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Automatic reading of numbers - real-time measurement of quantities from graphical displays of various instruments with a camera
Bartoš, Daniel ; Králík, Jan (referee) ; Appel, Martin (advisor)
This bachelor thesis deals with the process of converting numerical values displayed on graphical displays of measuring instruments without communication interfaces into data usable for subsequent analysis, using a camera and a program described in the implemen- tation section. The theoretical part is dedicated to the research and implementation of operations used in image processing, including morphological operations, in the MATLAB environment. The practical part of the thesis focuses on creating a program for real-time recording of numerical displays using a camera, processing the captured images with operations discussed in the research section, and reading them using the MATLAB OCR function. It also covers the subsequent processing of the read data and their storage during the measurement. This part also includes examples of measuring different types of displays, creating a user interface and application using the Application Compiler tool. The thesis concludes with a section serving as a user guide for the application.
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Modern vibrodiagnostics of machines and evaluation of datasets by neural networks
Koníček, Tomáš ; Holoubek, Tomáš (referee) ; Hammer, Miloš (advisor)
This Master‘s thesis focuses on technical diagnostics with an emphasis on vibrodiagnostics of machines and equipment. The aim is to carry out research on vibration monitoring using modern on-line systems and to investigate the possibilities of processing the acquired data files using neural networks. Vibration monitoring from Siemens SIPLUS CMS is analyzed, including a description of individual hardware and software components. The work also focuses on machine diagnostics using a real model equipped with the SIPLUS CMS system in cooperation with the SIMATIC S7-1200 programmable automaton. The obtained data will be transferred via the FTP protocol for further processing in the Matlab program. Neural network models will be designed and used, which will be trained on the measured data. Convolutional neural network model will be used. The results will be evaluated and a conclusion will be drawn.
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Low-frequency electronically adjustable active load
Vaněk, Petr ; Theumer, Radek (referee) ; Šotner, Roman (advisor)
SBachelor thesis deals with the design of an active electronic load for DC and AC input signals. The PSpice simulations are used for verification of mentioned modes of the electronic load operation and the principles of their functions. The main content of this work is the design of low frequency active electronic load, design of control performance and verification by it‘s simulation, preparation of production documents, completion of prototype and experimental verification.
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Application of the Sinumerik ONE control system in machining and measuring
Romanov, Dmitrij ; Potanko, Andrej (referee) ; Polzer, Aleš (advisor)
This diploma thesis deals with the application of the CNC control system Sinumerik ONE within the programming of machining and measurement. The first part of the thesis contains a research related to the addressed issues of this diploma thesis. The next part involves the design of experimental parts for which NC programs for machining and measurement were to be implemented. The design of the parts is based on the CNC five-axis milling machine SLV EDU. The thesis includes a description of the machine itself and the selection of workpiece material, tools, and cutting conditions. Methods of how the designed parts could be machined are also described. The following section provides an analysis of the developed NC programs for machining and measuring of the given parts, including examples from graphic simulations. Programming in the Sinumerik ONE environment was possible using the Run MyVirtual Machine software, version 1.3.2. The thesis further mentions how measurement results can be evaluated. The last part of the thesis consists of an assessment of its results and recommendations for practical application.
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Usability of Post-quantum Cryptography in IoT
Kratochvíl, Jakub ; Perešíni, Martin (referee) ; Malinka, Kamil (advisor)
Cílem této práce je zjistit použitelnost postkvantových kryptografických algoritmů a jejich nároků na zdroje na zařízeních s omezeným výkonem. Pro vyhodnocení použitelnosti jednotlivých algoritmů jsou měřeny obecné parametry na zařízení ESP32 s čipem Xtensa LX6. Druhá část této práce se zaměřuje na velikost síťové komunikace protokolu TLS 1.3, který využívá postkvantové alternativy. Obě tyto části obsahují srovnání se současnými kryptografickými algoritmy. Výsledky v obou částech měření ukazují především zvýšení nároků na zdroje pro postkvantové algoritmy. Postkvantová kryptografie je v současné době použitelná na zařízeních podobných ESP32, ale na zařízeních s nižšími zdroji je problematická nebo dokonce nepoužitelná.
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Motorcycle wheel force transducer
Krišpín, Jakub ; Drápal, Lubomír (referee) ; Tobiáš, Martin (advisor)
This thesis deals with the design of a driven motorcycle measuring wheel. The wheel is designed for a KTM RC 390 motorcycle but can be used on another motorcycle if the centre section is replaced. The wheel is designed to measure torque and longitudinal and vertical force, which is very useful for analysing the dynamics of the motorcycle. The measurement systems designed to measure the forces and moments on the wheels of the vehicles are introduced in the beginning of this thesis. Furthermore, the wheel design for the selected motorcycle is presented including the optimization of the wheel spoke shape. The optimized shape creates a region of homogeneous stress where strain gauges are installed to measure torque. Subsequently, structural analysis is performed in Ansys software using FEM. It verifies the structure in terms of strength. Then suitable strain gauges are selected and their wiring is designed. The proposed measuring wheel should serve as an alternative to commercially available measuring systems which are very expensive. The material cost of the presented wheel is approximately 78 thousand CZK.
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Design of a compact system for measurement of the indoor environment
Jančík, Josef ; Klimeš, Lubomír (referee) ; Pech, Ondřej (advisor)
The diploma thesis deals with a design of a compact air quality measuring device. Theoretical part of the thesis introduces the reader with air quality measuring, measuring criteria and basic principles of measuring. Next part is dedicated to the design of the device – component selection, model creation and simulation of heat transfer between individual components. This parts also describes the connection between multiple devices and data collection. The following part presents practical testing of the device and the possibilities of its calibration. At the end of the thesis, the final device is evaluated in the terms of function and costliness.
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