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Experimental measurements and simulations of low-power communication network BUT with long-range
Štrajt, Martin ; Pokorný, Jiří (referee) ; Fujdiak, Radek (advisor)
This work deals with the description, simulation and measurement of coverage of a long-range low-power communications network using LoRaWAN technology. Here is the definition and integration of modern Low Power WAN networks, a brief description of specific technologies and an example of their real use. The theoretical part explains in detail the used modulation, frequency and associated constraints. The practical part contains four simulations of city coverage and simulation of building coverage with description of simulation methods. The last chapter of the measurement describes the description of the measurement methodology, the measuring device, and the graphically presented results of the measurements with their verbal evaluation.
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Development of an IoT device for NB-IoT technology
Ježek, Jiří ; Štůsek, Martin (referee) ; Pokorný, Jiří (advisor)
The bachelor thesis deals with the design of the IoT sensor communicating with the modern technologies NB-IoT. In the theoretical part of the bachelor thesis are described properties of selected LPWAN networks for communication between long distance devices. Wireless networks are compared and evaluated based on bandwidth, power and sensitivity, transmission rates, types of modulation, and pricing. It is followed by Market Research with IoT devices communicating over LPWAN networks. The practical part deals with the design of equipment for the measurement of selected parameters of water and air quality communicating through NB-IoT wireless technology, software solution of the device and testing communication between the device and the server. The output of the practical part is the proposed circuit diagram, printed circuit board and C ++ written solution using the on-line development environment Mbed.
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Development of an Amazon Alexa Skill for Amazon Echo
Dobrík, Andrej ; Zeman, Kryštof (referee) ; Pokorný, Jiří (advisor)
V posledných rokoch nastala významná zmena v spôsobe interakcie medzi používateľmi a inteligentnými zariadeniami. Pre ludí je najpraktickejší spôsob interakcie s týmito zariadeniami hlasová interakcia. Veľa firiem si túto zmenu v interakcií uvedomilo a začalo vytvárať software a príslušný hardware pre tento spôsob interakcie. Táto bakalárska práca sa bude venovať týmto produktom, konkrétne produktom Amazon Echo, ich schopnostiam a požiadavkam. Nasledujúc vysvetlením komunikácie Echa. Priblížením Amazon Alexa Skills Kit a vytvorením a implementáciou nového vlastného Amazon Alexa Skillu pre Amazon Echo.
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Design of smart sensor equipped with LoRa technology
Šigut, Štěpán ; Pokorný, Jiří (referee) ; Štůsek, Martin (advisor)
Over the past years few trends have become as profound in the technology industry as yearly increases in battery capacity, transistor density and price drops for computing power. These trends follow a steep curve and drive what has become known as IoT or Internet of Things. Ever increasing number of devices connected to the internet are putting high demands on wireless network technologies. During the last decade several new wireless technologies have emerged and are competing to become the next go-to technologies for applications such as smart cities, smart cars and smart factories. LoRaWAN is one relatively new competitor to the market and is the central topic of this thesis.
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Wireless Sensory Network Using LoRa Technology
Mikulášek, Michal ; Pokorný, Jiří (referee) ; Škorpil, Vladislav (advisor)
The bachelor thesis focuses in the first half on the Internet of Things and the available wireless technologies for the Internet of Things. Each technology is characterized by its features, pros and cons, as well as the possibilities of using it in the Internet of Things. In the second half of the thesis, a practical design and construction of a LoRa network, consisting of a sensory and a central unit, is carried out. The parts of the solution are designed wiring schemes, printed circuit boards and detailed photo documentation. Additionaly the software solutions for both types of units are described, with detailed descriptions of the proposed features. The maximum possible range is tested and documented for the entire solution. Subsequently, a detailed measurement of the power consumption of the sensor unit is carried out and an extensive estimation of its battery life for a selected battery.
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Implementation of HDLC protocol in network simulators
Polášek, Jaromír ; Mašek, Pavel (referee) ; Pokorný, Jiří (advisor)
This diploma thesis deals with the possibility of using HDLC (High-Level Data Link Control) protocol for communication and addressing of smart metering devices with a data concentrator. The HDLC protocol is used in two DLMS/COSEM (Device Language Message Specification/Companion Specification for Energy Metering) communication profiles. To simulate these communication profiles, the most appropriate simulation program is selected. Using this simulator, the first communication profile is implemented and the second one is designed. Communication profile based on TCP/IP (Transmission Control Protocol/Internet Protocol) has been fully implemented. To implement the three-layer HDLC communication profile, all options have been thoroughly explored. Using these findings, a process was designed to guide the full implementation. For the first communication profile the qualitative parameters are measured, which are then plotted and evaluated.
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Security alarm with IoT features
Kubů, Jiří ; Pokorný, Jiří (referee) ; Krajsa, Ondřej (advisor)
The diploma thesis deals with the implementation of own design of an electronic security system with the possibility of extension with the elements of home automation. The control panel is built using the Raspberry Pi3 B+ with a touch screen that communicates with the sensors using Bluetooth Low Energy technology.
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Implementation of an IoT device for Smart Home
Popela, Vojtěch ; Krejčí, Jan (referee) ; Pokorný, Jiří (advisor)
The aim of this thesis is to acquainted with the concepts of Internet things, a smart home, and then design and implement smart home appliance – a kettle. The theoretical part of this thesis deals with the description of The Internet of Things, Smart Home, market research of Kettles, protocols used in the Internet of Things and analysis of functions to implement. In the first part of the solution a program for a control unitbuilt on the development board ESP8266 is created and the local control is put into operation. In the second part a web application is designed and put into operation. The third part of the solution contains photo documentation and project description. The fourth part analyzes power consumption and also includes a proposal for saving energy. The last part includes the design of printed circuit boards.
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School life in the years 1918 - 1945 in Subcarpathia
Bezdíčková, Kateřina ; Hnilica, Jiří (advisor) ; Pokorný, Jiří (referee)
The theme of this diploma thesis is school life in Subcarpathian Ruthenia between 1918-1945. The thesis tries to provide an overview of the development of education from the times of Austro-Hungarian Monarchy to Soviet Ukraine with a focus on the period of Czechoslovak government. In addition to the chapters on teachers, the language of instruction, teaching methodology, textbooks and teaching aids, there is also a chapter dedicated to the unique somatological research of school children. The work is based on archival materials supplemented by personal stories of witnesses. Its goal is to describe the normal school life in Subcarpathian Ruthenia, especially during the First Republic, from the point of view of pupils, students and teachers. Keywords: education, Subcarpathian Ruthenia, everyday life, Rusyns, memories, somatological research, teachers, Czechoslovak republic
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Energy and Environment in the View of Law
Pokorný, Jiří
Mankind has come to the point where it is fully dependent on energy. Primarily, this means the universally convertable electricity and also the thermal energy. The most widespread technologies for production of the above energies are unfortunately based on fossil fuels which, when combusted, produce greenhouse gases. Even though this is not the sole source of these substances, it belongs among the largest ones. The heightened concentration of greenhouse gases in Earth's atmosphere causes climate change which endangers the environment of the whole planet. To make this process stop or at least slow down, it is imperative to implement a wide range of measures to limit the greenhous gases production. Even though such measures will need to be carried out technically, their basis lies in law. The dissertation thesis "Energy and Environment from the Viewpoint of Law" deals with relationships between energy and environment (mostly energetics) and tools of law which can be releavant in this field. They can be found across different levels from international through European to national - Czech - level. From the perspective of applied tools, they incorporate conceptual, administrative and economical approaches. The roles of the respective means is such that the conceptual determine future progress,...
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