Artificial Olfactory Systems (AOS) or electronic nose ISENose 2000

www.soatec.unipr.itwww.ssmg.unipr.it

What is an artificial olfactory system (AOS)?

An AOS is an instrument composed of a sensor array and of a suitable data treatment software, able to characterize and recognize simple and complex odours

An AOS is an instrument composed of a sensor array and of a suitable data treatment software, able to characterize and recognize simple and complex odours

This technology does not identify the single odour components and their relative quantities, but it gives a complete analysis, operating in a similar way to the human olfactive system

This technology does not identify the single odour components and their relative quantities, but it gives a complete analysis, operating in a similar way to the human olfactive system

The principle advantages of using the AOS are:

Simplicity and synthetic assessment

Immediate result

No sample pretreatment

The principle advantages of using the AOS are:

Simplicity and synthetic assessment

Immediate result

No sample pretreatment

Artificial versus natural olfactory system

ISE Nose2000

AOS operating system

SAMPLESENSORS

FINGERPRINT

SOFTWARE

DFA RESULT

Optimized for “QUALITY CONTROL” applications

AOS with MOS sensors

Packaging quality control

Evaluation and control of raw materials

Olive oil defects

Paperboard quality control

Parmigiano Reggiano cheese quality control

PRACTICAL APPLICATIONS

Main application: quality controlfor food packaging

Deep Knowledge of the Problem, acquired within the frame of cooperation with Barilla Alimentare S.p.A.

Optimisation of Hardware configuration and Software procedures for Quality Control application

Software Processing module based on creation and maintenance of a dynamic Data Base of reference samples (“Bad” and “Good” samples)

Fully Assisted operation and classification procedure

1. ISENOSE 2000 main unit

2. Self-sampling unit

3. Supervision PC (Wintel configuration)

The “ISENose2000” Artificial Olfactory Device

The system is composed by:

ISENose2000 Technology

• The ISENose2000 system is based on MOS thick- and/or thin-film chemical gas sensors

Air Flow in Air Flow out

Humiditysensor

Temperaturesensor

Metal-OxideGas Chemical

Sensors

Sensors chamber

16-Position Self-sampler

ProprietaryDesign

• Inexpensive, easy-to-use

• Optimized for QualityControl activity on sample batches

• Completely SW-driven sampleselection, data acquisition andcleaning of the line

Detail of vial connection

• Each pair of needles is used for one vial where a given sample of the desired material has been inserted

Inside the nose: the MOS sensors chamber

Top view

TEMPERATURESENSOR

HUMIDITYSENSOR

AIR INLETAIR OUTLET

MOSSENSORS

Working principle of MOS sensors

½ O2 + (SnO2-X)* O_(SnO2-X)

CO + O_(SnO2-X) CO2 + (SnO2-X)*

SENSOR DATA TO THE PCSENSORSCHAMBER

MASS FLOW CONTROLLER

INPUT: GC AIR SOURCE

16 SAMPLE VIALS

TUBING

CONNECTORS

OUTPUT: EXTERNAL AIR

Air flow control system

4-Ways Valve

16 Ways Valve (Autosampler)

42

13

Serial connection between PC and ISENOSE main unit PC

Schematic of operation

Application software installation

Typical (Data acquisition, visualization, processing with Statistical tools)

Quality Control Ready-to-use application for classification and recognition of samples in Q.C. applications

Program opening page

Method module

Channel description

Analysis in progress

Fingerprint

DFA Analysis represented by poligonals

3D View

3D View