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Gas identification with tin oxide sensor array and self-organizing maps: adaptive correction of sensor drifts

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4 Author(s)
Marco, S. ; Dept. d''Electron., Barcelona Univ., Spain ; Ortega, A. ; Pardo, A. ; Samitier, J.

Low-cost tin oxide gas sensors are inherently nonspecific. In addition, they have several undesirable characteristics such as slow response, nonlinearities, and long-term drifts. This paper shows that the combination of a gas-sensor array together with self-organizing maps (SOM's) permit success in gas classification problems. The system is able to determine the gas present in an atmosphere with error rates lower than 3%. Correction of the sensor's drift with an adaptive SOM has also been investigated

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Instrumentation and Measurement, IEEE Transactions on  (Volume:47 ,  Issue: 1 )