CN105842748A - Vehicle-mounted Raman remote detecting device for hazardous articles - Google Patents
Vehicle-mounted Raman remote detecting device for hazardous articles Download PDFInfo
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- CN105842748A CN105842748A CN201610392990.7A CN201610392990A CN105842748A CN 105842748 A CN105842748 A CN 105842748A CN 201610392990 A CN201610392990 A CN 201610392990A CN 105842748 A CN105842748 A CN 105842748A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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Abstract
The invention provides a vehicle-mounted Raman remote detecting device for hazardous articles. The device comprises a plurality of laser excitation transmission parts and at least one Raman signal forming part, so that a plurality of detection spot laser dot matrixes can be formed on a remote road, and therefore, large-range scanning can be carried out, so that Raman signals can be formed; Beam expansion convex mirrors can be moved, so that distances between laser excitation positions and laser transmission units can be changed, and therefore, the hazardous articles on the road can be detected remotely; a control processing part receives optical path distances from lasers to formed Raman signals, the speed signals of a vehicle and the pulse electric signals of the lasers, and controls time for detecting the Raman signals according to fed-back pulse electric signals and speed signals and based on transmission speed and the optical path distances, and therefore, the sensitivity of detection can be enhanced, and whether a certain article is a hazardous article of signal can be judged fast, and the location of the hazardous article can be determined.
Description
Technical field
The present invention relates to a kind of dangerous materials vehicle-mounted Raman long-distance detection device, belong to laser detection
Field.
Background technology
After within 2015, Paris attack case occurs, city and road safety issues are gradually by various countries
Mention agenda.And utilize and be hidden in the dangerous materials such as the Toxic on road surface, inflammable, explosive substance,
Attack vehicular traffic, block transportation, be lawless person's conventional means of endangering urban safety,
Often result in serious casualties.Therefore, use new science and technology, develop a kind of noncontact, remote
Distance, on a large scale, quick detection to lock the probe vehicles of dangerous materials the most necessary, city is pacified
Guarantor's construction has important practical significance.
Raman detection is that the most the most frequently used unknown material composition demarcates means.It is by shining
Penetrate beam of laser to detection thing on, then detect the Raman spectrum of scattered light, utilize molecular structure
Spectral line demarcates unknown material composition.The peculiar advantages such as lossless, accurate, high sensitivity are possessed because of it,
Raman detection technology is widely used in fields such as hazardous material detections in recent years.The most ripe
Raman detection means, be generally used for detection range unknown material within 50 centimetres and become minute mark
On Ding.
Existing Raman standoff detection system, is what detector was fixed relative to position with detectable substance
Point-to-point detection (fixed point detection), detection time is in 2 to 10 minutes.But will be by this
Raman fixed point detecting system, is mounted on the vehicle-mounted chassis in moving, as vehicle-mounted detection device,
While vehicle is advanced with certain speed, implement medium and long distance detection, then there is several big problem:
1) vehicle-mounted dangerous materials detection system generally vehicle advance in detect, speed be generally greater than 5 meters/
Second, while this just requires that the detection range of vehicle-mounted detection system is enough remote, detection system is with right
The time of fire alarming of dangerous materials must be sufficiently fast, thus ensures to detect that dangerous materials are to responding in system
After showing instruction, between systemic vectors and dangerous materials, also retain certain safe distance.And tradition is fixed
Point detection means, therefore cannot be in effective time due to the detection time needing 2 to 10 minutes
Interior warning；2) conventional solid Raman detection uses single-point detection means, investigative range several centimeters
Left and right.Therefore tradition Raman detection technology, it is impossible to meet ground, front is detected on a large scale want
Ask；3) travel speed of vehicle is often a variable, and tradition Raman detection system is interior
It is in advance given for putting the time of integration, it is impossible to realize returning signal obtained by feedback the most in the same time
One change processes.Comprehensive above some, tradition Raman detection system, due to fixed point detection and single
Dependence in terms of some measurement, so playing a role in actual mounted remote scanning system is also pole
Limited.
