CN107727607A - A kind of integrated spectral imager suitable for living resources detection - Google Patents
A kind of integrated spectral imager suitable for living resources detection Download PDFInfo
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- CN107727607A CN107727607A CN201710950192.6A CN201710950192A CN107727607A CN 107727607 A CN107727607 A CN 107727607A CN 201710950192 A CN201710950192 A CN 201710950192A CN 107727607 A CN107727607 A CN 107727607A
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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
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
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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
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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
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
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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
- G01N21/3563—Investigating 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
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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
- G01N2021/1734—Sequential different kinds of measurements; Combining two or more methods
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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
- G01N2021/1765—Method using an image detector and processing of image signal
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/127—Calibration; base line adjustment; drift compensation
Abstract
The invention discloses a kind of integrated spectral imager suitable for living resources detection, the instrument is made up of embedded master controller, Terahertz scanning imagery subsystem, multispectral imaging subsystem, sample room and wireless lan transceiver.The invention has the advantages that providing the means of illumination in the even ray laser source of super continuous spectrums, the correction of combined standard black and white plate, the tissue signatures such as structure, the texture of important living resources sample are obtained；Using Terahertz scanning lens imaging method, the moisture content feature of acquisition important living resources sample；Integrated spectral imaging method is advantageous to obtain the spectrum picture containing much information, facilitates customs's inlet and outlet detection quarantine departments to carry out tracing to the source, differentiate and protecting for important living resources.
Description
Technical field
The present invention relates to a kind of integrated spectral imager, more particularly to one kind to use the even ray laser source lighting mark of super continuous spectrums
Quasi-reflection formula is imaged, and the integrated spectral imager of the standard transmission-type imaging of monochromatic light beam scanning THz source, suitable for treasure
The structure of dilute animal vegetable tissue sample and aqueous distribution imaging, belong to photoelectronic imaging field.
Background technology
In inlet and outlet field, various countries mostly take the measure strictly controlled to the inlet and outlet of important living resources.Such as
Dong Zhi Quarantine Bureaus of United States Department of Agriculture provide, forbid the inhereditary materials such as domestic animal, hatching egg, animal semen, blood sample, embryo, excreta to go out
Immigration.In recent years, the animals and plants of Chinese exports are increased year by year, but original producton location identification, physical property and the something lost of current not yet Erecting and improving
Pass the metadatabases such as sign.Strengthen the protection to special strategic living resources and original producton location is traced to the source and studies and develop all kinds of something lost
The non-contact detection system for passing resource sample is imperative.
In the physical property and genetic characterization member number of the important living resources such as rare animals and plants cauline leaf, histotomy sample, feather
According in terms of the structure of storehouse, high-resolution multispectral image can reflect that its structure, texture, optics, aqueous, form etc. are many
Feature, it is feasible efficient technological means.
The present invention uses the spectrum imaging method in the even ray laser source of super continuous spectrums, for obtaining rare animals and plants cauline leaf, group
Knit the visible of the section Animal resources sample such as sample and in the infrared multispectral standard reflectivity image of spectral coverage；Using monochromatic light beam scanning
The method of THz source obtains its Terahertz spectral coverage standard transmitance image.Invented under the support of two kinds of technologies a kind of for treasure
The integrated spectral imager of dilute animals and plants inlet and outlet protection, the physical property available for animal and plant resource build storehouse and examination, facilitate customs
Inlet and outlet detection quarantine departments carry out tracing to the source, differentiate and protecting for important living resources.
The content of the invention
It is an object of the invention to provide a kind of imaging of standard reflection formula super continuous spectrums and scanning Terahertz transmission imaging
Integrated imaging instrument, can obtain the important living resources samples such as rare animals and plants cauline leaf, histotomy sample, feather it is visible,
The standard transmitance image of middle infrared standard albedo image and Terahertz spectral coverage, for important living resources build storehouse, trace to the source,
Differentiate and protect.
