Global ETD Search

41	Měření teploty ve fotovoltaických systémech / Measuring temperature in the photovoltaic systems Vičar, Pavel January 2010 (has links) This diploma thesis deals with covers design and realisation of device for multipoint temperature measuring in fotovoltaic systems. As a controlling microcomputer is used Atmel ATMega128L, temperature sensors are realised by DS18S20 digital thermometers, connected via 1-wire bus. System can read temperature from x temperature sensors, includes memory for measured data, real time clock and display with buttons for basic user control. Temperatures are measured periodically, values are stored into internal memory and showed on display.Measured data can also be transferred via seriál bus to clinent PC. Device is projected as a battery-operated compact tool. The final realization is made with respect to minimal system requirements and to possible future extensibility for wider usage spectrum.
42	Protokol IPv6 v bezdrátových senzorových sítích / IPv6 for Wireless Sensor Networks Polak, Martin January 2011 (has links) This thesis deals with the issues 6LoWPAN protokolu and implementation of IPv6 on the specied platform. Introduction thesis deals with the explanation of wireless sensor networks. Next it was descibed 6LoWPAN protocol, which maps IPv6 on standard IEEE 802.15.4. The thesis further concentrates to exploration of possible operation systems, that are designed for sensor networks and then followed by comparison of their characteristics and advantages. The fth chapter is focused on he implementation of the operating system to the sensor node Iris, introduction Iris and with the structure of the operating system Contiki OS. At the end of thesis is description of the implementation of this system in the sensor node Iris.
43	Algoritmy zpracování obrazu v osmibitových procesorech / Image processing algorithms in eight-bit microcontroller Rébl, Miroslav January 2011 (has links) The aim of master thesis was to investigate a simple camera and processor Atmel AVR unit implementation. Thesis describes how to get image from C3088 module and management over the bank of camera registers. Work includes limitation draft for this way of processing the information. Thesis also solves an exemplary model for object recognition using this implementation.
44	Sběr dat z webových serverů v prostředí bezdrátové senzorové sítě / Web-based data collection in Wireless Sensor Networks Velký, Petr January 2011 (has links) This thesis deals with the feasibility collecting data from web servers running on the nodes in sensor networks. It focuses on sensor network based on IEEE 802.15.4 and 6LoWPAN. The work itself is divided to the node side and server side.REST web services on the node‘s Web server provides sensor data. These data are collected with Java application running on the sensor network server. This servers stores collected data in a database.
45	Systém řízení světelných zdrojů po silových rozvodech / Light system control via powerline communications Rumíšek, Tomáš January 2012 (has links) The thesis deals with the design and implementation of smart house lighting. In the living parts of the house, the light intensity is maintained at a constant level which is set by the user. The intensity of lighting can be set manually for each room from a central module with a user interface. It can also be changed by any remote control directly in the room in which the user is currently located. When the remote control is used, the information about the change of light intensity is transmitted to the central module. For communication between the central module and the luminaires, the existing power lines are used.
46	Generování a zobrazení QR kódů na embedded grafickém OLED displeji / Embedded QR code generator with a graphic OLED display Lakomý, Tomáš January 2015 (has links) This master’s thesis deals with coding information and QR codes generating. There is described operation principle of QR codes for this purpose, and design of the equipment. This device is able to encode the information received through the serial port and display it in the QR code on the OLED display. Microprocessor is part of the device, so there is outlined the procedure for programming and testing equipment.
47	Přístupový systém využívající BodyCom technologii / Access Control System using BodyCom Technology Křístel, Jan January 2014 (has links) This master's thesis is primarily focused on the design of an electronic access control system using the BodyCom technology. The first section describes the working principle of this technology and its influence on human body. The second section shows an application of this technology in construction options of the electronic access control system.
48	Průmyslový programátor mikrokontrolérů AVR Atmel / Industrial programmer Atmel AVR microcontrollers Gryžboň, Jan January 2014 (has links) The aim of this thesis is to design and implement an industrial programmer AVR microcontrollers from Atmel. The first section provides the theoretical knowledge of the AVR microcontroller. Furthermore, comparison of methods for programming the microcontroller and the selected method is an analysis of the speed of programming. The following is the entire design of industrial programmer which is implemented in the programming environment Eagle. In the penultimate part of the proposal is designed PCB. The final section is devoted to the revival of the programmer and programming.
49	Bootloader pro Sci-Trace / Bootloader for Sci-Trace Novák, Lukáš January 2016 (has links) In this thesis analyze in detail issue Bootloader for microcontrollers AVR and made proposal for implementation to the device Sci-Trace. Modification electronics part deal with patch board, where used connect between others module and control board. Control Board handle with computer and individually module. Example others module are control optics or control stepper motors. From user interface is resolve choice information display for show temperature inside the device. From mechanical part is resolve store electronic part to the rack section. From programming part is create firmware for control board and others module. For users operation is create program for operation system for upgrade application firmware to microcontroller.
50	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

Search results