CN108152207A - Telemetering motor vehicle tail system - Google Patents
Telemetering motor vehicle tail system Download PDFInfo
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- CN108152207A CN108152207A CN201810225733.3A CN201810225733A CN108152207A CN 108152207 A CN108152207 A CN 108152207A CN 201810225733 A CN201810225733 A CN 201810225733A CN 108152207 A CN108152207 A CN 108152207A
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- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
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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
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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
- G01N21/3151—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 using two sources of radiation of different wavelengths
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- Spectroscopy & Molecular Physics (AREA)
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- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention provides a kind of telemetering motor vehicle tail systems, belong to source of atmospheric pollution monitoring device.The problem of it solves existing motor-vehicle tail-gas and is difficult to monitor, and monitoring device detection range is small, arrangement trouble, debugging is complicated.The present invention has laser emitting module and ultraviolet emission module, the data of CH, NO, CO and CO2 can be monitored simultaneously, monitoring range light, the measuring cell that the present invention is formed using integrated telemetry host computer and optical reflection unit simultaneously is as monitoring point, arrangement is simple, during debugging, it is only necessary to debug optical reflection unit.
Description
Technical field
The present invention relates to tail gas domain of telemetry more particularly to a kind of telemetering motor vehicle tail systems.
Background technology
Tail gas pollution of motor-driven vehicle has become an important factor for influence China's urban air-quality, with vehicle guaranteeding organic quantity
Continue to increase and the publication of 6 years inner exhaust gas inspection-free policies of new car, motor-vehicle tail-gas remote sensoring technology become promoted vehicle tail
Gas discharges the important means of ability to supervise and efficiency.《The anti-therapy of People's Republic of China's atmosphere pollution》Clear stipulaties are from 2016
It rises in year January 1, the real-time remote exhaust emission detection of motor vehicle that can be travelled in road pavement in the case where not influencing traffic.In recent years
Come, the provincial standard of telemetering motor vehicle tail has been put into effect in each place in succession, 2017《Exhaust emission limit value and measurement side
Method (remote sensing detection method)》Exposure draft is released, and telemetering motor vehicle tail method necessarily becomes a kind of conventional exhaust emission
Monitoring means.
The prior art discloses the detection that vehicle exhaust (CH, CO, CO2 and NO) is carried out using two modules, such as patent
US005319199 surveys CO, CO2, CH using NDIR (non-dispersive infrared) module, is detected with ultraviolet module
NOx；If 1260571 C of patent CN are using laser module survey CO, CO2, HC, NO are surveyed with ultraviolet module；Using the side of two modules
Case, integrated system is larger, of high cost using two sets of light path systems；Meanwhile it is dimmed during in-site installation cumbersome；In addition, test
Before, each module is required to be demarcated, complicated during operating cost.
Invention content
The purpose of the present invention is being directed to existing technology, there are the above problems, it is proposed that a kind of rational in infrastructure, applicability is wide
Telemetering motor vehicle tail system.
The purpose of the present invention can be realized by following technical proposal：A kind of telemetering motor vehicle tail system, including setting
Road one side telemetry host computer and be arranged on the optical reflection unit of road another side, the telemetry host computer further comprises：
Light emitting unit is detected, the detection light emitting unit includes laser emitting module and ultraviolet emission module；
Detection unit, the detection unit is included by off axis paraboloidal mirror and the y-type optical fiber for being used for transmission detection light, described
Off axis paraboloidal mirror and optical reflection unit formed open measuring cell for as detect motor-vehicle tail-gas monitoring point, off axis
Through-hole is offered on paraboloidal mirror, the laser that the laser emitting module is sent out is entered by the through-hole in measuring cell, described
The ultraviolet light that ultraviolet emission module is sent out is entered after being collimated after y-type optical fiber by off axis paraboloidal mirror in measuring cell；
Data processing unit, the data processing unit include spectrometer and photoelectric detector, and the spectrometer is used to divide
Analysis processing measuring cell in it is return go out ultraviolet light, the photoelectric detector be used for analyze and process in measuring cell it is return go out laser.
Preferably, laser and ultraviolet light that laser in measuring cell is parallel with the collimation ultraviolet light in measuring cell, return
It is entered after off axis paraboloidal mirror converges in same y-type optical fiber.
Preferably, being provided with beam splitting device between data processing unit and y-type optical fiber, the beam splitting device is used for Y
The return light separation of mixing that type optical fiber transmits out.
Preferably, the collimation ultraviolet light in laser and measuring cell in measuring cell is not parallel, return laser pass through from
It is received after axis paraboloidal mirror convergence by photoelectric detector, return ultraviolet light is connect after off axis paraboloidal mirror converges by spectrometer
It receives.
Preferably, the effective length of measuring cell is 4 meters, the alternate angle between collimation ultraviolet light and laser in measuring cell
Degree is at -0.5 °~0.5 °.
Preferably, it is provided with collimation lens between the laser emitting module and off axis paraboloidal mirror.
