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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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MPPT regulator of photovoltaic power plant with smart battery management
Uhlíř, Marcel ; Boušek, Jaroslav (referee) ; Háze, Jiří (advisor)
The thesis deals with design of photovoltaic controller using MPPT technology based on Perturb & Observe algorithm extended by fuzzy logic processing. The converted energy is stored in a battery system with an optional voltage 12 V or 24 V. The battery system is provided by intelligent battery management, which allows to use a voltage balancer and desulphation. The whole system can be powered by external power supply, which is used to charge the batteries if there is the absence of photovoltaic energy. The device contains 12 V and 5 V outputs for connecting external devices. Through USB and Ethernet interfaces, it communicates with utility software that allows user to configure controller parameters and display battery system values. The purpose of this work is directed to the field of portable island systems for use in residential vans or caravans.
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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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MPPT regulator of photovoltaic power plant with smart battery management
Uhlíř, Marcel ; Boušek, Jaroslav (referee) ; Háze, Jiří (advisor)
The thesis deals with design of photovoltaic controller using MPPT technology based on Perturb & Observe algorithm extended by fuzzy logic processing. The converted energy is stored in a battery system with an optional voltage 12 V or 24 V. The battery system is provided by intelligent battery management, which allows to use a voltage balancer and desulphation. The whole system can be powered by external power supply, which is used to charge the batteries if there is the absence of photovoltaic energy. The device contains 12 V and 5 V outputs for connecting external devices. Through USB and Ethernet interfaces, it communicates with utility software that allows user to configure controller parameters and display battery system values. The purpose of this work is directed to the field of portable island systems for use in residential vans or caravans.
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