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Multiparameter circulating pump driver
Pazour, Zbyněk ; Frýza, Tomáš (referee) ; Kratochvíl, Tomáš (advisor)
This master’s thesis deals with design of the regulation of a circulating pump in a solar system for heating of supply water and design of the regulator for this system. It describes a fundamental principle and layout of a regulated circuit of a heating system. Description of regulation, basic terms, properties and differences between different types of regulation are described in first part of the master’s project. Especially continuous (PID regulator) and discrete (PSD regulator) regulation are presented. Second part of the master’s project is focused on a conceptual design of the circulating pump regulator. The connection system of each part, selection conditions of components and connection scheme of regulator are described. The third section deals with design of controlling algorithm of the regulator. There is a detailed description of libraries and functions in each chapter which were used in programming of PSD regulator algorithm. The regulated system of a solar collector is described at the end of the work. This system is being developed for real testing and setting of regulator.
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Doppler's sensor beat freqeuncy proccessing
Dušek, Martin ; Macho, Miloslav (referee) ; Fuchs, Michal (advisor)
This work is engaged in ways of objects speed measuring mainly helped by Doppler Effect. The sensor HB410 is described in this work and its possible elaboration output heterodyne analog signal. The calculation of objects speed is deduced from frequency of heterodyne signal. In this work is projected circuit solution for elaboration of analog signal and its digitalization. Available types and nature of microcontrollers which are elaborating digital signal and communicating with PC are summarized in this work. In the last chapter is described microcontroller's driving software and PC software for speed measure.
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Device control based on touch-sensitive capacitance-sensing circuits
Matula, Rastislav ; Kubánek, David (referee) ; Hanák, Pavel (advisor)
The primary objective of this master’s thesis is to discuss a design and development of proximity touch control panel, which contains two simulated buttons and one rotary slider simulating functions of the potentiometer using specialized sensor controllers. The first part is describing functions and different technologies used to create touch sensors. It also introduces its usage in practice, advantages and disadvantages of different technologies which provides the readers with basic theoretical knowledge and introduction into the touch sensors. The second part as follows describes the definition of Integrated Circuits MPR083 and MPR084, outline of the features and methods of their functions. Displays internal connection of these circuits and describes forms of the serial communication with microcontroller connected to I2C bus. In these part there are in details described individual internal registers of these Integrated Circuits and theirs typical setups. It shows how it is possible to use the external interrupts and examples of their practical application. In the last chapter of these thesis is described the layout of the individual modules and construction of the whole designed device. The work is introducing two different concepts of programming the microcontrollers and consequently also construction of the appropriate ISP and JTAG programmers. It also introduces construction of the display units for visual feedback with the user and approach of the communication for the control LED matrix and graphical LCD display. The main part of this thesis is the construction of the control circuit, which includes key part, microcontroller ATmega16. It also presents the description of the program written in development environment AVR Studio in programming language C and his specific functions. In conclusion of the thesis are listed real measured behavior of the communication on I2C bus and their description.
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Automatic switch control unit
Zlý, Marián ; Uher, Miroslav (referee) ; Havlíková, Marie (advisor)
The main topic of this Master's Thesis is design and implementation of automatic range switch AC/DC Transfer Standart Fluke 792A. In the first part is introduce and description of character and the parameters AC/DC trasfer Standart Fluke 792A and design of the Automatic range switch for this equipment. In the next part is introduce design and description of realize automatic switch control unit it has comunication faculty witch PC over GPIB bus. In the finish part is show of the theoretic description for GPIB bus and her realization with helped microcontroller Atmega16.
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Security system with mobile phone communication
Ulbrich, Jakub ; Holek, Radovan (referee) ; Macho, Tomáš (advisor)
This thesis deals with the question of electronic security systems. In the forepart are described electronic security system components such as keyboards, detectors, alarm devices etc. Various methods of security or de-security of properties, trespassing and other events detection methods, and ways of alarm calling are described there too. The next part of the master’s thesis focuses on the construction of an alarm system which is designed for security of a common-size flat with one entry. The system manages to control up to four movement detectors. The operation of the system is handled by a 16 button keyboard, and easy orientation is provided thanks to a liquid crystal display. The alarm is signaled by an indoor alert siren, however, other alarm announcing devices with an input matched for the log. 0 or log. 1 reception can be connected too. The system contains communication equipment (mobile phone) which signals alarm at a distance to the three telephone numbers. User can use a distance control by text message to unlock system or to determine its status. The system is controlled by the microcontroller AVR ATmega16, the product of Atmel company. A brief description of all components of the electronic alarm system is included in this work.
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Small vehicle motion control
Štark, Zdeněk ; Valach, Soběslav (referee) ; Macho, Tomáš (advisor)
In this thesis, a simple small vehicle powered by differential chassis was projected and constructed. The vehicle is controlled manually with the help of user program on personal computer (PC). The software equipment allows recording trajectory run by the small vehicle and then repeating it automatically. The operation system of the small vehicle is based on microcontroller ATmega16 series. Communication between the microcontroller and PC is carried out through RS232 serial bus. The vehicle has digital compass and five reflex sensors that serve for obstruction detection in the closest vicinity of the vehicle. Power unit of the vehicle consists of seven NiCd cells with the capacity of 500 mAh. Propellant unit is powered directly from NiCd cells. Voltage of 5 V for feeding of the control electronics is gained through the set up clasp source of voltage connected to NiCd cells.
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Communication with external devices by I2C bus
Prax, Jakub ; Šebesta, Jiří (referee) ; Frýza, Tomáš (advisor)
This diploma paper deals with the data bus line I2C and a supportive demonstration tool for the subject Microprocessor technology taught at the Radioelectronics faculty. The data bus line I2C is convenient when short-distance data transmission with restricted spatial possibilities is required but high velocity of data transmission is not necessary. The tool is compiled in such a way that enables it to also perform other tasks apart from those dealing with the I2C data bus line. The data bus line in the tool is utilized for transmission of date, time, temperature, data for the D/A converter, data from and to the EEPROM memory and data to 16 bits expander.
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Mixing unit design and realization
Bielik, Jan ; Lang, Stanislav (referee) ; Marada, Tomáš (advisor)
This bachelor’s thesis deals with design and realization of model mixing unit as artwork of model EDU-mod series. Goal of this work is find out how this model works. Then make design of controlling circuit of mixing unit, realization of this model and programming of microcontroller ATmega. After that try functions of this model with PLC Simatic S7-224XP.
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