Summary of the invention
The present invention proposes for solving the problems referred to above, it is therefore intended that by multiple laser array
Become laser dot-matrix and and controlled by time feedbacking, it is provided that one can be visited on a large scale and simultaneously and rapidly
The dangerous materials vehicle-mounted Raman long-distance detection device surveyed, present invention employs techniques below scheme:
A kind of dangerous materials vehicle-mounted Raman long-distance detection device, in vehicle travel process, is used for
Detect the object on remote road surface, it is judged that whether it is dangerous materials, and provides the road of dangerous materials
Position, face, it is characterised in that including: at least two laser excitation communication portion, is used for producing many
Arrange parallel laser and laser propagated to remote road surface and forms parallel detection hot spot,
Laser excitation communication portion includes laser instrument and laser propagation unit；At least one raman spectral signal
Forming portion, raman spectral signal forming portion includes that acceptance collects unit, beam shaping converges unit
And Raman spectrum unit, receive and collect unit for accepting laser propagation to producing behind road surface
Scattered light also accumulates light beam, has a reception concave mirror, beam shaping converge unit for from
Reception collects the scattered light of unit and carries out shaping convergence and be propagated further, Raman spectrum unit
It is separated into suitable detection for the scattered light converging cell propagation from beam shaping being filtered
After Raman diffused light, detection obtains raman spectral signal；And control process portion, draw for reception
Graceful spectral signal also judges raman spectral signal according to the result with data with existing contrast, and this draws
Whether graceful spectral signal is from dangerous materials, and wherein, laser propagation unit includes for accepting laser
The expanding convex mirror and receive through expanding convex mirror of laser that device excites further diffusive transport
Laser that diffusive transport comes the gathering convex lens assembled a long way off by laser, focus on convex lens
Removable, by focusing on moving horizontally of convex lens, it is used for changing laser excitation position and laser
The spacing of propagation unit, beam shaping converges unit and includes adjusting the first of light beam locus
Plane mirror and acceptance are received after concave mirror propagates the scattered light that comes and scattered light dissipated
The reception convex mirror being propagated further, Raman forming portion also includes light path steering unit, is used for changing
Become and receive the direction of propagation of the scattered light that convex mirror propagation comes with just to Raman spectrum unit
Detection direction, including multiple plane mirrors, control process portion, also by receiving light path propagate away from
The laser pulse signal of telecommunication that sends from information, laser instrument, the travel speed signal of vehicle, go forward side by side
After row processes, realize judging rapidly thing for controlling to start the time of detection Raman diffused light
Whether body is dangerous materials, confirms its position simultaneously.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, light path steering unit includes the first plane mirror and the second plane mirror, and second is flat
Face mirror receives convex mirror and propagates the scattered light come and be propagated further to the 3rd plane mirror, and the 3rd
Plane mirror is arranged at the top of the second plane mirror, for changing the scattered light that the second plane mirror is propagated
Direction.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, laser propagation unit also includes high reflective mirror, be arranged on laser instrument with expand recessed
Between the propagation light path of face mirror, facilitate the regulation of paths.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, the surface expand convex mirror, focusing on convex lens and high reflective mirror has surface
Plated film, the output wavelength of the laser that the material of surface coating and laser instrument excite matches.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, beam shaping converges unit and also includes least one set face mirror group, is arranged on the
One plane mirror and reception convex mirror are propagated between light path, for further spot shaping, face mirror group
Including the middle concave mirror arranged according to paths direction, fourth plane mirror.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, the first plane mirror is horizontally moveable, in order to adjust Raman light in detection system
In dispersion angle.The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, also may be used
To have a feature in that wherein, wherein, laser instrument uses solid state laser, thin-disc laser
Any one in the laser instrument such as device and optical fiber laser.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, laser instrument uses output wavelength at the laser instrument of ultraviolet light wave band.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, receive concave mirror, use plano-concave cylindrical mirror.
