Rfid and collision protocols

TECHNISCHE UNIVERSITÄT ILMENAU INTEGRIERTE HARD UND SOFTWARESYSTEME

REPORT CONCERNING THE “PROGRAMA PILOTO DE COOPERAÇÃO INTERNACIONAL PARA INTERCÂMBIO DE ESTUDANTES DO IF-SC – PROPICIE“ – 3th EDITION

A RESEARCH ABOUT RADIO FREQUENCY IDENTIFICATION (RFID) SYSTEMS AND ANTI-COLLISION PROTOCOLS

Student: Gregory Chagas da Costa Gomes Professors: Karsten Henke, Steffen Ostendorff and Roberto A. Dias

FLORIANÓPOLIS – SC – BRAZIL OCTOBER, 2011

Abstract

The advance of world production of goods and the quest for more control of these products forced the discovery of new technologies of processes identification, control and integration. The RFID – Radio Frequency Identification – technology comes to occupy its place in this context, making easy the identification of several products in a short time automatically, safety and integrated. The way how the RFID technology reads the products identifiers allow many tags to communicate with the reader in the same time, which causes collisions in the reading of the products IDs. To solve this problems are used two ways: ALOHA based algorithms (developed by the Hawaii University) or tree based algorithms. This paper will explain the RFID technology since the basics, its history and actual applications, the standards used to data transmission, even the anti-collision algorithms. In the end the paper will show the results of an embedded application running in an ATMEGA644 to read RFID cards and make the access control. In the end is good to say that this job is the result of a partnership between the Technical University of Ilmenau – Germany and the Federal Institute of Santa Catarina – Brazil.

Summary
Introduction ................................................................................................................................... 4 Chapter 1 – The history of Radio Frequency Identification (RFID) ............................................. 6 The actuation fields of RFID today