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Led matrix 8x64
Marek, Michal ; Macháň, Ladislav (referee) ; Šteffan, Pavel (advisor)
The bachelor thesis describes what is a LED matrix and how to control them. The function of the control circuits for the LED matrixes, the function of the current controller and microcontroller programming method are delineates in the project. These include microcontroller programming via universal serial bus, changing source code parameters via local ethernet network with the ethernet connect module, using standard peripheral buses for serial transmissions and the ways of controlling LEDs using relevant libraries. Objective is to introduce a solution for LED controlling using the Windows software application and propose complex assembly includes all the necessary blocks, which provides simple operating for new users.
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Design of low-voltage operational amplifier
Sysel, Jan ; Šteffan, Pavel (referee) ; Khateb, Fabian (advisor)
This work deals with the design of operational amplifier with extremely low supply voltage and low power consumption. In the theoretical part is presented theory dealing with the structure and design of operational amplifier. In the following part are desribed design methods suitable for realization of low-voltage circuits. In the next part were designed two operational amplifiers using low-voltage design methods. Properties of these operational amplifiers were then tested by simulations.
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The construction of wireless alarm system
Brudný, Tomáš ; Kadlec, Jaroslav (referee) ; Šteffan, Pavel (advisor)
The object of this project was to develop a security device, which would consist of several detectors and one central unit. The central unit is communicating with authorized detectors wire-less with using the high-frequency modules IQRF from Microrisc. Central unit is thanks USB interface, small size and by using PC easy configurable. Designed detectors are provided with a Li-ion accumulator, which can by charge by integrated solar cells. The detector also includes input interface, which can by use to expand the detector of another kind of sensing element.
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Home automatization system based on Raspberry Pi
Lokajíček, Lukáš ; Šteffan, Pavel (referee) ; Pavlík, Michal (advisor)
The master’s thesis deals with the design of the Smart Home System (SHS), which takes advantage of the 'Raspberry Pi' single-board computer. Background research about the theoretical concept of SHS is carried out, which reveals weaknesses in that field. The aim of the thesis is elimination these weak points and takes into account reliability, extensibility and low acquisition price. The practical part is introduced by design of particular modules, which include both hardware design and software. The project is concluded with integration all components into the single functional universal system together with the extensibility presentation.
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Biodynamic lighting
Andruška, Martin ; Skácel, Josef (referee) ; Šteffan, Pavel (advisor)
This master thesis is focused on designing a concept of a biodynamic tunable white luminaire for the interior capable of producing user defined output or simulating the conditions of natural exterior lighting. The thesis describes the physiological basis of human sensitivity to lighting and the consequences, as well as the principles of semiconductor radiation sources. Finally, it deals with methods of sensing the lighting conditions and describing the design and functions of the system elements and final implementation.
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Induction loop amplifier
Flek, Petr ; Šteffan, Pavel (referee) ; Kledrowetz, Vilém (advisor)
The goal of this master thesis was to study the theory and to realize an induction loop for railway rolling vehicles, to design and manufacture a functioning prototype of electronic amplifier, which carries out all the requirements. This thesis includes detailed information about the induction loop system, its position and performance, following with the design of the amplifier, execution of the design and with the conclusion of measured parameters for the accomplishment of the required parameters.
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Irrigation automatic machine
Krištof, Martin ; Musil, Vladislav (referee) ; Šteffan, Pavel (advisor)
The aim of the bachelor's thesis is to design an irrigation automat. The bachelor's thesis describes a concept realized with the microcontroller TM4C1294. In the theoretical part of the bachelor's thesis, the fundamental terms are explained and irrigation automats are described. The practical part includes the design of hardware and software. The proposed solution allows irrigation using different methods and connect moisture soil sensor, air humidity and temperature sensor and water flow sensor.
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Precision laboratory power supply
Bartoš, Dalibor ; Šteffan, Pavel (referee) ; Levek, Vladimír (advisor)
The subject of this thesis is a design of a precision dual channel laboratory power supply with output voltage range from 0 to 30 V and adjustable current limit up to 1 A. The proposed solution is based on linear regulators and input voltage switching system to minimize power dissipation. Galvanically isolated channels of the power supply share the same microcontroller that processes the user inputs. Microcontroller code allows the calibration of the device or it’s communication with computer. The cover of the device is designed with good cooling performance and 3D printing manufacturing method in mind. The properties of the designed laboratory power supply are verified by the final test measurements.
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The Precise Measurement of Magnetic Azimuth
Junasová, Veronika ; Levek, Vladimír ; Šteffan, Pavel
This article deals with measuring magnetic azimuthusing inertial sensors. It introduces the steps in this process andobstacles that need to be solved in order to achieve more preciseresults. The magnetic azimuth can be determined using onemagnetometer; however, the precision in such measurement islimited. Therefore, this article also introduces measurement ofrelative azimuth acquired by the gyroscope. The essential part ofprecise measurement is the calibration of the mentioned inertialsensors, which is described in detail. The process of calibration issupported with equations, graphs, and tables. The measurementitself consists of an output from the magnetometer. The relativeazimuth acquired from the gyroscope is then combined using acomplementary digital filter with magnetic azimuth from moreaccurate magnetometer. The final results show the improvementobtained with the presented method. The article also containsinformation on a compact device designed for simple calibrationand measurement with the mentioned sensors.
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