Chapter - 4

WORKING PROCEDURE

The internal mechanism of the biometric system checks the data each time a student or staff member places his tag or card on the device, and it then takes the RFID tag data to compare it with the data from the employee's system. The aim of this project is to design an RFID Technology based Attendance System using Arduino, which the attendance of students or employees is automatically recorded with the swipe of a card or when the card is brought near to the reader.

The working of the project is explained below :

When the circuit is switched ON, initially the LCD will display the message as “Please Bring your Tag near”. When the RFID tag is brought near, the reader detects the ID card, it will l send the unique card number to the Arduino via serial terminal. With the help of suitable programming, the data which was obtained by the Arduino is compared to that of the numbers that are already stored in the Arduino or any database.

Once, if any of these numbers are match with the received card number, then the corresponding name stored in that number is displayed on the LCD display and also the attendance for the name stored in the corresponding number is marked in the Excel Sheet.

When the tag is brought near to the RFID Reader, the tag gets hit by the radio waves produced by the reader and gets activated. After being activated the data stored in the tag is taken by the reader and then compared with the stored data, if the data is matched the attendance will be recorded in the Excel sheet along with the arrival and departure time, else, it shows that the data isn’t matched or present.

CIRCUIT DIAGRAM :

https://drive.google.com/file/d/1UhwaN1YQqzAjA8IuyZwe1Ceue-q1NQki/view?usp=share_link

PROTOTYPE :

https://drive.google.com/file/d/1_Zo7_br4SBVUHgwshIUQplH3kLmKME7T/view?usp=share_link