CN108780038B - Method for determining calibration coefficient of spectrometer, related device and storage medium - Google Patents
Method for determining calibration coefficient of spectrometer, related device and storage medium Download PDFInfo
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- CN108780038B CN108780038B CN201880001180.1A CN201880001180A CN108780038B CN 108780038 B CN108780038 B CN 108780038B CN 201880001180 A CN201880001180 A CN 201880001180A CN 108780038 B CN108780038 B CN 108780038B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/718—Laser microanalysis, i.e. with formation of sample plasma
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/13—Standards, constitution
Abstract
The application relates to the technical field of spectral measurement, and discloses a method and a device for determining a calibration coefficient of a spectrometer and electronic equipment. In the application, a spectrum of a detected substance detected by a spectrometer is obtained; identifying the detected substance according to the obtained spectrum, obtaining an identification result, and determining that the identification result meets a calibration starting condition; and determining a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance. The calibration coefficient of the spectrometer is determined according to the spectrum obtained by detection and the standard spectrum of the detected substance after the spectrum of the detected substance obtained by the detection of the spectrometer is determined to meet the calibration starting condition, and the spectrometer does not need to be returned to a factory or professional technicians to be invited to operate, so that the time is saved, and the labor consumption is reduced. Moreover, the spectrometer can be calibrated at any time in the using process of the spectrometer, the measuring precision of the spectrometer is ensured, and the measuring error caused by not calibrating the spectrometer for a long time is avoided.
Description
Technical Field
The present application relates to the field of spectral measurement technologies, and in particular, to a method for determining a calibration coefficient of a spectrometer, a related apparatus, and a storage medium.
Background
At present, spectrometers are widely applied in scientific research and practical production, and the types of spectrometers are many, such as raman spectrometers, fluorescence spectrometers, and Laser-Induced Breakdown Spectroscopy (LIBS). In order to realize the standardization of the spectrometer, the spectrometer needs to be subjected to spectrum calibration and radiation calibration when being out of field. The spectral calibration is related to the determination of key information such as molecules, chemical bonds and the like of an article to be detected, so that the spectral calibration of the spectrometer is particularly important.
The inventor finds that the horizontal coordinate of a spectrometer system can generate spectrum shift after the spectrometer is used for a long time in the process of researching the prior art, and if the small instrument deviation cannot be found in time, the measurement result can generate errors; in addition, if the spectrometer falls and vibrates during the use process, calibration failure can be caused, in such a case, the spectrometer is required to be returned to a factory or professional technicians are required to be invited to calibrate the spectrometer again so as to standardize the spectrometer, and therefore, time and labor are wasted.
Disclosure of Invention
An object of some embodiments of the present application is to provide a method, a related apparatus and a storage medium for determining a calibration coefficient of a spectrometer, so as to solve the above-mentioned problems.
One embodiment of the present application provides a method of determining a spectrometer scaling factor, comprising: obtaining the spectrum of the detected substance detected by the spectrometer; identifying the detected substance according to the obtained spectrum, obtaining an identification result, and determining that the identification result meets a calibration starting condition; and determining a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance.
The embodiment of the present application further provides an apparatus for determining a calibration coefficient of a spectrometer, including: the spectrum acquisition module is used for acquiring the spectrum of the detected substance detected by the spectrometer; the calibration starting determining module is used for identifying the detected substance according to the obtained spectrum, obtaining an identification result and determining that the identification result meets the calibration starting condition; and the calibration coefficient determining module is used for determining a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance.
An embodiment of the present application further provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to perform a method of determining spectrometer scaling factors as described in any of the method embodiments of the present application.
