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Dissertations / Theses on the topic 'Přenosný'

Author: Grafiati

Published: 28 June 2021

Last updated: 14 February 2022

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1

Vepřková, Hana. "Přenosný monitor EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221379.

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The first two chapters are devoted to theoretical analysis of issues relating to portable EKG monitor. This chapters are aimed to further acquaint the reader with the issue for subsequent easier of understanding on further steps in the implementation of the device which will be contain in the following chapters. The first chapter is mainly a medical nature. We describe the anatomy and functional properties of the heart. In the next chapter we are deal with detail of electrocardiograph and the conditions for its proper function. Other chapters are devoted to the actual implementation of the facility. We are dealing with the issue of build functional portable EKG monitor. This practical part begins by fourth chapter, which consists block diagram of the device and discusses the required parameters. Next most extensive chapter is devoted to a detailed breakdown of the electrical circuit, including the calculation of the individual components. The last chapter describes the implementation and outcome measurements on test persons.

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Nevřela, Tomáš. "Přenosný zdroj pro indukční ohřev." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376939.

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The aim of this work is to realize and test a prototype portable source for induction heating of small parts. The project contains a theoretical basis of resonant circuits and induction heating. The device design is based on simulation results from the FEMM program, with which a focussing coil for induction heating has been designed. The parts of the thesis are the realization of the designed device, its putting into operation and the programming of the control.

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3

Hynek, David. "Přenosný číslicově řízený stabilizovaný zdroj symetrického napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413121.

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This thesis deals with a design of a power supply for a measuring equipment for a geophysical mapping intended to do a reconstruction of an electrical impedance of a ground environment of water reservoirs. The power source is going to be used for laboratory measurements and for outdoor experiments. The thesis describes the selection of suitable components, equipment design and testing. The theoretical part explains the functions of used components and the principle of an electrical impedance tomography. The conclusion summarizes the properties of the proposed solution and evaluates the final product.

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Filip, Martin. "Zdroj nosného kmitočtu pro přenosný simulátor radiolokačních signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218615.

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This thesis deals with the analysis and solution source for carrier frequency generator for portable radar signal simulator. This simulator is tunable in the frequency range from 2 GHz to 18 GHz and as it´s frequency source generator is used YIG oscillator for its very high frequency realignment. Simulator provides output power up to 1W on the SMA connector which can be connect to internal antenna by using jumper cable. To achieve this output power will be used by semiconductor amplifier.

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Kopic, Jan. "Přenosné zařízení pro měření impedancí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442411.

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This thesis targets on design of portable device for impedance measurement. Theoretical knowledge related to the construction of a portable impedance analyzer is summarized in a separate chapter. This section also compares some commercially available impedance analyzers. In addition, this thesis contains a description of the principle of operation of the impedance analyzer, which is divided into individual function blocks and supplemented by control circuits. A large part of the work focuses on the design of the analog measurement circuit, where suitable measuring methods are also presented. The functionality of the analog blocks of the device was verified by circuit simulation in the PSpice program and by experimental tests. Selection of some components is mentioned in the relevant chapters, where the essential parameters from datasheets are listed. The output of the work deals with a designed prototype of the device, which was tested. Based on the findings some modifications of the device were proposed for practical usability. The attachment of the thesis contains final version of designed printed circuit board.

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6

Kondicz, Dávid. "Optický přenos informací - bezpečnost přenosu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220547.

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The submitted work deals with issues of optical transmissions and its security. We will become familiar with a variety of transferability of information, based on which we can assess the advantages and disadvantages of each technology as compared to optical information transmission. Based on acquired information we will try to implement interception of optical communication of cable TV provider.

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7

Vodehnal, Michal. "Vývoj tribometru pro měření adheze na reálné kolejnici." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400935.

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The submitted master’s thesis describes the development of a tribometer used to measure the adhesion of a real rail. The thesis contains an overview of the basic terms concerning wheel and rail contact. Following that, there is an overview of devicesthat are able to measure the adhesion on a real track. The author's solution includes a design of the tribometer, the proposed measurement methodology and also a description of the individual components. The result of this thesis is a functional device, verified in laboratory conditions and on a real track.

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Polák, Ladislav. "Analýza a modelování přenosu signálu ve standardech DVB-H/SH." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233589.

