CN212904513U - Multi-component real-time optical remote measuring device for motor vehicle tail gas - Google Patents
Multi-component real-time optical remote measuring device for motor vehicle tail gas Download PDFInfo
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- CN212904513U CN212904513U CN202021975911.3U CN202021975911U CN212904513U CN 212904513 U CN212904513 U CN 212904513U CN 202021975911 U CN202021975911 U CN 202021975911U CN 212904513 U CN212904513 U CN 212904513U
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
- G01N2021/0314—Double pass, autocollimated path
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2021/1793—Remote sensing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N2021/3155—Measuring in two spectral ranges, e.g. UV and visible
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N2021/3513—Open path with an instrumental source
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
Abstract
The device comprises an emergent end, a reflecting end and a receiving end, wherein the emergent end comprises an infrared laser, a green laser, a beam combiner, a first hollow off-axis parabolic mirror and an ultraviolet light source, the reflecting end comprises a first reflecting mirror and a second reflecting mirror, and an included angle between the first reflecting mirror and the second reflecting mirror is 90 degrees; the receiving end comprises a second hollow off-axis parabolic mirror, an optical fiber, a spectrometer, a first beam splitter, a second beam splitter, an infrared receiver, a green light receiver, a signal acquisition and processing module and a red laser; the utility model discloses a scheme of infrared light, ultraviolet ray, green glow and ruddiness coaxial transmission can realize the concentration measurement of the motor vehicle exhaust of same time, same position, has guaranteed five kinds of real-time that detect the parameter, carries out concentration calculation for using the combustion equation and provides accurate data.
Description
Technical Field
The utility model belongs to motor vehicle pollution emission field, concretely relates to real-time optical remote measuring's of motor vehicle tail gas multicomponent device.
Background
With the gradual upgrade of the motor vehicle emission standard in China, the emission levels of various vehicles running on roads have great differences. The pollution of the tail gas emission of the motor vehicle to the environmental air quality is effectively reduced, and vehicles with high emission are discovered and treated, which is very necessary for improving the urban air quality condition.
At present, the main measures for controlling the pollution of the motor vehicle are annual inspection and daily road inspection and routing inspection of tail gas of the motor vehicle, but still have a plurality of problems in the actual detection process: the traditional detection method is contact detection, samples the exhaust pipe of the motor vehicle, and then analyzes by using a conventional instrument, so that the time and labor are wasted, the cost is high, the operation difficulty is high, and the purpose of screening the high-pollution vehicle is far from being achieved.
For CO and CO needing to be detected in tail gas of motor vehicle2The main available schemes include NDIR technology and TDLAS technology, where NDIR technology has long response time and short telemetry distance, and is not suitable for remote telemetry of vehicle exhaust. NO and HC, mainly the scheme that can use includes TDLAS technique and DOAS technique, and wherein the required intermediate infrared quantum cascade laser of TDLAS technique cost is very high, is unfavorable for the marketing popularization on a large scale of product.
In the prior art, the combination use of infrared tuning diode laser spectrum and ultraviolet differential absorption spectrum is partially adopted, and CO can be detected in real time2NO, HC and soot. However, the smoke is measured by using ultraviolet light, which does not meet the national standard (note that the technical requirement of JT/T506 and 2004 opaque smokemeter for the light source is that an incandescent lamp with the color temperature range of 2800K-3250K or a green light emitting diode with the spectral peak wavelength of 550 nm-570 nm), the ultraviolet light and the infrared light use a lens to carry out beam combination and beam splitting, the reflection effect of the prior art in the ultraviolet band, especially when the wavelength is less than 250nm, is very poor, and the application of the ultraviolet differential absorption method is not favorable. Or the light beams which are parallel to each other are used, so that the measurement of the parameters of the smoke mass at the same position cannot be realized, and the real-time performance is poor. Some uses are provided with a channelThe off-axis parabolic mirror of the hole, laser and ultraviolet light come and go with the optical axis, and the data of partial motor vehicle exhaust can not be measured due to the fact that the motor vehicle exhaust emission height is different. Some laser modules used need mid-infrared quantum cascade lasers in HC (3370nm) and NO (5363nm) to be measured, and are high in cost. Some rotating hexahedral mirrors used are moving devices, and instability is generated due to environmental changes in an actual use environment, so that measurement data are influenced. Some laser modules and aspheric lenses are high in cost because five aspheric collimating lenses are adopted to combine five laser beams and finally realize light path collimation through the off-axis parabolic collimating lens. Part of the used galvanometers are moving devices, and instability can be generated due to environmental changes in the actual using environment, so that the measured data are influenced. In summary, the prior art does not have the function of realizing on-site fast dimming.
