WO2008026763A1 - Capteur biometrique - Google Patents
Capteur biometrique Download PDFInfo
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- WO2008026763A1 WO2008026763A1 PCT/JP2007/067242 JP2007067242W WO2008026763A1 WO 2008026763 A1 WO2008026763 A1 WO 2008026763A1 JP 2007067242 W JP2007067242 W JP 2007067242W WO 2008026763 A1 WO2008026763 A1 WO 2008026763A1
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- Prior art keywords
- gas
- odor
- sensor
- molecular sieve
- molecular
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
Definitions
- the present invention relates to a device that detects a survivor by analyzing odors drifting in a disaster site, a device that performs a medical diagnosis by analyzing the body odor of the person being measured, and the characteristics of odors such as the body odor of the person to be authenticated.
- the present invention relates to a biometric sensor used in a device that ensures the security of electronic devices by judging. Background art
- rescue dogs have been used to find survivors at disaster sites, and have achieved great results.
- rescue dogs require training and have a long life, there is a need to mechanize the way to find survivors at disaster sites.
- Biometrics is a technology that recognizes a person using “individual information” such as physical characteristics and behavioral characteristics. At present, biometric sensors that use fingerprints, irises, and vein patterns are common and are widely used.
- hydrophobic group pattern recognition sensor developed by the inventors of the present invention (Koide, Masunaga, Hayashi, Toko, “Hydrophilic pattern of odorant for biometrics” Detection ", 1995 Electrical Engineering Society Kyushu Branch Joint Conference, 2 page 30, 05-2 P-19).
- oil droplets are used as a hydrophobic group absorption recognition unit for adsorbing odorous substances, and changes in fluorescence intensity of fluorescent probes in the oil droplets are observed by fluorescence analysis. Diphenylhexatriene is used as the fluorescent probe.
- Known example 1 uses oil droplets and detects odorous substances adsorbed on the oil droplets. Power The present invention differs from known example 1 in that no liquid is used, as described below. .
- known example 2 [Known example 2]
- Japanese Laid-Open Patent Publication No. 2000-148985 discloses a personal authentication system and states that biometric information including body odor may be used as information to be input. However, this document does not specifically describe the configuration of the input device such as body odor.
- Japanese Patent Laid-Open No. 2005-129032 discloses a biometrics authentication system. However, this document does not describe a specific configuration for inputting odor as authentication information.
- an object of the present invention is to provide a biometric sensor using odor and body odor, which has the advantage that it is possible to save the effort of a person receiving authentication by measuring biometric information remotely. Disclosure of the invention
- a biometric sensor comprising: a data processing unit for comparing the results;
- a second invention of the present invention is the biometric 1, Rix sensor used in the personal authentication system used in an electronic device, having the configuration of the first invention, wherein the subject is an authentication subject,
- the molecular sieve part adsorbs organic acids, alcohols or amines to release other gas components, and the gas detector selectively detects a predetermined gas component from the released gas component.
- the data processing unit includes a calculation unit and a storage unit, and a configuration obtained from a detection result obtained by preliminarily storing a composition ratio of the organic acid, the alcohol, or the amine for each authentication target person. Compared with the ratio, the determination on the person to be authenticated or the probabilistic determination is performed.
- the molecular sieve part separates the organic acids, alcohols or amines with different molecular sizes, or an acidic functional group or It is a gas filter that is separated depending on the presence or absence of an amino group, and an odor detector is used as the gas detection unit.
- the gas filter that separates according to the difference in the molecular size adsorbs the substance having an adsorption amount that depends on the molecular size.
- the filter force for gas is separated by the presence or absence of the above-mentioned acidic functional group or amino group.
- a substance provided with a strongly basic substance film or a strongly acidic substance film is provided on the surface. It is filtered by adsorbing to a substance, and the gas detector and the filter are individually connected. And a switching unit connected to the device.