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Tato disertační práce se zabývá analýzou, simulací a měřením zpracování a přenosu signálů digitální televize pro příjem mobilního TV vysílání ve standardech DVB-H a DVB-SH. Tyto standardy vycházejí z předpokladu, že příjem signálu je charakterizován modely přenosových kanálů s vícecestným šířením. Tyto, tzv. únikové kanály, jsou charakterizovány hlavně zpožděním a ziskem jednotlivých cest. V závislosti na dalších parametrech (rychlost přijímače, Dopplerovské spektrum), je možné rozdělit únikové kanály do třech hlavních skupin: mobilní, přenosné a fixní. Dá se předpokládat, že v různých modelech kanálů bude přenášený signál různě ovlivněn. Proto je potřebné najít optimální parametry systémů (DVB-H/SH) pro kvalitní příjem vysílaných služeb mobilní televize, což je hlavním cílem této disertační práci. Pro tento účel byly vytvořeny dvě vhodné aplikace (jedna pro DVB-H a jedna pro DVB-SH) s GUI v prostředí MATLAB, které umožňují simulovat a analyzovat míru zkreslení signálu v případě mobilních, přenosných a fixních scénářů přenosu. Navíc, tyto aplikace obsahují i druhý samostatný simulátor pro nastavení a modifikaci parametrů jednotlivých přenosových cest. Díky tomu je možné zhodnotit vliv parametrů celého systému a kanálových modelů na dosaženou chybovost (BER a MER) a kvalitu přenosu. Ve všech přenosových scénářích (v závislosti na poměru C/N) byly získané, vyhodnocené a diskutované zkreslení signálů. Navíc, u standardu DVB-H, všechny získané výsledky ze simulací byly ověřeny měřením. Rozdíly mezi dosaženými výsledky (simulace a měření) byly rovněž podrobeny diskuzi. Tuto disertační práci je možné rozdělit do čtyř hlavních částí. První část disertační práce se zabývá rešerší současného vývoje v oblasti digitálního televizního vysílání na mobilní terminály ve standardech DVB-H/SH. Na konci této části jsou jasně popsány cíle této disertační práce. Druhá část práce je zaměřená na stručný popis blokového diagramu vysílačů v obou standardech DVB-H/SH. Dále jsou stručně popsány modely přenosových kanálů, které se používají pro modelování přenosu signálu. Stručný popis vytvořených aplikací, i s vývojovým diagramem, které jsou vhodné pro simulaci a analýzu přenosu v DVB-H/SH, jsou popsány v třetí části práce. Čtvrtá a nejdelší část této disertační práce se zabývá vyhodnocením získaných výsledků ze simulací a měření.

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9

Dadák, Jiří. "Komunikační systém pro nevidomé - přenosná část." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217274.

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Orientation in big administration buildings can be very difficult for visually impaired people. Although most of the buildings are equipped with elevators, the buttons of which are designated with Braille characters and acoustic signals, it might be very difficult for the visually impaired to actually find the particular office. Even if there were descriptions in Braille at each office door, it would prove very complicating for the visually impaired individual to localize the descriptions in the first place, especially in case of a large number of offices in the building. That may also concern other important places, such as toilets, inside a building. In this thesis, I am going to present a design proposal of a communication system which uses transceivers placed at significant points in a building and receivers placed at the end of the white cane for orientation inside a building.

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10

Veis, Samuel. "Přenosné automatizované pracoviště pro měření vzduchotechnických veličin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378713.

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This work deals with the design and realization of the workplace for the measurement of ventilation parameters of fans, electric machines and other elements. The thesis contains an extensive research part regarding the air-conditioning issues. In the work was designed a channel for measurement, electronics, sensorics, control algorithm and user application. The workplace was completed and tested.

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11

Pozdíšek, David. "Přenosné automatizované pracoviště pro měření vzduchotechnických veličin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417800.

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This diploma thesis deals with a portable working place for automated measuring of pressure characteristic dependence on ventilator air flow and dependence of pressure loss on air flow for electrical machines and other devices. The goal of this thesis is to design and create the working place with performance validation measure.

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12

Augustin, Stanislav. "Pokročilá meteostanice s přenosem obrazu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220731.

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The content of this diploma thesis is a hardware and software design of advanced weather station with image transmission. The meteostation consist of two units - outdoor and indoor unit. Outdoor unit provide processing measured values from temperature sensor, atmospheric pressure sensors, rain gauge and windmeter. It also provides processing of captured image and wireless transmission of measured values to indoor unit. Indoor unit should provide comfortable meteostation controlling and visualization of weather situation by web interface.

