| abstract |
PURPOSE: To identify an odorant. n CONSTITUTION: Multiple SAW devices 1 having different sensory films on the surface respectively are provided for a volatile organic material, the resonance frequency of each SAW device changed when an odorant is. adsorbed on each sensory film is selectively detected by a frequency detecting means 3, and the detected response pattern is compared with the reference pattern stored in a computer in advance for pattern recognition. Quartz oscillators may be used in place of the SAW devices 1. n COPYRIGHT: (C)1992,JPO&Japio |