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NVH Analysis of Transmissions
Gazda, Silvester ; Zubík, Martin (referee) ; Prokop, Aleš (advisor)
This bachelor's thesis deals with the design of measuring noise and vibration of vehicle transmissions. First describes the main parts of the transmission. This is followed by a description of sources of vibration and noise, and their travel. Significant work is devoted to analysis of the frequency spectrum, of its creation and evaluation. It also includes a description of the measurement and the necessary equipment, along with a description of the basic principles of its functioning.
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Raspberry Pi - Model Tasks
Klobušický, Martin ; Chlubna, Tomáš (referee) ; Zemčík, Pavel (advisor)
The main goal of this bachelor thesis was to sumarize current solutions and projects that use Raspberry Pi and implementation of tasks that could be solved on Raspberry Pi. Task should be designed for educational and demonstration purposes. The first task is a framework for audio data processing. The second task is an information system that acquires and displays data from a sensor for measuring temperature and humidity
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Acccelerometer signal processing for vibration measurement
Marčišovský, Peter ; Šteffan, Pavel (referee) ; Musil, Vladislav (advisor)
Táto diplomová práca sa zaoberá návrhom zariadenia schopného vysoko presného merania vibrácií za použitia piezoelektrického akcelerometra. Zariadenie je určené na vyhodnocovanie zdravotného stavu strojov, najmä elektrických strojov ako elektromotor, veterná turbína a iné. Za účelom dosiahnutia vysoko presného a vysoko lineárneho merania v spektre extrémne nízkych frekvencií siahajúcich až ku jednosmerným napätím, cez sub-hertzové pásma po desiatky hertzov, ale aj vo vyšších frekvenciách, bola vyžadovaná možnosť použitia prístupu s jednosmernou väzbou zvaného "posúvanie napäťovej úrovne" a následné vyhodnotenie a porovnanie prístupu so striedavou väzbou, ktorý sa bežne používa pre pripojenie piezoelektrického akcelerometra.
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Radar Signal Diffusion Simulator
Ormoš, Michal ; Zemčík, Pavel (referee) ; Maršík, Lukáš (advisor)
Aim of this paper as the title suggest is creating radar simulator, which is capable of build up whole process of capturing broadcasting signal. From radar broadcasting, through his simple rebound from object up to capturing the returning signal back to radar. All this in virtual environment.The problem was solved in Matlab programming environment, in a manner of simulation of three dimensional area, which contains arbitrarily moving points. The points represent radar and object on which is radar aiming. Within the environment we are calculating, obtaining and processing all necessary data. From distance, angles to calculations of frequency and power of returning signal.The result of this work is full-valued simulated environment, which demonstrate whole process of capturing moving object by radar to display it in spectogram, which contains information about object passing the radar. Output is raw signal responded to Doppler shift, emerging in simulated environment. Simulator serve for creating the early concept.
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Signal Analyzer Based on DVB-T USB Tuner
Belica, Martin ; Grézl, František (referee) ; Černocký, Jan (advisor)
This bachelor thesis deals with the detection and analysis of a radio signals with the DVB-T USB tuner. The first step of the analysis is to capture some radio signal, in this case using a USB tuner. The next step is the appliction of signal processing algorithms. The most important algorithm for analysis is a discrete Fourier transform that is used to obtain a signal spectrum. Finally, several demodulation and filtering algorithms are used to better interpret the analyzed signal to the user.
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Response analysis of train track laboratory model
Heteš, Marek ; Věchet, Stanislav (referee) ; Kšica, Filip (advisor)
In terms of safety, railway tracks have to be kept in good condition. Early and accurate detection of track defects can save both time and money. This thesis deals with simulation of a passing train on laboratory apparatus, and the measurement of the generated response. Apparatus represents scaled down section of a railway track, and allows the simulation of defect formation. With the help of the obtained data, a suitable method for defect detection was created.
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Mobile Applications for Real-Time Noise Removal
Siladi, František ; Skácel, Miroslav (referee) ; Novotný, Ondřej (advisor)
The goal of this bachelor's thesis is to create a mobile application which will remove the noise from speech in real time. The first chapter describes the theory related to signal processing and described filters for denoising. The following chapter summarizes existing solutions. The third chapter contains my own design and implementation. At the end of this thesis is the evaluation of the application and evaluation from users.
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Response analysis of train track laboratory model
Heteš, Marek ; Věchet, Stanislav (referee) ; Kšica, Filip (advisor)
In terms of safety, railway tracks have to be kept in good condition. Early and accurate detection of track defects can save both time and money. This thesis deals with simulation of a passing train on laboratory apparatus, and the measurement of the generated response. Apparatus represents scaled down section of a railway track, and allows the simulation of defect formation. With the help of the obtained data, a suitable method for defect detection was created.
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Raspberry Pi - Model Tasks
Klobušický, Martin ; Chlubna, Tomáš (referee) ; Zemčík, Pavel (advisor)
The main goal of this bachelor thesis was to sumarize current solutions and projects that use Raspberry Pi and implementation of tasks that could be solved on Raspberry Pi. Task should be designed for educational and demonstration purposes. The first task is a framework for audio data processing. The second task is an information system that acquires and displays data from a sensor for measuring temperature and humidity
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Acccelerometer signal processing for vibration measurement
Marčišovský, Peter ; Šteffan, Pavel (referee) ; Musil, Vladislav (advisor)
Táto diplomová práca sa zaoberá návrhom zariadenia schopného vysoko presného merania vibrácií za použitia piezoelektrického akcelerometra. Zariadenie je určené na vyhodnocovanie zdravotného stavu strojov, najmä elektrických strojov ako elektromotor, veterná turbína a iné. Za účelom dosiahnutia vysoko presného a vysoko lineárneho merania v spektre extrémne nízkych frekvencií siahajúcich až ku jednosmerným napätím, cez sub-hertzové pásma po desiatky hertzov, ale aj vo vyšších frekvenciách, bola vyžadovaná možnosť použitia prístupu s jednosmernou väzbou zvaného "posúvanie napäťovej úrovne" a následné vyhodnotenie a porovnanie prístupu so striedavou väzbou, ktorý sa bežne používa pre pripojenie piezoelektrického akcelerometra.
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