CN105891075A - Multi-point coordinated laser module and gas detection system - Google Patents
Multi-point coordinated laser module and gas detection system Download PDFInfo
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- CN105891075A CN105891075A CN201610223803.2A CN201610223803A CN105891075A CN 105891075 A CN105891075 A CN 105891075A CN 201610223803 A CN201610223803 A CN 201610223803A CN 105891075 A CN105891075 A CN 105891075A
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- 238000001514 detection method Methods 0.000 title claims abstract description 199
- 238000012360 testing method Methods 0.000 claims description 33
- 238000012545 processing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 15
- 239000004606 Fillers/Extenders Substances 0.000 claims description 7
- 238000000149 argon plasma sintering Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 6
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004313 glare Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G01N15/075—
Abstract
The invention discloses a coordinated multi-point laser module and a gas detection system. The multi-point coordinated laser module comprises a packaging housing, a main detection laser, an collimating and beam expanding system, a Fourier lens, an auxiliary laser group and a control device, can send main detection laser light in a normal incidence manner to a gas sample chamber and can send at least four auxiliary detection laser light in an oblique incidence manner to the gas sample chamber; when a to-be-detected sample is under detection, to-be-detected sample information carried by the main detection laser light emitted out of the gas sample chamber can be made up by to-be-detected sample information carried by the at least four auxiliary detection laser light emitted out of the gas sample chamber, the detection comprehensiveness for the to-be-detected sample information is guaranteed, so that the lower limit of particle size detection is expanded effectively, and the detection precision of the whole gas detection system and the reliability of detection data are improved.
Description
Technical field
The application relates to gas detection technology field, more particularly, it relates to a kind of multi-point cooperative mode of laser
Group and gas detecting system.
Background technology
In the last few years, along with day by day increasing the weight of of air pollution degree, haze becomes the numerous city of puzzlement China
One of polluter.Haze is the general statement exceeding standard suspended particulate substance Han Ling various in air how
Suspended particulate substance in detection air is the precondition administering haze weather.
The detection method of the air suspended particulated concentration of main flow is light scattering method now, and its theoretical basis is
Mie scattering, i.e. incident illumination run into the suspended particulate substance in air to be measured and can scatter, by described suspension
The light distribution of the scattered light of particulate matter scattering comprises the size of suspended particulate substance, particle size distribution concentration
Etc. information.The intensity signal being obtained described scattered light by certain way can be finally inversed by described particle
The relevant information of thing.Detecting system based on light scattering method only need to be by air sampling to be measured during detection
In gas sample chamber, sent in detection light entrance gas sample chamber by light source and measure.
But during measuring the some scattered light of described detection light in outgoing from gas sample chamber time can send out
Send total reflection phenomenon, and then the detection device that cannot be arranged on described gas sample chamber exit facet side is visited
Measure, and the scattered light that these are totally reflected contains substantial amounts of suspended particulate substance information, these information
Loss can reduce accuracy of detection and the detection data reliability of whole detecting system.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of multi-point cooperative laser module and gas detecting
System, to solve the some scattered light outgoing from gas sample chamber owing to detecting light during detection
Time be totally reflected and the asking of the reduction of the accuracy of detection of whole detecting system that causes and detection data reliability
Topic.
For solving above-mentioned technical problem, embodiments provide following technical scheme:
A kind of multi-point cooperative laser module, is applied to gas detecting system based on light scattering method, described inspection
Examining system includes gas sample chamber；Described multi-point cooperative laser module includes:
Package casing, described package casing includes exit facet；
It is arranged at the main detection laser within described package casing, is used for sending main detection laser；
It is arranged at the collimating and beam expanding system between described main detection laser and described exit facet, for institute
State main detection laser and carry out collimator and extender process；
It is arranged at the fourier lense in described exit facet, for the main inspection after collimator and extender processes
Surveying after laser carries out reverse Fourier transformation and obtain main detection laser, described main detection laser is with normal incidence
Mode enters described gas sample chamber；
The laser-assisted group being arranged in described exit facet, described laser-assisted group includes at least four
Auxiliary detection laser, described at least four auxiliary detection laser is arranged at described fourier lense surrounding,
For sending at least four bundle auxiliary detection laser in oblique incidence mode to described gas sample chamber；
It is arranged in described package casing, the control being connected with described main detection laser and laser-assisted group
Device processed, is used for driving described main detection laser to send main detection laser and for driving described auxiliary to swash
Light device sends at least four bundle auxiliary detection laser.
