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Localization of RF transmiter
Mikuláštík, Jiří ; Burian, František (referee) ; Kopečný, Lukáš (advisor)
The thesis deal with possibility of localization of avalanche victims. Main focus is for RF avalanche beacons. The major objects of this thesis are design and construction of this device. A large part of thesis describes design of avalanche beacon and particular steps of realization. The design take into account the compatibility with commercial beacons. The paramters of designed device are verified by testing and measurement.
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Wireless communication module in 868 MHz band with MESH network support
Uhlíř, Marcel ; Fedra, Zbyněk (referee) ; Povalač, Aleš (advisor)
This thesis deals with design of a wireless communication module that allows communication in the unlicensed band at the frequency of 868 MHz. The designed module can be easily implemented in various types of embedded devices using SMT technology. This communication module consists of a low-power radio frequency transmitted, balancing element, impedance matching, radio antenna and electromagnetic shielding. Communication between the embedded device and the wireless communication module is realized using the SPI interface and configurable GPIOs. Part of this work is the proposed firmware library, which operates the wireless communication module and allows communication in peer-to-peer mode and in MESH network mode. A procedure for its creation and management is created as part of the MESH network. The use of this work is directed to the field of control and sensor systems with application in automation.
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Safety communicator
Kuřímský, Lukáš ; Boušek, Jaroslav (referee) ; Šteffan, Pavel (advisor)
The bachelors thesis deals with the draft of a safety communicator and the prototype that is able to transmit a rescue signal from areas that are inaccessible or not covered with GSM signal. The project offers a detailed description of the functions of the individual components necessary for processing and transmitting of the signal. Furthermore, it discusses the methods of transmitting and focuses particularly on one of the forms of amplitude modulation – amplitude shift keying that uses a self-healing protocol. It partly deals also with the process of choosing and designing the test antenna and its tuning.
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Wireless communication module in 868 MHz band with MESH network support
Uhlíř, Marcel ; Fedra, Zbyněk (referee) ; Povalač, Aleš (advisor)
This thesis deals with design of a wireless communication module that allows communication in the unlicensed band at the frequency of 868 MHz. The designed module can be easily implemented in various types of embedded devices using SMT technology. This communication module consists of a low-power radio frequency transmitted, balancing element, impedance matching, radio antenna and electromagnetic shielding. Communication between the embedded device and the wireless communication module is realized using the SPI interface and configurable GPIOs. Part of this work is the proposed firmware library, which operates the wireless communication module and allows communication in peer-to-peer mode and in MESH network mode. A procedure for its creation and management is created as part of the MESH network. The use of this work is directed to the field of control and sensor systems with application in automation.
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|
|
Safety communicator
Kuřímský, Lukáš ; Boušek, Jaroslav (referee) ; Šteffan, Pavel (advisor)
The bachelors thesis deals with the draft of a safety communicator and the prototype that is able to transmit a rescue signal from areas that are inaccessible or not covered with GSM signal. The project offers a detailed description of the functions of the individual components necessary for processing and transmitting of the signal. Furthermore, it discusses the methods of transmitting and focuses particularly on one of the forms of amplitude modulation – amplitude shift keying that uses a self-healing protocol. It partly deals also with the process of choosing and designing the test antenna and its tuning.
|
|
|
Localization of RF transmiter
Mikuláštík, Jiří ; Burian, František (referee) ; Kopečný, Lukáš (advisor)
The thesis deal with possibility of localization of avalanche victims. Main focus is for RF avalanche beacons. The major objects of this thesis are design and construction of this device. A large part of thesis describes design of avalanche beacon and particular steps of realization. The design take into account the compatibility with commercial beacons. The paramters of designed device are verified by testing and measurement.
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