BIOMETRICS SENSOR

• US 20100007460A1
• Filed: 08/29/2007
• Published: 01/14/2010
• Est. Priority Date: 08/31/2006
• Status: Active Grant

• Current Assignee: Kyushu University, Use Company Limited (Lifetime Brands Incorporated)
• Original Assignee: Kyushu University, Use Company Limited (Lifetime Brands Incorporated)
• Inventors: Yoshihiro, Bunpei, Hayashi, Kenshi
• Granted Patent: US 8,264,326 B2
• Time in Patent Office: Days
• US Class Current: 340/5.520
• CPC Class Codes: A61B 5/117 Identification of persons methods or arrangements for recognising patterns, e.g. fingerprints, G06F18/00, G06V40/00; identification of persons by analysing their voice or speech G10L17/00
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints

Abstract

A biometrics sensor includes a portion for sucking air, a molecular sieve portion for selectively passing or adsorbing specific gas contained in the air, a gas detecting section for detecting the concentration of gas passed through the molecular sieve or the remaining gas, and a data processing section for comparing the detection result with a prestored detection result, wherein the gas detecting section selectively detects predetermined gas, and the data processing section performs determination or probabilistic determination on an authentication object person by comparing the composition ratio of gas for each authentication object person with a prestored composition ratio.

Claims

1. A biometrics sensor comprising:

a sucking section that sucks air in the vicinity of a measurement object person;

a molecular sieve portion that selectively passes or absorbs a specific gas component contained in the sucked air;

a gas detecting section that detects a concentration of a constituent component of gas passed through the molecular sieve portion or the specific gas component selectively passed through the molecular sieve portion or the specific gas component selectively absorbed into the molecular sieve portion and remaining in the gas passed through the molecular sieve portion; and

a data processing section that compares the detection result of the gas detecting section and a prestored detection result.

2. The biometrics sensor according to claim 1,

wherein the biometrics sensor is used in a personal authentication system used in an electronic hardware,

the measurement object person is an authentication object person,

the molecular sieve portion absorbs organic acids, alcohols or amines and discharges other gas components,

the gas detecting section selectively detects a predetermined gas component from the discharged gas components, and

the data processing section includes an operation section and a storage section, and compares a composition ratio of organic acids, alcohols or amines for each authentication object person with a composition ratio obtained from the prestored detection result to perform determination or probabilistic determination on the authentication object person.

3. The biometrics sensor according to claim 2,

wherein the molecular sieve portion is a filter for gas that separates the organic acids, the alcohols or the amines based on a difference in molecule sizes, or a filter for gas that separates the organic acids, the alcohols or the amines based on the presence or absence of an acid functionality or an amine group, and

a smell detector is used as the gas detecting section.

4. The biometrics sensor according to claim 2 or 3,

wherein the filter for gas that separates the organic acids, the alcohols or the amines based on the difference in the molecule sizes has a configuration where each of filters comprising absorptive materials having absorption amounts depending on the molecule sizes is arranged in parallel for every different molecule size,

the filter for gas that separates the organic acids, the alcohols or the amines based on the presence or absence of the acid functionality or the amine group absorbs the organic acids, the alcohols or the amines to a material having a strongly basic material film formed on a surface thereof or a material having a strongly acidic material film formed on a surface thereof to filtrate the gas, and

the biometrics sensor further comprises a switching section that individually connects the gas detecting section and each of the filters.