Preferably, described control device is additionally operable to obtain described main detection laser and laser-assisted group
Temperature, and stablized in preset temperature range.
Preferably, described control device includes: temperature sensor, processing means, refrigerator and driving electricity
Road；Wherein,
Described drive circuit is used for driving described main detection laser send main detection laser and drive described auxiliary
Help laser array send at least four bundle auxiliary detection laser, and keep described main detection laser and described at least
Four bundle auxiliary detect the Wavelength stabilized of laser；
Described temperature sensor is for obtaining the temperature letter of described main detection laser and laser-assisted group
Breath；
Described processing means is used for obtaining described temperature information, and controls described system according to described temperature information
The duty of cooler.
Preferably, described processing means is single-chip microcomputer or microprocessor.
Preferably, described collimating and beam expanding system includes:
It is arranged at the beam expanding lens between described main detection laser and described exit facet；
It is arranged at the described beam expanding lens pin hole away from described main detection laser side；
It is arranged at the described pin hole collimating mirror away from described beam expanding lens side；
It is arranged at the described collimating mirror diaphragm away from described pin hole side.
Preferably, described laser-assisted group includes four auxiliary detection laser, described four auxiliary inspections
Survey laser instrument and be uniformly distributed in described fourier lense surrounding.
Preferably, described auxiliary detection laser is blue laser or red laser or green (light) laser.
Preferably, described main detection laser is red laser.
A kind of gas detecting system, is used for detecting gas to be measured, and described system includes: at least one is as above
State multi-point cooperative laser module, gas sample chamber, detection device and the processing system described in any embodiment；
Wherein,
Described gas sample chamber is used for storing testing sample；
Described multi-point cooperative laser module is for sending main detection laser and at least four to described gas sample chamber
Bundle auxiliary detection laser, described main detection laser enters described gas sample chamber in normal incidence mode, described
At least four bundle auxiliary detection laser are with the incident described gas sample chamber of different angles；
Described detection device carries testing sample information for detection by described gas sample chamber outgoing
Main detection laser and at least four bundle auxiliary detection laser, and be transferred to described processing system；
Described processing system is for carrying the main detection laser and at least four of testing sample information described in basis
Bundle auxiliary detection laser obtains the testing sample information of testing sample in described gas sample chamber.
Preferably, described detection device includes key light electric explorer and auxiliary detector；Wherein,
Described key light electric explorer carries testing sample for detection by described gas sample chamber outgoing
The main detection laser of information；
Described auxiliary detector is believed by the testing sample that carries of described gas sample chamber outgoing for detection
At least four auxiliary detection laser of breath.
From technique scheme it can be seen that embodiments provide a kind of multi-point cooperative laser module
And gas detecting system；Wherein, described multi-point cooperative laser module can be with the form of normal incidence to described
Gas sample chamber sends main detection laser, can send to described gas sample chamber in oblique incidence mode simultaneously
Article at least four, auxiliary detection laser；Owing to the incident direction of described at least four bundle auxiliary detection laser is with described
The incident direction of main detection laser all differs, and is totally reflected by gas sample chamber after gas scattering to be measured
Testing sample information entrained by light the most all differs, therefore in the process detecting testing sample
In, the testing sample information carried by the main detection laser of described gas sample chamber outgoing can be passed through
At least four the auxiliary detections of described gas sample chamber outgoing testing sample information institute entrained by laser is more
Mend, it is ensured that comprehensive to gas information detection to be measured, thus effectively expand under droplet measurement
Limit, and then improve accuracy of detection and the reliability of detection data of whole gas detecting system.