- the biometric sensor of the present invention described above does not require the person to be authenticated to approach or touch the sensor extremely, and can measure biological information remotely, making it easy for survivor searches and medical diagnosis. Can be used for
- the biometric sensor of the present invention when used in a personal authentication system of an electronic device, the authentication result is utilized by transmitting the result of determination about the person to be authenticated or the result of probabilistic determination to the electronic device. Therefore, the security of information management can be enhanced by using it together with other authentication methods.
- FIG. 1 is a block diagram showing an overview of an authentication system 1 to which a biometric sensor of the present invention is applied.
- FIG. 2 is a block diagram showing the biometric sensor of the present invention.
- Fig. 3 is a block diagram showing an odor separation 'detection device that separates and detects odorous substances of organic acids and alcohols based on the difference in molecular size and the presence of acidic functional groups.
- FIG. 4 is a graph showing the sensitivity characteristics of ethanol of the oxide semiconductor sensor used in the odor separation / detection device of FIG.
- FIG. 5 is a graph showing 1 O Oppm pentanol adsorption time-sensor resistance data obtained by actually using the odor separation 'detection device of FIG.
- FIG. 6 is a graph showing the results of measuring a single component of l O O p pm ethanol as a sample using the odor separation 'detector shown in FIG.
- FIG. 7 is a graph showing the results of measuring a single component of lO O p pmpentanol as a sample using the odor separation 'detector shown in FIG.
- FIG. 8 is a graph showing the results when a 100 ppm acetic acid single component was measured as a sample using the odor separation / detection device of FIG. W 200
- FIG. 9 is a graph showing an example of detection of a two-component mixed sample of ethanol and pentaol using the odor separation / detection device of FIG.
- FIG. 10 is a graph showing a detection example of a three-component mixed sample of ethanol, pentanol and acetic acid using the odor separation ′ detection apparatus of FIG.
- Fig. 11 is a graph showing that acidic substances can be separated based on the presence or absence of acidic functional groups in the sample molecules using the flow path of alkali beads using the odor separation 'detector shown in Fig. 3. Yes, when the sample is 100 ppm ethanol and 100 ppm acetic acid, the concentration of acidic substances in the sample indicated by the odor sensor 12 is calculated.
- FIG. 12 is a graph showing the body odor measurement results of subjects A and B.
- Figure 13 shows the names of substances and their structural formulas that have been reported to differ in composition ratio depending on the type of MHC.
- Figure 14 (a) is a schematic diagram of a molecular sieve made of crystalline zeolite.
- Figure 14 (b) is a schematic diagram of nonporous glass beads coated with strontium hydroxide, which is a strong base.
- Figure 14 (c) is a schematic diagram for a thiol film that adsorbs amines.
- FIG. 15 (a) is a graph of resistance values shown by the odor sensor 12 for the sample gas 1 of body odor.
- FIG. 15 (b) is a graph of resistance values shown by the odor sensor 12 for the sample gas 2 of body odor.
- FIG. 15 (c) is a graph of resistance values indicated by the odor sensor 12 for the sample gas 3 of body odor.
- FIG. 15 (d) is a graph of the resistance value shown by the odor sensor 12 for the sample gas 4 of body odor.
- Figure 15 (e) shows the resistance shown by the odor sensor 12 for the sample gas 5 of body odor. It is a graph of a resistance value.
- FIG. 15 (f) is a graph of the resistance value indicated by the odor sensor 12 for the sample gas 6 of the body.
- Fig. 15 (g) is a graph of the resistance value shown by the odor sensor 12 for the sample gas 7 of body odor.
- FIG. 15 (h) is a graph of the resistance value shown by the odor sensor 12 for the sample gas 8 of body odor.
- Figure 16 (a) is a graph showing the correspondence between the minimum resistance value and the gas filter.
- Fig. 11 66 ((bb)) shows the relationship between the response curve (R) showing the time variation of the sensor resistance value and the sensor reference value curve (RO) with respect to Fig. 16 (a). It is a graph which shows a relationship.
