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Design of control unit for an autonomous vehicle
Vobruba, Martin ; Formánek, Martin (referee) ; Adámek, Roman (advisor)
The topic of this bachelor thesis is designing control unit for an autonomous vehicle. The new ECU replaces the old one which was without access to the source code, so its functionality couldn’t be modified. The purpose of the ECU is to receive a message from the control computer, process it, control the actuators according to the orders and inform the computer about their current state. The first part of the thesis is research of the vehicle kinematics and CAN bus. The practical part focuses on the analysis of the previous ECU which is crucial to its replacement. It is followed by the firmware and hardware design. The last practical part of the thesis is the testing of the new ECU’s functionality.
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System for Support of Short-Term Car Rentals Based on Carsharing
Vrtal, Petr ; Bidlo, Michal (referee) ; Šimek, Václav (advisor)
The aim of this thesis is to create a system for the transformation of an ordinary passenger car into a vehicle capable of sharing in the form of short-term loans. Vehicle rentals are completely unattended, which was achieved by implementing service applications in the form of an administration and user tool. The administrative application was created using web technologies, primarily Next.js and React. The customer application was implemented with the goal of high portability, and therefore its development was directed to mobile platforms using the React Native framework and the Expo tool. The vehicle is equipped with its own designed IoT end device in the form of a printed circuit board, capable of permanent wireless connection to the network based on LTE-M technology and MQTT protocol. The purpose of this device is to provide current vehicle data obtained by reading communication on the CAN bus, connecting to a standard OBD-II diagnostic port. An important part of the work was the execution of a series of tests of all sub-aspects of the implemented architecture, focusing mainly on reliability, resulting functionality and user-friendliness. The resulting system was tested in real operation and represents a way of non-invasively transforming a regular passenger car into a car capable of sharing.
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Autonomous system for control of aquarium
Charvot, Jakub ; Levek, Vladimír (referee) ; Tomíček, Pavel (advisor)
This thesis delves into the topic of aquarium automation, aiming to design custom system for this purpose. The essential technology requirements for efficient aquarium operation are summarized at the beggining followed by the market survey with depiction of existing commercial solutions in the field of automation. Regarding the practical part, the thesis explain the design process of the device and takes a deeper look at its crutial steps. System architecture is disccused as well as the creation of electrical schematics, and the design of custom printed circuit boards. The final part of the text is dedicated to the software. The outcome of the thesis is a modular system consisting of a control unit and several connected peripherals managing specific sensors and actuators. The entire system can be configured remotely via a web application.
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Triggering device for CANbus
Piroch, Vojtěch ; Arm, Jakub (referee) ; Burian, František (advisor)
This bachelor thesis deals with the design of a triggering device for the CAN bus that allows connection to the trigger input of an oscilloscope and display of the signal waveforms of the CAN bus frames. The first part of the thesis deals with the theoretical description of the CAN bus itself, its principle of operation, description of frames, etc. The second part of the thesis deals with the selection of the core components needed for the circuit, the design of the final schematic, the definition and calculation of the individual components in the circuit and the method of control. The third part is practical, it is dealing with testing the prototype device, designing the circuit board and packaging for the device. The following section describes the software part of the device, specifically how to control the device, a description of the program and libraries used in programming the microcontroller. The last section describes the final testing and measurement of parameters such as jitter and trigger pulse delay.
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Electronic speed controller
Šimbera, Michal ; Kučera, Pavel (referee) ; Svída, David (advisor)
The thesis deals with the design, realisation and functional verification of an electronic cruise control unit. Required inputs, outputs and controller of the control unit are identified first. The design and layout of the electronical components, including the processor, power supply and other necessary hardware is discussed. The algorithm for the control unit is developed in C/C++ and thoroughly analysed. The functionality of the cruise control unit equipped with the algorithm is verified through a case study performed on a combustion engine.
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Home automizing system
Papoušek, Marek ; Bohrn, Marek (referee) ; Pavlík, Michal (advisor)
The work deals with a design and realization of the comprehensive system of home automation. Individual elements of the system communicate utilizing CAN bus. Home automation system should provide lighting, heating and security management. The system should be controlled by tablets with android operating system utilizing developed control software. Microcomputer Raspberry Pi is used to control the automation system.
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Active aerodynamic components of road vehicles
Stiborová, Dana ; Hejtmánek, Petr (referee) ; Vančura, Jan (advisor)
In this diploma thesis active aerodynamic components are designed, specifically brake cooling duct and active automotive wing. Cooling duct prototype and also active regulation controlling electronics including the software were created. Road test was performed to measure the duct parameters. Construction design and the active regulation function of the automotive wing were created. The influence of the wing on aerodynamic characteristics of the car was determined.
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Experimental workplace for research of car speed limiters
Kubát, Michal ; Možný, Radek (referee) ; Pokorný, Jiří (advisor)
The bachelor’s thesis deals with the issue of remote vehicle speed limitation. The aim of this work is to develop an experimental workplace where the speed limitation using connection to CAN bus will be tested. In the theoretical part, a research on existing solutions of speed limiters is conducted and their protocols and technologies are described. The theoretical part also includes a research and description of possible threats and attacks on technology ITS-G5. The practical part deals with the development of the experimental workplace that consists of an OBD-II simulator and a transmitter. The OBD-II simulator includes Arduino UNO and add-on modules, its communication is realised via CAN bus. Transmitter includes Arduino NANO. Then, a wireless communication between a transmitter and an OBD-II simulator on 433 MHz and the wireless speed adjustments are developed. Finally, the IVIM message is designed and implemented for car speed limitation. Its structure was selected according to ISO standards for communication in ITS-G5 technology. The implementation of this message was tested on an OBD-II simulator. On the whole, a complete experimental workplace was assembled, and its manual was created.
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Positional Motion Control by means of 8bit uP
Janda, Petr ; Holý, Miroslav (referee) ; Matoušek, Radomil (advisor)
This thesis deals with positional control of DC motor Icla D065 of company SIG Positec Automation GmbH with aid of CAN-Bus and CANopen protocol. Individual parts describe general principle and standards of CAN-Bus and international normalized higher-level protocol CANopen for systems control. For control this motor was used microcontroller PIC18F4685 from company Microchip and developmental environment MPLAB® IDE. With used C language was made program for MCU control communication with a motor by support of CANopen protocol and its motion control. The result of this thesis will be used in solution of research project Intelligent Systems in Automation.
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Real-Time Operating System with Fixed Task Priority for Raspberry Pi
Kolář, Josef ; Peringer, Petr (referee) ; Janoušek, Vladimír (advisor)
The main goal of this work is to create a support for an open-source real-time operating system on the computer Raspberry Pi 3B+. The project FreeRTOS is selected as a great candidate for further work. The runtime environment and support for user-space applications are presented. Two demonstration applications serve as proofs of support, the first one uses two periodic tasks and reports their state to the serial interface. The second demonstration application runds the same periodic tasks, but reporting the state is done using the CAN bus, for which is the driver realised. The result of this thesis is a working system FreeRTOS for Raspberry Pi 3B+ computer with support for time-critical usages.
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