Odor sensing system

Details Odor sensing system Odor sensing system

1991-05-22

1993-01-12

Williams, Hezron E.

Measuring and testing

Gas analysis

Odor

422 83, G01N 3100

Patent

active

051779943

ABSTRACT:
An odor sensing system is comprised of a sensor cell including a plurality of quartz resonator sensors aligned therein to detect odor by variation of resonance frequencies derived from weight loading on surfaces thereof, a recognition line including a neural network which recognizes data obtained by subtraction between an output signal of the sensor as frequency variation and, a reference signal selected by one of the output signals of the sensor. The sensor cell is thermostatically regulated by circulating thermostatic water therein to maintain the temperature higher than an advance line of the system. A sample to be recognized is supplied to the sensor cell in a form of vapor generated by blowing a standard gas onto the surface of the sample.

REFERENCES:
patent: 4770027 (1988-09-01), Ehara et al.

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