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Temperature control und monitoring of laboratory kiln
Dvořák, Pavel ; Marada, Tomáš (referee) ; Němec, Zdeněk (advisor)
The aim of this bachelor work is to create a laboratory training which is made for teaching and demonstration laboratory furnace temperature control with applications created in Control Web 6.1 The role includes the regulation and capture waveforms measured and desired temperatures, allows the timing of the required temperature. The application is processed for example burning of small products. Allows archiving of temperature distribution and also monitoring the instantaneous values of the desired and measured temperatures with the possibility of switching heating via the Internet. The thesis presents a proposal for linking laboratory furnace with a computer using the input output module DataLab
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Content Based Photo Search
Dvořák, Pavel ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
This thesis covers design and practical realization of a tool for quick search in large image databases, containing from tens to hundreds of thousands photos, based on image similarity. The proposed technique uses various methods of descriptor extraction, creation of Bag of Words dictionaries and methods of storing image data in PostgreSQL database. Further, experiments with the implemented software were carried out to evaluate the search time effectivity and scaling possibilities of the design solution.
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The equipment of social care at Svitavy – building technology design
Dvořák, Petr ; Hrůza,, Jaroslav (referee) ; Hrazdil, Václav (advisor)
Diploma thesis deals with a building technological project – Social care Institucion in Svitavy. It is about a new building of retimerent home with ground plan creating a letter „ U“. The building is dilated into 3 parts: Unit „A“,Unit „B“, Unit „C“. The aim of diploma thesis is construction desing which covers site facilities technological standart, inspecting and testing plan, time and finenciel plan.A part of thesis is also specializacion in thermal protection cres.
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Principals, switching functions and routing techniques in computer networks
Dvořák, Pavel ; Pelka, Tomáš (referee) ; Polívka, Michal (advisor)
This bachelor thesis consider main principles and function of active network components. Mainly is intent to component working on the third level of referential model ISO/OSI, router. There are described its main parts and more closely charactered routing protocols. Then is verified the ability of dynamic routing to react to failure in the network and there is measured the reaction time of crossing to secondary route when using different routing protocols. Another part of the thesis is focused on the questions of Quality of Service (QoS) and its support in computer networks. There are explored various ways of the QoS configuration on the routers and the proper of them is chosen and applied to the test network.
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Wireless temperature sensor with high temperature warning indicator
Dvořák, Petr ; Petržela, Jiří (referee) ; Hruboš, Zdeněk (advisor)
This thesis deals with a proposal of a wireless temperature-sensitive element at high temperature. It analyses some different variants of the temperature sensors. Furthermore, the thesis describes the Industry Science Medical (ISM) bands, in which it will be possible to communicate with the wireless communication modules. These wireless modules are discussed and described. By the devices „the transmitter and the receiver" it is focused on the communication of the microcontroller Atmel with the wireless modules, with the temperature sensors, microswitches on the control and display unit (LCD).
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Small Unmanned Aerial Vehicle for vegetation monitoring
Trojánek, Tomáš ; Pejchar, Jan (referee) ; Dvořák, Petr (advisor)
The aim of this thesis was to select the most appropriate platforms for the fulfillment of required flight mission. The first part reviews available unmanned vehicles suitable for vegetation monitoring and includes both commercially available and self-made types. There are presented basic parameters, recommended equipment and tested configuration of each platform. The second part includes graphical comparison of all models in different categories and the most suitable platform has been selected on its basis. The model project which is based on the selected platform is presented in the final section.
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Nanophotonics
Dvořák, Petr ; Rezek, Bohuslav (referee) ; PhD, Jakub Dostálek, (referee) ; Šikola, Tomáš (advisor)
This thesis deals with an experimental research of the surface plasmon polaritons (SPPs) using Scanning Near-field Optical Microscopy (SNOM). The first chapter provides theoretical background and a description of most of the physical phenomena and relevant dependencies studied in this work. These dependencies include the dependence of the resulting SPP image on homogeneity, polarization, wavelength and phase of the illumination, on the geometry of the interference structures and on the tilt of the sample with respect to the illumination. Further, this work presents a new experimental method which, using the numerical simulations or SNOM measurements, allows to estimate the sensitivity of SNOM probe to detect the individual electric intensity components of the near-field. At the end of the thesis, the work presents a new microscopic technique which enables a 3D quantitative imaging of phase distribution above the plasmonic metasurfaces.
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Aprotic electrolytes for supercapacitors
Musílek, Václav ; Knotek, Tomáš (referee) ; Dvořák, Petr (advisor)
This master´s thesis deals different types of the aprotic electrolytes for supercapacitors and investigates by impedance spectroscopy to conductivity and method cyclic voltametry to measure dimension potential windows. Used aprotic solvents: propylencarbonate, dimethylsulfoxide, N, N dimethylformamide, ethylencarbonate, dimethylcarbonate, diethylcarbonate and acetonitrile. In the aprotic solvents were appended salts: LiClO4, NaClO4, KClO4, LiBF4, LiPF6, TEABF4 and TMABF4. From these compounds were prepared solutions with the different molar concentrations.
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Fabrication and characterization of plasmonic nanostructures
Bačo, Ondřej ; Kvapil, Michal (referee) ; Dvořák, Petr (advisor)
This bachelor thesis deals with fabrication and characterization of plasmonic nanostructures. Graphene on a doped silicon substrate with a 285 nm thick layer of silicon dioxide was used for fabrication of these structures. Graphene ribbons with width in the order of hundreds of nanometers were prepared using electron beam lithography (EBL) and reactive ion etching (RIE). Steps in fabrication process were monitored utilizing optical and atomic force microscopy (AFM). Prepared graphene nanostructures were characterized with scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FTIR).
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