SUMMERY OF THE UTILITY MODEL
In view of the above, one of the main objects of the present invention is to provide a device for multi-component real-time optical remote measurement of motor vehicle exhaust, so as to at least partially solve at least one of the above technical problems.
In order to achieve the above object, the present invention provides a multi-component real-time optical remote measuring device for motor vehicle exhaust, comprising an emitting end, a reflecting end and a receiving end, wherein,
the exit end comprises an infrared laser, a green laser, a beam combining mirror, a first hollow off-axis parabolic mirror and an ultraviolet light source, wherein ultraviolet light emitted by the ultraviolet light source is combined into combined light through the beam combining mirror, the ultraviolet light is emitted from the reflection surface of the first hollow off-axis parabolic mirror, infrared light is emitted from the infrared laser, and green light is emitted from the green laser;
the reflecting end comprises a first reflecting mirror and a second reflecting mirror, and an included angle between the first reflecting mirror and the second reflecting mirror is 90 degrees; the beam combining light entering the reflection end parallelly returns to the receiving end after passing through the first reflector and the second reflector;
the receiving end comprises a second hollow off-axis parabolic mirror, an optical fiber, a spectrometer, a first beam splitter, a second beam splitter, an infrared receiver, a green light receiver, a signal acquisition and processing module and a red laser;
ultraviolet light in the combined beam light reflected from the reflection end is reflected and focused to the focal position of the second hollow off-axis parabolic mirror through the reflection surface of the second hollow off-axis parabolic mirror and then is guided into the spectrometer through the optical fiber;
infrared light in the combined beam light passes through a central hole of the second hollow off-axis parabolic mirror, enters an infrared receiver through the first beam splitter and the second beam splitter, is converted into an electric signal, and then enters the signal acquisition and processing module;
green light in the combined beam light passes through a central hole of the second hollow off-axis parabolic mirror, then enters a green light receiver through the first beam splitter and the second beam splitter to be converted into an electric signal, and then enters the signal acquisition and processing module;
the red light emitted by the red laser is reflected by the first beam splitter and then emitted out through the central hole of the second hollow off-axis parabolic mirror, is emitted to the reflecting end along the light path of the combined light, deviates a certain distance and then parallelly returns to the emitting end along the light path of the combined light.
Based on above-mentioned technical scheme can know, the utility model discloses a device of real-time optical remote measurement of multicomponent of motor vehicle tail gas has one of following advantage at least for prior art:
1. for CO and CO needing to be detected2The optical telemetering device based on the TDLAS technology and the DOAS technology is adopted, and the optical telemetering device has the advantages of small equipment volume, high sensitivity, short response time, long telemetering distance and low cost;
2. by adopting the scheme of coaxial transmission of infrared light, ultraviolet light, green light and red light, the concentration measurement of the motor vehicle exhaust at the same time and the same position can be realized, the real-time performance of five detection parameters is ensured, and accurate data is provided for concentration calculation by using a combustion equation;
3. a red laser is added for quickly adjusting the light path, so that the field installation is simple and easy;
4. the emitting end and the receiving end are not coaxial, and the automobile exhaust monitoring device can be compatible with the monitoring of automobile exhaust with different emission heights.
Drawings
Fig. 1 is a schematic structural diagram of a device for multi-component real-time optical remote measurement of motor vehicle exhaust in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
The detection types specified in the technical requirements of JB/T11996-: CO, CO2NO, HC and opacity. Infrared laser based on TDLAS technology for measuring CO and CO2(ii) a An ultraviolet light source based on DOAS technology for measuring NO and HC; green light was used to measure opacity; the red light is used for light path adjustment; infrared, ultraviolet, green and red light are transmitted coaxially.
