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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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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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Non-destructive testing of gear-wheels
Krejčí, Martin ; Juliš, Martin (referee) ; Čech, Jaroslav (advisor)
This diploma thesis resolves aplication of particular non-destructive testing methods while producing castings of steel wheels and quality control of this process. There are described fundamentals of flaw detection, determination of flaw-generation cause and suggestions for optimalization of casting process and increasing of its quality.
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Design of Coriolis flowmeter
Krejčí, Martin ; Zikmund, Vladimír (referee) ; Dvořáček, Jiří (advisor)
This thesis deals with the structural design of mass flowmeter based on the principle of the Coriolis force. The introduction explains how the Coriolis flowmeter operates, what types of flowmeters are currently being produced and what are the important parameters. There are appointed some of the principles that must be followed to the meter working correctly. It contains a proposal design of flowmeter for pipes DN80 and. Includes drawings for this design.
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Teniferation - Unconventional Method of Carbo-nitration
Krejčí, Martin ; Gerstenberger, Jan (referee) ; Molliková, Eva (advisor)
Tenifer is a method of thermochemical treatment, concretely comes within the area of carbonitration methods. The saturation with nitrogen and carbon is carried out in special salt bath. Tenifer treatment achieves variety of final properties, which another method of treatment cannot ensure. Method is widely used in automobile and armament industry at this time. The purpose of this retrieval is to inform about principles, options and utilisation of this technology.
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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 cold white, warm white, red, green and blue colours. To create communication, control units including a W(LAN) unit that will allow communication outside this closed bus. This thesis is the first to describe light and its history. The design of the device itself consists of a 3D model of a prototype LED light embedded in the ceiling, followed by the selection of the specific circuits used. In the design, the shortcomings of today’s smart wiring systems were taken into account. The thesis concludes with a description of the hand-fitting of the circuit boards and the measurement results of the designed LED exciters.
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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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Company's valuation of importance on the market
Krejčí, Martin ; Hollmannová, Monika (advisor) ; Šolc, Jan (referee)
This modern 21th century is mainly dependent on various kinds of valuations. These are made by different ways of economical counting and models. Most of the counting is being done by various professional external rating agencies. Eg. rating agencies with their bonity asset valuation, national rating agencies, tax rating agencies, etc. Also different types of the best company charts by prestigious magazines are found in this category. These types of ratings are constructed by really complex systems of algorithms and many statistical calculations are made. For my bachelor thesis I have been inspirited by web page ranking called "page rank". This is used for web page comparison and recognition which one is better to be used for example. Final rating result is very useful instrument for marketing agencies. Eg. to decide on which web page use their banners and advertisement. In my work, I would like to define a hypothesis that there is a countable validate index set which might generate some kind of authenticable company's index to describe its authenticity, solvency or even durability. Let's call it "Firm-rating". Main aim of this thesis is to describe and rationalize these indexes. Anyway, at the close, I would like to describe system of counting such an index and I will try to find a way how to...
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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 cold white, warm white, red, green and blue colours. To create communication, control units including a W(LAN) unit that will allow communication outside this closed bus. This thesis is the first to describe light and its history. The design of the device itself consists of a 3D model of a prototype LED light embedded in the ceiling, followed by the selection of the specific circuits used. In the design, the shortcomings of today’s smart wiring systems were taken into account. The thesis concludes with a description of the hand-fitting of the circuit boards and the measurement results of the designed LED exciters.
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