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Experimental Platform for Free-Space Optical Communication in Water
Kousal, Martin ; Fedra, Zbyněk (referee) ; Král, Jan (advisor)
For the needs of underwater drones and seabed exploration, a live image from a camera mounted on the drone needs to be transmitted to the operator. Therefore, a hardware platform has been developed to research and experimentally verify the possibilities of cable-free optical communication in an aquatic environment. In this paper, the possibilities of communications in aquatic environments and their limitations are discussed. Furthermore, a communication chain of transmitter and receiver is designed and then simulated in Python. This proposed communication chain is then implemented. The FPGA configuration of the transmitter and receiver is described, and handlers and scripts are created to receive and process the transmitted signal. Finally, real measurements are performed in air and also mainly in a water environment, where the functionality of the whole chain is verified. In the last part of the paper, possible improvements and their impact on the whole platform are outlined.
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Electronics for Scintillator Detector Readout and Coaxial RF Line for VITO Beamline at ISOLDE Facility at CERN
Havránek, Daniel ; Valúch,, Daniel (referee) ; Král, Jan (advisor)
VITO (Versatile Ion polarisation Technique Online) beamline experiment se zabývá měřením hyperjemných struktur. Pro jejich měření se využívá RF (Radio Frequency) spektroskopie. Pro RF spektroskopii je nutné navrhnout a simulacemi ověřit aparaturu pro vytvoření interakční oblasti RF a atomového/iontového svazku umožňující RF spektroskopii krátce žijících radioaktivních atomových/iontových svazků s nízkou energií. Důraz je kladen na uniformní rozložení RF pole. Kvůli potřebě uniformního rozložení RF pole je návrh zaměřen na přenosové vedení typu stripline a kvůli nízké energii krátce žijících radioaktivních svazků je jako dielektrikum zvoleno vakuum. VITO beamline se rovněž zabývá -NMR (Nuclear Magnetic Resonance). -NMR je vysoce přesná metoda určení magnetických momentů krátkodobě žijících isotopů s využitím částic vyzářených při při rozpadu izotopů. Tato diplomová práce se rovněž zabývá návrhem elektroniky pro nový detektor, který bude využit pro -NMR beamline VITO v ISOLDE (Isotope mass Separator On-Line facility) zařízení v CERNu (Conseil Européen pour la Recherche Nucléaire).
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Platform for Digital Predistortion Based on RFSoC
Kříčka, Tomáš ; Maňas, Ondřej (referee) ; Král, Jan (advisor)
Signal predistortion occurs in modern communication systems and in other systems requiring linear signal amplification. The objective is to learn about signal predistortion, the QORVO 1800 MHz FDD radio front-end and to implement the front-end control using Matlab computer program. I focus on controlling individual attenuators and amplifiers on the QORVO front-end with a program written in C. Using a single board computer Raspberry Pi 4B running Linux. Furthermore, the work involves the application of a SCPI server that operates based on TCP packets. As part of the introduction to the front-end, the power characteristic of the power amplifier is measured.
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Social Network Analysis and Simulations
Vorlová, Pavla ; Král, Jiří (referee) ; Samek, Jan (advisor)
This diploma thesis is focusing on description of processing social network analysis, design and implementation of a model that simulates a particular social network and its analysis. Social networks are modern and very used in this time. They are very good point for exploring. This project deal with static analysis social network, where social network is constructed by graph. We nd out di erent properties of single component and than we establish signi cance of them. Relationships between components are important too for us, because they have a big influence on propagation information in network. Structural properties figure out existence of di fferent communities. We simulate social network with multi-agent systems, they are desirable for represent changes in network. Multi-agent systems have implemented a simulation model that represents a particular social network. His behaviour was analyzed and examinated by chosen methods.