The present invention is achieved like this：
Integrated spectral imager proposed by the present invention is by embedded master controller, more Terahertz scanning imagery subsystem, light
Compose imaging subsystems, sample room and wireless lan transceiver composition；
Wherein Terahertz scanning imagery subsystem is by emitting head, reception head, bidimensional electric platforms and scanning and switching control
Device forms；Emitting head includes THz source and terahertz sources lens；Receiving head includes Terahertz receiving lens and Terahertz biography
Sensor；Emitting head is installed with receiving head by axis coaxle of Terahertz optical axis, and is fixed on bidimensional electric platforms；Bidimensional is electronic
Platform can do two dimensional surface scanning in the case where scanning the control with switch controller；
Multispectral imaging subsystem by optical filter wheel, optical filter wheel controller, bandpass filter, super continuous spectrums laser,
Fibre-coupled mirrors, one point of multi fiber, light uniforming device, multispectral camera, multispectral imaging camera lens and semi-transparent semi-reflecting lens form；Optical filter
Multi-disc bandpass filter is housed on wheel, laser beam axis can be cut successively under the control of optical filter wheel controller；
After thering is specimen holder, standard blackboard, standard white plate and switch, sample to put into specimen holder in sample room, sample is inserted
Room corresponds to notch；Switch controls the substrate of switching standards blackboard or standard white plate as sample room；
Super continuous spectrums laser sends the super continuous spectrums laser of the visible infrared spectral coverage into, is transmitted along laser beam axis, through light
After fine coupling mirror and a certain bandpass filter, export as the laser of a certain passband, be coupled into one point of multi fiber, carry out one to multiple point
Beam；Uniformly placement is distributed in light uniforming device plane the multi output optical fiber of one point of multi fiber；Light uniforming device plane is diffusing transmission plane, can
Make to obtain even light effect through light beam；Passband laser beam after even light reflects rear steering primary optical axis through semi-transparent semi-reflecting lens, uniformly shines
It is bright that its reflected light is along primary optical axis reverse transfer on the sample of sample room, through semi-transparent semi-reflecting lens, through multispectral imaging camera lens into
As on multispectral camera；Laser beam axis is coplanar with primary optical axis, and laser beam axis is perpendicular to primary optical axis；
THz source can send the electromagnetic wave of terahertz wave band, can be converged at through terahertz sources lens along Terahertz optical axis
In the target of certain distance；Scanning in addition to it can control bidimensional electric platforms and do two dimensional surface scanning, is gone back with switch controller
It can control it to drive emitting head, receive head incision and cut out the spatial dimension of sample room, be workspace during incision, be now to work
State；It is nonclient area when cutting out, is now off working state；In working condition, terahertz sources lens will be along Terahertz
The certain point that the THz wave that optical axis transmits is converged on sample；Bidimensional electric platforms do two dimensional surface scanning, can be achieved
To sample plane THz wave a little focus on；The THz wave transmitted from sample THz wave focus point continues along terahertz
Hereby optical axis transmits, and by Terahertz receiving lens, converges at Terahertz sensor and is received；Both primary optical axis and Terahertz optical axis
It is coplanar；
Host software in embedded master controller can realize the man-machine interaction of instrument, database sharing, inquiry, long-range biography
It is defeated, the fusion of image information, analysis, taxonomic history；Its input/output port control program can be realized receives and dispatches to WLAN
Device, switch, optical filter wheel controller, THz source, scanning and switch controller, super continuous spectrums laser, multispectral camera
With the control of Terahertz sensor, and the output image of multispectral camera and the output on single point signal of Terahertz sensor are received,
And immigration department cloud system is connected by wireless lan transceiver network connection, realize that the upload, download and high in the clouds of database are looked into
Ask；
Integrated spectral imaging method proposed by the present invention comprises the following steps：
(1) the multispectral black and white calibration of laser
