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Saturday, 22 May 2010

RFID Based Door Access Control System circuit

Automation today has increased the speed of living. This project in which radio frequency is used to automatically control the door locks and grants access to the persons who are allowed to access that particular door.

The technology used is termed as RFID meaning ‘Radio Frequency Identification’. Here tags are provided in the form of identity cards which contain a coil and a transmitter.

When the coil is placed in a high frequency electromagnetic waves, it is energized and provides supply to the transmitter which transmits a code unique to the tag. This code is received and identify and hence the person is identified.

After identifying the person the access permission to the person are verified and if he is trying to access a door, which he is allowed access to, the door is opened and a log is created with the person’s name and time accessing the door.


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