RFID SECURITY
ACCESS CONTROL SYSTEM
TECHNICAL SPECIFICATIONS:
Title of the project : RFID Security Access Control System.
Domain : Advanced Embedded Systems Design
Software : Embedded C, Keil, Proload
Microcontroller : AT89S52
Power Supply : +5V, 750mA Regulated Power Supply
Display : LED
5mm, 16 X 2 LCD
Crystal : 11.0592MHz
Data Communication : Through Serial Communication
Applications : Colleges,
Companies, Banks, Industries etc
ABSTRACT:
RFID is an acronym
for Radio Frequency Identification. RFID is one member in the family of
Automatic Identification and Data Capture (AIDC) technologies and is a fast and
reliable means of identifying just about any material object. This project can
be used for security purpose where it gives information about the authorized
persons and unauthorized persons. This can be applied in real time systems as
such in recording the attendance, in the companies and in industries to know
who are authorized. RFID is increasingly used with biometric technologies for
security. Primarily, the two main components involved in a Radio Frequency
Identification system are the Transponder (tags that are attached to the object)
and the Interrogator (RFID reader). Communication between the RFID reader and
tags occurs wirelessly and generally doesn’t require a line of sight between
the devices.
In
this project, the RFID module reader typically contains a module (transmitter
and receiver), a control unit and a coupling element (antenna). This module is
interfaced with the micro controller and when the card is brought near to the
RFID module it reads the data in the card and displays on the LCD. If the data
in the card is matched with the data in the program memory then it compares and
displays authorized message. If the data is not matched it displays
unauthorized. For authorized message, the door gets opened and the person gets
in after sometime the door gets closed. If it is an unauthorized person it
alerts the persons through a buzzer. The RFID module indicates a buzzer
whenever it reads the data from the RFID card.
The significant
advantage of all types of RFID systems is the non contact, non-line-of-sight
nature of the technology. Tags can be read through a variety of substances such
as snow, fog, ice, paint, crusted grime, and other visually and environmentally
challenging conditions, where barcodes or other optically read technologies
would be useless. This project can provide security for the industries,
companies, etc.
This project
uses regulated 5v, 500mA power supply. 7805, a three terminal voltage regulator
is used for voltage regulation. Bridge type full wave rectifier is used to
rectify the ac output of secondary of 230/12v step down transformer. The RFID
module requires a separate +5v power supply.
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