JP2000214084A - Method and apparatus for decision of test substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method and an apparatus in which a test substance is identified and in which the degradation state of the substance can be measured quantitatively and in a short time. SOLUTION: Near-infrared light or infrared reflected light which is reflected from the surface of the test substance is spectrally diffracted by a spectral apparatus 10. In a state such that the obtained spectral data on the test substance and the time-dependent degradation calibrated absorption spectrum group of various substances stored in advance in a database 21 are standardized by a standardization means 22, the time-dependent degradation calibrated absorption spectrum group is substance-retrieved by a retrieval means 23 on the basis of spectrum data on the test substance, and the substance is identified. In addition, by referring to the time-dependent degradation calibrated absorption spectrum group of the identified substance and that of a substance similar to the substance, the substance composition ratio, the degradation history time or the like of the test substance is calibrated and calculated by a calibration means 24. Its calculated result is outputted by an output means as a result in which the substance to be inspected is identified or the degradation state of the substance is converted into a numerical value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention measures spectral data obtained by analyzing near-infrared or infrared reflected light on the surface of a substance to be inspected, specifies the substance based on the spectrum data, and additionally determines the deterioration state. Also, the present invention relates to a method and apparatus for determining a substance to be inspected, which quantitatively determines a target substance. Therefore, the present invention is suitable for the industrial field of classifying and analyzing substances, and the renewing of deteriorated materials and surfaces of materials such as buildings and transportation vehicles.

[0002]

2. Description of the Related Art Renewal of deteriorated materials and material surfaces is important for extending the life of buildings, transportation bodies and the like. For example, paint is applied to buildings such as houses, bridges, and steel towers, and exteriors of transport bodies such as ships and railway vehicles. These exterior paints deteriorate over time after painting, and can no longer serve the role of protecting the interior of buildings, transportation bodies and the like. Therefore, they need to be repainted and protected before the life of the paint.

However, there is no rational method for judging the life of a paint, and it is necessary to perform visual judgment based on the experience of a paint expert or to periodically repaint the paint within a service life guaranteed by a paint maker. Was common. As a method of analytically measuring the deterioration of the paint, there is the following method. Evaluate the test sample coated with the paint after prolonged deterioration with a deterioration acceleration tester such as a sunshine weather meter or a xenon lamp light exposure tester, or in an actual exposure test where the test sample is actually exposed outdoors to sunlight or wind and rain. I do. As an evaluation item, instead of directly measuring physical chemical changes such as oxidation due to paint deterioration, indirect measurement using indexes such as changes in the physical properties of paint such as surface gloss retention, color difference, surface hardness etc. Thus, the above method was used to predict the relative performance difference and the service life of the paint.

Recently, measuring devices utilizing infrared or near-infrared light for discriminating substances such as plastics and paints have been developed and are being put into practical use (JP-A-6-210632 and JP-A-6-308022). , Chemistry and Software, Vo
l. 19, no. 1, p3 (1997)). The identification device has been applied to the separation of waste plastics and forensic analysis of automotive paints.However, paints and materials that have been degraded by exposure to the outdoors have undergone a chemical change in substances, making it difficult to identify substances. was there. In addition, there has been no method or apparatus capable of quantitatively identifying a substance to be inspected, measuring a deterioration state, and the like.

[0005]

It is difficult to identify materials by visual inspection, and it is sometimes difficult to identify deteriorated materials even with the above-mentioned identification device. In addition, judgment of deterioration of paint and life of materials by visual inspection requires many years of skill in evaluation, and lacks quantitativeness. Therefore, there is a difference in judgment of update time and lack of reliability. Updating within the service life guaranteed by paint and material manufacturers was a significant financial burden.

On the other hand, the method of analytically measuring the deterioration of the paint requires a long time and a complicated measurement operation, which requires a great deal of labor, even in the accelerated deterioration test. In addition, when it comes to the life expectancy of the inspection object, it is necessary to prepare the same test sample as the object, and since the measurement index is an indirect measurement rather than a direct measurement of deterioration, the same test sample is used to accelerate the deterioration. Even if you create and request test calibration data,
Life predictions were often inaccurate.

