CN107561016A - A kind of system of laser acquisition gas concentration - Google Patents
A kind of system of laser acquisition gas concentration Download PDFInfo
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- CN107561016A CN107561016A CN201710708605.XA CN201710708605A CN107561016A CN 107561016 A CN107561016 A CN 107561016A CN 201710708605 A CN201710708605 A CN 201710708605A CN 107561016 A CN107561016 A CN 107561016A
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- catoptric system
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Abstract
The invention belongs to laser technology field, more particularly to a kind of system of laser acquisition gas concentration, included successively according to light path direction of advance：Lasing light emitter, catoptric system one, catoptric system two, independent catoptric system one, independent catoptric system two, catoptric system three, reception device, wherein, the laser beam that catoptric system one is used to send lasing light emitter is mapped to catoptric system two with different angle, and catoptric system two is used to that two groups of light of different directions will to be become from the laser beam of one incoming different angle of catoptric system；Independent catoptric system one is divided into two groups, two groups of light from catoptric system two are received respectively, two groups of light cross one another to form two-dimensional measurement region by the reflection of independent catoptric system one, and catoptric system three is reached after the reflection of independent catoptric system two, by the reflecting focal of catoptric system three to reception device.
Description
Technical field
The invention belongs to laser technology field, more particularly to a kind of system of laser acquisition gas concentration.
Background technology
During existing laser acquisition gas concentration, the route arrangement of laser substantially has two kinds of single channel and multichannel
Method.For single channel method, used each lasing light emitter can only provide a laser beam, in the another of tested quantity space
One end is received using corresponding reception device.The process of laser acquisition gas concentration so, can only be surveyed in a light path
Mean concentration, the distribution situation of gas concentration on two dimensional surface can not be detected.Multichannel light source can realize concentration on section
The measurement of distribution.Multichannel light source has two kinds of implementation methods：Its method one is to use a single lasing light emitter per light source all the way, is swashed
Light after measurement zone by reception sensor by being received.A laser beam is sent and receives, light source utilization rate is low, and use is multiple
Lasing light emitter, cause the rising of system price by a relatively large margin.Its method two is that a lasing light emitter is a plurality of to produce by light splitting
Laser beam, laser beam is passed through tested quantity space, carried out in the other end of tested quantity space using corresponding reception device
Receive.The process of laser acquisition gas concentration so, due to a lasing light emitter is divided into multichannel, reduce per light all the way
Energy, cause the decline of signal quality, produce to measuring detrimental effect.
The content of the invention
In consideration of it, the present invention proposes a kind of system of laser acquisition gas concentration, wrapped successively according to light path direction of advance
Include：Lasing light emitter, catoptric system one, catoptric system two, independent catoptric system one, independent catoptric system two, catoptric system three, reception
Device, wherein, the laser beam that catoptric system one is used to send lasing light emitter is mapped to catoptric system two, reflective system with different angle
System two is used to that two groups of light of different directions will to be become from the laser beam of one incoming different angle of catoptric system；It is independent anti-
Photosystem one is divided into two groups, receives two groups of light from catoptric system two respectively, and two groups of light pass through independent catoptric system one
Reflection cross one another to form two-dimensional measurement region, and by independent catoptric system two reflection after reach catoptric system three, pass through
The reflecting focal of catoptric system three is to reception device.
The catoptric system one includes the reflective mirror being connected with motor.
The catoptric system one is prism.
The catoptric system two and or catoptric system three be to be spliced by two half paraboloid reflective mirrors, and two and half
The focus of parabolic reflector overlaps.
The independent catoptric system one and or independent catoptric system two be made up of multiple identical plane mirrors, and often
The adjustable angle of individual plane mirror；Independent catoptric system one and independent catoptric system two are located at the both sides in two-dimensional measurement region.
The reception device is located at the focal position of catoptric system three.
