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I/O Peripheries for Modbus/TCP server
Mikula, Matej ; Štohl, Radek (referee) ; Macho, Tomáš (advisor)
The thesis focuses on the development of input-output peripherals for a Modbus TCP server. Its goal is to create a functional model of a device with analog and digital inputs and outputs. The device is capable of communicating with the PLC Allen-Bradley Logix series. It can report the state of its inputs, and it is possible to set the value of its outputs. The functionality of the proposed device is verified by creating a simple application for the PLC.
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Raspberry Pi Pico with Ethernet
Zima, Jan ; Valach, Soběslav (referee) ; Burian, František (advisor)
This bachelor thesis focuses on the implementation of ethernet communication using microcomputer Raspberry Pi Pico and a physical layer chip. The communication is intended to be bidirectional between the microcomputer and other computer on a local area network (LAN) using the well-known MII interface. Microcomputer uses this network to communicate data which are acquired by distance sensors. A software which is outputting those acquired data to the console is implemented on the second computer. This thesis also focuses on a PCB design itself where individual electronic parts are connected making a functional circuit.
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Computer network design for a metal stamping plant
Daněk, Michal ; Martin,, BERKA (referee) ; Ondrák, Viktor (advisor)
The bachelor thesis focuses on the design of a computer network for a metal stamping plant. The first part of the thesis contains theoretical background. The second part contains an analysis of the current state of the network in the company. These first two parts were then used as a basis for the design of the new computer network, which is included in the third and final part along with an economic evaluation.
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Generating non-standard packets and data flows on Ethernet networks for teaching purposes
Mošnerová, Tereza ; Dvořák, Jan (referee) ; Jeřábek, Jan (advisor)
This diploma thesis is aimed at the process of generating non-standard data streams that contain hidden information. For this purpose a software called Ostinato is used. Ostinato allows to select protocols on the individual layers of the TCP/IP network model according to the needs and preferences, and moreover, data bytes can be inserted and modified arbitrarily using the HexDump fields. Various fields of the TCP/IP protocols are used to hide data on the network, transport and application layers. The generated data packets can be easily modified which enables to create several other versions of them. These can serve, for example, as a semestral project assignment for the subjects Communication Technology and Modern Communication Techniques taught at BUT. In addition, the size limits of the inserted data of the individual data packet options are tested. The functionality of the generated packets is verified by Wireshark. As a result, several .ostm and .pcapng files including a text file with their clear description are provided.
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Home security system
Čada, Jan ; Burda, Karel (referee) ; Lattenberg, Ivo (advisor)
This master thesis deals with the design and implementation of a security system for a family house. It consists of a central control panel, a control keyboard and detectors connected using cables. The first part of the thesis discusses the electronic security and fire alarm systems, describing the individual elements of these systems and their different types. Magnetic contacts, fire detectors, sirens and a mains power supply with UPS function are selected from the current offer based on a comparison of parameters. In the next section, a block diagram of the whole system is designed. Raspberry Pi Pico development board with an RP2040 microcontroller is selected along with a GSM module SIM800L for SMS alarm notification and an Ethernet module with a Wiznet W5500 chip for the possibility of implementing a web interface. Schematics of the individual modules of the system are designed - for the central control panel, input module with PCF8574 circuit and two PCBs of the control keyboard module, which is equipped with a button keyboard with backlight, character LCD display type 1602 and proximity sensor VL53L0X for automatic lighting when person comes closer than a defined distance. PCBs are designed according to the schematics. Their manufacturing is then ordered, all components are mounted and the PCBs are placed in a 3D printed enclosure in the case of the control keyboard, and on the mounting plate of the metal cabinet in the case of the central control panel, according to the designed mounting plan. For the selected piezo sirens, covers are designed and 3D printed in the design of the selected Paradox NV5 motion sensors. In addition to the central control panel and the control keyboard, door and window contacts, fire detectors and sirens are installed in the house. The next part is dealing with the development of the control software for the central control panel and control keyboard in MicroPython language and the design of a custom communication protocol on the RS-485 bus for communication between the central control panel and control keyboard. Both control programs are based on the state machine principle, and their state diagrams are presented in the thesis. Part of the text is also focused on the development of the central control panel web interface and integration of the desinged system into the Home Assistant open-source automation system. The last part describes the activation and testing of the system in real conditions of a family house.
