Why fingerprint biometric: High Universality High Distinctiveness High Permanence High Performance High Acceptability
Fingerprint pattern:Loops: Ridge lines enter from one side and curve around to exit from the same side. 60-65%of population.Whorls: Rounded and circular ridge pattern. 30-35% of population.Arches: Ridge lines enter from one side print and exit out the other 5% population
Block diagram of finger print module LCD Display Power supply BUZZER Micro Key pad controller 8 BANK 0 LOCKER MAX 5 232 1 Finger Print Module EEPROM
Power Supply: Most digital logic circuits and processors need a 5 volt power supply. we use a LM7805 voltage regulator IC.
Fingerprint scanner: A fingerprint sensor is an electronic device used to capture a digital image of the fingerprint pattern.
MAX 232 To connect any RS-232 to a microcontroller converters such as MAX232 is used. Bit 1 for -3v to -25v Bit 0 for +3v to +25vBuzzer: Informs when any unauthorizedperson.
Microcontroller A Micro controller consists of a powerful CPU tightly coupled with memory RAM, ROM or EPROM), various I / O features such as Serial ports, Parallel Ports, Timer/Counters, Interrupt Controller, Data Acquisition interfaces-Analog to Digital Converter (ADC), Digital to Analog Converter (ADC), everything integrated onto a single Silicon Chip.
Key pad:We are using two types of keypads The matrix keypad and other is the normal key for selecting the mode of operation.LCD: Output device Clearly displayed on the LCD.
Locker system: DC motor as the Locker for the authorized persons in the Locker system mode.EEPROM: This is the additional memory which we are using for the storage of the data for a particular person.
Working process: If a person enters in an ATM/Bank,he has to scan his fingerprint. If it matches ,he goes for transactions. Otherwise if any unauthorizedperson enters then alarm sound will beHeard from buzzer.
Software Components: KEIL IDE EXPRESS SCH Embedded C
Future Scope Performance can be increased in terms of speed and memory. A speaking voice alarm can be used to indicate unauthorized person accessing the ATM. The system can be made to communicate with modems or mobile phones
Conclusion: The microcontroller based system for securing the transactions of the user and providing the security for the locker system and even more for the PASSPORT verification using a finger print scanner has been followed.