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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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Embedded system design
Gábor, Tomáš ; Galetka, Josef (referee) ; Götthans, Tomáš (advisor)
This work deals with application of ARM based development board as platform for remote controlling of attached peripherals. It describes practical experiences with A20- OLinuXino-Micro-4GB development board and it’s available options. Used hardware and testing peripherals are described in the next part along with programming of the software for web interface and for communication in between development board and peripherals. The second half of this document describes design process of own embedded system beginning with schematic, continuing with PCB wiring. Each step of PCB wiring process is described with required details in text, including crucial connections between processor and memory chips. The last part contains details about setting a calibration of memory chips and designing optional peripheral modules.
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Design and construction of weather station
Bílý, Stanislav ; Galetka, Josef (referee) ; Götthans, Tomáš (advisor)
This thesis is focused to design and implementation of wireless weather station. The first part deals with possibilities of measurement in meteorology. The next part of thesis includes the choice of suitable sensors and conception of device. The next part of thesis contains design of the schematic of outdoor station and control unit. The last chapter is focused to testing accuracy and measuring basic parameters of disigned conception.
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Speech switch for APD system
Hartmann, Lukáš ; Götthans, Tomáš (referee) ; Frýza, Tomáš (advisor)
This work describes design device that is used to connect voice speech lines in underground mines for APD system. Using the device, you can connect up to 60 speech lines up to sixteen independent communication group (circles). Each communication circle can be listen in by the operator, or he can initiate call from control board. Switching of individual lines is controlled using the utility on the computer that communicate with this device via serial port RS-485.
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Stereo audio power amplifier with microcontroller
Filko, Patrik ; Götthans, Tomáš (referee) ; Brančík, Lubomír (advisor)
This bachelor thesis deals with designing stereo audio power amplifier, which specified functions such as control of volume, depths, treble and balance, are contoled by 16-bit microcontroler with digital potentiometers. Setting those functions is pictured on simple LCD display. Opted amplifier is easy to control ergo it finds use in wide spectre of audio devices such as ampliffing input signal from transmission audio media player or audio signal in television devices. Used design is able to be realized of easy to get components.
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Communication network for a swarm of unmanned aerial vehicles
Rajm, Jan ; Götthans, Tomáš (referee) ; Janoušek, Jiří (advisor)
This bachelor thesis deals with creation of robust communication network used within swarm of unmanned aerial vehicles and its testing. In the first part, network requirements are presented and selected communication standards capable of transmitting telemetry data are described. The second part describes the software needed for telemetry data transmission and drone control. The third part presents designed communication network for a swarm of drones. Capabilities and differences between the designed network and networks based on other network technologies are presented. Also, the creation procedure of the designed network is described. The fourth part deals with a testing and an evaluation of results.
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Quadrocopter realization
Pekarovič, Ján ; Galetka, Josef (referee) ; Götthans, Tomáš (advisor)
This thesis deals with the design of a helicopter with four rotors known as quadcopter. It describes the principles of operation and existing modifications. Part of the work is the selection of a suitable frame, remote control set, engines and propellers, battery, sensors for stabilization and detection of obstacles and microcontroller for their operation. The paper presents the concept of the specific copter design, design and simulation of printed circuit boards to their self-production, activation and testing. The final part of the thesis includes an economic assessment of the project and its comparison with competitors.
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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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