The beneficial effects of the invention are as follows：The survey to the Gas concentration distribution in region to be measured on two dimensional surface can be realized
Amount, real-time is good, meets the requirement of actual production.Different size of region to be measured is adapted to, it is applied widely.Lasing light emitter,
The component of the system of the laser acquisition gas concentration such as receiving device can be placed into the place away from measured zone, work as measured zone
For high temperature, be corrosive etc. mal-condition when, can still complete to measure and do not influence measurement accuracy.Reduce lasing light emitter and receive and fill
The quantity put, a pair of lasing light emitters can complete the transmitting and reception of multi-stripe laser light with reception device, improve measuring system
Economy.Laser light number of lines in region to be measured is adjustable, meets the requirement of different industrial precision.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the system of laser acquisition gas concentration provided by the invention；
Fig. 2 is a kind of structural representation of catoptric system one provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of catoptric system one provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of catoptric system one provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of the system of laser acquisition gas concentration provided in an embodiment of the present invention；
Reference：
1-lasing light emitter；2-catoptric system one；3-catoptric system two；4-laser beam；5-it is tested gas；6-to be measured
Region；7-independent catoptric system one；8-independent catoptric system two；9-catoptric system three；10-reception device.
Embodiment
Below in conjunction with the accompanying drawings, embodiment is elaborated.
As shown in figure 1, the present invention proposes a kind of system of laser acquisition gas concentration, according to light path direction of advance successively
Including：Lasing light emitter, catoptric system one, catoptric system two, independent catoptric system one, independent catoptric system two, catoptric system three, connect
Receiving apparatus, wherein, the laser beam that catoptric system one is used to send lasing light emitter is mapped to catoptric system two with different angle, reflective
System two is used to that two groups of light of different directions will to be become from the laser beam of one incoming different angle of catoptric system；It is independent
Catoptric system one is divided into two groups, receives two groups of light from catoptric system two respectively, and two groups of light pass through independent catoptric system
One reflection is crossed one another to form two-dimensional measurement region, and catoptric system three, warp are reached after the reflection of independent catoptric system two
The reflecting focal of catoptric system three is crossed to reception device.
As shown in Fig. 2 in the system of the laser acquisition gas concentration, catoptric system one includes plane mirror and electricity
Machine, wherein plane mirror are inclined at an angle, and plane mirror is connected with motor by connecting rod, and lasing light emitter passes through fixation
Support is fixed on the base of catoptric system one, and the laser beam that lasing light emitter is sent incides the minute surface of plane mirror vertically
On.
The point that the laser beam of catoptric system one is incided on plane mirror is located in the focus of catoptric system two, to ensure
Emergent ray can be parallel to each other.
Catoptric system two is spliced by two half paraboloids, and the focus of two half paraboloids overlaps.
Independent catoptric system one and independent catoptric system two form by multiple identical plane mirrors, and each plane
The adjustable angle of reflective mirror.Independent catoptric system one and independent catoptric system two are located at the both sides in two-dimensional measurement region.
Catoptric system three is spliced by two half paraboloids, and the focus of two half paraboloids overlaps.
Reception device is located at the focal position of catoptric system three.
As shown in figure 3, in the system of the laser acquisition gas concentration, catoptric system one includes polyhedron reflective mirror and electricity
Machine, polyhedron reflective mirror are connected with motor by connecting rod, and lasing light emitter is fixed on the side of catoptric system one by fixed support,
The laser beam of lasing light emitter transmitting is impinged perpendicularly on the minute surface of polyhedron reflective mirror.
As shown in figure 4, in the system of the laser acquisition gas concentration, catoptric system one is prism, lasing light emitter outgoing
Laser beam forms fan beam after prism.
As shown in figure 5, the embodiment of the present invention provides a kind of system of laser acquisition gas concentration, including lasing light emitter, it is reflective
System one, catoptric system two, independent catoptric system one, independent catoptric system two, catoptric system three.It is dense in the laser acquisition gas
In the system of degree, the laser beam and region to be measured being emitted through catoptric system two are not parallel, and remaining is same with Fig. 1.
Above-described embodiment is only the preferable embodiment of the present invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, the change that can readily occur in or replace
Change, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be defined.
