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Laser vibrometer with 2D scanning system
Rajm, Martin ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
This thesis deals in the theoretical part with the non-contact vibration measurement by single point Laser Doppler vibrometer and it concretes constructions used in practice. It deals also with the possibilities of the laser beam scanning to measure the vibrations in the plane and there are also listed suitable-commercial systems for this solution. Mentioned sweep is immediately necessary for 2D scanning vibrometer construction. In the practical part, the single-point laser vibrometer OFV-5000 was expanded by scanning galvo system, supplemented by a measuring cards for signal acquisition from the vibrometer and suitable control hardware was chosen for mentioned laser. For the resulting hardware assembly was designed and implemented in LabVIEW measurement software, to control the 2D scanning system, to set the position of the laser beam and to process and to visualize of measured vibration signals in the plane. The functionality of the developed measuring system was checked by performed measurement and visualization of the velocity vibration of restraint girder, excited by shaker.
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Flight Management System Model
Franěk, Lukáš ; Kaňa, Zdeněk (referee) ; Klusáček, Stanislav (advisor)
Diplomová práce shrnuje nejdůležitější informace o letectví, jako například základní používané termíny, popis letových fází apod. V této práci je popsán flight management system, jeho funkce a schopnosti vytvořit cenově příznivý a současně absolutně spolehlivý letový plán. V další části práce je nastíněna důležitost předpovědi počasí pro bezpečnou a současně cenově příznivou leteckou dopravu. Tato práce je vytvořena v programu Matlab a všechny bloky jsou naprogramovány jako m-funkce. Důležité části kódu jsou z důvodu názornosti zobrazeny jako vývojové diagramy. Praktická část práce je rozdělena do několika podkapitol, kde každá podkapitola popisuje jeden blok z blokového schématu pro výpočet nejistoty odhadované doby příletu. Současně je zde vysvětlena funkce ostatních bloků pro plánování letu, předpověď počasí, kombinování větrů a výpočet odhadnuté doby příletu a její nejistoty.
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Michelson's interferometer
Rýc, Jan ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
The diploma work deals with techniques of optical contactless distance and velocity measurement. A basic summary of the methods are involved. The problematic of interferometric methods for vibration measurements is analysed in detail. It contains division of interferometers, description of their function principles and also chapters dealing with elements used in interferometers such as lasers, photodetectors and elements in the ray optical way - polarizers, retarders, optical isolators. The vibration and length measurement methods are described, as well as the conception of homodyne and heterodyne detection. Part of this work focuses on the quadrature signal processing and on the proposal of algorithm for demodulation of velocity/displacement and undergoing simple motioning object deviation. This algorithm is implemented in Labview and the whole software instrument served also for visualisation of measured data of the interferometer model constructed in the laboratory. The way how to build up a model, its setting and two possible configurations suitable for homodyne detection are described. Model of interferometer is built-up on the optical breadboard. Particular components are fixed by the help of mounts. The model and software enable to measure the velocity and the vibration deviation with the light wavelength exactness. Functionality and the exactness of the laboratory model are verified by vibrometer. Effects on the measurement uncertainty are discussed here and ways how to restrain them are proposed.
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Wireless sensors network for measurement of soil water potential
Rášo, Peter ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
Cílem tohoto projektu je vytvoření bezdrátové senzorické sítě na měření sacího potenciálu půdy. Práce obsahuje výběr vhodné měřící metody obsahu vody v půdě, jejíž součástí je i tvorba kalibrač˘ní křivky. Dále se zabývá realizací hardwaru a firmwaru pro dva typy modulů. Stanice end station, obsahující snímač˘e, a základní stanice base station, která přijímá a přeposílá data. Celá aplikace je doplněna o uživatelský program, který umožňuje zálohování dat, zobrazování průběhů dat včetně dat předchozích, změnu nastavení systému spolu s možností žádosti o potřebné informace.
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Weight-In-Motion
Kašpárek, Ladislav ; Klusáček, Stanislav (referee) ; Beneš, Petr (advisor)
This Master's Thesis deals with Weight-In-Motion (WIM) Systems. It focuses on piezopolymer-coaxial-cable-based sensors. The work contains summary of WIM sensors, methods for signal processing and evaluation provided by WIM sensors. The design of WIM station including measuring chain is also drawn out here. Basic meaurements on sample output from the sensor are carried out using formely designed amplifier. By this, its properties and suitability can be assessed.
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System for measuring properties of electronic transformers
Němec, Ondřej ; Havránek, Zdeněk (referee) ; Klusáček, Stanislav (advisor)
The purpose of this thesis was to study the properties of electronic current and voltage transformers, choose the method for temperature cycle accuracy test and the development of the measuring software. Measuring software was realized in LabVIEW version 8.2. The first part describe the topic of this thesis. The second part describes various kinds of sensors and describtion of functions and specifications. The third part describe programming system LabVIEW. The fourth describe design of connection supply and measurement part of circuit. The fifth part describes used instruments. The sixth part is about used methods measuring. In the seven part is the description of the functions of this program and its control. In eight part is evaluated measurement uncertainty. In the last part are shown examples of the application program.
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Design digital optical output
Kubáč, Stanislav ; Beneš, Petr (referee) ; Klusáček, Stanislav (advisor)
This work descibes general principles of measuring the alternating current and voltage using conventional and unconventional sensors.This work shows specific parmeters conected with principles of the measurement, advantages and disadvantages of individual measuring procedures, types of output signals, precisions, limitations, ways of power and so on. Part of the work is to find optimal measurement procedure, which can be aplicated to practical measuring of alternating currents and voltage. Main part of the work concerns the realisation of optimal method of measuring alternating current.
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Power harvesting sensors
Arnošt, Karel ; Klusáček, Stanislav (referee) ; Beneš, Petr (advisor)
The thesis deals with power harvesting sensors as a source of energy. As the power requirements for microelectronics decreases the environmental energy sources become more perspective. In a few last years batteries reach a higher capacity but there is still problem with their replacement. Power harvesting sensors appears as a good solution for powering microelectronics.
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Safety Microcontroller Applications
Nacev, Nikola ; Beran, Jan (referee) ; Klusáček, Stanislav (advisor)
The deals of thesis were described methods for designing safety applications, made analysis of possible microcontroller faults of long-run system, described software and hardware methods for fault detection in microcontroller and applied some March test to microcontroller. To application were chosen MATS+, PMOVI and March SS tests. These tests were modified to word-oriented memory. Further it was made analysis of modified tests to determination fault coverage, testing times and program memory requirement. To determination of fault coverage was created virtual memory with fault function models. March tests were compared with each other and with another pattern test (checkboard test).
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