CN207571022U - 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 PDFInfo
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- CN207571022U CN207571022U CN201721775694.1U CN201721775694U CN207571022U CN 207571022 U CN207571022 U CN 207571022U CN 201721775694 U CN201721775694 U CN 201721775694U CN 207571022 U CN207571022 U CN 207571022U
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Abstract
The utility model discloses a kind of optical fiber diffusing transmission formula probes for solid particulate matter spectrum non-destructive testing, including shell, exit window, entrance window, emergent ray issue device, incident optical beam, first speculum, wherein exit window, entrance window is mounted 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 enters by the diffuse transmission light that solid particulate matter is formed through entrance window obtains incident ray, incident ray changes direction through the first speculum and enters the export of incident optical beam.The existing transmission of the utility model comparison, diffusing reflection detection mode, this diffusing transmission formula probe eliminate sample cell, do not need to sample, fill the operating process such as sample, more convenient to use, detection efficiency higher.
Description
Technical field
The utility model is related to near-infrared spectrum analysis fields, more particularly to a kind of to be used for the lossless inspection of solid particulate matter spectrum
The optical fiber diffusing transmission formula probe of survey.
Background technology
Certain several composition 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 fractions such as grain is obtained in the harvest of grain, purchase, storage and transportation, processing
The stages of grade are significant, for example buyer agent can fix the price according to the quality according to Protein Content in Wheat information, and Flour production quotient can be with
It is 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 do not need to reagent, 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 the U.S., Canada, China incited somebody to action
The method of some near infrared detection grain ingredients 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, and need
Sample is placed in rotating sample pool, rotates sample, repeatedly measures and 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 are required for sample being placed in sample cell, need 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 largely to 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 do not need to dress 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, still lack do not need to the operation of dress sample, energy at present
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 is needed across sample, and part light is absorbed, and sample is calculated according to the absorption spectrum detected
The composition 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 does not need to dress sample operation in this way, greatly increases
The convenience of field assay application.There are many transmission-type probe for liquid detecting, such as US in near-infrared analysis field at present
The design of patent 5418615.But grain is larger, and larger light path is needed to make transmitted light more uniform, current transmission
Formula probe light path is too small, is not appropriate for for the detection of the solid particulate matters such as grain.
Utility model content
The main purpose of the utility model is that the shortcomings that overcoming the prior art and deficiency, provide a kind of for solid particle
The optical fiber diffusing transmission formula probe of object light spectrum non-destructive testing, carries out the solid particulate matters such as grain, oil crop seeds, feed granules
The diffusing transmission formula fibre-optical probe of non-destructive testing.Belong to the attachment of near-infrared spectrometers, be suitble to portable and desk-top near-infrared
Analyzer uses.
The purpose of this utility model 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 mounted 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 ingredient
Analysis, the detection device devices such as including near-infrared spectrometers.
The emergent ray issue device includes 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 object.
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 the first light source is 600~1100nm, the 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 second light source, and second light source is placed in shell and faces exit window, the
The light that two light sources are sent out is directly over exit window and enters in solid particulate matter.
The spectrum of the second light source is 600~1100nm, the second 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 facilitated to be inserted into solid particulate matter in this way.
Spacing between the exit window and entrance window is 2cm~4cm.
The utility model compared with prior art, has the following advantages that and advantageous effect：
The fibre-optical probe of the utility model is mainly used for the short wavelength-NIR region of 600~1100nm, for grain, oil plant
The solid particulate matters such as crop seed, the light transmission rate of this wave band is compared with long wave higher.This wave band is also transmission mode detection grain
Food wave band used.Compare the solid particulate matters such as existing transmission mode, diffusing reflection mode both near infrared detection grains
Mode, the fibre-optical probe of the utility model eliminate the flows such as sampling, dress sample without sample cell；Simultaneously because light path is longer, very
The influence of granularity is avoided in big degree；The flowing of the solid particulate matters such as grain is utilized in the fibre-optical probe of the utility model
Property, it is inserted directly into the solid particulate matters such as grain and uses, it is convenient to be applied to desk-top, portable instrument.The optical fiber of the utility model
Probe is similar with sampling sharp-pointed tube shape, and operator can will be in the insertion packaging bag of this probe or the solid particulate matters such as grain in bulk
In be detected, so as to cancel when sampling sharp-pointed tube sampling operation and near infrared detection dress sample operation.This probe can be with
Improve the efficiency detected in many field assay occasions.
The diffusing transmission mode that the utility model uses reaches the light of detector since light path is larger, light path and transmission mode phase
Closely, it is influenced by granularity also smaller.When actually using this probe, it can be inserted directly into bulk as using sampling sharp-pointed tube
It in the solid particulate matters such as grain or is inserted into the grain of knitting bagged, so as to cancel sampling sharp-pointed tube sampling operation and near
Dress sample operation during infrared detection.
Description of the drawings
Fig. 1 is that a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum non-destructive testing described in the utility model is popped one's head in
Exterior frontal view.
Fig. 2 is that a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum non-destructive testing described in the utility model is popped one's head in
External 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 second light source is integrated in probe
It is internal.
Fig. 5 is that a kind of optical fiber diffusing transmission formula for solid particulate matter spectrum non-destructive testing described in the utility model is popped one's head in
The fundamental diagram of diffusing transmission.
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 meaning 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- second light sources, 11- conducting wires of reflectance coating.
Specific embodiment
The utility model is described in further detail with reference to embodiment and attached drawing, but the implementation of the utility model
Mode is without being limited thereto.
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 object, 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 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 object.
Second speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
The spectrum of the first light source is 600~1100nm, the 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
It is plane close to the end face of speculum one end, 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 matters 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 second light source is integrated in spy
Head is internal.
The emergent ray issue device includes second light source, and second light source is placed in shell and faces exit window, the
The light that two light sources are sent out is directly over exit window and enters in solid particulate matter.
The spectrum of the second light source is 600~1100nm, the second 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 facilitated to be inserted into solid particulate matter in this way.
In embodiment 1,2, the first speculum, the second speculum are there are three types 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 utility model, but the embodiment of the utility model is not by above-mentioned
The limitation of embodiment, the change made under other any Spirit Essences and principle without departing from the utility model are modified, are replaced
In generation, simplifies combination, should be equivalent substitute mode, is included within the scope of protection of the utility model.
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 mounted 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
Object, 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, special
Sign is：The emergent ray issue device includes 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 object.
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, 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, 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, special
Sign is：The spectrum of the first light source is 600~1100nm, the 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, special
Sign is：The emergent ray issue device includes second light source, and second light source is placed in shell and faces exit window, and second
The light that light source is sent out 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, special
Sign is：The spectrum of the second light source is 600~1100nm, the second 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, 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, 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, special
Sign is：The bottom of the shell is thin cylindric；Spacing between the exit window and entrance window is 2cm~4cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721775694.1U CN207571022U (en) | 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721775694.1U CN207571022U (en) | 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 |
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| Publication Number | Publication Date |
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| CN207571022U true CN207571022U (en) | 2018-07-03 |
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| CN201721775694.1U Active CN207571022U (en) | 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 |
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