[0007] A method and an apparatus for analytically and accurately measuring the material identification and deterioration state of a material and the surface of the material in a short time are suitable methods despite social demands in terms of reliability and economy. And no equipment. Therefore, the present invention directly measures the deterioration by spectroscopically measuring the near-infrared or infrared reflected light of the inspection object because the temporal deterioration of the paint or the like as the inspection object involves a chemical change of the substance, A test substance that normalizes the obtained spectrum and the time-dependent calibration spectrum group of various substances previously input to the computer, searches the obtained spectrum from the time-dependent calibration spectrum group of various substances, and specifies the substance to be tested. An object of the present invention is to provide a determination method and a device therefor.

In addition, even if the specified substance and the composition ratio are different from each other, the substance composition ratio, deterioration history time, etc. of the inspection object are calibrated and calculated by referring to the time-dependent calibration spectrum group of the same composition substance. It is an object of the present invention to provide a method and apparatus for determining a substance to be inspected, which can identify the substance of the object to be inspected and the deterioration state in a short time by numerical values.

[0009]

In order to achieve the above object, a method for determining a substance to be inspected according to the present invention is characterized in that near-infrared or infrared reflected light on the surface of the substance to be inspected is spectrally separated by spectral means. In addition to obtaining the inspection target spectrum data, the time-dependent deterioration calibration spectrum group of various substances is stored in the spectrum group storage unit in association with the substance name in advance, and the inspection target search spectrum data and the time-dependent deterioration stored in the spectrum group storage unit are stored. In a state where the calibration spectrum group is standardized together, a substance is searched in the spectrum group storage means based on the spectrum data to be inspected to specify a substance of the inspection object.

In the invention according to the first aspect, near-infrared or infrared reflected light of the substance to be inspected is spectrally separated by the infrared spectroscopic means and stored in the spectrum group storage means in advance based on the obtained spectral data to be inspected. A substance is inspected from the group of the aging calibration spectra of various substances, and the substance to be inspected is specified. The term “aging calibration spectrum group” as used herein refers to a measurement of the spectrum over time from the new state in which a certain substance has not been degraded to the state in which it has reached the end of its life. It has a plurality of attached spectra, and enables a substance search of an inspection object and a calibration of a substance composition ratio, a deterioration history time, and the like.

According to a second aspect of the present invention, there is provided a method for judging a substance to be inspected, wherein near-infrared or infrared reflected light on the surface of the substance to be inspected is spectrally separated by spectroscopic means to obtain spectral data to be inspected. The deterioration calibration spectrum group is stored in the spectrum group storage unit in association with the substance name, and the inspection target spectrum data is also stored in a state where both the spectrum data and the time-dependent calibration group stored in the spectrum group storage unit are standardized. The spectrum group storage means is searched for a substance at the same time, and the substance of the inspection object is specified, and the substance and the substance and the composition ratio are different from each other with reference to the temporal deterioration calibration spectrum group of the substance group having the same composition. It is characterized in that the material composition ratio and the deterioration history time of the inspection object are calculated.

In the invention according to the second aspect, the near-infrared or infrared reflected light on the surface of the inspection object is separated by the infrared spectroscopy means and stored in the spectrum group storage means in advance based on the obtained inspection object spectrum. A substance to be inspected is specified by searching for substances from the aging calibration spectrum group of various substances, and the aging calibration spectrum group of the same group of substances having the same composition even if the substance and the composition ratio are different. The calibration is calculated by referring to the material composition ratio of the inspection object, the deterioration history time, and the like, and the material identification and the deterioration state of the inspection object are converted into numerical values.

Furthermore, in the invention according to claim 1 or 2, when searching for a substance of a time-dependent calibration spectrum group based on the spectrum data of the test object, the spectrum data of the test object and the time-dependent calibration spectrum group are standardized. The feature is that the substance search is performed after the search. Here, the normalization means that the spectrum of the entire spectral region is corrected so that the intensity of the portion where the intensity has the strongest change becomes a certain value, or the change portion of the spectrum where the intensity is a certain constant region. And the spectrum of the entire spectral region is modified so that the area surrounded by the baseline becomes a certain value, and further, the spectrum of the entire spectral region and the area surrounded by the baseline become a certain value. Modifying the spectrum to make it easier to retrieve and calibrate later.

