Vk. Singh et al., DISCRIMINATION OF INDIVIDUAL GASES ODOURS USING POLAR PLOT OF AN INTEGRATED THICK-FILM SENSOR ARRAY/, Microelectronics, 27(6), 1996, pp. 531-537
A simple discrimination technique for detection and identification of
individual gases/odours using a polar plot based on response of an int
egrated sensor array is presented. The responses of an array of eight
integrated sensors are used to generate the desired pattern. The requi
red pattern is generated by taking the normalized response of the sens
ors (normalization with reference to the response of the first sensor)
. For the identification of gases/odours, the data set is generated by
taking the opposite angle of adjacent sensors in training mode and co
mparing with the data set obtained in the sniffing mode. The suggested
method has been validated using experimental data for butanol, methan
ol and propanol. (C) 1996 Elsevier Science Ltd.