ABSTRACT:

The project is aimed to design an “Examination Room Guide” using which the students can be guided for the jumbling system based exams.

Radio Frequency Identification (RFID) Card Readers provide a low-cost solution to read passive RFID transponder tags up to 2 inches away. The RFID Card Readers can be used in a wide variety of hobbyist and commercial applications, including access control, automatic identification, robotics navigation, inventory tracking, payment systems, and car immobilization. The RFID card reader read the RFID tag in range and outputs unique identification code of the tag at baud rate of 9600. The data from RFID reader can be interfaced to be read by microcontroller or PC.

           The project is designed in such a way that the RFID reader will be interfaced to the controller using serial communication technique. Here we consider 4 RFID cards which will be allotted to 4 students, so each and every student will be having a separate card. Whenever a card is read by the reader, the controller will receive the card information and will compare with preset values and then the corresponding alloted seat for the student will be displayed on the LCD which will be interfaced to the controller. Here in this project we will develop the frontend application on PC using VB .net to jumble the seating arrangement of students. The PC will also be interfaced to the controller through serial communication. Here the switching between the RFID reader and the PC will be achieved by using serial shifter.

This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Full wave bridge rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

TECHNICAL SPECIFICATIONS:

HARDWARE:

Micro controller         :           AT89S52

Crystal                        :           11.0592 MHz

Serial Driver               :           Max232

LCD                            :           HD44780 

RFID reader

RFID cards

PC

Serial shifter

Power supply

Transformer                :           12V step down 

Filter                           :           1000uf/25V

Voltage Regulator      :           7805

SOFTWARE:

Keil micro vision

Proteus

UC flash

APPLICATIONS: In Educational institutions