Further, in the method for judging a substance to be inspected according to claim 3, in the invention according to claim 1 or 2, when standardizing the time-dependent deterioration calibration spectrum group of the spectrum data for inspection and spectrum group storage means, The first or second derivative spectrum of each spectrum data is obtained. According to the third aspect of the present invention, each spectrum is recalculated into a first derivative or a second derivative spectrum, thereby identifying a substance and calculating the area even if the baseline of the spectrum does not match the baseline of the database. Can be.

Furthermore, a method for determining a substance to be inspected according to claim 4 is the method according to any one of claims 1 to 3, wherein a least squares method, a regression analysis, It is characterized in that the search is performed using a method, multiple regression analysis, neural network method, or the like. In the invention according to claim 4, when searching for a time-dependent deterioration calibration spectrum group based on the inspection target spectrum data, each spectrum data is subjected to a least square method, a regression analysis method, a multiple regression analysis method, and a neural network method. By using and comparing, an accurate search can be performed in a short time.

According to a fifth aspect of the present invention, there is provided a method for judging a substance to be inspected, comprising: spectral means for dispersing near-infrared light or infrared reflected light on the surface of the object to be inspected and outputting spectrum data to be inspected;
Referring to the spectrum group storage means in which the time-dependent calibration spectrum groups of various substances are stored in advance in association with the substance names, and the spectrum group storage means based on the inspection target spectrum data output from the spectroscopic means. And a substance name specifying means for specifying a substance name to be specified.

According to the fifth aspect of the present invention, similarly to the above-described first aspect, based on the spectrum to be inspected obtained from the substance to be inspected, the time-dependent calibration of various substances stored in the spectrum group storage means in advance. A substance is retrieved from the spectrum group to specify a substance to be inspected. Further, in the invention according to claim 6, the substance name specifying means includes:
With reference to the spectrum group storage means based on the spectrum data to be inspected, a corresponding spectrum is searched from the time-dependent deterioration calibration spectrum group, and a search means for specifying the substance to be inspected, and the search means specified by the search means A calibration means for individually calculating a deviation between the substance time-dependent deterioration calibration spectrum group and the inspection target spectrum data, and calculating the deterioration history time of the inspection object as a function representing the deviation on a deterioration history time axis of the substance; It is characterized by having.

In the invention according to claim 6, the substance name of the inspection object can be specified, and the deviation between the time-dependent deterioration calibration spectrum group and the inspection object spectrum is individually calculated. By calculating the deterioration history time of the inspection target material based on the above, it is possible to accurately determine the life, the useful life, and the like. Still further, in the invention according to claim 7, the calibration means includes a time-dependent calibration spectrum group of the identified substance and a time-dependent calibration spectrum group of a substance group having the same composition as the substance even though the composition ratio is different. , And individually calculate the deviation between the two-time degradation calibration spectrum group and the spectrum data to be inspected, and calculate the deviation as a function expressed by the composition ratio axis of the substance and the degradation history time axis. It is characterized in that it is configured to calculate time.

In the invention according to claim 7, the time-dependent calibration spectrum group of the substance specified by the substance search and the time-dependent calibration spectrum of the substance group having the same composition as the specified substance even though the composition ratio is different. A group is extracted, and a deviation between each of the time-dependent deterioration calibration spectrum groups and the spectrum data to be inspected is individually calculated, and the composition ratio of the substance to be inspected can be specified based on the calculated deviation.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a basic configuration diagram showing an embodiment of the present invention. The present invention utilizes the fact that a test object has a spectrum in the near-infrared or infrared light region peculiar to a substance and that the change with time is based on a chemical change of the substance, and the change is in the near-infrared or infrared light range. It utilizes the fact that it appears as a change in the spectrum of a region, and is characterized by a spectrum signal analysis method. Spectrum analysis processing according to the present invention will be sequentially described below.

In FIG. 1, reference numeral 10 denotes an infrared spectroscope as spectroscopic means for spectroscopically reflecting near-infrared or infrared reflected light on the surface of the inspection object. Or a spectroscope for infrared spectrum spectroscopy, which totally or partially disperses light having a wavelength of 25.0 to 0.8 μm, detects light intensity in synchronization with the spectral wavelength, and converts this into an electric signal. By performing the conversion, the spectrum data to be inspected is output.

