BBT

BIOMETRICINNOVATION

VARSHA V1DA11IS051DR.AITDept ofISENational Institute of Science and Technology (NIST) defines Biometrics as automated method of identifying or authenticating an individual based on his/her physiological or behavioral characteristic.

Biometrics: The passwords of the Future!!! BIOMETRICSBIOMETRICSElectroencephalogram (EEG)Measure net brain activity through voltage measurements by surface electrodeNo physical movement necessary

Direct communication pathway between the brain and an external device.

Also Known as Mind Machine Interface [MMI]

Monitors Brain waves via network of electrodesBIO-ELECTRICAL SIGNAL

BIO-ELECTRICAL SIGNALSensor Electrodes

Brainwave TypesREM>rapid eye movement,SMR>Sensorimotor Response

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Brainwave Types

3D Imaging using EEGLABAlphaBetaGammaDeltaTheta

Brainwave TypesStacking(3D to 2D) is best illustrated using the Matlab surf() function, however, plot3() was used for the 2D images8

DATA ACQUISITON

DATA ACQUISITONMeasure Brain Activity (EEG)Translate into signal usable by a device (wheelchair, robotic arm, etc)

Each electrode is connected to one input of a differential amplifier

A common system reference electrode is connected to the other input of each differential amplifier

Amplified signal is digitized via an analog-to-digital converter, after being passed through an anti-aliasing filter.

Sampling frequency range:256512Hz(Min Waves Required)

High-pass filter are 0.5-1 Hz(Delta wave) and Low-pass filter 3570Hz(Gamma wave frequency)

DATA ACQUISITON

Recording the BrainwaveMINDWAVE MOBILE(Neurosky)

BRAIN SENSOREAR CLIPBATTERYBLUETOOTH MODULEMINDWAVE MOBILE(Neurosky)Attention: Level of Mental Focus (0-100)Meditation: Calmness/Relax( 0-100)Blink Detection: High means stronger blink

Sensor Contact On/OffSignal Quality-(Reliability)All electrical devices create some level of ambient Noise. The noise interferes with the waves emanating from the brain.

Solutions:Environments with Restricted Electrical ActivityConductive SolutionsHEADSET PLACEMENT

Applications Using BRAINWAVE CONTROL

Produce a two dimensional Electroencephalogram (EEG) controller for widespread applicationMechanical armHands free light for DentistWheel Chair

Portable medical applications

Motor Speed Control

Drowsy Driver Detection

Music Play based on Mind State

Mind gaming,etc

APPLICATIONS1. FBI biometric centre of excellence(BCOE) http://www.biometriccoe.gov/

2. Biometrics Using Headgear to Scan Brainwaves- Proceedings of the National Conference on Innovations in Emerging Technology- February 2011,C.Eswari, S.K.Ramya, Periyar Maniammai University,TN,India3. Characteristics of Biometric System, cernet.

4. Http://xtrem-it-y.blogspot.com/p/biometrics-using-headgear-to-scan.html

5. Thinkcontact:Mirko B. Perkusich, Taciana S. Rached, and Angelo Perkusich, IEEE MemberREFERENCES