CN111766216A - Near infrared spectrum-based white spirit sample testing system and testing method - Google Patents
Near infrared spectrum-based white spirit sample testing system and testing method Download PDFInfo
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- CN111766216A CN111766216A CN202010453235.1A CN202010453235A CN111766216A CN 111766216 A CN111766216 A CN 111766216A CN 202010453235 A CN202010453235 A CN 202010453235A CN 111766216 A CN111766216 A CN 111766216A
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 238000002329 infrared spectrum Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 10
- 238000010835 comparative analysis Methods 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 235000019640 taste Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
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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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
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Abstract
The invention discloses a liquor sample testing system and a liquor sample testing method based on near infrared spectrum, relates to the technical field of liquid sample testing, and solves the problem that the existing liquor sample grade testing is difficult to test in batches due to low accuracy and high cost, and the key points of the technical scheme are as follows: the device comprises a light source unit, a prism unit, a sample disc unit, a light splitting unit, a detection unit and a control terminal; the signal output end of the control terminal is connected with the signal input ends of the prism unit, the sample disc unit and the light splitting unit, the signal output end of the detection unit is connected with the signal input end of the control terminal, the control terminal comprises a display unit, a database, a data processing unit and a control unit, spectrogram data of the liquor sample is obtained by utilizing the near infrared spectrum technology, the liquor grade is quickly judged through mode recognition software, the judgment speed and the judgment accuracy of the liquor grade are improved, meanwhile, the test cost is reduced, and basic conditions are provided for batch test of the liquor sample.
Description
Technical Field
The invention relates to the technical field of liquid sample testing, in particular to a liquor sample testing system and a liquor sample testing method based on near infrared spectrum.
Background
White spirit has a long history in China, is one of important traditional industries in China, and makes great contribution to national economic construction for many years. The brewing industry is rapidly developed, and the average annual growth rate is more than 10%. The main components of the white spirit are ethanol and water (two components account for more than 99 percent), and other trace components account for about 1 percent and comprise esters, acids, aldehydes and other substances, and the substances accounting for about 1 percent form different fragrance types and tastes of the white spirit and also form different levels and grades of the white spirit.
In order to realize the judgment of the grade of the white spirit, the grade is mainly determined according to the taste or the data result by tasting by a liquor taster or carrying out full analysis on main indexes in the liquor taster through large-scale precision equipment at present. The tasting mode has certain uncertainty, a high-level wine taster is difficult to identify at any time, a large-scale instrument analysis not only needs skilled operators, but also has relatively high analysis period and cost. The near infrared spectrum is electromagnetic radiation wave between visible light (Vis) and Mid Infrared (MIR), the frequency combination of the vibration of hydrogen-containing groups (O-H, N-H, C-H) in organic molecules is consistent with the absorption area of frequency doubling at all levels, the characteristic information of the hydrogen-containing groups in the organic molecules in a sample can be obtained by scanning the near infrared spectrum of the sample, and the analysis of the sample by utilizing the near infrared spectrum technology has the advantages of convenience, rapidness, high efficiency, accuracy, lower cost, no damage to the sample, no consumption of chemical reagents, no environmental pollution and the like.
Therefore, how to design a white spirit sample testing system and a testing method based on near infrared spectrum is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a white spirit sample testing system based on near infrared spectrum, which utilizes the near infrared spectrum technology to obtain spectrogram data of a white spirit sample, and quickly judges the grade of white spirit through pattern recognition software, thereby not only improving the judgment speed and accuracy of the grade of white spirit, but also reducing the testing cost and providing basic conditions for batch testing of the white spirit sample.
The technical purpose of the invention is realized by the following technical scheme: a white spirit sample test system based on near infrared spectrum comprises a light source unit, a prism unit, a sample tray unit, a light splitting unit, a detection unit and a control terminal; the signal output end of the control terminal is connected with the signal input ends of the prism unit, the sample disc unit and the light splitting unit, the signal output end of the detection unit is connected with the signal input end of the control terminal, and the control terminal comprises a display unit, a database, a data processing unit and a control unit; wherein the content of the first and second substances,
the light source unit is used for emitting near infrared radiation rays with different wavelengths to the prism;
the prism unit is used for dividing the near infrared radiation into different test wave bands;
the sample disc unit is used for irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected;
the light splitting unit is used for removing stray light in the light to be detected;
the detection unit is used for detecting the light intensity of the light to be detected after the stray light is removed, converting the light intensity signal into an electric signal and transmitting the electric signal to the display unit;
the display unit is used for displaying the electric signals as corresponding detection spectrogram signals;
the database stores liquor classification grades and standard near-infrared test spectrogram data corresponding to the liquor grades;
the data processing unit is used for calling the detection spectrogram signal and the standard near-infrared test spectrogram data, performing comparative analysis and classification on the detection spectrogram signal and the standard near-infrared test spectrogram data, and outputting a corresponding grade result of the white spirit sample to be detected;
and the control unit is used for generating a control command for realizing the automatic operation of the test system.