The near-infrared or infrared spectrum data to be inspected output from the infrared spectroscopy apparatus 10 is input to a substance determination apparatus 20 composed of, for example, a personal computer. The substance determination apparatus 20 includes a database 21 as a spectrum group storage unit that stores a time-dependent calibration spectrum group of various substances, a near-infrared or infrared inspection target spectrum data and a database 21 input from the infrared spectroscopy apparatus 10. Standardizing means 22 for performing standardization processing so that search and calibration processing based on the time-dependent deterioration calibration spectrum group data of various substances stored in the storage device can be easily performed.
And a spectrum that matches the spectrum data to be inspected standardized by the standardizing means 22.
Searching means 2 for searching from 1 and specifying the substance to be inspected
3 and a substance specified by the search means 23 and a time-dependent deterioration calibration spectrum group of a substance group having the same composition even if the composition ratio is different from the substance, and the substance composition ratio of the inspection object, the deterioration history time, etc. Calibration means 24 to calculate the material composition ratio calculated by the calibration means, the life expectancy and the like based on the degradation history time, identification material name, composition ratio, life, degradation history time and the like, such as a display or a printer Output means 25 for outputting to the output device 30.

Here, the database 21 is for calculating the material composition ratio of the inspection object, the deterioration history time, etc. in a short time. , Sunshine weather meter exposure deterioration acceleration test, xenon arc type exposure deterioration acceleration tester and / or metal halide exposure deterioration acceleration tester A group of aging calibration spectra of various substances obtained by measurement is stored. At this time, the spectrum for each deterioration history time of various substances is stored together with the deterioration history time, and the polymer and / or copolymer composition and composition ratio of various substances are also stored at the time of storage, and further, the outdoor exposure test of various substances and The life span confirmed by the accelerated test is also stored.

The normalizing means 22 suppresses a difference in spectrum intensity due to measurement conditions and the like, and facilitates retrieval and calibration in the next operation processing stage. The spectral data of the inspection object obtained from the inspection object and the time-dependent deterioration calibration group of various substances stored in the database 21 are used to adjust the spectrum of the entire spectral region so that the intensity of the portion where the absorption intensity has the strongest change becomes a certain value. To correct. Alternatively, the spectrum of the entire spectral region is corrected so that the area surrounded by the changing part of the certain spectral region and the baseline is a certain value. Further, normalization is performed using a method such as correcting the spectrum so that the area surrounded by the spectrum and the baseline of the entire spectral region has a certain value. Note that the time-dependent deterioration calibration spectrum group of various substances stored in the database may be stored in a state where the above-described normalization processing has been performed. In this case, only the inspection target spectrum data is standardized by the standardization unit 21. Become

However, in the case where the baseline of the spectrum obtained due to the form of the inspection object or the state of deterioration is unstable and not constant and has a gradient or unevenness, the following normalization processing is performed even if the above-described normalization processing is performed. In some cases, search processing and calibration processing in the arithmetic processing stage become difficult. In this case, before or after the normalization processing, the operation of performing the first or second differentiation of the spectrum can remove the inaccuracy due to the unstable baseline, thereby enabling more accurate search and calibration processing. Also in this case, the time-dependent calibration spectrum group of various substances stored in the database 21 may be stored in advance as a spectrum group obtained by performing the primary differentiation or the secondary differentiation.

Further, the search means 23 is stored in the database 21 based on the spectrum data to be inspected using an arithmetic processing method such as a least square method, a regression analysis method, a multiple regression analysis method, a neural network method, or the like. A substance search is performed on the time-dependent deterioration calibration spectrum group of various substances. That is, based on the spectrum data of the inspection object including the deterioration state of the inspection object, the most similar spectrum is searched and selected from the database of the time-dependent deterioration calibration spectrum group of various substances stored in the database 21. Since the most similar spectrum is a spectrum of a certain substance in a certain time-degraded state, it is easy to identify a certain substance as a substance to be inspected. Here, a commercially available program can be used for the various search processes.

