CN201133899Y - Long optical path atmospheric monitoring instrument - Google Patents
Long optical path atmospheric monitoring instrument Download PDFInfo
- Publication number
- CN201133899Y CN201133899Y CNU2007201253652U CN200720125365U CN201133899Y CN 201133899 Y CN201133899 Y CN 201133899Y CN U2007201253652 U CNU2007201253652 U CN U2007201253652U CN 200720125365 U CN200720125365 U CN 200720125365U CN 201133899 Y CN201133899 Y CN 201133899Y
- Authority
- CN
- China
- Prior art keywords
- concave mirror
- light
- prism
- monitoring instrument
- optics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to an air monitoring instrument with a long optical length, which can be open or close. The air monitoring instrument with a long optical length consists of an optical generation part and a signal processing part; wherein, the optical generation part consists of an emitter, a receiver and multiple groups of concave mirrors or prisms which are arranged between the emitter and the receiver and used to form an enough optical length; a light ray is reflected among the concave mirrors or fully reflected among the prisms in order to generate an enough optical length; the signal processing part consists of optical fibers, a spectrometer, a scanner, a photoelectric detector and a computer, which are orderly connected together, and the input end of the signal processing part is connected with the receiver via an optical fiber.
Description
Technical field
The utility model relates to a kind of environmental testing technology, particularly be a kind of gas analysis instrument that atmospheric gaseous components and content are detected.
Background technology
For long light path DOAS (Differential Optical Absorption Spectroscopy) technology, it mainly is to utilize airborne trace contamination composition that the absorption feature 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, at the other end (50---200 rice) corner reflector is installed it is reflected by the telescopic system collimation by the transmitter that utilization is arranged on the skyscraper.The light that reflects through air path is handled through spectrometer, obtains compare gas componant in the different and definite atmosphere that obtain them of radiation spectrum and the spectrum of lamp.Because each gas all has the characteristic absorption spectrum of oneself, the variation of analyzing spectrum just can determine to absorb the concentration of gas and gas.
But have the following disadvantages during gas concentration in the monitoring air 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, may 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.
For overcoming above-mentioned defective, the utility model creator has obtained this creation finally through long term studies and test.
Summary of the invention
The purpose of this utility model is, a kind of long optical path air monitoring instrument is provided, in order to overcome above-mentioned defective.
The technical solution adopted in the utility model is for achieving the above object, a kind of long optical path air monitoring instrument at first is provided, it is open, comprise that optics produces part and signal processing, described optics generating unit branch comprises: transmitter, be provided with one first plane mirror with the light path of described transmitter emission light, light path through first level crossing emission back light is provided with one first concave mirror, the light path of described first concave mirror reflection back light is provided with one second concave mirror, the light path of described second concave mirror reflection back light is provided with one the 3rd concave mirror, one the 4th concave mirror is arranged on the light path of described the 3rd concave mirror reflection ray, and the light path of described the 4th concave mirror reflection back light is provided with a receiver;
Described signal processing comprises, the optical fiber of Lian Jieing, spectrometer, scanner, photodetector and a computing machine in regular turn, and the input end of described optical fiber is connected with described receiver;
Preferable, comprise that also position adjustment unit comprises: optics support, rotating mechanism and propulsion system, described optics generating unit branch is arranged on the described optics support, the output terminal of described rotating mechanism and described optics support Joint, make described optics support produce rotation, the input end of described rotating mechanism is connected with the input end of described propulsion system, for described rotating mechanism provides power;
Preferable, described optics produces part and is divided into: first optical module, and it is made up of described first concave mirror, the 3rd concave mirror;
Second optical module, it is made up of described transmitter, second concave mirror, the 4th concave mirror and receiver, described first optical module and described second optical module are arranged at the two ends of described optics support respectively, and the distance between described first optical module and described second optical module is between 0.3 meter to 20 meters;
Preferable, described rotating mechanism comprises: turning axle, bearing and gear drive, described gear drive comprises driving gear and follower gear, described follower gear is installed on the described turning axle, and be meshed with described driving gear, described bearing holder (housing, cover) is on described turning axle, and the input end of described rotating mechanism is the output terminal of turning axle;
Preferable, also comprising wheel box, the output shaft of described wheel box is connected with described driving gear, and the input end of described wheel box is connected with the output terminal of described propulsion system;