And the integrative packaging due to described package casing so that described multi-point cooperative laser module has
Good stability.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
The structural representation of a kind of multi-point cooperative laser module that the embodiment that Fig. 1 is the application provides；
A kind of structural representation controlling device that the embodiment that Fig. 2 is the application provides；
The structural representation of a kind of collimating and beam expanding system that the embodiment that Fig. 3 is the application provides；
The structural representation of a kind of laser-assisted group that the embodiment that Fig. 4 is the application provides；
The structural representation of a kind of gas detecting system that the embodiment that Fig. 5 is the application provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
This application discloses a kind of multi-point cooperative laser module, be applied to gas detecting based on light scattering method
System, described detecting system includes gas sample chamber；As it is shown in figure 1, described multi-point cooperative laser module bag
Include:
Package casing 100, described package casing 100 includes exit facet；
It is arranged at the main detection laser 200 within described package casing 100, is used for sending main detection laser；
It is arranged at the collimating and beam expanding system 300 between described main detection laser 200 and described exit facet, uses
In described main detection laser is carried out collimator and extender process；
The fourier lense 500 being arranged in described exit facet, for the master after collimator and extender processes
Detection laser obtains main detection laser after carrying out reverse Fourier transformation, and described main detection laser is with normal incidence
Mode enter described gas sample chamber；
The laser-assisted group 400 being arranged in described exit facet, described laser-assisted group 400 include to
Few four auxiliary detection laser, it is saturating that described at least four auxiliary detection laser is arranged at described Fourier
Mirror 500 surrounding, swashs for sending at least four bundle auxiliary detections in oblique incidence mode to described gas sample chamber
Light；
It is arranged in described package casing 100, with described main detection laser 200 and laser-assisted group 400
The control device (not shown in accompanying drawing 1) connected, is used for driving described main detection laser 200 to send main
Detect laser and be used for driving described laser-assisted to send at least four bundle auxiliary detection laser.
It should be noted that the main detection used in gas detecting system based on light scattering method in general
Laser instrument 200 generally can launch the red laser of red laser.But other embodiments in the application
In, described main detection laser 200 can also be blue laser or filter laser device.The application is to this also
Do not limit, concrete depending on practical situation.
Detection light path of the prior art only has a branch of single main detection laser.The application is described in reservation
On the basis of main detection laser, add the auxiliary detection laser of at least four bundle oblique incidences.Increase at least four
The purpose of bundle auxiliary detection laser is for the Monitoring lower-cut of enlargement gas detecting system.In the most main detection
Laser in the way of normal incidence in the case of directive gas sample chamber, the main inspection of part scattered by testing sample
The scattered light surveying laser can be totally reflected when from gas sample chamber outgoing, the most only main inspection of part
The scattered light surveying laser can be received, and contains and treat test sample in these scattered lights not being received
Product substantial amounts of submicron particles information.And described at least four restraint the auxiliary detection laser of oblique incidences with oblique incidence
Mode to detecting, so can make up the scattered light of the main detection laser not being received
In the testing sample substantial amounts of submicron particles information that comprises, thus improve the detection of gas detecting system
Lower limit, and then improve accuracy of detection and the reliability of detection data of whole gas detecting system.
Also, it should be noted the fourier lense of the multi-point cooperative laser module of the embodiment of the present application offer
500 is the structure of reverse Fourier transformation, takes this structure can reduce described multi-point cooperative laser module
Equivalent focal length, and then can in the case of not replacing fourier lense 500 effectively expand application described many
The Monitoring lower-cut of the gas detecting system of the collaborative laser module of point, improves the resolving power to fine particle.With
Time the equivalent focal length continuously adjustabe of this optical texture and the maximum acceptance angle of scattered light not by fourier lense
The restriction of 500 bores.
On the basis of above-described embodiment, in an embodiment of the application, described control device is also used
In obtaining described main detection laser 200 and the temperature of laser-assisted group 400, and stablized default
In temperature range.
It should be noted that by described main detection laser 200 and the temperature stabilization of laser-assisted group 400
Purpose in preset temperature range is to provide suitable working environment for the laser chip of laser instrument, it is ensured that
Described main detection laser 200 and the reliability of laser-assisted group 400.
Also, it should be noted described preset temperature range is described main detection laser 200 and auxiliary laser
The temperature range that device group 400 can normally work.In an embodiment of the application, described preset temperature
Scope is 10 DEG C-50 DEG C, including endpoint value.In a preferred embodiment of the application, described default temperature
Degree scope is 20 DEG C-35 DEG C, including endpoint value.This is not limited by the application, specifically regards practical situation
Depending on.
On the basis of above-described embodiment, in another embodiment of the application, as in figure 2 it is shown, described
Control device 600 to include: temperature sensor 610, processing means 620, refrigerator 630 and drive circuit 640；
Wherein,
Described drive circuit 640 is used for driving described main detection laser 200 to send main detection laser and driving
Described laser-assisted group 400 send at least four bundle auxiliary detection laser, and keep described main detection laser and
Described at least four bundle auxiliary detect the Wavelength stabilized of laser；
Described temperature sensor 610 is used for obtaining described main detection laser 200 and laser-assisted group 400
Temperature information；
Described processing means 620 is used for obtaining described temperature information, and controls described according to described temperature information
The duty of refrigerator 630.
