CN107941746A - A kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in - Google Patents
A kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in Download PDFInfo
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- CN107941746A CN107941746A CN201711370932.5A CN201711370932A CN107941746A CN 107941746 A CN107941746 A CN 107941746A CN 201711370932 A CN201711370932 A CN 201711370932A CN 107941746 A CN107941746 A CN 107941746A
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- 239000000523 sample Substances 0.000 title claims abstract description 147
- 239000007787 solid Substances 0.000 title claims abstract description 60
- 239000013618 particulate matter Substances 0.000 title claims abstract description 45
- 238000001228 spectrum Methods 0.000 title claims abstract description 24
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 230000008054 signal transmission Effects 0.000 claims abstract description 6
- 238000003491 array Methods 0.000 claims description 31
- 239000013307 optical fiber Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 235000013339 cereals Nutrition 0.000 description 23
- 238000004458 analytical method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000003556 assay Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000004497 NIR spectroscopy Methods 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
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- 239000003317 industrial substance Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
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- Biochemistry (AREA)
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- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of double probe transmission-types probe for solid particulate matter spectrum Non-Destructive Testing, including light source probe, detection probe, fixing device, wherein light source probe, detection probe are arranged in parallel on the securing means, and the exit window set on light source probe faces the entrance window set in detection probe；Emergent ray issue device is installed in light source probe, detection device is installed in detection probe, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, emergent light enters by the transmitted light that solid particulate matter is formed through entrance window obtains incident ray, incident ray is received by detection device, and the optical signal for receiving incident ray is converted to electric signal transmission and gone out by detection device.The existing transmission of present invention contrast, diffusing reflection detection mode, this transmission-type 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
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
Double probe transmission-type probes.
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, buyer agent can fix the price according to the quality according to Protein Content in Wheat information, and Flour production business can basis in the stage
The protein content information adjustment production 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 America and Europes, external many grain processing plant, feed-processing plant, pharmaceutical factories etc. have
Near-infrared spectrometers, the recent decades country also begin to use this technology.Many countries, such as U.S., Canada, China
The method of some near infrared detection grain components is set to standard method (such as AACC Method 39-25).
At present transmission method and diffusing reflection side are mainly used using solid particulate matters such as NIR technology detection grains
Method, tool.For many solid particulate matter samples, transmission mode effect is more preferable, and application is more, is generally used for desk-top instrument (US
Patent 5241178, FOSS, Infratec TM 1241).At present using transmission method detection solid particulate matter, it is necessary to by sample
Product are placed in sample cell, it is necessary to sample, fill the operating process such as sample.Many detection demands of grain belong to field assay, such as merchandise
Scene, warehouse etc., cumbersome operation are more suitable for laboratory rather than field assay application.Many scenes of near-infrared spectrum analysis
Maturity detection, the storehouse management of industrial chemicals, have begun to largely use hand-held closely red when analysis application is such as fruit harvest
External spectrum analyzer, such as the F-750 of Felix Instruments Inc., also there is the patent of this kind of probe or instrument in the country
(CN101799401A, CN103822900A, CN104034674A), these equipment need not fill sample operation, can to fruit or
Solid powder is directly detected, but these equipment can not be used to detect the solid particulate matters such as grain, is still lacked at present not
Need the spectroanalysis instrument that fills sample operation, can be directly detected to grain, particularly handheld instrument.Solve near-infrared
The problem of spectrum analysis is difficult to be used for grain field assay, it is necessary to find new detection mode, substitute existing dress sample detection side
Formula.The big solid particulate matter sample such as grain oil crop seeds has a certain fluidity, and when detection can treat as fluid, can design
Special probe, is inserted into sample and is detected using transmission mode, can but lack at present in Near-Infrared Spectroscopy Instruments
Instrument or probe are inserted directly into the transmission-type detection device being detected in the solid particulate matters such as grain.Near-infrared point at present
Analysis field has a variety of transmission-types for liquid detecting to pop one's head in, such as the design of US patent 5418615.But the solid such as grain
The particle of particulate matter is larger, it is necessary to which larger light path makes transmitted light more uniform, and current transmission-type probe is by light path arrangement one
In a probe, light path is too small, big even without the diameter of some grains, is suitable only for detection liquid, is not appropriate for being used for grain etc.
