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Wireless sensor network
Beneš, Vladimír ; Pavlík, Michal (referee) ; Bohrn, Marek (advisor)
The bachelor thesis describes the design and implementation of wireless sensor network for temperature measurement. Network have to meet requirements for multi-hop network-type. That means, the sensor unit is out of the range, information about the measured temperature will be transfer between sensors. The sensor that is in range of the control unit will retransmit data from multiple sites to the main device. The sensors and the control unit are controlled by a microcontroller and a battery-powered for better mobility. The transfer of measurement data uses free zone for short-range devices - 433 MHz.
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Wireless sensor network
Beneš, Vladimír ; Pavlík, Michal (referee) ; Bohrn, Marek (advisor)
The bachelor thesis describes the design and implementation of wireless sensor network for temperature measurement. Network have to meet requirements for multi-hop network-type. That means, the sensor unit is out of the range, information about the measured temperature will be transfer between sensors. The sensor that is in range of the control unit and will have saved data from multiple sites, to transmit all the data controller. The sensors and the control unit are controlled by a microcontroller and a battery-powered for better mobility. The transfer of measurement data uses free zone for short-range devices - 433 MHz.
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Web Application for Monitoring of Elecric Energy Consumption
Režný, Jan ; Koutný, Martin (referee) ; Šimek, Milan (advisor)
Bachelor thesis called „Web Application for Monitoring of Elecric Energy Consumption“ focuses on receiving, processing and visualization of measured values from wireless sensor network, which is measuring the consumption of electrical devices. The aim is to create a applications for data receiving and proccessing and application which can manage connected power meters, user-defined devices and its association, export measured data and display reports, graphs and statistics obtained from these measured values.
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Wireless Sensor Network Base on Android Platform
Bělohoubek, Tomáš ; Zbořil, František (referee) ; Samek, Jan (advisor)
Mobile devices on Android platform includes many sensors, wireless modules and methods for determining the position. This makes them interesting for use in area of sensor networks. This thesis examines the potential of these devices and their practical use in wireless sensor networks. Design and implementation of the custom application is based on these findings.
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Realization of narrowband powerline modems
Kubíček, Lukáš ; Krajsa, Ondřej (referee) ; Koutný, Martin (advisor)
This master's thesis deals with a narrowband power line communication technology (PLC) and focuses on the potential use in the sensor networks. This thesis addresses both the structure and basic properties of PLC standard and possible use of this application in practice. The main part of this work is implementation of the PLC networks with IC ST7570 of STMicroelectronics. As an example of practical use of PLC technology, this network is connected to the computer where the data from the sensor (meter) connected to a PLC modem, stored in a database using a PHP script as presented by the Internet. Problem solving in this thesis focuses primarily on the simplicity and universality of the resulting applications.
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Wireless Sensor Networks Security
Nagy, Jan ; Trchalík, Roman (referee) ; Očenášek, Pavel (advisor)
This thesis deals with the security of wireless sensor networks, mainly of the industrial standard ZigBee. The aim of the work is to familiarize with the 802.15.4 standard and the ZigBee technology, especially with present methods of security in this field. I have also analysed the requirements for the security of this technology. Further aim of this work is the introduction of the ZigBee kit and description of the Microchip's ZigBee stack. Analysis of the stack is connected with practical test of security functions in the ZigBee laboratory.
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Multiplatform communication in access networks
Novotný, Bohumil ; Sýkora, Jiří (referee) ; Křepelka, Václav (referee) ; Škorpil, Vladislav (advisor)
Doctoral thesis deals with failure detection methods in wireless access network using distributed stochastic algorithms. A new method of detecting a fault based on the push-sum algorithm has been designed and simulated. Within the scope of the work objectives, the statistical credibility of the average push-sum protocol convergence rate representative and the effect of message loss during the calculation on the robustness of the system using this protocol were compared. Based on the acquired knowledge, the ability of the protocol to mathematically derive deviations from the real average of the values in the specified topology was demonstrated and thereby the existence of an abnormality in the network has been proved or refuted.
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Optimal methods for sparse data exchange in sensor networks
Valová, Alena ; Poměnková, Jitka (referee) ; Rajmic, Pavel (advisor)
This thesis is focused on object tracking by a decentralized sensor network using fusion center-based and consensus-based distributed particle filters. The model includes clutter as well as missed detections of the object. The approach uses sparsity of global likelihood function, which, by means of appropriate sparse approximation and the suitable dictionaty selection can significantly reduce communication requirements in the decentralized sensor network. The master's thesis contains a design of exchange methods of sparse data in the sensor network and a comparison of the proposed methods in terms of accuracy and energy requirements.
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Compressive sampling for effective target tracking in a sensor network
Klimeš, Ondřej ; Veselý, Vítězslav (referee) ; Rajmic, Pavel (advisor)
The master's thesis deals with target tracking. For this a decentralized sensor network using distributed particle filter with likelihood consensus is used. This consensus is based on a sparse representation of local likelihood function in a suitable chosen dictionary. In this thesis two dictionaries are compared: the widely used Fourier dictionary and our proposed B-splines. At the same time, thanks to the sparsity of distributed data, it is possible to implement compressed sensing method. The results are compared in terms of tracking error and communication costs. The thesis also contains scripts and functions in MATLAB.
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Optimization of data representation for target tracking using sensor network
Cabalová, Klára ; Veselý, Vítězslav (referee) ; Rajmic, Pavel (advisor)
The aim of this bachelor thesis is to find optimal data representation for target tracking using sensor network. There is described a model of decentralized sensor network and also the application of so called dictionary to represent the measured data. Also, there is theoretically introduced the K-SVD algorithm that is used for dictionary learning and there are learnt dictionaries for data representation based on the model signals. These dictionaries are compared with each other.
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