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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
421

Vliv přenosových parametrů na spotřebu elektrické energie Zigbee zařízení / Impact of Communication Parameters on Energy Consumption of Zigbee Devices

Popelka, Jan January 2013 (has links)
This thesis deals with the energy research and design a simple wireless sensor networks. The data modules with ZigBee wireless communication technology. The main feature of wireless sensor networks is the minimal energy devices at low cost and maximum data reliability. Furthermore, the work describes firmware for communicating nodes with the ability to change parameters of data transmission and thus affect the energy consumption node. Calculations of energy consumption, compared with measured results and discharge characteristics of the battery packs are included in the final chapters of this work.
422

Zařízení pro simulaci sportovní střelby / Shooting sport simulation device

Poloch, Martin January 2018 (has links)
The goal of this diploma thesis is to design a shooting sport simulation device. Output of this project should be a market competitive product therefore the design should be focused on low price. Other important aspects are safety, reliability and mutlifunctionality of the whole system. Shooting simulation is based on special technology of sensing laser beams with LED developed in author´s bachelor thesis. The system is controlled by a group of microcontrollers. Their program running and communication is a key part of this thesis.
423

Dílčí okruhy nízkonákladové automatizace budovy / Sub-sections of cost-effective building automation

Holoubek, Lukáš January 2020 (has links)
The goal of this thesis is a building automation in which the circuits are controlled by a single-board computer Arduino and the entire system is operated by a mobile phone. The theoretical part describes a single-board computer Arduino, its parts, functions, capabilities and communication with it. In the practical part, the controlled circuits are described, implemented and a functional model of a house is created. The model of the house practically demonstrates behavior of the controlled circuits simultaneously with a possibility to manage and influence the system using a mobile phone.
424

Přenos pacientských informací pomoci GSM / Patient data trasfer over GSM

Pavliš, Jaroslav January 2008 (has links)
This diploma thesis is concerned with possibilities of patient data transfer from a pacemaker or implantable cardioverter-defibrillator to physician over GSM. Theoretical part describes options of data transfer in GSM networks, data appropriate for sending and a structure of message is proposed. A device, that is able to send medical data in a form of SMS messages is designed and constructed. The device uses a Freescale MC68HC908GP32 microcontroller, character display with a Hitachi HD44780 controller and a cell phone Sony CMD-J70. The program for microcontroller is written in assembler for HC08. For tabular view of received messages, an application software for PC was created.
425

Systém pro řízení intenzity osvětlení / Intelligent lightning system

Harman, Ján January 2011 (has links)
The aim of my master’s thesis is a system for control of the light intensity. It is electronic equipment which controls the intensity of the light circuits based on settings and input signals. This equipment could work on single-phase systems or multiphase systems. The equipment is controlled by the signal DMX-512 which is a standard for the control of lighting technologies. The set up of this equipment is based on a personal computer or in a limited form by a small connected display.
426

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.
427

Multifunkční volant Formule Student / Multiple-funktion steering wheel Formule Student

Paulus, Luboš January 2011 (has links)
The Master‘s thesis deals with a creating of display writers on multiple-function steering wheel Formule Student. It is mainly about dates transfered through RS232 or CAN bus from control unit of the Formule to microcontroller. First of all it is necessary to find out, which informations and a which way of displaying them are more useful and readable for drivers. This leads to another point - right choice of display writers, which will be used on the steering wheel. Creation of the design and construction of display device follows.
428

Použití bezkartáčového stejnosměrného motoru pro pohon lineárního servopohonu s bezpečnostní funkcí / Using brushless d.c. motor to drive servo-unit with safety function

Rudolf, Ladislav January 2012 (has links)
In this work, a proposal for BLDC motor control, which will be used as a drive linear actuator. Control with microcontroller focuses mainly aspects such as motor mode, regenerative mode, measuring rotor position sensors and measuring the motor current, which corresponds to the moment. The result of the work is focused on upgrading the existing Honeywell actuator, where the processor-controlled BLDC motor to replace the existing system and take over the actuator working function and emergency function.
429

Palubní multifunkční jednotka pro motocykly / Multifunction board computer for motorcycles

Netáhlo, Tomáš January 2012 (has links)
Master’s thesis deals with a design and a realization of multifunction board computer for motorcycles. The goal of the device is measuring speed, rotation speed of engine, temperature of ambient, temperature of engine, temperature in intake including signalization of overvoltage and hightemperature. The device is completed by above standard function such as measuring titl of motorcycle, climbing of route, route recording and data transmission to the computer. The thesis includes a complete solution of hardware and software part of the device.
430

Vliv přenosových parametrů na spotřebu elektrické energie Zigbee zařízení / Impact of Communication Parameters on Energy Consumption of Zigbee Devices

Popelka, Jan January 2013 (has links)
This thesis deals with the energy research and design a simple wireless sensor networks. The data modules with ZigBee wireless communication technology. The main feature of wireless sensor networks is the minimal energy devices at low cost and maximum data reliability. Furthermore, the work describes firmware for communicating nodes with the ability to change parameters of data transmission and thus affect the energy consumption node. Calculations of energy consumption, compared with the measured results, the discharge characteristics of the battery packs and lifetime broadcasting node is contained in the final chapters of this work.

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