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HW and SW for Ethernet-to-IEEE802.15.4 bridge
Růžička, Tomáš ; Štohl, Radek (referee) ; Fiedler, Petr (advisor)
In this work we deal with the converter, to serve as a bridge between the two protocols. These protocols are Ethernet and wireless IEEE 802.15.4 protocol. Wireless part of this work, however, I simulated via serial RS 232nd After Ehternetu can send data via TCP or UPD protocol. First is the need for a converter to connect to the network and then create a packet. Finally, it is necessary to also address the views received and sent data via Ethernet and the RS-232.
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IEEE 802.15.4 range measurements
Komadel, Lukáš ; Hynčica, Ondřej (referee) ; Fiedler, Petr (advisor)
In the master’s thesis IEEE 802.15.4 Range measurements I want to find out, whether atmospheric conditions have influence over the quality of communication between two ZigBee modules. I would like found the answer by long-time test, because I can’t found the proper place for the measuring, I must found the answer in the literature. In the second part of the master’s thesis I measuring, whether placing one of the module in the car have influence over the quality of communication. The module was placing in the various places in the car, on a dashboard, on a guest-passenger’s seat, in a pocket before guest-passenger and in luggage compartment. The car for the measuring was used Renaul Scénic my. 2004.
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Research into GPS system used for Wireless Sensor Node Localization
Juračka, Jan ; Číž, Radim (referee) ; Šimek, Milan (advisor)
Theme of the thesis is research and possibility of using GPS system from localization in wireless sensor network. Paper deals with the accuracy and energy consumption of GPS localization. Thesis also solve using of localization in local anchor system. Theoretical part describes IEEE 802.15.4 standard, capability of used nodes and describe ways how to use RSSI value to resolve location
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ZigBee Protocol for Wireless Sensor Networks
Bartek, Lukáš ; Nagy, Jan (referee) ; Zbořil, František (advisor)
The aim of this work is to analyze ZigBee standard - its characteristic, potential use and testing its implementation in simulators. This work is consists of four sections. The first section analyses the structure of IEEE 802.15.4 and ZigBee protocol stack means of communications, security and development of this standard. The second section describes features of available simulators. The third section is the manual for creating simulation environment in the selected simulator. The final section shows practical preparation, process and result interpretation. The goal of this project is evaluation of tested simulator for education and development.
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Signal processing in ZigBee system
Miloš, Jiří ; Bradáč, Zdeněk (referee) ; Hanus, Stanislav (advisor)
Master's thesis The Signal Processing in ZigBee System is focused on properties of Physical Layer of ZigBee (standard IEEE 802.15.4 - 2003). The work consists of three parts. The first part contains common view on using and properties of ZigBee. The next part focuses on the Medium Access Control Layer and in detail on the Physical Layer. There described signal processing in the Physical Layer in individual radio bands. The last part of the project contains the process of modeling in the MATLAB for both models of system ZigBee (bands 868/915 MHz and 2450 MHz). The last part of thesis deals with the simulations of BER depending on Carrier-to-Noise Ratio. Also examined the coexistence of systems operating in the same or a nearby frequency band. Based on the results of simulations there are given recommendations for the use of the ZigBee system in minimizing BER.
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Node Location in the ZigBee Network
Capalini, Richard ; Očenášek, Pavel (referee) ; Trchalík, Roman (advisor)
The master thesis is concerned with problem of localization of nodes in wireless sensor network WSN implemented by ZigBee technology. The thesis provide description of ZigBee architecture involving signal description. The method of evaluating coordinates basically do not depend on used measuring methods. The method of fingerprinting is included in separated category based on only statistical processing of RSSI data. Determination of coordinates of mobile node always needs finding out range, signal time of arrival (ToA) or angle of arrival (AoA) in respect to anchors node given dimension magnitude. The author found out three possible solutions for range measuring and one solution for angle of arrival measuring useable in context of ZigBee wireless sensor network. Finally the author discuss possibilities and constraints of ZigBee network with used measuring type.
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Mobile robot control system
Jiruška, Jiří ; Kříž, Vlastimil (referee) ; Hynčica, Ondřej (advisor)
This thesis deals with wireless mobile robot control. The thesis is divided into two main parts. The first part deals with design and implementation of communication protocol based on IEEE 802.15.4 providing communication between robot and PC. The topic of the second part is mathematical description of DC motor and rpm controller design.
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Diagnostic sensors in transportation systems
Tylich, Ladislav ; Arm, Jakub (referee) ; Hynčica, Ondřej (advisor)
The objective of this thesis is to get familiar with wireless networks standards and with standard IEEE 802.15.4. and communication principle in wireless sensor networks in short distances and create overview of RF chips in (300-1000)MHz with their comparrison. To choosen transciever modul create software. Main goal is to create module to measure and logging data from vibration harvester. Assessments based on measurements.
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Data collection by wireless technology ZigBee
Teplan, Miroslav ; Burget, Radim (referee) ; Koutný, Martin (advisor)
This bachelor study deals with communication standard IEEE 802.15.4, wireless technology ZigBee and describes its using in collective data collection area and telemetry. Teoretical part is formed by some chapters which detailing standard IEEE 802.15.4 and ZigBee technology and some chapters which detailing communication unit design from look peripheral solving and implementation firmware. Practical part have to do with itself realization communication unit for data gathering from measuring devices. It is based on circumscribed solving. Further smoothing - out proposal frame system in which the would be used technology ZigBee.
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