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Universal monitoring and diagnostic probe for serial communication
Dvořák, Ondřej ; Povalač, Aleš (referee) ; Záplata, Filip (advisor)
The thesis deals with design of a device for communication analysis in standardized serial interfaces, with differing parameters. The goal of the thesis is a complete design of a device including wiring diagrams, PCB, get PCB alive and design complete device firmware. The device will be able to process and analyze data on selected interfaces. The user controls the device with the use of USB interface, connecting the device with a PC or other computing devices. Communication is done by a simple protocol in ASCII, its design is included in this thesis. The device can analyze errors in the interface and inform the user about them. Firmware should be flexible, to allow the addition of more interfaces and protocols.
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Software Defined Home Automation
Stupka, Dominik ; Brejl,, Milan (referee) ; Povalač, Aleš (advisor)
This thesis is about development and construction of systems for building automation. At the beginning it´s focused on usage of building automation. Short describe used topology of installation and available systems on the market. The second chapter is about designing of hardware’s elements systems. Then it’s describing control unit Raspberry Pi 3, microprocessors for communication and slave modules. For my thesis I am also engaged in interface communication and designing of I/O systems. The third and fourth chapter is describing software equipment’s of the system. The parts of microprocessor firmware and manner of control logic creating and visualization in control unit module are described in details. Last chapter contains the description of construction of testing module and measuring of system parameters.
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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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Laboratory waveform generator based on DDS
Kret, Tomáš ; Povalač, Aleš (referee) ; Šebesta, Jiří (advisor)
The project concerns about design of function generator based on direct digital synthesis, its software and hardware realisation. It solves generating functions depended on time like sine, triangle and square with variable duty cycle, burst and other functions of frequency sweep, FM and PWM modulation. Next goal is to display user interface on graphic LCD display and to control microcontroler pheripheries of AVR.
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Design and implementation of educational CubeSat
Košút, Martin ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
This thesis describes the design of a CubeSat with a 1U (10x10x10 cm) size, which will be used in laboratory tasks. It includes mechanical construction printed on a 3D printer with six photovoltaic cells, mounted on the top. Cells will produce electricity to power all systems and to charge the onboard NiMH batteries to make the CubeSat independent of other sources of energy. The proposed design of an electrical power supply system and an onboard computer combined with a communication system is based on off the shelf components. The two-way wireless communication link between computer and a CubeSat is realized thanks to the ground station, which is also part of a design. Students will make other systems, which will communicate with the built in onboard computer via internal RS 485 communication bus. Internal EEPROM memory is used to save measured values. Modularity, possible future expandability, and easy repair in case of any failure were the key optimization parameters of the design.
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Bluetooth Vibrating Ringer
Dočekal, David ; Dušek, Martin (referee) ; Povalač, Aleš (advisor)
This thesis is focused on the implementation of Bluetooth communication between a mobile phone and an external device. The first chapter focuses on Bluetooth technology in general. It describes the interface, device classes according to RF power, Bluetooth versions, security and pairing options. The second chapter of the Bachelor’s thesis deals with the Bluetooth module called HC-05. It describes the basic features and practical, module usage. It also shows the concept of the Bluetooth unit and describes the adjusting of certain parameters of the HC-05 module using the AT commands. The third chapter summarizes the deign and implementation of the device. Software and firmware development is overviewed in the fourth chapter. The testing and measurement results of the complete device are presented in the last part of this thesis.
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Automated garden system for outdoors
Stupka, Tomáš ; Povalač, Aleš (referee) ; Frýza, Tomáš (advisor)
The aim of this semester work is to design and implement an automated irrigation system for use in a family house based on the Raspberry Pi platform and AVR processors with the possibility of automatic adaptation to outdoor temperature and humidity conditions. The design also includes a web interface using the NodeRED interface for manual control and monitoring of data collected from individual wireless sensor modules
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Bluetooth® Low Energy Vehicle Keyless Entry
Šterc, Filip ; Povalač, Aleš (referee) ; Frýza, Tomáš (advisor)
Tato práce se zabývá návrhem demonstračního kitu bezlíčového přístupu pro vozidla s využitím nejnovějších integrovaných obvodů Bluetooth Low Energy a budičů automobilové sběrnice od společnosti ON Semiconductor. Aplikace umožňuje ruční i automatické odemykání dveří vozidla ze vzdáleného klíče realizovaného chytrým telefonem. Řešení se zabývá detekcí vzdálenosti vzdáleného klíče, bezpečností BLE spojení a komunikací přes automobilovou sběrnici LIN mezi moduly demonstračního kitu.
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