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Distance Estimation in Wireless Ad-hoc Network
Botta, Miroslav ; Mráz, Ľubomír (referee) ; Šimek, Milan (advisor)
The work deals with processing of radio received signal strength in IEEE 802.15.4 which communicates in 2.4 GHz ISM band. The signal is processed by the three approximation methods. They are tested for their effectiveness for measuring in different radio environments. Furthermore, the work deals with calculation of the most efficient coefficients for distance calculating by radio transmission fucntions. It defines the issues of such solutions on practical examples. The work also deals with the experimental algorithm for implementing dynamic calibration of the coefficients. It describes the design, processing and verification of this system in practice.
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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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Light Weight Mesh Experiments
Nováček, Richard ; Botta, Miroslav (referee) ; Šimek, Milan (advisor)
Semestral thesis deals new technology Lightweight Mesh and its implementation on a laboratory task to the subject of wireless sensor networks and the creation of appropriate documentation, which will serve as a basis to students. Also included is the use of serial communication, timer and ADC in Atmel Studio.
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Wireless model 802.11 in NS2
Botta, Miroslav ; Kubánková, Anna (referee) ; Šimek, Milan (advisor)
Theme of this work is simple wireless simulation Network Simulation 2 tool. The work consists of more parts. In the first section is basic theory about Wi-Fi networks, they types and standards and describes how useful can it be in practical life. In the second section there is a short annotation for programming in TCL language and possibilities of NS2 for simulating wireless networks. In the end there is a complex simulation of this network. In the third part there are two complex tasks where the information’s are drawn from the previous two parts.
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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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Wireless sensor network configuration
Minár, Tomáš ; Botta, Miroslav (referee) ; Morávek, Patrik (advisor)
This bachelor’s thesis is dedicated to wireless sensor networks in terms of energy consumption of operating systems. Requirements and configuration principals to assure low energy consumption and effectiveness of sensor nodes are discussed in more detail. This document should serve as an introduction to wireless sensor networks and provide a reader with information about commonly used standards, their differences and field of application. Three most widely used operating systems: TinyOS, Contiki and BitCloud are described and used in practical experiments. The practical part deals with configuration of IRIS sensor node in those operating systems. This part compares the influence of different configurations on energy consumption.
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Communication between devices using Bluetooth technology
Gasior, Ondřej ; Botta, Miroslav (referee) ; Lattenberg, Ivo (advisor)
This thesis focuses on communication between mobile devices running the Android operating system and the PCs running MS Windows via Bluetooth. The main task is to create an applications which creates network, representing virtual room, for the exchange of text messages (ie. instant messaging). This involves creating a platform independent protocol and consequently its actual implementation. At first, Bluetooth technology and its principles are discused in detail, then both supported platforms are introduced, including their programming languages. The conclusion focuses on designed protocol and the analysis of both application with their source code using including sample of format of sending messages.
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Creation of an experimental wireless sensor network
Piro, Šimon ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
In this thesis, there will be experimental wireless sensor network created. Simple mo- nitoring application will be running on this network and storing data in database. For easier maintaining of network, there will be prototype system created, which will allow remote firmware upload to network nodes. This system will use Bootloader application from Atmel company combined with Serial to Ethernet converter. This system will al- lows mass upload of firmware to nodes from any place in the world with Internet access. Information about network will be stored in database which will include table for nodes and connections where its possible to see link quality for each link in the network.
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Energy Self-sufficient Wireless Module for Sensoric Applications
Jacko, Róbert ; Botta, Miroslav (referee) ; Šimek, Milan (advisor)
Masters thesis deals with design and practical implementation of wireless sensor module. The primary requirement for this module is its energy self-sufficiency. In this context, the work gets to the subject of "energy harvesting". Then, in terms of energy requirements, several wireless communication platforms which are favorable for the selected application, are compared. From mentioned technologies was chosen communication platform IQRF. The next parts deals with initial prototype of sensor module, which will be demonstrated as the application of measuring wind direction. This paper describes the hardware and software solution. Followed by a detailed analysis of its properties in terms of energy requirements. Based on the obtained measurements resource parameters are set.
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