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The motor drive control of the gas insulated disconnector of ABB switchgear
Kyseľ, Martin ; Ficek, Jan (referee) ; Orságová, Jaroslava (advisor)
This bachelor's thesis focuses on addressing the issue of controlling three-position disconnectors in gas-insulated switchgear by ABB. The aim of the thesis was to create drawings for three-position control methods and analyze their properties. The introduction provides a detailed analysis of the structure and components of gas-insulated switchgear. It further examines the issue of three-position disconnectors and their various control methods. The practical part of the thesis deals with the design of standardized control circuits for disconnector motor drives, which efficiently utilize space and optimize costs. The individual circuits were compared to select the most suitable replacement for the original control system. A model was created to verify the functionality of the proposed solutions, serving to demonstrate their operation.
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The library for working with sensors allowing distributed processing in FORTH language
Kudela, Kryštof ; Valach, Soběslav (referee) ; Jirgl, Miroslav (advisor)
This bachelor's thesis focuses on the Forth programming language, Forth distributions, smart sensors, distributed systems, and distributed computing. The aim of this thesis is to provide an introduction to the Forth development platform, starting with the basics of Forth programming. It also includes an overview of the eForth, FlashForth, and AmForth operating systems. The theoretical foundations of distributed systems and computations are presented, accompanied by an example of a distributed task. As part of this thesis, a network in the Forth language is created, enabling the implementation of distributed computations using smart sensors.
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Portable digitally controlled function generator
Graf, Daniel ; Kufa, Jan (referee) ; Kolář, Ondřej (advisor)
Tato bakalářská práce se věnuje návrhu desky plošných spojů a sestrojení přenosného digitálně ovládaného funkčního generátoru při využití AD9833 integrovaného obvodu přímé digitální syntézy. Generátor je schopný generovat tři typy výstupních průběhů (harmonický průběh, trojúhelník a obdélník), přepínat mezi výstupní impedancí (módy 50\,$\Omega$ a HighZ), generovat průběhy do frekvence až do 12,5\,MHz. Zařízení také umožňuje změny amplitudy a přidávání DC offsetu. V teoretické části je popsán postup, kterým bylo zařízení navrženo a jakým způsobem bylo zamýšleno, aby zařízení fungovalo. Popsán je výběr vhodných bateriových článků pro takové zařízení, výběr vhodného mikrokontroleru, základy teorie přímé digitální syntézy nebo návrh analogového konce pro nastavení amplitudy a DC offsetu. Aplikační část již popisuje, které součástky byly vybrány, které problémy se vyskytly a jakým způsobem byly problémy vyřešeny, jakým způsobem je provedeno ovládání, rozhraní zařízení a jak byl naprogramován software pro tuto aplikaci, která umožnuje ovládání zařízení pomocí počítače přes sériový terminál díky naprogramovanému SCPI protokolu. Kapitola Měření se zaobírá nejen výsledky jednotlivých měření, ale také řešením komplikací, které se objevily kvůli chybě v návrhu desky plošných spojů. V této kapitole jsou uvedeny schémata, grafy a tabulky výsledků měření, zhodnocení měření a následovné porovnání výsledků zařízení s komerčními možnostmi na trhu.
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Universal Measurement Interface for Digital Audio Signal
Gál, Marek
This article deals with a modification of existing project which is used as a helpful tool for tracking and measuring digital audio interface I2S. Modifications are based on practical one year experience when the device was tested and deals with new requirements for extension.
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Design of complex sensor node for LoRa network
Obrtáč, Tomáš ; Sova, Václav (referee) ; Chalupa, Jan (advisor)
This thesis covers development of complex sensor for LoRa network. The thesis is extended by theoretical section, which explains basic properties of Lora network. Theoretical section also covers analysis of software and hardware products on market. The practical part of thesis is focused on creation of complex sensor and development of complete server for its operation. In the hardware part is described method of choosing the right sensors, designing the PCB and description of important parts. Software development is described from acquisition of network server, through creating the computer application, to programming the MCU.
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Indoor flexible wireless CO2 measure system
Válek, Vít ; Fiedler, Petr (referee) ; Arm, Jakub (advisor)
Monitoring of the carbon dioxide concentration in the building is carried out for several reasons. One is to ensure hygiene conditions. With the advent of Bluetooth 5.0 came the support of mesh network technology, which is defined by the Bluetooth Mesh standard. By implementing this standard, we can create an extensive network of devices monitoring the concentration of carbon dioxide in the building. Based on the monitored concentration, we can control the air conditioning and ventilation of the spaces, ensuring that the hygiene conditions are met. Thanks to the compatibility of Bluetooth Mesh with Bluetooth Low Energy, it is possible to access individual nodes, e.g. from a mobile phone. The aim of this work is to design and implement a measuring system whose elements will communicate with each other using Bluetooth Mesh wireless technology.
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Design of Flow, Temperature and Pressure Measuring System
Macíček, Ondřej ; Čížek, Martin (referee) ; Sekora, Jiří (advisor)
This master’s thesis contains complete design of the complex measuring system for temperature, pressure and flow. Objects of measuring are pressure in rabbit’s heart ventricle, flow of the saline through the heart and the temperatures of physiological solution. Work is interested in programming of microcontroller and program for LabVIEW environment, which is used to view and export relevant data related to measuring. Text also contains technical documentation of functional sample of measuring system.
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Modular Simulator of Microcontroller
Vosyka, Pavel ; Janoušek, Vladimír (referee) ; Peringer, Petr (advisor)
This thesis deals with design and implementation of new simulator with possibility of supporting multiple types of microcontrollers and has its own graphical user interface. The user interface was implemented using the QT graphical framework. Support for the ATmega328p microcontroller was added to the simulator using the simavr library. Three electrical circuits were modeled as microcontroller surroundings, these are switch, LED and RC circuit. The simulator was implemented in C++ and its functionality was verified. The result of this work is a functional simulator supporting simulation of microcontroller ATmega328p.
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Smart lock device using CAN according to the AUTOSAR
Musil, Tomáš ; Fiedler, Petr (referee) ; Arm, Jakub (advisor)
The aim of this thesis is a creation of lock based on RTOS system according AUTOSAR standard. In the first part of thesis is the acquaintance itself with the standard. After that thesis is concerned with the choice of suitable RTOS and with this linked MCU. In the next point is described the method of creation of individual parts from which is an application created. The last points of the work concern the description of the application itself, functionality and methods of testing.
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