COLLEGE OF ENGINEERING CHENGANNURDEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

APRESENTATION

ON

FINGERPRINT BASED SECURITY SYSTEM

Submitted by,ARSHAD A.KANAND P.PSHIKIL UNNIKRISHNANJINTU V .JOHN

INTRODUCTION• FINGERPRINT RECOGNITION –TECHNIQUE FOR PERSONAL IDENTIFICATION.

• FINGERPRINTS ARE MADE UP OF LOCALLY PARALLEL RIDGES WITH SINGULAR POINTS.

• BIOMETRICS IS THE AUTOMATED METHOD OF RECOGNIZING A PERSON BASED ON PHYSIOLOGICAL OR BEHAVIORAL CHARACTERISTICS.

• OUR PROJECT IS DEVELOPED TO PROVIDE SECURITY FOR ORGANIZATION.

• THE FINGERPRINT SENSOR SENSE THE THUMB IMPRESSION OF CORRESPONDING PERSON AND THAT IMAGE WILL BE COMPARED WITH REGISTERED IMAGE.

• IF BOTH THE IMAGES ARE UNIQUE, THEN FINGERPRINT DEVICE ACTIVATES THE PARTICULAR TASK.

WHAT IS FINGERPRINT?

• THE SKIN ON OUR FINGERS ARE MADE UP OF MANY RIDGES OF SKIN THAT ARE CREATED ,WHEN WE ARE STILL IN OUR MOTHER’S WOMB.

• THEY REMAIN THE SAME FOR THE REST OF OUR LIVES.

• EACH OF THE RIDGES CONNECT TO OTHER RIDGES, FORMING A PATTERN THAT IS UNIQUE TO ALL OTHERS.

• NO TWO PEOPLE IN THE WORLD HAVE EXACTLY THE SAME PRINT.

FINGERPRINT PATTERNS

LOOPS• RIDGE LINES ENTER FROM ONE SIDE AND CURVE AROUND TO EXIT FROM THE SAME

SIDE.

• 60-65% OF POPULATION HAVE THIS PATTERN.

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.

PRINCIPLE OF OPERATION• WHEN A FINGER IS KEPT AT THE FINGERPRINT READER , IT WILL GIVE INFORMATION

ACCORDINGLY TO MICROCONTROLLER BY SENDING APPROPRIATE COMMANDS TO READER AND IS DISPLAYED ON LCD.

• IF THE INFORMATION MATCHES WITH THE ONE WITHIN THE DEVICE,THEN THE DC MOTOR INTERFACED TO MICROCONTROLLER RESPONDS ACCORDINGLY.

• IF THE INFORMATION PROVIDED BY THE USER IS INCORRECT OR MISMATCH IN FINGERPRINTS IS DETECTED AND ACCESS IS DENIED.

• FINGERPRINT READER AND MICROCONTROLLER UNIT ARE CONNECTED USING SERIAL INTERFACE.

BLOCK DIAGRAM

MICROCONTROLLER AT89S52

• 8 KB OF MEMORY.

• 16 BIT PROGRAM COUNTER.

• USED TO CONTROL THE R305 FINGERPRINT MODULE.

FUNCTIONS:

• READING VARIOUS DIGITAL INPUT SIGNALS FROM FINGERPRINT SENSOR.

• SENDING THIS DATA TO LCD,SO THAT PERSON CAN UNDERSTAND THE STATUS.

• GIVING RESPECTIVE SIGNAL TO VARIOUS OUTPUT DEVICES.

• RELAY AND DC MOTOR FOR VALID ACCESS AND BUZZER FOR INVALID ACCESS.

• SENDING DATA TO COMPUTER USING SERIAL PORT.

FINGERPRINT MODULE

FINGERPRINT MODULE• CONSISTS OF FINGERPRINT SENSOR AND SCANNING SECTION.

• FINGERPRINT PATTERN IS COMPOSED OF A SEQUENCE OF RIDGES AND VALLEYS.

• IN A FINGERPRINT IMAGE,RIDGES APPEAR AS DARK LINES WHILE VALLEYS ARE LIGHT AREAS BETWEEN RIDGES.

• A CUT OR BURN TO A FINGER DOES NOT AFFECT THE UNDERLYING RIDGE STRUCTURE AND ORIGINAL PATTERN WILL BE REPRODUCED WHEN NEW SKIN GROWS.

• RIDGES AND VALLEYS GENERALLY RUN PARALLEL TO EACH OTHER,AND THEIR PATTERNS CAN BE ANALYZED ON A GLOBAL AND LOCAL LEVEL.

LCD MODULE• 16*2 LIQUID CRYSTAL DISPLAY.

• THE LIQUID CRYSTAL DISPLAY IS A LOW POWER DEVICE.

• A LIQUID CRYSTAL IS A MATERIAL THAT WILL FLOW LIKE A LIQUID BUT WHOSE MOLECULAR STRUCTURE HAS SOME PROPERTIES NORMALLY ASSOCIATED WITH SOLIDS.

• THE POWER REQUIREMENT IS TYPICALLY IN ORDER OF MICROWATTS FOR THE LCD.

POWER SUPPLY

• MOST DIGITAL LOGIC CIRCUITS AND PROCESSORS NEED A 5 VOLT POWER SUPPLY.

• A LM7805 VOLTAGE REGULATOR IC IS USED.

KEYPAD• USER WILL ENTER VARIOUS COMMANDS USING THE KEYPAD.

• VARIOUS KEYS OF KEYPAD ARE USED FOR ADDING FINGERPRINT ENTRY,FOR SEARCHING FINGERPRINT,FOR EMPTYING THE DATABASE OF FINGERPRINT MODULE.

DC MOTORS

• DC MOTORS CAN BE USED TO DRIVE THE GATES.

• DC MOTORS ARE ALWAYS PREFERRED OVER STEPPER MOTORS.

• LOW COST