Odor identifying apparatus and method

• US 4,884,435 A
• Filed: 11/17/1988
• Issued: 12/05/1989
• Est. Priority Date: 11/17/1987
• Status: Expired due to Term

• Current Assignee: New Cosmos Electric Co., Ltd.
• Original Assignee: Katsuo Ehara
• Inventors: Ehara, Katsuo
• Primary Examiner(s): Williams, Hezron E.
• Application Number:
  US07/272,465
• Time in Patent Office: 383 Days
• Field of Search: 73/23, 73/27, 340/632, 340/634, 422/83, 422/98
• US Class Current: 73/23.34
• CPC Class Codes: G01N 33/0031 comprising two or more sensors, e.g. a sensor array

Abstract

An odor identifying apparatus comprising a gas sensor unit including at least two sensors having different characteristics for simultaneously detecting odorous components arising from a sample and outputting detection signals, a display device for displaying detection results from the sensor unit as a single output signal, and an ozone gas generator for supplying ozone gas into a chamber in which the sample is placed. An odor identifying method is also disclosed which identifies odorous components by using this apparatus.

Claims

1. An odor identifying apparatus comprising:

a gas sensor unit including at least two sensors having different characteristics for simultaneously detecting odorous components arising from a sample and outputting detection signals; and

display means for displaying detection results from said sensor unit as a single composite output signal representing a ratio between outputs from said respective gas sensors.

wherein an ozone gas generator is provided for supplying ozone gas into a chamber in which said sample is placed.

2. An odor identifying apparatus as claimed in claim 1, further comprising a clean gas injector for supplying a clean gas into said chamber.

3. An odor identifying apparatus as claimed in claim 1, further comprising a sample holder for supporting said sample, said sample holder including heating means.

4. An odor identifying apparatus as claimed in claim 1, wherein said display means is an X-Y recorder.

5. An odor identifying apparatus as claimed in claim 4, wherein said X-Y recorder gives a display by incorporating a time factor.

11. An odor identifying apparatus as claimed in claim 2, further comprising a sample holder for supporting said sample, said sample holder including heating means.

12. An odor identifying apparatus as claimed in claim 2, wherein said display means is an X-Y recorder.

6. An odor identifying method comprising the steps of:

placing a sample on a sample holder;

simultaneously detecting odorous components arising from said sample with at least two gas sensors included in a gas sensor unit and having different characteristics, and outputting detection results; and

displaying said output signals at display means as a single composite output signal representing a ratio between outputs from said respective gas sensors,

wherein, prior to detecting said odorous components, ozone gas generated by an ozone gas generator is supplied into a chamber in which said sample is placed.

7. An odor identifying method as claimed in claim 6, wherein said odorous components are detected by said gas sensors while heating said sample with heating means included in said sample holder.

8. An odor identifying method as claimed in claim 6, wherein a clean gas is supplied by a clean gas injector into said chamber after ozone gas is generated by said ozone gas generator.

9. An odor identifying method as claimed in claim 6, wherein said display means is an X-Y recorder.

10. An odor identifying method as claimed in claim 9, wherein said X-Y recorder gives a display be incorporating a time factor.

13. An odor identifying method as claimed in claim 7, wherein a clean gas is supplied by a clean gas injector into said chamber after ozone gas is generated by said ozone gas generator.

14. An odor identifying method as claimed in claim 7, wherein said display means is an X-Y recorder.