The utility model discloses a multi-component real-time optical remote measuring device for motor vehicle tail gas, which comprises an emergent end, a reflecting end and a receiving end, wherein,
the exit end comprises an infrared laser, a green laser, a beam combining mirror, a first hollow off-axis parabolic mirror and an ultraviolet light source, wherein ultraviolet light emitted by the ultraviolet light source is combined into combined light through the beam combining mirror, the ultraviolet light is emitted from the reflection surface of the first hollow off-axis parabolic mirror, infrared light is emitted from the infrared laser, and green light is emitted from the green laser;
the reflecting end comprises a first reflecting mirror and a second reflecting mirror, and an included angle between the first reflecting mirror and the second reflecting mirror is 90 degrees; the beam combining light entering the reflection end parallelly returns to the receiving end after passing through the first reflector and the second reflector;
the receiving end comprises a second hollow off-axis parabolic mirror, an optical fiber, a spectrometer, a first beam splitter, a second beam splitter, an infrared receiver, a green light receiver, a signal acquisition and processing module and a red laser;
ultraviolet light in the combined beam light reflected from the reflection end is reflected and focused to the focal position of the second hollow off-axis parabolic mirror through the reflection surface of the second hollow off-axis parabolic mirror and then is guided into the spectrometer through the optical fiber;
infrared light in the combined beam light passes through a central hole of the second hollow off-axis parabolic mirror, enters an infrared receiver through the first beam splitter and the second beam splitter, is converted into an electric signal, and then enters the signal acquisition and processing module;
green light in the combined beam light passes through a central hole of the second hollow off-axis parabolic mirror, then enters a green light receiver through the first beam splitter and the second beam splitter to be converted into an electric signal, and then enters the signal acquisition and processing module;
the red light emitted by the red laser is reflected by the first beam splitter and then emitted out through the central hole of the second hollow off-axis parabolic mirror, is emitted to the reflecting end along the light path of the combined light, deviates a certain distance and then parallelly returns to the emitting end along the light path of the combined light.
In some embodiments of the invention, the exit end and the receiving end are not coaxial.
In some embodiments of the invention, the ultraviolet light source is located at a focal position of the first hollow off-axis parabolic mirror.
In some embodiments of the present invention, the infrared laser and the green laser are driven by a first laser power module.
In some embodiments of the present invention, the uv light source is driven by a uv light source power module.
In some embodiments of the present invention, the red laser is driven by the second laser power module 6.
In some embodiments of the present invention, the laser wavelength emitted by the infrared laser is any one or more of 1578nm, 2004nm, 2327 nm.
In some embodiments of the present invention, the ultraviolet light source includes any one of a deuterium lamp and a xenon lamp.
In some embodiments of the present invention, the wavelength of the laser light emitted by the green laser is 550nm to 570 nm.
In some embodiments of the present invention, the laser wavelength emitted by the red laser is 620nm to 760 nm.
The technical solution of the present invention is further explained by the following specific embodiments with reference to the attached drawings. It should be noted that the following specific examples are only illustrative, and the scope of the present invention is not limited thereto.
As shown in fig. 1, the device for multicomponent real-time optical telemetry of motor vehicle exhaust according to the present embodiment is schematically configured, and the device includes an exit end 20, a reflection end 21, and a receiving end 22.
The emergent end 20 consists of a first laser power supply module 18, an infrared laser 19, a green laser 17, a beam combiner 16, a first hollow off-axis parabolic mirror 15, an ultraviolet light source power supply module 13 and an ultraviolet light source 14. The first laser power supply module 18 is used for driving the infrared laser 19 and the green laser 17, infrared light emitted by the infrared laser 19 and green light emitted by the green laser 17 are combined into a beam of light through the beam combining mirror 16, and the beam of light is emitted through a central hole of the first hollow off-axis parabolic mirror 15. The ultraviolet light source power module 13 is used for driving an ultraviolet light source 14, ultraviolet light emitted by the ultraviolet light source 14 is emitted through a reflecting surface of the first hollow off-axis parabolic mirror 15, the ultraviolet light source 14 is located at a focus position of the first hollow off-axis parabolic mirror 15, and the emitted light is parallel light. Thereby, the infrared light, the ultraviolet light, and the green light are completely combined and emitted from the emission end 20.
