An odor sensing system using QCM gas sensor array and pattern recognition technique is useful to identify various kinds of odors. A preconcentrator with variable temperature is promising to obtain further pattern separation after the appropriate temperature changes, whereas it has been so far used to enhance sensor sensitivity. After the preconcentrator collects the vapors, it is heated so that they can be thermally desorbed. The combination of the preconcentrator with the sensor array enhances the capability of discrimination among vapors since their desorption temperatures depend upon vapor kinds.
Revised: September 17, 2002 |
Published: March 8, 1999
Citation
Isaka Y., T. Nakamoto, T. Moriizumi, and J.W. Grate. 1999.Odor Sensing System Using Preconcentrator with Variable Temperature. In Solid-state sensors and actuators; Transducers '99, 2, 1642-1645. Tokyo, :Institute of Electrical Engineers of Japan.PNNL-SA-30666.