- Fig. 16 (c) is a graph showing the relative concentration of odorous substances contained in the sample gas obtained based on Fig. 16 (b).
- FIG. 17 (a) is a graph showing the relative concentration of the odorous substance contained in the body odor sample gas 1 calculated based on FIG. 15 (a).
- FIG. 17 (b) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 2 calculated based on FIG. 15 (b).
- FIG. 17 (c) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 3 calculated based on FIG. 15 (c).
- FIG. 17 (d) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 4 calculated based on FIG. 15 (d).
- FIG. 17 (e) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 5 calculated based on FIG. 15 (e).
- FIG. 17 (f) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 6 calculated based on FIG. 15 (f).
- FIG. 17 (g) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 7 calculated based on FIG. 15 (g).
- FIG. 17 (h) is a graph showing the relative concentrations of odorous substances contained in the body odor sample gas 8 calculated based on FIG. 15 (h).
- Fig. 18 shows the main component analysis of the body odor sample gas data, except for the odor sensor resistance data when using the flow path through Al force rivies for the body odor sample gases 1 to 8. It is the graph obtained by. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a block diagram showing an overview of an authentication system 1 to which the present invention is applied.
- the electronic device is a personal computer
- enter the ID number and password from the keyboard compare with those registered in advance, and if you are a registrant, enter the personal computer. Allowing access is being done.
- patterns such as fingerprints, irises, retinas, and fingerprints may be used.
- voiceprints and DNA patterns There are also proposals to use voiceprints and DNA patterns.
- the electronic device is a controller related to starting a car, it is known that there is a system that can start the engine after performing fingerprint authentication in addition to authentication with the presence of a key. Yes.
- FIG. 2 is a block diagram showing the biometric sensor 20 of the present invention.
- the biometric sensor 20 includes an inhaler 2, an odor detector 3, and data processing. It consists of part 4.
- the odor detection unit 3 detects organic acids and alcohols contained in the inhaled air. This detection result can be used to classify the subject of authentication.
- the detection result varies as an absolute value. Since the relative value to other gas components is constant, the composition ratio of organic acids and alcohols is calculated. Further, this component ratio is registered in advance in the data processing unit 4 together with other indicators such as ID numbers as database power eves. This database is used to search for the person in question from other inputs, such as identification (ID) numbers.
- ID identification
- the data processing unit 4 determines that the corresponding person of the data is the subject of authentication.
- the data processing unit 4 includes a calculation unit 41 that performs comparison / determination and a storage unit (storage) 42 that stores data.
- the authentication result is utilized by transmitting the determination result by the calculation unit 41 to the electronic device 5 as a signal for permitting the operation.
- the use of the electronic device 5 is permitted.
- the electronic device 5 has a function of permitting use or a function of permitting access to some data in response to the authentication result of the authentication device.
- the data processing unit 4 can be configured as a program in the electronic device 5 instead of an independent device.
- the present invention performs biometrics by measuring the “scent type”.
- organic acids and alcohols that cause this “odor type” are detected separately based on the difference in molecular size and the presence or absence of acidic functional groups, and the composition ratio of these odorous substances is measured.
- piometrics by smell is performed.
- Fig. 3 shows an example of an odor separation / detection device that separates and detects odorous substances such as organic acids and alcohols based on the difference in molecular size and the presence of acidic functional groups.
- the biometrics inhalation section, molecular sieve section, and gas detection section of the present invention can be configured by the odor separation and detection apparatus shown in FIG.
- the molecular sieving part of the odor separation and detection apparatus in FIG. 3 corresponds to the molecular sieving part of the biometrics of the present invention. It consists of Air sucked from the suction portion 14 corresponding to the biometric suction portion of the present invention passes through the molecular sheep 6 or the alkali beads 7. For separation based on molecular size, Requirula sieve 6 is used, and for separation based on acidic functional groups, adsorption by Alforce Revise 7 is used.
- molecular sieve is a crystalline zeolite, which is an aluminosilicate with regular pores.