Preferable, also comprising wind indicator, described wind indicator is connected with described computing machine, and described computing machine is connected with the control end of described propulsion system, and described propulsion system are motor;
Preferable, also comprising first lens, it is arranged between described transmitter and described first plane mirror;
Preferable, the radius-of-curvature of described first concave mirror, second concave mirror, the 3rd concave mirror and the 4th concave mirror is between 20 centimetres to 500 centimetres;
Preferable, described first plane mirror and each concave mirror materials used are quartz or ultraviolet optics silica glass material, its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating;
Next provides a kind of long optical path air monitoring instrument, it is closed, comprises that optics produces part and signal processing, wherein, described optics generating unit branch is arranged in the obturator, and described obturator has a tested gas access and a tested gas vent;
Described optics generating unit branch comprises: transmitter, it is positioned at the described obturator outside, correspondingly on the sidewall of described obturator be provided with a plurality of prisms, one first prism wherein, receive the light that described transmitter sends, the light path that sees through the first prism light is provided with one second prism, the light path of light is provided with a prism after the described second prism total reflection, the light path of light is provided with one the 4th prism after the described prism total reflection, the light path of light is provided with one the 4th prism after the described prism total reflection, the light path of light is provided with the 2k prism after the total reflection of 2k-1 prism, be provided with a photelectric receiver in the described obturator outside and receive the light that sees through the 2k prism, wherein, k is a natural number, and more than or equal to 2;
Described signal processing comprises, the optical fiber of Lian Jieing, spectrometer, scanner, photodetector and a processor in regular turn, and the input end of described optical fiber links to each other with described photelectric receiver;
Preferable, be provided with clean air curtain in the described obturator.
The beneficial effects of the utility model are compared with the prior art, the utility model has been replaced the optical system of original two dispersions by integrated optical system, the life-span of total system is greatly improved, makes measured value truer owing to adopted this system of computer control to rotate;
Because this optical system adopts integrated design, overcomes the influence of traditional light that optical system produces to surrounding environment, from the working service aspect, only to install and carry out a position, debugging is oversimplified, and is easy to maintenance;
Owing to adopted above-mentioned technology, the utility model is simple in structure, long service life, and the accuracy of detection height can be used for online detection.
Description of drawings
Fig. 1 is the structure diagram of the utility model long optical path air monitoring instrument preferred embodiment one;
Fig. 2 is the structure diagram that the optics of the utility model long optical path air monitoring instrument preferred embodiments one produces part;
Fig. 3 is the structure diagram of the utility model long optical path air monitoring instrument preferred embodiments two.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
See also shown in Figure 1, the structure diagram of the utility model long optical path air monitoring instrument, comprise that optics produces part and signal processing, described optics produces part in order to produce the light path of enough light paths, it comprises first optical module 11 and second optical module 12, described signal processing is analyzed the physical features that receives light, draw the atmospheric environment situation, described signal processing comprises, in regular turn the optical fiber 21 of Lian Jieing, spectrometer 22, scanner 23, photodetector 24 and computing machine 25;
Also comprise: comprise that also position adjustment unit comprises: an optics support 31, one rotating mechanism and propulsion system, described optics generating unit branch is arranged on the described optics support 31, the output terminal of described rotating mechanism and described optics support 31 Joints, make described optics support 31 produce rotation, the input end of described rotating mechanism is connected with the output terminal of described propulsion system, for described rotating mechanism provides power, wherein, described rotating mechanism comprises: turning axle 321, bearing 322 and gear drive, described gear drive comprises driving gear 3231 and follower gear 3232, described follower gear 3232 is installed on the described turning axle 321, and be meshed with described driving gear 3231, described bearing 322 is enclosed within on the described turning axle 321, the input end of described rotating mechanism is the output terminal of turning axle 321, also comprise a wheel box 34, the output shaft of described wheel box 34 is connected with described driving gear 3231, the input end of described wheel box 34 is connected with the output terminal of described propulsion system, the utility model also comprises a wind indicator, described wind indicator is connected with described computing machine 25, described computing machine 25 is connected with the control end of described propulsion system, described propulsion system are motor, the direction parameter that computing machine 25 transmits by wind indicator is controlled optics support 31 rotation directions and rotational angle in the driven by motor position adjustment unit, makes measured value more approaching true.
