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Radioactive measurement with geolocation record
Bali-Jenčíková, Kateřina ; Janoušek, Oto (referee) ; Sekora, Jiří (advisor)
This diploma thesis deals with radioactivity research, types of radioactive radiation and radiation detection. There are described types of ionization radiation detectors. The diploma thesis contains the description and principle of the GPS system function. The content is also a proposal with the subsequent realization of a detection device allowing the recording of geolocation. The resulting device is fully mobile with battery status indication. The results are recorded on the SD card.
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Evaluation of vehicle security systems
Škach, Dominik ; Hart, Jan (advisor) ; Kotek, Tomáš (referee)
The aim of this bachelor thesis is to valorize a car security systems. Firstly it is discribed mechanical locking of vehicles, where is possible to find instructions how to lock various components of the car. The next chapter is a description of car electronic security. There is described how detectors, alarm and emergency systems work. There is also intention to permanent vehicle identification systems and GPS searching systems. Practical part of bachelor thesis is focused on comparing three specific vehicles. There is also comparision between electronic security from production and between additionally installed security.
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Lighting LED module for contactless measurement of physiological parameters
Byrtus, David ; Harabiš, Vratislav (referee) ; Kolář, Radim (advisor)
This thesis describes the design of the illumination LED module for contactless measurement of basic physiological parameters. Contactless methods is based on the fotopletysmografických methods. The acquisition parameters used video camera for monitoring body part of the patient. Designed lighting LED module is used to enhance the optical signal with respect to quantum efficiency of the camera used. The acquired video sequences are then programmatically processed, analyzed, and the result is an estimate of the measured parameter.
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Fast feature matching for simultaneous localization and mapping
Mikšík, Ondřej ; Richter, Miloslav (referee) ; Mikolajczyk,, Krystian (advisor)
Bakalářská práce se zabývá rychlým vyhledáváním lokálních obrazových vlastností v rozsáhlých databázích pro simultánní lokalizaci a mapování prostředí. Součástí práce je krátký přehled detektorů a deskriptorů invariantních vůči rotaci, translaci, změně měřítka a affinitě. Pro řadu aplikací z oblasti počítačového vidění (SLAM, object retrieval, wide–robust baseline stereo, tracking, . . . ) je odezva reálném čase naprosto nezbytná. Jako řešení sublineární časové náročnosti vyhledávání v databázích bylo navrženo použití vícenásobných náhodně generovaných KD–stromů. Dále je předkládán nový způsob dělení dat do vícenásobných KD–stromů. Navíc byl navržen nový, obecně použitelný vyhodnocovací software (podporovány jsou KD–stromy, BBD-stromy a k-means stromy.)
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Measurement and analysis of the detector preamplifier
Temel, Aleš ; republic, David Novák - FEI Czech (referee) ; Klusáček, Stanislav (advisor)
This paper investigates noise characteristics of detector preamplifier in electron scanning microscopes. Various preamplifiers are measured and the lowest noise level amplifier with good level of speed is used. Further measurement of individual levels of amplifier is done and proposed the most suitable way how to achieve the total amplification. By detailed measuring of amplifier structure are found all unpleasant factors that affect the image quality. On the basis of these dates amplifier hardware is adjusted, software solutions to improve image quality designed and model control implemented, which directly controls active elements of preamplifier so that noise for given amplification was the lowest and reached required amplification.
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Imaging of the voltage contrast in environmental SEM
Romanovský, Vladimír ; Autrata, Rudolf
Current methodology of imaging in the scanning electron microscopy is based on the detection of signal electrons that carry topografic and materialcontrast of specimens under study. Electronic devices can be observed because in their standard working mode voltage differences on component surfaces are visualized by means of the voltage contrast. This contrast can be acquired in nearly any commercially available scanning electron microscopeby detection and subsequent analysis of secondary electrons.
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