Compared with the prior art, the calibration method and the calibration device have the advantages that the spectrum of the detected substance obtained by detecting the spectrometer is obtained, the detected substance is identified, the calibration coefficient of the spectrometer is determined according to the spectrum obtained by detecting and the standard spectrum of the detected substance after the identification result meets the calibration starting condition, the calibration coefficient can be determined by detecting the detected substance, the spectrum instrument does not need to be returned to a factory or professional technicians are invited to operate, time is saved, and manpower consumption is reduced. Moreover, the spectrometer can be calibrated at any time in the using process of the spectrometer, the measuring precision of the spectrometer is ensured, and the measuring error caused by not calibrating the spectrometer for a long time is avoided.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a flow chart of a method for determining a spectrometer calibration coefficient in a first embodiment of the present application;
FIG. 2 is a flow chart of a method for determining a spectrometer calibration coefficient in a second embodiment of the present application;
FIG. 3 is a flow chart of a method for determining a calibration coefficient of a spectrometer according to a third embodiment of the present application;
FIG. 4 is a block diagram of an apparatus for determining the calibration factor of a spectrometer according to a fourth embodiment of the present application;
FIG. 5 is a block diagram of an apparatus for determining the calibration factor of a spectrometer according to a fifth embodiment of the present application;
fig. 6 is a diagram illustrating an example of the structure of an electronic device in a seventh embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, some embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The first embodiment of the application relates to a method for determining a calibration coefficient of a spectrometer, wherein an execution main body of the method can be the spectrometer or a server, and when the execution main body is the spectrometer, the determined calibration coefficient replaces the original calibration coefficient after the calibration coefficient of the spectrometer is determined, and is uploaded to the server for storage; when the execution main body is the server, the server sends the calibration coefficient to the spectrometer after determining the calibration coefficient of the spectrometer, and the spectrometer updates the original calibration coefficient according to the obtained calibration coefficient.
The specific process for determining the calibration coefficient of the spectrometer is shown in fig. 1, and comprises the following steps:
in step 101, a spectrum of a substance to be detected by a spectrometer is obtained.
Specifically, in this embodiment, the spectrometer detects the detected substance to obtain the spectrum of the detected substance, and if the process of determining the calibration coefficient of the spectrometer is performed on the spectrometer, the spectrometer can directly store the spectrum of the detected substance after the spectrum of the detected substance is obtained by detection, and the spectrometer sends the detected spectrum of the detected substance to the server for storage. When the spectrum of the detected substance is lost due to the operation error, the spectrometer can directly acquire the spectrum from the server without detecting again. If the process of determining the calibration coefficient of the spectrometer is executed on the server, the spectrometer sends the detected spectrum of the detected substance to the server, and the spectrum is stored by the server.
It should be noted that, the spectrometer may transmit the detected spectrum of the detected substance to the server in a wireless transmission or wired transmission manner, and receive the detected spectrum by the server.
In step 102, the detected substance is identified according to the obtained spectrum, an identification result is obtained, and it is determined that the identification result satisfies the calibration start condition.
Specifically, the detected substance is identified based on the obtained spectrum, and when the identification result is obtained, the correlation coefficient between the obtained spectrum and the standard spectrum of each standard substance stored in the database is calculated, respectively. And judging whether the maximum value of the calculated correlation coefficients is larger than a first preset threshold value or not, if so, determining that the detected substance is identified, otherwise, determining that the detected substance is not identified.
It should be noted that the type of the detected substance in this embodiment includes an unknown substance and a known substance, and the specific manner of determining that the recognition result satisfies the calibration initiation condition differs according to the type of the detected substance. If the detected substance is an unknown substance, when the unknown substance is identified and the maximum value of all correlation coefficients is determined to be larger than a second preset threshold value, starting calibration, wherein the second preset threshold value is larger than the first preset threshold value; if the detected material is a known material, calibration is started when the known material is not identified.
The correlation coefficient in the present embodiment represents the degree of similarity or matching between the obtained spectrum and the standard spectrum of each standard substance stored in the database. In calculating the correlation coefficient, the specified features in the obtained spectrum may be extracted, and the specified features of the standard spectra of the respective standard substances stored in the database may be extracted separately. For example, the specific feature may be a wavelength feature of a spectrum, and correlation coefficients between the wavelengths of the obtained spectrum and the wavelengths of the standard spectra of the respective standard substances stored in the database are calculated. The correlation coefficient is calculated by selecting a certain specified characteristic of the spectrum, so that the complexity of calculating the correlation coefficient is greatly simplified, and the speed of calculating the correlation coefficient is improved.
The first preset threshold in this embodiment may be set by the user according to the requirement of the identification precision, and the specific value and the value range of the first preset threshold are not limited in this embodiment.
For example, the first preset threshold value may be set to 0.6, that is, when the maximum value of each of the correlation coefficients is greater than 0.6, it is determined that the detected substance is recognized, that is, the standard spectrum matching the obtained spectrum exists in the database, and when the maximum value of each of the correlation coefficients is less than 0.6, it is determined that the detected substance is not recognized, that is, the standard spectrum matching the obtained spectrum does not exist in the database.
