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Control unit of the hoisting ramp
Špát, Pavel ; Šilhavý, Pavel (referee) ; Číž, Radim (advisor)
This work deals with the design of DC motor control for a hoisting platform which is supplied by the 12 V battery. The selection of control element is described here where suitability of a microcontroler usage and integrated logical circuits for this connection are compared for suitability. It also describes selection of sensors for sensing position of the hoisting platform where the mechanical switches, optical sensors and Hall probe are compared. This work also deals with the practical design of control. Each block of equipment and its function is described in this work. The functional prototype is the result of this work. The schematics, DPS proposal and plans of parts placement of the whole equipment are in the enclosure.
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Visualization of lossless compression algorithms
Madeja, Jiří ; Číž, Radim (referee) ; Šilhavý, Pavel (advisor)
This thesis focuses mainly on the development of visualization software for some of the most used lossless data compression algorithms. The first part of the thesis is devoted to the theoretical findings from the lossless data compression field. The second part of the thesis deals with the description of practical development of the software using Matlab. The draft is mainly focused on creating such environment to input data which will be encoded using most common lossless data compression algorithms, the comparison based on efficiency of those algorithms and visualization of the algorithm characteristics while in the process of encoding. Last part of the thesis is focused on presenting the final result of the software development.
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Heart Rate Variability Measurement Device
Süss, Ivo ; Číž, Radim (referee) ; Strašil, Ivo (advisor)
The aim of this thesis was to develop a device that will receive the signal from sporttester belt and then that signal will be processed. The meter is based on development kit STM32 Primer 2. To receive signals from sporttester belts uses sensor RMCM-01 Polar. The meter allows measurement of parameters of heart variability, recording on a memory card and work with the measured data from the memory card.
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Creating programs for teaching signal and image processing
Novotný, Luděk ; Číž, Radim (referee) ; Rajmic, Pavel (advisor)
The bachelor thesis deals with the problém of creating interactive JAVA applets. The practical part of work consist of desing, development and debugging four applets. The first one clearly explains the issue of phasor theory, the second one shows frequency filtering of audio signals, the third one demonstrates artificial coloring of grayscale images and the fourth one creates Huffman code from input text. The theoretical part describes the JAVA language, advantages of applets and theory, which relates to particular applets.
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Automatic switch between mains and accumulator power supply
Šišák, Dalibor ; Číž, Radim (referee) ; Kubánek, David (advisor)
This work deals with the solution of automatic switch between mains and accumulator power supply. For simplicity, versatility and variability of the device is controlled by a programmed microcontroller from Texas Instruments series MSP430G. Because one of the requirements is supply the device from battery power, the work deals with a design of the device, but also the selection of appropriate components with favorable characteristics such as low self-consumption or power dissipation. It also discusses how to protect the switching elements and the entire plant, converter for solar battery charging and the possibility of interaction with the user in the form of an information display and keyboard.
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Control of Positioning System for Acoustical Measerements
Pytela, Ondřej ; Číž, Radim (referee) ; Schimmel, Jiří (advisor)
This bachelor’s thesis deals with issues of remotely controlled positioning system which uses stepper motors ILS1R573PB1A0 to drive linear axes Beger Lahr PAS41BR. Stepper motors contains RS485 interface for comunication with other devices so appropriate converter was made to make a connection with personal computer via USB port. The main objective was to develop control application by using MDC_ActiveX library and development environment Visual Basic 6.
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Heart Rate Variability Measurement Device
Süss, Ivo ; Číž, Radim (referee) ; Strašil, Ivo (advisor)
The aim of this thesis was to develop a device that will receive the signal from sporttester belt and then that signal will be processed. The meter is based on development kit STM32 Primer 2. To receive signals from sporttester belts uses sensor RMCM-01 Polar. The meter allows measurement of parameters of heart variability, recording on a memory card and work with the measured data from the memory card.
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Automation of Noise Measurements Using XL2 Sounl Level Meter
Švihálek, Filip ; Číž, Radim (referee) ; Schimmel, Jiří (advisor)
This bachelor´s thesis focuses on noise measurement, characterizes used quantities and uncertainties due to the measument of these quantities. The goal is to develop application, which will automate measurement with sound level meter XL2. Automation will use text output of the XL2 and modul for Remote Measurement. Application is developed in development environment Visual Basic for Applications.
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Automation of measurement of disturbance influence on xDSL technologies
Röszler, Pavel ; Číž, Radim (referee) ; Šilhavý, Pavel (advisor)
This work focuses on interference of DSL transmission, measurement and testing with Spirent noise generator and injection unit. Deals with proposition of automated measurement of transmission bit rate dependency on wireline lenght and noise type and level. In theoretical part are described ADSL technology and noise types. Following part focuses on measurement setup and description of wireline simulator units E414 and 8234, gene- rator DLS-5800 a injection unit DLS-5410DC by Spirent company. Main part describes generator and injection unit control software and remote control commands, which are used for automated measurement. There are also described xDSL Measure tool software, which is using for automated measurement with wireline simulators and upgrade, which implements remote communication with generator a injection unit, for remote control and automatic changing noise types generated at the output.
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Modernization of the master clock for slave clocks controlling
Pokorný, Jiří ; Číž, Radim (referee) ; Krajsa, Ondřej (advisor)
This diploma thesis describes modernization of the master clock HN 50 created by company ELEKON, s.r.o. Master clock can be used for controlling of analog or digital slave clock or for switching school bells. Exact differences between old and new version of the clock are described and ways of synchronization and controlling of slave clock are explained. Main goal of modernization is applying the SMT technology for automation of production. Another problems and shortcomings of previous version are developed, such as new power supply structure, selection of a new microcontroller and usage of several different displays. Every problem is developed and new solutions are chosen. Last part of the document describes the software which is clarified on several flowcharts. Outputs of the thesis are complete schematics, printed circuit boards and 3D models of the modernized device.
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