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13

Kalenský, Ondřej. "Design přenosného veterinárního rentgenového přístroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318804.

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This diploma thesis is focused on the design of a product family of portable veterinary x-ray generators. The thesis deals with the possibilities of using parameterization when designing products which are part of a product series. The main body of the thesis lies in the design of a parametric script which generates variations of portable veterinary x-ray generators depending on the size and position of the inner components. The outer surfaces are defined by algorithms from the input parameters. It is possible to alter the individual attributes (e.g. the progresion of curves, the dimensions of component parts and the proportions between the individual parts). The output from the parametric script is three size-variations of the product.

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14

Ptáčník, Jaroslav. "Způsoby snímání sportovních přenosů." Master's thesis, Akademie múzických umění v Praze.Filmová a televizní fakulta. Knihovna, 2013. http://www.nusl.cz/ntk/nusl-172879.

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Head cameraman - function on live broadcasting - multicamera shootig, Description of the preparation of multi-camera shooting a television sports coverage. The distribution of camera positions in the athletics grounds, football pitches and sport halls - hockey and martial arts. The layout and scanning angles of the cameras. Shooting preparations of the motor racing and winter sports. Construction of camera towers and incorporating them into the shooting scene. Comparison of the technologies used in the Czech Republic and in the world. Wireless transmission of images used for long distance - a general description of the technology. Technology equipment and OB van HDTV description. Stereoscopic shooting and preparation for broadcasting in UHDTV2.

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15

Chovaneček, Libor. "Simulace přenosu DVB-C2." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219130.

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The theme of this thesis is simulation of DVB-C2 transmission. The first part of this thesis is focused mainly on theory, where it describes differences between digital and analog television transmission. The project also explains principle of operation DVB-C and DVB-C2 systems with focus on channel coding a modulation. Application for simulation of DVB-C2 transmission, which is developed in the MATLAB environment is described in the second part. The last part of this thesis includes results of simulations of DVB-C2 transmission and their comparison with measured values of DVB-C transmission.

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Klíma, Jindřich. "Simulace přenosu DVB-S2." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219168.

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This thesis is focusing on the second satellite digital TV standard, DVB-S2. It deals with the principle of the digital TV and the first standard DVB-S. It also describes the very beginning and characteristics of the DVB-S2, new technologies in use, architecture and the individual topics are then explained more in detail. The thesis also contains the program of transmission simulation of DVB-S2 in MATLAB. In the laboratory of television technology UREL, two standards were measured and compared with the values obtained from the program. The functionality of the program and the benefits of DVB-S2 were verified afterwards.

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Motúz, Rastislav. "Měření disperzí optických přenosů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220428.

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This thesis firstly theoretically describes phenomena which appear in optical fiber transmission. The theoretical part of the thesis deals with linear and non-linear phenomena, and later on proceeds to dispersions with a more significant effect on the optical transmission quality. It puts polarization to the centre of the phenomenon called Polarization mode dispersion (PMD), which is the main object of our interest. It leads to a deep PMD description from the point of view of polarization states, limit values, compensation methods, and methods of measurement. The practical part of this thesis deals with a draft of PMD measurement via Fixed Analyzer method. For the purposes of this measurement, we used the optical spectral analyzer MS9740A. In order to compare measured values, the proposed idea then proceeds to the reference measurement by using a modular platform EXFO FTB--200 in combination with CD/PMD module EXFO FTB-5700. Results of measurements have been evaluated for the limit values defined by the standard. In the last chapter of this thesis, the reference measurements are compared to the Fixed Analyzer method. All the advantages and disadvantages of individual measurement methods are identified at the end of this chapter too.

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Němec, Filip. "Optický bezkabelový přenos." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218331.

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This diploma thesis first handles the general issues concerning free space optics in the~atmosphere. The aim is to design and implementation of optical wireless equipment, which would serve in the laboratories of optical networks. Ronja was used as the basis for a~wireless link, which is already widespread in the world. Students will work with the device, which they may come into contact in the future. It consists several separate modules: transmitter, receiver and inteface. Each module have a separate chapter describing the~functional blocks and circuit realization. Ronja was adjusted for the needs of~laboratory tasks, where additional voltmeters measures received signal strength (RSSI) at~both ends of the link. Measuring device provides adjustment of power the transmitting LED via~computer, measures and sends RSSI values to a PC via~USB or RS232, turn off Ronja with computer. For targeting the pipes of Ronja was developed the mechanical design. In the last part of thesis the device was undergone a series of tests.

