Odor measuring apparatus
AssigneeShimadzu Corporation
InventorsHiroshi Nakano, Junichi Kita
Life of this patent
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Abstract
In an odor measuring apparatus, a plurality of detection outputs with respect to a sample gas is obtained by a plurality of odor sensors having different response characteristics. In an odor fractionation processing section, based on the detection outputs, it is determined which one of a plurality of predetermined odor categories the odor of the sample gas belongs to. In case of calculating an odor index from the detection outputs, the same regression line can be utilized for the same odor category. An odor index calculating section utilizes regression coefficients determined in advance for each odor category, to thereby calculate the odor index. Accordingly, without using an organoleptic test by panels, the odor index can be obtained easily and accurately.
Claims8
An odor measuring apparatus, comprising:
- a plurality of detecting means having different characteristics and adapted to contact a sample gas for detecting odor components in the sample gas and providing detection outputs and a pattern of the odor components contained in the sample gas,
- odor fractionating means electrically connected to the detecting means and having a memory memorizing patterns of the odor components for typical odor categories in advance, said odor fractionating means determining that odor in the sample gas belongs to one of the odor categories memorized in the odor fractionating means based on the pattern of the odor components obtained from the detecting means, and
- computing means electrically connected to the detecting means and the odor fractionating means and having a memory memorizing regression lines determined in advance for the odor categories, said computing means calculating an index value regarding the odor in the sample gas based on the detection outputs obtained from the detecting means by using one of the regression lines determined in advance for the odor categories.
Dependencies are inferred from the claim text.