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Control unit of four - legged robot based on microcontroller PIC
Youssef, Daniel ; Lamberský, Vojtěch (referee) ; Grepl, Robert (advisor)
This Bachelor thesis develops “Jaromir“, a four legged robot by adding appropriate sensors to it and designing a new control unit that is able to receive and process the acquired data by the sensors. The functionality of the control unit is tested by implementing a number of simple movements. This testing demonstrates the possibility of using this unit for the developing and testing of complex movement algorithms.
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Adaptive frequency filter
Dolák, Jan ; Murina, Milan (referee) ; Sedláček, Jiří (advisor)
This thesis deals with passive and active frequency filters and their realization. The mail goal of my thesis was to design, simulate and realize adaptive frequency filter with the possibility of alternating it's parameters. The designed filter should be an active band stop filter of fourth kind with the possibility of alternating it's resonance frequence f0 and it's coefficient of quality Q. At the beggining it was needed to study the theory of frequency filters, types of frequency filters, which are often used in praxis, their properties and ways of their realizations. Use of active filters with operational amplifiers was optimal possibility of their realization. Because of there was given them the biggest attention in this part of the thesis. Then it was searched the most acceptable solution of required band stop filter, witch would have the best properties. Digital potentiometers operated by microcontroller were chosen for setting different values of various parameters. Designed circuits were realized after the decision and adaptation of optimal wirings and then the programme for operating of microcontroller and digital potentiometers was configured. By this way designed circuits were experimentally measured.
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Smart accumulator tester and charger
Mílek, Čestmír ; Trmač, Jiří (referee) ; Michálek, Václav (advisor)
Nickel cadmium and nickel metal hydride accumulators sets are currently used for supplying hand tools (screwdrivers,...). Problems of cheap hand tools are chargers, mostly of it doesn’t use any charging driving circuits. In consequence of it the accumulators are kept incorrectly, which causes lowernig of lifetime. This thesis suggest circuit design Main of intelligent charging system, which enable better battery management, increases battery lifetime and lower load of environment.
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Digitally controlled triangle-, square- and harmonic wave generator
Bradáč, Lubomír ; Koton, Jaroslav (referee) ; Vrba, Kamil (advisor)
Feasible solutions of digitally controlled triangle-, square- and harmonic wave generators are described in this bachelor´s thesis. There is general description of wave generators at the beginning. We can divide the wave generators to two groups. The first group of them are Arbitrary Waveform Generators and the next group is presenting Arbitrary Function Generators which are working with Direct Digital Synthesis. There are descriptions of their features, possibility of using, advantages and disadvantages in bachelor´s thesis. Of consequence part there are plug-in cards which are used as functional generators and multifunction cards. Their principal characteristics are described in relevant chapter. The most important part of this bachelor´s thesis is suggestion of digitally controlled triangle-, square- and harmonic wave generator which make use microcontroller of company ATMEL. You can find the process of execution, description its features and controlling program in the last chapter. All of measured results are saved in compact disc which is part of bachelor´s thesis.
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Improvement of the laboratory boards for BDTS subject
Hynek, David ; Kledrowetz, Vilém (referee) ; Pavlík, Michal (advisor)
This work describes improvements in laboratory tasks that will be used in the university classes BDTS. Theseis classes deal with diagnostics and testing of electric circuits. Main focus is on simplification of the measurement procedure. An innovation, design, firmware development and realization are described in following chapters. The theoretical part explains functions of analog circuits and failure of electronic components. The last part focuses on testing of new laboratory tasks and on modifying laboratory manuals.
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Automatic System for Load Characteristics of Power Supplies Measurement
Vojtek, Michal ; Dřínovský, Jiří (referee) ; Šebesta, Jiří (advisor)
The target of this work is create device, which will automatic measure values for find out loading characteristics of power supply with help of built-in electronic load. In case, that source of current supply will for example DC/DC convertor, measurement of input current and input voltage will be possible. Then there is no problem with determinate total efficiency of this power supply. Measuring system will be conected via serial interface of type USB with computer. It will be possible to save found out values with help of control program for nother processing. Control unit of whole system will be suitable microcontroller.
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Control of microcontroller via Internet
Kulig, Tomáš ; Fedra, Zbyněk (referee) ; Frýza, Tomáš (advisor)
The title of my bachelor’s thesis is Control of microcontroller via Internet. The result will be a web page (through this page it will be possible to communicate with a development board) and a design of development board itself. Due to complexity of TCP/IP protocol, I am going to use a simple operating system Nut/OS with the converter RTL8019AS (enabling transfer Ethernet to ISA bus) and with microcontroller ATmega128.
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Planar LED Display Application
Houserek, Jiří ; Kosina, Petr (referee) ; Šandera, Josef (advisor)
This coursework deals theoretical with design and construction of the electronic clocks controlled by DCF77 signal, which is broadcasted from Germany. This device will be used as alarm and is able to show date. There is used display, which consists of 8x32 LED matrix in a modular, which is connected to main board over the edge. This device is controlled by microcontoller PIC16F887A. There are described displays, microcontrollers and DCF time signal.
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Control unit for heat pump
Kada, Tomáš ; Friedl, Martin (referee) ; Hadinec, Michal (advisor)
This bachelor’s thesis is interested in optimal regulation of air-water heat pump for heating the family house. The emphasis is reach the maximum efficiency, lowest cost and longest life of heat pump. The regulation is carried out by microcontroller ATmega16, which receives data from several temperature sensors, real-time clock circuit and indoor unit with user interface. The regulation is divided into two parts – control of heat pump and circulation pump floating hot water to radiators.
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ALU Built-In Self Test
Bednář, Jaroslav ; Růžička, Richard (referee) ; Drábek, Vladimír (advisor)
This work deals with faults, errors and failures, which can occur during manufacturing and long term operation. Work describes the various failures and fault models. There are some approaches to get fault tolerant systems, mainly in hardware. The thesis continues with a summary of methods for ALU software testing. The last chapter is about tests generation for microcontroller MSP430.
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