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Varga, David. "Bezdrátový přenos výkonu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218912.

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ork tie together on first project, in which the was designed apparatus for tests wireless transmission energy. Antenna was synthesized and theoretically optimized for experimental operation, in which the will performed series measuring. In first part is practical description of realization proposal. It consists of circuital solution, proposal measuring workplace and mechanical construction with illustration photographs of arrangement. Second part includes results of performed measuring. These measuring will divided by three basic groups: in first group will by testing feature one’s antennae, in second group will series transmission measuring power gain, and in third group will photographed shape of field, and comparison with simple simulation finite difference method. Third part summarises results from measuring, and prepares consecutive balancing visualisation project, which is of thematic bent on chosen aspects theoretical hypothesis and effected experiments.

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Němec, David. "Bezkabelový optický přenos." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219495.

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This diploma thesis first handles the general issues concerning free space optics in the atmosphere, which will then discuss the components and adjustments modification RONJA in laboratory. The aim is to simplify the control of laboratory FSO with programming compensation for HyperTerminal and provide external simulation influences on the FSO measurements in non-standard situations such as fog. It was created RONJA terminal with just cursor control to communicate with the serial port, ping, and FTP protocol. In the last part of this work were measured by an abnormal situation on the optical link RONJA.

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Kočík, Karol. "Modul osciloskopu s bezdrátovým přenosem dat." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221279.

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The aim of the thesis is the design and realization of the oscilloscope module with wireless data transfer. One part of the thesis is a short overview of the different types of AD converters. The main part is focused on the hardware configuration that allows modification of the wireless module of the oscilloscope, and the possibility of using in the industrial zone. The design takes into account reducing of consumption and EMC compatibility.

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Partsch, Patrik. "Bezdrátový zvonek s digitálním přenosem hlasu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217694.

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The master´s thesis deals with a design and layout of wireless doorbell with digital voice transmission. It also includes the nRF9E5 circuit analysis. In the beginning of the document there is characterization of the problem in general. Next part describes a layout example for the application schematic, a layout of printed circuit board and a layout of software. nRF9E5 is a true single chip system with fully integrated RF transceiver, 8051 compatible microcontroller and a four input 10 bit AD converter. Despite of all studies of available literature I have found only very little particular information related to this matter. In general, the main aim of this work is to make the wireless doorbell with digital voice transmission. Further, ilustrated schematics are enclosed as a attachement of this thesis.

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Papež, Josef. "Bezdrátový zvonek s digitálním přenosem hlasu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217243.

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This diploma thesis deals with wireless doorbell realisation. The doorbell is battery-powered and supports half duplex voice transferring. The general aim is to design system circuitry, PCB and to create microcontroller firmware.

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Rokos, Lukáš. "Vysokofrekvenční jednotka pro přenosnou monitorovací stanici." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-399508.

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The thesis describes methods for spectrum monitoring, which are used by the Czech telecommunication office. The thesis describes a design of an RF unit for a portable monitoring station and its potential use. The RF unit consists of several devices, which are connected. Devices like an antenna, a rotator, a rotator control unit, coaxial switches, an amplifier and attenuator were chosen as commercially available devices. It is also described, why were these devices chosen. Other devices such as filters, a control unit for the RF unit and a power supply were designed. The RF unit is controlled by a computer. A software for spectrum monitoring contains a graphical user interface for the RF unit control.

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Hrobařová, Zuzana. "Analýza bezdrátových přenosů v PZTS." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-257092.

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This dissertation deals with Intrusion and Hold-up Alarm System wireless communication (I&HAS). The main objective is to determine security risks of wireless communication between detectors and PBX, eventually to recommend how to avoid these risks. The research was conducted on different detector types. The first theoretical part of dissertation describes variety detector types, wireless communication types and theoretical security risks of these communications. The practical part of dissertation describes the above mentioned security risks investigated in practice as well as the measurement of communication between detectors and PBX. The recommendations how to avoid these risk are placed at the end of dissertation.

