CN203259464U - Edible oil merits judgment system based on light polarization state - Google Patents
Edible oil merits judgment system based on light polarization state Download PDFInfo
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- CN203259464U CN203259464U CN 201320233235 CN201320233235U CN203259464U CN 203259464 U CN203259464 U CN 203259464U CN 201320233235 CN201320233235 CN 201320233235 CN 201320233235 U CN201320233235 U CN 201320233235U CN 203259464 U CN203259464 U CN 203259464U
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Abstract
The utility model discloses an edible oil merits judgment system based on a light polarization state. The edible oil merits judgment system comprises a laser, a beam expanding mirror, a collimating mirror, a polarizer, a glass container, an angular displacement sensor, an analyzer, a photoelectric inductor and a treatment device, wherein lasers emitted from the laser pass through the beam expanding mirror; formed diverging light passes through the collimating mirror to become collimated light beams and then passes through the polarizer to form linearly polarized light with a certain angle with an incident light axis; the linearly polarized light passes through the glass container filled with edible oil to be judged, the light emitted at the time is changed in polarization direction, and the emitted polarized light passes through the analyzer with a rotating angle controlled by the angular displacement sensor; the polarized light which passes through the analyzer shines on the photoelectric inductor; data is treated through the treatment device so that an judgment result is obtained. The edible oil merits judgment system disclosed by the utility model has the advantages of easiness for calculation, high precision degree, low cost, and the like.
Description
Technical field
The utility model belongs to the detection field of edible oil, is specifically related to a kind of judgement system of the edible oil quality based on polarization state.
Background technology
Judge that based on the polarisation of light attitude method of edible oil quality is to arise under for the background of differentiating more quickly and accurately the edible oil quality.In the face of certain factory production and situation of selling swill oil (waste oil a kind of) under the ordering about of interests, China has put into effect relevant regulation for a long time, forbids this waste grease is processed into edible oil.The waste oil phenomenon that is processed into edible oil is exposed by the media again and again in recent years, and relevant departments have also strengthened the dynamics of hitting to this, but since lucrative, add that the detection technique difficult problem of waste oil can't solve always, and waste oil remains incessant after repeated prohibition all the time.
The a lot of indexs of poor oil are the grave fault edible oil hygienic standard of closing national regulation all, and very harmful, it directly enters the water source can cause water pollution, and in case after being eaten by human body, then may cause food poisoning.Its head and shoulders above national regulation scope of index of becoming sour, the long-term absorption, people lose weight and maldevelopment occurring, and easily suffer from diarrhoea and enteritis, and liver, the heart and the pathologies such as kidney enlargement and fatty liver are arranged.In addition, the aspergillus flavus toxicity of the contaminated generation of waste oil not only easily makes the people that liver cancer occurs, also can Cancer at other positions.
The method of traditional bad change of detection edible oil is not only time-consuming but also require great effort, and the use meeting of a large amount of chemical reagent produces potential harm to physical environment.
The physics and chemistry detection method mainly detects neopelex, and it is a kind of anionic surfactant, is widely used in the washing agent.The part waste oil is the oil of swill through simply processing, extracting, find after deliberation to contain in this part waste oil the principal ingredient neopelex in the washing agent, just can by detecting in the oils whether contain neopelex so detect this part waste oil.But adopt this method can only detect the waste oil of having admixed swill oil, can not detect frying oil and discarded animal fat.
Thin layer chromatography is used for the quantitative test of cholesterol, but can only measures purer waste oil, if the waste oil of edible oil blending can't detect when being lower than 10%.
Conductivity method, be used for the detection of heavy metal, waste oil complicated component by the swill oil refinement, it and underground cement wall (contain various trace elements, such as Pb, Cd, As, Cr, Hg, Zn, Co, Ni, Tl, Be, Sn, Cu, Sb, Mo and V etc.), underground sanitary sewage, metallic conduit, waste and old metal bucket etc. contact, the metallic ion severe overweight is introduced multiple nonmetalloid simultaneously.So the amount of metallic element that can be by detecting the oils product determines whether to be waste oil.The conductivity of electrolyte and waste oil (extraction phase) is 3～7 times of edible oil, develops the detection method that a kind of 0.5h differentiates waste oil, but because of accuracy limitations, fails to be promoted.
