Sensor arrays with only one or several transducer principles? the advantage of hybrid modular systems

摘要

Artificial olfaction by means of "electronic noses" aims at the determination of chemical features to characterize molecules,odors,environemtal conditions,process parameters etc.In order to achieve sufficient discriminatin a broad spectrum fo indepentdent features has to be determined.Since the choice of suitable materials for each ndividual transducer is limited,different transducers have to be ocmined in a sensor system to obtain a sufficiently broad disc4rimination power.This is illustrated for typical examples chosen from the food and textile industries which illustate the advantage of such "hybrid modular systems".