Embedded master controller starts scanning and switch controller, and control bidimensional electric platforms drive emitting head, receive head
Into nonclient area, now Terahertz scanning imagery subsystem is off working state；Embedded main controller controls open super connect
Continuous spectrum laser and multispectral camera, start substrate of the switch using standard white plate incision as sample room, start optical filter wheel
First bandpass filter is cut laser beam axis by controller, and now the reflected light of the passband of standard white plate first is imaged at most light
Camera is composed, then the first passband standards white reflection image is mutually reached embedded master controller by multispectral machine；Embedded master control
Device processed starts switch and standard white plate is cut out into sample room, and the substrate using the incision of standard blackboard as sample room, now standard
The reflected light of the passband of blackboard first is imaged to multispectral camera, and then multispectral machine is mutually by the black reflectogram of the first passband standards
As reaching embedded master controller；
After the standard black and white reflected image acquisition for completing the first passband, embedded master controller starts optical filter wheel control
Second bandpass filter is cut laser beam axis by device, starts switch and standard blackboard cut out into sample room, and by standard white plate
Substrate as sample room is cut, now the reflected light of the passband of standard white plate second is imaged to multispectral camera, then light more
The second passband standards white reflection image is mutually reached embedded master controller by spectrum machine；Then, embedded master controller starts and cut
Standard white plate is cut out sample room, and the substrate using the incision of standard blackboard as sample room by parallel operation, and now standard blackboard second is logical
The reflected light of band is imaged to multispectral camera, and then the black reflected image of the second passband standards is mutually reached insertion by multispectral machine
Formula master controller；So as to complete the acquisition of the standard black and white reflected image of second passband；
Similarly, be sequentially completed the three, the 4th ... until the black and white reflected image of last passband obtains；
(2) Terahertz scanning transmission is calibrated
Embedded main controller controls close super continuous spectrums laser and multispectral camera；Embedded master controller, which starts, to be cut
Standard blackboard is cut out sample room by parallel operation；Embedded main controller controls open THz source, Terahertz sensor, start scanning
With switch controller, control bidimensional electric platforms drive emitting head, reception head to enter workspace, now Terahertz scanning imagery
System is working condition；Scanning drives emitting head, reception head to carry out two dimensional surface with switch controller control bidimensional electric platforms
Scan, plane where its scanning range covering specimen holder, in scanning process, Terahertz sensor gathers Terahertz transmitted wave point by point
Signal (note：Now because n.s are placed, therefore the transmission signal of every is all maximum), and send it to embedded master
Controller (note：By the selection of two-dimensional scan step-length, the Pixel Dimensions and laser super continuous spectrums figure of Terahertz scan image are realized
As Pixel Dimensions are consistent), obtained and above-mentioned standard reflected image pixel by embedded master controller split and space reverse process
Arrange consistent Terahertz full impregnated image；
(3) the multispectral catoptric imaging of laser
Embedded main controller controls close THz source and Terahertz sensor, embedded master controller start scanning with
Switch controller, control bidimensional electric platforms drive emitting head, reception head to enter nonclient area, now Terahertz scanning imagery
System is off working state；
After certain rare animals and plants sample is put into specimen holder, insertion sample room corresponds to notch；Embedded main controller controls
Open super continuous spectrums laser and multispectral camera, embedded master controller start optical filter wheel controller successively by first,
Second ..., until last a piece of bandpass filter incision laser beam axis, meanwhile, multispectral camera obtains sample each successively
The black matrix reflected image using standard blackboard as background under the illumination of passband uniform laser, and it is sent to embedded master controller；
