CN102346134A - Reflective long optical path air monitoring instrument - Google Patents
Reflective long optical path air monitoring instrument Download PDFInfo
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- CN102346134A CN102346134A CN2011102748371A CN201110274837A CN102346134A CN 102346134 A CN102346134 A CN 102346134A CN 2011102748371 A CN2011102748371 A CN 2011102748371A CN 201110274837 A CN201110274837 A CN 201110274837A CN 102346134 A CN102346134 A CN 102346134A
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Abstract
The invention relates to a reflective long optical path air monitoring instrument, which comprises a light source generating device (3), a main light source reflecting device (4), a calibration device (5), an analysis system (9) and an auxiliary light source reflection device (7), wherein the light source generating device (3) is used for generating an optical signal; the main light source reflection device (4) is used for changing the optical path of the optical signal generated by the light source generating device (3) and sending the optical signal out and is fixed on a main base (2) through a driving device (1); the calibration device (5) is used for calibrating the optical signal; the analysis system (9) is connected with the calibration system (5); and the auxiliary light source reflection device (7) is fixed on an auxiliary base (6) and used for receiving the optical signal sent by the main light source reflecting device (4), reflecting the optical signal back to the main light source reflecting device (4) and transmitting the optical signal to the calibration device (5) through the main light source reflecting device (4). The air monitoring instrument has the advantages that: due to the adoption of the automatic calibration device, the instrument system can be calibrated on line; multi-azimuth measurement can be realized by a host, and the measurement range is wider; and a hollow pyramid prism is used for reflecting, thus the reflecting energy is increased.
Description
Technical field
The present invention relates to a kind of air monitoring instrument, especially relate to a kind of reflection long optical path air monitoring instrument.
Background technology
For long light path DOAS (Differential Optical Absorption Spectroscopy) technology, it mainly is to utilize airborne trace contamination composition that the absorption characteristic of ultraviolet ray and visible light wave range is carried out qualitative and quantitative analysis.It can monitor multiple trace gas composition simultaneously, measurement range can from 100 meters to thousands of rice, have higher sensitivity.Usually be to produce optical radiation for long light path DOAS The Application of Technology, be transferred to air path through the telescopic system collimation, at the other end (50 through the transmitter that utilization is arranged on the skyscraper ... 200 meters) corner reflector is installed it is reflected.The light that reflects through air path is handled through spectrometer, obtains radiation spectrum and the spectrum of the lamp gas componant in the different and definite atmosphere that obtain them of comparing.Because each gas all has the characteristic absorption spectrum of oneself, the variation of analyzing spectrum just can confirm to absorb the concentration of gas and gas.But in the monitoring air, there is following weak point during gas concentration for existing long light path atmosphere testing tool: reconnaissance, the installation of the big gas tester of at first long light path; Because transmitter must select a point on a skyscraper when mounted; Outside 100 meters, selecting another point for receiver; The middle avoiding obstacles that needs; But often after instrument is installed and used a period of time; Possibly produce new barrier at point-to-point transmission, just there is the problem of reconnaissance for the second time in this; Secondly because this remote reconnaissance setting is unfavorable for the big gas tester of long light path is keeped in repair, cost manpower and time, efficient is poor.
Summary of the invention
The present invention solves the existing in prior technology technical matters; A kind of self-checking device that has is provided, can the on-line proving instrument system; . can carry out multi-faceted measurement by a main frame, test specification is wider; Adopt hollow prism of corner cube to reflect, improved the energy of reflection and adopted the ultraviolet difference technology, can monitor a kind of reflection long optical path air monitoring instrument of the multiple polluter in the atmosphere.
Above-mentioned technical matters of the present invention mainly is able to solve through following technical proposals:
A kind of reflection long optical path air monitoring instrument; It is characterized in that, comprise being used to produce light signal and being fixed on the light source generating means on the main base through a drive unit; Be used to change the light signal light path of light source generating means generation and the main light source reflection unit that this light signal is launched; The caliberating device that is used for the nominal light signal; The analytic system 9 that links to each other with caliberating device 5; And be fixed on the light signal that is used for the emission of main light source reflection unit on the sub-mount and will on its reflected back main light source reflection unit and through the main light source reflection unit light signal be reached the secondary light source reflection unit of caliberating device.
