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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.
1

Localização de deficientes visuais em ambientes fechados e reconhecimento de produtos

Medeiros, Vagner Uendel de Sá 02 March 2015 (has links)
Made available in DSpace on 2016-04-27T17:05:59Z (GMT). No. of bitstreams: 1 Vagner Uendel de Sa Medeiros.pdf: 1681184 bytes, checksum: 6838cfdf4c1b1e02f7c96d2ae71dd60c (MD5) Previous issue date: 2015-03-02 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / One of the problems faced by the visually impaired is the location of objects in an unfamiliar environment. Find a product in a store without assistance is almost impossible for a person with low vision. Therefore, in this research we developed a system to provide the location of products in the supermarket aisles and then allow reading the bar code or NFC tag on the product or on the shelf .To select from the options location or identification, the screen cell was divided into two parts such that the blind or visually impaired persons may choose between them. Hence, in this study used a smartphone with Android operating system. The system was developed using the MIT App Inventor 2. This interface is a web application with open source developed by Google and maintained by the Massachusetts Institute of Technology (MIT). The interface is divided into two parts, one devoted to the design and implementation for another logic. The program is based on the Scheme language, Google voice ID and bar code reader. The device was tested indoors simulating aisles and shelves of a supermarket measuring the time required to find and identify five products. The adoption by store and supermarket system developed for this research, facilitating the location and identification of products, should contribute to the independence and quality of life for people with visual limitations / Um dos problemas enfrentados pelos deficientes visuais é a localização de objetos em um ambiente desconhecido. Encontrar um produto numa loja, sem assistência é quase impossível para uma pessoa com baixa visão. Portanto,nessa pesquisa foi desenvolvido um sistema para proporcionar a localização de produtos nos corredores dos supermercados e a seguir permitir a leitura do código de barras ou da etiqueta NFC no produto ou na prateleira. Para selecionar entre as opções localização ou identificação, a tela do celular foi dividida em duas partes de tal modo que os deficientes visuais ou pessoas com baixa visão possam escolher entre elas . Para tanto, neste trabalho foi usado um smartphone com sistema operacional Android. O sistema foi desenvolvido utilizando o MIT App Inventor 2. Esta interface é uma aplicação web com código-fonte aberto desenvolvido pelo Google e mantido pelo Instituto de Tecnologia de Massachusetts (MIT). A interface é dividida em duas partes, uma para à concepção da aplicação dedicada e outra para a lógica. A programação é baseada na linguagem Scheme, identificador de voz Google e leitor de código de barras. O dispositivo foi testado em ambiente fechado simulando corredores e prateleiras de um supermercado mensurando o tempo necessário para encontrar e identificar cinco produtos.A adoção por loja e supermercados do sistema desenvolvido para essa pesquisa, facilitando a localização e identificação de produtos, devera contribuir para a independência e qualidade de vida das pessoas com limitações visuais
2

Design och implementering av enhandsburen RFID-läsare / Design and implementation of a handheld RFID-reader

Nordström, Edward, Hollander, Johan January 2008 (has links)
Radio frequency identification (RFID) is a versatile wireless technology usedworldwide. The fields of applications are many and its popularity constantlygrows due to smaller in size, better and less expensive components. RFID isused to identify, track or share information about an object using radio waves. This master thesis describes the process of designing and implementing ahandheld UHF RFID reader. The goal was to, based on a UHF RFID-chipdesign a fully functional, small in size and power efficient device. Amicrocontroller provides the user interface and is also used to control theRFID-chip and a Bluetooth device. A Bluetooth- and GPRS-compatible mobilephone will be used to forward data to a server connected to the Internet. Allparts of the design are described, such as the printed circuit board design aswell as the software for the micro controller and the mobile phone. Because the extent of this thesis it is neither possible nor necessary to dig toodeep into the Bluetooth- or GPRS-protocol. The focus will be on designingsoftware and hardware for the handheld unit. / Radio frekvens identifiering (RFID) är en mångsidig trådlös teknik somanvänds över hela världen. Områdena där tekniken används är många och dess popularitet växer konstant tack vare mindre storlek, bättre och billigarekomponenter. RFID används för att identifiera, spåra eller dela med siginformation om ett objekt med radiovågor. Det här examensarbetet beskriver processen av design och implementering aven handburen UHF RFID läsare. Målet har varit att, baserat på ett UHF-RFIDchip, designa en fullt fungerande, liten och strömsnål enhet. En microcontroller förser dels användaren med ett användargränssnitt och sköter delskommunikationen med RFID chip och en blåtandsmodul. En blåtands- ochGPRS- eller 3G-kompatibel mobiltelefon används for att skicka vidare data tillen server kopplad till Internet. Alla delar av designen är beskrivna, så som PCB design, mjukvara för micro controllern och mobiltelefonen. På grund av omfattningen av det här examensarbetet så har det inte varitmöjligt eller nödvändigt att gräva för djupt i Blåtands- eller GPRS/3Gprotokollen. Fokus är på att designa hårdvara och mjukvara för den handhållna enheten.
3

Design och implementering av enhandsburen RFID-läsare / Design and implementation of a handheld RFID-reader

Nordström, Edward, Hollander, Johan January 2008 (has links)
<p>Radio frequency identification (RFID) is a versatile wireless technology usedworldwide. The fields of applications are many and its popularity constantlygrows due to smaller in size, better and less expensive components. RFID isused to identify, track or share information about an object using radio waves.</p><p>This master thesis describes the process of designing and implementing ahandheld UHF RFID reader. The goal was to, based on a UHF RFID-chipdesign a fully functional, small in size and power efficient device. Amicrocontroller provides the user interface and is also used to control theRFID-chip and a Bluetooth device. A Bluetooth- and GPRS-compatible mobilephone will be used to forward data to a server connected to the Internet. Allparts of the design are described, such as the printed circuit board design aswell as the software for the micro controller and the mobile phone.</p><p>Because the extent of this thesis it is neither possible nor necessary to dig toodeep into the Bluetooth- or GPRS-protocol. The focus will be on designingsoftware and hardware for the handheld unit.</p> / <p>Radio frekvens identifiering (RFID) är en mångsidig trådlös teknik somanvänds över hela världen. Områdena där tekniken används är många och dess popularitet växer konstant tack vare mindre storlek, bättre och billigarekomponenter. RFID används för att identifiera, spåra eller dela med siginformation om ett objekt med radiovågor.</p><p>Det här examensarbetet beskriver processen av design och implementering aven handburen UHF RFID läsare. Målet har varit att, baserat på ett UHF-RFIDchip, designa en fullt fungerande, liten och strömsnål enhet. En microcontroller förser dels användaren med ett användargränssnitt och sköter delskommunikationen med RFID chip och en blåtandsmodul. En blåtands- ochGPRS- eller 3G-kompatibel mobiltelefon används for att skicka vidare data tillen server kopplad till Internet. Alla delar av designen är beskrivna, så som PCB design, mjukvara för micro controllern och mobiltelefonen.</p><p>På grund av omfattningen av det här examensarbetet så har det inte varitmöjligt eller nödvändigt att gräva för djupt i Blåtands- eller GPRS/3Gprotokollen. Fokus är på att designa hårdvara och mjukvara för den handhållna enheten.</p>
4

Suddenly, I Didn't Want to Die

Deibel, Matthew JA 17 December 2015 (has links)
No description available.

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