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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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Analysis of AHRS unit robustness
Honkyš, Pavel ; Králík, Jan (referee) ; Spáčil, Tomáš (advisor)
This work deals with the measurement of low cost MEMS sensors and their measurement inaccuracy caused by acceleration, this effect is described as G-sensitivity. The aim was to put the test station into operation, to design electronics containing a microcontroller, which sends the measured information to a computer using a wireless module, here to estimate the angle of rotation of the sensor using a suitable algorithm and to design a compensation algorithm to suppress the effect of acceleration. The measured data were processed using Madgwick's algorithm, where the error of the measured angle of rotation occurred during the action of acceleration.
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2D Point-cloud segmentation for curve fitting
Šooš, Marek ; Krejsa, Jiří (referee) ; Králík, Jan (advisor)
The presented diploma thesis deals with the division of points into homogeneous groups. The work provides a broad overview of the current state in this topic and a brief explanation of the main segmentation methods principles. From the analysis of the articles are selected and programmed five algorithms. The work defines the principles of selected algorithms and explains their mathematical models. For each algorithm is also given a code design description. The diploma thesis also contains a cross comparison of segmentation capabilities of individual algorithms on created as well as on measured data. The results of the curves extraction are compared with each other graphically and numerically. At the end of the work is a comparison graph of time dependence on the number of points and the table that includes a mutual comparison of algorithms in specific areas.
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Tracking the movement of objects using a moving camera
Duráníková, Andrea ; Šnajder, Jan (referee) ; Králík, Jan (advisor)
The bachelor thesis deals with software for dynamic cameras with object evaluation. The first theoretical part compares programs for control of the report and data evaluation, as well as the method of motion processing, the possibilities of detecting motion and objects. The practical part implements an algorithm with the function of tracking objects, their resolution into groups and recording tracking using MATLAB.
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Design of watering module for mobile robot
Vizváry, Peter ; Králík, Jan (referee) ; Krejsa, Jiří (advisor)
The diploma thesis is focused on the design of a watering module for a mobile robot. The main goals of this work are to design various concepts of the watering module and their subsequent comparison, ending with the selection of the final concept, which results in its implementation in the form of a prototype with subsequent testing of its properties. The first part of this work is focused on the analysis of the issue and the definition of the assigned task together with the main parameters and requirements. The second part contains an overview of known solutions to the issue and designs for own concepts of the watering module and its individual components. The designs are compared and evaluated in terms of their performance, complexity and price. In the third part, based on the evaluation of the most promising variants, there is a selection of the final concept and after that designing and selection of the final constructional solution. The fourth part is focused on the design and implementation of the prototype, contains the selection and design of the necessary components, module assembly and the creation of the control algorithm of the watering module. The final fifth part contains testing of the functional properties of the prototype, their evaluation and subsequent suggestions for its improvement.
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Autonomous mobile robot motion planning strategy design
Doseděl, Miroslav ; Králík, Jan (referee) ; Věchet, Stanislav (advisor)
This work is concerned with planning the movement of the robot in space and near plants. The main goal is to realize the movement of a robot designed for operation in indoor areas of buildings for watering indoor plants. In the first part of the thesis, existing algorithms for motion planning and obstacle avoidance are presented. In the next part, a search dealing with Framework ROS is written. The individual movements performed by the robot are then described and testing on the real robot is carried out at the end.
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Control system design for small test machine
Rasocha, David ; Králík, Jan (referee) ; Věchet, Stanislav (advisor)
This thesis focuses on design of small testing machine for measuring tensile strength of materials. Appropriate hardware for driving the motor with serial communication will be used. Main drive is a stepper motor with microstepping. Instructions for motor is provided by microcontroler which will be comunicating with aplication in computer. This aplication will have all user functions nessesary for using this device.
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Smart greenhouse control system design
Šindelář, Jiří ; Králík, Jan (referee) ; Věchet, Stanislav (advisor)
This thesis deals with the design of an embedded control system for a smart greenhouse based on commonly available microcontrollers, enabling the automation of greenhouse operation while maintaining minimal costs. The conceptual greenhouse solution includes equipment for process automation, a web application for monitoring current status and statistics, as well as the necessary controls for manual remote control of the actuators. Furthermore, the proposed system supports connection to a parent server which allows remote monitoring and control.
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Imaging system in an aircraft for determining the position of ground objects
Lipták, Samuel ; Krejsa, Jiří (referee) ; Králík, Jan (advisor)
The bachelor thesis deals with the issue of identification of the position of ground signs based on the known position of the aircraft and images taken by the aircraft itself to participate in the international competition of aircraft models New Flying Competition 2022. The bachelor thesis analyzes the conditions of the competition and the resulting possible solutions. In the theoretical part, these options are described from a hardware and software point of view. The solution uses components from RaspberryPi and the MatLab environment for software analysis. Finally, the selected solutions are practically tested on a test aircraft and the photos are subsequently analyzed to confirm the functionality of the system.
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