See also shown in Figure 2ly, it is the structure diagram that the optics of the utility model long optical path air monitoring instrument preferred embodiments one produces part; It is open, described optics generating unit branch comprises: it sends ultraviolet light by xenon lamp transmitter 121, be provided with one first plane mirror 122 with the light path of described transmitter 121 emission light, also comprise first lens 123, it is arranged between described transmitter 121 and described first plane mirror 122, in order to optically focused, light path through first level crossing, 122 emission back light is provided with one first concave mirror 111, the light path of described first concave mirror, 111 reflection back light is provided with one second concave mirror 124, the light path of described second concave mirror, 124 reflection back light is provided with one the 3rd concave mirror 112, the 4th concave mirror 125 is arranged on the light path of described the 3rd concave mirror 112 reflection rays, the light path of described the 4th concave mirror 125 reflection back light is provided with a receiver 126, light is at first concave mirror 111 like this, repeatedly come back reflective between second concave mirror 124 and the 3rd concave mirror 112, make light path reach needed value (200 meters to 1000 meters), reflect light on the 4th concave mirror 125 by the 3rd concave mirror 112, by the 4th concave mirror 125 light is converged on the receiver 126 at last, this moment, this optical system was finished the task of this system, and the input end of the optical fiber 21 of described signal processing 2 is connected with described receiver 126 and handles; The radius-of-curvature of described first concave mirror 111, second concave mirror 124, the 3rd concave mirror 112 and the 4th concave mirror 125 is between 20 centimetres to 500 centimetres, described first plane mirror 122 and each concave mirror materials used are quartz or ultraviolet optics silica glass material, its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating; Wherein, described first optical module 11, it is made up of described first concave mirror 111, the 3rd concave mirror 112; Described second optical module 12, it is made up of described transmitter 121, second concave mirror 124, the 4th concave mirror 125 and receiver 126, described first optical module 11 and described second optical module 12 are arranged at the two ends of described optics support 31 respectively, and the distance between described first optical module 11 and described second optical module 12 is between 0.3 meter to 20 meters;
See also shown in Figure 3, it is the structure diagram of the utility model long optical path air monitoring instrument preferred embodiments two, it is enclosed, comprise that optics produces part 1 ' and signal processing 2 ', wherein, described optics produces part 1 ' and is arranged in the obturator 4 ', and described obturator 4 ' has a tested gas access 41 ' and a tested gas vent 42 ', is provided with clean air curtain 43 ' in it;
Described optics produces part 1 ' and comprising: a transmitter 11 ', it is a light source, be positioned at the described obturator 4 ' outside, correspondingly on the sidewall of described obturator 4 ' be provided with a plurality of prisms, first prism 12 ' wherein, receive the light that described transmitter 11 ' sends, the light path that sees through first prism, 12 ' light is provided with one second prism 13 ', the light path of light is provided with a prism 14 ' after the 13 ' total reflection of described second prism, the light path of light is provided with one the 4th prism 15 ' after the described prism 14 ' total reflection, the light path of light is provided with one the 4th prism 15 ' after the described prism 14 ' total reflection, the light path of light is provided with the 2k prism after the total reflection of 2k-1 prism, be provided with a photelectric receiver in described obturator 4 outsides and receive the light that sees through the 2k prism, come back reflective at the polylith prism of setting, finally make light path reach needed 200 meters～1000 meters, wherein, k is a natural number, and more than or equal to 2, the k value is big more, then the distance between the prism is near more relatively, just the length of described obturator 4 ' is more little, here k is as getting 6, then need 12 prisms altogether, promptly from described first prism to the, 12 prisms;
Described signal processing comprises, the optical fiber of Lian Jieing, spectrometer, scanner, photodetector and computing machine in regular turn, and the input end of described optical fiber links to each other with described photelectric receiver.