It should be noted that described drive circuit 640 is by being input to described main detection laser 200 He
The control driving electric current of laser-assisted group 400, makes described main detection laser and described at least four bundle auxiliary
The Wavelength stabilized scope needed at whole gas detecting system of detection laser.
By described temperature sensor 610 to described main detection laser 200 and laser-assisted group 400
Temperature monitors and is sent to by temperature information described processing means 620, described processing means 620 in real time
After described temperature information is processed, control the duty of described refrigerator 630 according to result,
It is maintained at preset temperature range with the temperature by described main detection laser 200 and laser-assisted group 400
In.
Also, it should be noted in an embodiment of the application, described processing means 620 is single-chip microcomputer.
But in other embodiments of the application, described processing means 620 can also be microprocessor.The application couple
The concrete type of device that described processing means 620 uses does not limits, concrete depending on practical situation.
In another embodiment of the application, described refrigerator 630 is semiconductor cooler, but the application
The concrete kind of described refrigerator 630 is not limited, concrete depending on practical situation.
On the basis of above-described embodiment, a specific embodiment of the application provides a kind of collimator and extender
The particular make-up structure of system 300, as it is shown on figure 3, include:
It is arranged at the beam expanding lens 310 between described main detection laser 200 and described exit facet；
It is arranged at the described beam expanding lens 310 pin hole 320 away from described main detection laser 200 side；
It is arranged at the described pin hole 320 collimating mirror 330 away from described beam expanding lens 310 side；
It is arranged at the described collimating mirror 330 diaphragm 340 away from described pin hole 320 side.
It should be noted that the back focus place that position is described beam expanding lens 310 that described pin hole 320 is placed
Position, described collimating lens front focus overlaps with the back focus of described beam expanding lens 310.
Also, it should be noted the purpose arranging described collimating and beam expanding system 300 is to change main detection light beam
Diameter and the reduction angle of divergence, expand spot size, the thin light described main detection laser 200 sent simultaneously
The main detection laser of bundle form is converted to light beam diameter and meets the requirements and the collimation directional light of uniform intensity
Bundle.
Microgranule, the dust of optical element surface or spot in air can cause Laser emission to scatter, and
Owing to laser has the strongest coherence, these scattered lights can interfere phenomenon with veiling glare, to described
Main detection laser interferes.Filter it is thus desirable to pin hole 320 is arranged in the back focus of beam expanding lens 310
Veiling glare.Main detection laser after beam expanding lens 310 and pin hole 320 pools a minimum point, can
To be approximately a point source and to produce spherical wave.And spherical wave is not suitable as the inspection of gas sample chamber
Light-metering, does not meets preferable Mie scattering (Mie scattering) model, it is therefore desirable at described beam expanding lens
One collimating lens is set at the back focus of 310, thus spherical wave is converted to the satisfactory plane of diameter
Ripple, is more nearly the detection model of Mie theory.The effect of described diaphragm 340 is to through collimation thoroughly
The light beam of mirror limits, to obtain suitable spot size.
On the basis of above-described embodiment, in a preferred embodiment of the application, as shown in Figure 4, institute
Stating laser-assisted group 400 and include four auxiliary detection laser, described four auxiliary detection laser are uniform
It is distributed in described fourier lense 500 surrounding.
It should be noted that in an embodiment of the application, described laser-assisted group 400 is all right
It is five auxiliary detection laser or six auxiliary detection laser.The application is to described laser-assisted group
The quantity of the auxiliary detection laser that 400 include does not limits, concrete depending on practical situation.
On the basis of any of the above-described embodiment, in an embodiment of the application, described auxiliary detection
Laser instrument is blue laser or red laser or green (light) laser.Described auxiliary detection is swashed by the application
The concrete kind of light device does not limit, concrete depending on practical situation.But at one of the application preferably
In embodiment, described auxiliary detection laser is blue laser.
It should be noted that grain diameter determines scattered light with the wavelength of incident ray in testing sample
Distribution.Under identical angle of scattering, optical wavelength is the shortest, and corresponding particle diameter is the least.Therefore shortwave is used
Long blue laser can expand whole gas detecting system further as described auxiliary detection laser
Droplet measurement lower limit.
