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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Zařízení pro testování termoelektrických modulů / Equipment for testing of thermoelectric modules

Frank, Vojtěch January 2018 (has links)
Goal of this thesis is to specify needed upgrades of current aparatus used for measuring parameters of thermoelectic modules, witch was constructed at the Enegry institute of Faculty of Mechanical Engineering, Brno University of Technology. In this theseis current state of aparatus where reviewed and specifications for updates where made. These specifications where used to create plans for new aparatus. Quality of designed aparatus where verified by simulations made in ANSYS. Plans for proposed aparatus where made.
2

Binokulární vidění / Binocular vision

Brichta, Tomáš January 2012 (has links)
In this work I have been briefed by physiology of binocular vision for acquisition of three-dimensional perception from two-dimensional images using special glasses. At first I described optical organ, after it I described physiology of binocular vision. In the next part of my work I described stereoscopic imaging technology and their advantages and disadvantages. In the next part of this work I have designed method for measuring ideal distance between cameras for scanning and projection of stereoscopic image using program Inition StereoBrain Calculator. After scenes design I have collected visual data for creating 3D videos. This videos were been projected to the group of the viewers. Data from the viewers were been analyzed afterwards.
3

Konvoluční reverb s využitím technologie VST

Trtek, Stanislav January 2014 (has links)
Trtek, S. Convolution reverb using VST technology. Diploma thesis. Brno: Mendel University, 2014. The diploma thesis deals with guitar amp miking, analog and digital guitar cabinet simulation, amp modeling, digital signal processing, loudspeaker measurement using impulse response and VST -- Virtual Studio Technology. Main aim of this thesis was to implement VST plugin that realises guitar cabinet simulator reproducing typical characteristics -- dynamics and nonlinear behavior.
4

Testování aparatur pro mobilní mapování pomocí GPS (mobilní mapování pomocí GPS) / Testing of GPS devices for mobile mapping (mobile mapping with GPS)

BLAŽEK, Martin January 2009 (has links)
The diploma thesis studies accuracy of cheap GPS devices intended for mobile mapping in the landscape. Methodlogy for testing the accuracy of two GPS devices was established on the base of studied literature and apllied to two different GPS devices. The first device is PDA ASUS A639 connected by Bluetooth with external GPS reciever Navilock BT-338 and the second one is PDA ASUS A639 using its inbuilt GPS chipset. The result of testing is firstly comparison of accuracy of these two GPS devices and secondly the elements, which influnce their accuracy the most. The database of results is large enough to make some general conclusions concerning the accuracy of different GPS devices and their usage in the process of mobile mapping.
5

Konstrukční návrh aparatury pro destruktivní zkoušky termoelektrických modulů / Design of apparatus for destructive tests of thermoelectric modules

Skalický, Michal January 2020 (has links)
In order to reliably test thermoelectric modules, it is necessary to have a adequate measuring apparatus. The presented diploma thesis deals with the design of measuring apparatus capable of performing both long-term testing of thermoelectric modules at a constant high temperature and thermal cycling extension has been designed. Both types can be changed in a short time.
6

Povrchová funkcionalizace materiálů s využitím plazmových technologií / Surface functionalization of the materials by plasma technologies

TROUP, František January 2014 (has links)
This thesis deals with the plasma functionalization of nanofiber materials for biomedical applications. Nanofibers of SiO2 and PCL was functionalized using a microwave plasma in order to establish amine functional groups. The work includes theoretical assumptions selection of these materials, their properties and current use with emphasis on biomedical applications. The paper also presents the theoretical foundations of plasma technology, their principles and practical applications. The experimental part of the work includes the optimization of process parameters for each nanofiber materials, review hydrophilisation surface and material degradation through SEM and private functionalization. In conclusion outlines proposals for further action beyond the experiments of this work.
7

Studium tenkých vrstev molekulárních nanomagnetů připravených metodou Langmuira-Blodgettové a návrh úpravy Langmuirovy vaničky / Study of thin films of molecular nano-magnets prepared by Langmuir-Blodgett technique and drafting of an adapted Langmuir trough

Vaverka, Jan January 2017 (has links)
This diploma thesis focuses on studies of deposition of molecular nanomagnets doubledecker dysporsium phtalocyanine via Langmuir-Blodgett method. The thesis describes the influence of deposition parameters on structure of deposited molecular layer of doubledecker dysporsium phtalocyanine. The prepared molecular layers are analysed by X-ray reflectivity and Atomic force microscopy. Moreover, the proposal of structural changes of KSV Minimicro instrument, used for Langmuir Blodgett deposition, is described. The intended result is Langmuir trough of bigger dimensions than the recent one, which would enable to distribute molecular layers numbering about magnitude of hundreds.
8

Využití elektrických vlastností kompozitních materiálů s modifikovanou cementovou matricí / The use of Electrical Properties of Composites with Modified Cement Matrix

