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Portable digitally controlled function generator
Graf, Daniel ; Kufa, Jan (referee) ; Kolář, Ondřej (advisor)
Tato bakalářská práce se věnuje návrhu desky plošných spojů a sestrojení přenosného digitálně ovládaného funkčního generátoru při využití AD9833 integrovaného obvodu přímé digitální syntézy. Generátor je schopný generovat tři typy výstupních průběhů (harmonický průběh, trojúhelník a obdélník), přepínat mezi výstupní impedancí (módy 50\,$\Omega$ a HighZ), generovat průběhy do frekvence až do 12,5\,MHz. Zařízení také umožňuje změny amplitudy a přidávání DC offsetu. V teoretické části je popsán postup, kterým bylo zařízení navrženo a jakým způsobem bylo zamýšleno, aby zařízení fungovalo. Popsán je výběr vhodných bateriových článků pro takové zařízení, výběr vhodného mikrokontroleru, základy teorie přímé digitální syntézy nebo návrh analogového konce pro nastavení amplitudy a DC offsetu. Aplikační část již popisuje, které součástky byly vybrány, které problémy se vyskytly a jakým způsobem byly problémy vyřešeny, jakým způsobem je provedeno ovládání, rozhraní zařízení a jak byl naprogramován software pro tuto aplikaci, která umožnuje ovládání zařízení pomocí počítače přes sériový terminál díky naprogramovanému SCPI protokolu. Kapitola Měření se zaobírá nejen výsledky jednotlivých měření, ale také řešením komplikací, které se objevily kvůli chybě v návrhu desky plošných spojů. V této kapitole jsou uvedeny schémata, grafy a tabulky výsledků měření, zhodnocení měření a následovné porovnání výsledků zařízení s komerčními možnostmi na trhu.
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Design of beer tap
Vaňková, Klára ; Sládek, Josef (referee) ; Ondra, Martin (advisor)
The subject of my bachelor thesis is the design of a beer tap, in particular portable beer cooler and dispenser with a built in air compressor which has to comply with demanding constructional, ergonomic and aesthetic requirements. The ultimate goal of the designing process is to facilitate the portability of the dispenser and enhance its looks by creating a new visual style relating to the Czech tradition.
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Design of Portable Espresso Maker
Kosová, Barbora ; Křenek, Ladislav (referee) ; Sládek, Josef (advisor)
This Bachelor‘s thesis deals with a design of portable espresso coffeemaker considering ergonomic, constructional and aesthetic requirements. Although, the design primarily focuses on low weight and compactness, it simultaneously seeks to keep all essential parameters of a proper espresso. Furthermore, the thesis also deals with the design of accompanying components, such as a travel case or an espresso cup.
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Portable device for impedance measurement
Kopic, Jan ; Hruboš, Zdeněk (referee) ; Šotner, Roman (advisor)
This thesis targets on design of portable device for impedance measurement. Theoretical knowledge related to the construction of a portable impedance analyzer is summarized in a separate chapter. This section also compares some commercially available impedance analyzers. In addition, this thesis contains a description of the principle of operation of the impedance analyzer, which is divided into individual function blocks and supplemented by control circuits. A large part of the work focuses on the design of the analog measurement circuit, where suitable measuring methods are also presented. The functionality of the analog blocks of the device was verified by circuit simulation in the PSpice program and by experimental tests. Selection of some components is mentioned in the relevant chapters, where the essential parameters from datasheets are listed. The output of the work deals with a designed prototype of the device, which was tested. Based on the findings some modifications of the device were proposed for practical usability. The attachment of the thesis contains final version of designed printed circuit board.
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Design of Portable 3D Scanner
Štigler, Jaroslav ; Rubínová, Dana (referee) ; Sovják, Richard (advisor)
The topic of this bachelor‘s thesis is design of handheld 3D scanner. This scanner belongs in the higher price category. This thesis deals with problems like long working time, watching monitor during scanning, versatility and safety measures from mechanical damage. Ergonomic solution is also very important. This design is based on a simple and functional shaping. Shaping and color solution corresponds with its use in industry. This scanner also can be used in other fields (for example: medical sector, design, archeology, etc.).
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Folding mechanism for mobile satellite antenna
Buchta, Tomáš ; Koutecký, Tomáš (referee) ; Brandejs, Jan (advisor)
The aim of this bachelor thesis is the design and construction of a manipulating mechanism for a satellite antenna, mainly for use on vehicles that will be able to work even in adverse weather conditions. The design and manufacturing of the device should provide sufficient positioning accuracy and toughness of the structure. Since this is a prototype therefore the design solutions should be chosen with regard to simplicity of production.
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Design of portable beamer
Semrád, David ; Řezníček, Svatopluk (referee) ; Křenek, Ladislav (advisor)
The main aim of this thesis is the application of ideas to achieve innovation and modernization in the field of design of portable projectors. Another aim is to show that the award of his own creative activity and the ability to move an object from the field of functionality to aesthetics, ergonomics and practicality at an affordable verified techniques, current manufacturing technologies and materials.
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Design of Portable Fluorescence Immunoassay Analyzer
Filková, Adriana ; Sládek, Josef (referee) ; Fridrichová, Eva (advisor)
The subject of this bachelor's thesis is a design of a portable fluorescence immunological analyzer for laboratory and healthcare facilities. The main requirements encompassed durability, ergonomics, and easy sample manipulation. Based on technical and design analysis, a custom design was developed, incorporating a stand for holding a testing mico tube, automatic slot opening, a touchscreen display, and an on/off button. The lateral sides of the product are ergonomically rounded and feature anti-slip grooving. To enhance durability, the touchscreen display is recessed into the top surface of the analyzer. The design of the resulting proposal is non-intrusive and meets the environmental conditions for which it is intended.
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Portable device for impedance measurement
Kopic, Jan ; Hruboš, Zdeněk (referee) ; Šotner, Roman (advisor)
This thesis targets on design of portable device for impedance measurement. Theoretical knowledge related to the construction of a portable impedance analyzer is summarized in a separate chapter. This section also compares some commercially available impedance analyzers. In addition, this thesis contains a description of the principle of operation of the impedance analyzer, which is divided into individual function blocks and supplemented by control circuits. A large part of the work focuses on the design of the analog measurement circuit, where suitable measuring methods are also presented. The functionality of the analog blocks of the device was verified by circuit simulation in the PSpice program and by experimental tests. Selection of some components is mentioned in the relevant chapters, where the essential parameters from datasheets are listed. The output of the work deals with a designed prototype of the device, which was tested. Based on the findings some modifications of the device were proposed for practical usability. The attachment of the thesis contains final version of designed printed circuit board.
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