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USB communication protocol analysis
Zošiak, Dušan ; Fujcik, Lukáš (referee) ; Šteffan, Pavel (advisor)
Tato práce je zaměřena na zpracování a analýzu USB komunikačního protokolu a implementace jeho jednotlivých částí do FPGA obvodu s využitím programovacího jazyka VHDL. Ve finální podobě by měla práce představovat souhrnný a ucelený dokument popisující principy USB rozhraní a jeho komunikace doplněných praktickým návrhem v jazyce VHDL, který by byl schopen převést data do USB.
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Altitude meter for RC models
Beneš, Jan ; Frýza, Tomáš (referee) ; Prokopec, Jan (advisor)
Altimeter measures atmospheric air pressure and counts actual model altitude from it. Then sends data to ground module, which shows them on display. Ground module contains USB interface for connecting to PC. It enables upload of flight data and opportunity to show them in graphical representation.
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Electronically controlled active 2-nd order filter
Ševčík, Břetislav ; Petržela, Jiří (referee) ; Šotner, Roman (advisor)
The diploma thesis deals with the modern design of the control circuits for digital potentiometers and their application in analog systems. The concept of the digital control is demonstrated on the electronically controlled active 2-nd order filter and programmable oscillator. The proposed design of the active filter describes a programmable active 2-nd order filter Sallen-Key. In this circuit it is possible independently programme cut-off frequency, Q factor and type of approximation with very good accuracy. The circuits of the designed filter and designed oscillator are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Properties simulated circuits are compare with experimental results. These results appreciate quality and efficiency of the digitally controlled potentiometers in dependence on variable input circuit parameters. Integral part of this project is author’s universal control program called Digipot and comunications interface for many types of digital potentiometers with I2C, SPI or Up/Down interface. It is possible to use this device for many applications. The constructional details of the filter are presented at the end of this work. The software equipment is availability on enclosed CD.
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Control of the communication on the USB
Hlavica, Zdeněk ; Michálek, Václav (referee) ; Prokeš, Aleš (advisor)
The aim of Master’s thesis Control of the communication on the USB is realization hardware and software designed for microcontroller C8051F120 what is enabling recording of data on memory medium Flash drive. It includes study of USB, transfer protocols, which are needed and file system. The thesis deals about host type USB controllers and about USB controller MAX3421E fy Maxim, which has been choosen for development of software. It is required ability to create directories and files including recording data to file and ability of reading data from files in the file system FAT16.
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Battery powered datalogger
Rezek, Petr ; Kučera, Pavel (referee) ; Bradáč, Zdeněk (advisor)
The diploma thesis deals with the questions of battery powering, measuring of analog physical values using microcontroller and recording of data on a memory SD card Bibliographic reference: REZEK, P. Battery powered datalogger. Brno: Brno University of Technology, Faculty of Electrical Engineering and Communication, 2008. 65 p. Supervisor: Ing. Zdeněk Bradáč, Ph.D.
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Industrial state indicator
Růžička, Zdenek ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
Diploma work deals with industrial display systems, indicators and their proposal. These systems are used everywhere that is necessary to mediate transmission of information. Own proposal of indicator is very specific and depends on given application and used display. In practice there is possible to use a few types of displays but in this diploma work there are used only sedmisegmental and matrix. Common component of proposal is microcontroller. No less significat and important part of the proposal is a choice of interface and communication protocol. The correct choice of hardware that is completed with software we will obtain complete status indicator.
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Software for field gamaspectrometr
Adamec, Filip ; Richter, Miloslav (referee) ; Čejka, Miloslav (advisor)
This work is about design, implementation, menu and communication with superior system for gamaspectrometer. The first part of the document describes basic principles of measuring of gamma spectra and their processing. The second part describes in basics software core of the spectrometer, handling of the keyboard, graphic and text output. Used algorithms are described, and their implementation. The third part contains analysis of requirements on menu, basic concepts of menu control. Next, it is described how to handle inputs from user, like numbers, date and time, and also how to solve the menu for display of values and for input of values. The forth part describes requirements for communication with superior system (PC), analyses how to do deal with this and reasons for this solution. The conclusion brings all concepts used in the previous chapters and reached goals.
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Thin device for the real temperature distribution measurement with the negastore matrix
Martinásek, Zdeněk ; Chmelař, Milan (referee) ; Rampl, Ivan (advisor)
The main task of the Master Thesis is to project a device to measure surface temperature distribution by matrix of diodes. The maeasuring device is designed for usage at places where other thermal map scanning measuring methods (e.g. thermocamera) can not be used. The key objective was to design an appropriate measuring method for selected type of sensor. This method should ensure the most effective detection of the changing value, translate received values to the digital form and send it to the computer. All circuits were powered over USB (Universal Serial Bus) together with the signalling. Calibration was needed due to different sensors technical parameters. The calibration was realized on the software level and displayed with the thermal map scanning on the computer. The final project has the form of the measuring installation with 256 sensors on 8x8 cm area.
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Converter USB/RS 485
Henzl, Václav ; Hanák, Pavel (referee) ; Herman, Ivo (advisor)
This thesis is describing problematic of realisation of converter from USB type media into the universal RS-485 bus which is mainly used for the industrial applications (author is using frequently as a device in order to enable communication between server and RFID devices). This thesis contains theoretical information, realisation of the device itself and assesment of reached targets.
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