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EMC antenna
Tenora, Jan ; Pokorný, Michal (referee) ; Láčík, Jaroslav (advisor)
The goal of this master’s thesis was to design antenna working in frequency range from 30 MHz to 1 GHz. Designed biconical antenna requires balanced feed to work properly, therefore designing the balancing unit based on discrete components was necessary. Designed antenna was also constructed and its return loss, gain and radiation patterns were verified by measurement. This master’s thesis also introduces readers into principles of antenna measurements of disturbing signals in the area of EMC and compares different types of antennas for bands of meter and decimeter waves.
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Design of EMC optical converter
Štěpánek, Adam ; Hruboš, Zdeněk (referee) ; Krutílek, David (advisor)
Master's thesis is focused on designing optical converter for EMC measurement transfering signal through noisy enviroment. First part contains analysis of electromagnetic interference and its coupling and measurement, especially types of probes for interference maesurement. Next part passing through designing of optoelectric and electrooptic converter with digital intensity modulation. Last part is about realization of optical converter.
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The Design of Enlargement of Sensor and Control Module of Mobile Robots Named Brontes
Husar, Jan ; Kopečný, Lukáš (referee) ; Florián, Tomáš (advisor)
This bachelor's thesis deals with the proposal of the sensory module and the control of mobile robots named Brontes enlargement. For this purpose a printed circuit board named MX05 was created, which extends its functionality via connection to the control board named LTR001.2. Construction of the board was conducted on the bases of the needs and requirements coming from robot peripherals. The proposal was created containing the control, protection and filtering features. Further, the board was realized and inhabited. Using MX05 creates a great simplification of wiring and there is implied the extension of the original features that are useful not only in robots Brontes.
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Some Aspects of EMC Pre-Compliance Testing
Vídenka, Rostislav ; Soldán, Josef (referee) ; Mazánek, Miloš (referee) ; Dřínovský, Jiří (advisor)
This doctoral thesis deals with EMC pre-compliance testing of radiated disturbance. The thesis summarizes present pieces of knowledge about restricting of disturbing ambient signals and focuses on restricting of test site imperfection influence on the measurement results. Pre-compliance test site “calibration” uses comparison signal sources. There were added up the recommendations for “calibration” steps, too. The semi-anechoic vs. fully-anechoic chambers measurements results were compared. Some methods for dealing with ambient disturbing signals were discussed and high attention was applied to the test site choice and the minimal dimension geometry was recommended. There are presented recommendations for pre-compliance radiated disturbance measurements in the conclusion with the stress on available test equipment.
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Relay output module for electronic tachograph
Feilhauer, Petr ; Sirka, Martin (referee) ; Zezulka, František (advisor)
This bachelor thesis contains detailed description of function and wiring current Electronic tachograph RE1xx from company UniControls-Tramex. For comparison there is mentioned description of competitor’s products from this branch. The part of this thesis is analysis of measurement actual speed on the train vehicles and analysis of imaging information to staff of vehicle. The base of this finding is making several projects about future way of development of this electronic tachograph. Main programmes of this thesis are design, implementation and verification functions of module relays outputs for Electronic tachograph RE1xx. Practically design must be satisfy with basic technical-law specifications, which refer of this branch for application this device. Thesis contains the description of single parts of scheme, control microcontroller, using of integrated circuits. Further thesis will contain theoretical calculations, design of main software and his implementation to the module. The aim of design and implementation of module relays outputs is evaluation reached outcomes from view technical solutions, functions and price statement of the module.
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Oscilloscope module with wireless data transmission
Kočík, Karol ; Svoboda, Vít (referee) ; Havlíková, Marie (advisor)
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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Nonstandard test of energy meters
Jurka, Tomáš ; Drápela, Jiří (referee) ; Wasserbauer, Vojtěch (advisor)
This thesis covers a brief overview of the development of the energy meter technology as well as a division of the modern energy meters and a description of the functions of electromechanical and static energy meters. The thesis also contains a list and a simple description of the type tests in compliance with the applicable standards relevant to the energy meters. Furthermore, the thesis describes the impact of differential disturbances in the band from 2 kHz to 250 kHz. The paper also defines the IEC-61000-4-19 standard and describes the testing system for measuring the impact of differential disturbances in the band from 2 kHz to 150 kHz. The thesis includes a description of the data acquisition software that was created in the Matlab program. The final part of the paper focuses on a description of the results of parametric tests and the proposal for their adjustments.
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Monitoring interference in the mains supply
Jirčík, Zdeněk ; Kubánek, David (referee) ; Zeman, Václav (advisor)
This semester thesis describes design of electronic device adapted to monitoring of mains supply. Theoretical parts describes mains supply analysis, communication and management of files to memory. Next part is design electronics blocks and their cooperation. There are description of mains analyzer prototype and it’s parts and functions. Prototype was submitted to test measurement.
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Numerical EM analysis of semi-composite model of EV55 aircraft
Krutílek, David ; Olivová,, Jana (referee) ; Kadlec, Petr (advisor)
This thesis deals with problems of electromagnetic fields' simulations in the aerospace industry. Electromagnetic effects of the external environment that maybe met during a standard flight (high-intensity radiated fields and lightning strike) are described hereinafter with a reference to their simulations on a digital mockup. A brief summary of the nowadays methods and solvers in computational electromagnetics to be practically used for the modeling and simulations in this field is elaborated as a base for the following parts of the diploma task. The next goal was to create a convenient model simulation of the researched object semi-composite aircraft EV55, on which chosen computing methods will be compared with the results of the real measuring.
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EMC of switched-mode power supplies
Olivík, Lukáš ; Dřínovský, Jiří (referee) ; Kolka, Zdeněk (advisor)
The goal of this thesis is to design flyback converter with given parameters complying with standards for electromagnetic compatibility. This thesis describes detailed design of the flyback converter. It summarizes the recommendations for PCB design. Knowledge from number of comparative measurements of the impact of component selection on conducted emission signature was applied during the flyback converter design. Big part of the thesis is aimed on conducted emission measurement and separation of common mode and differential mode emissions. The simple and fast Time domain measurement of conducted emission is described. Final measurement of designed converter was performed at the end of the thesis.
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