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Ultrasonic Anemometer
Křepelka, Pavel ; Fialka, Jiří (referee) ; Beneš, Petr (advisor)
In the first section of this document, there are described principles of the wind measuring. Anemometers can be divides by physical principles to mechanical (propeller or cup), ultrasonic anemometers and thermoanemometers. This paper is focused to ultrasonic anemometers. In the next part, there are described principles of sound propagation in the atmosphere. There are studies of measurement theory and comparing of different approaches. Completed solutions are presented in patent exploration. Afterwards, there are introduction of market research. Important parameters of ultrasonic anemometers are highlighted. Main aim of work is designing prototype of ultrasonic anemometer. Software, hardware and construct of experimental anemometer were designed. Created anemometer was calibrated in aerodynamics tunnel and results were compared with simulation output.
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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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Mobile robot design
Uherek, Vítězslav ; Neužil, Tomáš (referee) ; Krištůfková Dvorská, Jolana (advisor)
This work deals with issues of construction and sensors used in mobile robots. At the start of this work are examples of mobile robots for all environments are introduced. The primary aim is to design autonomous mobile robot that is able to navigate from a starting point to a goal point, both given by data from GPS coordinates and data from sensors. Part of this work is a design, realization and optimal layout of sensors on RC model E-maxx.
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Piezoelectricity in technical practice
Škarabelová, Lenka ; Frk, Martin (referee) ; Kazelle, Jiří (advisor)
Bachelor's thesis is dedicated to the study of the principle and possibilities of use of the piezoelectric effect. Since the use of piezoelectric effect in electrical engineering is very extensive, the main focus is placed on the ability to exploit this effect in the field of ultrasonic and piezoelectric resonators. Next aim of this work is practically and theoretically to get acquainted with the measurement of small changes in weight, using electrochemical quartz crystal microbalance (EQCM), also with an ultrasonic equipment from company Olympus and ultrasonic defectoscopy for detection of possible imperfections in the material and their evaluation.
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Control System for Management of Water Supply at a Farm
Doležal, Aleš ; Arm, Jakub (referee) ; Jirgl, Miroslav (advisor)
This bachelor thesis deals with installing a new system for the supply and management of water on a farm. A PLC from Unitronics company was chosen with the appropriate modules for control and operation. The PLC program has been written in the UniLogic integrated development environment from Unistronics company using ladder language. The new system is controlled and monitored locally by the HMI panel and remotely by the website. The HMI and the website were created in the UniLogic Integrated Development Environment. The thesis also deals with selecting suitable sensors and components for system regulation.
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Presence monitoring by sensor network
Vician, Tomáš ; Kučera, Pavel (referee) ; Hynčica, Ondřej (advisor)
In project is described creation of aplication at base Presence monitoring by sensor network using a communication standard IEEE 802.15.4/ZigBee. Project requirements are low power consumption and fast data rate. Solution is provided for selection of suitable sensors for this project, creation of synchronization measurement, so as to not be affected by invididual sensors and transmitting data using wireless technology. In project is designed logical topology of sensor networks and applications have been developed that perform the functions of individua network elements.
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Design of ultrasonic humidifier
Šimala, Lukáš ; Rubínová, Dana (referee) ; Haltof, Vladimír (advisor)
The topic of this bachelor thesis is the design of ultrasonic humidifier, specifically it focuses on the mid-price category. The work includes analysis of the current market, than it deals with technical part. Based on market situation, development increase in demand is expected. The goal of the design is to create a concept that respects technical, ergonomic and aesthetic requirements.
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Ultrasonic anemometer
Hůlka, Jakub ; Mágr, Zdeněk (referee) ; Havlíková, Marie (advisor)
This master’s thesis deals with the construction and realization of an ultrasound anemo- meter. Individual types of anemometers are compared in this thesis, including mechanical, thermo anemometer and ultrasound anemometer. Different construction renderings and measurement principles of ultrasonic anemometers are analyzed. In addition, an experi- mental method of measuring the speed of sound by phase shift between two transmitting frequency is described in the document. This thesis includes the design of an control unit and the realization of a simple prototype of an ultrasonic anemometer. Experimental confirmation of the characteristics of the ultrasound anemometer is the last part of the document.
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2D ultrasonic positioning
Junek, Jiří ; Šťastný, Ladislav (referee) ; Hynčica, Ondřej (advisor)
This thesis deals with the implementation and evaluation of measuring directional and omni-directional ultrasonic senzors. Control of ultrasonic senzors and computation of a distance is realized by using a microrontroller Arduino Duemilanove. The first part deals with the measurement of directional sensors, their wiring and subsequent processing of the measurement is performed in Matlab. The second part deals with solving of measuring and visualization 2D position omni-directional ultrasonic senzors, implementation trilateration algorithm for calculating x and y coordinates and comparison the used filters. At the end of this thesis also includes a comparison of directional and omni-directional ultrasound and evaluate their applicability for measuring 2D position.
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