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Automatic DC Motor Stop Detection
Arm, Jakub
In this article, the automatic motor stop because of a mechanical obstacle or the end limit is described and implemented. Theory about the motor current parameters evaluation and the motor current measurements is presented. As case-study, the created air-conditioning using ATmega8 and MC33887 is described where the motor stop is implemented and tested. A new algorithm that detects the motion state automatically according to the motor current measurement with no need of the motor parameters is proposed and tested.
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Implementation of USB/LAN/WIFI interface
Voneš, Jaroslav ; Roubal, Zdeněk (referee) ; Steinbauer, Miloslav (advisor)
This bachelor thesis goes into implementing the most modern communication interfaces USB/LAN/WIFI to control the computer itself and also the incubator via a Web interface. The term describes the overall solution to the management of the incubator for using microcontroller ATmega8 with the possibility of the exchange of communication interfaces. For the USB converter was used the circuit FTDI FT232 BM company, from LANTRONIX Ethernet was used for Converter converter XPORT and eventually to communicate the WIFI was elected circuit ESP 8266
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Laser Target for Simulating Shooting Sport
Poloch, Martin
This work deals with complete design of a system for simulating shooting sport. Key aspects of the design are similarity with shooting from ordinary mechanical weapons, multifunctionality and low costs. The core of the simulation is a laser transmitter in the weapon and a photosensitive receiver in the target. The final version of the system is controlled by a group of microcontrollers and provides several types of feedback. For example lighting the place that has been hit with LED, sound signals, displaying shooting results, or evaluating them with a computer.
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Intelligent control of train track model
Prokš, Jiří ; Bohrn, Marek (referee) ; Pavlík, Michal (advisor)
The aim of this thesis is design of elements intelligent control of train track model. The first part of the thesis is focused on principle of data communication. It explains principle data communication, modulation and interference. Practical part of the thesis is focused on designe of communication. Data communication is realized by infrared radiation. Practical part describes the funcional parts of system and their design, such as: control part, receiver and transmitter, switching elements and h-bridge. At the and of this thesis is described of control software. Properties of elements specialize for model of railway are considered in design. Summary of the design’s parameters, use, advantages and disadvantages are described at the end of this thesis.
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Ultrasonic distance measurement
Klich, Michal ; Krajsa, Ondřej (referee) ; Lattenberg, Ivo (advisor)
The aim of this bachelor thesis is the design and manufacture of a controlling program of equipment for distance measurement using ultrasonic sensors. It focuses on a detailed description of the whole design from the basic properties of the components to the creation of schemes and PCB design. It subsequently describes in detail the development of controlling software of the equipment. The work briefly describes the most important parts of the code. It summarizes all theoretical and practical knowledge gained during the creation of the whole design, it explains the principles of the functions and works of individual parts and it suggests the best possible options of connection of the whole equipment. It also suggests the best possible variants of the entire circuit. The bachelor thesis also describes the microprocesor AVR ATmega8 from the Atmel Corporaton, which controls the entire device, as well as EEPROM memory chip 24LCXXX, SRF05 ultrasonic sensor and communication with the PC via USB using a microchip FT230XS-R.
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Implementation of USB/LAN/WIFI interface
Voneš, Jaroslav ; Roubal, Zdeněk (referee) ; Steinbauer, Miloslav (advisor)
This semester the project goes into implementing the most modern communication interfaces USB/LAN/WIFI to control the computer itself and also the incubator via a Web interface. The term describes the overall solution to the management of the incubator for using microcontroller ATmega8 with the possibility of the exchange of communication interfaces. For the USB converter was used the circuit FTDI FT232 BM company, from LANTRONIX Ethernet was used for Converter converter XPORT and eventually to communicate the WIFI was elected circuit ESP 8266
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Realization of differential power analysis
Marek, Pavel ; Dzurenda, Petr (referee) ; Martinásek, Zdeněk (advisor)
Nowadays, it is not enough to pay attention to encryption algorithm security from the mathematical aspect only. It is also necessary to pay attention to the implementation of encryption algorithm, because encryption devices can show plenty of information about implemented encryption via undesirable communication. This bachelor thesis deals with side channels issues (especially power side channel) and their use to obtain the secret key of AES encryption algorithm. For this purpose there are three operations realized in this thesis. At first, there is experimental workplace designed, which provides automatic saving of waveforms of encryption. Then there is a simple and differential power analysis of these waveforms performed. All parts are theoretically described in individual chapters. After theoretical description there is the practical part, which describes a proper realization of all tasks.
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Autonomous mobile robot
Pijáček, Ondřej ; Kopečný, Lukáš (referee) ; Jílek, Tomáš (advisor)
This thesis describes the design and implementation of chassis for autonomous wheeled mobile robot along with a proposal for a suitable control system. To move the robot was necessary to create individual modules for measuring environmental data, its subsequent processing and power management. For the entire robot system capable of rapid interaction, certain tasks are separated and controlled by its own microcontroller. For communication between the modules were chosen and designed SPI bus communication protocol. Thus assembled chassis then communicates over a serial line with higher system from which acquires data indicative of a subsequent procedure. The result is a controlling system communicating between its parts. Part of the design is also defined communications protocol that transmits data on the one hand and also used for fault diagnosis when sending information. Furthermore, there are patterns and specific methods for controlling the individual modules. In conclusion, the thesis described the proposed testing the robot in real conditions, along with the measurement results obtained in the task of autonomous driving.
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FLATcon system – gas detection system with RF communication
Chytil, Jiří ; Kaczmarczyk, Václav (referee) ; Bradáč, Zdeněk (advisor)
The theme of this thesis is to design a wireless carbon monoxide leak detector for smart home system FLATcon. This thesis deals mainly with practical design of the device extended with temperature measuring and output to boiler operation, the conception of two-way wireless Master - Slave communication for system FLATcon and design a central unit for FLATcon to demonstrate the functionality using the single board computer Raspberry PI. The thesis also includes a theoretical introduction into the measuring gas concentration and discusses the design of used semiconductor sensor MQ-7.
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Digitally controlled power supply
Stupka, Dominik ; Drexler, Petr (referee) ; Szabó, Zoltán (advisor)
This document describes design of the laboratory power supply with digital control. Power control consists from a control section which handles communication between the modules and the power section.Into the power section is integrated switching and linear regulator. The designed power supply contains two such modules. To control are used microcontrollers from Atmel. Source parameters are 2 x 30 V / 0 – 3 A. During the construction we have to emphasis on the accuracy of regulation the output values and the modularity of the solution.
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