The invention is further configured to: the sample disc unit comprises a sample vacancy disc to be detected, a sample placing hole, a detected sample vacancy disc and a sampling mechanical arm; wherein the content of the first and second substances,
the to-be-detected sample vacancy disc is used for storing to-be-detected sample bottles;
the sample placing hole is used for placing the sample bottle to be tested on the irradiation paths of the different test wave bands;
the tested sample vacancy disc is used for storing tested sample bottles;
and the sampling mechanical arm is used for placing the sample bottle to be tested stored in the sample vacancy disc to be tested in the lofting hole according to the control command of the control unit and placing the sample on the lofting hole into the corresponding tested sample vacancy after the test is finished.
The invention is further configured to: the number of the vacant sites of the sample vacant site disc to be detected is any one of 6, 9, 20 and 32 vacant sites which are distributed in an arrangement manner.
The invention also aims to provide a liquor sample testing method based on the near infrared spectrum, which is characterized in that the near infrared spectrum technology is utilized to obtain spectrogram data of a liquor sample, and the liquor grade is judged rapidly through pattern recognition software, so that the liquor grade judging speed and the liquor grade judging accuracy are improved, the testing cost is reduced, and basic conditions are provided for batch testing of the liquor sample.
The technical purpose of the invention is realized by the following technical scheme: a white spirit sample testing method based on near infrared spectrum comprises the following steps:
s1: emitting near infrared radiation rays with different wavelengths to the prism by using a light source;
s2: dividing the near infrared radiation into different test wave bands through a prism;
s3: irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected;
s4: removing stray light in the light to be detected;
s5: detecting the light intensity of the light to be detected after the stray light is removed, converting a light intensity signal into an electric signal and transmitting the electric signal to a display unit;
s6: displaying the electrical signals as corresponding detection spectrogram signals;
s7: importing standard near-infrared test spectrogram data which stores liquor classification grades and corresponding liquor grades;
s8: after the detection spectrogram signal and the standard near-infrared test spectrogram data are called, carrying out comparative analysis and classification, and outputting a corresponding grade result of the white spirit to be detected;
s9: and generating a control command for realizing the automatic operation of the test system.
The invention is further configured to: in S3, the specific test result of the test of the sample bottle to be tested with different test waves is:
s31: storing the sample bottle to be detected in a vacancy of a sample vacancy disc to be detected;
s32: placing the sample bottles to be tested stored in the sample vacancy disc to be tested in the lofting holes according to the control command of the control unit;
s33: and after the test is finished, putting the sample on the lofting hole into the corresponding tested sample vacancy.
In conclusion, the invention has the following beneficial effects: the method comprises the steps of obtaining spectrogram data of a white spirit sample by using a near infrared spectrum technology, and rapidly judging the grade of the white spirit by using pattern recognition software, so that the judgment speed and the judgment accuracy of the grade of the white spirit are improved; the spectrogram information in the white spirit sample is tested by using the near infrared spectrum technology, and the test can be carried out without damaging the sample, so that the white spirit sample can be detected in batches; the liquor sample is mechanically operated by the sampling mechanical arm to be tested, so that the working intensity of operators and the requirements on the operation technology of the operators are reduced, the input cost of liquor grade classification is reduced, and basic conditions are provided for the batch classification of the liquor grades.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram showing the operation of embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structure of a sample disk unit in example 1 of the present invention;
fig. 3 is a flowchart in embodiment 2 of the present invention.
In the figure: 1. a light source unit; 2. a prism unit; 3. a sample tray unit; 4. a light splitting unit; 5. a detection unit; 6. a control terminal; 61. a display unit; 62. a data processing unit; 63. A database; 64. a control unit; 7. a sample to be detected is empty disc; 71. a measured sample vacancy disc; 8. placing a sample hole; 9. sampling mechanical arm.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 1 to 3 and embodiments 1 to 2.
Example 1: a white spirit sample testing system based on near infrared spectrum is shown in figure 1 and comprises a light source unit 1, a prism unit 2, a sample tray unit 3, a light splitting unit 4, a detection unit 5 and a control terminal 6. The signal output end of the control terminal 6 is connected with the signal input ends of the prism unit 2, the sample tray unit 3 and the light splitting unit 4, the signal output end of the detection unit 5 is connected with the signal input end of the control terminal 6, and the control terminal 6 comprises a display unit 61, a database 63, a data processing unit 62 and a control unit 64.
