|
|
Energy data monitoring in electric vehicle
Krejz, Jan ; Dedek,, Jan (referee) ; Baxant, Petr (advisor)
The thesis deals with the monitoring of the energy data in an electric vehicle using modern diagnostics, using data readings from the CAN bus. The thesis can be divided into three parts. The first part provides a theoretical introduction to the measurement systems found in electric vehicles, then there are the methods of data transmission within the electric vehicle and the possibilities of how to obtain this data. The second part is an overview energy model that theoretically describes the possible flows of electrical energy within an electric vehicle, this theory is then supported by models in Simulink software for specific situations and tests where the theoretically calculated values of energy consumed were verified using this model. and the measured values. In the last section, a proposal for tests and locations where it would be appropriate to monitor these flows is presented. Some of the tests were performed and then evaluated.
|
|
|
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.
|
|
|
Possibilities of data analysis from CAN bus
Krišková, Mahulena ; Pančík, Juraj (referee) ; Belák, Michal (advisor)
This Master’s thesis covers possibilities of data collection and data analysis from CAN. Historical background and current trends are described as well as the principle of operation. The aim of this thesis was to provide several methods of data reading and subsequently their possible ways of interpretation for purposes of Forensic Engineering, more precisely, in the terms of vehicle driving dynamics. Owing to the fact the messages on the CAN bus are themselves encoded, one is unable to read them without further decryption. However, the possibilities of decoding are limited. Individual methods of data reading, collection, and analysis are presented. The analysis is focused on the process of data collection form CAN bus and data decryption. From several software options, one was selected as a tool for experimental part.
|
|
|
Modular control system
Novotný, Jan ; Fiedler, Petr (referee) ; Benešl, Tomáš (advisor)
The work deals with design of electronics for modular control system and all the necessary attributes. In the general part the reader are acquaints with the issues of industrial control systems and describes their functionality. It also describes the communication buses and protocols used in the industrial data transmission and describes real-time operating systems (RTOS). In the practical part, the master thesis deals with the design of its own modular control system consisting of several modules. The modular control system uses its own communication protocol to exchange data between the individual modules. Various possibilities of using this modular control system are discussed.
|
|
|
Remote Monitoring of Selected Vehicle Subsystems
Drahovský, Peter ; Peringer, Petr (referee) ; Janoušek, Vladimír (advisor)
This thesis describes the concept and realization of embedded system and cloud application, which is designed for remote monitoring of car subsystems over CAN bus. There are written several ways of getting information from car subsystems and process of decoding messages sent over internal car bus. Data gathering is realised by device based on ESP32, which is sending them to cloud application using wireless networks. Application UI is adapted for mobile devices and serves views containg current and historical gathered data.
|
|
|
Data buses in the automotive industry
Plíšek, Marek ; Míša, Jiří (referee) ; Zháňal, Lubor (advisor)
The topic of the bachelor thesis is data buses in cars. The aim of the work is to describe data buses and compare their key properties and functional parameters. Sources for bus comparison are drawn from domestic and foreign sources. The work brings a complete comparison of all commonly used data buses: CAN, LIN, FlexRay, MOST, Ethernet. The output of the analysis is a clear table of properties and parameters of buses with a description of their advantages and disadvantages. The work is supplemented by a reflection on the future development of communication systems in cars.
|
|
|
Diagnostic module for Single-Wire CAN bus
Jež, Michal ; Doseděl, Martin (referee) ; Havránek, Zdeněk (advisor)
The basic properties of the CAN bus are analyzed in the bachelor's thesis. Furthermore, this work deals with the availability of circuits for the implementation of the CAN bus and the physical layer Single Wire CAN. Subsequently, the design of the diagnostic unit for the CAN bus is processed. It also deals with the design of firmware for the diagnostic module and a PC program for subsequent data analysis. Finally, the compatibility of the Single Wire CAN bus with the Low Speed CAN bus is tested.
|
|
|
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.
|
|
|
Methodology for fault tolerant system state synchronization design and its recovery from faults
Szurman, Karel ; Fišer, Petr (referee) ; Racek, Stanislav (referee) ; Vlček, Karel (referee) ; Kotásek, Zdeněk (advisor)
In this Ph.D. thesis, a new methodology for the fault tolerant system state synchronization design and its recovery from faults is presented. A state synchronization method designed by means of the proposed methodology allows to repair the state of sequential logic elements implemented in the FPGA application logic, which cannot be repaired by the partial dynamic reconfiguration. The proposed methodology describes possible state synchronization design methods with respect to TMR granularity, dependence of the system function on its previous states and the system architecture. The methodology focuses on coarse-grained TMR architectures and state synchronization in the systems controlled by means of finite state machines or a processor. The use of the methodology is demonstrated on the CAN bus control system and the microcontroller NEO430, for which specific synchronization methods were designed. The systems reliability and new ability of the systems for recovery from faults were verified in the presence of simulated SEU faults. The experimental results and the contribution of this thesis are discussed in the conclusion.
|
|
|
Embedded Control Unit for Instrumentation of Laboratory Appliance
Voda, Zbyšek ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
Aim of this thesis is modular design of control system for Golem device, which is used for drug research. Several modules with specified controlled area were designed. They communicate using CAN bus and are controlled by Raspberry Pi computer. The thesis includes PCB design and control firmware for modules, backend application for Raspberry Pi, which provides application interface, and simple protocol used for communication between modules. Designed system was tested in simulated environment.
|
guest ::
