CN105334165A - Tony red detection device and method based on ultraviolet curing - Google Patents
Tony red detection device and method based on ultraviolet curing Download PDFInfo
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- CN105334165A CN105334165A CN201510895771.6A CN201510895771A CN105334165A CN 105334165 A CN105334165 A CN 105334165A CN 201510895771 A CN201510895771 A CN 201510895771A CN 105334165 A CN105334165 A CN 105334165A
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- tonyred
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- FHNINJWBTRXEBC-UHFFFAOYSA-N Sudan III Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC(C=C1)=CC=C1N=NC1=CC=CC=C1 FHNINJWBTRXEBC-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 21
- 235000013305 food Nutrition 0.000 claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 30
- 238000003384 imaging method Methods 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 15
- 238000005286 illumination Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 3
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- 240000004160 Capsicum annuum Species 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 235000001808 Ceanothus spinosus Nutrition 0.000 description 1
- 241001264786 Ceanothus spinosus Species 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 240000001417 Vigna umbellata Species 0.000 description 1
- 235000011453 Vigna umbellata Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000002864 food coloring agent Nutrition 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001945 resonance Rayleigh scattering spectroscopy Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
The invention relates to a tony red detection device and method based on ultraviolet curing. An illuminating light path of the device comprises an area-array LED array at the ultraviolet band, an imaging lens, a beam splitter prism, a first diaphragm and an objective lens. An imaging light path comprises a mixture of food to be detected and UV glue, an objective lens, a first diaphragm, a beam splitter prism, a tube mirror, a second diaphragm, a scanning lens, a two-dimensional scanning galvanometer, a focusing lens, a pinhole and a detector. The method includes the steps that the mixture of food to be detected and UV glue is obtained first; then all LEDs in the area-array LED array are lightened in sequence, a plurality of images are obtained, and accordingly C is calculated; at last, the conclusion about whether tony red is contained or not is drawn. It is discovered that after the tony red is combined with the UV glue, an optically-anisotropic crystal structure can be generated, and the crystal can have an obviously-different light reflecting character under the radiation of ultraviolet light at different angles. On this basis, the tony red detection device and method based on ultraviolet curing are disclosed, the structure of the device is simple, the detection process is easy, and the process can even be operated by common people.
Description
Technical field
The invention belongs to technical field of food detection, be specifically related to a kind of tonyred pick-up unit based on ultra-violet curing and method.
Background technology
Tonyred is a kind of chemical staining agent, is mainly used in the dyeing of the products such as greasepaint, machine oil, wax and shoe polish.Tonyred is added in food by some illegal retailers, such as chilli powder, chilli oil, red bean corruption, and red heart birds, beasts and eggs etc., make food colour bright-coloured, and then increase sales volume.But tonyred is not food additives, containing a kind of compound being naphthalene in the chemical analysis of tonyred, this material has azo structure, and the character of this chemical constitution determines it and has carcinogenicity, has obvious toxic action to the liver kidney organ of human body.
Visible, in order to prevent tonyred to the injury of human body, needing to detect and the tonyred in food is detected.
Traditional tonyred detection method comprises high performance liquid chromatography, thin-layered chromatography, combined gas chromatography mass spectrometry, spectrophotometric method, Raman spectroscopy, resonance rayleigh light scattering method etc.These methods or apparatus structure complexity, or testing process is loaded down with trivial details, or professional very strong.
Summary of the invention
After present invention finds tonyred and the cementing conjunction of UV, a kind of anisotropic crystal structure can be produced, under different angles UV-irradiation, this crystal can have visibly different light-reflecting property, based on above-mentioned characteristic, the invention discloses a kind of tonyred pick-up unit based on ultra-violet curing and method, there is apparatus structure simple, or testing process is simple, ordinary people can carry out the technical advantage operated.