The above only is preferred embodiment of the present utility model, only is illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that the utility model claim is limited, revise, even equivalence, but all will fall in the protection domain of the present utility model.
Claims (11)
1, a kind of long optical path air monitoring instrument, it is open, comprise that optics produces part and signal processing, it is characterized in that: described optics generating unit branch comprises: transmitter, be provided with one first plane mirror with the light path of described transmitter emission light, light path through first level crossing emission back light is provided with one first concave mirror, the light path of described first concave mirror reflection back light is provided with one second concave mirror, the light path of described second concave mirror reflection back light is provided with one the 3rd concave mirror, the 4th concave mirror is arranged on the light path of described the 3rd concave mirror reflection ray, and the light path of described the 4th concave mirror reflection back light is provided with a receiver;
Described signal processing comprises, the optical fiber of Lian Jieing, spectrometer, scanner, photodetector and computing machine in regular turn, and described input end is connected with optical fiber with described receiver.
2, long optical path air monitoring instrument according to claim 1, it is characterized in that: comprise that also position adjustment unit comprises: optics support, rotating mechanism and propulsion system, described optics generating unit branch is arranged on the described optics support, the output terminal of described rotating mechanism and described optics support Joint, make described optics support produce rotation, the input end of described rotating mechanism is connected with the input end of described propulsion system, for described rotating mechanism provides power.
3, long optical path air monitoring instrument according to claim 2 is characterized in that: described optics produces part and is divided into: first optical module, and it is made up of described first concave mirror, the 3rd concave mirror;
Second optical module, it is made up of described transmitter, second concave mirror, the 4th concave mirror and receiver, described first optical module and described second optical module are arranged at the two ends of described optics support respectively, and the distance between described first optical module and described second optical module is between 0.3 meter to 20 meters.
4, long optical path air monitoring instrument according to claim 2, it is characterized in that: described rotating mechanism comprises: turning axle, bearing and gear drive, described gear drive comprises driving gear and follower gear, described follower gear is installed on the described turning axle, and be meshed with described driving gear, described bearing holder (housing, cover) is on described turning axle, and the input end of described rotating mechanism is the output terminal of turning axle.
5, long optical path air monitoring instrument according to claim 4 is characterized in that: also comprise wheel box, the output shaft of described wheel box is connected with described driving gear, and the input end of described wheel box is connected with the output terminal of described propulsion system.
6, long optical path air monitoring instrument according to claim 2, it is characterized in that: also comprise wind indicator, described wind indicator is connected with described computing machine, and described computing machine is connected with the control end of described propulsion system, and described propulsion system are motor.
7, long optical path air monitoring instrument according to claim 1 is characterized in that: also comprise first lens, it is arranged between described transmitter and described first plane mirror.
8, long optical path air monitoring instrument according to claim 1 is characterized in that: the radius-of-curvature of described first concave mirror, second concave mirror, the 3rd concave mirror and the 4th concave mirror is between 20 centimetres to 500 centimetres.
9, long optical path air monitoring instrument according to claim 1 is characterized in that: described first plane mirror and each concave mirror materials used are quartz or ultraviolet optics silica glass material, and its reflecting surface is gold-plated or silver-colored, simultaneously protective film coating.
10, a kind of long optical path air monitoring instrument, it is closed, comprises that optics produces part and signal processing, is characterized in that: wherein, described optics generating unit branch is arranged in the obturator, and described obturator has a tested gas access and a tested gas vent;
Described optics generating unit branch comprises: transmitter, it is positioned at the described obturator outside, correspondingly on the sidewall of described obturator be provided with a plurality of prisms, one first prism wherein, receive the light that described transmitter sends, the light path that sees through the first prism light is provided with one second prism, the light path of light is provided with a prism after the described second prism total reflection, the light path of light is provided with one the 4th prism after the described prism total reflection, the light path of light is provided with one the 4th prism after the described prism total reflection, the light path of light is provided with the 2k prism after the total reflection of 2k-1 prism, be provided with a photelectric receiver in the described obturator outside and receive the light that sees through the 2k prism, wherein, k is a natural number, and more than or equal to 2;
Described signal processing comprises, the optical fiber of Lian Jieing, spectrometer, scanner, photodetector and a processor in regular turn, and described input end links to each other with optical fiber with described photelectric receiver.