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A Family Hause with a Dental Office
Hrdý, Jakub ; Král, Jakub (referee) ; Skála, Jiří (advisor)
This bachelor’s thesis deals with project of a new family house with a dental office which is situated in the cadaster unit of the town of Boskovice. Family house with a dental office is two-floor, basement with disabled garage for two cars. The house is designed for a four-member family, where is situated a dental office for one doctor and nurse. House’s walls are build with blocks Porotherm profi 50, the blocks have mineral wool and the object is not insulated by the contact system . The horizontal construction are consist with POT beams and ceiling inserts MIAKO. Disabled house have one-cloak flat roof. This bachelor’s thesis has the formo f disign documentation for the building process.
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Apartment house Olympus
Filipčík, Martin ; Král, Jakub (referee) ; Sedláková, Markéta (advisor)
The aim of the bachelor’s work is composition of project documentation for construction of apartment building. Object is situated on the cadastral area of Třebíč, number of bulding plot is 1037/28. Building plot is situated in the location Na kopcích on the eastern part of city. Terain is mostly planar. In the apartment bulding there are three above-ground floor and one below-ground floor. In the below-ground floor there are situated storage spaces, bicycle storage, workshop, cleaning room, storage room and technical space. In the first above-ground floor there are situated two flats and four garages. In the other below-ground floor there are always situated two flats on the floor. Structural system of this building is wall system. External below-ground wall be composed of concrete blocks and thermal insulation. External above-ground wall and inside wall be composed of lime sand blocks. Object have an external thermal contact insulation. Floor structure is designed as a cast-in-place two reinforced slab. Staircase is designed as cast-in-place reinforced construction too. The roof of the bulding is flat. Floor construction are designed as floating floor.
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Power supply for acquisition and communication subsystem of a current transformer
Beran, Tomáš ; Král, Jan (referee) ; Kubíček, Michal (advisor)
This bachelor thesis is focused on designing a power supply for measuring part and communication part of a device, which is supposed to analyze current waveforms on high voltage lines. The power supply consists of a current transformer, control electronics, and accumulation elements. The thesis analyzes the current waveforms on high voltage lines to get an overview of input data so that the right current transformer can be chosen. A working principle of these transformers is described, as well as the options for accumulation elements. Power supply requirements for the power supply are determined as well. The next part of the thesis summarises this theoretical knowledge and applies it to the schematic design. This is followed by a description of the schematic with an included description of function blocks. Additional adjustments that would improve the power supply's properties might be mentioned. This will be followed by designing a PCB layout. The final part includes the manufacturing process and determination of parameters like power, efficiency, etc. In the manufacturing process, the PCB will be printed, soldered, and evaluated on an electrical test. The electrical test inspects the functionality of the designed power supply by simulating real-life scenarios of high voltage lines. At last, an impact of the power supply on the measuring system will be analyzed.
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Energy efficient terraced house
Král, Jakub ; Bečkovská, Tereza (referee) ; Bečkovský, David (advisor)
The aim of my diploma thesis is a design of a new energy efficient terraced house in the gap site. Building has two dwelling unit of category 4+kitchenette and 6+ kitchenette. Building has a cellar, two floors and an attic. The cellar structures and horizontal structures are made of reinforced concrete. Sand-lime bricks are used for masonry. The building is covered with gabled roof with timber roof truss. In this building there are used rainwater and renewable energy in a form of electrical energy made by photovoltaic panels.
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Agent Based Gameplaying System
Trutman, Michal ; Zbořil, František (referee) ; Král, Jiří (advisor)
This thesis deals with general game playing agent systems. On the contrary with common agents, which are designed only for a specified task or a game, general game playing agents have to be able to play basically any arbitrary game described in a formal declarative language. The biggest challenge is that the game rules are not known beforehand, which makes it impossible to use some optimizations or to make a good heuristic function. The thesis consists of a theoretical and a practical part. The first part introduces the field of general game playing agents, defines the Game Description Language and covers construction of heuristic evaluation functions and their integration within the Monte Carlo tree search algorithm. In the practical part, a general method of creating a new heuristic function is presented, which is later integrated into a proper agent, which is compared then with other systems.
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