(4) Terahertz transmission scan is imaged
Embedded main controller controls close super continuous spectrums laser and multispectral camera；Embedded master controller, which starts, to be cut
Standard blackboard is cut out sample room by parallel operation；Embedded main controller controls open THz source, Terahertz sensor, start scanning
With switch controller, control bidimensional electric platforms drive emitting head, reception head to enter workspace, now Terahertz scanning imagery
System is working condition；Scanning drives emitting head, reception head to carry out two dimensional surface with switch controller control bidimensional electric platforms
Scan, plane where its scanning range covering specimen holder, in scanning process, Terahertz sensor gathers Terahertz transmitted wave point by point
Signal (note：Now there is sample placement, therefore there will be absorption to THz wave when scanning element passes through sample, when scanning element falls
When outside sample area, its transmission signal is maximum), and embedded master controller is sent it to, by embedded master controller
Split and space reverse process obtain the Terahertz transmission image of the sample consistent with above-mentioned standard reflected image pixel arrangement；
(5) image calculates processing and builds storehouse
It is black that each passband black matrix reflected image of sample is subtracted each passband standards corresponding to it by embedded master controller respectively
Reflected image, then divided by its corresponding to each passband standards white reflection image, so as to obtain each passband standards reflectance map of sample
As (i.e. super continuous spectrums standard reflectivity image)；Embedded master controller is by the Terahertz transmission image divided by its Terahertz of sample
Full impregnated image, obtain Terahertz standard transmitance image；By the super continuous spectrums standard reflectivity image of the rare animals and plants sample,
The information fusion such as Terahertz standard transmitance image and its kind, the place of production, tissue, builds its biological structure, texture, moisture content
The physical property resource database such as cloth, and the database information of the sample is delivered into entry and exit portion by wireless lan transceiver network
Door cloud system；After completing substantial amounts of rare animals and plants sample database structure based on the instrument, with the instrument to unknown sample
Detection, after obtaining its super continuous spectrums standard reflectivity image and Terahertz standard transmitance image, with rare animals and plants sample number
Retrieved, contrasted, identified according to storehouse, you can carry out the place of production trace to the source, Species estimation etc., so as to effectively carry out important living resources guarantor
Shield, safeguards national bio-safety.
The invention has the advantages that the means of illumination in the even ray laser source of super continuous spectrums is provided, combined standard black and white plate
Correction, obtain the tissue signatures such as structure, the texture of important living resources sample；Using Terahertz scanning lens imaging method, obtain
Take the moisture content feature of important living resources sample；Integrated spectral imaging method is advantageous to obtain the spectrogram containing much information
Picture, customs's inlet and outlet detection quarantine departments are facilitated to carry out tracing to the source, differentiate and protecting for important living resources.
Brief description of the drawings
Fig. 1 is present system structural representation, in figure：1 --- embedded master controller；2 --- Terahertz is scanned into
As subsystem；3 --- scanning and switch controller；4 --- THz source；5 --- emitting head；6 --- Terahertz optical axis；
7 --- terahertz sources lens；8 --- sample room；9 --- specimen holder；10 --- sample；11 --- standard white plate；12——
Primary optical axis；13 --- receive head；14 --- optical filter wheel；15 --- optical filter wheel controller；16 --- bandpass filter；
17 --- laser beam axis；18 --- super continuous spectrums laser；19 --- fibre-coupled mirrors；20 --- one point of multi fiber；21——
Light uniforming device；22 --- multispectral camera；23 --- multispectral imaging subsystem；24 --- multispectral imaging camera lens；25 --- half
Saturating semi-reflective mirror；26 --- wireless lan transceiver；27 --- workspace；28 --- nonclient area；29 --- Terahertz senses
Device；30 --- bidimensional electric platforms；31 --- standard blackboard；32 --- switch；33 --- Terahertz receiving lens.
Embodiment
The specific embodiment of the invention is as shown in Figure 1.