Preferably, further including aiming module, the aiming module includes an indicator light transmitting terminal and a light splitting piece,
The light splitting piece is located at laser in the light path between collimation lens and off axis paraboloidal mirror, and the light splitting piece emits indicator light
The instruction light sent out is held to be introduced on laser optical path.
Preferably, the optical reflection unit is corner reflector.
Preferably, the optical reflection unit is pyramid corner angle.
It tests the speed and Vehicle License Plate Recognition System preferably, further including, it is described to test the speed and Vehicle License Plate Recognition System is motor-driven for measuring
Vehicle passes through the speed of measuring cell and photographing to record to the motor vehicle.
Compared with prior art, the present invention has following technological merit：
1st, the present invention emits detection light by laser and ultraviolet two transmitting modules, detection range cover CO, CO2, HC and
NO, applicability are wide.
2nd, two detection public measuring cells of optical transmitter module measure in the present invention, at low cost, in-site installation letter
Single, zeroing is convenient, easy to operate.
3rd, in the present invention, detection light emitting unit and off axis paraboloidal mirror in telemetry host computer are an entirety, inside
Detection light light path adjust, at the scene during mounting and adjusting, it is only necessary to adjust entire telemetry host computer and optical reflection unit
The in-site installation of system can be completed, the mode of light path adjustment is simple, and the used time is short.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is the structure diagram of one embodiment of the invention.
Fig. 3 is another embodiment of the present invention structure diagram.
Specific embodiment
The following is specific embodiments of the present invention and with reference to attached drawing, technical scheme of the present invention is further described,
But the present invention is not limited to these embodiments.
Embodiment one
With reference to figure 1, Fig. 1 shows one embodiment of the invention, a kind of telemetering motor vehicle tail system, including being arranged on
The telemetry host computer 1 on road one side and the optical reflection unit for being arranged on road another side, optical reflection unit can be corner reflector 2
Or pyramid corner angle, the telemetry host computer 1 further comprise：
Light emitting unit is detected, the detection light emitting unit includes laser emitting module 102 and ultraviolet emission module
110, wherein, the absorption line of optical maser wavelength covering CH and NO that laser emitting module 102 is sent out, ultraviolet emission module 110 is sent out
The absorption line of ultraviolet wavelength covering CO and CO2 gone out；
Detection unit, the detection unit are included by off axis paraboloidal mirror 105 and the y-type optical fiber for being used for transmission detection light
106, the off axis paraboloidal mirror 105 and optical reflection unit (such as corner reflector 2) form open measuring cell and are used for conduct
The monitoring point of motor-vehicle tail-gas is detected, through-hole is offered on off axis paraboloidal mirror 105, what the laser emitting module 102 was sent out
Laser is entered by the through-hole in measuring cell, and the ultraviolet light that the ultraviolet emission module 110 is sent out is after y-type optical fiber 106
It is entered in measuring cell after being collimated by off axis paraboloidal mirror 105；
Data processing unit, the data processing unit include spectrometer 109 and photoelectric detector 108, the spectrometer
109 for analyze and process in measuring cell it is return go out ultraviolet light, the photoelectric detector 108 returns for analyzing and processing in measuring cell
The laser returned out.
In the present embodiment, the ultraviolet light that the detection light and ultraviolet emission module 110 that laser emitting module 102 is sent out are sent out
An open measuring cell is shared, i.e., can measure to obtain CH, NO, CO, CO2 in motor-vehicle tail-gas simultaneously by a monitoring point
Content ingredient, accuracy is high, and the cost of system equipment is low.
During detection, laser is by the way that, by being injected into measuring cell, laser passes through monitoring point on off axis paraboloidal mirror 105
It is exactly after measuring cell, is reflected by corner reflector 2, return laser again passes through monitoring point and carried out by off axis paraboloidal mirror 105
It converges and is finally received by photoelectric detector 108.Ultraviolet light is injected into after being transmitted by Transmission Fibers in measuring cell, across prison
Before measuring point, ultraviolet light is mapped to first on off axis paraboloidal mirror 105, is collimated by off axis paraboloidal mirror 105, the purple after collimation
Outer light is equally reflected after passing through monitoring point by corner reflector 2, and return ultraviolet light is again passed through behind monitoring point by throwing off axis
Object plane mirror 105 is converged and is finally received by spectrometer 109.
In order to ensure that laser is return by predetermined design light path after corner reflector 2, needed before laser enters measuring cell
Laser is collimated, in the present embodiment, standard is provided between laser emitting module 102 and off axis paraboloidal mirror 105
Straight lens 103, laser are injected by through-hole in measuring cell after collimation lens 103.
In the present embodiment, collimation laser in measuring cell is parallel, return laser and return purple with collimation ultraviolet light
Outer light has common focus after being converged after the convergence of off axis paraboloidal mirror 105, the receiving terminal of y-type optical fiber 106 is arranged on
In the focus, the return light of mixing is entered by the focus in y-type optical fiber 106 to be transmitted by y-type optical fiber 106.