The object of the present invention is achieved like this:
Based on the tonyred pick-up unit of ultra-violet curing, comprise illumination path and imaging optical path;
Described illumination path comprises: the face matrix LED array of ultraviolet band, imaging len, Amici prism, the first diaphragm and object lens; The light beam sent from face matrix LED array is successively after imaging len, Amici prism, object lens, and parallel radiation is to food to be measured and UV glue mixture surface;
Described imaging optical path comprises: food to be measured and UV glue mixture, object lens, the first diaphragm, Amici prism, Guan Jing, the second diaphragm, scanning lens, two-dimensional scanning mirrors, condenser lens, pin hole and detector; The light beam of food to be measured and UV glue mixture surface reflection, successively through object lens, the first diaphragm, Amici prism, Guan Jing, the second diaphragm, scanning lens, two-dimensional scanning mirrors, condenser lens, is imaged onto pin hole position, and by detector image-forming; Described two-dimensional scanning mirrors, in its place plane or plane in parallel, with orthogonal both direction for rotating shaft, carries out two-dimensional rotary;
Described illumination path and imaging optical path share Amici prism, the first diaphragm and object lens;
Described face matrix LED array is positioned at the object plane of imaging len, and the back focal plane as plane and object lens of imaging len coincides with the first diaphragm place plane; The front focal plane of Guan Jing and the back focal plane of scanning lens coincide with the second diaphragm place plane; Pin hole is positioned at the front focal plane of condenser lens, is close to detector.
In the above-mentioned tonyred detection method based on ultra-violet curing based on the tonyred pick-up unit of ultra-violet curing realizes, comprise the following steps:
Step a, food to be measured to be mixed with UV glue under 45-65 degree Celsius, obtain food to be measured and UV glue mixture;
Step b, food to be measured and UV glue mixture are placed in object lens front focal plane;
Step c, light each LED in the matrix LED array of face successively, corresponding adjustment two-dimensional scanning mirrors angle, makes food to be measured and UV glue mixture surface information all be detected device and receives, obtain the image identical with LED quantity;
The gray-scale value of coordinate same pixel in steps d, extraction step c gained image, and according to following formulae discovery C:
C＝(Imax-Imin)/(Imax+Imin)
In formula, Imax is the maximal value in gray-scale value, and Imin is the minimum value in gray-scale value;
If step e C is greater than the number of threshold value more than 50%, then illustrate in food to be measured containing tonyred.
Beneficial effect: after present invention finds tonyred and the cementing conjunction of UV, a kind of optically anisotropic crystal structure can be produced, under different angles UV-irradiation, this crystal can have visibly different light-reflecting property, based on above-mentioned characteristic, the invention discloses a kind of tonyred pick-up unit based on ultra-violet curing and method, there is apparatus structure simple, or testing process is simple, ordinary people can carry out the technical advantage operated.
Accompanying drawing explanation
Fig. 1 is the tonyred structure of the detecting device schematic diagram that the present invention is based on ultra-violet curing.
Fig. 2 is the tonyred pick-up unit illumination path figure that the present invention is based on ultra-violet curing.
Fig. 3 is the tonyred pick-up unit imaging optical path figure that the present invention is based on ultra-violet curing.
In figure: 1 matrix LED array, 2 imaging lens, 3 Amici prisms, 4 first diaphragms, 5 object lens, 6 food to be measured and UV glue mixture, 7 pipe mirrors, 8 second diaphragms, 9 scanning lenses, 10 two-dimensional scanning mirrors, 11 condenser lenses, 12 pin holes, 13 detectors.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
Specific embodiment one
The present embodiment is the tonyred pick-up unit embodiment based on ultra-violet curing.
The tonyred pick-up unit based on ultra-violet curing of the present embodiment, structural representation as shown in Figure 1.This device comprises illumination path and imaging optical path;
As shown in Figure 2, it comprises described illumination path: the face matrix LED array 1 of ultraviolet band, imaging len 2, Amici prism 3, first diaphragm 4 and object lens 5; The light beam sent from face matrix LED array 1 is successively after imaging len 2, Amici prism 3, object lens 5, and parallel radiation is to food to be measured and UV glue mixture 6 surface;
As shown in Figure 3, it comprises described imaging optical path: food to be measured and UV glue mixture 6, object lens 5, first diaphragm 4, Amici prism 3, pipe mirror 7, second diaphragm 8, scanning lens 9, two-dimensional scanning mirrors 10, condenser lens 11, pin hole 12 and detector 13; The light beam of food to be measured and UV glue mixture 6 surface reflection is successively through object lens 5, first diaphragm 4, Amici prism 3, pipe mirror 7, second diaphragm 8, scanning lens 9, two-dimensional scanning mirrors 10, condenser lens 11, be imaged onto pin hole 12 position, and by detector 13 imaging; Described two-dimensional scanning mirrors 10, in its place plane or plane in parallel, with orthogonal both direction for rotating shaft, carries out two-dimensional rotary;
Described illumination path and imaging optical path share Amici prism 3, first diaphragm 4 and object lens 5;
Described face matrix LED array 1 is positioned at the object plane of imaging len 2, and the back focal plane as plane and object lens 5 of imaging len 2 coincides with the first diaphragm 4 place plane; The front focal plane of pipe mirror 7 and the back focal plane of scanning lens 9 coincide with the second diaphragm 8 place plane; Pin hole 12 is positioned at the front focal plane of condenser lens 11, is close to detector 13.