Integrated spectral imager proposed by the present invention is by embedded master controller 1, Terahertz scanning imagery subsystem 2, more
Light spectrum image-forming subsystem 23, sample room 8 and wireless lan transceiver 26 form；
Wherein Terahertz scanning imagery subsystem 2 by emitting head 5, receive first 13, bidimensional electric platforms 30 and scanning with cutting
Changer controller 3 forms；Emitting head 5 includes THz source 4 and terahertz sources lens 7；Receiving first 13 includes Terahertz reception thoroughly
Mirror 33 and Terahertz sensor 29；Emitting head 5 is installed with receiving first 13 with Terahertz optical axis 6 for axis coaxle, and is fixed on two
Tie up on electric platforms 30；Bidimensional electric platforms 30 can do two dimensional surface scanning in the case where scanning the control with switch controller 3；
Multispectral imaging subsystem 23 is by optical filter wheel 14, optical filter wheel controller 15, bandpass filter 16, super continuous spectrums
Laser 18,19, one points of multi fibers 20 of fibre-coupled mirrors, light uniforming device 21, multispectral camera 22, multispectral imaging camera lens 24 and half
Saturating semi-reflective mirror 25 forms；Equipped with (the note of multi-disc bandpass filter 16 on optical filter wheel 14：The present embodiment is 6, by 400-2500nm
Spectral coverage is divided into 6 passbands), laser beam axis 17 can be cut successively under the control of optical filter wheel controller 15；
There are specimen holder 9, standard blackboard 31, standard white plate 11 and switch 32 in sample room 8, sample 10 puts into specimen holder 9
Afterwards, 8 corresponding notch of sample room is inserted；Switch 32 controls the base of switching standards blackboard 31 or standard white plate 11 as sample room
Bottom；
(the note of super continuous spectrums laser 18：Its spectral region of the present embodiment 400-2500nm, mean power 2W) send it is visible
Into, the super continuous spectrums laser of infrared spectral coverage, is transmitted along laser beam axis 17, through fibre-coupled mirrors 19 and a certain bandpass filter 16
Afterwards, export as the laser of a certain passband, be coupled into one point of multi fiber 20, carry out one to multiple beam splitting (note：The present embodiment uses one point
Ten six fiberses)；Uniformly placement is distributed in the plane of light uniforming device 21 the multi output optical fiber of one point of multi fiber 20；The plane of light uniforming device 21 is
Diffusing transmission plane, it can make to obtain even light effect through light beam；Passband laser beam after even light turns after the reflection of semi-transparent semi-reflecting lens 25
To primary optical axis 12, Uniform Illumination is on the sample 10 of sample room 8, and its reflected light is along the reverse transfer of primary optical axis 12, through semi-transparent half
Anti- mirror 25, is imaged onto on multispectral camera 22 through multispectral imaging camera lens 24；Laser beam axis 17 and primary optical axis 12 are coplanar, laser light
Axle 17 is perpendicular to primary optical axis 12；
THz source 4 can send the electromagnetic wave of terahertz wave band, can through terahertz sources lens 7 along Terahertz optical axis 6
Gather in the target of certain distance；Scanning is swept with switch controller 3 except bidimensional electric platforms 30 can be controlled to do two dimensional surface
Retouch outer, also can control it to drive emitting head 5, receive spatial dimensions of first 13 incision with cutting out sample room, be workspace during incision
27, it is now working condition；It is nonclient area 28 when cutting out, is now off working state；In working condition, terahertz sources
The certain point that lens 7 converge at the THz wave transmitted along Terahertz optical axis 6 on sample 10；Bidimensional electric platforms 30 are done
Two dimensional surface scan, can be achieved to the plane of sample 10 institute a little THz wave focusing；It is saturating from the THz wave focus point of sample 10
The THz wave of injection continues to transmit along Terahertz optical axis 6, by Terahertz receiving lens 33, converges at Terahertz sensor 29
Received；Both primary optical axis 12 and Terahertz optical axis 6 are coplanar；
Host software in embedded master controller 1 can realize the man-machine interaction of instrument, database sharing, inquiry, long-range
Transmission, the fusion of image information, analysis, taxonomic history；Its input/output port control program can be realized to be received to WLAN
