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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.
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Audio Saving Module
Strašil, Ivo ; Kouřil, Jiří (referee) ; Říha, Kamil (advisor)
The aim of this thesis was to design and construct an autonomous, hardware voice recorder/player module. The device is made as a compact, built-in component for a motherboard of a target appliance. During recording, the incoming analog voice signal is converted to a digital stream by an ADC with 16 bits resolution and 24 kHz sample rate. Microcontroller LPC2103 (ARM7TDMI core) processes data, recalculates resolution and sample rate, encodes and converts to WAV format and save into a FAT/FAT32 filesystem on a Secure Digital memory card. At playback, the process is opposite: the microcontroller reads file from the memory card, decodes the stream and sends it to a DAC and then to a reconstruction filter. So there is an analog voice signal at the output again. The firmware allows control by logic inputs or by a serial bus, processing of uncompressed WAV files or WAV files with A-law or IMA ADPCM compression, continual recording including automatic freeing of card space by deleting the oldest records and a usage of a voice emphasis filter or of a signal dynamic compression circuit.
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Virtual environment by Xen software
Kulíř, Tomáš ; Kouřil, Jiří (referee) ; Jelínek, Mojmír (advisor)
This bachelor thesis, which is called the virtual environment by Xen software, deals with the operating system GNU / Linux and its distributions. It also deals with the virtualization on the server or desktop computer, in particular, describes in detail the Xen environment, including all of its options and the most forgotten server services. In the first chapter is analyzed the concept of GNU / Linux. First, there is documented history. Another section deals with a brief overview of the most commonly occurring distributions. The main part of this chapter is primarily devoted to a specific distribution Debian. There is described not only the history and development of this distribution, but also more packaging system is analyzed there. The last part of this chapter is devoted to the installation options with a detailed description of the whole process step by step. Second and the most important chapter is devoted to virtual environments. Once again, there is first described their history, the possibility of practical use and the types of virtualization are also indicated there. Reader will find there a brief analysis of the most commonly used virtualization systems. The third chapter detailed deals with the Xen technology. There is not only explained the principle on which the virtualization is built, but the main part of this chapter focuses on the practical use and a summary of basic functions. The next section describes the installation and administration of hypervisor including previous preparation. A very important point is also creation of the virtual machines and their control, their migration to another physical hardware or a description of the installation of other operating systems than Linux. Fourth, shorter chapter deals with a listing and a brief description of server services. The final chapter consists of a summary of problems or complications, which in the course of this work occurred.
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Handset based computer control
Kovář, Jan ; Kouřil, Jiří (referee) ; Polívka, Michal (advisor)
The master's thesis is focused on Java based solution of remote PC control using a mobile phone. Application is made up of client and server, which are communicating via Bluetooth interface. The client represents a mobile application (MIDlet) and commands sent to the server. Server, run on a computer (with any operating system), read these orders and evaluate their algorithms to control the PC. The issue of the draft text is divided into two units, each of them describes just one part of the application. The client describes its functionality. It is also fully examines the structure of mobile application programmed in Java ME, together with the most important methods of this code. Text dealing with the server part describes its activities as well as individual options utilization. It describes the structure of the server application which is programmed in Java SE. There are also a description of the most important methods of the Java SE code. This thesis gives the results of both components of the application that allow to remotely control the computer and especially the presentation. The application was properly debugged and tested, and form a functional multiplatform software.
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Audio amplifier controlled by the IP protocol
Dvořák, Petr ; Schimmel, Jiří (referee) ; Kouřil, Jiří (advisor)
The bachelor thesis is intent on projection and realization of a device whitch is capable of communicate with a remote client through the Ethernet making use of the protocol set TCP/IP. This communication will be used for the control of analog and digital outputs of the device, which is able to be attached to any amplifier of audio signals. One of used protocols is UDP. This protocol is closely described, because it is used for transfer of data controlling outputs. The whole device is controlled by microprocessor ATmega32, which operates the communication with the ethernet interface through the controller ENC28j60, the communication with the D/A converters MCP4922 and controlling of digital outputs and a display. The device has its own IP and MAC address for identification in the network. It is possible to edit both addresses in the menu of the device with the help of the module LCD, the display of 2x16 characters with fours buttons. The audio amplifier staffed by the voltage controlled by the computing amplifiers SSM2018T is connected to this device. The amplifier is proposed as six-channel with symmetric inputs through the connectors XLR and unsymmetric outputs through the connectors CINCH. The operating programme which is able to be run on PC with the operating system Windows is necessary for the remote control of the device in the network and all functions of the device are controlled by this programme. This programme enables to control the device after setting the IP address of the destination device and the communication establishment. The motherboard is proposed as a universal module which keeps at disposal up to 6 analog outputs with the range of the control voltage 0 – 5 V and up to 21 binary inputs/outputs.
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Application design for test question generation
Žoldoš, Petr ; Kouřil, Jiří (referee) ; Lambertová, Petra (advisor)
The purpose of the Bachelor work is to design and implement secure database management system. It's task is management of the test questions in an user-friendly application. It allows user to insert and erase questions, edit them, sort them by groups as well as export them to external XML files. The theoretical part is dealing with characteristics of used programming languages. Second part is about building the database system and describing the way it works.
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Application for Network Monitoring and Management for ISP
Kmoníček, Tomáš ; Kouřil, Jiří (referee) ; Šimek, Milan (advisor)
The objective of this master‘s thesis is to develop an ISP application for service monitoring and management. A fully functioning monitoring software has been developed, which allows the administrator to check the round-trip time and the packet loss in the entire network. Another function of the application is obtaining information from network devices by the SNMP protocol (e.g. packet and byte count etc.). The software uses the information to create hour, day, week or year graphs. All graphs and statistics are visualised at the administration webpages. For the purpose of client administration, a clients database has been developed. This part of the application contains functions of payment administration, IP addresses, contacts etc. Both parts of the web pages have been developed using PHP and AJAX, which makes the application similar to standard desktop applications. The testing application has been developed using Python and the entire application has been designed for modules, which can be later used for the development of other functions.
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Transmission of Audio Data Using RTP Protocol
Novotný, Roman ; Atassi, Hicham (referee) ; Kouřil, Jiří (advisor)
This project is about technology of multimedia transmission in the real time. Introduction of this work narrate model TCP/IP. Next the bachelor´s thesis is principally aimed on theoretical design of application, which is minimally able to transfer audio data between two computers by the help of the protocol RTP. This part is included in protocols for transmission of data in the real time, especially protocol RTP and then freely accessible libraries, which are written in language C and C++, in which is RTP protocol just implemented. End of this work comes out from these knowledges, in which is realized theoretical design and it is in developmental environment of Borland Builder C++.
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Wireless Sensor Network with Atmel AVR Microcontrollers.
Mráz, Ľubomír ; Kouřil, Jiří (referee) ; Šimek, Milan (advisor)
This diploma thesis describes the standard IEEE802.15.4 and Zigbee for wireless sensor networks. These norms are described in detail in the first two chapters. The main priority of the wireless sensor networks is to minimize the power of the devices and the price while maximizing the reliability of the data transfer. Minimum consumption is provided by the significantly lowered complexity in comparison to the standard wireless networks. Further, the design of the concept of the complex and universal hardware platform focused on intelligent building is described. Software implementation of those norms is described in the chapters five and six. Finally, comparison of the designed hardware platform and the other commercial platforms is described in the last chapter.
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