The shorter ultraviolet laser of optical maser wavelength is sent as described auxiliary it is understood that can also use
Help detection laser.But owing to the cost of ultraviolet laser is higher, and Ultra-Violet Laser detection is more difficult etc.
Reason, therefore blue laser as described auxiliary detection laser be under current technology the most preferred
A kind of way.
Accordingly, the embodiment of the present application additionally provides a kind of gas detecting system, is used for detecting gas to be measured,
As it is shown in figure 5, described system includes: at least one multi-point cooperative laser as described in above-mentioned any embodiment
Module A 10, gas sample chamber A20, detection device A30 and processing system A40；Wherein,
Described gas sample chamber A20 is used for storing testing sample；
Described multi-point cooperative laser module A10 is for sending main detection laser to described gas sample chamber A20
At least four bundle auxiliary detection laser, described main detection laser enters described gaseous sample in normal incidence mode
Room A20, described at least four bundle auxiliary detection laser are with the incident described gas sample chamber A20 of different angles；
Described detection device A30 is to be measured by carrying of described gas sample chamber A20 outgoing for detection
The main detection laser of sample message and at least four bundle auxiliary detection laser, and it is transferred to described process system
System A40；
Described processing system A40 for according to described in carry the main detection laser and extremely of testing sample information
Few four bundle auxiliary detection laser obtain the testing sample information of testing sample in described gas sample chamber A20.
It should be noted that described testing sample information includes the size of granule, grain in testing sample
The information such as degree distribution, granularity concentration.
On the basis of above-described embodiment, in an embodiment of the application, as it is shown in figure 5, described spy
Survey device A30 and include key light electric explorer A32 and auxiliary detector A31；Wherein,
Described key light electric explorer A32 is for detection carrying by described gas sample chamber A20 outgoing
The main detection laser of testing sample information；
Described auxiliary detector A31 is needed by described carrying of gas sample chamber A20 outgoing for detection
Survey at least four auxiliary detection laser of sample message.
It should be noted that owing to the exiting angle range of described at least four auxiliary detection laser is relatively big,
The most described auxiliary detector A31 needs the function with wide-angle detection.
In sum, the embodiment of the present application discloses a kind of multi-point cooperative laser module A10 and gas detecting system
System；Wherein, described multi-point cooperative laser module A10 can be with the form of normal incidence to described gas sample chamber
A20 sends main detection laser, can send at least to described gas sample chamber A20 in oblique incidence mode simultaneously
Article four, auxiliary detection laser；Incident direction and described main inspection due to described at least four bundle auxiliary detection laser
The incident direction surveying laser all differs, the light being totally reflected by gas sample chamber A20 after gas scattering to be measured
Testing sample information entrained by line the most all differs, therefore during testing sample is detected,
The testing sample information carried by the main detection laser of described gas sample chamber A20 outgoing can be passed through
At least four the auxiliary detections of described gas sample chamber A20 outgoing testing sample information institute entrained by laser
Make up, it is ensured that comprehensive to gas information detection to be measured, thus effectively expand droplet measurement
Lower limit, and then improve accuracy of detection and the reliability of detection data of whole gas detecting system.
And the integrative packaging due to described package casing 100 so that described multi-point cooperative laser module
A10 has good stability.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a multi-point cooperative laser module, is applied to gas detecting system based on light scattering method, and described detecting system includes gas sample chamber；It is characterized in that, described multi-point cooperative laser module includes:
Package casing, described package casing includes exit facet；
It is arranged at the main detection laser within described package casing, is used for sending main detection laser；
It is arranged at the collimating and beam expanding system between described main detection laser and described exit facet, for described main detection laser is carried out collimator and extender process；
Being arranged at the fourier lense in described exit facet, obtain main detection laser after the main detection laser after collimator and extender processes is carried out reverse Fourier transformation, described main detection laser enters described gas sample chamber in the way of normal incidence；
The laser-assisted group being arranged in described exit facet, described laser-assisted group includes that at least four assists detection laser, described at least four auxiliary detection laser is arranged at described fourier lense surrounding, for sending at least four bundle auxiliary detection laser in oblique incidence mode to described gas sample chamber；
It is arranged in described package casing, the control device being connected with described main detection laser and laser-assisted group, is used for driving described main detection laser to send main detection laser and for driving described laser-assisted to send at least four bundle auxiliary detection laser.