The dangerous materials vehicle-mounted Raman long-distance detection device that the present invention provides, it is also possible to have so
Feature: wherein, Raman forming portion use ICCD detector detection Raman diffused light.
Invention effect and effect
The dangerous materials vehicle-mounted Raman long-distance detection device provided according to the present invention is many owing to including
Individual laser excitation communication portion and at least one raman spectral signal forming portion, can be at a distance
Road surface forms multiple detection light spot laser dot matrix, thus can scan the most on a large scale
And form raman spectral signal；Removable, by being moved horizontally owing to focusing on convex lens again
Can change its distance relatively expanding convex mirror, this distance slightly changes, it is possible to farther out
The formation detection hot spot on road surface so that the dangerous materials on long-range detection road surface；
Laser instrument is received to forming the optical path distance of raman spectral signal, vehicle again due to control process portion
Rate signal and the pulse electrical signal of laser instrument, according to feedback pulse electrical signal and speed
Signal, and combine spread speed and optical path distance, control the time of detection raman spectral signal,
So enhancing the sensitivity of detection, can realize whether judgment object rapidly is dangerous materials, and
Confirm its position simultaneously.
Accompanying drawing explanation
Fig. 1 is the work of the dangerous materials vehicle-mounted Raman long-distance detection device of the embodiment of the present invention
Principle schematic；
Fig. 2 is that the dangerous materials vehicle-mounted Raman long-distance detection device of the embodiment of the present invention is at vehicle
Work schematic diagram in traveling.
Fig. 3 is structure and the operating diagram of the laser excitation communication portion of the embodiment of the present invention；
Fig. 4 is structure and the work signal of the raman spectral signal forming portion of the embodiment of the present invention
Figure.
Detailed description of the invention
Embodiment
The detailed description of the invention of embodiments of the invention is described below in conjunction with accompanying drawing.
Fig. 1 is the entirety of the dangerous materials vehicle-mounted Raman long-distance detection device of the embodiment of the present invention
Operation principle schematic diagram.
Fig. 2 is that the dangerous materials vehicle-mounted Raman long-distance detection device of the embodiment of the present invention is at vehicle
Work schematic diagram in traveling.
As shown in Figure 1 and Figure 2, dangerous materials vehicle-mounted Raman long-distance detection device 10 is arranged on
In vehicle 200, including at least two laser excitation communication portion 11, at least one Raman spectrum
Signal forming portion 12 and data processing division 13.Due to single raman spectral signal forming portion 12
Detectable area area, the most single laser excitation communication portion 11 is actual excites propagation
Focus on the region area that obtains, thus generally raman spectral signal forming portion 12
Number is less than or equal to laser excitation communication portion 11.In the present embodiment, laser excitation communication portion is
Six, raman spectral signal forming portion is three.
Fig. 3 is structure and the operating diagram of the laser excitation communication portion of the embodiment of the present invention.
As it is shown on figure 3, totally six laser excitation communication portions 11, figure shows the most completely,
Centre ellipsis represents the several laser excitation communication portions 11 not demonstrated.Each laser
Communication portion 11 is excited to include laser instrument 14 and laser propagation unit 15.
Laser instrument 14 is used for excitation laser, uses the laser instrument exciting ultraviolet band, Ke Yiyong
Solid state laser, thin-sheet laser, optical fiber laser any one, in the present embodiment use
Optical fiber laser excites the laser of ultraviolet band.
Laser propagation unit 15 is used for propagating the laser that laser instrument 14 excites earthward.Including
In " Z " font order arrange high reflective mirror 16, expand convex mirror 17 and focus on convex lens
18。
High reflective mirror 16 is used for making the light path of laser propagation be easy to be conditioned.
Expand after the laser that high reflective mirror 16 is propagated is expanded by convex mirror 17 and be propagated further.
Focus on convex lens 18 reception and expand the laser that convex mirror 17 propagation comes, and at vehicle 200
Road surface at a distance is focused, and this laser is scattered by the object on road surface at focusing, shape
Become scattered light.Focus on convex lens 18 to be arranged in the first electric control platform (not shown),
Move by controlling electric control platform, can control to focus on the horizontal level of convex lens 18.