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Kašpar, Jaroslav. "Zabezpečení přenosu dat BCH kódy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217733.

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The thesis Data transmission error-protection with BCH codes deals with a large class of random-error correcting cyclic codes which are able to protect binary data and can be used for example in data storages, high speed modems. Bose, Chaudhuri and Hocquenghem (BCH) codes operate over algebraic structures called Galois fields. The BCH encoding is the same as cyclic encoding and can be done with linear feedback shift register but decoding is more complex and can be done with different algorithms - in this thesis there are two algorithms for decoding Peterson and Berlekam-Massey mentioned. The aim of this thesis is to find BCH code which is able to correct t = 6 independent errors in up to data sequence n = 150 bits, then peruse possible realizations of the codecs and set criteria for the best realization, then design and test this realization. This thesis is split into three main parts. In the first part there are encoding and decoding methods of the BCH code generally described. The second part deals with selecting of the right code and realization. There was chosen BCH (63,30) code and realization with FPGA chip. In the last part is described design of BCH encoder and decoder and compilation in the Altera design software.

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Šádek, Michal. "Datové přenosy po silových vedeních." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218154.

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This master's thesis describes a principle of the systems for data communication over powerline. The frequency we can divide to narrowband and broadband. Various modulatory techniques with their usage and access method technology according to norms are mentioned. Engineering constraints as are frequency subband and sources disturbance are mentioned. A conception laboratory net is designed, where are effected trial measurement in data communications for systems ModemTec, Homeplug AV a DS2. This demonstration of communication contains display communications spectrum of choice systems and their matching. To comparison is used synthetic created nets LISN (Line Impedance Stabilizing Network) in narrowband transmissions. Long - term metering of systems ModemTec is is effected in laboratory net VUT and in the working condition in Swiss extension companies Daetwyler Rubber where are produced robust rubbery production. System DS2 is measured in home network, where are supposes low disturbance and in industrial environment company Daetwyler Rubber. On the basis report information of phase quality recorder a powerline and measured rate of communication, it is evaluate an influence disturbance on a data transmission and response time. At the close are mentioned principles of usage this communication.

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Chaloupka, Tomáš. "Simulace vysokorychlostních optických datových přenosů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403768.

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The aim of this master thesis is comparation of simulation tools OptSim™ and PHO- TOSS which are used to create simulations of data traffi cs in access and metropolitan networks. The outcome of this thesis is three laboratory exercises and their theoretical bases which should explain the way of working in diff erent simulation environments to students.

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Koranda, Karel. "Akcelerace šifrování přenosu síťových dat." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236192.

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This thesis deals with the design of hardware unit used for acceleration of the process of securing network traffic within Lawful Interception System developed as a part of Sec6Net project. First aim of the thesis is the analysis of available security mechanisms commonly used for securing network traffic. Based on this analysis, SSH protocol is chosen as the most suitable mechanism for the target system. Next, the thesis aims at introduction of possible variations of acceleration unit for SSH protocol. In addition, the thesis presents a detailed design description and implementation of the unit variation based on AES-GCM algorithm, which provides confidentiality, integrity and authentication of transmitted data. The implemented acceleration unit reaches maximum throughput of 2,4 Gbps.

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Musil, Martin. "Přenosy rastrových dat v FPGA." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236507.

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This work deals with the design and implementation of high-speed communication interfaces into FPGA chip and their utilizing for image transmission and processing. In the implementation part has been created PCI Express endpoint device, which provides data transfers between the FPGA chip and computer RAM memory. As a source of image data for further processing was connected the Unicam M621 camera throught the Ethernet interface to FPGA chip. The project was implemented on the Xilinx SP605 development board. Using both of the the interfaces were demonstrated on the application of edge detection using Sobel operator. The PCI Express endpoint device driver for the Linux operating system and a simple application interface in C language was also created within this project.

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Svobodník, Petr. "Zpracování signálu SDR pro přenosnou monitorovací stanici." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377057.

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Goal of this thesis is to develop portable monitoring station for radio spectrum monitoring and its controlling application for use by Czech Telecommunication Office. The station is based on Software Defined Radio (SDR) and capable of monitoring in the range of 1 MHz - 6 GHz. Developed application controls not only the SDR but also the external RF unit (including choice of receiving antenna, filter, optional amplification/attenuation and azimuth of antenna rotator). Measurement processed by computer and displayed graphically in form of spectrum diagram and waterfall diagram. Furthermore, the application will perform spectral measurement in compliance with requirements of International Telecommunication Union. The application is also capable of recording into the file and of analyzing historical data from the previous measurement.

