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Mobile robot control system
Řezníček, Radek ; Kříž, Vlastimil (referee) ; Hynčica, Ondřej (advisor)
This thesis deals with differential drive wheeled mobile robot which is running under a real-time operating system. Introductory part is focused on theoretical description of robot and its original firmware. Practical part deals with creating software and implementation several methods that allow following the line by robot using reflectance sensor array. Significant part of this thesis is focused on design and implementation of communication protocol, based on IEEE 802.15.4 which provides communication between robot and PC. There is also created a PC application that allows to transmit commands to the robot and display information gained from robot.
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Home Security and Monitoring System
Valach, Lukáš ; Crha, Adam (referee) ; Šimek, Václav (advisor)
The thesis elaborates on an implementation of wireless home security system. The wireless communication utilizes IEEE 802.15.4 radios and ZigBee communication protocol. The beginning of the thesis provides specification of the intended system followed by an evaluation of usable energy harvesting solutions and later by consideration of single board computer systems suitable for implementation of the control node of the sensor network. The rest of the thesis describes design, implementation and testing of particular components of the security system. Conclusion evaluates the achieved goals and offers suggestions for future work. The end products of the thesis are physical devices implementing wireless sensor nodes, control unit of the security system as well as a graphical user interface for the system management.
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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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Internet of Things Device Based on Thread and 6LoWPAN
Piškula, David ; Nosko, Svetozár (referee) ; Musil, Petr (advisor)
Internet of Things is among the newest phenomena of information technologies. This work describes the evolution and future of the Internet of Things and provides an overview of its current applications, then summarize the communication interfaces and protocols usable for the creation of the Internet of Things. The main focus is put especially on the IEEE 802.15.4 standard, 6LoWPAN protocol and the Thread technology. It also explains the term of Cloud Computing, platforms that are providing it and related types of databases. The design, implementation and testing of a Thread based solution are part of this thesis.
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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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CCD camera with wirelles interface
Hynčica, Tomáš ; Fiedler, Petr (referee) ; Bradáč, Zdeněk (advisor)
The work is dealing with the problem of wireless transfer of visual information from CCD camera. A circuit board for the camera interface is designed and realized. The wireless communication is based on the IEEE 802.15.4. Software for components of the system is developed.
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Wireless Security and Surveillance System
Výborný, Jiří ; Frýza, Tomáš (referee) ; Prokopec, Jan (advisor)
This Master’s thesis deals with design and construction of a wireless security and surveillance system in ZigBee wireless networks (IEEE802.15.4). The design consists of creating a star network topology with intended monitoring of home area via end device boards paired with coordinator board, which provides basic networking functionality. End device is used to send data from a temperature sensor DS1631 and magnetic reed switches to coordinator. ZigBee module ZDM-A1281-A2 made by MeshNetics company embedded on each board contains a micro controller ATMega1281 and a transceiver AT86RF230 working in a 2,4GHz frequency band. System is able to notice of any door or window move actions and too high temperature. The non-fully functional ZigBee stack, which is called an Open MAC software, based on MAC (Media Access Control ) layer and PHY (Physical) layer from MeshNetics, has been used to develop the user software. Open MAC consists of three application samples in C code. One of them was modified by the user for an application of communication between the module and sensors. The same design with module RC2204AT made by Radiocrafts company was tested as well, but it couldn’t be executed. All developed boards have been constructed and tested via Terminal PC program.
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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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Universal wireless communication link using ZigBee modules
Kyselý, Tomáš ; Vychodil, Josef (referee) ; Prokeš, Aleš (advisor)
The work deals with the transmission of information via wireless ZigBee 802.15.4 standard. It describes the function, method and determination of this technology, the transmission system and security of information between ZigBee devices. It also shows the ability to connect ZigBee module to the computer, configure it for use on the network and comunicating in the network. Finally proposes the simplest diagram and PCB for the application.
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Control of wireless ZigBee network
Fuchs, Michal ; Prokopec, Jan (referee) ; Frýza, Tomáš (advisor)
The Master’s Thesis deals with a ZigBee technology and its devices working each other in wireless personal area network. The ZigBee and its advantages are compared with other wireless protocols working in ISM bands. A first part deals with a topology of IEEE 802.4.15 WPAN and the ZigBee features. Types and format of the ZigBee data-frame are mentioned. A Second part of this thesis describes a design and testing of the ZigBee devices. Results of this thesis are demonstrated on ZMU (ZigBee Modules Utility) program that has been developed for the testing of this technology.
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