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 ID CODE in the card and then compares with the ID CODE of that present in the system and if it matches then the door gets opened in clockwise direction and the person gets in and after sometime the door gets automatically closed.
Then to access your bank i.e., any transactions to be done then in the system you need to enter your user id and password using KEYPAD then if it is success you can access in the way you like to do. If the password is not matching then he will be given only 3 chances after that, system gets into blocked mode and it indicates this with a buzzer. For an unmatched card, it alerts a person around by giving a sound through a buzzer with 3leds dancing.
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.