High reflective mirror 16, expand convex mirror 17 and focus on convex lens 18 surface configuration have table
Face plated film, the ripple selecting the Output of laser according to laser instrument 15 of the surface coating of each of which
Long selection.
Many set laser excitation communication portions 11 are arranged side by side.
Fig. 4 is structure and the work signal of the raman spectral signal forming portion of the embodiment of the present invention
Figure.
As shown in Figure 4, each raman spectral signal forming portion 12 include reception collect unit 19,
Beam shaping converges unit 20, light path steering unit 21 and Raman spectrum unit 22.
Reception collects unit 19 and collects ground laser excitation communication portion 11 excite propagation for receiving
After the object of road surface, it is scattered the scattered light of generation and is propagated further.Use and receive concave mirror
19。
Beam shaping converges unit 20 and includes the first plane mirror 23, middle concave mirror the 24, the 4th
Plane mirror 25 and reception convex mirror 26.Converge for beam shaping.
First plane mirror 23 is placed in the second electronic control translation stage (not shown), with side
Just the locus that regulation Raman diffused light focuses on, it is simple to the probe unit 21 that is split detects.
Middle concave mirror 24,25 two elements of fourth plane mirror are referred to as one group, and being used for will be from recessed
The scattered light that face mirror 22 propagation comes carries out follow-up the resuming of spot shaping and broadcasts, and they can include one
More than group, the present embodiment is one group.
Receive convex mirror 26 and propagate next scattered light for receiving fourth plane mirror 25 and carry out whole
Shape, and be propagated further after this scattered light is dissipated.Receive convex mirror 26 and use plano-convex
Cylindrical mirror.
Light path steering unit 21 includes the second plane mirror 27 and the 3rd plane mirror 28.
Second plane mirror 27 receive receive convex mirror 26 propagate come scattered light be propagated further to
3rd plane mirror 28, the 3rd plane mirror 28 is arranged at the vertical direction of the second plane mirror 27
Upper end, is turned to the direction of propagation of scattered light as horizontal transmission again after perpendicular to the ground by parallel ground.
Raman spectrum unit 22 is perpendicular to ground, including narrow band filter slice 29, slit 30, divides
Light device 31 and detector 32.
Narrow band filter slice 29 was for being filtered the scattered light that the 3rd plane mirror 28 is propagated
Filter, removes other scattered stray lights, obtains Raman diffused light and be propagated further, and slit 30 is used for
Applicable Raman diffused light is allowed to pass through, the Raman diffused light that beam splitter 31 will pass through from slit 30
Carrying out light splitting becomes the light beam of different wave length to be propagated further, detector 32 detect light splitting after draw
Graceful scattered light obtains Raman spectrum, and Raman spectrum is converted into raman spectral signal and is propagated further.
Detector 32 uses ICCD, is furnished with ultraviolet and strengthens function.
Control process portion 13 and Raman spectrum unit 21 connect, and receive raman spectral signal, root
Judge that whether it is the raman spectral signal of dangerous materials according to data with existing contrast；
Control process portion 13 and car speed induction apparatus 33 connect, and receive the speed letter that feedback is come
Number；Also connect with laser instrument 14, receive the pulse telecommunications that the feedback of laser launched by laser instrument 14
Number；
Control process portion 13 connects with each laser excitation communication portion 11 respectively, receives laser
It is multicast to road surface and focuses on the first distance signal forming detection hot spot；
Control portion 13 connects with each raman spectral signal forming portion 12 respectively, receives detection light
Speckle forms the scattered light second distance signal until detector 32；
Control portion 13 is according to the pulse electrical signal fed back and rate signal, and combines laser and dissipate
Penetrate spread speed and the first distance signal, the second distance signal of light, control detector 32
The time of detection raman spectral signal, it is achieved whether judgment object is dangerous materials rapidly, and with
Time confirm its position；
Work process:
Being 8.2 meter per seconds with the travel speed of vehicle 200, road surface 300 is wide 5 meters, road surface object
As a example by the size of 400 is 0.5 meter × 0.5 meter, illustrate.
