This document describes an RFID-based attendance system. It includes an introduction to RFID technology and how it can be used for attendance tracking. The system uses RFID reader and tags to identify users and mark their attendance in a database on a microcontroller. When a user's RFID tag is detected, the microcontroller checks its database and increments the attendance count for that user. The document outlines the hardware, software, and power requirements and provides block diagrams to illustrate how the system works.

1. RFID BASED ATTENDANCE
SYSTEM
Submitted by
NAME:- EN.NO.
1. THAKOR NIMESH 156090309111
2. PARMAR PRATIK 156090309081
3. SINDHA JAYDIP 156090309105
4. PARMAR SANJAY 156090309084
5. VASAVA SNEHAL 156090309118
Under the guidance of
KJP SIR
Department of Electrical Engineering
C.U SHAH POLYTECHNIC SURENDRANAGAR

2.  Introduction
 What is RFID
 Block diagram
 Hardware requirements
 Software requirements
 Power supply
 Microcontroller
 Lcd
 Working
 Features
 Application
 Advantages
 Limitation
 Future scope
index

3. what is RFID
 Radio-frequency identification (RFID) is an automatic
identification method, relying on storing and remotely retrieving
data using devices called RFID tags or transponders.
 RFID (radio frequency identification) is a technology that
incorporates the use of electromagnetic or electrostatic coupling
in the radio frequency (RF) portion of the electromagnetic
spectrum to uniquely identify an object, animal, or person.
 An alternative to bar code

4. introduction
 The main functionality of this project is to verify the identity /
attendance of the user who needs to access it through RFID.
 For this purpose the authorized person is given an RFID card.
 This card contains an integrated circuit that is used for storing,
processing information through modulating and demodulating of
the radio frequency signal that is being transmitted.
 Thus, the data stored in this card is referred as the
identification/attendance of the person.

5. BLOCK DIAGRAM

6. Hardware Requirements
8051 series Microcontroller
RFID tags and RFID Reader
LCD
Resistors
Capacitors
Diodes
Transformer
Voltage Regulator
Crystal
switches

7. Software Requirements
 Keil compiler
 Language: Embedded C or Assembly

8. Power supply
Step down transformer Bridge rectifier Filter Regulator

9. Contd..
The 230V AC supply is first stepped down to 12V AC using a step
down transformer.
This is then converted to DC using bridge rectifier.
The AC ripples is filtered out by using a capacitor and given to the
input pin of voltage regulator 7805.
At output pin of this regulator we get a constant 5V DC which is used
for MC and other ICs in this project.

10. Microcontroller
 It is a smaller computer
 Has on-chip RAM, ROM, I/O ports...
RAM ROM
I/O
Port
Timer
Serial
COM
Port
Microcontroller
CPU
A single chip

11. Features of MC
 8K Bytes of In-System Programmable (ISP) Flash Memory
 4.0V to 5.5V Operating Range
 Fully Static Operation: 0 Hz to 33 MHz
 256 x 8-bit Internal RAM
 32 Programmable I/O Lines
 Three 16-bit Timer/Counters
 Eight Interrupt Sources
 Full Duplex UART Serial Channel

12. Pin description

13. LCD-liquid crystal display
 Most common LCDs connected to the microcontrollers are 16x2 and
20x2 displays.
 This means 16 characters per line by 2 lines and 20 characters per line
by 2 lines, respectively.
 The standard is referred to as HD44780U, which refers to the controller
chip which receives data from an external source (and communicates
directly with the LCD).

14. Working
 RFID card is detected by the reader module if it in the range of 10
cm.
 After reading the card it checks the database
 After checking database it decides that card is duplicate or not.
 According to database it controller increases the count for that specific
lecture and store it in database

15. Features of RFID based Attendance system
 Capability to store maximum records in real time
 Auto attendance of students as soon as student enters school premise /
class.
 Tracking, monitoring, and identification of students in school premise
and in GPRS-enabled school buses in real time.
 Storage of complete attendance data

16.  RFID – Radio Frequency Identification
 The reader coil generates an electromagnetic field, which couples
into the coil on the RFID tag (“transponder”).
 The field generates a current in the transponder, which powers it, and
also contains the transmitted data.
Advantages

17. RFID attendance system is secured, but there is a chance of misusing
the cards. One person can give another person’s attendance if he/she
had RFID card.
If the card was swiped for more than once, there is a chance of giving
attendance for next days also if code is not written properly.
Limitation

18.  RFID based attendance system can be used in educational
institutions, industries, anywhere.
 RFID is emerging technology and is used in applications where
authentication is needed.
Application

19.  Range of the RFID reader can be increased, so the reader can detect
the tag from far distance.
 RF TRANSRECEIVER module can be used for long distance
communication to transfer data.
 The transferred data can be save and store in computer as a database
using specific software.
 This attendance system’s data base can be linked with college
website and can be shared and monitored by the student’s parents.
Future scope