Further, the calibration means 24 obtains numerical values such as the material composition ratio of the test object and the deterioration history time. Selected from the database, extract the time-dependent calibration spectrum group of the identified substance, individually calculate the deviation between the spectrum group and the obtained spectrum using the arithmetic processing method,
This deviation is used as a function represented by the deterioration history time axis of the substance, and the minimum point of this function is obtained by interpolation to calculate the deterioration history time of the inspection object.

Alternatively, a time-dependent calibration spectrum group of the identified substance and a time-dependent calibration spectrum group of a substance group having the same composition even if the composition ratio is different from the substance are extracted, and the spectrum is determined using the above-described arithmetic processing method. The deviation between the group and the obtained spectrum is calculated individually, and this deviation is used as a function represented by the composition ratio axis of the substance and the deterioration history time axis.The minimum point of this function is obtained by interpolation, and the substance composition ratio of the inspection object is obtained. , The deterioration history time is calculated.

Further, the output means 25 converts the identification substance name, the composition ratio, the life, the deterioration history time of the inspection object, and the like, and outputs them to the output device 30. When the identified substance is obtained by interpolation of the database 21, the life is also represented by a function of the composition ratio, and then the life is similarly converted by interpolation and output. In addition, when the relationship between the actual history years and the history time of the accelerated test is input to the database, the deterioration state of the inspection object can be converted into the history years, the service life, and the like and output. Alternatively, when the actual life and the life of the accelerated test have been input, it is also possible to output by converting the estimated life to the number of years of history, the number of years of service, etc., assuming linear approximation.

In the above configuration, the substance name specifying means includes at least the search means 23 and the calibration means 24.

[0031]

The following is a result of a material deterioration diagnosis actually performed. A test sample (clear coat layer having a thickness of 50 μm) was prepared by clear-coating a silicon-modified acrylic water-based paint using an iron plate coated with a chromium-plated back and side surfaces, and a metal halide exposure acceleration tester (irradiation intensity 6)
80 W / m ² , irradiation time 18 hours / day, water spray 1 minute /
(Accelerating conditions x 2 times / day), and exposed to a certain degradation history time to obtain an inspection object.

For the purpose of creating a database, a test sample prepared under the same conditions was subjected to an exposure acceleration test using a metal halide exposure acceleration tester under the same acceleration conditions. Measured with a spectrometer (Nireco, NIRSystems6500)
This is a group of calibration spectra for the deterioration with time of the silicone-modified acrylic water-based paint. FIG. 2 shows representative examples of these spectrum groups. In FIG. 2, a curve denoted by reference symbol L0 indicates a deterioration history time of 0 hour, a curve denoted by L1 indicates a deterioration history time of 296 hours, a curve denoted by L2 indicates a deterioration history time of 504 hours, and L3
The curve indicated by indicates the spectrum when the deterioration history time is 728 hours, and the curve indicated by L4 indicates the spectrum when the deterioration history time is 1045 hours.

The same test was carried out for an acrylic water-based paint having a life expectancy of 5 years, which was determined by an outdoor exposure test. A calibration spectrum group for deterioration with time of the acrylic water-based paint was prepared, and this is shown in FIG. In FIG.
The curve indicated by is the deterioration history time of 0 hours, the curve indicated by L1 is the deterioration history time of 120 hours, the curve indicated by L2 is the deterioration history time of 240 hours, and the curve indicated by L3 is the deterioration history time of 3 hours.
The curve indicated by L4 for 24 hours shows a spectrum when the deterioration history time is 500 hours.

In addition, styrene-acrylic, acrylic-
A group of calibration spectra of aging degradation of various paints such as urethanes was also input to a computer (Fujitsu, FMV-S167) and subjected to second-order differential transformation. A process of measuring a test object whose deterioration history time is unknown in the same manner as described above, performing a similar conversion process on the obtained test target spectrum, and comparing each spectrum in the database with a least square method to calculate a deviation. The spectrum with the smallest deviation was selected, and the substance and the history time of the spectrum were searched. As a result, the result obtained that the silicon-modified acrylic water-based paint having a history of 500 hours was most similar was obtained.

