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Advanced waterproof flashlight for extreme condition
Šerík, Martin ; Kubíček, Michal (referee) ; Kincl, Zdeněk (advisor)
The work is focusing on the search for available solutions concerning the choice of components for advanced waterproof flashlight for extreme conditions and on building this device. After comparing the individual parameters the following components were selected: as a source of energy - four AAA batteries eneloop distributed by Sanyo, high-brightness LED CREE XP-G and microcontroller ATtiny24 distributed by Atmel. The user interaction is realized by support of capacitive touch buttons and the charging of the lighting device is wireless. The light is placed on the handlebar using a specialized holder.
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Controler for brushless motors
Zdařil, Tomáš ; Bradáč, Zdeněk (referee) ; Kincl, Zdeněk (advisor)
The goal of the thesis was to design and create one-way speed controler for brushless DC motors, that is used in air modeling. The circuit is controlled by the Atmel AVR. As power unit for motor is used Li–pol accumulator. The controller is equipped with BEC to power the receiver and allows monitoring of current consumption and voltage on the accumulator. Measured data can be upload to a PC where they can be displayed by RegulatorPC in graphical form.
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Frequency filters controlled via microprocessors
Bronec, David ; Kincl, Zdeněk (referee) ; Biolková, Viera (advisor)
This thesis is focused on the microprocessor-controlled frequency filter project. The main goal of the thesis is to present basic terms and principles of frequency filters and active frequency filters for cascading synthesis. Furthermore, the work contains information on digital potentiometers. The thesis includes circuit simulations and a project of connecting with a printed circuit board. The last chapter contains the results of the measurements.
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DC motor driver
Slotová, Petra ; Kincl, Zdeněk (referee) ; Kolka, Zdeněk (advisor)
The bachelor's thesis is dedicated to design of a DC motor driver 28V/1A for use in an aircraft on-board network. The design takes into account the RTCA standard. The device is designed as an H-bridge with a block for power, logic and protection circuits. Subsequently, the thesis is devoted to the design of the PCB, the programming of the software for controlling the motor and the revival of the device itself.
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Smart digital door lock system using IoT networks
Vitula, Marek ; Kincl, Zdeněk (referee) ; Záplata, Filip (advisor)
This master thesis describes the design of a battery-powered smart lock using IoT networks and NFC technology for user authentication. The first part of the thesis describes the individual components to be used for the device design and also deals with the design of matching circuits and the antenna for the NFC. The following part of the thesis describes the design of the hardware, particularly the design of the printed circuit board. The third part describes the firmware and the final part of the thesis is dedicated to the security analysis.
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Controler for brushless motors
Zdařil, Tomáš ; Bradáč, Zdeněk (referee) ; Kincl, Zdeněk (advisor)
The goal of the thesis was to design and create one-way speed controler for brushless DC motors, that is used in air modeling. The function is based on the without sensors control method and circuit is controlled by the Atmel AVR. Power unit for motor is used Li – pol accumulator. The controller is equipped with a BEC to power the receiver and allows monitoring current and voltage on the accumulator. The measured data can be uploaded to a PC.
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HVAC unit for optical head
Janošík, Tomáš ; Šotner, Roman (referee) ; Kincl, Zdeněk (advisor)
This thesis deals with the design of a HVAC unit for temperature regulation inside an optical head. The unit is completed by functions which optimize its reliability such as checking of fan, heating element, monitoring a supply voltage and saving operating information into the memory. The device communicates with PC via serial interface RS-485. There is also described the possibility to switch the unit to a manual mode, in which the temperature interval is setting by a potentiometers. Solution of this thesis is function prototype.
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Switching LED Driver Using Buck-Boost Structure
Šmerda, Jaroslav ; Kincl, Zdeněk (referee) ; Kubíček, Michal (advisor)
Control and driving high luminous LED is an issue that is dealt, because the technology of LED have grew in recent years. The power of these diodes is supplied almost always with DC converters. These converters operate on the principle of switching power supply, and they are devices with high efficiency. Because of the high efficiency of converters in combination with a high luminous LED leads to very efficient energy processing to light. This project describes how to select the right converter for a specific application of LEDs. There are described basic converter topologies, descriptions of their activities and LED wiring example to the converter.
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Communication protocols for Free-Space Optical links
Šedo, Ondrej ; Kincl, Zdeněk (referee) ; Kolka, Zdeněk (advisor)
This master’s thesis is focused on behaviour of the TCP/IP protocol on free-space optical link which is affected by the effect of atmospheric turbulence. This causes fluctuation of the received optical power and therefor bit error rate changes. In the simulation model short-time bit error rate is calculated from random generated received optical signal and then used in time-domain analysis of the OMNeT++ network simulator. A buffer in transmitter is designed based on simulation results. It pauses the data transmitting in cases of FSO link outage. This method is then implemented into FPGA device.
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