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Implementation of drivers for wireless sensor unit
František, Milan ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
This work is concerned with the use of digital and analog sensors with wireless unit IRIS. There is a basic description of the software stack BitCloud, including important functions with a used sensor types and used buses. In the work is described procedure for creating drivers for the various sensors and their implementation in a stack BitCloud. In conclusion of this work is a practical example of right implementing of the individual drivers.
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Modification of web system for electronic document management
Dufka, Zbyněk ; Fujdiak, Radek (referee) ; Botta, Miroslav (advisor)
The aim of this diploma thesis is to provide a systematic study of Open Journal System, which is designed for electronic research papers publishing. Due to the nature of information published in this system, there is an elaborate approval process controlled by the editor. The main objective of this thesis is the realization of a system module, which would, at the end of the approval process, implement a stamp incorporating metadata of the source magazine to individual electronic documents. The thesis gives insight into the development of the structure of the Open Journal System and, briefly, describes the possibility of implementing this system. Another part of the work focuses on the sub-steps of the stamping module which was implemented into the system. This module allows editors to stamp individual electronic PDF documents that are published within the magazine and its various volumes. The module is designed to simplify the editing process of the journal with no prolongation or any other additional time required. Among other things, the reader learns how it is possible to create a block module, which can be used in the sidebar to display any system information. The work, also, previews the possibility to customize the user interface. Each implemented part contains solution proposals and, further, the implementation method and technical description is described in more detail. For better understanding and integrity of the work, stretches of the given code are also included, this might serve as an inspiration for users‘ modifications of the system.
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Localization of device in wireless environment
František, Milan ; Komosný, Dan (referee) ; Botta, Miroslav (advisor)
The work is focused on localization in wireless networks and localization using inertial measurement units. There is also included a theoretical analysis of used localization techniques. The work also describes how to create application for data collection, application for receiving and processing data and used database. In conclusion of this work is verifying the functionality of whole system.
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Sound level meter for embedded systems
Stejskal, Tomáš ; Schimmel, Jiří (referee) ; Botta, Miroslav (advisor)
The aim of this work is the design and implementation of a sound level meter for emdedded systems. It is designed sound level meter sensor. This sensor includes a microphone, microphone preamplifier and ADC. This sensor is connected to a development kit STM32F4 Discovery, where sound is processed. It is processed filtration, time weighting, calculation of sound leve and loudness weighting. The sound level is then sent via the serial communication USART. This thesis includes a theoretical analysis of noise and its human perceptions. It also describes the development platform used.
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RSSI based localization of sensor units in wireless network
Popovec, Juraj ; Fujdiak, Radek (referee) ; Botta, Miroslav (advisor)
This thesis describes processing of RSSI parameter and its subsequently use for cal- culating distance of wireless node. This thesis also describes analysis of radio model environment and calibration of key variables needed for localization. There is also sys- tem realized for localization of wireless nodes in sensor network. It uses dynamically calibrated variables for calculations, which describes radio model.
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Analysis of ZigBee standard in the NS-2 simulation tool
Stračár, Ivan ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
The semestral project deals with the simulation of wireless sensor networks based on ZigBee standard in Network Simulator 2. Project is divided into two parts - theoretical and practical. The theoretical part consists of a description of standard ZigBee, communication protocols and communication used by this standard. The practical part describes the simulation tool, configuration of wireless networks in this tool, the actual simulation and evaluation of throughput, delay, loss rates and energy consumption using network metrics. Two topologies were simulated defined by the ZigBee standard. It was the STAR and the MESH. Changes were observed in the parameters of the network TCP and UDP transmission in these topologies. Evaluated metrics are calculated for changes in parameters of the framework (BO, SO). The changes were most expressed in the consumption of the energy by the network by the combination BO, SO. During the simulation, the data rate of the network automatically changed until the loss rates of the network was smaller than 1 %. In order to achieve optimal network throughput. Direct difference between TCP and UDP transmission could not be compared because the simulation results were generated by different data rate nevertheless influence of parameters on the properties of super network framework were confirmed.
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Wireless sensor system
Kotouček, Filip ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
Bachelor thesis describes the design of wireless sensor network composed of modules deRFmega128 and Raspberry Pi. It Contains a description of the created protocol for wireless communication and protocol for serial interface on the gateway. It also describes web interface for general management of network. The work includes analysis of nodes energy performance and measurement of solar panels as a potential secondary sources of energy.
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Wireless IP Camera With a Raspberry Pi
Sidor, Peter ; Botta, Miroslav (referee) ; Červenka, Vladimír (advisor)
This thesis deals with the developing of an additional module for Raspberry Pi and with optimization of the efficiency of powering the whole device. The thesis also deals with the acceleration of the Operating System which is used by the entire device. The first part of this work describes the principles of functioning of the sensors and DC/DC converters. The work focuses on the selection of proper components for this module. The Printed Circuit Boards of the selected DC/DC converters were created in the program Eagle for efficiency measuring. As for the next part, there was created a program for turning on and off the entire device. This part presents a description of the possibilities of accelerating the operating system for Raspberry Pi. The last part of the thesis focuses on design of the final operating system.
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