Further, in order to improve the accuracy of the history time, individual deviations between the time-dependent calibration spectrum group of the silicon-modified acrylic water-based paint and the spectrum data to be inspected are calculated, and the deviation is calculated as a function of the deterioration history time. After converging to a certain function, a certain function was differentiated to calculate the history time at which the deviation became the minimum value, and as a result, 550 hours was obtained. FIG. 4 shows a function that is most similar to the relationship between the deterioration history time and the deviation.

In the test sample of the silicone-modified acrylic water-based paint, the accelerated test had a history of deterioration of 1048 hours, and rust occurred. The life was entered as 16 years. Degradation history time 550
The time was converted to 8.5 years of outdoor exposure, and the output was 8.5 years of history. The service life was output for another 7.5 years.

Of the above operations, after the object to be inspected is measured by the spectroscopic device 10 and the obtained spectral data to be inspected is input to the computer, all the calculations are performed by the computer, and the required time is several seconds. Was. In addition,
In the above-described embodiment, the case where the substance of the paint is determined has been described.However, the present invention is not limited to this, and the aging calibration spectrum group and the composition of the identified substance have the same composition even if the composition ratio is different. A group of aging calibration spectra of a substance group is extracted, and the deviation between the spectrum group and the obtained spectrum is individually calculated using the above-mentioned arithmetic processing method, and this deviation is represented by a composition ratio axis of the substance and a deterioration history time axis. Function
The minimum point of this function is obtained by interpolation, and the material composition ratio of the inspection object and the deterioration history time are calculated to calculate the resin composition ratio and the deterioration history time of the material molded by mixing a plurality of resins. be able to.

Further, in the above-described embodiment, the case where the desktop type is applied as the computer has been described. However, the present invention is not limited to this. By using a small personal computer, it is possible to easily carry them to the site where the inspection target is located, and to easily measure the substance identification, deterioration state, and the like of the inspection target.

Further, in the above embodiment, the case where the spectrum data of the inspection object from the surface of the substance is used has been described. However, the present invention is not limited to this. By measuring the cross section of the inspection object, the inside of the inspection object can be measured. The substance identification and the state of deterioration can be measured.

[0040]

As described above, according to the first and fifth aspects of the present invention, the near-infrared or infrared reflected light of the object to be inspected is separated by the infrared spectroscopic means, and the spectrum of the object to be obtained is obtained. The substance to be inspected is identified by searching for substances from the time-dependent calibration spectrum group of various substances stored in advance in the spectrum group storage means based on the spectrum group. Even if there is, the effect that the substance can be accurately identified can be obtained. In addition, when performing a substance search for the aging calibration spectrum group based on the inspection target spectrum data, the substance search is performed after the inspection target spectrum data and the aging calibration spectrum group are standardized. An effect is obtained that collation of comrades can be performed easily and accurately.

Further, claim 2, claim 6, and claim 7
According to the invention according to the above, based on the inspection target spectrum obtained from the inspection target substance, the substance is retrieved from the temporal deterioration calibration spectrum group of various substances stored in the spectrum group storage means in advance to specify the substance of the inspection object. However, even if the substance and the composition ratio are different from each other, the calibration is calculated based on the substance composition ratio of the test object, the deterioration history time, etc. Can be converted into numerical values, and in addition to the effects of the inventions according to claims 1 and 5, the composition ratio, life, useful life, etc. of the substance can be obtained accurately. Can be

Further, according to the third aspect of the present invention, when standardizing a spectrum to be inspected and a group of calibration spectra with time degradation, each spectrum is recalculated into a first derivative or a second derivative spectrum, thereby obtaining the spectrum of the spectrum. The effect is obtained that the substance can be identified and the area can be calculated even if the baseline does not match the baseline in the database.

According to the fourth aspect of the present invention, when retrieving a time-dependent deterioration calibration spectrum group based on the spectrum data to be inspected, each spectrum data is subjected to a least squares method, a regression analysis method, a multiple regression analysis. Since the comparison is performed using the neural network method and the neural network method, it is possible to obtain an effect that a substance search can be accurately performed in a short time.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a basic configuration of an embodiment of the present invention.

FIG. 2 is a representative example of a near-infrared spectrum group of a silicon-modified acrylic water-based paint aged over time.