- Figure 14 (a) shows a schematic diagram. Since these pores are of molecular order size, molecular sheep is a nanostructure with adsorption sites of a specific molecular size, and has the function of a molecular sieve that selectively adsorbs substances depending on the pore diameter.
- the molecular sieve 6 that constitutes the molecular sieving part of the odor separation / detection device in Fig. 3 consists of 4 types of product categories: 3 A, 4 A, 5 A, and 13 X.
- A represents the approximate unit of pore size (angstrom)
- 3 A, 4 A, 5 A, and 13 X molecular sheep have diameters of about 3 A and 4 A, respectively.
- 5 A, 10 A pores and nanostructures with specific molecular size adsorption sites.
- a substance of less than 3 A is adsorbed and trapped in the pores of the molecular sieve, but a substance of 3 A or more cannot be trapped because it cannot enter the pores.
- 4 A molecular sieves substances below 4 A can be adsorbed, but substances above 4 A cannot be adsorbed.
- the main flow path 8 that constitutes the detection device is composed of a fluororesin tube such as Teflon (registered trademark), and the molecular sieve 6 and the Al force re-bead 7 are colored ⁇ ( ⁇ 4. Omm, length 5 Omm)
- the mass flow controller 9 is inserted before the pump 13 to control the gas flow rate. Control of the opening and closing of the solenoid valve 11 installed in each flow path is performed using a control device 10 (computer).
- Electromagnetic valve 1 By changing the flow path by controlling the opening and closing of 1, it is possible to filter odorous substances to gas components with molecular size 1 OA or more, 5 A or more, 4 A or more, 3 A or more it can. Then, by comparing the response of the odor sensor 12 described later, it is possible to measure how much of the odorous substance having a molecular size of 3 to 4 A,: to 5 A, 5 to 10 A is contained in the sample. In addition, by using the flow path to the alkali beads 7, it is possible to measure whether the molecule contains an acidic functional group.
- the detection of the separated odor substance is performed by the odor sensor 12.
- the odor sensor 12 corresponds to the biometric gas detection unit of the present invention.
- an oxide semiconductor type odor sensor (FI GARO TGS 2 600) is used. Yes.
- This oxide semiconductor type odor sensor is an oxide semiconductor gas sensor that utilizes the fact that the electrical resistance changes when a combustible gas is adsorbed to an oxide semiconductor heated to a high temperature. The resistance value of the sensor is measured with a digital multimeter.
- the odorous substance is detected by an electrochemical impedance gas sensor that diffuses the odorous substance in the electrolyte, an electrochemical gas sensor that detects a change in the contact potential difference, and a membrane having molecular selectivity.
- an electrochemical impedance gas sensor that diffuses the odorous substance in the electrolyte
- an electrochemical gas sensor that detects a change in the contact potential difference
- a membrane having molecular selectivity It is possible to use a quartz crystal (QCM) sensor in which the surface of the resonator is formed, or a sensor that utilizes the fact that the resonance frequency of surface plasmon resonance (SPR) changes in the surface state.
- QCM quartz crystal
- SPR surface plasmon resonance
- Oxide semiconductor gas sensors have sufficient sensitivity for body odor measurement, but the molecular selectivity of the sensor itself for organic gases is low.
- Figure 4 shows the ethanol sensitivity characteristics of the oxide semiconductor sensor used as the phrase sensor 12. Since the sensitivity characteristics vary from substance to substance, changes in resistance cannot be converted to gas concentrations if the measurement target is not clear. In the characteristic evaluation shown below, since the measurement is performed when multiple substances other than ethanol are mixed, the concentration when the measurement gas is assumed to be ethanol (ethanol equivalent concentration) is a guideline for the sample gas concentration. It was calculated as
- the parameters of the device were first determined as follows. Based on the measurement of odorous substance at 100 ppm, the amount of molecular sheep filled in the column was fixed at 0.30 g, and the air flow rate was fixed at 1 3 Om 1 Zm in. Under the set conditions, each sample gas was adsorbed for 1 ⁇ 0 seconds, and the change over time of the sensor resistance was measured.