In step 103, a calibration coefficient is determined according to the obtained spectrum and a standard spectrum corresponding to the detected substance.
Specifically, the characteristic information of the obtained spectrum is extracted, the characteristic information of the standard spectrum is extracted, and the calibration coefficient is determined according to the characteristic information of the obtained spectrum and the characteristic information of the standard spectrum.
In a specific implementation, the obtained characteristic information of the spectrum includes peak information of the obtained spectrum, and the characteristic information of the standard spectrum includes peak information of the standard spectrum. In practical application, peak information of the standard spectrum and peak information of the obtained spectrum can be obtained by adopting a peak searching mode.
Specifically, polynomial fitting may be performed on the obtained peak value information of the spectrum and the peak value information of the standard spectrum, and the scaling coefficient may be determined according to a result of the polynomial fitting.
Compared with the prior art, the calibration coefficient of the spectrometer is determined according to the spectrum obtained by detection and the standard spectrum of the detected substance after the spectrum of the detected substance obtained by the detection of the spectrometer is obtained, the detected substance is identified and the identification result meets the calibration starting condition, so that the calibration coefficient can be determined by detecting the detected substance without returning the spectrometer or inviting professional technicians to operate, time is saved, and labor consumption is reduced. Moreover, the spectrometer can be calibrated at any time in the using process of the spectrometer, the measuring precision of the spectrometer is ensured, and the measuring error caused by not calibrating the spectrometer for a long time is avoided.
A second embodiment of the present application relates to a method for determining a calibration coefficient of a spectrometer, and when a detected substance is an unknown substance, the present embodiment specifically describes a manner in which the identification result is determined to satisfy the calibration start condition in the first embodiment, and adds a step of calculating a deviation before determining the calibration coefficient after determining that the identification result satisfies the calibration start condition. The specific flow of the method for determining the calibration coefficient of the spectrometer in the present embodiment is shown in fig. 2.
Specifically, in this embodiment, steps 201 to 204 are included, where step 201 is substantially the same as step 101 in the first embodiment, and step 204 is substantially the same as step 103 in the first embodiment, and details are not repeated here, and differences are mainly introduced below, and technical details not described in detail in this embodiment may be referred to the method for determining a calibration coefficient of a spectrometer provided in the first embodiment, and details are not repeated here.
After step 201, step 202 is performed.
In step 202, the detected substance is identified according to the obtained spectrum, an identification result is obtained, and if the detected substance is identified and the maximum value of the correlation coefficients is greater than a second preset threshold value, calibration is started.
Specifically, when the detected substance is an unknown substance, the calibration coefficient of the spectrometer does not necessarily need to be determined again after the detected substance is identified, because the deviation of the calibration coefficient may be relatively small in this case, and the requirement for calibration is not met. Only after the substance to be detected is identified and certain conditions are met will the calibration process be initiated.
In a specific implementation, a certain condition may be satisfied, and whether a maximum value of each correlation coefficient is greater than a second preset threshold is determined, where the second preset threshold is greater than the first preset threshold, and for example, when a value of the first preset threshold is 0.6, the second preset threshold may be set to 0.9. The second preset threshold may be set by a user according to the requirement of the spectrometer test precision, and the specific precision of the second preset threshold is not specifically limited in this embodiment.
When the substance to be detected is an unknown substance, the deviation of the calibration coefficient of the spectrometer at this time is not particularly large. The calibration coefficient can be determined at the same time as the detected substance is detected, and therefore, the process of automatically determining the calibration coefficient of the spectrometer can be called an automatic calibration process.
In step 203, the deviation of the characteristic information of the obtained spectrum from the characteristic information of the standard spectrum is calculated, and it is determined that the deviation is greater than a third preset threshold.
In a specific implementation, the absolute value of the difference between the peak information of the obtained spectrum and the peak information of the standard spectrum may be calculated, and the obtained absolute value of the difference is used as the deviation.
For example, a third preset threshold may be set to 0.1nm, the deviation is compared with the third preset threshold of 0.1nm, and when the deviation is determined to be greater than the third preset threshold of 0.1nm, it indicates that the original calibration coefficient of the spectrometer has a larger deviation coefficient, and then step 204 needs to be performed. In addition, the third preset threshold may be set by a user according to the requirement of the spectrometer test precision, and the specific precision of the third preset threshold is not specifically limited in this embodiment.