Send out device 26, switch 32, optical filter wheel controller 15, THz source 4, scanning and switch controller 3, super continuous spectrums laser
18th, the control of multispectral camera 22 and Terahertz sensor 29, and receive the output image and Terahertz biography of multispectral camera 22
The output on single point signal of sensor 29, and immigration department cloud system is connected by the network of wireless lan transceiver 26 connection, realize number
Inquired about according to the upload, download and high in the clouds in storehouse；
Integrated spectral imaging method proposed by the present invention comprises the following steps：
(1) the multispectral black and white calibration of laser
Embedded master controller 1 starts scanning and switch controller 3, and control bidimensional electric platforms 30 drive emitting head 5, connect
Receive first 13 and enter nonclient area 28, now Terahertz scanning imagery subsystem 2 is off working state；Embedded master controller 1 is controlled
System opens super continuous spectrums laser 18 and multispectral camera 22, starts switch 32 and cuts standard white plate 11 as sample room
Substrate, start optical filter wheel controller 15 and first bandpass filter 16 is cut into laser beam axis 17, now standard white plate 11 the
The reflected light of one passband is imaged to multispectral camera 22, and then multispectral machine phase 22 is by the first passband standards white reflection image
Reach embedded master controller 1；Embedded master controller 1 starts switch 32 and standard white plate 11 is cut out into sample room, and will mark
Quasi- blackboard 31 cuts the substrate as sample room, and now the reflected light of the passband of standard blackboard 31 first is imaged to multispectral camera
22, then multispectral machine phase 22 the black reflected image of first passband standards is reached into embedded master controller 1；
After the standard black and white reflected image acquisition for completing the first passband, embedded master controller 1 starts optical filter wheel control
Second bandpass filter 16 is cut laser beam axis 17 by device 15 processed, starts switch 32 and standard blackboard 31 is cut out into sample room,
And standard white plate 11 is cut into the substrate as sample room, now the reflected light of the passband of standard white plate 11 second is imaged at most light
Camera 22 is composed, then the second passband standards white reflection image is reached embedded master controller 1 by multispectral machine phase 22；Then,
Embedded master controller 1 starts switch 32 and standard white plate 11 is cut out into sample room, and standard blackboard 31 is cut as sample
The substrate of room, now the reflected light of the passband of standard blackboard 31 second be imaged to multispectral camera 22, then multispectral machine phase 22
The black reflected image of second passband standards is reached into embedded master controller 1；So as to complete the standard black and white of second passband
The acquisition of reflected image；
Similarly, be sequentially completed the three, the 4th ... until last passband (note：The present embodiment is 6 passbands)
Black and white reflected image obtains；
(2) Terahertz scanning transmission is calibrated
Super continuous spectrums laser 18 and multispectral camera 22 are closed in the embedded control of master controller 1；Embedded master controller 1
Start switch 32 and standard blackboard 31 is cut out into sample room；(the note of THz source 4 is opened in the embedded control of master controller 1：This implementation
Be 2.5THz Terahertzs cascaded laser in example), Terahertz sensor 29, start scanning and switch controller 3, control bidimensional is electric
Moving platform 30 drives emitting head 5, receives first 13 into workspace 27, and now Terahertz scanning imagery subsystem 2 is working condition；
Scanning controls bidimensional electric platforms 30 to drive emitting head 5, reception first 13 to carry out two dimensional surface scanning with switch controller 3, and it is swept
The scope covering place plane of specimen holder 9 is retouched, in scanning process, Terahertz sensor 29 gathers Terahertz transmitted wave signal point by point
(note：Now because n.s 10 are placed, therefore the transmission signal of every is all maximum), and send it to embedded master control
