Odor measuring apparatus
US6834530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0031
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention proposes an odor measuring apparatus capable of determining the similarity of the odor of an unknown sample with high objectivity and performing measurements with sensitivity similar to that of the human nose. According to a mode of the invention, an m-dimensional space is created from detection signals of m pieces of odor sensors, and a standard odor vector S1 representing the result of measurement of a standard odor and another vector Sx representing the result of measurement of an unknown sample are drawn in the space. Then, from the angle &thgr; between the two vectors, a degree of similarity is determined within the range from 0 to 100%, where the degree of similarity is corrected taking account of the difference in sensitivity between the odor sensor and the human nose. The degree of similarity of the unknown odor is calculated for each of plural standard odors measured beforehand, and which standard odor is the closest to the odor of the unknown sample is objectively shown by numeral values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.