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Multicast Communication in Wireless Sensor Networks
Valouch, Jaromír ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This master’s thesis describes energy consumption in wireless sensor networks. It is focused on energy consumption during communication and it provides rules to save energy during this operation. There are terms like wireless sensor networks, multicast, ad-hoc networks, routing protocols, multicast routing protocols, IGMP protocol, AODV routing protocol, MAODV routing protocol explained in this thesis. The main difference between multicast and unicast communication is analyzed as well. In the end of this thesis there are results of simulation small wireless sensor network from network simulator2. The simulations were focused on energy consumption during communication. The length of packet was changed during communication between two nodes in this simulation. In wireless sensors network nodes play a dual role as both data sender and data router therefore there were made research into energy consumption senders, routers, receivers in wireless sensor network during communication.
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Proposal of wireless sensor network for indoor monitoring of people and objects
Záděra, Zdeněk ; Mráz, Ľubomír (referee) ; Morávek, Patrik (advisor)
This thesis describes the design of wireless sensor network (WSN) for monitoring of people and objects in a building. The work deals with issues of localization and tracking in sensor networks and algorithm implementation to sensor nodes. It also contains a description of the aplication requirements. These requirements form the basis for the proposal. The hardware part of the network consists of sensor nodes IRIS from Crossbow company. The work describes the properties of these nodes. Next part deals with of propagation model and design of the localization algorithm. The paper also describes the communication in the network. The thesis also includes a practical realization of the proposed network, the localization system and its testing. In the work is included a CD with the building schematic in AutoCAD and with source code of created applications.
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GPS based Localization using the Java ME application
Figurny, Radek ; Morávek, Patrik (referee) ; Růčka, Lukáš (advisor)
The task of the Master's thesis has been to develop the MIDlet, which is able to receive data from an external GPS module via Bluetooth. Data are received in the NMEA 0183 format and are processed to extract longitude, latitude, elevation, velocity, number of visible satellites and measurement accuracy of longitude, latitude and elevation. Users have a possibility to save their actual location with a short description to the cell phone’s memory. The MIDlet is also able to save a user defined way-point and navigate to this way-point. The MIDlet itself was developed in the Netbeans IDE with a software development kit (SDK) made by Nokia company. This kit is designed for the Symbian OS s60 3rd edition FP1, which contains a s60 emulator and a s60 MIDlet for a direct compilation in the cell phone. The MIDlet is made of three main parts. The first part shows a longitude, latitude, elevation, velocity, longitude and latitude measurement accuracy, date and time. The second one shows a direction of north, latitude and longitude. The last one shows a direction to the selected way-point and a distance to this location. In theoretic part of the thesis there are described the GPS navigation system, Bluetooth system, geodetic system WGS 84 and programing language Java and its part Java ME.
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Web applications with respect to accessibility
Kříž, Tomáš ; Malý, Jan (referee) ; Morávek, Patrik (advisor)
This master’s thesis deals with problems of the web applications with respect to accessibility. At first it describes accessibility of the web pages. There are mentioned main reasons and initiatives for making accessible web pages. The first chapter is also aims to handicapped users. The handicapped users are separated to groups according to their handicap and impacts on accessibility of the web pages. The second chapter presents methodics of the accessible website, Czech and foreign rules and lawful orders. The foreign (WCAG, Section 508) and the Czech (Blind Friendly Web and Pravidla pro tvorbu přístupného webu) representatives of the rules are introduced in the next part of this chapter. The idea of the accessible web application – electronic shop - is presented in the third chapter. There are subscribed the conception of electronic shop, advantages and disadvantages and main functions. In the next part of this chapter there are mentioned the primary rules of the writing the source code of the web pages which are used during the creating of the accessible web application of the electronic shop. Closely there are introduced scripting language PHP, database system MySQL and Cascading Styles Sheets (CSS). The part of the master’s thesis is a mentioned accessible web application of the electronic shop. The presentation is placed on http://www.xandy.cz/tmp/ and presents the accessible web system with the respect to accessibility. Creation and description of this web application is mentioned in the last fourth chapter.
