neural based artificial olfaction system (e-nose)

8/9/2019 Neural Based Artificial Olfaction System (E-nose)

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NEURAL BASED ARTIFICIAL

OLFACTION SYSTEM (E-NOSE)

PRESENTED BY:

P. JOSHNA PRIYATHARSHINI

S. MADUBALAFINAL ECE


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INTRODUCTION

An odor or odour is a volatilized chemical compound, generally at

a very low concentration, that humans or other animals perceive bythe sense of olfaction.

Artificial olfactory system, based on the structure andmechanism of biological olfactory system. Biological olfactory

receptors able to detect 300-500 different scents.

We use labview for the simulation in which, neural tool and

visual display are used for our design.


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HUMAN OLFACTORY SYSTEM

Epithelium

Olfactory

Receptorcells

Olfactory

Bulb

Mitral cells

Olfactory

Cortexneurons

OdoOdo

rr

BrainBrain

PerceptionPerception


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ARTIFICIAL OLFACTORY

SYSTEM

Sensor

Array QCM

Odor

Extraction

Pattern

Recognitio

n

(NN)

OdorOdor InformatioInformatio

nn

ComputerComputer


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ANALOGY BETWEEN THE ELECTRONIC

NOSE AND THE BIOLOGICAL NOSEHUMAN OLFACTION ARTIFICIAL OLFACTION

INHALING PUMP

CONTAINER NASAL CAVITY

MUCUS FILTER

OLFACTORY EPITHELIUM SENSORS (QCM)

BINDING WITH PROTEINS INTERACTION

ENZYMATIC REACTIONS REACTIONS

CELL MEMBRANE DEPOLARIZED SIGNAL

NERVE IMPULSES CIRCUITRY AND NEURAL NETWOK

OLFACTORY BULB(PART OF BRAIN) COMPUTER

PERCEPTVE CORTEX OUTPUT IN LAB VIEW


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SENSING AN ODORANT

In a typical e-nose, an air sample is pulled by a

vacuum pump through a tube into a small

chamber housing the electronic sensor array.

The sensors response is converted intoelectronic signal by using a transducer and is

processed by using the signal processing unit


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QUARTZCRYSTAL MICROBALANCE

(QCM )

QCM is an ultra-sensitive mass sensor.The heart of the QCM is the piezoelectricAT-cut quartz crystal sandwiched between

a pair of electrodes.


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CRYSTAL OSCILLATOR

An oscillator is basically an amplifier and afrequency selective feedback network.

It is often required to produce a signal whosefrequency or pulse rate is very stable and exactlyknown. This is important in any application whereanything to do with time or exact measurement iscrucial.

The MC12061 is for use with an external crystal toform a crystal controlled oscillator.


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MC12061 Frequency Range = 2.0 to 20 MHz

Temperature Range = 0 to + 70C

Single Supply Operation: +5.0 Vdc or 5.2 Vdc

Three Outputs Available:

Complementary Sine Wave (600 mVpp typ)

Complementary MECL

Single Ended TTL


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NEURAL NETWORKS

Adaptive learning

Self-Organization

Real Time Operation


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ARTIFICIAL NEURAL NETWORKS

An Artificial Neural Network (ANN) is aninformation processing paradigm thatwas inspired by the way biologicalnervous systems, such as the brain,process information.


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FEATURES OF LABVIEW

LabVIEW is a graphical programmingsoftware that utilizes graphical objects tosymbolize lines of code instead of theaverage programmers text-based

languages.

LabVIEW excels in data acquisition and

control, data analysis, and datapresentation, while delivering thecomplete capabilities of a traditionalprogramming language such as Microsoftvisual C.


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ARTIFICIAL NEURAL NETWORK IN

LABVIEW

Artificial intelligence is a branch of study whichenhances the capability of computers by givingthem human-like intelligence.

LABVIEW has unique ability to develop data flowdiagrams that are highly parallel in structure.

LABVIEW seems to be a very effective approach forbuilding neural networks.


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HARDWARE MODULE


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SENSOR SYSTEM:


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LABVIEW SIMULATION:


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RESULT AND DISCUSSION


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APPLICATIONS:

Quality control in the food industry

Quality control of packaging material

Medical diagnostics

Environmental monitoring Perfume and aroma industry

Control of beverages, e.g., wine and beer

Tobacco industry

Coffee industry

Assessment of car interiors


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ADVANTAGES

The e-nose is a compact device and so it is

portable and reliability is very high.

It can identify simple molecules which cannotbe accomplished by human nose.

It can identify a smell objectively.


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DISADVANTAGES

The cost of an e-nose ranges from $5000 to

$100,000.

Another disadvantage has been the delay, the

time delay ranging between 2 to 10 minutes.


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CONCLUSION

Scents have an immediate and compellingeffect. They touch our soul, consciously orunconsciously, and allow us to fell deeply.

When applied to communication, scent

becomes a new information channel. It allowsus to perceive products and create a previouslyunimagined emotionality and productcredibility.

Scent communication will be one of the mostimportant information tools of future.


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Neural networks do not perform miracles.

But if used sensibly they can producesome amazing results.


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BIBLIOGRAPHY:

J.W. Gardner- Application of Artificial Neural

Networks to an Electronic Olfactory System.

Sensors and Sensory Systems for anElectronic Nose.- J.W. Gardner


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REFERENCES:

S. Skogestad,Control structure design for completechemical plants, Computers and Chemical Engineering,28, pp. 219-234, 2004.

Z. Lin and S. Yin, Design of PID temperature controllingsystem based on virtual instrument technique,Proceed. Eight Int. Conference on ElectronicMeasurements and Instruments, Vol. 3, pp. 69-73,2007.

Yuwono AS, Boeker P and Schulze Lammers P. 2003.Detection of odour emissions from a composting facilityusing a QCM sensor array. Analytical and BioanalyticalChemistry 375 (2003): 1045-1048.


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THANK YOU

neural based artificial olfaction system (e-nose)

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