Solid particulate matter sample detection.Increasing the volume of single probe merely can cause probe size excessive to increase light path.
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
Double probe transmission-types probe of Non-Destructive Testing is composed, the solid particulate matters such as grain, oil crop seeds, feed granules can be carried out
Non-Destructive Testing, belongs to the annex of near-infrared spectrometers, is adapted to be used cooperatively with portable and desk-top near-infrared analyzer.
The purpose of the present invention is realized by following technical solution：
A kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in, including light source probe, detection are visited
Pin, fixing device, wherein light source probe, detection probe are arranged in parallel on the securing means, the exit window set on light source probe
Face the entrance window set in detection probe；Emergent ray issue device is installed in light source probe, is installed in detection probe
There is detection device, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, and emergent light is by solid
The transmitted light that body particulate matter is formed enters through entrance window obtains incident ray, and incident ray is received by detection device, detection dress
Put and the optical signal for receiving incident ray is converted into electric signal transmission goes out.Detection device converts optical signals to electric signal biography
The defeated collection arrived outside probe, processing, display system, are further processed.
The detection device includes beam splitter, detector array, and entrance window, beam splitter, detector array are arranged successively
Row；Incident ray reaches detector array after beam splitter is divided, and detector array changes the optical signal of incident ray
Go out for electric signal transmission.
The beam splitter optical fiber array plate, filter arrays, entrance window, optical fiber array plate, filter arrays, array are visited
Device is surveyed to be arranged in order.
The optical fiber array plate is M short fibers arranged in parallel, for limiting the incident ray into filter arrays
Angle, wherein M >=1；The array that the filter arrays form for N number of narrow band pass filter or linear variable filter, its
Middle N >=1.
The filter arrays are one-dimensional filter arrays, and the detector array is linear array detector, or described
Filter arrays are two-dimentional filter arrays, and the detector array is area array detector.
The emergent ray issue device includes the first light source, the output optical fiber beam, wherein the first speculum, the output optical fiber beam
The light of first light source is conducted to the first speculum, solid particle is entered back through exit window through the first 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 emergent ray issue device includes secondary light source, and secondary light source is placed in light source probe and faces outgoing
Window, the light that secondary light source is sent are directly over exit window and enter in solid particulate matter.
The emergent ray issue device, which is used, continuously distributed broad spectrum light source in 600~1100nm wave bands, described
Broad spectrum light source includes halogen tungsten lamp light source, wide spectrum LED.
Spacing between the light source probe, detection probe is 1cm~5cm.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
1st, the present invention places light-emitting device with receiving the dress of light respectively by probe designs into two probes in two probes
Put, increase the distance between two probes so as to increase light path, solid particulate matter is also visited as liquid by plug-in type
Head is detected.
It can be detected, and used without using continuous spectrum using the information of near-infrared spectrum analysis test sample partial elements
The spectral signal detection of several discrete wavelengths.Optical filter type instrument is just divided using multiple discrete optical filters, is obtained several discrete
The spectral information of wavelength.There is the instrument such as United States Patent (USP) US5241178 using rotating filtering piece disk at present, this belongs to front light splitting side
Formula.Also there is document to propose to detect using filter arrays or linear variable filter light splitting, detector array, belong to light splitting afterwards side
Formula, the design of patent CN 103364360B just use moisture of the similar structures by way of reflection in testing soil.Pass through filter
Filter Array is combined closely with detector array can simplify apparatus structure, reduce optical system volume.But CN
103364360B diffuses designed for detection, and in addition instrument uses fiber optic conduction light, and light splitting and detection part are still put
Outside probe, volume is larger.Filter arrays are combined and are placed in probe by the present invention with detector array, while by light source
It is placed in probe, such light source is all placed in probe with light splitting, probe portion, and can make can be inserted into solid particulate matter sample
Transmission-type detection probe, reduces the loss of middle light conduction, there is presently no similar design.