1, paths and formation raman spectral signal process:
Laser is launched, by controlling the by the laser instrument 14 singly overlapping laser excitation communication portion 11
One electric control platform, controls to focus on convex lens 18 and relatively expands the horizontal level of convex mirror 17, enter
And adjust the laser position focusing on formation detection hot spot in vehicle 200 distant place, in the present embodiment,
Before vehicle 200,0.5cm*80cm strip hot spot on the road surface 300 of distant place, is formed after adjustment.
Six set laser excitation communication portions 11 are arranged side by side, form the 80cm that six roads are transversely arranged on road surface
Long detection hot spot, forms laser ultraviolet dot matrix, covers 5 meters of wide road surfaces, and vehicle 200 is expert at
Sail cathetus and advance beam spot scans road surface.5 meters can be scanned in 1 second in vehicle 200 is advanced
The road surface scope of × 5 meters, so, the thing on synchronization, whole road surface 300 and road surface
Body 400 is all in sweep limits and can be synchronously scanned, in a scan, and road surface 300 or road
Object 400 on face will scatter the scattered light that this hot spot is formed.
Received when the Raman light scattered from road surface 300 or object 400 receives concave mirror 19
After integrated optical source, Raman light carries out shaping and convergence through beam shaping convergence unit 20 afterwards
Propagate.The light beam focused on is beaten in the light path being made up of the second plane mirror 27 and the 3rd plane mirror 28
On steering unit 21, spatially the propagation of scattered light is turned 90 ° so that by the first plane
Mirror 27 surface is parallel to the Raman light hot spot on ground, transfers hanging down from the 3rd plane mirror 28 outgoing to
Straight in the bar shaped laser spot on ground, then filter impurity through narrow band filter slice 29 and obtain Raman scattering
Light, Raman diffused light passes through from slit 30, after be divided into different-waveband through beam splitter 31, then
Detected by ICCD detector 32, form raman spectral signal.During this, by controlling the
Two electric control platform, can adjust the position of the first plane mirror 23, and then regulation Raman light focuses on
Locus so that it is preferably detected by ICCD detector 32.
2, control process portion 13 judges dangerous materials process:
Judge dangerous materials process: control process portion 13 receives the Raman spectrum that said process is formed
Signal, by raman spectral signal and the Raman spectral information of the various dangerous materials of storage in data base
Data Comparison, when the Raman light of certain dangerous materials in the raman spectral signal received with data base
When spectrum information data are coincide, then judge that it is certain dangerous materials；
3. control process portion 13 control ICCD detector 32 detection start process:
First, during laser instrument 14 sends laser, owing to control process portion 13 is with every
Individual laser instrument 14 connects, when laser instrument 14 often sends a laser, and control process portion 13
All will receive pulse electrical signal, thus know laser instrument 14 to send every time to send laser time
Carve T1；Meanwhile, control process portion 13 also receives the speed sensor of connected vehicle
The rate signal that 33 feedbacks are come, thus know travel speed V1 of vehicle when sending laser；
Secondly, control process portion 13 records the moment T1 of the laser sent from laser instrument 14；
And after record excites remote road surface object 400, the scattered light propagated dorsad is by detector 32
Detect relative instant T2；In conjunction with signal of telecommunication time delay and detector 32 analysis time
T3, T1-T2-T3 are exactly in vehicle runs, and laser is at vehicle and remote road surface object 400
Between propagation time T back and forth；
Thirdly, owing to speed can be ignored relative to ray velocity, in conjunction with light velocity c, vehicle arrives
Distance S of remote road surface object 400 is cT/2；
Due to the dot matrix synchronizing detection formed for multiple tracks laser in actual detection, therefore work as detector
14 start detection forms Raman signals and is broadcast to after control process portion 13 is judged as dangerous materials, control
Process portion processed is according to corresponding search coverage, it is possible to know that dangerous materials occur in that light path,
In conjunction with knowable dangerous materials distance S, it is possible to the anti-specified place releasing dangerous materials appearance.
