CN107917891A - A kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in - Google Patents

A kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in Download PDF

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Publication number
CN107917891A
CN107917891A CN201711371162.6A CN201711371162A CN107917891A CN 107917891 A CN107917891 A CN 107917891A CN 201711371162 A CN201711371162 A CN 201711371162A CN 107917891 A CN107917891 A CN 107917891A
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China
Prior art keywords
particulate matter
solid particulate
optical fiber
popped
light source
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Withdrawn
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CN201711371162.6A
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Chinese (zh)
Inventor
王动民
丁海泉
高洪智
于新洋
苏建全
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Guangdong Spectrastar Instruments Co Ltd
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Guangdong Spectrastar Instruments Co Ltd
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Priority to CN201711371162.6A priority Critical patent/CN107917891A/en
Publication of CN107917891A publication Critical patent/CN107917891A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3563Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/85Investigating moving fluids or granular solids
    • G01N21/8507Probe photometers, i.e. with optical measuring part dipped into fluid sample
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106General arrangement of respective parts
    • G01N2021/0112Apparatus in one mechanical, optical or electronic block

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention discloses a kind of optical fiber diffusing transmission formula probe for solid particulate matter spectrum Non-Destructive Testing, including shell, exit window, entrance window, emergent ray issue device, incident optical beam, the first speculum, wherein exit window, entrance window are installed on the same side of shell and towards same directions, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, emergent light enters by the diffuse transmission light that solid particulate matter is formed through entrance window obtains incident ray, and incident ray enters incident optical beam through the first speculum change direction and exports.The existing transmission of present invention contrast, diffusing reflection detection mode, this diffusing transmission formula probe eliminate sample cell, it is not necessary to and sample, fill the operating process such as sample, more convenient to use, detection efficiency higher.