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Multi-protocol sniffer and analyzer
Lukáš, Vojtěch ; Zeman, Kryštof (referee) ; Krajsa, Ondřej (advisor)
The subject of this thesis is the design of a device that captures Bluetooth Low Energy or IEEE 802.15.4 frames and sends them via Ethernet interface to a computer for further analysis using Wireshark. The device is based on the CC2652RB microchip from Texas Instruments, which is accompanied by WIZnet W5500 Ethernet controller. This thesis describes software and hardware aspects of said device, furthermore it briefly mentions a custom designed Wireshark dissector. In addition, this thesis contains a quick handbook for Texas Instruments microcontrollers software development.
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Precision datalogger and voltage signal source
Šafář, Pavel ; Matějka, Tomáš (referee) ; Kubíček, Michal (advisor)
This work deals with the design and construction of a precise device for voltage measurement, which at the same time enables the generation of a precise output voltage signal. The various effects of interference sources on accuracy and the possibilities of their elimination are discussed here. The selected solution concept is described. The work also deals with individual phases of development and explains the reasons for their modifications in different phases.
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Measurement module with PTP synchronization
Brabenec, Josef ; Burian, František (referee) ; Havránek, Zdeněk (advisor)
This master thesis deals with the time synchronization of precise measuring systems. The thesis examines various protocols for time synchronization and mainly focuses on the use of Precision Time Protocol (PTP). The thesis describes the key features and implementation possibilities of this protocol, and at the same time it deals with devices that are compatible with PTP. The firmware design for using the PTP protocol on the Cora Z7 development board is analyzed in detail. The PTPd library is used to implement the PTP protocol. Additionally, other necessary libraries were created for working with Ethernet frames, collecting time stamps, setting, adjusting and reading clocks. The thesis also includes experimental measurements aimed at verifying the practical functionality of the proposed solution.
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Design Computer Network in a Family House
Vala, Lukáš ; Dvořák, Petr (referee) ; Ondrák, Viktor (advisor)
This thesis deals with the entire network in a new house. The first part deals with the analysis of the current state of the house, the possibilities and requirements of the investor. The second part focuses on theoretical foundations. The third part deals with the design solutions and requirements for implementation.
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Lab exercise of electronic burglar alarm system with communication over Ethernet network
Harth, Petr ; Pust, Radim (referee) ; Burda, Karel (advisor)
This bachelor thesis deals with electronic burglar alarm systems that communicate over Ethernet network. On this basis, the lab exercise is designed for an integrated security system Xtralis 3000 to ensure access control and camera surveillance. The concept of lab exercise is justified, and prepared documentation for it. Subsequently, a brief analysis of the Xtralis 3000 system security is also made. The first part describes the development of electronic burglar alarm systems. The history as well as current state of the art of electronic burglar alarm systems are outlined. Also camera surveillance systems and access systems, which are nowadays combined with electronic burglar alarm systems, are briefly mentioned. The thesis goes on by describing the current trend of integrating various security systems into one system that communicates over Ethernet network. In the second part of this thesis the integrated security system Xtralis 3000 is being analyzed. First of all its general characteristics are described and then it goes on by explaining the distribution of the three subsystems, namely the access system S3000, the camera surveillance system V3000 and management software M3000. Subsequently, these systems are being described along with their features. After that, selected network protocols, which integrated security system Xtralis 3000 uses to communicate between its components, are being briefly discussed. In the third part a brief analysis of security integrated security system Xtralis 3000 is carried out. This system is divided into six parts in terms of threats of attacks. The fourth section it is devoted to the concept of lab exercise, which includes introductory balance sheet, the debate over the assigned elements, content and structure of the lab exercise. In the fifth part, is the thesis offers documentation to the lab exercise of integrated security system Xtralis 3000 communicating over Ethernet network, according to which students may perform this lab exercise. And finally, in the sixth part are the instructions for teachers, which describe how to introduce the lab exercise in teaching, with the associated problems and their solutions.
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