2nd, the present invention is used to detect the solid particulate matter compositional information such as grain, make use of the solid particulate matter sample such as grain
Mobility, is inserted directly into sample and uses.The near infrared spectroscopy instrument being detected at present using transmission is, it is necessary to using sample
Pond is, it is necessary to sample, fill the flows such as sample.Use the present invention, it is possible to achieve the solid particulate matters such as grain are carried out using transmission method
Near infrared detection, it is not necessary to sample, fill the flows such as sample.This probe is suitably applied portable instrument, can be used for desk-top
Instrument, this probe can improve the detection efficiency in many field assay occasions.
Brief description of the drawings
Fig. 1 is the structure that a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing of the present invention are popped one's head in
Schematic diagram.
Fig. 2 is the one-dimensional filter arrays arrangement schematic diagram of double probe transmission-type probes shown in Fig. 1.
Fig. 3 is the two-dimentional filter arrays arrangement schematic diagram of double probe transmission-type probes shown in Fig. 1.
Wherein, reference numeral implication is as follows：
1- light sources probe, 2- detection probes, 3- fixing devices, 4- exit windows, 5- entrance windows, 6- optical fiber array plates, 7- filters
Filter Array, 8- detector arrays, the first conducting wires of 9-, 10- secondary light sources, the second conducting wires of 11-, 12- optical filters.
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.
Such as Fig. 1,2, a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in, including light source is visited
Pin, detection probe, fixing device, wherein light source probe, detection probe are arranged in parallel on the securing means, are set on light source probe
Exit window face the entrance window set in detection probe；Emergent ray issue device is installed, detection is visited in light source probe
Detection device is installed, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, outgoing in pin
Light enters by the transmitted light that solid particulate matter is formed through entrance window obtains incident ray, and incident ray is connect by detection device
Receive, the optical signal for receiving incident ray is converted to electric signal and is gone out by the first wire transmission by detection device.
With two probes that may be inserted into sample, the solid particulate matters such as grain are detected using transmission mode.Light source
Probe portion with receiving transmitted light is respectively placed in two thin tubular probe, and two probes are respectively that light source probe and detection are visited
Pin.The probe portion that light is received in detection probe is placed in face of light source.Two probes are inserted into detection sample at the same time during detection,
The light that light source is sent, partly passes through sample by transmission process, and the detection device being detected in probe detects, and detector receives
Be transmitted light by sample.
There is certain spacing between two probes, for spacing between 1cm~5cm, this distance is more than solid particle to be measured
Several times of the diameter of thing, usually solid particulate matter diameter to be measured, different distances is used according to the difference of sample transmitance.
The fixing device of two probes of connection can be the device that can be adjusted manually into row distance, be arranged to not when detecting different samples
Same distance.
Such as Fig. 1, a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in, and mainly have two thin circle
Tubular probe (light source probe, detection probe) forms.There is secondary light source in light source probe, secondary light source is connected with the second conducting wire,
Detection device is provided with detection probe.There is the fixing device of two probes of connection between two probes, two probes of connection
Fixing device can be the fixed structure that cannot be adjusted, and the distance of two probes can not change, or for that can manually adjust
Structure, the distance of two probes can manually adjust.
Light source probe, the shell of detection probe are made of protection cylinder, exit window, entrance window.Exit window face entrance window, this
The light of sample light source probe enters in solid particulate matter sample from exit window, reaches entrance window by being transmitted to.
There is secondary light source in light source probe, secondary light source can be halogen tungsten lamp light source, wide spectrum LED etc. 600~
1100nm wave bands have continuously distributed light source.
Detection device in detection probe, is made of optical fiber array plate, filter arrays, permutation detector.Fiber array
Plate is used for the angle for limiting filter arrays incident light.Optical fiber array plate is a large amount of short fibers arranged in parallel.Optical fiber only allows
The light of small incident is by that can prevent the light of wide-angle to be irradiated on filter arrays.