The effect of embodiment and effect
The dangerous materials vehicle-mounted Raman long-distance detection device provided according to the present invention is many owing to including
Individual laser excitation communication portion and at least one Raman signal forming portion, can be on remote road surface
Form multiple detection light spot laser dot matrix, thus can scan the most on a large scale and shape
Become Raman signal；Removable, by movement, thus it is possible to vary it is relative owing to focusing on convex lens again
Expanding the distance of convex mirror, this distance slightly adjusts, it is possible in the laser spot on road surface farther out
Position, so that the dangerous materials on long-range detection road surface；Again due to control process portion
Receive laser instrument to forming the optical path distance of Raman signal, the rate signal of vehicle and laser instrument
Pulse electrical signal, according to pulse electrical signal and the rate signal of feedback, and combine spread speed
And optical path distance, control the time of detection Raman signal, so enhancing the sensitivity of detection,
Whether can realize judgment object rapidly is dangerous materials, and confirm its position simultaneously；
Unaffected due to ultraviolet band detection in the sun preferably again, further increase
Detectivity, so that the time obtaining Raman signal shortens further, therefore can will be
Bulk cargo fits on the vehicle of traveling, and on vehicle on detection far-end road surface.
Although above the detailed description of the invention of description of the invention being described, in order to this
Those skilled in the art understand the present invention, it should be apparent that the invention is not restricted to concrete reality
Execute the scope of mode, from the point of view of those skilled in the art, as long as various change exists
Appended claim limits and in the spirit and scope of the present invention that determine, these changes are aobvious
And be clear to, all utilize the innovation and creation of present inventive concept all at the row of protection.
Claims (10)
1. a dangerous materials vehicle-mounted Raman long-distance detection device, in vehicle travel process, uses
In the object detected on remote road surface, it is judged that whether it is dangerous materials, and provides described danger
The position, road surface of product, it is characterised in that including:
At least two laser excitation communication portion, for producing multiple rows of parallel laser and swashing described
Light is propagated to described remote road surface and is formed parallel detection hot spot, and described laser excitation passes
The portion of broadcasting includes laser instrument and laser propagation unit；
At least one raman spectral signal forming portion, described raman spectral signal forming portion includes connecing
Collected unit, beam shaping converges unit and Raman spectrum unit,
Described reception collects unit for accepting described laser propagation to producing behind described road surface
Scattered light also accumulates light beam, has reception concave mirror,
Described beam shaping converges unit and enters for the scattered light collecting unit from described reception
Row shaping is also converged and is propagated further,
Described Raman spectrum unit is for the institute by converging cell propagation from described beam shaping
State detection after scattered light filters the Raman diffused light being separated into suitable detection and obtain Raman spectrum letter
Number；And
Control process portion, is used for receiving described raman spectral signal basis and data with existing pair
The result of ratio judge this raman spectral signal of raman spectral signal whether from dangerous materials,
Wherein, described laser propagation unit includes for accepting laser that described laser instrument excites also
Expanding of diffusive transport expands convex mirror diffusive transport mistake described in convex mirror and reception warp further
The described laser come the gathering convex lens that described laser is assembled a long way off,
Described focusing convex lens may move, and by moving horizontally of described focusing convex lens, is used for
Change the spacing of laser excitation position and laser propagation unit,
Described beam shaping converge unit include adjust light beam locus the first plane mirror with
And accept propagate, through described reception concave mirror, the described scattered light come and described scattered light sent out
The reception convex mirror being propagated further after Saning,
Described Raman forming portion also includes light path steering unit, is used for changing reception convex mirror and passes
The direction of propagation of the described scattered light broadcast is with just detection side to described Raman spectrum unit
To, including multiple plane mirrors,
Described control process portion, also by range information, the described laser instrument of receiving light path propagation
The laser pulse signal of telecommunication that sends, the travel speed signal of described vehicle, and after processing,
Realize judging described thing rapidly for controlling to start the time of the described Raman diffused light of detection
Whether body is described dangerous materials, confirms its position simultaneously.
2. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, its feature
It is:
Light path steering unit includes the first plane mirror and the second plane mirror,
The described scattered light that described second plane mirror receives the propagation of described reception convex mirror enters one
Step is broadcast to described 3rd plane mirror,
Described 3rd plane mirror is arranged at the top of described second plane mirror, is used for changing described
The direction of the described scattered light that two plane mirrors are propagated.
3. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, it is special
Levy and be:
Wherein, described laser propagation unit also includes high reflective mirror, is arranged on described laser instrument and institute
State and expand between the propagation light path of concave mirror, facilitate the regulation of paths.
4. the dangerous materials vehicle-mounted Raman long-distance detection device as described in claim 1 or 3, its
It is characterised by:
Wherein, the surface expanding convex mirror, focusing convex lens and described high reflective mirror described in has
Surface coating, the output of the described laser that the material of described surface coating and described laser instrument excite
Wavelength matches.
5. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, its feature
It is:
Wherein, described beam shaping converges unit and also includes least one set face mirror group, is arranged on institute
State the first plane mirror and receive between convex mirror propagation light path, for further spot shaping,
Described mirror group includes the middle concave mirror according to the setting of paths direction, fourth plane
Mirror.
6. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 5, it is special
Levy and be:
Wherein, described first plane mirror is horizontally moveable, in order to adjust Raman light in detection system
In dispersion angle.
7. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, its feature
It is:
Wherein, described laser instrument uses solid state laser, thin-sheet laser and optical fiber laser
Deng any one in laser instrument.
8. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, its feature
It is:
Wherein, described laser instrument uses output wavelength at the laser instrument of ultraviolet light wave band.
9. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, its feature
It is:
Wherein, described reception concave mirror, use plano-concave cylindrical mirror.
10. dangerous materials vehicle-mounted Raman long-distance detection device as claimed in claim 1, it is special
Levy and be:
Wherein, the ICCD detector that described Raman forming portion uses detects described Raman diffused light.
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| CN201610392990.7A CN105842748B (en) | 2016-06-06 | 2016-06-06 | A kind of vehicle-mounted Raman long-distance detection device of dangerous material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326626A (en) * | 2020-11-06 | 2021-02-05 | 公安部第三研究所 | Vehicle-mounted scanning type detection device for laser Raman spectrum analysis of pavement substances |
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| WO2009105009A1 (en) * | 2008-02-19 | 2009-08-27 | Portendo Ab | Stand-off detection of hazardous substances such as explosives and components of explosives |
| CN103743719A (en) * | 2013-12-11 | 2014-04-23 | 中国科学院西安光学精密机械研究所 | Remote in-situ integrated test system for planet surface substances and atmosphere |
| CN104458697A (en) * | 2014-12-08 | 2015-03-25 | 成都鼎智汇科技有限公司 | Portable raman spectrum explosive identifier |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080100835A1 (en) * | 2006-10-24 | 2008-05-01 | Pd-Ld, Inc. | Compact, Low Cost Raman Monitor For Single Substances |
| WO2009105009A1 (en) * | 2008-02-19 | 2009-08-27 | Portendo Ab | Stand-off detection of hazardous substances such as explosives and components of explosives |
| CN103743719A (en) * | 2013-12-11 | 2014-04-23 | 中国科学院西安光学精密机械研究所 | Remote in-situ integrated test system for planet surface substances and atmosphere |
| CN104458697A (en) * | 2014-12-08 | 2015-03-25 | 成都鼎智汇科技有限公司 | Portable raman spectrum explosive identifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326626A (en) * | 2020-11-06 | 2021-02-05 | 公安部第三研究所 | Vehicle-mounted scanning type detection device for laser Raman spectrum analysis of pavement substances |
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