In step 204, a calibration coefficient is determined according to the obtained spectrum and a standard spectrum corresponding to the detected substance.
Compared with the prior art, the calibration coefficient of the spectrometer is determined according to the spectrum obtained by detection and the standard spectrum of the detected substance after the spectrum of the detected substance obtained by the detection of the spectrometer is obtained, the detected substance is identified and the identification result meets the calibration starting condition, so that the calibration coefficient can be determined by detecting the detected substance without returning the spectrometer or inviting professional technicians to operate, time is saved, and labor consumption is reduced. Moreover, the spectrometer can be calibrated at any time in the using process of the spectrometer, the measuring precision of the spectrometer is ensured, and the measuring error caused by not calibrating the spectrometer for a long time is avoided. In addition, when the detected substance is an unknown substance, calibration is started under the condition that the maximum value of all correlation coefficients is larger than a second preset threshold value, so that calibration is performed under the condition that the matching degree is high enough, and the calibration accuracy is ensured. Meanwhile, under the condition that the deviation of the obtained characteristic information of the spectrum and the characteristic information of the standard spectrum is larger than a third preset threshold value, a calibration coefficient is determined, so that an unnecessary calibration process is avoided, and the efficiency is improved.
A third embodiment of the present application relates to a method for determining a spectrometer calibration coefficient, and when a detected substance is a known substance, the present embodiment specifically describes a manner of determining that a recognition result satisfies a calibration start condition in the first embodiment, and a specific flow of determining a spectrometer calibration coefficient in the present embodiment is shown in fig. 3.
Specifically, in this embodiment, the method includes steps 301 to 303, where step 301 is substantially the same as step 101 in the first embodiment, and step 303 is substantially the same as step 103 in the first embodiment, and details are not repeated here, and differences are mainly introduced below, and details of the technique not described in detail in this embodiment may be referred to the method for determining a calibration coefficient of a spectrometer provided in the first embodiment, and are not repeated here.
After step 301, step 302 is performed.
In step 302, the detected substance is identified according to the obtained spectrum, an identification result is obtained, and calibration is started if the detected substance is not identified.
Specifically, when the detected substance is a known substance, the maximum value of the correlation coefficients obtained through judgment is smaller than a first preset threshold value, the detected substance is determined to be unidentified, and since the detected substance is known and the known detected substance exists in the database, if the detected substance is unidentified, the deviation of the calibration coefficient of the spectrometer is serious at this time, and the calibration coefficient needs to be determined again for the spectrometer.
It should be noted that, in the case that the deviation of the calibration coefficient of the spectrometer is relatively serious, the detected known substance may be a substance stored in an accessory of the spectrometer itself, for example, a known substance stored in a standard cap of the spectrometer, and the known substance may include a plurality of substances, and a user may actively select at least one of the known substances for calibration, so that the calibration process may be referred to as a process of actively determining the calibration coefficient of the spectrometer, also referred to as an active calibration process. Wherein a spectrometer standard cap is dedicated to the active calibration process, wherein one or more known substances for calibration may be placed.
In step 303, a calibration coefficient is determined according to the obtained spectrum and a standard spectrum corresponding to the detected substance.
Specifically, in this embodiment, in order to ensure the accuracy of the determined calibration coefficients, the spectra of at least two detected substances may be obtained by detection, the calibration coefficient corresponding to each detected substance is determined according to the processes from step 301 to step 303, and the final calibration coefficient of the spectrometer is determined according to the calibration coefficient corresponding to each detected substance. For example, an average value of the scaling coefficients corresponding to the respective substances to be detected may be calculated, and the average value may be used as the final scaling coefficient.
Compared with the prior art, the calibration coefficient of the spectrometer is determined according to the spectrum obtained by detection and the standard spectrum of the detected substance after the spectrum of the detected substance obtained by the detection of the spectrometer is obtained, the detected substance is identified and the identification result meets the calibration starting condition, so that the calibration coefficient can be determined by detecting the detected substance without returning the spectrometer or inviting professional technicians to operate, time is saved, and labor consumption is reduced. Moreover, the spectrometer can be calibrated at any time in the using process of the spectrometer, the measuring precision of the spectrometer is ensured, and the measuring error caused by not calibrating the spectrometer for a long time is avoided.