Filter arrays are the array of multiple narrow band pass filters composition, and the definite needs of specific wavelength are according to different grain
Deng solid particulate matter sample, preferably come out by near-infrared spectral analytical method.That filters in filter arrays is arranged with a variety of shapes
Formula.Filter arrays are one-dimensional in Fig. 2, and filter arrays are two-dimentional in Fig. 3, but the quantity of optical filter and arrangement mode
It is not limited to Fig. 2, the 3 two kinds of structures listed.Filter arrays can also be linear variable filter.
Detector array can be linear array detector, coordinate one-dimensional filter arrays to use, or be face array detection
Device, coordinates two-dimentional filter arrays to use.Required power supply, clock signal and the detector output signal of detector array by
Conducting wire is connected to the circuit parts such as the control outside popping one's head in, collection.Detector array is linear array detector or area array detector,
The different zones of detector array receive the monochromatic light obtained after different optical filter light splitting, so as to obtain each discrete wavelength spectrum
The information of intensity.
Using probe detection grain when solid particulate matter, light source probe and detection probe are inserted into solid particulate matter sample
In, exit window, entrance window need to be immersed in solid particulate matter sample.The light that secondary light source is sent enters solid particle through exit window
In thing sample, enter entrance window by the transmitted light of solid particulate matter sample, by optical fiber array plate by the incident photoresist of wide-angle
Block, the incident light of low-angle is irradiated on filter arrays, is received after light splitting by detector array, and detector array is by light
Signal is converted to electric signal transmission to the collection outside probe, processing, display system.
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 double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in, it is characterised in that：Visited including light source
Pin, detection probe, fixing device, wherein light source probe, detection probe are arranged in parallel on the securing means, are set on light source probe
Exit window face the entrance window set in detection probe；Emergent ray issue device is installed, detection is visited in light source probe
Detection device is installed, emergent ray issue device, which conducts emergent light to exit window, enters solid particulate matter, outgoing in pin
Light enters by the transmitted light that solid particulate matter is formed through entrance window obtains incident ray, and incident ray is connect by detection device
Receive, the optical signal for receiving incident ray is converted to electric signal transmission and gone out by detection device.
2. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 1, it is special
Sign is：The detection device includes beam splitter, detector array, and entrance window, beam splitter, detector array are arranged successively
Row；Incident ray reaches detector array after beam splitter is divided, and detector array changes the optical signal of incident ray
Go out for electric signal transmission.
3. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 2, it is special
Sign is：The beam splitter optical fiber array plate, filter arrays, entrance window, optical fiber array plate, filter arrays, array are visited
Device is surveyed to be arranged in order.
4. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 3, it is special
Sign is：The optical fiber array plate is M short fibers arranged in parallel, for limiting into the incident ray of filter arrays
Angle, wherein M >=1；The array that the filter arrays form for N number of narrow band pass filter or linear variable filter, wherein N
≥1。
5. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 3, it is special
Sign is：The filter arrays are one-dimensional filter arrays, and the detector array is linear array detector, or the filter
Filter Array is two-dimentional filter arrays, and the detector array is area array detector.
6. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are 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 first speculum, the output optical fiber beam
The light of first light source is conducted to the first speculum, solid particle is entered back through exit window through the first speculum change side
In thing.
7. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 6, it is special
Sign is：Second speculum is coated with the entity right-angle prism of reflectance coating for plane mirror or long side.
8. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 7, 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.
9. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are 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 light source probe and faces exit window,
The light that secondary light source is sent is directly over exit window and enters in solid particulate matter.
10. a kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head according to claim 1, it is special
Sign is：The emergent ray issue device, which is used, continuously distributed broad spectrum light source, the width in 600~1100nm wave bands
Spectroscopic light source includes halogen tungsten lamp light source, wide spectrum LED；Spacing between the light source probe, detection probe is 1cm~5cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370932.5A CN107941746A (en) | 2017-12-19 | 2017-12-19 | A kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370932.5A CN107941746A (en) | 2017-12-19 | 2017-12-19 | A kind of double probe transmission-types for solid particulate matter spectrum Non-Destructive Testing are popped one's head in |
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