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An Ethernet-CAN controller for mobile robots
Uherka, Bohumil ; Florián, Tomáš (referee) ; Burian, František (advisor)
The diploma thesis deals with creating the Ethernet converter protocol UDP of the CAN bus with the used application layer CANopen. The converter is executed by means of the microcontroller ARM Cortex-M3, namely by STM32F107VC by STMicroelectronics. The project is designed for the purpose of serving as the main motor controlling card of the mobile advertising robot FektBot. In the theoretical part you can find a brief analysis of the ARM microcotrollers problematics, particularly the STM32F107VC. Then the thesis introduces the Ethernet technology including the UDP protocol. Finally, the CAN bus and its application layer CANopen is described. The practical part shows first of all the scheme of converter hardware. You can find there the design of printed circuits including all components for proper functioning, i.e. especially the microcontroller STM32F107VC, Ethernet PHY, the CAN bus transceiver and switched stabilized supply. Next chapter describes software creating for the given converter. Firstly there are analyzed possible ways of STM32F107VC programming, and then there is the main conception of resolving the programming part shown. The thesis then deals with the concrete implementation of the UDP Ethernet protocol. For that, the lwIP stack is used, over which the application layer of the FektBot robot works. Then there is analyzed the implementation of the CAN bus and CANopen. At the end of the practical part, the final execution of the converter software and the ways of its testing are described.
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Recoil forces measurement after shotaVibration Test Stand
Rozum, Stanislav ; Kubinec,, Peter (referee) ; Frýza, Tomáš (advisor)
The thesis describes design and construction of vibration generator driver. The device is controlled via standard Ethernet interface and allows user to change parameters of generated function in PC application which reads and evaluates frequency and amplitude from real-time measured data while the test is running. In the introduction, vibration tests and choice of generators and power amplifiers are described. Next part is focused on every aspect of the hardware design. Last two chapters implement firmware for all three microcontrollers and software for PC application.
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Automated Testing of OS Linux Protocol Stack Behaviour During Congestion
Tomašov, Adrián ; Grégr, Matěj (referee) ; Lichtner, Ondrej (advisor)
Táto práca sa zaoberá štúdiom a simuláciou zahltenej siete v laboratorných podmienkach a následne automatizovaným testovaním protokolového zásobníka v operačnom systéme Linux na tejto sieti. Na základe sady experimentov zistíme, aký dopad na správanie protokolového zasobníku má zahltenie siete. Následne bude popísaný spôsob simulácie a emulácie takejto siete fyzickým zariadením. Výstupom tejto práce budú rôzne konfigurácie strojov a emulátorov pre zahltenie siete, a k ním priložená sada meraní s vyhodnotením výsledkov. Tieto konfigurácie budú použité v automatizovanom testovaní jadra operačného systému Linux, aby sa chyby vo vývoji a pri implementácii sieťových protokolov a ovládačov pre sieťové karty našli rýchlejšie.
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FITKit Virtualization
Vavruša, Marek ; Korček, Pavol (referee) ; Vašíček, Zdeněk (advisor)
Thesis presents a method of FITkit hardware platform virtualization. First part describes an extension of the libkitclient library to support virtual devices and discusses a protocol design for FITkit device sharing in the IP networks. The protocol is extended to offer an automatic device discovery in local network based on UDP multicast. The second part of the thesis presents an architecture for a remote compilation of FITkit platform binaries and the implementation in the fcmake and QDevKit. The last chapter summarizes implemented tools and presents possible future extensions.
