Introduction:

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Olfactory Physiology

Organic Chemistry

Signal Processing

Pattern Recognition Computational Learning

ElectronicNose

Chemical Sensors /Analytical Chemistry

Electronic Nose Systems

Com

mer

cial

ly A

vaila

ble

Syst

ems

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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