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Filters with current mirrors
Kotlán, Petr ; Herencsár, Norbert (referee) ; Lattenberg, Ivo (advisor)
A second-order frequency-selection filters with current amplifier design is shortly shown in this bachelor's thesis. An autonomous circuit was modified to be conform with all rules of functionality of filters. A few version of autonomous circuit are shown i this text. The circuits were simulated by a program Microcap expecially transient and AC analysis. The current amplifier was replaced by a current mirror or more precisely by a current inverter. A direct-current and his relations to suplied harmonic signal were investigated. A deformation of a harmonic signal is unwanted. This deformation is ussualy created by the transistors in nonlinear mode. This current have to have special ratio to the alternating-current. A sixth-order filter was created by cascade connection of three second-order blocks. This more intricated circuit is correct. A correct rate of characteristic due for low-pass, high-pass and band-pass was shown thanks AC analysis.
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Techniques for parallel computing
Vodák, René ; Hasmanda, Martin (referee) ; Lattenberg, Ivo (advisor)
The text of this thesis deals with techniques of parallel processing calculations. It is an analysis of the most important libraries for parallelization including libraries for parallelization on GPU graphics cards and computing speed by comparing these libraries in Visual Studio 2010 based on a simple application searching primes on three different computer hardware configurations. With OpenCL library, that achieved the best result, there are formed two applications – an improved program for searching prime numbers using the sieve of Eratosthenes and a program for calculating the integral with the trapezoidal rule.
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Temperature measurement with data transfer via WLAN
Müller, David ; Číž, Radim (referee) ; Lattenberg, Ivo (advisor)
This diploma thesis deals with the design of temperature sensor and display units, which communicate via a WLAN network. The theoretical part provides an overview of various methods of temperature measurement including several specific types of temperature sensors, and also introduces the WLAN standard as well as TCP and UDP protocols. The design solution is focuses first on the system architecture and design of the communication protocol, followed by the implementation of both types of equipment, starting with selection of components, through design diagrams and printed circuit board patterns, up to production and commissioning. The following parts of this thesis deal with the design of programs for the controlling microcontroller units of both units and the configuration application for PC.
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DNS protocol client with a graphical interface suitable for lecturing
Sousedík, Tomáš ; Lattenberg, Ivo (referee) ; Jeřábek, Jan (advisor)
This thesis describes DNS protocol and messages it uses to obtain desired information. The protocol is described from its creation and occasions that caused the creation of the protocol. Later on are discussed multicast capabilities of name resolution this section is focused on mDNS and LLMNR. In the second part is detailed description of the structure of the messages and their useage. In the last part is described the design of the application, which was based on the specifications listed in RFCs. One chapter is devoted to a detailed description of the application and its individual parts. A large part is devoted to the testing. There are also described problems that occurred during application development and their solutions.
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Design and implementation of the LCD display drivers for Raspberry Pi
Cepl, Miroslav ; Lattenberg, Ivo (referee) ; Krajsa, Ondřej (advisor)
The aim of the course work is to design and implement a driver for touchscreen LCD display. The premise of the connection the display to the microcontroller using the I2C bus and use MCP23017 circuits. Raspberry Pi B + will be used for communication with circuits MCP23017 via I2C bus. Display TFT_320QVT will be connected to the outputs of extension circuits MCP23017. Part of the display complete is also a touchscreen with XPT2046 controller. Raspberry Pi runs on Raspbian system based on the Debian Linux distribution. The driver will serve to communicate and display information on the screen. The complete will be useable for applications such as selecting settings and show main information on the display.
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High availability Microsoft Sql Server
Pyszko, Pavel ; Lattenberg, Ivo (referee) ; Zeman, Václav (advisor)
The thesis contains a complete theoretical overview of high availability technologies in Microsoft SQL Server. For each technology, guidance is provided for the deployment of technologies. Technologies are analyzed from a security perspective, they are determined advantages and disadvantages of using technology in practice and is determined the optimal variant of use of the technology. High availability technology are compared with each other and is given the availability of individual technologies in versions of MS SQL Server. The thesis contains three scenarios with practical examples of using technology for high availability in practice. It provides an analysis of high-availability features in Oracle and are subsequently compared high availability features in Oracle environments with high availability technology in MS SQL Server.
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USB controlled voltage and current source
Pytela, Ondřej ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
This diploma thesis is focused on complete construction of lab source which is controlled and powered by USB in personal computer. Different types of possible solutions are mentioned and finally one of them has been picked up as a best choice, which is developed in the rest of this thesis. Besides hardware construction there is also shown creation of main program for PIC18F14K50 microcontroller and main application that provides controlling of USB source via personal computer.
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Distance measurement using sensors of mobile phone
Hubr, Ivo ; Endrle, Pavel (referee) ; Lattenberg, Ivo (advisor)
Distance and the associated parameters can be measured by specific sensors mobile device. Introduction The work focuses on the description of the sensors and the effects on their accuracy. To measure the distance, there is a number of good practices, which were described and demonstrated the application implemented source code for the Android platform. The project works with a total of three sensors, namely accelerometer, magnetometer and camera. The main objective of this work is the definition and application of methods for measuring distance using the appropriate sensors.
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Design of supply source with several outputs
Lačný, Radek ; Lattenberg, Ivo (referee) ; Novotný, Vít (advisor)
The main objective of this work is a design of supply power source with several outputs for a telephone subscriber module. This module consists of two parts. First one is a control block containing a processor and auxiliary circuits, which requires voltage +3.3 V and +5 V. The second part is a board with cards, which provides dual telephone line feeding each and the board requires voltage in the -24 and -75 V. Bachelor's thesis contains a brief description of the basic types of convertors used in switched power sources, then the design of required power supply for the subscriber module together with the draft printed circuits and also the alternative power sources based on commercial products available on the Czech market. The resulting electrical scheme of power supply, including the printed circuits board schemes are presented in the Annex of the thesis.
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