Detection Algorithm

The patented Environics Ion Mobility Cell is a Modified Aspiration Type IMS. The IMS spectral fingerprints are measured with multiple electric fields, and selectivity is based on ion mass and charge (ion mobility). Airflow is continuous through the cell.

The surface of the Tin Oxide SCCell (Semi-Conductor Cell) absorbs sample gas molecules, which change its electrical resistance. Resulting resistance changes cause an output from this sensor.

Information from each sensor is integrated within the processing algorithm, which makes use of the decision-making capabilities of Learning Vector Quantization and 'Fuzzy Logic'. This 'intelligent' processing system leads to very accurate detection performance, and significantly enhances interferent rejection.