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Native Application for Visualization and Management of IoT Devices
Snášelová, Iveta ; Hynek, Jiří (referee) ; John, Petr (advisor)
Tato práce je zaměřena na vývoj mobilní nativní aplikace pro zlepšení využití IoT technologie v chytrém životním prostředí se zaměřením na správu skleníků. Aplikace adresuje obvyklé problémy při práci s IoT zařízeními, jako komplexní interpretace dat a vzdálenou správu zařízení. Toto je řešeno pomocí přívětivého UI pro zpracování a zobrazení monitorovaných dat v reálném čase a efektivní práci s ovládanými zařízení. Mezi klíčové funkce patří zjednodušené zobrazení současných a historických dat pomocí grafů a systém pro nastavení automatizace ovládání zařízení. Práce se zaměřuje na design a vývoj a znázorňuje, jak podstatnou roli hraje intuitivní UI ve správě IoT zařízení. Tato aplikace může sloužit jako základ pro zjednodušení zobrazení a zpracovaní dat IoT technologie v rámci domacího a zemědělského prostředí.
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Photovoltaic laptop charger with wireless connectivity
Komár, Josef ; Kratochvíl, Tomáš (referee) ; Kufa, Jan (advisor)
This thesis deals with the design and construction of a photovoltaic charger designed primarily for a laptop. The solar charge controller works using the MPPT (Maximum Power Point Tracking) principle and is controlled by a ESP32 microcontroller. The control algorithm constantly searches for the maximum power point, thus achieving the maximum possible power and efficiency of the PV panel. The produced energy is then stored in the battery system, which has a BMS including protections and cell balancers. The charger includes an adjustable 18 – 22 V output for powering a laptop computer and 5 V output for powering devices via USB. All important parameters (voltages, currents and powers) are sent wirelessly by the charger via Wi-Fi interface.
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Economic effectiveness of systems wiring
Jorda, Martin ; Bátora, Branislav (referee) ; Macháček, Jan (advisor)
This master’s thesis tries to show the differences between usual obsolete indoor wiring and clas-sic indoor wiring used these days and also between this „classic“ indoor wiring and „intelligent wiring“. There is insisted on selection and optimalization of the adequate system for a concrete building and there is made a question of specifications of the user or the customer, his preferen-ces (financial, space, family etc.), disadvantages and advantages of the current system. Whereas it’s impossible to satisfy all the users in these problems by reason of diversity of the buildings (it can be a lot of variants of family houses or small apartments), the systems in this thesis are ap-plied only on the most frequent types of houses. Quite lot of firms deal in this country with indo-or wiring, the most known are ABB, ELKO EP and Moeller. Each of these firms offers different alternatives of systems. From the simplest, basic alternative, to most sophisticated „intelligent“ systems, which can care about almost everything, what is common with electrical energy. These different systems, their review, advantages and disadvantages are also presented in this work. Preliminary there is analysed the whole issue from the historical view and there is briefly explai-ned, what the system wiring is. In the next chapter there is a complex description of the actual state of known firms and systems on the present-day market in our country and in the world. The-re is also summarised the basic structure and the overall comparison of the most frequently used bus systems. In the next two chapters there are presented the main objectives of this work and the methods and procedures, how to achieve these objectives. The central part of this work is the next to last chapter, in which there are presented the different model variants of the project, applied to the real residential building - middle-sized family house. That is realized on the basis of the spe-cified requirements on the designed system. Before that there was performed the complex design of the situation scheme of all usual electrical appliances and lighting system in the house. In the end the whole work is in summary analysed, mainly in term of costs of each variant of the pro-ject. By virtue of this can the reader make a better view about the whole financial problem of the system wiring, that means, how much he has to invest in his concrete wiring. In the end of the work there is attached the detailed documentation to all alternatives of the project, such as dra-wings (complex horizontal plans) and costs budget of all used items and the wiring material.
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Design of a 22 kV network in the Lipno area after the integration of the new 110/22 kV transformer station
Žižlavský, Jakub ; Koudelka, Jan (referee) ; Ptáček, Michal (advisor)
This diploma thesis deals with the design of a new 110/22 kV substation in Horní Planá. The substation design addresses, for example, the issue of reducing the load of surrounding power lines from 110/22 kV substations, reducing the size of short-circuit ratios in the surrounding system, reliability and continuity of supply, etc. Furthermore, loads of individual outgoing feeders from the surrounding substations are analyzed, in case they will be connected to a new substation. Following this, the work also addresses the related new decay points of the lines, which are determined by calculation and simulation in the Grizzly program. The simulation results could be used to compare the current load status of individual lines and contribute to the assessment of the possible benefits of both the new substation and the implementation of other modern technologies for faster and more efficient measurement and handling during operating and fault conditions.
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Development Strategy of Small Company
Motyčka, Jan ; Štěrba, Martin (referee) ; Obhlídalová, Andrea (advisor)
The topic of my bachelor thesis is strategy of progress of small enterprise and my task will be proposing effective and useful plan of development. I gained information and data from owner of a firm, Jan Janků. Theoretical points as correct way of thinking of strategy, visions and productivity will be described in the beginning. Next part of my thesis concern about analyzing methods used to find out weaknesses and problematic aspects of a firm. In the conclusion is summary of measured data and suitable advice for strategic progress of a firm.
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Server Monitoring
Straka, Ivan ; Čejka, Rudolf (referee) ; Dytrych, Jaroslav (advisor)
The thesis deals with server monitoring, focusing on the server logs and storage devices in the form of modules into the KNOTIS information system. An administrator is warned of unusual activities or possible disk failures that may lead to data loss. It describes automatic data collection, data processing and user interface that is developed in the web environment and allows you to set different server monitoring parameters. SMART technology has been used to obtain the status of disk units. The thesis works with the use of disk arrays and LVM technology. It monitors also the most important server logs, such as auth.log, syslog, kern.log and apache's log files.
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The Suggestion of the Strategy for a New ABB Products Launching
Brož, Přemysl ; Jörka, David (referee) ; Luňáček, Jiří (advisor)
his work „Proposal of strategy of penetration new products of ABB on the Czech market“ considers with appropriate strategy of penetration and sales terminal blocks on the Czech market with goal to achieve 10 % market share in the short time period, the order of several years. The analytical part of work contains an analysis of current status company, market and competition. On the basis of this analysis and theoretical groundwork, recommends appropriate strategy and precautions to improve competitiveness and obtain new customers. The work also includes income trading for the year 2009 and part of 2010.
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Analysis of the Selected Firm
Válek, Petr ; Mátl, Roman (referee) ; Hanušová, Helena (advisor)
The diploma thesis aims at analyzing Miss Claire Ltd., a distributor of perfumes and cosmetic goods. The situation of external and internal environment is described based on Porter Value Chain, indicators of financial analysis, PESTE and SWOT matrix. GE model and BCG matrix serve as complementary tools. All suggested strategies fulfill SMART criteria as well as strategic goal of Miss Claire Ltd, which is achievement of profitability and stabilization of market position.
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Widgets for a Mobile Application of Intelligent Home Control
Mlynarič, Tomáš ; Korček, Pavol (referee) ; Žádník, Martin (advisor)
This thesis deals with development of widgets designed for intelligent home control in the environment of Android operation system. The intelligent home control is a framework developed at FIT BUT. The thesis introduces the framework and explains principals of developing widgets. The practical part discusses design and implementation of the specific widgets. The implementation is evaluated and the results are discussed. The concluding section provides summary and suggests future improvements.
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