- Fig. 5 shows the sensor resistance data for the adsorption time of 100 pm pentanol actually obtained.
- the oxide semiconductor gas sensor used exhibits a resistance of approximately 20 k ⁇ in clean air.
- the response curve obtained by the flow path system in which the sample gas reaches the sensor as it is without passing through the column is “None”, and the columns filled with 3A, 4A, 5A, and 13 X molecular sheep are filled.
- the response curves in each flow path system that passed through were displayed as “3AJ,” “4A,” “5A,” and “1 3 X,” respectively.
- the sample gas is not disturbed. Since the sensor surface was reached, the change in sensor resistance started immediately after the start of sample adsorption and was observed to decrease rapidly.
- the response curves for each channel system passing through the column are slow in response compared to the “none” channel system, indicating a slow decay. This is thought to be because the path of the sample gas is physically obstructed by passing through the packed column.
- the phrase substance is adsorbed on the molecular sieve, the odor substance is trapped in the molecular sheep pores, so that the gas sensor cannot be reached and the resistance value does not change.
- the odorous substance was measured by determining the ethanol equivalent concentration of the odorous substance using the characteristics.
- Figures 10 to 8 show the results of measurement using a single component of 100 ppm ethanol, pentanol, and acetic acid as samples.
- Fig. 6 to Fig. 8 (a) shows the ethanol conversion calculated from the sensor response when each column is filled with 3 A, 4 A, 5 A, and 13 X molecular sheep. Concentrations are shown as “3 A”, “4 A”, “5 AJ,“ 1 3 X ”.
- Figures 6 to 8 (b) show the concentration of odorous substances contained between each molecular size, and are calculated based on the data in Figures 6 to 8 (a). .
- molecular sieve “4 A” traps chemicals with a molecular size of 3 to 4 A, but molecular sieve “3 A” is a molecule of 3 A or more. Can't trap size chemicals. Therefore, the content of a chemical substance with a molecular size of 3 to 4 A in a sample is obtained by subtracting the value of “4A” from the value of “3A” in FIGS. 6 to 8 (a). be able to. Similarly, the concentrations of chemical substances having molecular sizes of 4 to 5A and 5 to 1 OA in Figs. 6 to 8 (b) were calculated.
- ethanol equivalent concentration results shown in Fig. 6 (b) it can be seen that the concentration of chemical substances between 4 and 5A is high.
- the molecular size of ethanol is 4.08 A as shown in Table 1.
- the odor separation 'detection device of the present invention allows separation by molecular size.
- ethanol is larger than 3 A pores, so assuming that it is not trapped by 3 A, the gas concentration of the sample gas can pass through a column packed with 3 A molecular sieves.
- the gas sensor response should show 100 p pm. However, the reason why the gas sensor response does not show 100 p in 3A in Fig.
- Figures 9 (a) and (b) show a sample of two components mixed with ethanol 'pentanol.
- Figs. 10 (a) and (b) show a sample of three components mixed with ethanol' pentanol 'and acetic acid. Shows the result for the pull.
- the concentration of 5-1 OA component is higher than the measurement result of ethanol alone in Fig. 6 (b), and only the pentanol of Fig. 7 (b)
- the concentration of the 4-5 A component is higher than in the case.
- pentanol can be detected independently in the portion of 5 to 10 A
- ethanol can be detected independently in the portion of 4 to 5 A.
- FIG. 11 shows the calculation result of the acidic substance concentration in each sample indicated by the odor sensor 12 for each sample of ethanol and acetic acid prepared at 100 ppm.
- the odor sensor 1 2 responds well to acetic acid, an organic acid, and shows a high concentration of acidic substances, but does not respond to non-acidic ethanol. Therefore, it was confirmed that the odor separation / detection device in Fig. 3 has sufficient separation and detection functions for acidic substances.