(the note of device 1 processed：By the selection of two-dimensional scan step-length, the Pixel Dimensions and laser super continuous spectrums figure of Terahertz scan image are realized
Picture Pixel Dimensions are consistent, and the present embodiment image resolution ratio is 2560*1920), it is anti-by the embedded split of master controller 1 and space
The Terahertz full impregnated image consistent with above-mentioned standard reflected image pixel arrangement is obtained to processing；
(3) the multispectral catoptric imaging of laser
THz source 4 and Terahertz sensor 29 are closed in the embedded control of master controller 1, and embedded master controller 1 starts
Scanning and switch controller 3, control bidimensional electric platforms 30 drive emitting head 5, reception first 13 to enter nonclient area 28, now too
Hertz scanning imagery subsystem 2 is off working state；
After certain rare animals and plants sample 10 is put into specimen holder 9,8 corresponding notch of sample room is inserted；Embedded master controller 1
Super continuous spectrums laser 18 and multispectral camera 22 are opened in control, embedded master controller 1 start optical filter wheel controller 15 according to
It is secondary by first, second ..., until last a piece of bandpass filter 16 cuts laser beam axis 17, meanwhile, multispectral camera
22 obtain black matrix reflected image with standard blackboard 31 for background of the sample 10 under the illumination of each passband uniform laser successively, and pass
It is sent to embedded master controller 1；
(4) Terahertz transmission scan is imaged
Super continuous spectrums laser 18 and multispectral camera 22 are closed in the embedded control of master controller 1；Embedded master controller 1
Start switch 32 and standard blackboard 31 is cut out into sample room；THz source 4 is opened in the embedded control of master controller 1, Terahertz passes
Sensor 29, startup scanning and switch controller 3, control bidimensional electric platforms 30 drive emitting head 5, reception first 13 to enter workspace
27, now Terahertz scanning imagery subsystem 2 is working condition；Scanning controls the band of bidimensional electric platforms 30 with switch controller 3
Dynamic emitting head 5, receive first 13 and carry out two dimensional surface scanning, its scanning range covering place plane of specimen holder 9, in scanning process,
Terahertz sensor 29 gathers Terahertz transmitted wave signal (note point by point：Now there is sample 10 to place, therefore when scanning element passes through sample
To have absorption to THz wave during product, when scanning element falls outside sample area, its transmission signal is maximum), and passed
Embedded master controller 1 is sent to, is obtained and above-mentioned standard reflected image by the embedded split of master controller 1 and space reverse process
The Terahertz transmission image of the consistent sample 10 of pixel arrangement；
(5) image calculates processing and builds storehouse
Each passband black matrix reflected image of sample 10 is subtracted each passband standards corresponding to it by embedded master controller 1 respectively
Black reflected image, then divided by its corresponding to each passband standards white reflection image, so as to obtain each passband standards of sample 10 reflection
Rate image (i.e. super continuous spectrums standard reflectivity image)；Embedded master controller 1 by the Terahertz transmission image of sample 10 divided by
Its Terahertz full impregnated image, obtain Terahertz standard transmitance image；By the super continuous spectrums standard of the rare animals and plants sample 10
The information fusion such as albedo image, Terahertz standard transmitance image and its kind, the place of production, tissue, build its biological structure,
The physical property resource databases such as texture, aqueous distribution, and the database information of the sample 10 is passed through into wireless lan transceiver 26
Network delivers to entry and exit department cloud system；After completing substantial amounts of rare animals and plants sample database structure based on the instrument, use
The instrument detects to unknown sample, after obtaining its super continuous spectrums standard reflectivity image and Terahertz standard transmitance image, with
Rare animals and plants sample database is retrieved, contrasted, identified, you can carry out the place of production trace to the source, Species estimation etc., so as to effectively enter
Row important living resources are protected, and safeguard national bio-safety.
