Title :
Versatile headspace and electronics for measurements with gas sensor arrays
Author :
Fort, A. ; Gregorkiewitz, M. ; Machetti, N. ; Rocchi, S. ; Ulivieri, N. ; Vignoli, V. ; Faglia, G.
Author_Institution :
Dipt. di Ingegneria dell´´Inf., Siena Univ., Italy
Abstract :
A new multisensor headspace and electronics for gas detection are presented. The system is PC-based and fully software controllable and reconfigurable. It was designed to allow for a very versatile use with different metal oxide sensor elements. In particular, the system supports different measuring techniques such as sensor impedance measurement in a frequency range spanning from DC to 15 MHz, and sensor gas sensitivity measurement when the temperature follows an arbitrary-defined trend. Some preliminary results concerning wine classification are also presented
Keywords :
array signal processing; chemistry computing; computerised instrumentation; gas sensors; pattern classification; principal component analysis; radial basis function networks; sensor fusion; signal processing equipment; transient response; PC-based system; PCA; RBF network; aroma classification; electronics; gas sampling unit; gas sensitivity measurement; gas sensor arrays; metal oxide sensor elements; multisensor headspace; probabilistic neural net; reconfigurable system; sensor impedance measurement; signal conditioning; software controllable; versatile headspace; wine classification; Chemical analysis; Chemical elements; Chemical sensors; Control systems; Frequency measurement; Gas detectors; Impedance measurement; Sensor arrays; Sensor systems; Temperature sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848716
