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Current sensor with digitized output signal
Hanuš, Ivan ; Vágner, Martin (referee) ; Havránek, Zdeněk (advisor)
The objective of this thesis is to describe principles of measuring of alternating current in low voltage power supply network with Rogowski coil and to study details of requirements for electronic current sensor with digital output. Furthermore to study the current solution of digitalization of output signal from Rogowski coil and to determine metrological characteristics of the digitalization module for processing the signal from the Rogowski coil as current sensor and to design a concept of an electronic current sensor unit with Rogowski coil and the digitalization module with the expected optical output. The theoretical part deals with the measurement of current using Rogowski coil, its characteristics and advantages compared to conventional current transformers. Further in the thesis there are specified the requirements for current sensor. The practical part deals with the design of digitalization module consisting of a pair of AD converters, a microcontroller and output circuits. Furthermore, the thesis deals with digital signal processing of signal from Rogowski coil. Furthermore, the thesis describes firmware for microcontroller and PC application. The result of thesis is functional circuit of electronic current sensor that processes signal from Rogowski coil and converts it to digital form.
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Current sensor with digitized output signal
Poruban, Milan ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
The main aim of this thesis is to describe principles of measuring of alternating current in low voltage power supply networks with Rogowski coil and study in detail the requirements for electronic current transformer with digital output. Farther confirm the basic parameters of Rogowski coil as an current sensor and creating its alternate electric model. Theoretical part deals issue of measuring alternating current with Rogowski coil, its properties, characteristics, construction and advantages over conventional current transformers of alternating current. There are also listed requirements for alternating current transformers and requirements for their digital output. A/D converters are also discussed. Practical part deals with measuring of parameters of Rogowski coil and creating its alternate electric model. Furthermore, the design and implementation of the input circuit for a pair of A/D converters, which represents a measurement card from NI. Data from the measuring card is processed by the program LabVIEW. The outcome of this thesis is a functional circuit that provides an analog signal pre-processing of Rogowski coils represented by installed PCB designed for 18-bit AD7690 converter and technology demonstrator, which processes the digitized signal from the measuring card.
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Use of 3d Modelling in Electronic Commerce
Charvát, Jan ; Dvořák, Jiří (referee) ; Dvořák, Jiří (advisor)
This diploma thesis deals with the possibilities of using 3D modeling in electronic commerce. It describes the theoretical basis and methods of 3D modeling, which is used. Includes description of the current state in electronic presentation, the description of the advantages and disadvantages these procedures, as well as practical implementation of 3D model.
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Central Mailroom Services Optimization
Běhounková, Jitka ; Koudelka, Antoní (referee) ; Kříž, Jiří (advisor)
The diploma thesis is a business case of a company that focuses on technical solution and specification of a process optimalization of incoming consignments and other kind of incoming documents processing. The objective of the thesis is considering all „pros and cons“ in order to be recommended either to go or not to go of the project.
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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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3D surfaces reconstruction of motorcycle body
Vašíková, Martina ; Čudek, Vladimír (referee) ; Paloušek, David (advisor)
This bachelor thesis based on the coputer programs and practical solving in the area of reverse engineering. This work contains the definition of concept of the reverse engineering; distributed digitalizing using the 3D scanning, mathematical description of curves and areas and summary of programs, which are destination for reverse engineering. The goal of this thesis is to form the 3D surface digitalized reconstruction the motorcycle body in Rhinoreverese program.
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Digitizing of exhaust piping
Janečka, Karel ; Koutný, Daniel (referee) ; Paloušek, David (advisor)
This bachelor thesis deals with the possibilities and practical use of 3D scanning systems for engineering. The work includes the distribution of basic facilities for 3D digitizing, and their basic properties. The aim of this work is familiar with the procedure in reverse engineering, which is demonstrated on a specific example, the digitization of the exhaust pipe, using the 3D scanner Atos I and CAD system CATIA.
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Optical digitizing systems
Chren, Tibor ; Paloušek, David (referee) ; Koutný, Daniel (advisor)
This thesis describes various optical systems which are used in reverse engineering and have to present basic review of systems for digitalization with main focus on optical scanners. At first, the brief summary of development in 3D scanner field is presented. In next part of the work are introduced basic techniques of getting the third dimension. Work also divides 3D scanners by the different aspects. At the end of the work, the possible use of 3D scanners is discussed.
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Digitization seminar for regional libraries
Řihák, Jakub ; Kolátor, Jan
V průběhu semináře byly akcentovány témata strategie digitalizace větších knihoven s ohledem na výběr podkladů a technologií, dále způsoby a nástroje k uchovávání, popisu a zpřístupnění digitalizovaného fondu. NTK v současnosti řeší stejné problémy jako krajské knihovny a národní knihovna, jako přínosné se tedy jeví spolupráce mezi institucemi. Podnětné byly informace o aplikacích pro Kramerius, které NTK plánuje otestovat a možnost využít institucionálního Krameria i pro jiné knihovny na základě omezení přístupu. Přínosné bylo také navázání kontaktů s oddělením NKP věnujícímu se tvorbě standardů pro metadatový popis.
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