Introduction: Olfactory Physiology Organic Chemistry Signal Processing Pattern Recognition Computational Learning Electronic Nose Chemical Sensors / Analytical Chemistry

Electronic Nose Systems

Commercially Available Systems

Block Diagram of the Experimental Setup

Experimental Setup Switching Box Mass Flow Controller Network Analyzer VOC in bubbler Nitrogen VOC PC Sensor Cell

EXPERIMENTAL SETUP Mass Flow Controller Network Analyzer Gas Bubbler Sensor Cell Mass Flow Meter Switching Box Post-It notes

How Does Odor Signal look 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