The fourth embodiment of the application relates to a device for determining the calibration coefficient of a spectrometer, and the specific structure is shown in fig. 4.
As shown in fig. 4, the apparatus for determining a spectrometer scaling factor comprises a spectrum acquisition module 401, a scaling start determination module 402 and a scaling factor determination module 403.
The spectrum obtaining module 401 is configured to obtain a spectrum of the detected substance detected by the spectrometer.
And a calibration start determining module 402, configured to identify the detected substance according to the obtained spectrum, obtain an identification result, and determine that the identification result meets a calibration start condition.
And a calibration coefficient determining module 403, configured to determine a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance.
It should be understood that this embodiment is an example of the apparatus corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
A fifth example of the present application relates to an apparatus for determining a calibration factor of a spectrometer, which is substantially the same as the fourth embodiment, and the specific structure is shown in fig. 5. Wherein, the main improvement lies in: when the detected substance is an unknown substance, the function of the calibration initiation determining module 402 is specifically described, and a deviation calculating module 404 is added.
The calibration start determining module 402 is configured to determine that a maximum value of the correlation coefficients is greater than a second preset threshold if it is determined that the detected substance is identified, and determine that the identification result meets the calibration start condition.
And a deviation calculating module 404, configured to calculate a deviation between the obtained characteristic information of the spectrum and the characteristic information of the standard spectrum, and determine that the deviation is greater than a third preset threshold.
It should be understood that this embodiment is an example of the apparatus corresponding to the second embodiment, and that this embodiment can be implemented in cooperation with the second embodiment. The related technical details mentioned in the second embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the second embodiment.
A sixth embodiment of the present application relates to an apparatus for determining a calibration coefficient of a spectrometer, which is substantially the same as the fourth embodiment, and the function of the calibration initiation determining module 402 will be described in detail when the detected substance is a known substance.
The calibration start determining module 402 is configured to determine that the recognition result meets the calibration start condition if it is determined that the detected substance is not recognized.
It should be understood that this embodiment is an example of an apparatus corresponding to the third embodiment, and that this embodiment can be implemented in cooperation with the third embodiment. The related technical details mentioned in the third embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the third embodiment.
The above-described embodiments of the apparatus are merely illustrative, and do not limit the scope of the present application, and in practical applications, a person skilled in the art may select some or all of the modules to implement the purpose of the embodiments according to practical needs, and the present invention is not limited herein.
A seventh embodiment of the present application relates to an electronic device, and a specific structure is shown in fig. 6. Comprises at least one processor 501; and a memory 502 communicatively coupled to the at least one processor 501. Wherein the memory 502 stores instructions executable by the at least one processor 501, the instructions being executable by the at least one processor 501 to enable the at least one processor 501 to perform a method of substance detection.
Wherein the electronic device comprises a spectrometer or a server.
In this embodiment, the processor 501 is a Central Processing Unit (CPU), and the Memory 502 is a Random Access Memory (RAM). The processor 501 and the memory 502 may be connected by a bus or other means, and fig. 6 illustrates the connection by the bus as an example. The memory 502 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the programs that implement the environment information determination method in the embodiments of the present application, in the memory 502. The processor 501 executes various functional applications of the device and data processing, i.e., the method of implementing the scaling factor described above, by executing non-volatile software programs, instructions, and modules stored in the memory 502.
The memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store a list of options, etc. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 502 may optionally include memory located remotely from processor 501, which may be connected to an external device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more program modules are stored in the memory 502 that, when executed by the one or more processors 501, perform the substance detection method of any of the method embodiments described above.
The product can execute the method provided by the embodiment of the application, has corresponding functional modules and beneficial effects of the execution method, and can refer to the method provided by the embodiment of the application without detailed technical details in the embodiment.
An eighth embodiment of the present application relates to a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, is capable of implementing the method for determining a spectrometer scaling factor as referred to in any of the method embodiments of the present application.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program instructing related hardware to complete, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice.
Claims (10)
1. A method of determining a spectrometer scaling factor, comprising:
obtaining the spectrum of the detected substance detected by the spectrometer;
respectively calculating a correlation coefficient between the obtained spectrum and a standard spectrum of each standard substance stored in a database, wherein the correlation coefficient is a correlation coefficient between the wavelength of the obtained spectrum and the wavelength of the standard spectrum of each standard substance stored in the database;
judging whether the maximum value of the calculated correlation coefficients is larger than a first preset threshold value or not, if so, determining that the detected substance is identified, otherwise, determining that the detected substance is not identified;
if the detected substance is identified and the maximum value of the correlation coefficients is larger than a second preset threshold value, determining that the identification result meets a calibration starting condition;
and determining a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance.
