabó, Zoltán (advisor)
The goal of this project is explore and study the ways of metal detecting and create a metal detector for industrial use. When the device were inventing, a lot of methods were studied and the impulse detect method were chosen as the most perspective way of metal detecting, thanks to a huge electronics parts possibilities. After experiences with preceding device was necessary to redesign it. Main target of this thesis is to increase the computing power of detector. For this purpose will device need a new microcontroller. Device will communicate with PC trough a USB port. The device will have a battery which allows device to run for a few hours. Processing of measured data will be make even with DFT which will lead to better analyze of mass and type of conductor under device.
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Design of a new ion counter for the nature environment
Roubal, Šimon ; Szabó, Zoltán (referee) ; Roubal, Zdeněk (advisor)
Subject of this bachelors thesis is an realization of new control board for iontmeter that is developed at UTEE. Iontmeter must be capable of fully autonomous measure in outside contitions. That means it has to be able to run on batery for a long time and has to be to resist outside weather conditions. Measured data will be saved on an SD card and also sent using GSM network to the IoT server.
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SMD Rework station
Szabó, Michal ; Roubal, Zdeněk (referee) ; Szabó, Zoltán (advisor)
This thesis describes the theory of solder joint and conditions under which it is formed correctly. Further, methods of hand soldering are discussed, and possibilities of temperature regulation of soldering tip are analyzed. Methods of creating a soldering station and its key features are depicted. In practical part, the solution of how to create a soldering station with soldering iron, desolder gun and heatgun is given and is constructed. While testing a defect is found that prevents the power portion of soldering station to function properly and prevents completion.
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Indikator position behind the wall
Pecha, Václav ; Marcoň, Petr (referee) ; Szabó, Zoltán (advisor)
The work sums up the basic measurement principles for different kinds of searching devises. It deals with measurement using resonance. The feature of resonance and measurement techniques are described to set the location of the radiating circuite. The work contains the design of a locator of position behind a wall itself as well as the concrete switch connection, schema and description of receiver and emitter in the circuit.
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Design and construction of dual Crawford chamber
Haloda, Jiří ; Hadinec, Michal (referee) ; Szabó, Zoltán (advisor)
Dual Crawford cell is also known as dual TEM-cell (Transversal Electromagnetic Mode cell). It is device used for electromagnetic compatibility measurement (emission and immunity) and for biological application. This papers is focused on usage and design dual Crawford chamber and measuring of their electromagnetic compatibility. There are shown their advantages and disadvantages. This type of cell is simple for design and for the construction too. Construction of dual Crawford chamber with characteristic impedance of 50? for measure in 1GHz range was calculated.
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Detection of the retinal nerve fibre layer
Kunc, Martin ; Szabó, Zoltán (referee) ; Kolář, Radim (advisor)
This thesis is deals with the nerve fibre layer in the colour ophthalmology images of retina. The thesis describes how can we use finding of nerve fibre layer and how was it solved in the past. In the thesis are proposed the methods that are based on processing and scoring frequency spectrums of individual sample of retina. At first here are described the methods of detection on the artificial generated samples that just simulate the nerve fibre layer. Then the thesis concentrates on processing of real images of retina. Because of the bloodstream, that depreciates processing at real images, are all surveyed samples are chosen manually. Except detection the nerve fibre layer itself, the thesis also deals with determination of direction their dissemination.
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High-intensity strobe light source
Rehák, Ondrej ; Drexler, Petr (referee) ; Szabó, Zoltán (advisor)
This bachelor’s thesis discusses influence of high-intensity light strobes on human. Content of this thesis contain description of human sight and reaction of human sight to high-intense light strobes and consequently using this information to create device for temporal disable or disorientate of attacker. High-intensity light strobe source was designed to be light-weighted and compact. The case was designed and made on 3D printer, device is powered by lithium-polymer battery.
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