- Figure 12 shows the body odor measurement results of subjects A and B.
- subject A the odorant concentration of 4-5 A was lower than that of other molecular sizes, while in subject B, the opposite result was obtained.
- This can be regarded as a kind of odor pattern peculiar to an individual, and it can be expected that the “phrase type” is reflected. From this result, it was confirmed that the odor separation 'detection device in Fig. 3 has a function of analyzing that the composition ratio of odorous substances constituting body odor differs depending on the individual.
- Biometry of the present invention A status sensor can be configured.
- an odor separation and detection apparatus was fabricated using molecular sieves and alkali beads.
- the molecular sieving function is effective for both single-component samples and mixed-component samples of organic acids, alcohols, and mixed components, which are considered to be greatly related to the ⁇ odor type '' of body odor.
- the molecular sieve portion is composed of a total of five types of gas filter channels composed of alkali beads and four types of molecular sheep. Since the actual odor measurement needs to detect various gas components, it is possible to increase the number of gas filter channels according to the gas components to be detected by combining various gas filters. In addition, since the alkali beads have a weak acid adsorption capacity, the separation performance of the molecular sieve portion from the organic acids can be improved by increasing the amount of the alkali beads filled.
- a thiol film (Fig. 14 (c)) formed as a monomolecular film on a metal surface such as gold is used instead of the molecular sieve 6 or alkali beads 7 in Fig. 3.
- the odor separation / detection device shown in FIG. 3 can be constructed to constitute the molecular sieve part of the biometric sensor of the present invention.
- the molecular sieving part constituting the biometric sensor of the present invention has the purpose of selectively passing or adsorbing specific gas components contained in the air according to the air to be analyzed. It can be configured by combining multiple types of gas filters.
- the invention of the present application has a function that can extract the characteristics of odor such as body odor of the person to be authenticated and use it for authentication. Therefore, using the odor separation 'detector shown in Fig. 3, a personal authentication test was conducted as follows.
- each T-shirt after wearing is sealed in a separate sample bag, and heated at about 60 ° C for 2 hours using an open to volatilize the odor substance of each subject attached to the T-shirt.
- the sample bag was filled as a gas. In this way, eight types of sample gas were collected.
- samples 1 to 3 were prepared for the body odor of the subject A, and samples 4 and 5 were prepared for the body odor of the subject B. The correspondence between each subject and the collected sample gas is shown.
- the time for adsorbing each sample gas to the gas filter is 20 seconds, and before and after that, the odor sensor 1 2 is allowed to flow through the flow path 8 for 40 seconds.
- the odor substance adsorbed on the sample was washed, and the odor sensor 12 was restored to the standard state. Then, the flow path was switched, and the sample gas was adsorbed by another gas filter.
- the flow path was switched in the following order, and the resistance value of the odor sensor 12 was measured using sample gases 1-8.
- Figures 15 (a) to (h) show changes in the resistance value of sensor 12 for sample gases 1 to 8.
- the resistance value of the odor sensor 1 2 decreases when an odor substance touches the odor sensor 1 2, and the resistance value increases by washing the odor sensor 1 2 with odorless air. Therefore, as shown in Figs. 15 (a) to (h), many local minimum values are found in the time variation of the resistance value. These minimum values of resistance correspond to the flow path to the gas filter that adsorbs the sample gas.
- Figure 16 (a) shows the correspondence between the minimum resistance value and the gas filter.
- alkali beads 7 and molecular sheep 3 A, 4 A, 5 A, 1 3 X are respectively shown.
- the gas filter to be adsorbed is a molecular sieve and Al force rivies, it is indicated as “3 A + AB”.
- the relative concentration of odorous substances can be determined by the following calculation method.
- the resistance value of the odor sensor! The reference value on the reference value curve (RO) corresponding to the resistance value r is r.
- the logarithm l o g (c) of the gas concentration c is proportional to the absolute value of l o g (r. Zr). Where r and r.
