Here i am presenting you a Fingerprint based security system using r303a module. By using this you can secure a room, office, lockers or any private areas. The basic principle used in this project is Biometric Authentication, it refers to the identification of humans by their physical or behavioural characteristics. The physical biometric authentication involves
Here we are using fingerprint as the identification factor, for that a fingerprint module R303 is used. it is a low cost, high performance, easily available one and can be able to store upto 120 fingerprint images in its memory. We can also interface it with a computer by means of max232 level converter. The fingerprint module R303 can be divided into two sections
Fingerprint Scanning section: This involves, the scanning of finger and generating a template corresponding to the alignment of ridges and valleys present in a fingerprint image. this template is then converted to a character file and will stored in its database.
Fingerprint Searching Section: This includes the identification of a fingerprint by searching each and every template that is stored in its database. The fingerprint that is to be identified will compare all the templates and generate a positive or negative acknowledge.
The microcontroller AT89S52 interacts with the module. We can add, delete or identify the fingerprint as required with the switches provided. This can be connected to any device through relay, which needs to be controlled. Microcontroller will generate the necessary HEX codes for the proper operation of fingerprint module and it is also used to Display Messages on LCD.
To ADD your Fingerprint on the system, just show your thumb or forefinger to the module twice as prompts while pressing the ADD button in the circuit.
The buzzer is used to generate alarm, if the fingerprint identified doesnot matches with the enrolled one and if it matches the relay will be activated.
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