Specific embodiment two
The present embodiment is the tonyred detection method embodiment based on ultra-violet curing.
The tonyred detection method based on ultra-violet curing of the present embodiment, realizing based on the tonyred pick-up unit of ultra-violet curing at specific embodiment one, the method comprises the following steps:
Step a, food to be measured to be mixed with UV glue under 45-65 degree Celsius, obtain food to be measured and UV glue mixture 6;
Step b, food to be measured and UV glue mixture 6 are placed in object lens 5 front focal plane;
Step c, light each LED in face matrix LED array 1 successively, corresponding adjustment two-dimensional scanning mirrors 10 angle, makes food to be measured and UV glue mixture 6 surface information all be detected device 13 and receives, obtain the image identical with LED quantity;
The gray-scale value of coordinate same pixel in steps d, extraction step c gained image, and according to following formulae discovery C:
C＝(Imax-Imin)/(Imax+Imin)
In formula, Imax is the maximal value in gray-scale value, and Imin is the minimum value in gray-scale value;
If step e C is greater than the number of threshold value more than 50%, then illustrate in food to be measured containing tonyred.
In the method, if the LED in face matrix LED array 1 equidistantly arranges, light angle even variation can be realized; If the LED unequal-interval arrangement in face matrix LED array 1, can realize at optimal illumination approximate angle accurate adjustment.
In the method, threshold value can be chosen according to actual conditions, and those skilled in the art can obtain optimal values by limited number of time experiment, no longer describe in detail in the present embodiment.
In addition, the present invention has also carried out following experiment:
Test one, when food to be measured does not mix with UV glue, repeat whole embodiment of the method, the result obtained shows, no matter in food to be measured whether containing tonyred, result is all as broad as long, and this result shows that UV glue has the decisive role that whether can detect tonyred in the present invention.
Test two, the food to be measured containing tonyred is mixed with UV glue under 0-99 degree Celsius, with 1 degree Celsius for step-length, at each temperature, repeat whole embodiment of the method, the result obtained shows, only in 45-65 degree Celsius range, tonyred can be detected according to the inventive method; Show by analysis, only in 45-65 degree Celsius range, after food to be measured mixes with UV glue, a kind of optically anisotropic crystal structure could be produced, and then realize the detection to tonyred.
Test three, use other wave band light source outside ultraviolet light, comprise visible light source, infrared band light source, determinand containing tonyred and UV glue mixture are irradiated, find not detect tonyred, this result shows that ultraviolet band is the crystal that can effectively utilize tonyred and the cementing conjunction of UV to produce afterwards, and then detects the key technical feature of tonyred.
Claims (2)
1. based on the tonyred pick-up unit of ultra-violet curing, it is characterized in that, comprise illumination path and imaging optical path;
Described illumination path comprises: face matrix LED array (1) of ultraviolet band, imaging len (2), Amici prism (3), the first diaphragm (4) and object lens (5); The light beam sent from face matrix LED array (1) is successively after imaging len (2), Amici prism (3), object lens (5), and parallel radiation is to food to be measured and UV glue mixture (6) surface;
Described imaging optical path comprises: food to be measured and UV glue mixture (6), object lens (5), the first diaphragm (4), Amici prism (3), Guan Jing (7), the second diaphragm (8), scanning lens (9), two-dimensional scanning mirrors (10), condenser lens (11), pin hole (12) and detector (13); The light beam of food to be measured and UV glue mixture (6) surface reflection is successively through object lens (5), the first diaphragm (4), Amici prism (3), Guan Jing (7), the second diaphragm (8), scanning lens (9), two-dimensional scanning mirrors (10), condenser lens (11), be imaged onto pin hole (12) position, and by detector (13) imaging; Described two-dimensional scanning mirrors (10), in its place plane or plane in parallel, with orthogonal both direction for rotating shaft, carries out two-dimensional rotary;
Described illumination path and imaging optical path share Amici prism (3), the first diaphragm (4) and object lens (5);
Described face matrix LED array (1) is positioned at the object plane of imaging len (2), and the picture plane of imaging len (2) and the back focal plane of object lens (5) coincide with the first diaphragm (4) place plane; The front focal plane of Guan Jing (7) and the back focal plane of scanning lens (9) coincide with the second diaphragm (8) place plane; Pin hole (12) is positioned at the front focal plane of condenser lens (11), is close to detector (13).
