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Power audio amplifier with AC/DC converter
Melša, Vojtěch ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
The aim of this work was to design and construct a simple audio amplifier, which would be based of involvement and components used in switching power sources on the maximum degree (for example from usual ATX sources for computer). The main motivation for development is the existence of many old sources that do not use and big interest of users for the construction of home audio amplifiers for small and medium power. Amplifiers based on switching power sources with greater efficiency and less weight than comparable classic amplifiers (working in classes A, B or AB). Their disadvantage is the complicated design and introduction of distortion and spurious signals to the amplified signal. This work will be described a design of simple amplifier, which will minimize these negative effects. For shortcomings and wrong parameters this proposed involvement will be eventually described and implemented design of amplifier in class D.
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Ultrasonic anemometer
Dvořáček, Michael ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
Work describe principles and problems of the realization ultrasonic anemometer. It's described methods of computation speed wind and its correction. In favor of realization are used ultrasonic transducers and microcontroller ARM Cortex-M3. The work treats PWM signal generating, its analog filtration, amplification and transmitting. On receiving part there are low voltage amplifier and comparator. Developing code is described by flowcharts.
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Microprocessor system IP core generator
Kerber, Rostislav ; Tošovský, Petr (referee) ; Kubíček, Michal (advisor)
This master’s thesis deal’s with VHDL programming language, ISE Webpack design system and PicoBlaze microprocessor. The thesis describes essentials of VHDL programming language and its application. A simple introduction to ISE Webpack design environment is given. The thesis describes common peripherals and the PicoBlaze processor is described too, including its parameters and implementation aspects. Finally the thesis describes IP generator for generating complex FPGA design including Picoblaze processor.
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FPGA based sound card for PC
Štraus, Pavel ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
This project deals with implementation of a first order Sigma–Delta AD converter on the FPGA. This ADC is design for an audio signal processing. ADC is build up partially from digital blocks implemented in FPGA (programmed using VHDL) and from few analog components placed external to FPGA. Output from ADC is PCM signal. Data from ADC is created UDP datagram, which is sent to PC via network connection. Income data are received in created program, which save data to text file. This text file is processing in MATLAB.
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Laboratory Kit for Programmable Logic Demonstration
Svoboda, Stanislav ; Kubíček, Michal (referee) ; Kolouch, Jaromír (advisor)
This bachelor’s project deals with solutions of laboratory kit for teaching of work with CPLD curcuits which are made by company ALTERA. It is also including design of PCB - printed cirucit board and way of their realization. For construction is used circuit CPLD EPM 7064SLC44 made by ALTERA. Whole laboratory kit for Programable Logic Demonstration is designed as individual unit, which is capable to work as individual function. The kit can be amplified by connection of optional peripherals.
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Multifunction display for ground power supply
Kincl, Zdeněk ; Kubíček, Michal (referee) ; Kolka, Zdeněk (advisor)
The aim of this thesis was to design a concept and circuit for multifunction display. This unit is used in ground power supply for preflighting preparation of army helicopters. Multifunction display measures voltages and currents of AC and DC generators, teperatures of cooling air and fuel quantity. Display indicates a operational and fault states of ground power supply. The main element of multifunction display is 32-bit microprocessor from the manufacturer NXP, family ARM7. All information are displaying on graphic vacuum fluorescent display GU256x128.
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Software tester of embedded module communication based on AT commands
Kondr, Aleš ; Prokeš, Aleš (referee) ; Kubíček, Michal (advisor)
The graduation thesis deals with AT commands and the implementation of these in modules of wireless communication. These commands are mainly used for the obtaining and setting of different parameters of such modules. A form of the AT commands and a manner in which these are sent to modules are described. For selected wireless modules, there is a set of AT commands determined together with a brief description of the functions of these. A manner of creation of macroblocks for the TeraTerm program is also mentioned; macroblocks are able to establish communication with the module connected and allow for measurement and testing of communication appliances. This is suitable especially for the automation of such a process. As such a system (program) is not widely known, a thorough description of this system is given together with a description of measuring and testing macroblocks. The last part of the thesis deals with the creation of an application enabling the user to control quickly and easily an inserted appliance. A very detailed description of this application is given. Due to an absence of an advanced graphic interface, such an application has not been created by means of a system of macroblocks for the TeraTerm program, but it has been created in the JAVA programming language.
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Additional LCD Display for Laboratory Kit with a Programmable Device
Pajskr, Jaroslav ; Kubíček, Michal (referee) ; Kolouch, Jaromír (advisor)
The main part of the digital application is its user interface. Users can check the status of the programme or change its state. There are many ways to obtain a suitable interface. During the design stage the simplest interface is chosen that provides the necessary functions. In most cases the interface contains a display. This diploma thesis deals with the design of an extension board to plug in a display to a programmable device, a control algorithm for the display and the design of a simple display interface. There are two ways to design software. The first of them is achieved by the processor PicoBlaze, which contains all the required functions. The second solution is by the state machine written in VHDL language. Both solutions can be used in the same way, but the latter solution is quicker and requires less hardware resources.
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FPGA core for data displaying on computer monitor using VGA port
Pišl, Adam ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
The aim of this project is to perform the study of a driver for controlling computer monitor using VGA port. The driver is based on FPGA which is used to generate VGA signals. The main purpose of the project is to design a hardware core for gate array which can be used as part of some complex FPGA design to provide a comfortable user interface. The project describes the main part of the VGA driver – module for generating control signals and module for displaying text information that is sent from a PC via serial port interface.
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Omnidirectional robot – construction design
Kubíček, Michal ; Abbadi, Ahmad (referee) ; Matoušek, Radomil (advisor)
This bachelor thesis deals with the 3D design chassis holonomic omnidirectional robot. The aim of the work is to design two omnidirectional mobile robots. The first one is the three-wheel omnidirectional robot with spring-loaded platform. The second one is the special balancing robot, where the motion wheel is the ball and the robot ride over them. The platform was designed for using with Maxon MCD EPOS motors. The simplest structure of mobile robot was chosen due to simplification of manufacture process. The robot platform design was realized by means of SolidWorks software.
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