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Educational PocketQube Satellite
Veverka, Jiří ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
Tato diplomová práce je zaměřena na návrh výukového satelitu typu PocketQube 2P (50x50x100mm) a pozemní stanice, které budou využívány ve výuce STEM laboratoří. Navržený systém byl navržen s důrazem na modularitu, snadnou výměnu za použití komerčních volně dostupných součástek a snadné pochopení subsystémů, které lze v družici tohoto typu nalézt, tedy palubní počítač, komunikační modul, napájecí systém a payload. Mimo vnitřních modulů byla vyvinuta i vnější konstrukce, která je celá vyrobena z desek plošných spojů a dohromady tvoří základ družice. Vyvinutá družice a pozemní stanice využívají ke komunikaci rádiový modul RFM98W s modulací LoRa.
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Applicability of Low-Cost Picosatellites
Roman, Maroš ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
Tato práce zkoumá využitelnost platforem picosatelitů nebo femtosatelitů ve vzdělávání. Popisuje se zde návrh femtosatelitové platformy jménem Femtostrat-1, která může sloužit jako vzdělávací nástroj pro univerzitní laboratorní cvičení. Platforma je navržena tak, aby obsahovala všechny systémy, které se očekávají na skutečné satelitní platformě. Jsou probírány možnosti využití této platformy, včetně různých metod vypuštění nebo různých komunikačních standardů. Navíc tato práce práce popisuje návrh a realizaci letového modelu Femtostrat-1. Na závěr je popsán stratosférický testovací let Femtostrat-1 a výsledky tohoto letu.
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Educational Nanosatellite in PocketQube Format
Lokaj, Jakub ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
Hlavním tématem této diplomové práce byla teoretická analýza současných trendů ve vývoji nanosatelitů, konkrétně se zaměřením na formát PocketQube a jeho aktuální implementaci. V jednotlivých teoretických kapitolách se práce zabývá možnostmi a výhodami využití PocketQube jako výukového modelu pro vzdělávací a vývojové oblasti. Zabývá se také možnostmi 3D tisku nosné konstrukce družice a rozebírám jednotlivé komponenty, jako je palubní počítač, komunikační systém založený na technologii LoRa, napájecí systém a přehled subsystémů. V praktické části byl vyvinut rám družice, jednotlivé části struktury elektroniky PocketQube a implementace základní funkce komunikace a provozu pro vzdělávací model PocketQube.
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Digital Signal Processor for Handheld RFID Reader
Benetka, Miroslav ; Zamazal, Michal (referee) ; Šebesta, Jiří (advisor)
This diploma thesis deals with design and realization of a module for a digital signal procesor, for handheld RFID reader working in UHF band. It utilises a special chip EM4298 for RFID signals processing. Module is controlled by the microcontroller ATmega32L, which communicates with the PC through USB bus. Settings in EM4298 is made by a service program which processes received identifying data obtained from tags. Source codes for microcontroller are created in AVR Studio 4.13 program. Source codes for microcontroller are created in C++ Builder 6.0 program. Further thing is Desing and realization of analog interface and a UHF transceiver for wireless communication with tags. A Webench program was used for the analog interface design, which is freely available on the internet. For verification of parameters of the analog interface it was used PSpice 10.0 program. The UHF transceiver is build-up with a MAX2903 chip (transmitter) and AD8347 (receiver) and transmitting and receiving antennae.
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HW interface of database server
Janů, Petr ; Zamazal, Michal (referee) ; Fuchs, Michal (advisor)
The aim of master's thesis is implementation of hardware interface database server. Interface will be collecting data at installation place. Interface will be connected to a remote MySQL server using an Ethernet network and saving data received by serial line in a database.
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Design and implementation of educational CubeSat
Košút, Martin ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
This thesis describes the design of a CubeSat with a 1U (10x10x10 cm) size, which will be used in laboratory tasks. It includes mechanical construction printed on a 3D printer with six photovoltaic cells, mounted on the top. Cells will produce electricity to power all systems and to charge the onboard NiMH batteries to make the CubeSat independent of other sources of energy. The proposed design of an electrical power supply system and an onboard computer combined with a communication system is based on off the shelf components. The two-way wireless communication link between computer and a CubeSat is realized thanks to the ground station, which is also part of a design. Students will make other systems, which will communicate with the built in onboard computer via internal RS 485 communication bus. Internal EEPROM memory is used to save measured values. Modularity, possible future expandability, and easy repair in case of any failure were the key optimization parameters of the design.
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SDR-based UHF RFID communication analyzer
Vychodil, Josef ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
Main topic of this thesis is development of software for capture and analysis of RFID communication in UHF band (standard EPC Class-1 Generation-2). One part of the work is focused on the basics of the RFID systems, software defined radio concept and graphical programming language LabVIEW. Main part of this thesis is discussing the developed software itself, its methods and principles. Next part is dedicated to present the graphical user interface of created application and its functionality. Last part of this thesis contains examples of captured and analysed processes in UHF RFID communication.
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Signal Processing for UHF RFID Reader
Novotný, Jan ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
The master’s thesis is focused on the UHF RFID reader EXIN-1 signal processing. The first part describes the concept of the EXIN-1 front end, its basic testing and possible communication interfaces for reader control and for receiving and transmitting baseband signals. The second part of this work is aimed to a simple description of EPCglobal Class-1 Generation-2 UHF RFID Protocol, especially to used modulations and codings. In the last part, a block connection between the front end and an ARM Cortex-M4 microcontroller discovery board is designed. The microcontroller is used for generating of all required signals and also for receiving incoming signals and processing them for identification numbers of RFID cards (tags), which are in the reading range of the reader. A decoding algorithm is designed in MATLAB software and implemented to the selected microcontroller. Obtained identification data are displayed on an LCD display and also sent to a PC through a serial communication.
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WiFi and BT monitoring tool
Zelený, Miroslav ; Zamazal, Michal (referee) ; Valach, Soběslav (advisor)
This bachelor thesis deals with possibilities and ways of detection of devices using Bluetooth or Wi-Fi technology, with the possibility of future use for monitoring of human movement. Detection is only in the 2.4 GHz band. It introduces Wi-Fi and Bluetooth technology and their detection. Device detection was performed using Kismet software and Raspberry Pi platform.
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UHF RFID tag emulator
Janošík, Tomáš ; Zamazal, Michal (referee) ; Vychodil, Josef (advisor)
This thesis deals with the design of external backscatter modulator for RFID tag emulator, which is used in UHF band. This modulator is connected with the Universal Software Radio Peripheral and antenna. Realization of a backscatter modulation contains switching between a matched load and an unmatched load. Impedance of the unmatched load is continuously adjustable. Result of this thesis is function prototype.
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