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Residence Smíchovská, technological stage finishing
Skokanová, Šárka ; Krejčí, Michal (referee) ; Vlčková, Jitka Laura (advisor)
Subject of this thesis is the technological stage of completion of work, execution of external thermal insulation composite system and two variants of flat roofs, residential building Smíchovská residence in the district of Prague 13 - Smíchov. Building technology project thesis contains principles of organization of construction site equipment including drawing, technological regulations for insulation system, scaffoldings and two variants of flat roofs, budget and schedule, design mechanical assembly, wider relations routes, quality requirements and ensure and sources of risk. The work includes also comparing the cost of construction of two variants of flat roofs from the financial, time and technological aspects
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Silage trough Litkovice - construction and technology study
Zadák, Petr ; Krejčí, Michal (referee) ; Vlčková, Jitka Laura (advisor)
The Bachelor thesis deals with the construction and technology studies of the silage trough in Litkovice village. For this specific construction project will be primarily compiled a technology study of the main technological stages implementation, a technical and case report, principles of construction organization, a construction site technical report, a technological regulativ for concrete sump, health and safety regulatives at a construction site, a inspection and test plan for concreting the sump wall, a construction project time-schedule, a budget for both projects - SO01 silage trough and SO02 sump.
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Design of fuel flow meter
Krejčí, Martin ; Svoboda, Pavel (referee) ; Dvořáček, Jiří (advisor)
This thesis deals with the structural design of flow meter for fuel at petrol stations. Begin of work deals with the theory of flow measurement. The brief overview of different types of flow meters is shown here. Coriolis flow meter is described in more detail. Another part includes the design options of the flow meter. One of them is selected for further processing.
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Data compression
Krejčí, Michal ; Havlíková, Marie (referee) ; Čejka, Miloslav (advisor)
This thesis deals with lossless and losing methods of data compressions and their possible applications in the measurement engineering. In the first part of the thesis there is a theoretical elaboration which informs the reader about the basic terminology, the reasons of data compression, the usage of data compression in standard practice and the division of compression algorithms. The practical part of thesis deals with the realization of the compress algorithms in Matlab and LabWindows/CVI.
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Mechanical screens for a small hydropower plant
Krejčí, Monika ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
The first part of this bachelor thesis contains a short summary and overview of different types of screens. The main goal of this thesis is the calculation of selected parts of hydraulically driven screens and the part of this thesis is also the design of hydraulic circuit. The thesis is attached by drawing documentation of selected parts of mechanism.
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Integration od robot in production of pressure tank for common rail system
Krejčí, Monika ; Tůma, Zdeněk (referee) ; Knoflíček, Radek (advisor)
This diploma thesis is about integration process of assembly line automation on rail assembly. In the beginning is introduced Bosch Company, then follows up theoretical part about automation and assembly lines. After theoretical introduction continues description of current state of rail assembly and choice the best line for automation and its detailed description. After that, the work deals with finding of the best solution for line automation. Found solutions are evaluated using the decision matrix. After the best one of them is chosen. There is also calculation of investments, because the one of important conditions is, that payback period has to be less than two years. Next step is choice of the most suitable supplier and integrator, which can cope with all requirements. At the end of thesis is analysis of risks done and thanks to this, are potentials for improvement of workplace safety found.
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Intelligent LED Light
Krejčí, Martin ; Frýza, Tomáš (referee) ; Povalač, Aleš (advisor)
The aim of the bachelor thesis is to design and implement a prototype of intelligent LED lighting with the possibility of mixing colours (cold white, warm white, red, green and blue) and with integrated motion, smoke, temperature and pressure sensors, which can be connected to an island photovoltaic system. Create a control unit and a W(LAN) unit that will allow communication outside this closed bus using a web interface. Establish appropriate and reliable communication between all proposed system units. The thesis first describes lighting, its history and the use of multi-colour LED lighting today. Then all the buses used are described. The design of the device itself consists of a 3D model of the prototype LED lighting embedded in the ceiling, followed by the selection of the specific integrated circuits, microcontroller kits and other peripherals needed. At the end of the paper, the measurement results of all the designed components of the device are summarized.
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Construction and production of modeller CNC milling machine
Krejčí, Miloš ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The purpose of this bachelor thesis is to design and manufacture a modeller CNC milling machine. The work includes introduction of modeller CNC milling machines available on the market and their comparison. The thesis also contains custom design of modeller CNC milling machine, followed by prototype manufacturing and testing. The design includes calculation and experimental verification of stepper motor parameters, frame sizing, load simulation and selection of suitable control electronics. A prototype was designed to verify concept, manufacturing technologies and cost.
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Modern LED luminaire concept for road lighting
Krejčí, Miroslav ; Kovářová, Klára (referee) ; Novotný, Jan (advisor)
This thesis deals with design of optical system for road lighting luminaire. In the beginning the basic photometric quantities and assessment methodology for requirements of lighting class M are described. The next step is the programming of algorithm which evaluates the road lighting requirements using few boundary conditions. The input of the algorithm is also luminous intensity (power emitted in a particular direction). By the turning the algorithm over, it is possible to evaluate the luminous intensity from the road lighting requirements. Those luminous intensities are used in the process of modification of optical lens. The ray tracing of modified models of lenses was performed to obtain the tables of luminous intensity. The values of luminous intensity are verified in the same algorithm. Finally, the comparison of results was made including several luminaires out there.
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Technology of pouring LED strips with epoxy materials
Rudy, Veronika ; Krejčí, Miroslav (referee) ; Píška, Miroslav (advisor)
The thesis deals with the pouring of epoxy materials over LED strips. The research part contains an introduction to photometry and summarizes the types of potting compounds along with their characteristics. The practical part delves into the effect different amount of pigment has on the photometric properties. This is assessed based on verified measurements performed with the help of a goniophotometer on samples with different amounts of pigment, which were created using an integration sphere. Furthermore, a brightness analysis and a long-term outdoor test were performed.
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