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System for Automatic Object Tracking
Kerndl, Michal ; Macháň, Ladislav (referee) ; Šteffan, Pavel (advisor)
There is suggestion of obtaining exact position in this work, based on GPS and GSM modules controlled by PIC microcontroller. Layout of this work is electronic schematic, PCB footprint and theoretical analysis of used modules. The practical part of work is also dealing with software for both microprocessor and web interface. The function prototype will be created and tested in next phases of this project.
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Measurement of temperature on swimming pool water
Moravec, Luboš ; Pavlík, Michal (referee) ; Šteffan, Pavel (advisor)
This bachelor’s thesis deals with measuring the temperature of the pool water, control of heating and transmit the data remotely to a computer or mobile device. Includes description of the measuring device, the function and design of possible implementation. It also explores the issue of measuring sensors, communication with the microcontroller and control of remote communication. Thesis also concern the selection of components, design diagrams, PCB design and structural design of the device. This thesis also includes software that deals with data processing and communications at distance.
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Speleological flashlight
Kaderka, Jakub ; Šteffan, Pavel (referee) ; Levek, Vladimír (advisor)
Existing speleology headlamps are discussed and several improvement are proposed in the beginning of the thesis. A switched hystersis buck LED driver is designed. Part selection process is mentioned with focus on driver efficiency. Li-Ion charger and battery protection circuit is discussed. Final part of the thesis describes construction of working lamp prototype and measurements of its characteristics. The LED driver reaches efficiency of 96 %, the maximal luminous flux is 869 lumens. The automated light regulation based on measuring amount of reflected light was found to be inefficient in a muddy underground.
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LoRa Gateway
Očenášek, Matěj ; Janůš, Tomáš (referee) ; Šteffan, Pavel (advisor)
This diploma thesis deals with the implementation of two LoRaWAN systems and the creation of instructions on how to put these systems into operation. Both systems consist of a end device, an access gateway, a network and application server, and a website to display the data obtained from the end device. The public network "The Things Network" and the local network ChirpStack are used to implement these two systems.
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The design of Audio Amplifier
Schenk, David ; Bohrn, Marek (referee) ; Šteffan, Pavel (advisor)
The theme of my bachelor’s thesis is a design of audio amplifier for the reproduction signal from electric guitars. I decided to combine the advantages of tube preamp with the advantages of digital amplifiers. The work describesthe principle activity of selected involvement, includes the anode voltage filter simulation, analysis and measurement of input and output parameters and thein evaluation. Technical documentation for realization of the amplifier contains printed circuit board.
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Extended memory module for the high-speed camera
Trtílek, Jakub ; Šteffan, Pavel (referee) ; Musil, Vladislav (advisor)
Goal of the diploma thesis is a design of fast memory module and to introduce myself with issues involved in data storage in memory of high speed camera. The work is concerned about two designs adding memory capacity of high speed camera with DDR3 memory modules. For production is selected the more suitable design that is better for commercial purposes. The main objective is to design a schematic with FPGA as a main controller, that will operate data flow from CMOS sensor to superior development board MicroZed. Final design should allow us to sell the high speed camera as a separate unit.
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Educational board for STM processors
Očenášek, Matěj ; Novák, Lukáš (referee) ; Šteffan, Pavel (advisor)
This work deals with design of educational board for STM32 microcontrollers. This educational board contains basic types of peripherals such as OLED display, EEPROM, LED or seven segment displays. The theoretical part focuses on the description of the STM32F303 processor and the Nucleo-64 development board on which the processor is installed. It describes in particular its properties. In the theoretical part, besides the STM32F303 processor, the individual parts of the educational board are described. The practical part deals with the design of the block diagram, the scheme and the design of the printed circuit board.
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The remote control workplace of electrochemical sensors
Cieslar, Jakub ; Šteffan, Pavel (referee) ; Adámek, Martin (advisor)
This master’s thesis deals with the design of automated workplase for measurement with electrochemical sensors. Design and realization of a device, which communicates with computer and which can be controlled via WAN or LAN nets, are the main aims of this work. This thesis describes the process of designing, realization and optimalization of designed preparation adjustment. It also describes created software of a device, driver for service PC and programme of a web client.
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One-way serial laser communication over longer distances
Valent, Adam ; Šteffan, Pavel (referee) ; Háze, Jiří (advisor)
The subject of this thesis is the construction of one-way communication device. This device consists of the transmitter and the receiver, both of which are connected to its respective computer via USB interface. This device allows sending UTF-8 characters or files from one computer to another. Both computers are running a graphical user interface program. The core of a transmitter is a digital signal modulating laser diode. The receiver is made of photovoltaic panel with a resonance circuit and an amplifier. Communication between the electronics and the computer is driven by microcontrollers. Received messages are verified with one of multiple error detection algorithms, which can be selected by user in the utility program.
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