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Electromagnetic compatibilty
Šimoník, Martin ; Hoder, Karel (referee) ; Havlíková, Marie (advisor)
This bachelor is focused on a problem field of electronic compabiliti as the technical side as same as biological side of it. This Thesis describes the basic concepts of EMC and also analyzis each legislative requirements and regulations of EMC. One part of this thesis include designing a test procedur for verifcation of EMC pressure measurement technology of BD SENSORS company and realization of it.
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Numerical analysis of the lightning on small aircraft
Krutílek, David ; Ochodnický, Ján (referee) ; Dražan, Libor (referee) ; Raida, Zbyněk (advisor)
This dissertation deals with the numerical analysis of effects of a lightning strike on an aircraft and with the design of the optimal composition of the composite structure in terms of lightning strike protection. When optimizing the composition, a simplified model of the composite nose section of an EV-55 aircraft is used. The optimization of the composite structure is based on results of experimental measurements and testing. On the simplified model of the nose part, the material composition of the composite is verified and the direct and indirect effects of the lightning discharge are numerically estimated
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EMD instruments and electromagnetic mmunity
Mikula, Dalibor ; Buchta,, zdeněk (referee) ; Havlíková, Marie (advisor)
The work deals with implantable devices and possibilities of interference of elektromagnetic field. At first, the electromagnetic compatibility is discussed. Basic terms are explained, followed by insisting on resources of possible distrurbing of implantable devices and standards dealing with this issue. Furthermore, short chapter about devices affecting function of implantable devices is introduced. It means devices which patients with implantable devices may meet in common life, as well as devices used in common life, also devices used jn medical environment. In the next part, measuring process of electromamagnetic effect in working compartment of FN Brno magnetotheraphy and elektrotheraphy is devised. There is a concept of measuring card thanks to which impulses of implantable devices are measured. Finally, a description of measuring on implantable devices in FN Brno. MIKULA, D. EMD instruments and electromagnetic immunity. Brno, 2009. 74 s. Master’s thesis in Brno University of technology on faculty of elektrical engeenerig and communication. Supervisor Ing. Marie Havlíková , Ph.D.
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Design Rules for Electronic Systems with ATMEL Microprocessors from the EMC Point of View
Kaštan, Jiří ; Svačina, Jiří (referee) ; Urbanec, Tomáš (advisor)
This diploma thesis is dealing with the basic knowledge of the Electromagnetic compatibility. It’s concretely target on electromagnetic interference flowing from the application of electronic gas control by Honeywell company. Author compile the power control board with including software in language C. The next alternates of power control board with the separated microprocessor were designed for the more extended source detection. On these boards there were explored shielding surface features placed directly under the microprocessor. The application reducing the interference was designed in accordance to the rules finding out during this diploma thesis writing.
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Numerical solutions of EMC problems of small airplanes
Šeděnka, Vladimír ; Dědková, Jarmila (referee) ; Mazánek, Miloš (referee) ; Raida, Zbyněk (advisor)
Disertace popisuje současné problémy v certifikaci malých letadel, které by se měly v budoucnu řešit numerickým modelováním. Tento postup má zefektivnit návrh a zlevnit certifikaci letadel. Práce je úzce spjata s projektem HIRF-SE, který se problematikou certifikace letadel numerickými metodami zabývá. Podstatná část práce je věnována popisu dvou modulů pro platformu HIRF-SE: řešič BUTFE založený na metodě konečných prvků v časové oblasti a budicí nástroj BUTFE_EXC. Práce popisuje řešení pohlcujících okrajových podmínek, modelování disperzních a anizotropních materiálů a aproximaci tenkých drátů. Speciální pozornost je věnována řešení aproximace tenkých drátů s ostrými ohyby, jejíž současná formulace způsobuje překryvy mezi jednotlivými segmenty drátu.
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Tests of motor operarators for low voltage circuit-breakers
Mlynář, Zdeněk ; Polák, Jiří (referee) ; Valenta, Jiří (advisor)
Nowadays increasing demands for energy, safe use and automation in modern systems. The last two mentioned areas can now be relatively easily done using low voltage circuit breakers, along with accessories. The main element is a motor operator of circuit breaker that can operate fully automatically. But that could be the motor operator together with a circuit breaker is sold, it is necessary to fulfill a number of requirements. This work deals with their summarization, partitioning and sequential treatment of individual tests that are necessary for motor operator or required by customers.
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Electromagnetic compatibility testing procedures
Kohůt, Miroslav ; Šlezingr, Jan (referee) ; Drápela, Jiří (advisor)
The theme of this work is to test the electromagnetic compatibility of appliances, work therefore the issue of electromagnetic compatibility and interference testing is mainly based on the interference sources (appliances) and electromagnetic susceptibility testing of appliances to interference. The work contains a description of each type of measurement of disturbances and immunity to both low frequency and high frequency. Bachelor thesis in its practical part deals with the implementation of selected testing according to applicable standards at the premises of the laboratory Institute of Electrical Measurement Electrical Power Engineering FEEC in Brno.
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Measurements of electromagnetic interference in anechoic and semi-anechoic chambers
Deneš, Roman ; Růžek, Václav (referee) ; Dřínovský, Jiří (advisor)
This thesis is focused on a detailed analysis of the mechanisms of electromagnetic wave propagation in anechoic chambers. The analysis takes into account the influence of the measurement distance, setup of anechoic chamber and other parameters. Furthermore, the work deals with a validation of both types of anechoic chambers and examines the impact of selected parameters on the measurement results. Based on the theoretical analysis and practical measurement, the comparation between semi and fully anechoic chamber, or a three and ten meter measuring distance was made. This thesis also contains a detailed analysis of sources of the uncertainty.
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Electromagnetic compatibility of tram equipment
Gavshin, Ruslan ; Jarolín, Zdeněk (referee) ; Drápela, Jiří (advisor)
This diploma thesis deals with the issue of EMC of tram vehicles and traction system. The first chapter defines the issues that are then dealt with in the thesis. The next chapter lists the objectives of the work. Subsequent chapters analyze the issues described in chapter 2. In the last chapter, a flow chart is proposed, which should serve as a tool to estimate the hazards of the traction drive due to induced bearing currents.
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Virtual Measurement System for the Anechoic Chambers
Váško, Ondřej ; Soldán, Josef (referee) ; Dřínovský, Jiří (advisor)
Master thesis examines a selected part of electromagnetic compatibility. In this work, there is theoretically discussed how electromagnetic interference appears and how is spread through free space environment. To eliminate ambient interference signals, the measurements have been performed in anechoic chamber where the undesirable interference signals were suppressed. In the thesis, there are also described parameters of EMI receivers and limits of electromagnetic interference. The description of calculations of the antenna height for finding maximum intensity of electric field strength for standard measurement distance has been made. For proposed transformed measurement distance, calculations of intensity electric field with addition of parameters measuring antenna and object under test were performed. Correction curves for conversion intensity electric field have been obtained as the result.
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