The light source unit 1 is for emitting near-infrared radiation of different wavelengths to the prism. The prism unit 2 serves to divide the near infrared radiation into different test bands. The sample disc unit 3 is used for irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected. The light splitting unit 4 is used to remove stray light in the light to be detected, and in this embodiment, the light splitting unit 4 is a light splitter. The detection unit 5 is configured to detect the light intensity of the light to be detected after the stray light is removed, convert the light intensity signal into an electrical signal, and transmit the electrical signal to the display unit 61, in this embodiment, the detection unit 5 is a detector. The display unit 61 is configured to display the electrical signal as a corresponding detection spectrogram signal, and in this embodiment, the display unit 61 is a display screen. The database 63 stores liquor grading and standard near-infrared test spectrogram data corresponding to the liquor grading. The data processing unit 62 is configured to call the detection spectrogram signal and the standard near-infrared test spectrogram data, perform comparative analysis and classification, and output a corresponding grade result of the sample to be detected, in this embodiment, the data processing unit 62 is a processor. The control unit 64 is used for generating a control command for implementing the automatic operation of the test system, and in this embodiment, the control unit 64 is a controller. The control commands include, but are not limited to, a driving command for controlling the rotation mechanism for driving the prism to rotate to open and close, a test command for controlling the sample tray unit 3 to automatically pick and place samples, and a removal command for controlling the optical splitter to remove stray light.
As shown in fig. 1 and 2, the sample tray unit 3 includes a sample empty tray 7 to be tested, a lofting hole 8, a tested sample empty tray 71, and a sampling robot arm 9, and the sampling robot arm 9 is a conventional automated robot arm. In this embodiment, the sample empty tray 7 and the measured sample empty tray 71 are symmetrically disposed, and the sample placing hole 8 and the sampling robot 9 are disposed between the sample empty tray 7 and the measured sample empty tray 71. Wherein, the sample vacancy dish 7 that awaits measuring is used for depositing the sample bottle that awaits measuring. The sample placing hole 8 is used for placing the sample bottle to be tested on the irradiation paths of different test wave bands. The tested sample empty tray 71 is used for storing tested sample bottles. The sampling mechanical arm 9 is used for placing the sample bottle to be tested stored in the sample vacancy disc 7 to be tested in the lofting hole 8 according to the control command of the control unit 64, and placing the sample on the lofting hole 8 into the corresponding tested sample vacancy after the test is finished.
As shown in fig. 2, the number of empty positions of the sample empty position disk 7 to be measured is any one of 6, 9, 20, and 32 empty positions which are distributed in an array. In this embodiment, the number of the 9 vacant sites distributed in a 3 × 3 arrangement is used for each of the vacant site trays 7 and 71 for samples to be measured. The 20 empty bits are arranged and distributed in 4 multiplied by 5, and the 32 empty bits are arranged and distributed in 4 multiplied by 8.
Example 2: a method for testing a white spirit sample based on near infrared spectrum is shown in figures 1 and 3 and comprises the following steps:
s1: a light source is used to emit near infrared radiation of different wavelengths to the prism.
S2: the near infrared radiation is divided into different test bands by a prism.
S3: and irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected.
S4: and removing stray light in the light to be detected.
S5: and detecting the light intensity of the light to be detected after the stray light is removed, converting the light intensity signal into an electric signal, and transmitting the electric signal to the display unit 61.
S6: and displaying the electric signals as corresponding detection spectrogram signals.
S7: and importing standard near-infrared test spectrogram data which stores the white spirit grading and the corresponding white spirit grade.
S8: and calling the detection spectrogram signal and the standard near-infrared test spectrogram data, performing comparative analysis and classification, and outputting a corresponding grade result of the white spirit sample to be detected.
S9: and generating a control command for realizing the automatic operation of the test system.
As shown in fig. 2, in S3, the specific test waves of the sample bottle to be tested include:
s31: and storing the sample bottle to be tested in the vacancy of the sample vacancy disc 7 to be tested.
S32: the sample bottles to be tested stored in the sample empty tray 7 to be tested are placed in the lofting holes 8 according to a control command of the control unit 64.