FIG. 3 is a representative example of a near-infrared spectrum group of an acrylic water-based paint aged over time.

FIG. 4 is a diagram in which a deviation between a spectrum of an inspection object and a time-dependent calibration calibration spectrum group of a retrieved substance (silicon-modified acrylic water-based paint) is plotted by deterioration history time, and fitted with a certain function.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Infrared spectroscopy apparatus 20 Substance identification deterioration diagnostic apparatus 21 Database 22 Normalization means 23 Search means 24 Calibration means 25 Output means 30 Output device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sadao Ibe 2 Asame Kasei Kogyo Co., Ltd., Fuji-shi, Shizuoka Prefecture, Asahi Kasei Kogyo Co., Ltd. F term (reference) 2G050 AA04 AA05 AA07 CA10 EB07 2G059 AA01 AA05 BB08 BB20 DD20 EE12 FF04 FF08 HH01 JJ01 KK01 MM01 MM02 MM05 MM09 MM10 MM12 MM17 PP01

Claims (7)

[Claims] 1. A near-infrared or infrared reflected light on a surface of a substance to be inspected is spectrally separated by a spectroscopic means to obtain spectrum data of the substance to be inspected. The spectrum group storage means is stored in the group storage means, and the spectrum group storage means is stored on the basis of the inspection target spectrum data in a state where both the inspection object search spectrum data and the time-dependent deterioration calibration spectrum group stored in the spectrum group storage means are standardized. A method for judging a substance to be inspected, comprising searching and identifying a substance of the object to be inspected. 2. A near-infrared or infrared reflected light on the surface of a substance to be inspected is spectrally separated by spectroscopic means to obtain spectrum data of the substance to be inspected. Storing in the group storage means, performing a material search of the spectrum group storage means based on the inspection target spectrum data in a state where both the spectrum data and the time-dependent deterioration calibration spectrum group stored in the spectrum group storage means are normalized. Identify the substance to be inspected, and determine the substance composition ratio and deterioration history time of the inspection object by referring to the time-dependent deterioration calibration spectrum group of the substance group having the same composition even if the substance and the composition ratio are different. A method for judging a substance to be tested, wherein the method is to calculate. 3. The method according to claim 1, wherein a first derivative or a second derivative spectrum of each spectrum data is obtained when standardizing the inspection target spectrum data and the aging calibration spectrum group of the spectrum group storage means. Item 3. The method for determining a substance to be tested according to Item 1 or 2. 4. The method according to claim 1, wherein a substance is searched based on the spectrum data to be inspected using a least squares method, a regression analysis method, a multiple regression analysis method, a neural network method, or the like. 3. The method for determining a substance to be tested according to any one of 3. 5. A spectroscopy means for spectrally outputting near-infrared or infrared reflected light on the surface of a substance to be inspected and outputting spectrum data to be inspected, and a time-dependent deterioration calibration group of various substances is stored in advance in association with the substance name. Spectrum group storage means, and substance name specifying means for specifying a corresponding substance name by referring to the spectrum group storage means based on the spectrum data to be inspected output from the spectroscopic means. Inspection target substance determination device. 6. The substance name identification means refers to the spectrum group storage means based on the spectrum data to be inspected, retrieves a corresponding spectrum from a time-dependent calibration calibration spectrum group, and identifies the substance to be inspected. Search means to
The deviation between the time-dependent degradation calibration spectrum group of the substance specified by the search means and the spectrum data to be inspected is individually calculated, and the deviation history time of the inspection object is calculated as a function expressing the deviation on the degradation history time axis of the substance. The apparatus for determining a substance to be inspected according to claim 5, further comprising at least calibration means for calculating. 7. The calibration means extracts a time-dependent calibration spectrum group of the identified substance and a time-dependent calibration spectrum group of a substance group having the same composition as the substance even though the composition ratio is different. It is configured to individually calculate the deviation between the calibration spectrum group and the spectrum data to be inspected, and calculate the composition ratio and the deterioration history time of the inspection object as a function expressing the deviation by the composition ratio axis of the substance and the deterioration history time axis. 7. The apparatus for judging a substance to be inspected according to claim 6, wherein: