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Floor detection during elevator ride
Havelka, Martin ; Králík, Jan (referee) ; Krejsa, Jiří (advisor)
This diploma thesis deals with the detection of the current floor during elevator ride. This functionality is necessary for robot to move in multi-floor building. For this task, a fusion of accelerometric data during the ride of the elevator and image data obtained from the information display inside the elevator cabin is used. The research describes the already implemented solutions, data fusion methods and image classification options. Based on this part, suitable approaches for solving the problem were proposed. First, datasets from different types of elevator cabins were obtained. An algorithm for working with data from the accelerometric sensor was developed. A convolutional neural network, which was used to classify image data from displays, was selected and trained. Subsequently, the data fusion method was implemented. The individual parts were tested and evaluated. Based on their evaluation, integration into one functional system was performed. System was successfully verified and tested. Result of detection during the ride in different elevators was 97%.
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Design of conveyor of couplers
Klár, Pavel ; Ripel, Tomáš (referee) ; Krejsa, Jiří (advisor)
This thesis is focused on the design of conveyor of couplers with regard to the requirements for the resolution, and consisting of several parts. The first part outlines the given issue, short research study and an idea of solution. The next part concentrates on the structural design of the whole conveyor. Then the description of the first part of the conveyor including the structural design and the required calculations follow. Finally, other conveyor parts, the budget and the instruction manual are explained. The thesis includes the related drawings and all necessary calculations for other conveyors parts as well.
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Differential chassis mobile robot trajectory planning
Chochel, Michael ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
This work speaks about a suggestion of trajectory of mobile robot with nonholonomic movement limits and differential chassis while passing through a “T“ shaped crossroad. In the theoretical part some methods generally used to solve this task of planning a trajectory of the robot will be explained. In the practical part this task will be solved by an algorithm for searching the optimal trajectory to pass through the crossroad.
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Using ODE for Design of Dynamic Model of a Four-legged Robot
Seriš, Richard ; Krejsa, Jiří (referee) ; Ondroušek, Vít (advisor)
The objective of this bachelor‘s thesis is to design the dynamic model of four-legged robot Qasimodo by using ODE and programming languange Python, based on analysed parameters and known walking gait parameters. Forward dynamic walking gait task is used to comapare behavior of the model with the real robot Qasimodo. Strike a balance and review of ODE usability for this task. This thesis also reviews suitability and complexity of using ODE for dynamic simulation of the walking gaits of the robot.
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Design of electronics and control for touch screen devices tester
Hrůzek, Jan ; Bednařík, Josef (referee) ; Krejsa, Jiří (advisor)
This thesis deals with a complex design of control electronics for device dedicated to testing touch panels and subsequent implementation of basic communication interface between microcontroller and service PC. There is a detailed analysis of selection procedure of suitable sensors for testing device and of suitable components for control and power circuits as well. The connection and interconnection of all necessary components is solved, including the temporary replacement of the main microcontroller with the Nucleo development board. The UART protocol is used as a tool for communication with the operating PC and Python is used on the operating PC side. It also outlines the extension of the content of this thesis when extending the system with a second device.
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Design and implementation of education model "Air levitation"
Horák, Petr ; Krejsa, Jiří (referee) ; Grepl, Robert (advisor)
This work deals with design, processing, animate and setting parameters of education model of air levitation. At the beginning is stated search essay deal with levitation. As the next tehere is a couple of examples of physical model, realization, following describing construction and realization of model. Next step was choise of sensor, actuation and electric supply of this model. Following design of communications unit, electronics and cableway used to connect model with PC control card MF 624. The last step was design real-time control system via program Matlab Simulink 2007b using Real Time Toolbox 4.0 made by Humusoft, realization of this system and its settings
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SW development and testing for engine monitoring module
Sumtsov, Artem ; Sova, Václav (referee) ; Krejsa, Jiří (advisor)
Diplomová práce popisuje vývojovou techniku Model Based Design a její použití pro návrh a testování algoritmů. Popis této techniky je proveden na příkladu praktického využití v praxi při vývoji modulu monitorování stavu motoru ve spolupráci se společností UNIS,a.s. Vývoj v oblasti současné letecké techniky klade velký důraz na monitorování životnosti zařízení. Podle výstupů algoritmu se dají naplánovat preventivní opravy s ohledem na aktuální podmínky opotřebení a provozování. Implementace algoritmů je provedena v prostředí Matlab/Simulink s následným testováním na platformě dSpace
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