|
|
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.
|
|
|
STEMLab based data acquisition system
Pavlík, Radim ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
Thesis deals with design of acquisition system, working on developing platform STEMLab (Red Pitaya). Goal is possibility of monitoring analog signals with adjustable sampling frequency and length of acquisition. Software was created for both controlling part (Python application) and for platform itself (embedded C, Python) using the appropriate FPGA-HW design (HDL). Thesis describe how to work with platform ecosystem, control and behaviour of aplications created during the proces of getting acquainted with the platform and options how aplications could be created.
|
|
|
SIMULATION AND IMPLEMENTATION ANALYSIS OF THE AUTOSYNCHRONOUS SUBSYSTEMS IN VLSI DEVICE
Kováč, Michal ; Kostka,, František (referee) ; Jalovecký, Rudolf (referee) ; Kolouch, Jaromír (advisor)
This thesis focuses on problem-solution analysis of synchronous digital circuits; the results of which are autosynchronous circuit design methodology, timing parameter definitions based on simulation models and constraint settings. The RTL transformation of the synchronous state machine in VHDL language to an autosynchronous state machine was created with minimal modifications for the simple design of these circuits. Following this, a comparison of the transformed state machines with their synchronous originals in parameters such as chip area, current consumption and timing specification domain is introduced. The summation of this thesis displays a theoretical comparison of several types of synchronization (synchronous, autosynchronous, fundamental asynchronous, EAIC, Bundled-data, Dual-rail) which are presented on the single state machine example with the same technology parameters.
|
|
|
Geodetic Deformation Measurements of "Gagarin" Bridge.
Kováč, Michal ; Vitula, Alexej (referee) ; Bureš, Jiří (advisor)
The content of this master´s thesis is a geodetic measuring of movements and deformations of skeleton and underwork of „Gagarin“ railway bridge during the seventh period and processing of the data got. This was done by comparison of the movements according to the fifth and sixth period. The work includes also the calibration of appliance used. The results involve figures of the movements with their graphic interpretation and calibration sheets of the appliance.
|
|
|
Business Plan - Introduction of a New Product on the Market
Hajtmar, Adam ; Kováč, Michal (referee) ; Heralecký, Tomáš (advisor)
The diploma thesis is focused on the elaboration of a business plan for placing a product on the market. It is a robotic device for the maintenance of single-wheel rails. The equipment will be placed on the Czech market by companies that will be newly created for this purpose. The business plan will be based on experience from joint machine research as well as relevant analyzes. The plan is therefore aimed at the company successfully completing its entry into the Czech market.
|
|
|
Technical and economic comparison of usability of different types of cements
Kováč, Michal ; Ťažký, Tomáš (referee) ; Hela, Rudolf (advisor)
This bachelor thesis deals with comparison of properties of different types of cements. The theoretical part is devoted to the distribution of cements, their composition and production. Various properties of cements are detected and compared in the practical part. Furthermore, concrete formulas are created which are also mixed and tested. Finally, the proposed area for the test cements and economic evaluation per 1 m3 of concrete mix.
|
|
|
Stereometric LED display
Kováč, Michal ; Macháň, Ladislav (referee) ; Bohrn, Marek (advisor)
The bachelor thesis deals with the design of stereometric display made of the mesh of RGB LED arranged to the matrix of 8x8x8. The thesis copes with the options of diodes’ arrangement according to minimization of number of leads as well as building process of desired mesh. The device is controlled by FPGA circuit on the development board Spartan-3 Starter Kit and control circuit is described in the thesis. The information about displayed text and animations are transmitted into the circuit from computer through USB interface. The display is created, apart from Spartan-3 Starter Kit, by two connected boards which design is also described in the thesis. The first one presents the stereometric display itself with essentials components and the second one provides communication with the computer.
|
|
|
System for Serial Communication Monitoring
Perný, Jan ; Kováč, Michal (referee) ; Kolouch, Jaromír (advisor)
There is a need for a serial communication testing tool when software or hardware developers have to solve serial communication problems. This tool must accurately catch and record the whole communication. Some type of timestamps in the record is necessary for future analysis. This diploma thesis deals with programming a serial communication monitoring equipment software with the possibility of the insertion of timestamps. Possible timestamps types and inserting methods are also discussed. The programmed monitoring software for the FOX Board hardware platform is able to catch and record the serial communication at RS232 ports and add timestamps to the record in accordance to three independent rules. The record is saved to a standard USB flash drive.
|
|
|
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.
|
|
|
Algorithms for analysis and processing of RFID signals in FPGA
Harvánek, Michal ; Kováč, Michal (referee) ; Derbek, Vojtěch (advisor)
The result of this thesis is the architecture design for a software-defined radio, which is used to analyze the signal emitted by RFID tags in real time. The aim of this analysis is to measure the frequency characteristics of the RFID tag. The main means for achieving the objective of optimizing signal processing algorithms and reduce the time needed to control the hardware compared to the classical concept of SW radio USRP. It is described how to obtain and display digitally sampled signals using a graphical programming language LabVIEW and subsequent processing of these data in MATLAB. Further described is the skeleton of the proposed solution.
|
guest ::
RSS feed.