N.M.ELECTRONICS

                 The objective of this project is to identify the student in the library by using the RFID card instead of using the library ID card.

This project is very used to provide the easy access in the library.  In this project RFID card is used as library ID card.  In this project student information are maintained in the individual data base in PC. The students RFID card is used to access their database. So we can avoid the man made error.  So this project improves the security performance because we cannot make the duplicate RFID card.   

             This project is designed with

Ø  RFID tag

Ø  RFID reader

Ø  Microcontroller

Ø  RS 232 converter

Ø  Driver circuit

Ø  Alarm

Ø  PC

Ø  Key pad

RFID is the special type wireless card which has inbuilt the embedded chip along with loop antenna. The inbuilt embedded chip represents the 12 digit card number. 

            RFID reader is the circuit which generates 125KHZ magnetic signal. This magnetic signal is transmitted by the loop antenna connected along with this circuit which is used to read the RFID card number.

         In this project RFID card is used as library card. So each student has the individual RFID card. RFID reader is interfaced with microcontroller. Here the microcontroller is the flash type reprogrammable microcontroller in which we already programmed with card number. The microcontroller is interfaced with PC through RS 232 converter. The RS232 is used to convert TTL logic to RS 232 logic.

            When the student shows the RFID card in the reader, the reader will read the number and send to microcontroller. Then the student has to press the personal identification number through key pad.  The microcontroller received the card number and PIN number from the reader and key pad then compares the stored number. If the card and PIN number is valid the microcontroller transfers the card information to PC through RS 232. In PC the corresponding student database is opened. The database contains the book information for those students such as student name, department, Roll number, book name, last received date and return date etc.

       If the RFID card is not valid for that particular student, the microcontroller will display the “Authentication Fail “on the LCD display and also activate the driver circuit for alarm.  So the alarm makes the sound for indicating the Authentication Fail. We can also add the new students in the data base.

1.      Low power consumption.

2.      Improve security performance in the library.

3.      We can add new student users.

4.       Student database maintained individually so we can avoid the man made error.

                 This project is very useful to the

1.      College libraries.

2.      School libraries.

3.      Corporation central libraries.