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Tool for visualization and listening of vibration signals
Slavov, Jan ; Mancl, Vlastimil (referee) ; Čala, Martin (advisor)
This bachelor thesis deals with the development of a tool for visualization and listening of vibrational signals. The aim of the work is to find out the possibilities of the LabVIEW development environment in the area for which the application is intended, to further evaluate similar programs offered on the market and to create an application that will allow the user basic signal processing. The application also allows you to work with the myDAQ device and listen to signals through speakers, during which it will display the current playback position.
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Signal analysis options on Arduino platform
Havlíček, Michal ; Zuth, Daniel (referee) ; Huzlík, Rostislav (advisor)
The aim of this bachelors thesis is to analyse signal with Arduino platform by creation of program which is able to perform calculations of signal´s mean value, efficiency value, Fourier transform and subsequent export of these results into computes. Furthermore it examines testing of this program and evaluation of possible limitations with usage of Arduino platform.
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Measurement and signal processing with myRio kit
Heteš, Marek ; Spáčil, Tomáš (referee) ; Kšica, Filip (advisor)
This thesis deals with research of options for data acquisition and signal analysis, of the myRIO kit and LabVIEW platform. Next it describes the design of application for data acquisition and signal analysis, and the last chapter of this thesis is about testing and a practical demonstration of our application.
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System of On-/Offline temperature measurement based on Lab View
Stejskal, David ; Hammer, Miloš (referee) ; Prostredník, Daniel (advisor)
The objective of this thesis was to create a LabVIEW-based program for temperature measurement using a personal computer. The program allows reading and post processing of digital signal from a measuring device. This device consists of a sensor type PT100, a measuring transducer and an analog-to-digital converter with USB output. The theoretical part of the thesis deals with resistance temperature sensors, signal analysis and methods for signal processing. The practical part is conceived as a guide to the created program. This part introduces vital sub-elements of the program and describes their principle, practical use and also the operating instructions. As required by thesis assignment, practical part includes verification of the measuring device, which was performed in laboratory of Czech Metrology Institute in Brno.
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LoRa Signal Analysis using SDR
Jeřábek, Ondřej ; Fedra, Zbyněk (referee) ; Povalač, Aleš (advisor)
This work deal with analysis of LoRa wireless communication protocol and LoRaWAN MAC layer. Analysis aims to LoRa packet detection using software defined radio, wireless trafic and information which can be extracted (sniffed) from wireless communication between devices which uses LoRaWAN MAC layer. Next part of this work describes two wireless devices development. First one for demonstration purporses with some type of commercial LoRa modules and second to paralell sniffing of LoRa wireless communication on various frequency channels.
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Physiocrate: A SignalPlant Toolbox for Respiratory, Blood Pressure and EMG Signal Analysis
Nejedlý, Petr ; Virgala, Jan
The paper presented here describes the SignalPlant library for analysis of physiological signals. This library contains plugins for analysis of continuous blood pressure (BP), respiratory signals (RESP) and electromyographic signals (EMG). Its principal advantages are real-time previews of results, ease of use and a multi-thread approach. The library is available free and open- source under an MIT license as part of the SignalPlant project at https://signalplant.codeplex.com.
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Processing of signals from fiber optic sensors
Sikora, Vojtěch ; Urban, František (referee) ; Čučka, Milan (advisor)
First two chapters of this paper deals with the division of optical fiber sensors, digital signal processing and includes price comparison of four experimental sensors. In chapter three analysis, description and evaluation of measurment has been demonstrated on Mach - Zehnder interferometer. Last chapter is about application for signal analysis from vibration sensors. Description contains snippets from source code and graphical user interface. This paper includes three fields - fiber optics, digital signal processing and creation of application - and thanks to them it provides solid basis for study of optic fiber sensors.
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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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Research of tempo features comparing audio records
Ištvánek, Matěj ; Galáž, Zoltán (referee) ; Kiska, Tomáš (advisor)
This thesis deals with technical properties of audio signals or more precisely of recordings from the prepared database and describes parameters which are used for music transcription and analysis of audio signals. It summarises information about music theory and automatic transcription of audio recordings, introduces specialist studies that deal with problems of signal analysis and their results. Furthermore it mentions attributes with the best ability to generally differentiate included songs from rhythmical and metrical aspects. Thesis analyses in the MATLAB language, from the prepared database, all interpretations of the piece "String Quartet No. 1 – IV. Con moto" from Leoš Janáček with two selected methods and shows results of the analysis and comparing of the methods. Finally the work summarizes all information and problems of the thesis.
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Simulator for Passive Multi-Static Radar using WiFi/WiMAX
Sládek, Ondřej ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
This master’s thesis deals with the concept of passive multistatic radar. The radar system exploits WiFi or WiMAX transmitters as the source of radiolocation signal. The transmitters are considered non-cooperative. The master’s thesis evaluates limitations arising from utilization of WiFi or WiMAX signals. A Matlab simulator was created as a part of the thesis, which was used to verify the basic idea behind this concept. Based on the results of real-life simulations, conclusions are suggested towards a possible application of WiFi/WiMAX radar.
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