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Localization system for mobile robot B2
Korytár, Lukáš ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
The master’s thesis implements localization and navigation routines for mobile robot B2 in order to operate autonomously in an environment described by a road map only. The ROS framework was used for developing new software. The research part describes possible approaches to localization problem and summarizes ROS packages with localization and navigation software. The following part includes communication with the robot’s sensor modules and data processing from LIDAR, IMU and camera. The localization package robot_localization based on Kalman filter is implemented and setting of the navigation stack navigation is proposed, aiming to robot’s autonomous outdoor navigation. Implemented functions were tested in park environment and they are evaluated in this master's thesis too.
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Design of 3D joystick with 6DOF
Magyerka, Ladislav ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
The aim of the diploma thesis was to design a complete controller device with six degrees of freedom for use in computer simulators. After the analysis of current available devices, a model of mechanism was created for production using a 3D printer. Subsequently, electronics and utility software were designed to process received sensor readings. Finally, the finished device was tested in several applications.
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Design of docking station for mobile robot
Obšil, Tomáš ; Houfek, Martin (referee) ; Krejsa, Jiří (advisor)
The aim of this diploma thesis is design of docking station for an autonomous mobile robot Breach. The task of docking station is to connect this robotic device to power supply without human intervention in order to charge its batteries. The theoretical part of diploma thesis contains research study about autonomous charging of robots. After that it is assessed suitability of using different types of docking stations and it was chosen optimal solution. The practice part of diploma thesis contains design of docking mechanism, which takes account of inaccurate navigation of robot with deviation of several centimeters. One part of this design deals with connector system, which is dimensioned for long-term transmission of electric current with minimal value of 20 A. At the end of diploma thesis there was created 3D model of the complete docking station including connectors for charging in program called SolidWorks.
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EXPERT SYSTEM SHELL ARCHITECTURE BASED ON DECISION NETWORK
Věchet, Stanislav ; Krejsa, Jiří ; Chen, K.S.
Presented paper deals with preliminary design of an empty expert system suitable for system monitoring in various engineering applications. Discussed expert system is rule-based with the possibility of importance factor definition within each rule. The deduced result can be composited from more than one possible hypothesis based on different confidence level. The core of the system is based on Bayesian decision network and simple autonomous mobile robot use-case is used for results presentation.
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THE EVALUATION OF HOKUYO URG-04LX-UGO1 LASER RANGE FINDER DATA
Krejsa, Jiří ; Věchet, Stanislav
Laser range finders are essential sensors in mobile robot navigation tasks, such as robot localization, or simultaneous localization and mapping. As the probabilistic approach is commonly used to fuse the robot motion model with sensor data, the knowledge of the sensor parameters, such as linearity, variance, etc. is essential for fusing algorithms to perform correctly. This paper presents the results of extensive tests on performance of Hokuyo URG-04LX-UG01 range finder, that becomes nowadays popular among robot designers due to its reasonable cost, compact dimensions and low weight. The influence of obstacle color, error distribution and offset drift are examined.
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Analysis of the ice hockey stadium in Mělník and the proposal of marketing plan
Krejsa, Jiří ; Flemr, Libor (advisor) ; Voráček, Josef (referee)
Title: Analysis of the ice hockey stadium in Mělník and the proposal of marketing plan Objectives: The aim of this work is to elaborate analyzes of the state of the ice hockey stadium in Melnik and to create a proposal of a marketing plan for the stadium. The plan should serve to a more efficient functioning of the entire ice rink in the following years. Methods: The work analyzes years 2011-2013 where it focuses on the utilization of the ice surface, public skating hours and skating schools and analysis revenues and expenditures in the same period. Interviewing visitors, and competitive analysis of stadiums around Melnik were carried out. All values obtained from analyzes were subsequently compared with the national average values obtained from KPMG research. Results: The analyses identified the potential in greater efficiency of utilization of the ice surface and rental of advertising space. When comparing public financing is Melnik's stadium to the national average in the same size cities it turns out that Melnik's stadium is underfunded. The whole proposal of the marketing plan was compiled into 4 main sections aimed at attracting potential sponsors, increased use of ice rinks in the months of September to March, an increase in attendance of public skating and skating schools in the same...
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Electronics circuit board and control software design for autonomous mobile robot
Meindl, Jan ; Krejsa, Jiří (referee) ; Věchet, Stanislav (advisor)
The master's thesis deals with the design and realization of embedded control system and software of the autonomous mobile robot DACEP. The research section focuses on the selection of sensory equipment. Moreover, the design of the embedded control system and the communication interface between this system and the master PC is described in detail, followed by the design of localization and navigation software that uses ROS framework. The section is written as instructive as possible for the development of robots of similar construction. Finally the development of a graphical interface for robot diagnostics and remote control is depicted.
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QR code detection under ROS implemented on the GPU
Hurban, Milan ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
Tato diplomová práce se zabývá vývojem a implementací algoritmu pro detekci QR kódů s integrací do platformy ROS a výpočty běžícími na grafické kartě. Z rešerše současně dostupných nástrojů a technik je vybrán vhodný postup a algoritmus je napsán jako modul v programovacím jazyce Python, který je snadno integrovatelný do ROS. Ke zprostředkování výpočtů na vícejádrovém hardware, jako jsou grafické karty či vícejádrové procesory, je využita knihovna OpenCL.
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Design of an extensible platform for mobile robot
Šumšal, Zdeněk ; Krejčí, Petr (referee) ; Krejsa, Jiří (advisor)
This thesis is about the design of the telescopic platform. which should be fasten on robot called Breach. Purpose of this platform is to carry another equipment like sensors, cameras or manipulator. The platform has to provide chiefly the high demands on load capacity. Another part of the thesis is design of mechanism placed on this telescopic platform, or just on the robot Breach. This mechanism has to load up small subject on the top part of the platform and then unload it on chosen place. Only thing defined for this subjekt is maximal weight of 2 kilograms, but other parameters aren´t specified. Construction is therefore focused on maximal versatility of this mechanism.
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