Claims (6)
1. a kind of system of laser acquisition gas concentration, it is characterised in that included successively according to light path direction of advance：Lasing light emitter,
Catoptric system one, catoptric system two, independent catoptric system one, independent catoptric system two, catoptric system three, reception device, wherein,
The laser beam that catoptric system one is used to send lasing light emitter is mapped to catoptric system two with different angle, and catoptric system two is used for will
Become two groups of light of different directions from the laser beam of one incoming different angle of catoptric system；Independent catoptric system one divides
Into two groups, two groups of light from catoptric system two are received respectively, and two groups of light are mutual by the reflection of independent catoptric system one
Two-dimensional measurement region is intersected to form, and catoptric system three is reached after the reflection of independent catoptric system two, by catoptric system three
Reflecting focal is to reception device.
2. system according to claim 1, it is characterised in that the catoptric system one includes the reflective mirror being connected with motor.
3. system according to claim 1, it is characterised in that the catoptric system one is prism.
4. system according to claim 1, it is characterised in that the catoptric system two and or catoptric system three be by two
Half paraboloid reflective mirror is spliced, and the focus of two half paraboloid reflective mirrors overlaps.
5. system according to claim 1, it is characterised in that the independent catoptric system one and or independent catoptric system two
It is made up of multiple identical plane mirrors, and the adjustable angle of each plane mirror；Independent catoptric system one and independence are anti-
Photosystem two is located at the both sides in two-dimensional measurement region.
6. system according to claim 1, it is characterised in that the reception device is located at the focal position of catoptric system three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708605.XA CN107561016B (en) | 2017-08-17 | 2017-08-17 | System for detecting gas concentration by laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708605.XA CN107561016B (en) | 2017-08-17 | 2017-08-17 | System for detecting gas concentration by laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107561016A true CN107561016A (en) | 2018-01-09 |
| CN107561016B CN107561016B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710708605.XA Expired - Fee Related CN107561016B (en) | 2017-08-17 | 2017-08-17 | System for detecting gas concentration by laser |
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Citations (7)
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| CN101393382A (en) * | 2007-09-18 | 2009-03-25 | 中强光电股份有限公司 | Projection display and light source module thereof |
| CN102262843A (en) * | 2011-08-22 | 2011-11-30 | 张秋霞 | Dot matrix display conversion device |
| CN102564343A (en) * | 2011-12-29 | 2012-07-11 | 中国科学院长春光学精密机械与物理研究所 | Detection device for surface-shape errors of solar trench type curved surface reflector |
| CN102768024A (en) * | 2012-07-05 | 2012-11-07 | 哈尔滨工业大学 | Confocal measuring device based on separable reflector set |
| CN102896421A (en) * | 2012-07-30 | 2013-01-30 | 沈明亚 | LCOS (liquid crystal on silicon) laser micromachining system and laser micromachining method |
| CN103869385A (en) * | 2014-04-02 | 2014-06-18 | 昆明理工大学 | Method and device for detecting rain amount through laser |
| CN106770145A (en) * | 2017-03-10 | 2017-05-31 | 上海理工大学 | Multi-path frequency-division duplicating fluorescence microscopy detection method is realized based on DMD |
-
2017
- 2017-08-17 CN CN201710708605.XA patent/CN107561016B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393382A (en) * | 2007-09-18 | 2009-03-25 | 中强光电股份有限公司 | Projection display and light source module thereof |
| CN102262843A (en) * | 2011-08-22 | 2011-11-30 | 张秋霞 | Dot matrix display conversion device |
| CN102564343A (en) * | 2011-12-29 | 2012-07-11 | 中国科学院长春光学精密机械与物理研究所 | Detection device for surface-shape errors of solar trench type curved surface reflector |
| CN102768024A (en) * | 2012-07-05 | 2012-11-07 | 哈尔滨工业大学 | Confocal measuring device based on separable reflector set |
| CN102896421A (en) * | 2012-07-30 | 2013-01-30 | 沈明亚 | LCOS (liquid crystal on silicon) laser micromachining system and laser micromachining method |
| CN103869385A (en) * | 2014-04-02 | 2014-06-18 | 昆明理工大学 | Method and device for detecting rain amount through laser |
| CN106770145A (en) * | 2017-03-10 | 2017-05-31 | 上海理工大学 | Multi-path frequency-division duplicating fluorescence microscopy detection method is realized based on DMD |
Non-Patent Citations (1)
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