Minimum difference method: An approach for the discrimination of individual gases/odours using an integrated sensor array

Abstract

In this paper, the minimum difference (MD) method for the discrimination of individual gases/odours, using an integrated sensor array, has been presented. The decision of an unknown gas/odour is made by finding the minimum difference values between the training and sniffing mode parameters. The method has been illustrated successfully with the data set obtained in our laboratory for the four types of alcoholic beverage. It is envisaged that the MD method, in association with the gas sensor array, may find an application in food and/or beverage industries. © 1998 Elsevier Science Ltd. All rights reserved.