Multi-point cooperative laser module the most according to claim 1, it is characterised in that described control device is additionally operable to obtain described main detection laser and the temperature of laser-assisted group, and is stablized in preset temperature range.
Multi-point cooperative laser module the most according to claim 2, it is characterised in that described control device includes: temperature sensor, processing means, refrigerator and drive circuit；Wherein,
Described drive circuit is used for driving described main detection laser send main detection laser and drive described laser-assisted group transmission at least four bundle auxiliary detection laser, and keeps described main detection laser and described at least four bundles to assist the Wavelength stabilized of detection laser；
Described temperature sensor is for obtaining described main detection laser and the temperature information of laser-assisted group；
Described processing means is used for obtaining described temperature information, and controls the duty of described refrigerator according to described temperature information.
Multi-point cooperative laser module the most according to claim 3, it is characterised in that described processing means is single-chip microcomputer or microprocessor.
Multi-point cooperative laser module the most according to claim 1, it is characterised in that described collimating and beam expanding system includes:
It is arranged at the beam expanding lens between described main detection laser and described exit facet；
It is arranged at the described beam expanding lens pin hole away from described main detection laser side；
It is arranged at the described pin hole collimating mirror away from described beam expanding lens side；
It is arranged at the described collimating mirror diaphragm away from described pin hole side.
Multi-point cooperative laser module the most according to claim 1, it is characterised in that described laser-assisted group includes that four auxiliary detection laser, described four auxiliary detection laser are uniformly distributed in described fourier lense surrounding.
7. according to the multi-point cooperative laser module described in any one of claim 1-6, it is characterised in that described auxiliary detection laser is blue laser or red laser or green (light) laser.
8. according to the multi-point cooperative laser module described in any one of claim 1-6, it is characterised in that described main detection laser is red laser.
9. a gas detecting system, is used for detecting gas to be measured, it is characterised in that described system includes: at least one multi-point cooperative laser module, gas sample chamber, detection device and processing system as described in any one of claim 1-8；Wherein,
Described gas sample chamber is used for storing testing sample；
Described multi-point cooperative laser module is for sending main detection laser and at least four bundle auxiliary detection laser to described gas sample chamber, described main detection laser enters described gas sample chamber in normal incidence mode, and described at least four bundle auxiliary detection laser are with the incident described gas sample chamber of different angles；
Described detection device detects laser for detection by main detection laser and at least four bundle auxiliary of the testing sample information that carries of described gas sample chamber outgoing, and is transferred to described processing system；
Described processing system obtains the testing sample information of testing sample in described gas sample chamber for the main detection laser and at least four bundle auxiliary detection laser carrying testing sample information described in basis.
Gas detecting system the most according to claim 9, it is characterised in that described detection device includes key light electric explorer and auxiliary detector；Wherein,
Described key light electric explorer is for detecting the main detection laser of the testing sample information that carries by described gas sample chamber outgoing；
Described auxiliary detector detects laser for detection by least four auxiliary of the testing sample information that carries of described gas sample chamber outgoing.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645770A (en) * | 2018-07-24 | 2018-10-12 | 安徽尼古拉电子科技有限公司 | A kind of integrated laser haze detecting system based on computer vision |
| CN109470148A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Rotating cylindrical surface mirror high resolution stereo visual system and measurement method |
| CN109470145A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Polarization Modulation high resolution Stereo Vision Measurement System and method |
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| CN109470147A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Adaptive high resolution stereo visual system and measurement method |
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| CN109470144A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Line scans high resolution Stereo Vision Measurement System and method |
| CN109470146A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | High resolution stereo visual system and measurement method |
| CN109470143A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | External light source high resolution Stereo Vision Measurement System and method |
| CN109579700A (en) * | 2018-12-07 | 2019-04-05 | 哈尔滨工业大学 | High resolution Stereo Vision Measurement System and method are retouched in sweeping |
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| CN109470145A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Polarization Modulation high resolution Stereo Vision Measurement System and method |
| CN109470148A (en) * | 2018-12-07 | 2019-03-15 | 哈尔滨工业大学 | Rotating cylindrical surface mirror high resolution stereo visual system and measurement method |
| CN109596063B (en) * | 2018-12-07 | 2020-07-28 | 哈尔滨工业大学 | Multi-wavelength high-resolution stereo vision measuring device and method |
| CN109579700B (en) * | 2018-12-07 | 2020-07-28 | 哈尔滨工业大学 | Disc scanning high-resolution stereo vision measuring system and method |
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