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Enhancing Localization Accuracy in Industrial Wearables with LoRaWAN
Svertoka, Ekaterina ; Martian, Alexandru (referee) ; Digulescu-Popescu,, Angela (referee) ; Lohan, Elena Simona (referee) ; Hošek,, Jiří (referee) ; Burget, Radim (advisor)
Tento výzkum kombinuje teoretické poznatky, simulační studie a praktické experimenty s cílem prozkoumat oblast průmyslových nositelných zařízení se zaměřením na zvýšení přesnosti jejich lokalizace pomocí technologie LoRaWAN. Práce vedla k vytvoření dvou klasifikací funkcí a metrik průmyslových nositelných zařízení a 7 volně přístupných datových sad LoRaWAN v různých prostředích (vnitřních, venkovních a podzemních). Kromě toho práce provádí komplexní posouzení přesnosti lokalizace pomocí více přístupů, analyzuje vliv proměnných z měřicí kampaně a technik zpracování dat. Dále navrhuje úpravy algoritmu k-NN, které spolu s metodami předzpracování vedou ke zvýšení přesnosti o 17,2 % ve srovnání s původním benchmarkem. Navržené algoritmy, ověřené na souborech dat LoRaWAN, nabízejí potenciální využití v různých oblastech. Studie uzavírá validaci lokalizace na bázi LoRaWAN s přesností 2,6 m v interiéru a 4 m v exteriéru, což naznačuje, že ačkoli lokalizace na bázi LoRaWAN není tak přesná jako u předních technologií, lze ji využít v odvětvích, jako je logistika, zemědělství a inteligentní výroba, kde není absolutní přesnost nezbytná.
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Selecting Objects in Augmented Reality
Pribylina, Martin ; Materna, Zdeněk (referee) ; Kapinus, Michal (advisor)
This work proposes and tests methods for object selection in augmented reality. The work focuses on selecting objects that overlap with each other in densely populated clusters. The proposed selection methods are direct selection, cursor, and list. As part of the work, an application has been developed that allows testing of the three methods and measures accuracy, time, motion and other criteria for a thorough evaluation of their applicability. The application was implemented using Unity and ARCore. A user study with 16 respondents was conducted using the test application. The results of the work show the advantages and disadvantages of each selection.
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InSpec Software Programming for SOL311 Optical CMM
Kellerová, Michaela ; Jankových, Róbert (referee) ; Polzer, Aleš (advisor)
This diploma thesis is devoted to the issue of programming in the InSpec software and the evaluation of the achieved measurement results. The theoretical part is devoted to the current state in the area of coordinate measuring machines and the system area focused on the influences acting on user programming. The practical part is devoted to the design of devices intended for measurement and assessment of the achieved measurement results.
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Neural Network Based Edge Detection
Janda, Miloš ; Žák, Pavel (referee) ; Švub, Miroslav (advisor)
Aim of this thesis is description of neural network based edge detection methods that are substitute for classic methods of detection using edge operators. First chapters generally discussed the issues of image processing, edge detection and neural networks. The objective of the main part is to show process of generating synthetic images, extracting training datasets and discussing variants of suitable topologies of neural networks for purpose of edge detection. The last part of the thesis is dedicated to evaluating and measuring accuracy values of neural network.
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State of the art speech features used during the Parkinson disease diagnosis
Bílý, Ondřej ; Smékal, Zdeněk (referee) ; Mekyska, Jiří (advisor)
This work deals with the diagnosis of Parkinson's disease by analyzing the speech signal. At the beginning of this work there is described speech signal production. The following is a description of the speech signal analysis, its preparation and subsequent feature extraction. Next there is described Parkinson's disease and change of the speech signal by this disability. The following describes the symptoms, which are used for the diagnosis of Parkinson's disease (FCR, VSA, VOT, etc.). Another part of the work deals with the selection and reduction symptoms using the learning algorithms (SVM, ANN, k-NN) and their subsequent evaluation. In the last part of the thesis is described a program to count symptoms. Further is described selection and the end evaluated all the result.
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Comparison of measurement accuracy of optical and 3D kinematic system
Surkoš, Ondřej ; Adamík, Richard (referee) ; Kundera, Václav (advisor)
The bachelor thesis deals with the comparison of the accuracy of two instruments for measuring the vertical jump, using a different measuring principle, namely "Optojump next" and "BTS Smart DX". In the theoretical part, the individual devices are discussed, on what principle they work and are compared with each other. In the practical part we deal with the methodology, processing of measured data and evaluation of the results of measurements.
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Production of handrail holder
Ryšavý, Jan ; Varjan, Matúš (referee) ; Peterková, Eva (advisor)
Economic and technological analysis of possible methods of production real part. The basic theoretical knowledge of selected production methods and their application in practice. The division of production methods for various production series of part using economic evaluation.
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Evaluation of control processes
Šimák, Martin ; Koška, Petr (referee) ; Pernikář, Jiří (advisor)
This bachelor thesis studies the theory of evaluation of control processes. The first part of the thesis discusses about organization of national legislation and metrology legislation. The next part of the study focuses on metrology terms, theory introduction to measurement uncertainty and their expression. The final section of the thesis is devoted to statistic evaluation of processes.
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