Global ETD Search

1	Laboratorní mikrokontrolérový systém FEKTis / Laboraotry micronoctroller system FEKTis Koleček, Tomáš January 2019 (has links) This thesis deals with design and implementation of laboratory microcontroller system, based on ARM architecture. Purpose of this thesis is to teach programming. This system allows the user to work with the internal and external peripherals of the microcontroller, which are equipped with the system. This thesis includes creating a concept its peripheral solution and realization itself. A suitable development environment is determined for the system and the thesis includes sample solutions for the proposed tasks.
2	Dálkově řízené pracoviště senzorové techniky / The remote-control workplace of sensor technology Knopp, Daniel January 2008 (has links) This thesis is focused on a specific virtual laboratory support, which is designed and created as a device capable of data transferring to display and/or computational unit via serial port. Both the device and common PC are generally a corner stone of each virtual laboratory, which can be also accessed via internet. Technique, significant factors with impact of analog disturbances on digital communication and realization of standalone virtual laboratory are described in detail.
3	Lokalisering av skidor i lössnö : Självständigt arbete i Teknisk Fysik / Positioning of skis in powder snow : Independent Project in Engineering Physics Trella, Fredrik January 2011 (has links) This report studies the possibility of using some sort of radio sender and transmitter in order to position skis lost in powder snow. It is concluded that a RF-solution on the 433 MHz frequency should be the most efficient. Different forms of directional antennas are examined and studies show that in theory the best suited is the so called “Yagi-Uda antenna”. A solution based on using a Receive Signal Strength Indicator value together with the above mentioned directional antenna is developed. To control these different components microprocessors from Atmel is used. These are programmed in C and compiled with Atmel’s own compiler AVR Studio. Despite all efforts it is proven that the prototype does not perform in an adequate way. An alternative solution based on “byte-loss-rate” is then developed and the results are slightly improved. Nevertheless, the directional properties of the antenna are still too poor why other alternatives are discussed. No fully functioning prototype is achieved but good grounds for further development of the prototype into something that fulfills the specifications are produced. skis positining 433 Atmel ATMega AVR sender receiver byte loss rate RSSI Yagi RF USART UART USI skidor lokalisering positionering 433 Atmel ATMega AVR sändare mottagare byte loss rate RSSI Yagi RF USART UART USI
4	Bezdrátový pager / Wireless Messaging System Musil, Tomáš January 2009 (has links) The aim of thesis is a design of wireless pager, that can be used for short text messages transmission from the sender to a particular recipient. The report is sent from a computer via serial port. The application is based on microcontrollers, which provide data protection, evaluation and display data on the display of the receiver. The wireless transmission is effected via the RF modules, that are powered from batteries.
5	Emulátor 3.5“ disketové mechaniky pomocí RS232 a SD paměťové karty / Emulator of 3.5" diskette drive using RS232 and SD memory card Sedláček, David January 2012 (has links) This thesis deals with the design of the 3,5" floppy drive emulator with ATMEGA microprocessor unit. The emulator has been designed according to the principles of designing electronic devices, there is also object-control application and firmware for a microcontroller, which supports MFM coding. The thesis also lists all the formats of data stored or transmitted along with some flowcharts.
6	Aktivní reproduktor s digitálním vstupem zvukového signálu a s přídavnými funkcemi / Active loudspeaker with digital audio signal input and additional functions Nedoma, Jakub January 2013 (has links) The aim of the diploma thesis was to design active loudspeakers. The project contains the final solution of the designed loudspeakers that have a digital input of the multichannel audio signal with both sided data communication. In the work, there are also created circuits for processing an audio signal with a following amplification for the loudspeakers. Added functions are an infra acceptor for a remote control and binary outputs for assistant functions - a control of the motor and an indication via LED diodes.
7	Koncentrátor pro dálkový sběr dat a bezdrátové moduly / Data concentrator for data acquisition and wireless modules Palacký, Tomáš January 2015 (has links) This master’s thesis deals with design and construction of a system for repote measurement of air quality in buildings. The first section provides a selection and analysis of used hardware and software components: minicomputer Raspberry Pi, STM32F401 microcontroller, communication module XBee-Pro, CO2 sensor and also communication interfaces IC and USART. The next section includes a design of electrical wiring, circuit board, configuration of the wireless modules and a software implementation for microcontroller and the concentrator.
8	Řídicí systém pro malý mobilní robot / Control System for Small Mobile Robot Sárközy, Imrich January 2011 (has links) The aim of this work was to design a control system based on the XMega microcontroller, for a small mobile robot with an tracked undercarriage. At first, my work was to develop an electrical scheme and circuit boards for the control system. The next step was to connect sensors for non electric quantity and modify the control algorithms for a simple navigation. In the last phase I tuned the user interface and the whole control system for minimal data flow between the mobile platform and the user interface.
9	Synchronizace času pomocí GPS / Synchronization of the time using the GPS Švábeník, Petr January 2010 (has links) This thesis discusses about using the worldwide satellite system GPS for time and frequency synchronization. This thesis presents study about basic principles of the GPS system, its segments and ways of using this system. Some GPS receivers suitable for receiving the time marks (pulses) used for time synchronization are described. Thesis contents designing of the circuit that will receive time marks and it will digitalize and record external signal and send it with precision time information to PC for displaying and post processing. Thesis also discusses about both hardware and software development of the synchronization module and software used in PC.
10	Návrh zařízení pro analýzu povrchových vlastností materiálů / Design of measurement unit for analysis of surface materials properties Kratochvíl, Robert January 2011 (has links) The thesis deals with the application of laser beams for examination of material properties. The properties being examined are quality of surface finish and transmissivity of materials in the optical portion of the electromagnetic spectrum. A measuring device containing laser diodes as a source of laser beam and photodiodes for evaluation of examined phenomena serves for examination of both properties. Conversion of the signal to digital quantity and its further processing take place in a microcontroller. The data is then sent via a serial bus and a converter to a computer, where it may be saved in a user program and where the user can work with them later. The thesis contains results of reflectivity measurement of a set of metal samples with different surface finish. Transmissivity measurement was applied on a set of optical filters.

Search results