At above-mentioned a kind of reflection long optical path air monitoring instrument, described main light source reflection unit comprises light source master tube, is arranged on light source master drum outer wall and can makes light signal pierce into the interior optical signal generator of light source master tube, be arranged on the light signal reflection unit that is used to change the optical signal transmission circuit in the said light source master tube.
At above-mentioned a kind of reflection long optical path air monitoring instrument, said optical signal reflection unit comprises being fixed on and is used to change above-mentioned optical signal generator in the light source master tube and injects the optical signal reflector apparatus of the vertical light signal light path in the light source master tube, be arranged on light source master tube one end and be used for the optical signal that said optical signal reflector apparatus is reflected is converted to parallel optical signal and this parallel optical signal is reflexed to the parallel optical signal that receives secondary light source reflection unit institute reflected back on the above-mentioned secondary light source reflection unit then at last parallel optical signal being reflexed to the spherical mirror on the above-mentioned caliberating device by the optical signal reflector apparatus.
At above-mentioned a kind of reflection long optical path air monitoring instrument; Described optical signal reflector apparatus comprises the principal reflection bearing that is fixed in the light source master tube, is arranged on the adjusting slider that is fixed with the principal reflection carriage on the principal reflection bearing and on it and the principal reflection carriage is reciprocatingly slided on said principal reflection bearing; Said adjusting slider is by regulating micrometer control; Described principal reflection carriage is provided with symmetrically arranged first principal reflection mirror of light source master tube central shaft and second principal reflection mirror, and described first principal reflection mirror and second principal reflection mirror all are connected with said principal reflection carriage by the revolution adjustment screw.
At above-mentioned a kind of reflection long optical path air monitoring instrument, described secondary light source reflection unit comprises through an angle mirror tube rotary support and is fixed on the angle mirror tube on the angle mirror tube bearing and is arranged on the light signal angle mirror device in the said angle mirror tube.
At above-mentioned a kind of reflection long optical path air monitoring instrument, described light signal angle mirror device comprises three angles angle mirror of 45 degree each other,
At above-mentioned a kind of reflection long optical path air monitoring instrument, the angle of said first principal reflection mirror and second principal reflection mirror is 90 degree.
At above-mentioned a kind of reflection long optical path air monitoring instrument; This reflection long optical path air monitoring instrument also comprises a school electro-optical device that is used to proofread and correct light signal; Described school electro-optical device comprises that the school light that is arranged on the other end relative with above-mentioned spherical mirror in the above-mentioned light source master tube regulates seat, is fixed on said school light and regulates the school light microscopic support on the seat and be separately fixed at the first school light reflection mirror and the second school light reflection mirror light microscopic support two ends, said school and that be provided with school light microscopic carriage center rotational symmetry, and the angle of the said first school light reflection mirror and the second school light reflection mirror is 90 to spend.
At above-mentioned a kind of reflection long optical path air monitoring instrument; Described drive unit adds the commentaries on classics support through a main tube and above-mentioned light source master tube is fixed; Said main tube adds the commentaries on classics support can do circumferential 360 degree rotations under the drive unit effect; Said master's tube adds the commentaries on classics support and is provided with a pitching motor, and said main tube adds the commentaries on classics support and is connected fixing with said pitching motor output shaft.
At above-mentioned a kind of reflection long optical path air monitoring instrument; It is fixing that said school light microscopic support is regulated seat through a school light microscopic motor and above-mentioned school light; Said school light microscopic support is fixed on the light microscopic motor output shaft of school; And can under the driving of school light microscopic motor, do circumferential 360 rotations; The radius-of-curvature of described concave mirror is between 20 centimetres to 500 centimetres; Above-mentioned first principal reflection mirror, second principal reflection mirror, the first school light reflection mirror, the second school light reflection mirror and spherical mirror materials used are quartz or ultraviolet optics silica glass material; Its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating.