- the gas concentration derived from only one point in the graph is vulnerable to noise. Therefore, the average value of (r./r) is calculated for the resistance value r before and after each minimum value of the sensor resistance value. Then, a logarithmic value is calculated for the average value by the following equation.
- T 2 is the time when the flow of odorless air started immediately after the introduction of the sample gas is completed.
- Fig. 16 (c) is a graph showing the relative concentration z of the odorous substance contained in the sample gas obtained from Eq. (1) based on Fig. 16 (b).
- the larger z is, the more the molecular size odorant corresponding to the gas filter is. Detected, indicating that the concentration is high.
- Figures 17 (a) to 17 (h) are included in sample gases 1 to 8 of body odor calculated based on Figures 15 (a) to 15 (h), respectively. It is a graph which shows the relative density z of an odor substance.
- PC 1 and PC 2 were determined by principal component analysis to determine the variable that maximizes the variance of the fluctuations in the data.
- al 2, al 3, al 4, and al 5 were determined to be 0.30254463, -0.81764344, 0.05372084, -0.02485475, and 0.48623272, respectively. Further, a 2 1, a 2 2, a 2 3, a 24, and a 2 5 were determined to be ⁇ 0.11814801, ⁇ 0.03334846, 0.81285744, ⁇ 0.56034606, and ⁇ 0.10101491, respectively. The values obtained in this way are shown in Fig. 18. Shown in
- reference numerals 1 to 8 represent the sample gases 1 to 8, and the closer the distance is to the sample, the closer the z distributions in those samples are to each other. From Fig. 18, it can be seen that samples taken from the same subject are located close together. And we can see that each subject has a different z distribution. The results show that the present invention has a function that can extract the characteristics of odor such as body odor of the person to be authenticated and use it for authentication.
- the data at the time of disaster is used as data stored in advance in the data processing unit.
- the data at the time of disaster is not the data of each individual but the data that focuses on the point that it is easy to distinguish humans from other animals, such as the smell of blood or body odor when not bathing.
- bad breath and body odor data for each disease is stored in advance in the data processing unit.
- the health condition of the person being measured is stored, and the health condition of the person being measured is judged by comparing the odor data and the body odor data actually measured at the time of diagnosis. be able to.
- the biometrics sensor of the present invention selectively detects a specific gas component contained in the air in the vicinity of the measurement subject, and compares the detection result with the detection result stored in advance. . Therefore, since the biometric sensor of the present invention can measure biological information remotely, it can be easily used for searching for survivors and medical diagnosis. In addition, the biometric sensor of the present invention can be used in a personal authentication system of an electronic device in combination with other authentication methods to improve information management security.
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US12/439,374 US8264326B2 (en) | 2006-08-31 | 2007-08-29 | Biometrics sensor |
JP2008532148A JP5187581B2 (ja) | 2006-08-31 | 2007-08-29 | バイオメトリクスセンサ |
EP07806697.4A EP2057945B1 (en) | 2006-08-31 | 2007-08-29 | Biometrics sensor |
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JP2006-235949 | 2006-08-31 | ||
JP2006235949 | 2006-08-31 |
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US (1) | US8264326B2 (ja) |
EP (1) | EP2057945B1 (ja) |
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JP2016186426A (ja) * | 2015-03-27 | 2016-10-27 | 株式会社ユー・エス・イー | におい識別システム |
JP2019132747A (ja) * | 2018-02-01 | 2019-08-08 | 株式会社住化分析センター | 水素ガス分析キット及び水素ガス分析方法 |
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JP5187581B2 (ja) | 2013-04-24 |
EP2057945B1 (en) | 2016-07-27 |
US20100007460A1 (en) | 2010-01-14 |
EP2057945A4 (en) | 2012-05-30 |
EP2057945A1 (en) | 2009-05-13 |
US8264326B2 (en) | 2012-09-11 |
JPWO2008026763A1 (ja) | 2010-01-21 |
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