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Analysis of the influence of thermal effects on thermophotovoltaic system
Kolář, Jakub ; Vyroubal, Petr (referee) ; Šimonová, Lucie (advisor)
This semestral thesis focuses on the description of specific renewable resources in the form of thermophotovoltaic cells using selective radiators with micro/nano structures. This work deals with an introduction of renewable resources and specifically focuses on thermophotovoltaic. Thesis describes basic principles, but also influences affecting the proper functioning of these systems. It also focuses on selective radiators, which are created by mikro/nano structures, and factors that can affect their implementation or simulation. Part of the work are also examples of calculations of basic parameters of the structures, which will be used in the simulations. Next chapters are dealing with simulations which are analyzing thermal effects on termophotovoltaic system. Except the analysis itself there is also partial optimalization solving some of the negative thermal effects.
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Smart home control unit with Raspberry Pi
Sedlařík, Marek ; Mačák, Martin (referee) ; Vyroubal, Petr (advisor)
This bachelor’s thesis deals with the issue of smart home controlled primarily by voice. The thesis introduces this technology, with its development and with trends it is heading to. It contains description of IoT architecture, communication and transmission technology. The attributes and use of the single-board minicomputer Raspberry Pi are described and compared with individual models. The large part of this thesis deals with the design of control unit for smart home system, which will consist of suitable components and microcomputer Raspberry Pi with operating system Raspbian, where the virtual assistant Amazan Alexa is integrated. The last part deals with the design, modeling and printing of a plastic cover for a intelligent speaker.
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Cooling of Two-channel audio power-amplifier using FVM
Němec, Radek ; Kazelle, Jiří (referee) ; Vyroubal, Petr (advisor)
This bachelor´s thesis is dealing with the design and construction of two-channel audio Leach type power-amplifier, including the necessary additional components and subsequent design of the amplifier cooling using Flow Simulation tool included in the SolidWorks design system. The opening chapters is about theoretical analysis of audio amplifiers, heat transfer and description of SolidWorks design system. The main part of this thesis contains the design and construction of amplifier and design of each variants of amplifier cooling, including the best variation designed. The last part of the thesis is about assembling the amplifier and evaluation of economic aspects of its production.
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Remote control of 3D printer
Kajzr, Miroslav ; Jaššo, Kamil (referee) ; Vyroubal, Petr (advisor)
The essence of this work is to summarize the knowledge about 3D printing, especially with FDM technologies. Create an overview of used FDM printing materials, identify their advantages and disadvantages, technical parameters and usability. Another purpose of the thesis is to examine the print quality and its problems and specify types of surface finishes for selected materials. The content also includes remote control and monitoring of the 3D print process using the Raspberry Pi microcomputer and the print server named Octoprint.
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Controlling and construction of robotic arm
Sobota, David ; Vaněk, Jiří (referee) ; Vyroubal, Petr (advisor)
This work deals with creating of robotic arm including program for processor and computer interface with graphical programming for robotic arm. It search for solution, how to connect computer with board fittingly and how to create graphical interface for programming of the arm. Topic of this work is originated as the need to create learning tool for school subjects Computer projecting of production, logistic and ecology and Technological projecting and logistic.
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Multifunctional modular FDM 3D printer
Indra, Zdeněk ; Vyroubal, Petr (referee) ; Jaššo, Kamil (advisor)
This work deals with problems of 3D printers, their types according to function principle and their design. In addition to print materials, FDM printers chapter includes the types of motion systems available for FDM 3D printing, and the possibility of converting 3D printers to other CNC devices is discussed. This theory is then evaluated and the most suitable parts are used to build modular CNC machine wich is then tested in configuration of FDM 3D printer.
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Design of a semi-automatic positioning system for measuring of semiconductor chips
Kotian, Tomáš ; Vyroubal, Petr (referee) ; Otáhal, Alexandr (advisor)
The aim of this bachelor thesis is to design and create a system for a semi-automatic positioning system for the test of semiconductor chips. The work solves the problem with the implementation design to achieve the highest possible accuracy for contacting with the help of a probe card. Furthermore, the work deals with the selection of a suitable control unit for stepper motors and finally to create a program for focusing and centering the chip using the image from the camera.
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Testing of selected material properties for 3D printing
Čáslavský, František ; Mačák, Martin (referee) ; Vyroubal, Petr (advisor)
This thesis deals with 3D printing, materials used for 3D printing, testing of the materials and learning their real parameters. Goal of the thesis is comparing selected materials, executing series of mechanical test and selecting suitable material for printing high-quality plastic parts for use in automobiles, especially for reproduction of parts that are no longer made for oldtimers and for use in motorsport.
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Welder for lithium batteries
Martinček, Martin ; Jaššo, Kamil (referee) ; Vyroubal, Petr (advisor)
This Bachelor’s Thesis deals with the composition of lithium batteries, lithium cell joining, and the design of a device customised for contacting an 18650-size cylindrical cell. The first part discusses the construction, basic materials of the lithium batteries and their applications. In the next section, an overview of several methods of cell contacting and their comparison with each other is presented. The last section discusses different parts of the design and construction of the device, working on the principle of spot resistance welding.
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