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LIBRARY AUTOMATION SYSTEM USING RFID

ABSTRACTRFID is an acronym for Radio Frequency Identification. Primarily, the two main

components involved in a Radio Frequency Identification system are the Transponder (tags

that are attached to the object) and the Interrogator (RFID reader). Communication betweenthe RFID reader and tags occurs wirelessly. RFID tags are categorized as either active or

passive. Active RFID tags are powered by an internal battery and are typically read/write,i.e., tag data can be rewritten and/or modified.

RFID Library management is a very innovative and interesting project. In this project, each student and each book are assigned with an RFID card/tag. If a student wantsto draw a book from the library, he has to swipe his ID card and then Book Id card. Thesystem records the book transaction into the specified student account. Whenever he wantsto return the book, he has to follow the same procedure. There are 2 switches on board.While taking the book they the student should press a switch and then swap the RFID card.Controller checks the authentication of the student and gives clearance if he has permissionto take the book. While returning the book he has the press another switch and swap theRFID card of his own and the book which he want to return.

In this project, the RFID module reader typically contains a module (transmitter and receiver), a control unit and a coupling element (antenna). This module is interfacedwith the micro controller. When the card is brought near to the RFID module, it reads thedata in the card and displays on the LCD. If the data in the card is matched with the datastored in the program memory, then it compares with that ID code and displays the timeentered along with his/her name on the LCD. If the data is not matched, it alerts a person

through a buzzer.The significant advantage of all types of RFID systems is the non contact, non-line-of-sight nature of the technology. Tags can be read through a variety of substances such assnow, fog, ice, paint, crusted grime, and other visually and environmentally challengingconditions, where barcodes or other optically read technologies would be useless. Hencethis project can be very much useful and can be implemented in real time applications for recording the attendance.

This project uses regulated 5v, 500mA power supply. 7805 and 7812 three terminalvoltage regulators are used for voltage regulation. Bridge type full wave rectifier is used torectify the ac output of secondary of 230/12v step down transformer. The RFID module

requires a separate +5v power supply.

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REQUIREMENTS: AT89C51 controller RFID reader RFID tags RS232 cable MAX 232 [line converter]

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