Therefore, the present invention has following advantage: 1. have self-checking device, and can the on-line proving instrument system; 2. can carry out multi-faceted measurement by a main frame, test specification is wider; 3, adopt hollow prism of corner cube to reflect, improved the energy of reflection; 4, adopt the ultraviolet difference technology, can monitor the multiple polluter in the atmosphere.
Description of drawings
Fig. 1 is a kind of main TV structure synoptic diagram of the present invention;
Fig. 2 is the plan structure synoptic diagram of Fig. 1;
Fig. 3 is the sectional structure synoptic diagram along the A-A hatching line of Fig. 1;
Fig. 4 is the left TV structure synoptic diagram of Fig. 1;
Fig. 5 is the light channel structure synoptic diagram of duty of the present invention;
Fig. 6 is the light channel structure synoptic diagram of align mode of the present invention;
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technical scheme of the present invention.Among the figure, drive unit 1; Main tube adds changes support 101; Pitching motor 102; Main base 2; Light source generating means 3; Main light source reflection unit 4; Light source master tube 401; Optical signal generator 402; Light signal reflector apparatus 403; Spherical mirror 404; Principal reflection bearing 405; Principal reflection carriage 406; Adjusting slider 407; Regulate micrometer 408 first principal reflection mirrors 409; Second principal reflection mirror 410; Revolution set screw 411; Caliberating device 5; Sub-mount 6; Secondary light source reflection unit 7; Angle mirror tube rotary support 701; Angle mirror tube bearing 702; Angle mirror tube 703; Angle mirror 704; School electro-optical device 8; School light is regulated seat 801; School light microscopic support 802; The first school light reflection mirror 803; The second school light reflection mirror 804; School light microscopic motor 805; Analytic system 9.
Embodiment:
A kind of reflection long optical path air monitoring instrument; Comprise the light source generating means 3 that is used to produce light signal; Be used to change the light signal light path that light source generating means 3 produces and this light signal is launched and be fixed on the main light source reflection unit 4 on the main base 2 through a drive unit 1; The caliberating device 5 that is used for the nominal light signal; The analytic system 9 that links to each other with caliberating device 5; And be fixed on the light signal that is used for 4 emissions of main light source reflection unit on the sub-mount 6 and will on its reflected back main light source reflection unit 4 and through main light source reflection unit 4 light signal be reached the secondary light source reflection unit 7 of caliberating device 5; Drive unit 1 adds commentaries on classics support 101 through a main tube to be fixed with above-mentioned light source master tube 401; Said main tube adds commentaries on classics support 101 can do circumferential 360 degree rotations under drive unit 1 effect; Said master's tube adds commentaries on classics support 101 and is provided with a pitching motor 102, and said main tube adds commentaries on classics support 101 and is connected fixing with said pitching motor 102 output shafts.
Main light source reflection unit 4 comprises light source master tube 401, be arranged on light source master tube 401 outer walls and can make light signal pierce into optical signal generator 402 in the light source master tube 401, be arranged on the light signal reflection unit that is used to change the optical signal transmission circuit in the said light source master tube 401.
Optical signal reflecting means comprises a fixed main tube 401 of the light source of the optical signal generator for changing the light source 402 enters the main tube 401 of the vertical optical path of the optical signal of the optical signal reflecting mirror unit 403, the main tube 401 disposed on one end of the light source for said optical signal reflected by the mirror device 403 converts the optical signal into parallel optical signal and the optical signal reflected parallel to said sub-light reflection means 7 then receives the sub-light reflection means 7 is reflected back parallel to the optical signal and finally parallel to the optical signal by the optical signal reflected to the mirror unit 403 on the calibration device 5 spherical mirror 404.
Optical signal reflector apparatus 403 comprises the principal reflection bearing 405 that is fixed in the light source master tube 401, is arranged on the adjusting slider 407 that is fixed with principal reflection carriage 406 on the principal reflection bearing 405 and on it and principal reflection carriage 406 is reciprocatingly slided on said principal reflection bearing 405; Said adjusting slider 407 is by regulating micrometer 408 controls; Described principal reflection carriage 406 is provided with symmetrically arranged first principal reflection mirror 409 of light source master tube 401 central shafts and second principal reflection mirror 410, and described first principal reflection mirror 409 and second principal reflection mirror 410 all are connected with said principal reflection carriage 406 by revolution adjustment screw 411.The angle of first principal reflection mirror 409 and second principal reflection mirror 410 is 90 degree.
