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Indoor positioning system
Celeng, Michal ; Mašek, Jan (referee) ; Levek, Vladimír (advisor)
The work deals with the issue of indoor positiong system in the enviroment of the Android operating system, based on the efficient standard Bluetooth Low Energy, with conjunction of bluetooth beacons. The outcome of master‘s thesis is system topology, description of its components, standards needed for his creation and finally construction of the system.
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A Design and Development of a Power Supply for Laptops in Ordinary Motor Vehicles
Urban, Michal ; Levek, Vladimír (referee) ; Šťáva, Martin (advisor)
Cílem této práce je navrhnout a sestavit napájecí zdroj pro notebooky různých výrobců pro použití v osobních a nákladních automobilech a na motocyklech s výstupním výkonem až 120W. Výsledný zdroj obsahuje USB-C konektor pro podporu napájení notebooků a chytrých zařízení s podporou Power Delivery, dále USB-A konektor s podporou Quick Charge 3.0 a také 12V automobilovou zásuvku pro možnost připojení dalšího automobilového příslušenství. Napájecí zdroj dále disponuje ochranou proti přepětí a přepólování vstupního napětí a také ochranou proti přetížení jednotlivých výstupů. Součástí zařízení je také LED displej, který uživateli umožňuje pomocí vstupního rozhraní jednoduše nastavit výstupní napětí pro notebook a sledovat aktuální hodnoty všech výstupů. Pro nastavování výstupu, indikaci a ochrany je použit mikrokontroler Arduino Nano.
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Driver for ultra-bright white LED
Heralecký, Lukáš ; Čožík, Ondřej (referee) ; Levek, Vladimír (advisor)
The aim of this thesis is to study the possibilities of controlling high-brightness white LEDs using circuits operating at high voltages. The job itself is a division of existing light sources and mainly focus on semiconductor technology LED. The following describes the voltage of DC / DC and AC / DC. The work contains a description of the three high-voltage inverters are designed for power LEDs. Finally, it created a draft scheme of the PCB. As a control circuit is chosen ATMEGA 162 microcontroller from Atmel and source for LED diode is formed HV9910 and HV9861 circuits.
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Home automation, input and output modules
Ponechal, Mikuláš ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
The bachelor´s thesis mediates theoretical analysis of home automation using IoT application. The aim of the thesis is to desing input and output modules to make controlling of electronic devices easier for user. The first chapter describes wireless technologies which are mostly used in IoT applications, principles of measuring current in order to determine energy consumption and ways how to dim lights. The second chapter includes design of wireless communication between the modules and a central control station and specific module designs. The third chapter deals with the construction and testing of hardware modules.
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Three-way control valve in industrial environment
Vozár, Viliam ; Čožík, Ondřej (referee) ; Levek, Vladimír (advisor)
This work deals with the design, realization and testing of the system for regulating the temperature of the water in an industrial environment using three-way mixing valve. This system can work autonomously, but also can be controlled by a superior control system. Created temperature regulation can be adjusted and controlled by a computer using control software.
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FPGA implementation of PCS and PMA sublayer of 50Gb/s Ethernet
Suchanek, Michal ; Levek, Vladimír (referee) ; Bohrn, Marek (advisor)
The main goal of this thesis is to familiarize with 25/50 Gigabit Ethernet Consortium standard, which defines 50Gb/s Ethernet. Study about PCS and PMA sublayer specifications for Ethernet physical layer in 50GBASE-R mode. Describe and implement mentioned PCS and PMA sublayers in VHDL language for FPGA circuits and selected acceleration card. Verify correct functionality of physical layer through tests on given acceleration card.
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Wireless weather station
Filka, Tomáš ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This diploma thesis deals with a draft of wireless weather station, whose task is to measure basic values inside and outside the home. Measured variables are for example temperature, atmospheric pressure, relative humidity, wind speed and direction or concentration of carbon dioxide (CO2). These data will be transmitted to a web server for later processing. Possible technical solutions are described and the outcome is a designed printed circuit boards, which has been assembled and tested. Resulting system was tested in trial operation.
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Solar water heating controller
Kadlíček, Matej ; Levek, Vladimír (referee) ; Šteffan, Pavel (advisor)
This bachelor project deals with the creation of an effective system of regulation solar heating for swimming pool. creation of communication between the system and the server for transmission and processing measured data. The work includes software description of the system and hardware description of the created printed circuit boards. It is needed to think about the way of measurements, switching the load or display visualization. Due to better power consuption is also discussed the optimalization of the project.
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SAE J2716 SENT protocol signal driver
Mutina, Petr ; Levek, Vladimír (referee) ; Prokop, Roman (advisor)
This diploma thesis deals with design of SENT protocol output driver for automotive applications. Output driver is designed with respect to variability of output capacitance (in rage from 0 to 10 nF). Important feature of output driver is output signal shaping to limit electromagnetic interference. First chapter deals with theoretical analysis, current solution is discussed too. Second chapter of this thesis is focused on design of concept. In third chapter design of output driver is discussed, in last chapter simulation results of the design are presented.
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Home automation, control unit
Konečný, Jakub ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This bachelor's thesis focuses on theory about a home automation and represents the solution of the smart central server unit, designed to control wireless connected devices, read and display temperature, pressure, relative humidity data and set up automatic functions in graphical user interface. The work is more focused on the software section and describes the implementation of server technologies.
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