The reflective end 21 is composed of a first reflector 12 and a second reflector 11. The first reflector 12 and the second reflector 11 form a 90 ° angle therebetween to form a right-angle reflector, which is used to deflect the combined light emitted from the emitting end 20 for a certain distance and then return the combined light to the receiving end 22 in parallel, and simultaneously deflect the red light emitted from the receiving end 22 for a certain distance and then return the red light to the emitting end 20 in parallel.
The receiving end 22 consists of a second hollow off-axis parabolic mirror 10, an optical fiber 8, a spectrometer 9, a first beam splitter 5, a second beam splitter 2, an infrared receiver 1, a green light receiver 4, a signal acquisition and processing module 3, a second laser power module 6 and a red laser 7. Infrared light, ultraviolet light, and infrared light reflected back by the reflective end 21And combining beams of green light, wherein ultraviolet light is reflected by a reflecting surface of the second hollow off-axis parabolic mirror 10, is focused to the focal position of the second hollow off-axis parabolic mirror 10, is guided into a spectrometer 9 through an optical fiber 8, and NO and HC are calculated. Infrared light passes through a central hole of the second hollow off-axis parabolic mirror 10, passes through the first beam splitter 5 and the second beam splitter 2, enters the infrared receiver 1, is converted into an electric signal, and then passes through the signal acquisition and processing module 3 to calculate CO and CO2. The green light passes through a central hole of the second hollow off-axis parabolic mirror 10, passes through the first beam splitter 5 and the second beam splitter 2, enters the green light receiver 4, is converted into an electric signal, and then passes through the signal acquisition and processing module 3 to calculate the opacity. The second laser power supply module 6 is used for driving the red laser 7, red light emitted by the red laser 7 is emitted through a central hole of the second hollow off-axis parabolic mirror 10 after being reflected by the first beam splitter 5, the red light is emitted to the reflection end 21 along a light path of the combined light, the red light deviates a certain distance and then returns to the emission end 20 along the light path of the combined light in parallel, white paper is placed in the front position of the first hollow off-axis parabolic mirror 15, the red light and green light are overlapped, namely, light path alignment is completed, the function of rapid light path adjustment is realized, the red laser 7 can be closed after the light path alignment work is completed, and therefore the vehicle operation is not influenced.
The emitting end 20 and the receiving end 22 are not coaxial and have a certain distance, and are used for realizing the monitoring of the motor vehicle exhaust compatible with different emission heights.
The infrared laser 19 is 1578nm laser, and can measure CO and CO simultaneously2The device has the advantages of small volume and low cost. The ultraviolet light source 14 is a deuterium lamp, which can absorb NO and HC at the wavelength of 200-250nm, and has the advantages of strong ultraviolet band energy, smooth spectrum, etc. According to the technical requirements of JT/T506 and 2004 opaque smokemeters on light sources, namely an incandescent lamp with the color temperature range of 2800K-3250K or a green light emitting diode with the spectral peak wavelength of 550 nm-570 nm, the green laser 17 is selected to be a 555nm laser. The visible light red light wave band is 620 nm-760 nm. The red laser 7 is a 650nm laser.
Furthermore, the above definitions of the various elements and methods are not limited to the particular structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by one of ordinary skill in the art, for example:
(1) infrared laser 19, 2004nm infrared laser selected for CO measurement2A2327 nm infrared laser was selected for CO measurement. And other lasers having wavelengths with distinct absorption peaks.
(2) And the ultraviolet light source 14 selects a flashing xenon lamp.
(3) The green laser 17 is a laser having any wavelength selected from a wavelength range of 550nm to 570 nm.
