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Low Energy Bluetooth Localization
Šlígl, Jan ; Nykodým, Jiří (referee) ; Götthans, Tomáš (advisor)
This diploma thesis is focused on design of localization device using Bluetooth 5.2 with low power consumption. Localization is performed using created devices forming a beacons and designed application for mobile phone. Also design of multiple types of antennas with different directional radiation pattern, gain and size. Design is mostly focusing on low power consumption and compact independent device.
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DAB Radio Receiver
Pišťák, Ondřej ; Götthans, Tomáš (referee) ; Dřínovský, Jiří (advisor)
This work is focused on design and construction of software defined radio that can play DAB+ standard. The received signal is processed by USB receiver RTL-SDR BLOF with 8 bits resolution A/D convertor RTL2832U and small single-board computer Raspberry Pi 3 (Model B). The work deals also with design and realization of control panel by which the radio is controlled. The LCD display is connected to Raspberry Pi and used for the screen information about currently playing radio program.
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Radio Modulation Recognition Networks
Pijáčková, Kristýna ; Maršálek, Roman (referee) ; Götthans, Tomáš (advisor)
Bakalářská práce se zabývá klasifikací rádiových modulací pomocí metod hloubkového učení. V práci jsou navrženy čtyři architektury, kde tři z nich jsou tvořeny pomocí konvolučních a rekurentních neuronových sítí a čtvrtá využívá architekturu transformátorů. Při návrhu architektur byl brán v potaz výsledný počet parametrů jednotlivých sítí, který může výrazně ovlivňovat výslednou velikost sítě. Pro účely návrhu byl využit programovací jazyk Python a knihovna Keras, která umožňuje práci s neuronovými sítěmi. Výsledky práce jsou následně zhodnoceny a porovnány s výsledky sítí navržených v článcích zabývajících se tímto tématem.
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Adaptation of digital predistorter to linearize amplifiers using comparator
Jagla, Lukáš ; Ayöz, Suat (referee) ; Götthans, Tomáš (advisor)
Diplomová práce pojednává o návrhu nového hardwaru využívající komparátor ve zpětné vazbě systému pro digitální předzkreslování signálu. Vybrané vlastnosti navrhované architektury jsou ověřeny pomocí simulací a následně jsou zvoleny komponenty vhodné pro vysokofrekvenční použití za účelem implementace. Na bázi předložené architektury je navržen akviziční modul včetně obvodové realizace a vytvoření plošného spoje. Zhotovený plošný spoj je osazen a připraven pro další testování. Dále je navržen příslušný firmware pro příjem a vysílání signálu a získávání naměřených dat. Obdržené výsledky jsou určeny pro zhodnocení vlastností hardwaru a budoucího využití architektury v systémech digitálních předzkreslovačů.
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Industrial low complexity Ethernet system
Šustek, Vladimír ; Götthans, Jakub (referee) ; Götthans, Tomáš (advisor)
The diploma thesis is focused on the building embedded demonstration application of the proprietary Low Complexity Ethernet module for industrial usage further called the LEN/LES 2. At the first, main used technologies such as MCU, or the lightweight IP stack is discussed, Consequently, there is detailed view on system hardware architecture proposed by hardware and software requirements. Then though part describes blocks of embedded system are in term of specific parts and hardware requirements to create universal board. Following chapters expresses first startup and known hardware bugs, LWIP implementation and MODBUS system implementation. The core of the system is the new released microcontroller an ADuCM4050 and the Low Complexity Ethernet MAC-PHY prototype block and much more dependent convenient peripherals of the MCU based application.
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Interface Between Matrix and Graphic LCD
Hartmann, Lukáš ; Svoboda, Roman (referee) ; Götthans, Tomáš (advisor)
This work describes design interface between matrix with controller HD44780 and graphic LCD. This device replace 2x20, 4x20, 4x40 character display. Character which should be displayed are send through a parallel interface, such as matrix display, or send through SPI bus. Communication line RS-485 are used for set language character set. Language character sets are saved into external flash memory.
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Design and realization of switching class audio power amplifier
Levocký, Kristián ; Götthans, Tomáš (referee) ; Brančík, Lubomír (advisor)
This bachelor thesis describes design of audio amplifier of class D with power 2x100W. Power part is designed with integrated circuit TAS5630B made by Texas Instruments and correction preampifier unit is regulated by four potentiometers , controled by integrated circuit TDA1524A. Switching supply is regulated by circuit TOP261EN. Whole device is installed in device box with graphic display and control components.
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WirelessHART sensor node
Řežucha, Tomáš ; Dřínovský, Jiří (referee) ; Götthans, Tomáš (advisor)
The master’s thesis is focused on building WirelessHART node demo and on a description of WirelessHART standard, which is used in wireless sensor networks. Out of the comprehensive WirelessHART specifications firstly, the two lowest layers of OSI networking model are described: physical and data link layer. Secondly, burst mode and device variables are described to provide necessary information for data publishing in the network. The mote is assembled according to hardware and software requirements of WirelessHART demo system. The node is complemented by its firmware and PC application demonstrating its features in a user-friendly manner.
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Multifunction Sensor
Tománek, Jakub ; Götthans, Tomáš (referee) ; Dřínovský, Jiří (advisor)
The aim of the diploma thesis is to get acquainted with possibilities of realization of a multifunctional sensor for agricultural purposes. The theoretical work deals with the principles of measurement of environmental variables. Subsequently, sensors are selected which can measure the environmental variables. The thesis discusses the possibilities of wireless communication. Attention is paid to the communication modules of the DIGI® manufacturer. The main part describes the physical implementation of the multifunctional sensor. Here is a detailed breakdown of what components are selected for implementation with adherence to general implementation requirements. At the end of the work is described a program serving multifunctional sensor.
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Vibrational energy harvesting demonstrator
Uhliar, Marek ; Götthans, Tomáš (referee) ; Mrnka, Michal (advisor)
The aim of the thesis is to solve the problem of energy collection from vibrations, transformation into electric energy, which can be suitably used by the end device. In the next section, the reader is acquainted with possible circuits that can be used to process the collected electrical energy. The last part of the thesis deals with the design of the auxiliary circuits for energy collection and with the design of the demonstration device, which will use the converted energy to measure the air temperature and humidity. The measured values will then be displayed on the LCD.
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