Description

A kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in
Technical field
It is more particularly to a kind of for solid particulate matter spectrum Non-Destructive Testing the present invention relates to near-infrared spectrum analysis field Optical fiber diffusing transmission formula is popped one's head in.
Background technology
Certain several compositional information of the solid particulate matters such as grain, oil crop seeds, feed granules are used for quickly detecting It is significant.For example the content information of the crops partial elementses such as grain is obtained in the harvest of grain, purchase, accumulating, processing Significant, for example buyer agent can fix the price according to the quality according to Protein Content in Wheat information, Flour production business can be with the stage Adjusted and produced according to the protein content information of wheat.
Near-infrared spectral analysis technology is detected material composition using near infrared light, using this technology to grain etc. Solid particulate matter is detected and reagent is not required, does not damage that sample, speed are fast, and precision is also higher.This technology from last century 60, Start the seventies to be widely applied in developed countries such as the U.S., many grain processing plants, feed-processing plant, pharmaceutical factory etc. have near red External spectrum analyzer, the recent decades country also begin to use this technology.Many countries, such as U.S., Canada, China will The method of some near infrared detection grain components is set to standard method (such as AACC Method 39-25).
At present transmission method is mainly used using the similar solid particulate matter of NIR technology detection grain and size With diffusing reflection method.During using transmission method, detector must be directed towards light source placement, be generally used for desk-top instrument (US patent 5241178th, FOSS, Infratec TM 1241).To lack (e.g., optically focused science and technology using the instrument of diffusing reflection method SupNIR-2700).Using diffusing reflection method, the grain shape of solid particulate matter can bring larger interference to diffusing, it is necessary to Sample is placed in rotating sample pool, rotates sample, repeatedly measurement obtains the average value of reflected light.Using transmission method and overflow anti- The Grain Analysis instrument of shooting method, either desk-top or portable instrument, is required for sample being placed in sample cell, it is necessary to take The operating process such as sample, dress sample.Many detection demands of grain belong to field assay, such as transaction scene, warehouse, cumbersome operation It is more suitable for laboratory rather than field assay application.Many field assays of near-infrared spectrum analysis apply as fruit harvest when into Ripe degree detection, the storehouse management of industrial chemicals, have begun to largely use hand-held near-infrared spectrometers, such as Felix The F-750 of Instruments Inc., the country also have it is this kind of probe or instrument patent (CN101799401A, CN103822900A, CN104034674A), these equipment need not fill sample operation, fruit or solid powder can be carried out straight Detection is connect, but these equipment can not be used to detect the solid particulate matters such as grain, and sample operation, energy need not be filled at present by still lacking Enough spectroanalysis instruments being directly detected to grain, particularly handheld instrument.Near-infrared spectrum analysis is solved to be difficult to use In the grain field assay the problem of, it is necessary to find new detection mode, substitute existing dress sample detection mode.
In near infrared detection, light needs to be absorbed through sample, part light, and sample is calculated according to the absorption spectrum detected The compositional information of product.The big solid particulate matter sample such as grain oil crop seeds has certain fluidity, can design special spy Head, is inserted into sample, passes light through fraction solids aerosol sample and be detected, and need not so fill sample operation, greatly increase The convenience of field assay application.Near-infrared analysis field has a variety of transmission-types for liquid detecting to pop one's head at present, such as US The design of patent 5418615.But grain is larger, it is necessary to larger light path makes transmitted light more uniform, current transmission Formula probe light path is too small, is not appropriate for the detection for solid particulate matters such as grains.
The content of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency, there is provided one kind is used for solid particle object light The optical fiber diffusing transmission formula probe of Non-Destructive Testing is composed, the solid particulate matters such as grain, oil crop seeds, feed granules are carried out lossless The diffusing transmission formula fibre-optical probe of detection.Belong to the annex of near-infrared spectrometers, be adapted to portable and desk-top near-infrared analysis Instrument uses.
The purpose of the present invention is realized by following technical solution:
A kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in, including shell, exit window, incidence Window, emergent ray issue device, incident optical beam, the first speculum, wherein exit window, entrance window are installed on the same side of shell And towards same direction, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, emergent light warp The diffuse transmission light for crossing solid particulate matter formation obtains incident ray through entrance window entrance, and incident ray changes through the first speculum Direction enters the export of incident optical beam.Incident optical beam, which conducts incident ray to detection device, carries out spectra collection and composition Analysis, the detection device device such as including near-infrared spectrometers.
The emergent ray issue device includes the first light source, the output optical fiber beam, wherein the second speculum, the output optical fiber beam The light of first light source is conducted to the second speculum, solid particle is entered back through exit window through the second speculum change side In thing.
Second speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
The entity right-angle prism that the long side is coated with reflectance coating is separately set with exit window, or merges into one with exit window A solid prism.
The spectrum of first light source is 600~1100nm, first light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
The emergent ray issue device includes secondary light source, and secondary light source is placed in shell and faces exit window, the The light that two light sources are sent is directly over exit window and enters in solid particulate matter.
The spectrum of the secondary light source is 600~1100nm, the secondary light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
First speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
The entity right-angle prism that the long side is coated with reflectance coating is separately set with entrance window, or merges into one with entrance window A solid prism.
The bottom of the shell is thin cylindric.Fibre-optical probe is so facilitated to be inserted into solid particulate matter.
Spacing between the exit window and entrance window is 2cm~4cm.
Compared with prior art, the present invention having the following advantages that and beneficial effect:
The fibre-optical probe of the present invention is mainly used for the short wavelength-NIR region of 600~1100nm, for grain, oil crops The solid particulate matters such as seed, the light transmission rate of this wave band is compared with long wave higher.This wave band is also transmission mode detection grain institute Wave band.The mode of the solid particulate matters such as existing transmission mode, diffusing reflection mode both near infrared detection grains is contrasted, The fibre-optical probe of the present invention eliminates the flows such as sampling, dress sample without sample cell;Simultaneously because light path is longer, largely Avoid the influence of granularity;The fibre-optical probe of the present invention make use of the mobility of the solid particulate matters such as grain, be inserted directly into grain Used in the solid particulate matters such as food, it is convenient to be applied to desk-top, portable instrument.The fibre-optical probe of the present invention and sampling sharp-pointed tube shape class Seemingly, this probe can be inserted into packaging bag or is detected in the solid particulate matter such as grain in bulk by operator, so as to To cancel sampling sharp-pointed tube sampling operation, and dress sample operation during near infrared detection.This probe can be improved at many scenes point Analyse the efficiency of occasion detection.
The diffusing transmission mode that the present invention uses reaches the light of detector since light path is larger, and light path is close with transmission mode, Influenced by granularity also smaller.When actually using this probe, grain in bulk can be inserted directly into as using sampling sharp-pointed tube Deng in solid particulate matter, or in the grain of insertion knitting bagged, so as to cancel sampling sharp-pointed tube sampling operation, and near-infrared Dress sample operation during detection.
Brief description of the drawings
Fig. 1 is the outside that a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing of the present invention is popped one's head in Front view.
Fig. 2 is the outside that a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing of the present invention is popped one's head in Left view.
Fig. 3 is that a kind of corresponding optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing of embodiment 1 is popped one's head in Structure diagram;Emergent light and incident light are all conducted using fiber optic bundle at this time.
Fig. 4 is that a kind of corresponding optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing of embodiment 2 is popped one's head in Structure diagram;Incident light is conducted using fiber optic bundle at this time, and emergent light is conducted without using fiber optic bundle, and secondary light source is integrated in probe It is internal.
Fig. 5 is a kind of the unrestrained of optical fiber diffusing transmission formula probe for solid particulate matter spectrum Non-Destructive Testing of the present invention The fundamental diagram penetrated.
Fig. 6 is the first scheme of installation of the second speculum.
Fig. 7 is second of scheme of installation of the second speculum.
Fig. 8 is the third scheme of installation of the second speculum.
The implication of reference numeral is as follows:
1- shells, 2- exit windows, 3- entrance windows, 4- incident opticals beam, the first speculums of 5-, 6- the output optical fibers beam, 7- Two-mirror, 8- plane mirrors, 9- long sides are coated with the entity right-angle prism, 10- secondary light sources, 11- conducting wires of reflectance coating.
Embodiment
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited In this.
Embodiment 1
Such as Fig. 1,2,3,5, a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in, including outer Shell, exit window, entrance window, emergent ray issue device, incident optical beam, the first speculum, wherein exit window, entrance window installation In the same side of shell and towards same direction, emergent ray issue device, which conducts emergent light to exit window, enters solid Grain thing, emergent light enters by the diffuse transmission light that solid particulate matter is formed through entrance window obtains incident ray, incident ray warp First speculum changes direction and enters the export of incident optical beam.
The emergent ray issue device includes the first light source, the output optical fiber beam, wherein the second speculum, the output optical fiber beam The light of first light source is conducted to the second speculum, solid particle is entered back through exit window through the second speculum change side In thing.
Second speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
The spectrum of first light source is 600~1100nm, first light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
Exit window and entrance window use the material that can pass through 700~1100nm light.Two probe between spacing according to The transmitance of different samples is different and optimizes, and spacing is about 2cm~4cm.
The output optical fiber beam, incident optical beam are made of a plurality of optical fiber, can conduct the light of 700~1100nm wave bands.Fiber optic bundle End face close to speculum one end is plane, and end face is vertical with center probe axis.
The output optical fiber beam can connect the near-infrared light sources such as halogen lamp, and incident optical beam can connect universal near infrared spectrometer Or the near infrared spectrometer exclusively for the solid particulate matter design such as detection grain, oil crop seeds.
Embodiment 2
Such as Fig. 1,2,4,5, embodiment 2 and embodiment 1 difference lies in:Emergent light and incident light are not all to use fiber optic bundle Conduction;In example 2, incident light is conducted using fiber optic bundle, and emergent light is conducted without using fiber optic bundle, and secondary light source is integrated in spy Head is internal.
The emergent ray issue device includes secondary light source, and secondary light source is placed in shell and faces exit window, the The light that two light sources are sent is directly over exit window and enters in solid particulate matter.
The spectrum of the secondary light source is 600~1100nm, the secondary light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
First speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
The entity right-angle prism that the long side is coated with reflectance coating is separately set with entrance window, or merges into one with entrance window A solid prism.
The bottom of the shell is thin cylindric.Fibre-optical probe is so facilitated to be inserted into solid particulate matter.
In embodiment 1,2, the first speculum, the second speculum have three kinds of mounting means, by taking the second speculum as an example:
The first:Such as Fig. 6, the second speculum is plane mirror, and the reflective surface of plane mirror goes out with vertically arranged Penetrate window in angle of 45 degrees.
Second:Such as Fig. 7, the second speculum is entity right-angle prism, and entity right-angle prism is separately set with exit window.
The third:Such as Fig. 8, the second speculum is entity right-angle prism, and entity right-angle prism merges into one with exit window A solid prism.
The facilities of first speculum are same, repeat no more.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from above-described embodiment Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (10)

1. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in, it is characterised in that:Including shell, go out Window, entrance window, emergent ray issue device, incident optical beam, the first speculum are penetrated, wherein exit window, entrance window is installed on outer The same side of shell and towards same direction, emergent ray issue device, which conducts emergent light to exit window, enters solid particle Thing, emergent light enters by the diffuse transmission light that solid particulate matter is formed through entrance window obtains incident ray, and incident ray is through the One speculum changes direction and enters the export of incident optical beam.
2. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 1, it is special Sign is:The emergent ray issue device includes the first light source, the output optical fiber beam, wherein the second speculum, the output optical fiber beam The light of first light source is conducted to the second speculum, solid particle is entered back through exit window through the second speculum change side In thing.
3. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 2, it is special Sign is:Second speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
4. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 3, it is special Sign is:The entity right-angle prism that the long side is coated with reflectance coating is separately set with exit window, or merges into one with exit window A solid prism.
5. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 2, it is special Sign is:The spectrum of first light source is 600~1100nm, first light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
6. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 1, it is special Sign is:The emergent ray issue device includes secondary light source, and secondary light source is placed in shell and faces exit window, and second The light that light source is sent is directly over exit window and enters in solid particulate matter.
7. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 6, it is special Sign is:The spectrum of the secondary light source is 600~1100nm, the secondary light source for halogen tungsten lamp or spectrum 600~ Continuously distributed LED light source in the range of 1100nm.
8. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 1, it is special Sign is:First speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
9. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 8, it is special Sign is:The entity right-angle prism that the long side is coated with reflectance coating is separately set with entrance window, or merges into one with entrance window A solid prism.
10. a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head according to claim 1, it is special Sign is:The bottom of the shell is thin cylindric;Spacing between the exit window and entrance window is 2cm~4cm.
CN201711371162.6A 2017-12-19 2017-12-19 A kind of optical fiber diffusing transmission formula for solid particulate matter spectrum Non-Destructive Testing is popped one's head in Withdrawn CN107917891A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109100333A (en) * 2018-09-21 2018-12-28 深圳市长隆科技有限公司 Reflective probe and fluid on-line detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109100333A (en) * 2018-09-21 2018-12-28 深圳市长隆科技有限公司 Reflective probe and fluid on-line detector

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Application publication date: 20180417