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Laboratory Demonstrator for LPWA Technologies Enabling the Communication via the Lightweight M2M (LWM2M) Protocol
Dvořák, Radim ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
As the number of wireless devices rises, so does the demand for reliable data transmission. To ensure the reliability of data transfers with such devices, suitable wireless technology, and a suitable transmission protocol have to be chosen according to the device capabilities and requirements. This thesis describes LPWA (Low-Power Wide-Area) technologies currently available on the market, both on licensed spectrum and non-licensed spectrum, focusing on licensed spectrum technologies (Narrowband Internet of Things, LTE-M) and also commonly used M2M enabled protocols for IoT devices. Furthermore, it compares those protocols from the communication parameters and data traffic perspectives with focus on overheads that further increase the amount of data transmitted but are necessary to ensure reliable data transmission. Lastly, it focuses on LWM2M protocol describing it to the detail and describes an LWM2M C++ library created as part of this thesis. In addition, a laboratory demonstrator was created utilizing this library.
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Application of simulation model of access network
Szymeczek, Andrzej ; Sládok, Ondřej (referee) ; Grenar, David (advisor)
The topic of the diploma thesis is " Application of simulation model of access network". The aim of the thesis was to create a part of the access network in which were tested simulations for TCP and UDP traffic. The theoretical part of the thesis deals with general information about the GNS3 program and the possibilities which this program allows. The next part of the thesis describes the Mikrotik RouterOS program, which was used in the topology. The next section describes the types of routing in IP networks, as well as the types of packet delivery. The practical part deals with the creation of test topologies and verification of the performance of the simulation tool. Furthermore, the practical part deals with the programming of a network generator for TCP and UDP traffic in the network. The generator was created by using a Bash script and a combination of the dd and nc commands. At the end, the thesis describes the results of simulations in terms of transmission speed, network throughput, packet size distribution and in the case of TCP also bidirectional delay – RTT.
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Streaming of 3D Geometry over Network
Rozehnal, Jaroslav ; Beran, Vítězslav (referee) ; Přibyl, Jaroslav (advisor)
This thesis is oriented on problematics of streaming 3D geometrics over network. Main importance is seen in efectivity of streaming, for what there is presented special protocol, working over protocol UDP, and adaptation of Level of Detail. For visualization of transmitted geometry trivial graphical engine is developed. In the end there are presented results of tests, oriented on protocol's efectivness.
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CIP industrial protocol simulation
Molent, Michal ; Musil, Petr (referee) ; Blažek, Petr (advisor)
The thesis is about industrial automatic CIP protocol, which belongs to SCADA systems. The first part is focused on basic principles of CIP protocol and on analysis of two protocols (EtherNET/IP and DeviceNet), which are based on CIP protocol. The second part deals with designing scenarios for a simulation. The simulation of one-way communication, two-way communication with help of reads from the console and two-way real time communication between Raspberries PI 3B+. The third part deals with a realization of the simulation, a start-up and a function of predefined scenarios and graphic interface. The fourth part deals with analysis network communication in situations, which occur during a protocol EtherNet/IP simulation.
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CAN sniffer
Skalický, Jakub ; Jílek, Tomáš (referee) ; Burian, František (advisor)
This bachelor thesis deals with creating CAN Bus sniffer witch sending data to PC by Ethernet. The main parts of developed PCB are microcontroller SMT32F407VGT6 by STMicroelectronics and Ethernet PHY KSZ8051MLL. In theoretical part you can find ARM and STM32F407VGTE information followed by Ethernet and UDP protocol introduction. The end of theoretical part is about CAN bus. Practical part is about design of board, developing it and measuring parameters of board. The end part of this thesis describes changes of software. Firstly there are described changes of firmware for add support of CanShark board. Followed is described adding of new functionality of canshark-gui PC application.
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Serial Data concentrator in VHDL
Řeháček, Tomáš ; Valach, Soběslav (referee) ; Burian, František (advisor)
In the bachelor’s thesis text there are summarized basics of VHDL language, ISE Webpack development environment is described. Also the way of communication and properties of serial unit are described as well as Ethernet standard properties and the way of communication via MII interface. Hardware used for the data concentrator design is briefly introduced in the next part. At the end of the thesis there is analysis of the data concentrator design for data transmission from serial unit to Ethernet using protocols UDP/IP.
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