|
|
LoraWAN gateway for sensor network
Rehberger, Marek ; Juráň, Radovan (referee) ; Krajsa, Ondřej (advisor)
The master thesis deals with the design and implementation of a communication gateway for IoT technology, specifically LoRa / LoraWAN technology. In the practical part, the circuit diagram was developed and the circuit board was constructed in the Fusion360 program, and the software part was created for communication and data collection between the sensor part and the MQTT server.
|
|
|
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.
|
|
|
DMX 512 protocol analyzer for personal computer
Vahalík, Jiří ; Sysel, Petr (referee) ; Krajsa, Ondřej (advisor)
The bachelor thesis deals with the design of a DMX converter for a personal computer. The theoretical part summarizes the DMX, RDM and Art-Net protocols and other commonly used communication protocols used by microcontrollers. In the practical part, a device circuit is fabricated, which is subsequently processed as a printed circuit board. In the last part of the thesis, programs are designed to ensure the functionality of the whole converter.
|
|
|
Design and implementation of VoIP protocols tester
Polášek, Jakub ; Číka, Petr (referee) ; Krajsa, Ondřej (advisor)
This paper deals with ways and means of testing SIP or IAX2 based equipment and protocols itselfs. I analyse terminology and methodology for benchmarking of proxy and registrar servers as it was described in documents RFC 7501 and RFC 7502 from organization IETF. In the practical part is described the tester realization programmed in PHP programming language witch will use described methodology. Aplication is available in web based interface.
|
|
| |
|
|
Design and realization of a developement board for BeagleBoard
Ťapucha, Andrej ; Hanák, Pavel (referee) ; Krajsa, Ondřej (advisor)
Contents of the thesis is to design and create an expansion board for the BeagleBoard computer one plate . The first and very important part was to find out all the possibilities for an extension of the computer itself . Choose the right expansion port . To study the possibility distribution of individual pins . Followed by the appropriate extension election districts that demonstrate the function of each enlargement . Test was designed PCB that contains circuits that change the voltage level of the BeagleBoard to protect a mini computer to the testing of each gusset periphery prevent damage to itself or part of the BeagleBoard . The peripherals themselves bind different parts of theoretical introduction. More specifically the extension of the LCD display is selected segment and includes two lines of 16 characters . When the possibility to add additional components were necessary to deal with the shortcomings of the output pins , this problem was solved by using an expander . He extends itself BeagleBoard by another 16 pins . On these pins are connected together on the LCD matrix keyboard . The creation of the board are two circuit temperature sensors , but have a different type of communication using I2C and one second using 1 -Wire bus . The board also contains various other bus outputs , for example, UART bus. It also contains an output pin which can be controlled PWM modulation . The remaining pins are versatile GPIO pins which can be programmed to define a function using the Linux operating system . The result is a final board of the package control programs which make it possible to verify the individual peripherals.
|
|
|
Implementing of GSM modem in PBX Asterisk
Benýšek, Jiří ; Krajsa, Ondřej (referee) ; Šilhavý, Pavel (advisor)
Short Message Service (shortly SMS) is the most widely used type of communication systems. The main advantages are that allow a fast exchange of messages between devices, a very good availability through GSM and a reasonable price. Nowadays the SMS service support has expanded to include other technologies such as a service of the information navigation and the remote connection. The master‘s thesis concentrates on the Short Message Service, deals with basic principles and statements using by this service. The topic of the thesis is software PBX Asterisk and its possibility of SMS implementation, especially verification of SMS processing goes through the PSTN. After the basic introduction the master‘s work deals with the installation and configuration of the server. The main focus is on an installation of the operating system with an additional pack including necessary libraries and modules for a correct working of the server. The following section is paying attention to the Asterisk server configuration, especially a hardware card installation which is necessary for a connection with analog telephones, done by Bluetooth connections, set up user’s profiles of the SIP protocol and create a dial plan. This is followed by a verification of SMS option of the implementation and communication with GSM modem which is used as a gate for an exchange SMS between PSTN and GSM network. The last chapter of this master‘s thesis comes with the aimed results.
|
|
|
Low-power tracking device for motorcycles
Gryžboň, Jan ; Krajsa, Ondřej (referee) ; Kouřil, Jiří (advisor)
This bacheleor´s thesis describes the design of low power tracking devices, which should be used primarily for motorcycles. The objective is realization of the equipment to be controlled by a microcontroller, which will receive location information from GPS / GSM modules from SIMCOM. The resulting tracking devices will be able to send an SMS message with date, time and GPS location of the stolen motorcycle.
|
|
|
Design and simulation of passive optical network PON
Mikauš, Jiří ; Krajsa, Ondřej (referee) ; Reichert, Pavel (advisor)
The aim of master's thesis was to demonstrate chosen PON network in simulation software OPNET Modeler. The work deals with passive optical networks. In particular, solutions that are based on the transmission of Ethernet frames. EPON and 10GEPON standards are described in theoretical section. EPON Standard was introduced already in 2004. Newer 10GEOPN is back compatible, which is ideal as a suitable solution for modern network with a high data rates demands. The practical part describes process of developing network nodes for passive optical network. EPON model was developed in simulation tool, that demonstrates basic features of the standard IEEE 802.3ah. The simulation results are demonstrated in last section.
|
|
|
Billing system and call monitoring for PBX Asterisk
Depiak, Petr ; Šilhavý, Pavel (referee) ; Krajsa, Ondřej (advisor)
This master's thesis is focused on developement of billing system with the options of monitoring individual calls for software exchange Asterisk. Billing of calls is adaptible with the help of group of individual rules, consisting of tariff impulses, numerical prefix, with help of outgoing trunk and cost of the billed unit. The first part of this work is focused on instalation, configuration and preparation of individual components of the billing system. In this work is explained the architecture of the billing system and highlighted the purpose of work of the model database. Next we focused on the purpose and the principal system invidual function of the system including solution. At last there is a simple manual to operate the system with the help of created web interface.
|
guest ::