Claims (1)
1. a kind of integrated spectral imager suitable for living resources detection, the instrument is by embedded master controller (1), Terahertz
Scanning imagery subsystem (2), multispectral imaging subsystem (23), sample room (8) and wireless lan transceiver (26) composition；Its
It is characterised by：
Described Terahertz scanning imagery subsystem (2) is by emitting head (5), reception head (13), bidimensional electric platforms (30) and sweeps
Retouch and formed with switch controller (3)；Emitting head (5) includes THz source (4) and terahertz sources lens (7)；Receive head (13)
Including Terahertz receiving lens (33) and Terahertz sensor (29)；Emitting head (5) is with receiving head (13) with Terahertz optical axis (6)
Install, and be fixed on bidimensional electric platforms (30) for axis coaxle；Bidimensional electric platforms (30) are in scanning and switch controller
(3) two dimensional surface scanning can be done under control；
Described multispectral imaging subsystem (23) is by optical filter wheel (14), optical filter wheel controller (15), bandpass filter
(16), super continuous spectrums laser (18), fibre-coupled mirrors (19), one point of multi fiber (20), light uniforming device (21), multispectral camera
(22), multispectral imaging camera lens (24) forms with semi-transparent semi-reflecting lens (25)；Multi-disc bandpass filter is housed on optical filter wheel (14)
(16) laser beam axis (17) can, be cut successively under the control of optical filter wheel controller (15)；
There are specimen holder (9), standard blackboard (31), standard white plate (11) and switch (32), sample in described sample room (8)
(10) after putting into specimen holder (9), the corresponding notch of insertion sample room (8)；Switch (32) control switching standards blackboard (31) or mark
Substrate of the quasi- blank (11) as sample room；
Described super continuous spectrums laser (18) sends the super continuous spectrums laser of the visible infrared spectral coverage into, along laser beam axis (17)
Transmission, after fibre-coupled mirrors (19) and a certain bandpass filter (16), export as the laser of a certain passband, be coupled into more than one point
Optical fiber (20), carries out one to multiple beam splitting；It is flat that the uniform placement of the multi output optical fiber of one point of multi fiber (20) is distributed in light uniforming device (21)
On face；Light uniforming device (21) plane is diffusing transmission plane, can make to obtain even light effect through light beam；Passband laser beam warp after even light
Semi-transparent semi-reflecting lens (25) reflection rear steering primary optical axis (12), Uniform Illumination is on the sample (10) of sample room (8), its reflected light edge
Primary optical axis (12) reverse transfer, through semi-transparent semi-reflecting lens (25), multispectral camera is imaged onto through multispectral imaging camera lens (24)
(22) on；Laser beam axis (17) and primary optical axis (12) are coplanar, and laser beam axis (17) is perpendicular to primary optical axis (12)；
Described THz source (4) can send the electromagnetic wave of terahertz wave band, along Terahertz optical axis (6) through terahertz sources lens
(7) can converge in the target of certain distance；Scanning is with switch controller (3) except bidimensional electric platforms (30) can be controlled to do
Two dimensional surface scanning is outer, also can control it to drive emitting head (5), receive spatial dimension of head (13) incision with cutting out sample room,
It is workspace (27) during incision, is now working condition；It is nonclient area (28) when cutting out, is now off working state；In work
When making state, terahertz sources lens (7) converge at the THz wave transmitted along Terahertz optical axis (6) on sample (10)
Certain point；Bidimensional electric platforms (30) do two dimensional surface scanning, can be achieved to sample (10) plane THz wave a little
Focus on；The THz wave transmitted from sample (10) THz wave focus point continues to transmit along Terahertz optical axis (6), passes through terahertz
Hereby receiving lens (33), converge at Terahertz sensor (29) and received；Primary optical axis (12) and both Terahertz optical axises (6) are coplanar
It is parallel；
Host software in described embedded master controller (1) can realize the man-machine interaction of instrument, database sharing, inquiry,
Remote transmission, the fusion of image information, analysis, taxonomic history；Its input/output port control program can be realized to wireless local
Net transceiver (26), switch (32), optical filter wheel controller (15), THz source (4), scanning and switch controller (3), surpass
The control of continuous spectrum laser (18), multispectral camera (22) and Terahertz sensor (29), and receive multispectral camera (22)
Output image and Terahertz sensor (29) output on single point signal, and pass through wireless lan transceiver (26) network connection and connect
Entry and exit department cloud system, realize upload, download and the high in the clouds inquiry of database.
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| CN108596216A (en) * | 2018-04-04 | 2018-09-28 | 格薪源生物质燃料有限公司 | Biomass fuel quality determining method and system |
| CN110672550A (en) * | 2019-09-10 | 2020-01-10 | 中国科学院上海技术物理研究所 | Image spectrum analyzer for important biological resources in micro-area |
| CN112964665A (en) * | 2021-02-04 | 2021-06-15 | 中国科学院重庆绿色智能技术研究院 | Tumor marker molecule detection system based on high-resolution terahertz technology |
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