Macháň, Ladislav January 2015 (has links)
The dissertation thesis is focused on practical use of composite material with modified cement matrix. Especially the area of electrical behavior of composite materials in use has been examined, for strain sensing material. The experimental part solves the problematics of corrosion of carbon and metallic materials in alkaline environment of the cement matrix. The physical design of the sensor and its fabrication using functional composite cement material have been described here. The thesis has also discussed defining the influence of temperature change and humidity change on the change of electrical parameters of integrated sensors. An important part of the thesis is the area of evaluating a series of measurements of electrical parameters under dynamic loading. The thesis analyzes designed measurement method in detail, being suitable to determine electrical properties of cement composite materials including the construction of a monitoring system that enables practical application of sensors in complex structures.
9

Prilog savremenom etaloniranju strujnih mernih transformatora / The Recent Contribution to Calibration of Current Transformers Language of

Naumović Vuković Dragana 29 August 2018 (has links)
<p>U ovoj doktorskoj disertaciji prikazana je koncepcija, realizacija i potvrda nove metode<br />jednovremenog etaloniranja strujnih mernih transformatora sa dve različite merne<br />aparature. Pregledom stručne literature ne postoji podatak da je ova metoda ranije<br />primenjivana. U disertaciji su prikazane različite merne metode za ispitivanje i<br />etaloniranje mernih transformatora koje imaju primenu u savremenoj praksi i koje<br />podrazumevaju i različite merne mogućnosti. Takođe je i ekperimentalno potvrđeno<br />jednovremeno ispitivanje i etaloniranje strujnih mernih transformatora sa nekoliko<br />mernih aparatura koje su zasnovane na različitim metodama. Sprovedna istraživanja i<br />eksperimentalni rezultati pokazuju i potvrđuju niz prednosti ovakvog načina<br />etaloniranja. Detaljna analiza komponenti merne nesigurnosti pokazala je da se<br />primenom ove metode postiže poboljšanje merne nesigurnost etaloniranja za skoro red<br />veličine u odnosu na klasično pojedinačno etaloniranje sa dve različite merne<br />aparature. Analiza uticajnih veličina na mernu nesigurnost pokazuje da se po ovoj novoj<br />metodi etaloniranja eliminiše niz komponenti od kojih su najznačajnije: uticaj<br />nejednakosti referentnih struja i ispitnog opterećenja. Istraživanja su takođe pokazala<br />da jednovremena metoda osim što doprinosi podizanju tačnosti etaloniranja strujnih<br />transformatora, ima primenu i u etaloniranju mernih aparatura za ispitivanje tačnosti<br />mernih transformatora i interkonparaciji strujnih etalon transformatora. Kroz<br />konkretne primere realizovane u praksi, razmotreni su i prikazani načini etaloniranja<br />mernih aparatura za ispitivanje tačnosti ovom novom metodom. Interkomparacijom dva<br />merna sistema visoke klase tačnosti Nacionalnog merološkog instituta Kanade<br />(National Research Council Canada), od kojih je jedna razvijena u Elektrotehničkom<br />Institutu &quot;Nikola Tesla&quot;, pokazana je i prednost primene jednovremene metode u oblasti<br />primarne metrologije strujnih mernih transformatora.</p> / <p>The dissertation presents the concept, its realisation and verification of the new method<br />of simultaneous comparison of the current transformers by two different measuring<br />apparatus. It is shown by searching the literature, that this method has not been used<br />before. In this dissertation different measuring methods for testing and calibration of<br />current transformers, with their different measuring capabilities are presented. Most of<br />them have been used in recent practice. Furthermore, the experimental verification of<br />new simultaneous calibration method is presented. For this reason some measuring<br />apparatus based on different measuring methods were used. Conducted research and<br />experimental results confirmed a number of advantages of this calibration method.<br />Detailed analysis of the components of the uncertainty of measurements shown that<br />using simultaneous method uncertainty of measurements have been improved<br />comparing to method with two individual calibration by different apparatus. In that case<br />some of the measuring uncertainty components can be neglected. The most significant<br />is component caused by variation of referent current and component caused by variation<br />of burden. The research has also showed that simultaneous method can be used for<br />calibration of measuring apparatus for current transformer accuracy testing and their<br />inter-comparisons. The ways of calibration of apparatus for current transformer accuracy<br />testing are considered and presented, through concrete examples realized in practice.<br />A high-accuracy comparison of two NRC (National Research Council Canada)<br />calibration systems were carried out by new simultaneous method. One measuring<br />system is developed at Electrical Engineering institute Nicola Tesla, Belgrade.<br />Accordingly the advantage of simultaneous method applied at the primary metrology of<br />current transformer is verified.</p>
10

Konstrukční návrh uložení měřící aparatury IMC ve vozidle / Design of Data Acquisition Equipment IMC Fastening System in the Car

Černý, Martin January 2018 (has links)
Devices for measuring the dynamic load and vibration of certain parts of the bodywork or parts of other parts of the vehicle are made using accelerometers and measuring instruments IMC. It must be simply installed into the interior of the vehicle so that it is not necessary to remove any parts of the interior and to avoid damage to all parts of the interior. The preparation must also withstand the considerable dynamic load generated by the harder operation tests.

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