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Modern cryptanalysis
Petřík, Tomáš ; Morávek, Patrik (referee) ; Martinásek, Zdeněk (advisor)
Issues of this thesis are focused on side-channel cryptanalysis. Particularly attention is paid to differential power analysis, when is simulated an attack on the cryptographic module for different conditions and for different structural features of this module. As the cryptographic module is used a PIC microcontroller, which is operating with AES symmetric encryption algorithm. For this purpose, a design of experimental printed circuit board was created. Then, this PCB was equipped only with the necessary components for the function of the cryptographic module. Cryptanalysis is aimed on current consumption of crypto module that is caused by execution of AddRoundKey instructions. Power consumption of PIC microcontroller is measured in depending on the size of power supply voltage, size of serial resistor, size of bypass capacitor, and this thesis also examines the influence of ambient temperature on power consumption of PIC. The measured values are graphically presented and then discussed.
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Research of Localization Algorithms in Wireless Sensor Networks
Holešinský, Pavel ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This diploma thesis is focused on research of localization algorithms. Each developed localization algorithms are generally application specific. Because of application requirements diversity, many variants of localization algorithms exist. In case of finding appropriate localization algorithm for concrete application usability, existence of real condition simulation environment is useful. Development of this simulation environment was made simultaneously with both localization algorithms. At first, survey of available localization technic was performed and their summary was listed. Further work was aimed on research of two localization algorithms. Both of them use triangulation mechanism to determine unknown node position. This mechanism is based on measurement of distance to three reference points with known position. It would seem that both algorithms are similar, but simulation shows their difference and presents their suitability for diverse conditions.
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The Small Family Business Information Strategy
Morávek, Patrik ; Hurtová, Jitka (referee) ; Kříž, Jiří (advisor)
This diploma thesis is focused on the information strategy of the small family business The Faltys´ bookstore. There are discussed internal and external conditions that have a relevant influence on a proposal of the information strategy and elaborated proposal of the information strategy that will serve as an important base for management decisions and plans.
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Energy demands of localization algorithms
Maňák, Jiří ; Červenka, Vladimír (referee) ; Morávek, Patrik (advisor)
This masters thesis deals with technics of localization for wireless senzor networks with a focus on anchor free location algorithm by authors G. Jianquan and Z. Wei. It also describes the available simulations frameworks based on OMNeT++ platform and implementation of the anchor free algorithm in the simulation program Castalia. Furthermore, it deals with the energy demands of this algorithm based on results of simulations that were done for the communication unit IRIS.
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Centralization and maintenance of distributed information
Valčák, Richard ; Jelínek, Mojmír (referee) ; Morávek, Patrik (advisor)
The master’s thesis deals with the web mining, information sources, unattended access methods to these sources, summary of available methods and tools. Web data mining is a very useful tool for required information acquiring, which is used for further processing. The work is focused on the proposal of a system, which is created to gather required information from given sources. The master’s thesis consists of three parts, which employ the developed library: API, which is used by programmers, server application for gathering information in time (such an exchange rate for instance) and example of AWT application, which serves for the processing of tables available on the internet.
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Wireless Sensor Network Simulation Model in J-Sim Tool
Vrzal, Tomáš ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This thesis deals with the issue of wireless sensor networks and communication protocols. Is explained of what the network is composed, what standards are used and in what sectors are most often used. The main scope of work is to introduce with the localization algorithms using in WSN. Algorithms are clearly divided into groups according to the methods used. In work is describes the structure used simulation tools J-Sim, for creating a wireless sensor network. To create network will be then applied different localization algorithms, which must first be implemented in a simulator using Java code. All generated classes and the algorithms are detailed described in the work. Results from simulations are detailed and graphically displays for individual localization algorithms.
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