(4) The red laser 7 is a laser having any wavelength in a wavelength range of 620nm to 760nm in a visible light red band.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the various elements are not limited to the specific structures, shapes or modes mentioned in the embodiments, and those skilled in the art may easily modify or replace them, for example:
(1) directional phrases used in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., refer only to the orientation of the drawings and are not intended to limit the scope of the present disclosure;
(2) the embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e. technical features in different embodiments may be freely combined to form further embodiments.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A multi-component real-time optical telemetering device for motor vehicle tail gas comprises an emergent end (20), a reflecting end (21) and a receiving end (22),
the exit end (20) comprises an infrared laser (19), a green laser (17), a beam combining mirror (16), a first hollow off-axis parabolic mirror (15) and an ultraviolet light source (14), wherein ultraviolet light emitted by the ultraviolet light source (14) is combined into combined light through the ultraviolet light emitted by a reflecting surface of the first hollow off-axis parabolic mirror (15), infrared light emitted by the infrared laser (19) and green light emitted by the green laser (17) through the beam combining mirror (16), and the combined light is emitted out through a central hole of the first hollow off-axis parabolic mirror (15) and enters the reflecting end (21);
the reflecting end (21) comprises a first reflecting mirror (12) and a second reflecting mirror (11), and an included angle between the first reflecting mirror (12) and the second reflecting mirror (11) is 90 degrees; the combined beam entering the reflection end passes through the first reflector (12) and the second reflector (11) and then returns to the receiving end (22) in parallel;
the receiving end (22) comprises a second hollow off-axis parabolic mirror (10), an optical fiber (8), a spectrometer (9), a first beam splitter (5), a second beam splitter (2), an infrared receiver (1), a green light receiver (4), a signal acquisition and processing module (3) and a red laser (7);
ultraviolet light in the combined beam light reflected from the reflection end (21) is reflected and focused to the focal position of the second hollow off-axis parabolic mirror (10) through the reflection surface of the second hollow off-axis parabolic mirror (10), and then is guided into the spectrometer (9) through the optical fiber (8);
infrared light in the combined beam light passes through a center hole of the second hollow off-axis parabolic mirror (10), then enters the infrared receiver (1) through the first beam splitter (5) and the second beam splitter (2) to be converted into an electric signal, and then enters the signal acquisition and processing module (3);
green light in the combined beam light passes through a central hole of a second hollow off-axis parabolic mirror (10), then enters a green light receiver (4) through a first beam splitter (5) and a second beam splitter (2) to be converted into an electric signal, and then enters a signal acquisition and processing module (3);
the red light emitted by the red laser (7) is reflected by the first beam splitter (5), then is emitted out through a central hole of the second hollow off-axis parabolic mirror (10), is emitted to the reflection end (21) along the light path of the combined light, deviates a certain distance, and then is parallelly returned to the emission end (20) along the light path of the combined light.
2. The apparatus of claim 1,
the exit end (20) and the receiving end (22) are not coaxial.
3. The apparatus of claim 1,
the ultraviolet light source (14) is positioned at the focal position of the first hollow off-axis parabolic mirror (15).
4. The apparatus of claim 1,
the infrared laser (19) and the green laser (17) are driven by a first laser power module (18).
5. The apparatus of claim 1,
the ultraviolet light source (14) is driven by an ultraviolet light source power module (13).
6. The apparatus of claim 1,
the red laser (7) is driven by a second laser power module (6).
7. The apparatus of claim 1,
the laser wavelength emitted by the infrared laser (19) is any one or more of 1578nm, 2004nm and 2327 nm.
8. The apparatus of claim 1,
the ultraviolet light source (14) comprises any one of a deuterium lamp and a xenon lamp.
9. The apparatus of claim 1,
the laser wavelength emitted by the green laser (17) is 550 nm-570 nm.
10. The apparatus of claim 1,
the laser wavelength emitted by the red laser (7) is 620 nm-760 nm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200689A (en) * | 2021-12-16 | 2022-03-18 | 安徽庆宇光电科技有限公司 | Light path debugging method and system for motor vehicle pollution detection equipment |
| CN114216874A (en) * | 2021-12-19 | 2022-03-22 | 安徽庆宇光电科技有限公司 | Long-optical-path infrared laser optical system |
-
2020
- 2020-09-10 CN CN202021975911.3U patent/CN212904513U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200689A (en) * | 2021-12-16 | 2022-03-18 | 安徽庆宇光电科技有限公司 | Light path debugging method and system for motor vehicle pollution detection equipment |
| CN114216874A (en) * | 2021-12-19 | 2022-03-22 | 安徽庆宇光电科技有限公司 | Long-optical-path infrared laser optical system |
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