Electro Lab: Digital library management system using microcontroller

Radio Frequency Identification (RFID) is a new generation of Auto Identification and Data collection technology using radio waves. RFID based Digital Library Management system (DLMS) would allow fast transaction flow for the library and will prove immediate and long term benefits to library in traceability and security. The system is based on UHF RFID readers, supported with inductor coil at gate and transaction sections, and library cards(Student Id card) containing RFID-transponders which are able to electronically store information. This paper presents the experiments conducted to set up RFID based Library management system.

Component:
1. Atmega328p

2. LM7805

3. RFID card(125kHz) ,

4. RFID reader(RDM6300) ,

5. Arduino UNO

6. Battery (9 volts),

7. Crystal oscillator (16MHz) for Atmega328p ,

8. buzzer ,

9. LED (green),

10. Inductor coil ,

11. Resistor (100 ohms ) .

 

Code: CODE1     CODE2

Working Principle:
 

RFID reader will create a magnetic field . If we see deeply in the rfid card, then we can see a coil inside the card and a chip which contain a specified code. The card can not energize its coil by itself alone .It receives the induction created by the rfid reader . Then a will flow in the chip . Using microcontroller we can read the code behind the card . We note down the code . Here we use four sample rfid card. We saved the two card’s code in the array of the program. If we hold the card near the reader ,then the reader reads the code and microcontroller compares the code whether the code is in the array or not .If not it will buzz the buzzer i.e. the incomer has not membership in the library. If any person has membership , the green light will lit.