Wireless Locator System

Nurazlina , Muslim (2008) Wireless Locator System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to create a system that can help people to locate their personal belongings by using RFID (Radio Identification Identification) technology. RFID is an automatic identification method, relying on storing and remotely retrieving data using devices called RFID tags. An RFID tag is an object that can be applied to or incorporated into a product, animal, or person for the purpose of identification using radio waves. Some tags can be read from several meters away and beyond the line of sight of the reader. Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal. There are two types of RFID tag which is active and passive RFID tag. Tag used in this project is passive tag. Passive RFID tags have no internal power supply. It obtains the power when there is electrical current induced in the antenna by the incoming radio frequency signal. It provides just enough power for the CMOS (Complementary Metal Oxide Semiconductor) integrated circuit in the tag to power up and transmits a response. Passive tags have practical read distances ranging from about 10cm. Once the item is detected, it will be display at the LCD (Liquid Crystal Display). This LCD is program by microcontroller. RFID reader locate item with tag and routed it to the micro controller. Microcontroller program the LCD based on receive signal from the reader.

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