2. described in claim 1 based on the sodium formaldehyde sulfoxylate detection method based on ultra-violet curing that the tonyred pick-up unit of ultra-violet curing realizes, it is characterized in that, comprise the following steps:
Step a, food to be measured to be mixed with UV glue under 45-65 degree Celsius, obtain food to be measured and UV glue mixture (6);
Step b, food to be measured and UV glue mixture (6) are placed in object lens (5) front focal plane;
Step c, light each LED in face matrix LED array (1) successively, corresponding adjustment two-dimensional scanning mirrors (10) angle, make food to be measured and UV glue mixture (6) surface information all be detected device (13) to receive, obtain the image identical with LED quantity;
The gray-scale value of coordinate same pixel in steps d, extraction step c gained image, and according to following formulae discovery C:
C＝(Imax-Imin)/(Imax+Imin)
In formula, Imax is the maximal value in gray-scale value, and Imin is the minimum value in gray-scale value;
If step e C is greater than the number of threshold value more than 50%, then illustrate in food to be measured containing tonyred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895771.6A CN105334165B (en) | 2015-12-08 | 2015-12-08 | Tonyred detection means and method based on ultra-violet curing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895771.6A CN105334165B (en) | 2015-12-08 | 2015-12-08 | Tonyred detection means and method based on ultra-violet curing |
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| CN105334165A true CN105334165A (en) | 2016-02-17 |
| CN105334165B CN105334165B (en) | 2018-01-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004317153A (en) * | 2003-04-11 | 2004-11-11 | Nireco Corp | Method and apparatus for inspecting gloss of vegetables and fruits |
| CN1975390A (en) * | 2006-12-13 | 2007-06-06 | 西南大学 | Method for detecting sudan red in foods |
| CN201876518U (en) * | 2010-10-15 | 2011-06-22 | 安徽景全光电科技有限公司 | Modular ultraviolet imager |
| JP2012013444A (en) * | 2010-06-29 | 2012-01-19 | Kmew Co Ltd | Appearance inspection device and appearance inspection method |
| CN203117102U (en) * | 2013-02-01 | 2013-08-07 | 江汉大学 | Ultraviolet detection device |
-
2015
- 2015-12-08 CN CN201510895771.6A patent/CN105334165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004317153A (en) * | 2003-04-11 | 2004-11-11 | Nireco Corp | Method and apparatus for inspecting gloss of vegetables and fruits |
| CN1975390A (en) * | 2006-12-13 | 2007-06-06 | 西南大学 | Method for detecting sudan red in foods |
| JP2012013444A (en) * | 2010-06-29 | 2012-01-19 | Kmew Co Ltd | Appearance inspection device and appearance inspection method |
| CN201876518U (en) * | 2010-10-15 | 2011-06-22 | 安徽景全光电科技有限公司 | Modular ultraviolet imager |
| CN203117102U (en) * | 2013-02-01 | 2013-08-07 | 江汉大学 | Ultraviolet detection device |
Non-Patent Citations (2)
| Title |
|---|
| 张金平等: "苏丹红系列染料在有机溶液中的紫外-可见光谱研究", 《光谱学与光谱分析》 * |
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| CN105334165B (en) | 2018-01-23 |
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Effective date of registration: 20171121 Address after: Bamboo hi tech Industrial Development Zone, Henan province Zhengzhou City 450000 Street No. 6 Building 4, 1 layers of No. 05 Applicant after: ZHENGZHOU LIFUAI BIOLOGY TECHNOLOGY Co.,Ltd. Address before: 150000 Heilongjiang high tech Industrial Development Zone, Nangang hi tech Venture Center, building No. 17, Hongqi Street, room No. 801, room 162 Applicant before: HARBIN HUANSHI TECHNOLOGY DEVELOPMENT CO.,LTD. |
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Denomination of invention: Detection device and method of Sudan red based on UV curing Effective date of registration: 20201209 Granted publication date: 20180123 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: GUANGZHOU HENGCHUANG TESTING TECHNOLOGY SERVICE Co.,Ltd. Registration number: Y2020980009025 |
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Date of cancellation: 20230526 Granted publication date: 20180123 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: GUANGZHOU HENGCHUANG TESTING TECHNOLOGY SERVICE CO.,LTD. Registration number: Y2020980009025 |