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Novák, David. "Optimalizace přenosu hlasu v komunikačních sítích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218340.

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This master’s thesis deals abou the transmission of voice in communications networks. The theoretical part describes criteria for optimizing voice, such as quality of service, type of service, level of service, service type, and mean opinion score. Next I describe the Internet Protocol, comparing IPv4 and IPv6, VoIP, including security, protocols and parameters necessary for transmission. Other part is about neural networks. There are basically described the neural network, Hopfield neural network and Kohenen neural network. The research is based on a comparison of the network without ensuring the quality of service and with ensuring quality of service. Then, there are compared two types of switches. Classical switch-controlled sequentially, and switch controlled by neural networks. The overall simulation program is implemented in Opnet Modeler. The conclusion deals with the creation of laboratory tasks in this program to compare the different systems of ensuring quality of service.

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Menšík, David. "Analýza přenosu dat v konvergované síti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218839.

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This thesis deals with data transmission applications in the converged network, focusing on the WiFi network IEEE 802.11. The theoretical part describes the cause and nature of converged networks. One chapter is devoted to a description of IEEE 802.11, which is next to different standards and options described architecture, coordination and access network QoS solution to that standard. The research is based on custom design converged networks, and WiFi elements in the environment of graphic simulation software OPNET Modeler. In the proposed network was also simulated the operation of services such as voice, video conferencing, FTP and HTTP streaming. Results of simulation data traffic in the network are then analyzed. At the Conclusion of the thesis, is in OPNET Modeller program created the role of laboratory. The essence here is the comparison of operating a converged network, with and without quality support services.

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Vojkůvková, Petra. "Vybrané jevy při přenosu tepla vzduchotechnikou." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226850.

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Numerical simulation is a scientific method used to describe characteristics of examined system by means of experiments on its mathematical model. This thesis uses this method to elucidate the processes taking place in two different systems. Firstly it deals with the design of air conditioning systems for buildings, focusing on the mixing chambers. It focuses on the formation of condensation of water vapor in mixing chambers under conditions where the final temperature of the mixture does not drop below the saturation curve. Second prepared topic falls within the field of thermodynamics applied in food production. In order to assess the sufficiency of air-cooling method examines the thermal field in the product and evaluates the application of air-cooling assembly line in practice.

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Kresta, Daniel. "Analýza přenosu mobilního digitálního rozhlasového vysílání." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241058.

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This thesis deals with an analysis of a system called Digital Audio Broadcast and describes its mathematical model created in MATLAB program. In the first part basic blocks of a transmitter and a receiver are analyzed along with their principles. Then different types of transmission channels for static, portable and mobile receivers are described. The second part contains description of the DAB mathematical model itself. Individual blocks are described in the order of the DAB signal path, from the transmitter through the transmission channel to the receiver side. In this part the graphical user interface is also described. In the final part the results of experimental measurements and simulations are presented.

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Bartušek, Petr. "Matematické metody zabezpečení přenosu digitálních dat." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231693.

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This master’s thesis deals with an analysis of digital security with CRC. In the thesis there is described a principle of coding theory, especially then digital security with CRC, for which there is explained a mathematical principle of their encoding and decoding, software implementation and a description of frequently used generator polynomials. The main aim of the thesis is a testing of undetected errors and a finding of number of these errors. After that it is used for the computation of probability with which undetected errors can occur. The thesis is supplemented with several programs which are programmed in the software Matlab.

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Kubálek, Jan. "Vysokorychlostní paketové DMA přenosy do FPGA." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2020. http://www.nusl.cz/ntk/nusl-417262.

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This thesis deals on the design, implementation, testing and measuring of a firmware module for FPGA chips, which enables DMA transfers of network data from computer RAM to the FPGA chip placed on a network interface card. These transfers are carried out using a PCIe bus on the speed of up to 100 Gbps with the possible support of speeds 200 Gbps and 400 Gbps. The goal of this technology is to allow network data processing for the purpose of maintenance of backbone network nodes and data centers. The module is designed so it can be used on different types of FPGA chips, mainly those produced by companies Xilinx and Intel.

