Artificial Olfactory Systems (AOS) or electronic nose ISENose

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 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

Artificial versus natural olfactory system

ISE Nose2000 AOS operating system SAMPLE SENSORS 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 Humidity sensor Temperature sensor Metal-Oxide Gas Chemical Sensors Sensors chamber

16-Position Self-sampler Proprietary Design Inexpensive, easy-to-use Optimized for Quality Control activity on sample batches Completely SW-driven sample selection, data acquisition and cleaning 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 TEMPERATURE SENSOR HUMIDITY SENSOR AIR INLET AIR OUTLET MOS SENSORS

Working principle of MOS sensors ½ O 2 + (SnO 2-X )* O _ (SnO 2-X ) CO + O _ (SnO 2-X ) CO 2 + (SnO 2-X )*

SENSOR DATA TO THE PC SENSORS CHAMBER 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) 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