|
|
Ekonomické zhodnocení využívání naváděcích technologií v zemědělství
Sova, Marek
The bachelor thesis deals with precision farming technologies, more precisely with guidance systems. Nowadays, their use is more and more frequent not only in large enterprises, but also in small farmers. Many farmers use it because of its economic but also environmental effects. Nowadays, navigation systems are able to work with an accuracy of up to 2 centimetres. Each farmer can choose the method of movement in the field and set the optimal line of movement of the machine on the land. The practical part of the thesis is devoted to the use of guidance technologies in the agricultural enterprise AGROSERVIS Višňové. From the data available from the agricultural system, an economic evaluation by model calculation was created. From the results it was found that by using navigation the enterprise is able to save on average up to 1 134 CZK.ha. Other benefits are expected by implementation of variable rate technology, which more and more farms are adopting.
|
|
|
Využití elektronických systémů v řízení techniky pro pěstování rostlin
Nosek, Matěj
The main focus of the bachelor‘s thesis Utilization of Electronic Systems in Technology Controls for the Cultivation of Crops is the analysis of selected integrated systems that control the details of machines up to complete automation. It deals with precision agriculture, new trends, and transport for crop production. The thesis consists of three research chapters. The first two of them, Literary review and Electronic systems in various machines, serve as a theoretical basis of this thesis and shed light on a general evaluation of the issues of not only the hardware of electronic systems but also software. They describe the examples of some of the most commonly used systems in specific brands, such as CLAAS, New Holland, John Deere, and CASE IH. The chapter Summary and discussion describes the differences between the individual systems and especially shows their advantages and disadvantages. The conclusion summarizes the knowledge achieved during processing the thesis.
|
|
|
Navigation of UAV in GNSS denied area
Pintér, Marco ; Marcoň, Petr
This paper examines the concept of navigation of of Unmanned aerial vehicle (UAV) in three-dimensional space using visual odometry. In the near future navigation of the UAV without GNSS is becoming a critical part of autonomous navigation systems, using information from on-board cameras to estimate the UAV’s movement and position. In the paper, different types of visual odometry, sensors for visual odometry, components of the implementation, and scenarios of usage. For the development and future application we utilize widely used Robotic Operating System (ROS).
|
|
|
Information System for Organizers of Sailing Races
Vaňo, Peter ; Burget, Radek (referee) ; Bartík, Vladimír (advisor)
The aim of this thesis is to create an information system for organizers of sailboat races. The system is created as a web application with PWA in Java and TypeScript using the Spring and Angular frameworks. The main function of the system is the management of races and the registration of participants. The system also includes support for placing the race course and navigation to buoys afterward. During the work, importance was placed on expandability, reuse, and simplicity.
|
|
|
Design and implementation of an obstacle avoidance method in an outdoor environment for a mobile robot
Fargač, Tomáš ; Králík, Jan (referee) ; Věchet, Stanislav (advisor)
This thesis focuses on investigating the usability of the optical flow method in image processing. Firstly, this method is introduced theoretically, followed by its mathematical derivation. Subsequently, the idea of implementing it into decision-making algorithms and potential areas of application is presented. The thesis also elaborates on suitable environments for such applications in both virtual and real worlds. The practical part demonstrates the step-by-step development process and the refinement of working with this method and its outputs. The work utilizes the Matlab programming environment and detailed work at the level of individual components in this programming language, enriched with auxiliary toolboxes, especially from the field of computer vision. The entire research is summarized clearly at the end, and all undertaken steps are depicted in a flowchart. Finally, all explored approaches with their strengths and weaknesses, identified throughout the process, are clearly presented.
|
|
| |
|
|
Real-time propojení senzorů pro navigaci
Kaczmarek, Adrian ; Rohm, Witold ; Klingbeil, Lasse ; Tchórzewski, Janusz
The development of satellite techniques in the field of precise positioning and the availability of mobile devices with a built-in multi-GNSS (Global Navigation Satellite System) receiver allow us to determine positions with better accuracy than a dozen or so years ago. At the same time, there is a growing demand from users for more and more accurate positioning while reducing the costs of the final device (e.g., a navigation system for autonomous lawn mowers). This work presents the concept of a solution that integrates different positioning techniques: gyroscopes, odometers, and GNSS using a loosely coupled Kalman filter. The sensor integration model was developed for horizontal components (2D) with simultaneous determination of azimuth and precise position. Additionally, the integration filter uses a dynamic weight matrix, the values of which are selected depending on the type of GNSS solution (FIX, FLOAT, etc.). Tests of the measurement platform were carried out under ideal conditions and in places where the horizon is obscured (passes along a high wall, under openwork steel trusses, etc.). The accuracies obtained during tests using EKF and the dynamic weight matrix are RMS 0.019 m for the North and East components. However, the accuracy of the azimuth determination was 0.59°. In addition, the presentation will present a platform concept that integrates low-cost sensors in real time.
This work was supported by Wroclaw University of Environmental and Life Sciences (Poland) under the project “POMOST” (grant no. N110/0002/22).
|
|
|
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.
|
|
|
Advanced Navigation in Heterogeneous Multi-robot Systems in Outdoor Environment
Jílek, Tomáš ; Duchoň,, František (referee) ; Mazal, Jan (referee) ; Žalud, Luděk (advisor)
The doctoral thesis discusses current options for the navigation of unmanned ground vehicles with a focus on achieving high absolute compliance of the required motion trajectory and the obtained one. The current possibilities of key self-localization methods, such as global satellite navigation systems, inertial navigation systems, and odometry, are analyzed. The description of the navigation method, which allows achieving a centimeter-level accuracy of the required trajectory tracking with the above mentioned self-localization methods, forms the core of the thesis. The new navigation method was designed with regard to its very simple parameterization, respecting the limitations of the used robot drive configuration. Thus, after an appropriate parametrization of the navigation method, it can be applied to any drive configuration. The concept of the navigation method allows integrating and using more self-localization systems and external navigation methods simultaneously. This increases the overall robustness of the whole process of the mobile robot navigation. The thesis also deals with the solution of cooperative convoying heterogeneous mobile robots. The proposed algorithms were validated under real outdoor conditions in three different experiments.
|
|
|
Development of electronic parking system
Šmíd, Josef ; Strecker, Zbyněk (referee) ; Paloušek, David (advisor)
This bachelor thesis deals with the development of the electronic parking system, which is intended to navigate the drivers to the nearest vacancies, using the Arduino platform. The introductory part deals with an overview of the current state of knowledge. The research section provides an overview of the Arduino base plates and other modules and sensors selected for conceptual design solutions. The construction part deals with the design of the casing according to the selected components and the subsequent realization of the whole device, including the program, for testing under real conditions. The test results are finally evaluated and summarized in the final discussion.
|
guest ::