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Páter, David. "PLC ? datové přenosy v elektrorozvodné síti." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-2070.

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Cílem této diplomové práce je seznámit čtenáře s konceptem datových přenosů v elektrorozvodné síti ? PLC (Powerline Communication), provést analýzu současného stavu v PLC oblasti ve světě a v České republice, vyzkoušet možnosti PLC v praxi, identifikovat přednosti a omezení PLC a srovnat PLC s konkurenčními komunikačními technologiemi v České republice. Za účelem dosažení stanovených cílů je diplomová práce členěna na dvě hlavní části ? teoretickou a praktickou. Teoretická část je založena především na analýze dostupných zahraničních a českých informačních zdrojů, týkajících se oblasti PLC, a na následném zpracování takto získaných poznatků. Praktická část diplomové práce pak spočívá v řešení případové studie z českého podnikatelského prostředí.

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Láznička, Tomáš. "Návrh přenosné vakuové komory pro zakládání vzorků do vysokofrekvenčního paramagnetického rezonančního spektrometru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417153.

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Aby bylo možné charakterizovat atmosfericky citlivé vzorky ve vysokofrekvenčním elektronovém paramagnetickém rezonančním spektrometru (z angl. high-frequency electron paramagnetic resonance spectrometer, HF-EPR), je potřebné mít vakuový transportní systém. Cílem této práce je navrhnout a vyvinout tento vakuový přepravní systém, který umožní tuto přepravu. Vakuový systém, který se skládá z mobilního vakuového kufru, držáku palety a přechodové komory, byly navrženy, sestaveny a testovány. Bylo dosaženo tlaku 4,3 10^{-10}mbar, což zajistí inertní podmínky pro transport vzorků. Byl proveden transport vzorku ze systému ultravysokého vakua (UHV) do HF-EPR spektrometru. Kontaminace testovacích vzorků byla charakterizována pomocí rentgenové fotoelektronové spektroskopie. Bylo zjištěno, že nedochází téměř k žádné detekovatelné kontaminaci, pokud je vzorek přepravován pomocí vakuovém systému méně než 16 hodin. Bylo navrženo rozšíření pro přepravu vzorků z rukavicového boxu a paletky pro grafen, ale jejich výroba dosud nebyla provedena. Vyvinutý vakuový systém je plně funkční a poskytuje alternativu ke komerčně dostupným produktům, a proto bude dále používán při zkoumání vzorků citlivých na atmosféru v laboratořích CEITEC Nano.

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Mazálek, Tomáš. "Motokolo se spalovacím motorem a elektrickým přenosem výkonu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318098.

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The objective of this semester thesis is design of the control algorithm, needed control and power circuits and PCB design for the unfinished bicycle concept with a combustion engine and electric power transmission. The control algorithm had to be designed to make efficient use of the combustion engine performance and to minimalize the fuel consumption and noise level of the device. All circuits are fully implemented by analog components for which were designed printed circuit boards using program Eagle and this boards were revived and debugged.

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Štarhová, Marie. "Posouzení metody využívající přenosnou měřicí sestavu s průtokoměrem." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372080.

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This diploma thesis deals with the assessment of flow measurement method using portable measuring set with the flowmeter used in the field of official measurement in the free surface profiles. This method is a controlled simulation of the required flow through a portable measurement set. This approach is innovative in relation to other methods of official measurement in which direct flow measurement is carried out. The thesis is based on extensive literary research related to elementary element of this assembly – flowmeter. On the basis of individual characteristics, the technical and metrological requirements for both the flowmeter and the other elements of the measuring set are processed. In the context of these findings and the requirements of the official measurement, input sources of measurement uncertainties are further defined and subsequently calculated by this assembly. The findings from this thesis are fully applicable to the practice of institution authorized for the official measurement of the subject method.

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42

Müller, David. "Měření teploty s přenosem dat přes sít WLAN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220663.

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This diploma thesis deals with the design of temperature sensor and display units, which communicate via a WLAN network. The theoretical part provides an overview of various methods of temperature measurement including several specific types of temperature sensors, and also introduces the WLAN standard as well as TCP and UDP protocols. The design solution is focuses first on the system architecture and design of the communication protocol, followed by the implementation of both types of equipment, starting with selection of components, through design diagrams and printed circuit board patterns, up to production and commissioning. The following parts of this thesis deal with the design of programs for the controlling microcontroller units of both units and the configuration application for PC.