Secondary light source reflection unit 7 comprises through an angle mirror tube rotary support 701 and is fixed on the angle mirror tube 703 on the angle mirror tube bearing 702 and is arranged on the light signal angle mirror device in the said angle mirror tube 703; Light signal angle mirror device comprises three angles angle mirror 704 of 45 degree each other
This reflection long optical path air monitoring instrument also comprises a school electro-optical device 8 that is used to proofread and correct light signal; Described school electro-optical device 8 comprise the school light that is arranged in the above-mentioned light source master tube 401 other end relative with above-mentioned spherical mirror 404 regulate seat 801, be fixed on said school light regulate the school light microscopic support 802 on the seat 801 and be separately fixed at light microscopic support 802 two ends, said school and with the symmetrically arranged first school light reflection mirror 803 of school light microscopic support 802 central shafts and the second school light reflection mirror 804, the angle of the said first school light reflection mirror 803 and the second school light reflection mirror 804 is 90 to spend.
It is fixing that school light microscopic support 802 is regulated seat 801 through a school light microscopic motor 805 and above-mentioned school light; Said school light microscopic support 802 is fixed on light microscopic motor 805 output shafts of school; And can under the driving of school light microscopic motor 805, do circumferential 360 rotations; The radius-of-curvature of described spherical mirror 404 is between 20 centimetres to 500 centimetres; Above-mentioned first principal reflection mirror 409, second principal reflection mirror 410, the first school light reflection mirror 803, the second school light reflection mirror 804 and spherical mirror 404 materials useds are quartz or ultraviolet optics silica glass material; Its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating.
Need to prove; Drive unit of the present invention 1 and pitching motor 102 be used for driving main tube add change that support 101 is done circumferentially and luffing the time; Can adopt a gear train to carry out transmission respectively; Gear train can adopt the form of principal and subordinate wheel; The perhaps form of internal tooth external tooth engagement; And combine actual conditions to adopt suitable gear ratio, make turning to of light source master tube 401 more accurate.In the present embodiment; Main light source reflection unit 4 can only need one; Secondary light source reflection unit 7 can be for a plurality of; Be installed in the orientation that different needs detect, 4 of main light source reflection units need be aimed at the air quality that secondary light source reflection unit 7 gets final product this orientation of real time on-line monitoring under the effect of drive unit 1 and pitching motor 102.
Duty of the present invention is divided into two steps, at first carries out the light path calibration, as shown in Figure 6; Start school light microscopic motor 805; Make the school light microscopic support 802 drive first school light reflection mirrors 803 and the second school light reflection mirror 804 rotate to Fig. 6 position, light path is moved towards as shown in Figure 6, carries out the light path calibration; Then; Start school light microscopic motor 805 once more, make the school light microscopic support 802 drive first school light reflection mirrors 803 and the second school light reflection mirror 804 rotate to the horizontal level of Fig. 5, carry out atmospheric surveillance; Light path is moved towards as shown in Figure 5, and last light signal gets into analyser and detects.
