Introduction:

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Olfactory Physiology

Organic Chemistry

Signal Processing

Pattern Recognition Computational Learning

ElectronicNose

Chemical Sensors /Analytical Chemistry

Electronic Nose Systems

Com

merc

ially

Availa

ble

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Block Diagram of theExperimental Setup

Experimental Setup

Switching Box

Mass FlowController

NetworkAnalyzer

VOC inbubbler

NitrogenVOC

PC

SensorCell

EXPERIMENTAL SETUP

Mass FlowController

Network Analyzer

Gas Bubbler

SensorCell

Mass FlowMeter

SwitchingBox

Post-Itnotes

How Does Odor Signallook Like?

Identification of VOCs

Preprocessing

Increasing Pattern Separability

Neural Network Training

Neural Network Validation

VOC Identification

Raw Sensor Readings (6-D)

Filtering, Normalization, De-trending, etc.

Fuzzy nose (FNOSE), Feature range stretching, or

Nonlinear cluster transformation

Multilayer perceptron LEARN++ (for incremental learning)

Classification

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