11, long optical path air monitoring instrument according to claim 10 is characterized in that: be provided with clean air curtain in the described obturator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201253652U CN201133899Y (en) | 2007-08-15 | 2007-08-15 | Long optical path atmospheric monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201253652U CN201133899Y (en) | 2007-08-15 | 2007-08-15 | Long optical path atmospheric monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133899Y true CN201133899Y (en) | 2008-10-15 |
Family
ID=40062168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201253652U Expired - Lifetime CN201133899Y (en) | 2007-08-15 | 2007-08-15 | Long optical path atmospheric monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133899Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226143B (en) * | 2007-08-15 | 2011-01-05 | 武汉市天虹仪表有限责任公司 | Long optical path air monitoring instrument |
| WO2011067599A1 (en) | 2009-12-01 | 2011-06-09 | University Of Leicester | Apparatus for measuring pollutants and method of operating the same |
-
2007
- 2007-08-15 CN CNU2007201253652U patent/CN201133899Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226143B (en) * | 2007-08-15 | 2011-01-05 | 武汉市天虹仪表有限责任公司 | Long optical path air monitoring instrument |
| WO2011067599A1 (en) | 2009-12-01 | 2011-06-09 | University Of Leicester | Apparatus for measuring pollutants and method of operating the same |
| US9228893B2 (en) | 2009-12-01 | 2016-01-05 | University Of Leicester | Apparatus for measuring pollutants and method of operating the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101226143B (en) | Long optical path air monitoring instrument | |
| CN103245614B (en) | Intelligent infrared methane gas detection device | |
| Wainner et al. | Handheld, battery-powered near-IR TDL sensor for stand-off detection of gas and vapor plumes | |
| CN103528797B (en) | A kind of new system detected for optical system eyeglass transmitance and reflectance | |
| CN104132911A (en) | Open type long optical distance CO and CH4 online testing instrument | |
| CN205317651U (en) | Portable long path cell | |
| CN101566551B (en) | Backscattering smoke analyzer | |
| CN105675532A (en) | Optical system of intermediate infrared laser radar | |
| CN102890067A (en) | Methanol gasoline quick detector based on near infrared rays | |
| CN103411921A (en) | Handheld gas sensing system based on optical remote measuring lenses | |
| CN102507150A (en) | On-line real-time detection device of optical parameters, color parameters and electrical parameters of light emitting diode (LED) lamp | |
| CN207396343U (en) | TDLAS boiler furnace gas two dimension concentration distribution detection devices based on automatic scanning system | |
| CN102621107A (en) | In-situ optical measurement device for aerospace material space environment irradiation measurement | |
| CN201133899Y (en) | Long optical path atmospheric monitoring instrument | |
| CN105606562A (en) | Near-infrared diffuse reflection automatic correcting probe | |
| CN202956337U (en) | Near-infrared methanol gasoline rapid detector | |
| CN1204391C (en) | Method and appaatus for single-laser-sourceharmonic remote sensing gas detection | |
| CN101936885B (en) | Optical fiber transceiver integrated air differential optical absorption spectroscopy (DOAS) measuring system | |
| CN107561008A (en) | A kind of device for VUV diffusing reflection plate BRDF feature measurements | |
| CN102346134A (en) | Reflective long optical path air monitoring instrument | |
| CN205679525U (en) | Mid-infrared laser radar optics system | |
| CN203101634U (en) | Laser radar device for environmental monitoring | |
| CN100485364C (en) | Optical parameter absolute value measuring device and method thereof | |
| CN112557269A (en) | Probing type receiving and transmitting integrated optical fiber dust concentration measuring device and method | |
| CN202230015U (en) | Air monitoring instrument capable of reflecting long optical path |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081015 Effective date of abandoning: 20070815 |