The present invention can make main light source reflection unit 4 trace into the position of the detection of being permitted automatically; Adopt the characteristic spectral line of different material to demarcate, in addition, optical signal generator 402 can be controlled automatically; Adopt the constant current constant voltage light source, institute of the present invention photometry spectral limit is at 180-600 μ m.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used drive unit 1 morely; Main tube adds changes support 101; Pitching motor 102; Main base 2; Light source generating means 3; Main light source reflection unit 4; Light source master tube 401; Optical signal generator 402; Light signal reflector apparatus 403; Spherical mirror 404; Principal reflection bearing 405; Principal reflection carriage 406; Adjusting slider 407; Regulate micrometer 408 first principal reflection mirrors 409; Second principal reflection mirror 410; Revolution set screw 411; Caliberating device 5; Sub-mount 6; Secondary light source reflection unit 7; Angle mirror tube rotary support 701; Angle mirror tube bearing 702; Angle mirror tube 703; Angle mirror 704; School electro-optical device 8; School light is regulated seat 801; School light microscopic support 802; The first school light reflection mirror 803; The second school light reflection mirror 804; School light microscopic motor 805; Analytic system 9 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (10)
1. one kind reflects long optical path air monitoring instrument; It is characterized in that, comprise the light source generating means (3) that is used to produce light signal; Be used to change the light signal light path that light source generating means (3) produces and this light signal is launched and be fixed on the main light source reflection unit (4) on the main base (2) through a drive unit (1); The caliberating device (5) that is used for the nominal light signal; The analytic system (9) that links to each other with caliberating device (5); And be fixed on the light signal that is used for main light source reflection unit (4) emission on the sub-mount (6) and will on its reflected back main light source reflection unit (4) and through main light source reflection unit (4) light signal be reached the secondary light source reflection unit (7) of caliberating device (5).
2. a kind of reflection long optical path air monitoring instrument according to claim 1; It is characterized in that described main light source reflection unit (4) comprises light source master tube (401), is arranged on light source master tube (401) outer wall and can makes light signal pierce into the interior optical signal generator (402) of light source master tube (401), be arranged on the light signal reflection unit that is used to change the optical signal transmission circuit in the said light source master tube (401).
3. a kind of reflection long optical path air monitoring instrument according to claim 2; It is characterized in that said optical signal reflection unit comprises being fixed on and is used to change above-mentioned optical signal generator (402) in the light source master tube (401) and injects the optical signal reflector apparatus (403) of the vertical light signal light path in the light source master tube (401), be arranged on light source master tube (401) one ends and be used for the optical signal that said optical signal reflector apparatus (403) is reflected is converted to parallel optical signal and this parallel optical signal is reflexed to the parallel optical signal that receives secondary light source reflection unit (7) institute reflected back on the above-mentioned secondary light source reflection unit (7) then at last parallel optical signal being reflexed to the spherical mirror (404) on the above-mentioned caliberating device (5) by optical signal reflector apparatus (403).
4. a kind of reflection long optical path air monitoring instrument according to claim 3; It is characterized in that; Described optical signal reflector apparatus (403) comprises the principal reflection bearing (405) that is fixed in the light source master tube (401), is arranged on the adjusting slider (407) that principal reflection bearing (405) was gone up and was fixed with on it principal reflection carriage (406) and principal reflection carriage (406) is reciprocatingly slided on said principal reflection bearing (405); Said adjusting slider (407) is by regulating micrometer (408) control; Described principal reflection carriage (406) is provided with light source master tube (401) symmetrically arranged first principal reflection mirror of central shaft (409) and second principal reflection mirror (410), and described first principal reflection mirror (409) and second principal reflection mirror (410) all are connected with said principal reflection carriage (406) by revolution adjustment screw (411).
5. a kind of reflection long optical path air monitoring instrument according to claim 1; It is characterized in that described secondary light source reflection unit (7) comprises through an angle mirror tube rotary support (701) and is fixed on the angle mirror tube (703) on the angle mirror tube bearing (702) and is arranged on the light signal angle mirror device in the said angle mirror tube (703).
6. a kind of reflection long optical path air monitoring instrument according to claim 5 is characterized in that, described light signal angle mirror device comprises three angles angle mirror (704) of 45 degree each other,
7. a kind of reflection long optical path air monitoring instrument according to claim 4 is characterized in that, the angle of said first principal reflection mirror (409) and second principal reflection mirror (410) is 90 degree.