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Barč, Andrej. "Přenos radiofrekvenčního signálu optickým vláknem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442409.

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This work deals with the transmission of optical radiation modulated by a radio frequency signal through an optical fiber. Furthermore, it describes the principles of communication and area coverage. It points out the practical use of components located in the communication chain of this system. Explains the functionality of the properties and the division of individual components. It introduces the benefits and limitations of this system. It further describes the creation of a topology suitable for laboratory measurement of RoF technology. Provides experimental measurement of C-band parameters. Indicates the possible use of RoF technology using a wireless optical link. A part of the work is also a sample laboratory protocol.

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Pavliš, Jaroslav. "Přenos pacientských informací pomoci GSM." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217737.

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This diploma thesis is concerned with possibilities of patient data transfer from a pacemaker or implantable cardioverter-defibrillator to physician over GSM. Theoretical part describes options of data transfer in GSM networks, data appropriate for sending and a structure of message is proposed. A device, that is able to send medical data in a form of SMS messages is designed and constructed. The device uses a Freescale MC68HC908GP32 microcontroller, character display with a Hitachi HD44780 controller and a cell phone Sony CMD-J70. The program for microcontroller is written in assembler for HC08. For tabular view of received messages, an application software for PC was created.

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Kutílek, Miloš. "Přenos informací po síti Ethernet." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220066.

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This thesis deals with the transmission of information over the Ethernet network. In this work a suitable microcontroller and a communication module were selected. The Module provides data transfer from Ethernet to SPI bus. Furthermore an optimal digital temperature sensor DS1820 was chosen. Theoretically it describes the model TCP / IP and the Ethernet type network . In this thesis a block circuit diagram is created, further an electrical wiring diagram and a printed circuit board were constructed. In the programming environment BascomAVR a program is compiled, which is used to transfer information from the microcontroller via Ethernet to a website.

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Cupal, Miroslav. "Bezdrátový přenos energie uvnitř automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221219.

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The thesis is focused on the design of antennas for wireless power transfer inside a car near the frequency of 8 GHz. In the last century, a number of scientists dealt with wireless transmission of energy with high power and long distances. Currently, attention is given to methods capable of transmitting energy with good effectively over a distance of meters for charging mobile devices, wireless sensors and other devices with low power consumption.

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Juráň, Jeroným. "Digitální bezdrátový přenos zvukového signálu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316441.

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This document describes the design of evaluation boards for wireless transmission of audio signal. The boards use WiSA compliant modules. It describes schematics of transmitter board, receiver board and boards of both AD and DA converter. Secondly the document describes the designed PCBs and demonstrates the results by photodocumentation. It also includes description of C library for using FLASH memory to store data and the C driver for FT800 chip and the typical application using this chip including touch

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Kičina, Andrej. "Bezdrátový přenos dat ze senzorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217471.

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Thesys is focused on wireless transfer of the sensor data. It describes different wireless standards for potential use and realization of interface between sensor's data and their transfer. Crux of the matter is in detailed description of whole system with created utility programs. In the end it is summarized acquiered features of the realization.

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Burget, Radim. "Přenos signalizace pro internetovou televizi." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-233512.

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A signalization in an Internet protocol environment is commonly used for monitoring quality of service and other parameters of a network. This thesis is involved in transmission of signalization through internet protocol networks and proposes scalable solution for small and even for large-scale internet television broadcasting. The main contribution of this thesis lies in design and validation of optimal hierarchical tree on the basis of resources assigned. This is done in respect to geographical distance, network distance of each particular member of the hierarchical structure. For the design of algorithms simulations and global experimental network were used.

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Polóni, Pavol. "Bezdrátový přenos signálu rozhraní DMX512." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236700.

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Master's thesis deals with design and implementation of a system for wireless transmission of DMX signal 512, which is primarily designed for the management of lighting effects. Its electrical specification is based on the EIA485 standard. Text of the work describes the design stage. First is the issue of implied actual protocol DMX 512 or EIA485. Next sign on selecting a suitable architecture for wireless transmission, management and compilation of the block diagrams. Describes the operation of the component selection and circuit implementation of the scheme, which is using the DPS Eagle compiled. In conclusion, this work is to evaluate the results of the proposed system and showing the way to its further development so that it can be realistically implemented in practice.

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