S33: after the test is finished, the sample on the sample placing hole 8 is placed into the corresponding tested sample vacancy.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. A white spirit sample test system based on near infrared spectrum is characterized in that: the device comprises a light source unit (1), a prism unit (2), a sample disc unit (3), a light splitting unit (4), a detection unit (5) and a control terminal (6); the signal output end of the control terminal (6) is connected with the signal input ends of the prism unit (2), the sample disc unit (3) and the light splitting unit (4), the signal output end of the detection unit (5) is connected with the signal input end of the control terminal (6), and the control terminal (6) comprises a display unit (61), a database (63), a data processing unit (62) and a control unit (64); wherein the content of the first and second substances,
the light source unit (1) is used for emitting near infrared radiation with different wavelengths to the prism;
the prism unit (2) is used for dividing the near infrared radiation into different test wave bands;
the sample disc unit (3) is used for irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected;
the light splitting unit (4) is used for removing stray light in the light to be detected;
the detection unit (5) is used for detecting the light intensity of the light to be detected after stray light is removed, converting a light intensity signal into an electric signal and transmitting the electric signal to the display unit (61);
the display unit (61) is used for displaying the electric signals as corresponding detection spectrogram signals;
the database (63) stores liquor classification grades and standard near-infrared test spectrogram data corresponding to the liquor grades;
the data processing unit (62) is used for calling the detection spectrogram signal and the standard near-infrared test spectrogram data, performing comparative analysis and classification on the detection spectrogram signal and the standard near-infrared test spectrogram data, and outputting a corresponding grade result of the white spirit sample to be detected;
and the control unit (64) is used for generating a control command for realizing the automatic operation of the test system.
2. The near infrared spectrum based white spirit sample testing system according to claim 1, characterized in that: the sample disc unit (3) comprises a sample vacancy disc (7) to be detected, a sample placing hole (8), a measured sample vacancy disc (71) and a sampling mechanical arm (9); wherein the content of the first and second substances,
the to-be-detected sample vacancy disc (7) is used for storing to-be-detected sample bottles;
the sample placing hole (8) is used for placing a sample bottle to be tested on the irradiation paths of the different test wave bands;
the tested sample vacancy disc (71) is used for storing tested sample bottles;
the sampling mechanical arm (9) is used for placing the sample bottle to be tested stored in the sample vacancy disc (7) to be tested in the sample placing hole (8) according to the control command of the control unit (64), and placing the sample on the sample placing hole (8) into the corresponding tested sample vacancy after the test is finished.
3. The near infrared spectrum based white spirit sample testing system according to claim 2, characterized in that: the number of the vacancies of the sample vacancy disc (7) to be detected is any one of 6, 9, 20 and 32 vacancies which are distributed in an arrangement manner.
4. A white spirit sample testing method based on near infrared spectrum is characterized in that: the method comprises the following steps:
s1: emitting near infrared radiation rays with different wavelengths to the prism by using a light source;
s2: dividing the near infrared radiation into different test wave bands through a prism;
s3: irradiating the sample bottle to be detected with different test wave bands to obtain light to be detected;
s4: removing stray light in the light to be detected;
s5: detecting the light intensity of the light to be detected after the stray light is removed, converting the light intensity signal into an electric signal and transmitting the electric signal to a display unit (61);
s6: displaying the electrical signals as corresponding detection spectrogram signals;
s7: importing standard near-infrared test spectrogram data which stores liquor classification grades and corresponding liquor grades;
s8: after the detection spectrogram signal and the standard near-infrared test spectrogram data are called, carrying out comparative analysis and classification, and outputting a corresponding grade result of the white spirit to be detected;
s9: and generating a control command for realizing the automatic operation of the test system.
5. The near infrared spectrum-based white spirit sample testing system and method according to claim 4, wherein the system comprises: in S3, the specific test result of the test of the sample bottle to be tested with different test waves is:
s31: storing the sample bottle to be detected in a vacancy of a sample vacancy disc (7) to be detected;
s32: placing the sample bottles to be detected stored in the sample vacancy disc (7) to be detected in the lofting hole (8) according to the control command of the control unit (64);
s33: after the test is finished, the sample on the sample placing hole (8) is placed into the corresponding tested sample vacant position.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112285053A (en) * | 2020-10-28 | 2021-01-29 | 四川轻化工大学 | Near infrared spectrum-based white spirit distiller's yeast sample testing device and method |
| CN114414478A (en) * | 2021-12-21 | 2022-04-29 | 北京智创芯源科技有限公司 | Sample testing device and testing method for cadmium zinc telluride sample |
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2020
- 2020-05-26 CN CN202010453235.1A patent/CN111766216A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285053A (en) * | 2020-10-28 | 2021-01-29 | 四川轻化工大学 | Near infrared spectrum-based white spirit distiller's yeast sample testing device and method |
| CN114414478A (en) * | 2021-12-21 | 2022-04-29 | 北京智创芯源科技有限公司 | Sample testing device and testing method for cadmium zinc telluride sample |
| CN114414478B (en) * | 2021-12-21 | 2022-09-02 | 北京智创芯源科技有限公司 | Sample testing device and testing method for cadmium zinc telluride sample |
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