8. a kind of reflection long optical path air monitoring instrument according to claim 3; It is characterized in that; This reflection long optical path air monitoring instrument also comprises a school electro-optical device (8) that is used to proofread and correct optical signal; Described school electro-optical device (8) comprise the school light that is arranged on the other end relative with above-mentioned spherical mirror (404) in the above-mentioned light source master tube (401) regulate seat (801), be fixed on said school light regulate the school light microscopic support (802) on the seat (801) and be separately fixed at said school light microscopic support (802) two ends and with the symmetrically arranged first school light reflection mirror (803) of school light microscopic support (802) central shaft and the second school light reflection mirror (804), the angle of the said first school light reflection mirror (803) and the second school light reflection mirror (804) is 90 to spend.
9. a kind of reflection long optical path air monitoring instrument according to claim 1; It is characterized in that; It is fixing with above-mentioned light source master tube (401) that described drive unit (1) adds commentaries on classics support (101) through a main tube; Said main tube adds commentaries on classics support (101) can do circumferential 360 degree rotations under drive unit (1) effect; Said master's tube adds commentaries on classics support (101) and is provided with a pitching motor (102), and said main tube adds commentaries on classics support (101) and is connected fixing with said pitching motor (102) output shaft.
10. a kind of reflection long optical path air monitoring instrument according to claim 8; It is characterized in that; It is fixing that said school light microscopic support (802) is regulated seat (801) through a school light microscopic motor (805) and above-mentioned school light; Said school light microscopic support (802) is fixed on school light microscopic motor (805) output shaft; And can under the driving of school light microscopic motor (805), do circumferential 360 rotations; The radius-of-curvature of described spherical mirror (404) is between 20 centimetres to 500 centimetres; Above-mentioned first principal reflection mirror (409); Second principal reflection mirror (410); The first school light reflection mirror (803); The second school light reflection mirror (804) and spherical mirror (404) materials used are quartz or ultraviolet optics silica glass material; Its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating.
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| CN2011102748371A CN102346134A (en) | 2011-09-16 | 2011-09-16 | Reflective long optical path air monitoring instrument |
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Cited By (5)
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| CN103884677A (en) * | 2012-12-19 | 2014-06-25 | 北京大方科技有限责任公司 | Gas analyzer sample gas chamber apparatus with characteristic of easy optical path adjustment |
| CN105115474A (en) * | 2015-08-10 | 2015-12-02 | 金华市蓝海光电技术有限公司 | Rotating scanning distance measuring instrument |
| CN105334163A (en) * | 2015-12-11 | 2016-02-17 | 南京霍普斯科技有限公司 | Device used for long optical path gas sample pool assembling and adjusting test |
| CN111896492A (en) * | 2020-06-29 | 2020-11-06 | 山东师范大学 | Long-optical-path gas detection system and method based on quantum cascade laser |
| CN114112791A (en) * | 2021-11-16 | 2022-03-01 | 广州市元奥仪器有限公司 | Portable double-optical-path schlieren instrument |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103884677A (en) * | 2012-12-19 | 2014-06-25 | 北京大方科技有限责任公司 | Gas analyzer sample gas chamber apparatus with characteristic of easy optical path adjustment |
| CN103884677B (en) * | 2012-12-19 | 2017-05-03 | 北京大方科技有限责任公司 | Gas analyzer sample gas chamber apparatus with characteristic of easy optical path adjustment |
| CN105115474A (en) * | 2015-08-10 | 2015-12-02 | 金华市蓝海光电技术有限公司 | Rotating scanning distance measuring instrument |
| CN105115474B (en) * | 2015-08-10 | 2017-12-29 | 金华市蓝海光电技术有限公司 | A kind of rotation sweep rangefinder |
| CN105334163A (en) * | 2015-12-11 | 2016-02-17 | 南京霍普斯科技有限公司 | Device used for long optical path gas sample pool assembling and adjusting test |
| CN105334163B (en) * | 2015-12-11 | 2017-12-22 | 南京霍普斯科技有限公司 | A kind of device for long light path gas sample cell adjustment test |
| CN111896492A (en) * | 2020-06-29 | 2020-11-06 | 山东师范大学 | Long-optical-path gas detection system and method based on quantum cascade laser |
| CN114112791A (en) * | 2021-11-16 | 2022-03-01 | 广州市元奥仪器有限公司 | Portable double-optical-path schlieren instrument |
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Application publication date: 20120208 |