Nuclear magnetic resonance spectrometry, because containing a large amount of animal fats in the waste oil, at a certain temperature, the solid fats content of waste oil (SFC value) is when producing nuclear magnetic resonance than qualified food plant innage nuclear magnetic resonance differential method, the rapid relative motion of liquid molecule, to cause significantly motion and make spectral line narrowing, resonance peak raises; Otherwise, the resonance peak of solid-state molecular is then low and flat, after after a while, test will obtain 2 groups of nuclear magnetic resoance spectrums (NMR) signal value, and signal strength values calculates the solid fats content value thus, nuclear magnetic resonance is not affected by operating personnel's technical merit, measuring accuracy is high, and is relatively quick, can be used for the detection of waste oil, but the instrument of nuclear magnetic resonance is expensive, is difficult for promoting.
Infrared Detection Method, oxidation, the reaction of becoming sour of height can occur in the grease in swill oil or the deep-fried oil in process, generation is than the more oxidation product of common vegetable fat, because oxidation product different characteristic peaks can occur near infrared spectrum, thereby, can pass through these characteristic peaks, judge whether contain swill oil or deep-fried oil in the edible oil and fat.Advantage is that sample does not need through pre-service, non-destructive analysis, real-time analysis, harmonic analysis cost and simple to operate etc.Shortcoming is calculation of complex, and precision is not high, instrument price etc.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of calculate simple, precision is high and cost is low based on the judgement system of the edible oil quality of polarization state.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of judgement system of the edible oil quality based on polarization state, and it comprises laser instrument, beam expanding lens, collimating mirror, the polarizer, glass container, angular displacement sensor, analyzer, photoelectric sensor and treating apparatus;
Laser instrument sends laser, pass through beam expanding lens, the diverging light that forms becomes collimated light beam through collimating mirror, form the linearly polarized light angled with incident light axis through the polarizer afterwards, linearly polarized light is by being equipped with the glass container of edible oil to be judged, the light polarization direction that penetrate this moment changes, and penetrates polarized light through the analyzer by the angular displacement sensor control anglec of rotation, beat on photoelectric sensor through the polarized light of analyzer, data communication device is crossed the treating apparatus processing and is drawn judged result.
It is the He-Ne laser instrument of 632.8nm that described laser instrument adopts wavelength.Described angular displacement sensor is the resistance-type angular displacement sensor.Described glass container is the rectangular parallelepiped glass container.Described laser instrument is first by entering beam expanding lens again after the total reflection of full transmitting mirror.Described treating apparatus comprises PC end and display, obtains data communication device by photoelectric sensor and crosses data line and be sent to the PC end and process, and the result shows by display.
Compared with prior art, the beneficial effects of the utility model are:
The utility model accuracy is high, reliability is strong, it carries out Non-Destructive Testing not changing under the chemical property condition of sample, thereby by the specific rotation of sample to the change inverting sample of polarized light, the polarization state of calculating the outgoing polarized light changes, measured a series of data and standard database compare, and can accurately judge the quality of edible oil, and degree of accuracy is high.The at present domestic detection that applies to the edible oil quality based on this technology there is no.
Description of drawings
Fig. 1 is that the utility model is based on the judgement system of systems composition synoptic diagram of the edible oil quality of polarization state;
Fig. 2 light intensity curve variation diagram that to be the utility model record based on the determination methods of the edible oil quality of polarization state.
Embodiment
Below in conjunction with specific embodiment the utility model is further described.
Fig. 1 is the composition synoptic diagram of the judgement system of a kind of edible oil quality based on polarization state of the utility model, comprise: He-Ne laser instrument 1 sends the laser 2 of 632.8nm, by passing through beam expanding lens 4 after the full transmitting mirror 3, the diverging light 5 that forms is through 6 one-tenth collimated light beams of collimating mirror 7, be formed at the angled linearly polarized light of X-axis 9 through a polarizer 8 afterwards, linearly polarized light is equipped with edible oil to be judged and the certain rectangular parallelepiped glass container 10 of length by one, light 11 polarization directions that penetrate this moment change, penetrate polarized light through the analyzer 12 by the angular displacement sensor 14 control anglecs of rotation, through 13 dozens of the polarized lights of analyzer on photoelectric sensor 15, data communication device is crossed data line and is sent to 16 processing of PC end, and the result shows by display.
Fig. 2 is the light intensity curve variation diagram that the determination methods of a kind of edible oil quality based on polarization state of the utility model records.
