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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).
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Local Navigation of an Autonomous Mobile Robot
Herman, David ; Rozman, Jaroslav (referee) ; Orság, Filip (advisor)
This paper deals with the topic of design of a navigation system for an autonomous mobile robot in a park-like environment. Precisely, designing methods for road detection using available sensoric system, designing a mathematical model for fusion of these data, and suggesting a representation of an environment suitable for planning and local navigation.
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Altitude Control of Quadrotor UAV
Hamáček, Vojtěch ; Chromý, Adam (referee) ; Gábrlík, Petr (advisor)
The aim of the bachelor thesis is to design and implement remote control and stabilization of altitude of own quadrotor. The work is first focused to realization of the quadrotor remote control. Subsequently, a brief summary of flight height sensors and possible ways to evaluate them. The practical implementation of the altitude evaluation is presented, followed by a brief summary of the possibilities of stabilization of the altitude and the implementation of the real controller, followed by real testing. The conclusion of the thesis contains a summary of the problem solved and the results achieved in real test.
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Sensor fusion for detecting and locating people in a room
Vondráček, Jakub ; Dobossy, Barnabás (referee) ; Najman, Jan (advisor)
This diploma thesis deals with the problem of fusion of several sensors for the purpose of detecting and locating people in a room. It is primarily about using measured sensors and implementing them in such a way that their connection creates a system that has obvious advantages compared to more expensive single sensor solutions. In the first part of the work, research is carried out, which presents the basic issues of detection, localization and counting of people in rooms. To be used in the practical part of the work, it is also indicated here which specific sensors can be used to achieve these functions and which control units are suitable for such a system. Finally, it summarizes specific components and software tools, which are further supplemented in the practical part of the work. The rationale for this selection is also included. The second part of the thesis describes the specific design of the resulting system, which can perform the functions of detection, localization and counting of people in the room. This practical proposal is described including all starting points, connections and especially the algorithm that was used for sensor fusion. The entire system is subsequently tested, based on which its functioning is evaluated. In the last section of the thesis, the created system is supplemented with a model of a cover and wall mount.
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Overview Of Approaches To Multisensor Fusion As Used In Adas And Av
Zemčík, Tomáš
This paper briefly summarises the state-of-the-art in the field of approaches to heterogeneous multisensory fusion as in use in autonomous vehicles and advanced driver assistance systems (ADAS). It first describes the basic perception principles, goes over the used sensors and their properties. Various approaches to sensor fusion are then explained with particular focus on their effects on road traffic safety. Conclusions suggest the most perspective approaches and possible improvements.
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Altitude Control of Quadrotor UAV
Hamáček, Vojtěch ; Chromý, Adam (referee) ; Gábrlík, Petr (advisor)
The aim of the bachelor thesis is to design and implement remote control and stabilization of altitude of own quadrotor. The work is first focused to realization of the quadrotor remote control. Subsequently, a brief summary of flight height sensors and possible ways to evaluate them. The practical implementation of the altitude evaluation is presented, followed by a brief summary of the possibilities of stabilization of the altitude and the implementation of the real controller, followed by real testing. The conclusion of the thesis contains a summary of the problem solved and the results achieved in real test.
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Tracking of 3D Movement
Matzner, Filip ; Barták, Roman (advisor) ; Obdržálek, David (referee)
In this thesis, we propose and evaluate a method for tracking short-term move- ment and orientation of a device using only its on-board sensors - accelerometer, gyroscope and magnetometer. A straightforward method of motion tracking is described from the theoretical perspective and afterwards transformed into a practical algorithm. To improve its performance, we enhance the method with a stabilization system, which corrects the bias caused by sensor inaccuracies every time the device stands still. The effectiveness of the proposed method and the merits of the enhancement are evaluated in several experiments with two mo- bile devices. Furthermore, a complete software solution is included, which allows experimentation with smartphone sensors in a user friendly interface. 1
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Local Navigation of an Autonomous Mobile Robot
Herman, David ; Rozman, Jaroslav (referee) ; Orság, Filip (advisor)
This paper deals with the topic of design of a navigation system for an autonomous mobile robot in a park-like environment. Precisely, designing methods for road detection using available sensoric system, designing a mathematical model for fusion of these data, and suggesting a representation of an environment suitable for planning and local navigation.
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