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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.
171

Výzkumný 3D skener pro účely skenování problematických povrchů / Research 3D scanner for scanning of problematic surfaces

Bátrla, Martin January 2019 (has links)
This diploma thesis deals with design of 3D scanner for scanning problematic surfaces. The research part introduces the problem of 3D scanning and describes causes of random errors. Further, it contains a description and division of methods that leads to their elimination. The practical part of the thesis deals with design and description of hardware and software parts of the 3D scanner. The output of this work is device that is able to implement and compare quality of codification methods mainly for scanning of problematic surfaces. The functionality of equipment was verified by experimental measurement.
172

Automatizovaný tester bezpečnosti chytrých zařízení v energetice / Automated cyber security tester for smart devices in industry

Dávidík, Roland January 2020 (has links)
This diploma thesis explains the principle of SCADA systems and describes the DLMS/COSEM protocol. In the next part, it shortly describes the Modbus protocol and details the pros and cons of the Modbus protocol in comparison with the DLMS/COSEM protocol. In the next part, an open-source automated scanner was created. This scanner detects devices in a laboratory network. As the next step, the automated scanner finds out open ports and active services, which run on these devices, and tries to attack HTTP, SSH, and Telnet services. Next, the program checks, whether the found device is a smart-meter device and if it is compatible with DLMS/COSEM protocol. If yes, it checks, if the service is vulnerable to DOS attack and breaker disconnection. Scanner’s findings are presented in a newly created web application. NMAP, Masscan, and Metasploit open-source programs are used in the automated scanner. The whole automated scanner is optimized for the HW device Raspberry Pi with the operating system Raspbian Buster Lite installed. This work also describes the testing of the scanner on the laboratory environment and the results are evaluated afterwards.
173

Návrh detekce bezpečnostních mezer serverů v rozsáhlé sítí / Design of detection tool for security gaps of servers in wide network

Chudý, Martin January 2020 (has links)
This Master’s thesis deals with proposal of server security gap detection system placed into wide network. On the base of detection system ouput there are rules for scanner data evaluation. After detecting specific security vulnerabilities is created methodology for fixing security gaps onto servers.
174

Vytvoření účelové mapy nádvoří hradu metodou laserového skenování / Creation of a purpose map of the castle courtyard by the laser scanning method

Kučeravý, Peter January 2021 (has links)
This diploma thesis is dealing with creation of thematical map of castle courtyard of the Veveří castle using the method of laser scanning. The thesis describes the construction of a survey net which is important for measuring control points and then scanning of the area using the scanner FARO Focus 3D. The thesis contains a description of the method of laser scanning and point cloud processing in Trimble RealWorks software. Furthermore, this thesis deals with the accuracy of the point cloud and compares the laser scanning method with the typical tachymetric method according to time duration.
175

Laserový proximitní skener - mechanika / Laser Proximity Scanner - Mechanics

Kočí, Martin January 2009 (has links)
This thesis deals with possibility use ordinary optical distance sensor as a 3D laser proximity scanner. The thesis is aimed at design mechanical part of scanner for shifting laser beam in two axes. In the scanner is applied indirect shifting of the beam by a mirror. Next is described test control circuit, which has a controlling of direction of beam shifting and data acquisition for task. The control circuit is based on microcontroller ATmega48 with controlling program. On the end of thesis are shown results of measuring reached with designed scanner.
176

Laserový proximitní skener - elektronika / Laser proximity scanner - Electronics

Padyšák, Zdeněk January 2009 (has links)
In first chapter I introduce with aim of diploma work and in second chapter with principles distance measuring in robotic. After it in next chapter I describe used distance sensor, his principle and characteristics. In fourth chapter I describe control and parts mechanics shoulders. The fifth chapter describes program, which control mechanics shoulders by the 32bits microcontroller Freescale. At last sixth chapter gained data are modified and resulting imagery in 2D and in 3D.
177

Snímání kapiláry pomocí barevného skeneru a hledání významných zón / Scanning capillary column by color scanner and zones recognition

Wojnar, Petr January 2010 (has links)
The master’s thesis focuses on creating an application for scanner control through WIA interface. This aplication is used for reading capillary during electrical separation methods in analytic chemistry. Scanned pictures of capillary are possible to process using online application for detection of significant zones within experiment. Offline detection of a set of scanned pictures is also possible. These applications have been created in LabVIEW environment made by National Instruments.
178

Optický proximitní skener s měřením doby letu / Optical Proximity Sensor with Time-of-Flight Measuring Principle

Mlatecová, Hana January 2011 (has links)
3D optical proximity scanner is described in this thesis. The sensor is marked as 03D201 and is made by Ifm electronic, GmbH company. The text also describes the basic characteristics, measuring principle, PC connection method and communication. A program for communication between PC and sensor was created and named O3D_Application. This program provides functions for real-time data transfer and visualization. Measured data can be saved easily by this program. The thesis also contains an analysis of measured data and parasitic parameters of the sensor.
179

Automatizace měření Zenerových referencí / Meaurement process automatization of Zener reference

Bábek, Tomáš January 2011 (has links)
This thesis deals with metrology specialized to DC voltage. In the begining of thesis is explanation of technical terms from metrology, summarization of units from International System and explanation of the standards and its kinds in the context of metrology. Primary standards of DC voltage based on Zener diodes and Josephson effect are described as well. In cooperation with Czech metrology institute in Brno this work is focused on automatization of measuring Zener reference standards (ZRS). Goal of this project is to automatize the measuring of Zener reference standards and its relationship with Josephson voltage system using scanner. To do this, there is a need to find out offsets, that can develop on scanner's channels. There is a theoretical analysis of measuring made on the scanner and their uncertainties. Aim of the solution is computation of scanner channels offsets using everyday automatic measuring the system of Zener reference standards (ZRS). For measuring the LabView was used and for computing the data from measured values the Matlab was used. This thesis should short the time needed when measuring DC voltage references, measure values of DC voltage standards and set the scanner channels offsets. In the end there is a summarization of offsets measured on individual scanner channels.
180

Výpočet aerodynamiky závodního automobilu / Computation of race car aerodynamics

Vančura, Jan January 2008 (has links)
The main subject of this diploma thesis is computation of race car aerodynamics. It describes composition method of CFD model with utilization of 3D scanner ATOS and CAD software Pro Engineer. During creating this diploma thesis were found influences of additional aerodynamics components of racing car on globally axle loads.

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