Edible oil to be measured and the sample (hereinafter to be referred as sample) of specifying edible oil to be configured to finite concentration C are injected the long container of L that is, leave standstill liquid a period of time, treat that bubble all overflows, behind the liquid stabilising, open laser instrument, the pilot angle displacement transducer, stably control the rotation of analyzer, photoelectric sensor detects the light intensity of the polarized light after the polarization state that penetrates changes from sample simultaneously, by MATLAB the continually varying light intensity being depicted as curve shows, and with do not add the light intensity curve of sample oil time after by vacant polarization tube and be presented in the same coordinate axis, accordingly can be according to a segment distance of the whole translation of curve, the difference of measuring the position, angle between the two curve arbitrary neighborhood minimum value (light intensity is the most weak) is the angle Φ that the vibration plane of polarized light rotates after the sample edible oil, read again the light intensity of four different angles linear polarization components, be designated as respectively I
0, I
+ 45, I
-45, I
90By formula, can calculate the specific rotation of sample, the polarization state parameter, degree of polarization and polarization angle thereof compare the data of the standard edible oil stored in the numerical value that calculates and the database, just can judge the quality of edible oil.
The calculating of specific rotation:
Φ: optical activity rad, α: specific rotation radml/gmm, C: sample concentration g/ml, L: container length mm;
The calculating of polarization state parameter and degree of polarization:
Stokes according to polarized light describes formula,
Get polarization parameter: I=I
0+ I
90, Q=I
90-I
0, U=I
+ 45-I
-45
Degree of polarization P=(Q
2+ U
2)
1/2/ I, polarization angle θ=1/2[tan
-1(U/Q)].
Claims (6)
1. the judgement system based on the edible oil quality of polarization state is characterized in that, comprises laser instrument, beam expanding lens, collimating mirror, the polarizer, glass container, angular displacement sensor, analyzer, photoelectric sensor and treating apparatus;
Laser instrument sends laser, pass through beam expanding lens, the diverging light that forms becomes collimated light beam through collimating mirror, form the linearly polarized light angled with incident light axis through the polarizer afterwards, linearly polarized light is by being equipped with the glass container of edible oil to be judged, the light polarization direction that penetrate this moment changes, and penetrates polarized light through the analyzer by the angular displacement sensor control anglec of rotation, beat on photoelectric sensor through the polarized light of analyzer, data communication device is crossed treating apparatus and is processed.
2. the judgement system of the edible oil quality based on polarization state according to claim 1 is characterized in that, it is the He-Ne laser instrument of 632.8nm that described laser instrument adopts wavelength.
3. the judgement system of the edible oil quality based on polarization state according to claim 1 is characterized in that described angular displacement sensor is the resistance-type angular displacement sensor.
4. the judgement system of the edible oil quality based on polarization state according to claim 1 is characterized in that described laser instrument is first by entering beam expanding lens again after the total reflection of full transmitting mirror.
5. the judgement system of the edible oil quality based on polarization state according to claim 1 is characterized in that, described treating apparatus comprises PC end and display, obtains data communication device by photoelectric sensor and crosses data line and be sent to the PC end and process.
6. the judgement system of the edible oil quality based on polarization state according to claim 1 is characterized in that described glass container is the rectangular parallelepiped glass container.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320233235 CN203259464U (en) | 2013-05-02 | 2013-05-02 | Edible oil merits judgment system based on light polarization state |
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| CN 201320233235 CN203259464U (en) | 2013-05-02 | 2013-05-02 | Edible oil merits judgment system based on light polarization state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454224A (en) * | 2013-05-02 | 2013-12-18 | 广东工业大学 | Edible oil quality determination system and method based on light polarization state |
| CN104181494A (en) * | 2013-05-22 | 2014-12-03 | 国家电网公司 | Electric-energy-meter measurer |
-
2013
- 2013-05-02 CN CN 201320233235 patent/CN203259464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454224A (en) * | 2013-05-02 | 2013-12-18 | 广东工业大学 | Edible oil quality determination system and method based on light polarization state |
| CN103454224B (en) * | 2013-05-02 | 2016-06-22 | 广东工业大学 | Determination methods based on the good and bad judgement system of the edible oil of polarization state |
| CN104181494A (en) * | 2013-05-22 | 2014-12-03 | 国家电网公司 | Electric-energy-meter measurer |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20160502 |
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| CF01 | Termination of patent right due to non-payment of annual fee |