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Design of equipment for hydrostatic pressure monitoring
Zahrádka, Michal ; Bražina, Jakub (referee) ; Pruša, Radomír (advisor)
The purpose of bachelor thesis is the design and manufacture of a leveling electronic hydrostatic device. Part of the thesis is a research for current leveling equipment and pressure measurement methods with emphasis on the measurement of hydrostatic pressure. The entire device is to be implemented on the Arduino development platform. The use of the assembled meter is assumed in the construction industry.
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Pressure monitor for microfluidic systems
Romaňák, Adam ; Sekora, Jiří (referee) ; Čmiel, Vratislav (advisor)
The diploma thesis deals with measuring pressure in microfluidic systems. The theoretical part of the work is devoted to microfluidics, pressure in liquids, pressure measurement, distribution of pressure sensors, and their specifications. Then follows the hardware and software solution of the measuring system for measuring the pressure in the microfluidic system using microprocessor technology. The practical part covers the hardware and software implementation of the measuring system.
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Measurement of selected physical quantities
Zajíček, Matouš ; Štěpánek, Vojtěch (referee) ; Pruša, Radomír (advisor)
In the introduction of this thesis a brief literary research of existing types and principles of function of selected sensors of temperature, atmospheric pressure, relative humidity, weight and island electric energy sources is performed. The next part is focused on realization of measuring system, meant for usage on beehive, using Arduino development platform. In the final parts of thesis, a control measurement, verifying function of the system, is performed and energy consumption is evaluated, along with designing a suitable power supply.
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Pressure pulsation propagation in elastic hoses
Čapoš, Eduard ; Pochylý, František (referee) ; Habán, Vladimír (advisor)
This thesis deals with propagation of pressure and flow pulsations, which are strongly affected by the tube flexibility. There are two mathematic models introduced, which are derived from basic physical relations. First model assumes velocity only in the axis direction. Second one assumes also non-zero radial velocity. Kelvin-Voigt model for viscoelasticity was used. Furthermore, experimental measurement was designed and evaluated. Measured data was used to calculate material properties. In addition, dynamic transfer was determined.
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Switching arc diagnostics in DC contactor
Píška, Jakub ; Kloc, Petr (referee) ; Valenta, Jiří (advisor)
Cílem této diplomové práce bylo provést diagnostiku vysokonapěťového stejnosměrného stykače se zaměřením na zpětnou komutaci a lepení oblouku, navrhnout a ověřit úpravy, které odstraní tyto negativní jevy. Měření obloukového napětí, tlaku a pomocí rychlokamery byly použity při diagnostice těchto jevů. Změny na arcrunnerech a jhu magnetického obvodu byly využity při jejich odstraňování. Úpravy na arcrunneru zmenšily skokové nárusty délky oblouku a úpravy na jhu navýšily sílu na oblouk mezi rozevírajícími se kontakty. Navrhnuté změny na stykači snížily časovou ztrátu v důsledku zpětné komutace, a tak zkrátily čas přenosu oblouku.
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Supersonic Flow Measurement Within A Lowpressure
Area
Bayer, Robert ; Hlavatá, Pavla ; Bílek, Michal
The goal of this paper is to describe the idea of measuring a supersonic gas flow within low-pressure areas in order to describe its behavior and to compare the measurement data with the generally described supersonic gas flow behavior derived from its behavior within high-pressure areas. This data should help to make low-pressure supersonic flow simulations more accurate.
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Physical phenomena in air transport
Bělehrádek, Lukáš ; Uher, Pavel (referee) ; Rubinová, Olga (advisor)
The aim of this thesis is to design an air conditioning system of a flat unit in two variants of piping. The piping system of the first floor is installed into the floor in one variant, in the other it is in the ceiling. Data received from measurements within the experiment have been used for the design. The result of the measurement are minor loss coefficient implemented for bending pipes and pressure losses caused by rubbing. These values are used for dimensioning piping variants. Both types of piping are described in the theoretical part and the method of how the experiment had been processed.
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Electronic Compass
Špaňhel, Petr ; Slaný, Karel (referee) ; Šimek, Václav (advisor)
This bachelor's thesis deals with a design and construction of equipment that should offer an easy approach to measurement of temperature, air pressure and angular orientation to the Earth surface. Subsequently, this set of infromation will be shown in a concise way on a graphic LCD display. The introductory chapter provides a general outline to the hardware conception, which primarily involves reading of data from sensors and their graphical visualization. Details on control firmware aspects are included in the following two chpaters. Fourth chapter is aimed at device operation and its user interface. Finally, evaluation of the results and conclusion is provided.
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