2. The method for determining the calibration coefficient of a spectrometer of claim 1, wherein said determining the calibration coefficient based on said obtained spectrum and a standard spectrum corresponding to said detected substance comprises:
extracting characteristic information of the obtained spectrum and extracting characteristic information of the standard spectrum;
and determining the scaling coefficient according to the obtained characteristic information of the spectrum and the characteristic information of the standard spectrum.
3. The method of determining spectrometer scaling coefficients according to claim 2, wherein said characteristic information of said obtained spectrum comprises peak information of said obtained spectrum;
the characteristic information of the standard spectrum includes peak information of the standard spectrum.
4. The method of determining spectrometer scaling coefficients according to claim 3, wherein said determining said scaling coefficients from said characteristic information of said obtained spectrum and said characteristic information of said standard spectrum comprises:
and performing polynomial fitting by using the obtained peak information of the spectrum and the peak information of the standard spectrum, and determining the calibration coefficient according to a result of the polynomial fitting.
5. The method for determining the calibration coefficient of a spectrometer of claim 1, wherein said determining that said identification satisfies the calibration enabling condition if said detected substance is a known substance comprises:
and if the detected substance is not identified, determining that the identification result meets the calibration starting condition.
6. The method for determining the calibration coefficient of a spectrometer of claim 1, wherein if the detected material is an unknown material, before determining the calibration coefficient according to the characteristic information of the spectrum obtained by the detection and the characteristic information of the standard spectrum, the method further comprises:
calculating the deviation of the characteristic information of the obtained spectrum and the characteristic information of the standard spectrum, and determining that the deviation is greater than a third preset threshold value.
7. An apparatus for determining spectrometer calibration coefficients, comprising:
the spectrum acquisition module is used for acquiring the spectrum of the detected substance detected by the spectrometer;
the calibration starting determining module is used for respectively calculating correlation coefficients between the obtained spectrum and standard spectra of each standard substance stored in a database, judging whether the maximum value of the calculated correlation coefficients is larger than a first preset threshold value, if so, determining that the detected substance is identified, otherwise, determining that the detected substance is not identified; the calibration starting condition is determined to be met by the identification result if the detected substance is identified and the maximum value of the correlation coefficients is larger than a second preset threshold value, wherein the correlation coefficients are the correlation coefficients between the wavelength of the obtained spectrum and the wavelength of the standard spectrum of each standard substance stored in the database;
and the calibration coefficient determining module is used for determining a calibration coefficient according to the obtained spectrum and the standard spectrum corresponding to the detected substance.
8. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of determining spectrometer scaling factors of any of claims 1 to 6.
9. The electronic device of claim 8, wherein the electronic device is a spectrometer or a server.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of determining spectrometer scaling coefficients according to any one of claims 1 to 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/087706 WO2019222888A1 (en) | 2018-05-21 | 2018-05-21 | Method for determining calibration coefficient of spectrometer, related apparatus and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108780038A CN108780038A (en) | 2018-11-09 |
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| NZ300915A (en) * | 1995-02-09 | 1998-12-23 | Foss Electric As | Method for standardizing a spectrometer generating an optical spectrum from a sample |
| JP2003014628A (en) * | 2001-07-02 | 2003-01-15 | Ishikawajima Harima Heavy Ind Co Ltd | Calibration method for quantitative analysis |
| TWI428581B (en) * | 2010-12-13 | 2014-03-01 | Ind Tech Res Inst | Method for identifying spectrum |
| CN102788643B (en) * | 2012-07-13 | 2014-03-12 | 中国科学院长春光学精密机械与物理研究所 | Method for calibrating ontrack high-precision optical spectrum of space remote sensing optical spectrum instrument |
| CN102818630B (en) * | 2012-07-27 | 2014-10-08 | 中国资源卫星应用中心 | Spectrum calibration method of interference type imaging spectrometer |
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| CN105043411B (en) * | 2015-06-01 | 2018-02-06 | 中山大学 | Calibrating method is simulated and intersected to high spatial resolution panchromatic channel absolute calibration coefficient |
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