Title: RFID based Attendance System
1RFID Based Attendance System
2RFID Based Attendance System
- 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. -
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3RFID Based Attendance System
- Once, the person places the card in front of the
RFID card reader, it reads the data and verifies
it with that data present in the system and if it
matches then it displays a message as valid entry
and allows accessing the device or else displays
invalid and denies the access/attendance.
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4RFID Based Attendance System
- RFID Based Attendance System Principle
- RFID based attendance system consists of RFID
Reader, RFID Tag, LCD display and microcontroller
unit. - RFID can be interfaced to microcontroller through
USART. Data is transferred from RFID cards to
reader and from there to microcontroller. - RFID tags are of two types
- Passive Tags.
- 2) Active Tags.
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5RFID Based Attendance System
- Passive tags contain 13 digit number tag inbuilt
in it, where as active tag is read/write tag i.e.
one can read from the tag and write to the tag. - RFID projects uses passive tag. In real time, one
can issue active tags to the students, with their
roll numbers as their tags. - RFID reader contains a copper winding in it. This
winding acts as an antenna. - When the tag is placed near the reader, due to
the induced mutual inductance energy, data is
transferred to reader. Reader then transfers data
to the microntroller. - Microcontroller checks for the data continuously,
if any data is received, microcontroller compares
the data in data base. If the tag is
authenticated, microcontroller takes the
attendance.
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6RFID Based Attendance System
Block Diagram
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7RFID Based Attendance System
- Hardware Requirements
- 8051 series Microcontroller
- RFID tags and RFID Reader
- LCD
- Resistors
- Capacitors
- Diodes
- Transformer
- Voltage Regulator
- Crystal
- switches
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8RFID Based Attendance System
- Software Requirements
- Keil compiler
- Language Embedded C or Assembly
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9RFID Based Attendance System
Circuit Diagram
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10RFID Based Attendance System
- How to Operate RFID Based Attendance System
Circuit - After making all the above connections, Switch on
the circuit. - On LCD it is displayed PLEASE SWIPE THE CARD.
- Place the RFID based attendance tag near the
reader. - Reader then reads the data in the tag and
transmits to the controller. - Microcontroller compares the tag with the
database. If the tag is matched LCD displays
authenticated and takes your attendance. - Now place another card which is not present in
the database and check for authentication.
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11RFID Based Attendance System
- Now LCD displays Un authorized and it will
never take the attendance. - In this way, we can use implement this circuit.
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12RFID Based Attendance System
- Liquid crystal display-lcd
- 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).
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13RFID Based Attendance System
- Applications
-
- 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.
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14RFID Based Attendance System
- Advantages
- Proxy attendance can be caught.
- Hard copy paper work of attendance sheets is
reduced. - Data can be store long time compare to attendance
sheets. - This system is fully automated and it does not
require any human interaction except setting the
initial time setting. - LCD and PC interface both are provided with RFID
based attendance system. This gives benefit of
viewing attendance on the spot on LCD or remotely
from computer.
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15RFID Based Attendance System
- Limitations
- RFID attendance system is secured, but there is a
chance of misusing the cards. One person can give
another persons 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.
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16RFID Based Attendance System
- Future Scope
- 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. - Timely attendance can be monitored i.e. time in
and time out can bar corded using RTC (real time
clock) and can be stored in the database
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17RFID Based Attendance System
- This attendance systems data base can be linked
with college website and can be shared and
monitored by the students parents. - We can send this data through internet to the
user. So that user can access it remotely via
internet. - We can implement GSM technology
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18Railway Track Security by GSM With User
Programmable Number Features
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