|
|
FPGA Implementation of RMAP Initiator and Target
Walletzký, Ondřej ; Fujcik, Lukáš (referee) ; Dvořák, Vojtěch (advisor)
The thesis deals with design and implementation of controllers for the RMAP protocol, which is used by SpaceWire network endpoints to access memory contents of another endpoint. The theoretical research introduces concepts of the SpaceWire network, then describes the RMAP protocol and the AMBA AHB bus interface in detail. The practical part of this thesis then uses this information to design and implement controllers for the RMAP protocol. It first defines an architecture of these controllers, then describes design of individual blocks based on this architecture. As a next step, the thesis describes methods used to verify designed controllers and to test these controllers in an FPGA chip. Finally, an analysis of maximum frequency and usage of FPGA resources is done based on estimates provided by the synthesis tool.
|
|
|
Air Traffic Simulation with HackRF One
Mikan, Lukáš ; Dvořák, Vojtěch (referee) ; Šťáva, Martin (advisor)
Práce se zabývá problematikou simulace letového provozu v kontextu multilateračního přehledového systému. Technika multilaterace počítá polohu letounu coby průsečík hyperboloidů na základě rozdílů v čase příchodu zpráv z palubního transpondéru na různé pozice přijímacích antén. Při nahrazení každé antény SDR modulem lze vzdušný provoz nasimulovat pomocí umělých ADS-B zpráv, které jsou ve správných časech přivedeny do jednotlivých anténních vstupů. V této práci je použito SDR HackRF One, jehož hardware i firmware byl modifikován pro dosažení úzce synchronizovaného vysílání z potenciálně libovolného počtu propojených HackRF jednotek. Zde popsané úpravy zajišťují shodný kmitočet i fázi vzorkovacího hodinového signálu na všech HackRF, stejně jako současné spuštění přenosu. Ve druhé části práce je představeno algoritmické řešení umožňující sestavit fiktivní vzdušný scénář s libovolným počtem letů i přijímacích antén. Výstupem je sada datových streamů vhodná pro vyslání skrz synchronizovaná HackRF. Každý stream odpovídá specifické poloze antény v krajině a obsahuje přesně načasované zprávy standardu ADS-B, zakódovány pulzně-poziční modulací a převedeny na IQ vzorky. Celý systém umožňuje testovat správnou funkci reálného multilateračního sledovače, jako je například produkt MSS od firmy ERA, a.s.
|
|
|
Spectrum analyzer based on ASIC
Eliáš, Josef ; Dvořák, Vojtěch (referee) ; Pristach, Marián (advisor)
This term project is focused on a design of spectral analyzer based on fast Fourier transform. There is sigma-delta analog to digital converter realized on Department of Microelectronics as ASIC. FFT was implemented into Spartan S3 board kit. This kit is based on FPGA from Xilinx Company that provides various optimized components for his FPGA. Depending on this component was created FFT 10th order in 10 bit resolution. Results are displayed on VGA monitor.
|
|
|
Radar receiver beamforming implementation in FPGA
Bárta, Jakub ; Dvořák, Vojtěch (referee) ; Bohrn, Marek (advisor)
This thesis deals with design and implementation of digital beamformer for 3D radar. The text of this thesis contains derivation of beamforming algorithm and detailed description of it’s implementation on development kit with Cyclone V circuit. At the end of the thesis the beamformer design is verified and it’s further usage is discused.
|
|
|
Autonomous bathroom airconditioner system
Zapletal, Ladislav ; Dvořák, Vojtěch (referee) ; Pavlík, Michal (advisor)
The work deals with the design, theoretical analysis and implementation procedure of the system, which according to the collected data adequately switch heating mirrors pads, exhaust ventilation system, and according to the needs open and close the heating valve to work as a thermostat. The aim was to construct a system that is based on obtained data to separately switch peripherals according to set values and so respond to the current changes of climatic conditions in the measuring point. The work also explains the components of the device and their mutual involvement. It also lists examples of program code that were used to create algorithms in microcontroller and PC applications.
|
|
|
Unified verification environment for digital part of automotive mixed-signal integrated circuits
Petráš, Samuel ; Dvořák, Vojtěch (referee) ; Prokop, Roman (advisor)
This thesis is concerned with unified verification environment for the verification of small designs of the digital part of integrated circuits with mixed signals. By unified verification environment is meant an environment suitable for both simulation and emulation. The first chapter describes the current verification methods of such designs. The second chapter presents the requirements that emulation places on the verification environment implemented according to the Universal Verification Methodology (UVM) and the attached implementation of proposed environment. The third chapter contains practical knowledge gained during the implementation of the unified verification environment, problems and their solutions, as well as several comparisons between simulation and emulation.
|
|
|
Design of bandpass digital filter
Dvořák, Vojtěch ; Pristach, Marián (referee) ; Fujcik, Lukáš (advisor)
The aim of this work is to explain the problems of digital IIR filters, demostrate process of designing digital filters in Matlab and design a model of ideal band-pass filter with concrete parameters in Matlab. This filter will then serve as a reference model for verification with the filter described in VHDL.
|
|
|
Novel Method to Evaluate Signals from Absolute Position Encoder
Dvořák, Vojtěch ; Husák, Miroslav (referee) ; Maschke, Jan (referee) ; Fujcik, Lukáš (advisor)
The thesis is focused on development and implementation of novel method to estimate position with absolute position encoder utilizing Vernier principle. The novel method was developed to ensure higher reliability of position estimation in applications where characteristics of position sensors are affected by environment or due to ageing of components in lifetime. In the first part of the thesis, an overview of common methods to evaluate signals of position encoder is provided together with analysis of their limits in case of drift of characteristics of position sensor itself. The novel method is derived and deeply analysed in the second part of the thesis and reference implementation into FPGA circuit is presented. The last part of the thesis summarizes tests conducted to verify functionality and properties of the novel method in real application.
|
|
|
Awarness of Primary School Teachers About The Child Abuse and Neglect Syndrome
Dvořák, Vojtěch ; Klapálková, Veronika (advisor) ; Lindová, Markéta (referee)
The topic of the bachelor thesis is the issue of Child Abuse & Neglect (CAN) syndrome and the awareness of elementary school teachers regarding this issue. The thesis focuses on determining whether teachers are adequately prepared to detect, address, and prevent cases of child abuse, exploitation, and neglect, and whether they have sufficient knowledge about the various forms of CAN syndrome and its specific manifestations. The theoretical part of the thesis deals with defining and describing different forms of CAN syndrome and the risk factors that can contribute to its development. This section also outlines the qualification requirements for teachers working at the lower secondary level of primary schools. The research part of the thesis focuses on surveying elementary school teachers. Through a questionnaire survey, it examines whether teachers are capable of defining the forms of CAN syndrome and whether they have encountered cases of child abuse, exploitation, and neglect in their practice, as well as how they were prepared to address this issue. The aim of this section is also to determine whether the teachers perceive the prevention of CAN syndrome in elementary schools as sufficient. Keywords: CAN syndrome, CAN syndrome prevention, teacher education, lower-secondary schools
|
|
|
Charger for portable devices
Bujdák, Adrián ; Dvořák, Vojtěch (referee) ; Boušek, Jaroslav (advisor)
The thesis concerns the design of a portable charger with support for fast charging of modern devices. It includes DC/DC converter design, lithium cell voltage equalization and protection system, and microcontroller programming. Lithium cells connected in series are used as energy storage, main parameters such as temperatures, currents and voltages of various parts of the device are monitored using a microcontroller and then displayed on a display.
|
guest ::