The wavelength of ultraviolet light and laser has overlapped part, when being handled into data processing unit, needs
The return light of mixing is detached.The present embodiment is detached using a beam splitting device 107 to mixing return light, is detached
Ultraviolet light afterwards is handled by 109 reception of spectrometer, and the laser after separation is handled by 108 reception of photoelectric detector.
In order to facilitate the mounting and adjusting of system, also tool aims at module and includes one there are one module is aimed in the present embodiment
Indicator light transmitting terminal 101 and a light splitting piece 104, light splitting piece 104 between collimation lens 103 and off axis paraboloidal mirror 105,
Light splitting piece 104 is located in the light path of laser, and the instruction light that indicator light transmitting terminal 101 is sent out is by laterally injecting and by light splitting piece
Change optical path direction after 104 refractions, the instruction light changed after optical path direction is identical with the optical path direction of collimation laser, is penetrated by through-hole
Enter into measuring cell, got on corner reflector 2 across monitoring point, it can be quickly diagonal according to instruction modulating signal on corner reflector 2
Speculum 2 is adjusted so that this system being capable of money installation dropping place.It is to be herein pointed out light splitting piece 104 generally uses two
To Look mirror, laser can be to pass through light splitting piece 104 without changing direction, thus be arranged in the light path of laser will not for light splitting piece 104
Change the optical path direction of laser.
Further, in the present embodiment, mating being additionally provided with is tested the speed and Vehicle License Plate Recognition System 3, described to test the speed and car plate
Identifying system 3 is for measuring motor vehicle by the speed of measuring cell and photographing to record to the motor vehicle, hence for super
The motor vehicle of mark discharge carries out record punishment.
Embodiment two
With reference to figure 2, Fig. 2 shows another embodiment of the present invention, the difference between this embodiment and the first embodiment lies in, at this
In embodiment, collimation laser and collimation ultraviolet light in measuring cell are not parallel, such as on four meters of wide roads, and collimation swashs
Stagger angle between light and collimation ultraviolet light is between -0.5 ° to 0.5 °.By off axis paraboloidal mirror after collimation laser is return
105 converge in a focus, are converged in another focus by off axis paraboloidal mirror 105 after collimation ultraviolet light is return,
The return light of the two is separated.Therefore, the present embodiment does not need to detach return light relative to embodiment one, directly logical
It crosses photoelectric detector 108 and receives laser, ultraviolet light is received by spectrometer 109.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of telemetering motor vehicle tail system, which is characterized in that including being arranged on the telemetry host computer on road one side and being arranged on
The optical reflection unit of road another side, the telemetry host computer further comprise：
Light emitting unit is detected, the detection light emitting unit includes laser emitting module and ultraviolet emission module；
Detection unit, the detection unit is included by off axis paraboloidal mirror and the y-type optical fiber for being used for transmission detection light, described off-axis
Paraboloidal mirror and optical reflection unit form open measuring cell for the monitoring point as detection motor-vehicle tail-gas, off-axis parabolic
Through-hole is offered on the mirror of face, the laser that the laser emitting module is sent out is entered by the through-hole in measuring cell, described ultraviolet
The ultraviolet light that transmitting module is sent out is entered after being collimated after y-type optical fiber by off axis paraboloidal mirror in measuring cell；
Data processing unit, the data processing unit include spectrometer and photoelectric detector, and the spectrometer is at analysis
Manage measuring cell in it is return go out ultraviolet light, the photoelectric detector be used for analyze and process in measuring cell it is return go out laser.
2. telemetering motor vehicle tail system according to claim 1, which is characterized in that laser and measuring cell in measuring cell
Interior collimation ultraviolet light is parallel, and return laser and ultraviolet light enter same y-type optical fiber after off axis paraboloidal mirror converges
It is interior.
3. telemetering motor vehicle tail system according to claim 2, which is characterized in that data processing unit and y-type optical fiber
Between be provided with beam splitting device, the beam splitting device is used for the return light separation of the mixing for transmitting out y-type optical fiber.
4. telemetering motor vehicle tail system according to claim 1, which is characterized in that laser and measuring cell in measuring cell
Interior collimation ultraviolet light is not parallel, and return laser is received after off axis paraboloidal mirror converges by photoelectric detector, return
Ultraviolet light is received after off axis paraboloidal mirror converges by spectrometer.
5. telemetering motor vehicle tail system according to claim 4, which is characterized in that the effective length of measuring cell is 4 meters,
The stagger angle between collimation ultraviolet light and laser in measuring cell is at -0.5 °~0.5 °.
6. telemetering motor vehicle tail system according to claim 1, which is characterized in that the laser emitting module and off-axis
Collimation lens is provided between paraboloidal mirror.
7. telemetering motor vehicle tail system according to claim 6, which is characterized in that aiming module is further included, it is described to take aim at
Quasi-mode block includes an indicator light transmitting terminal and a light splitting piece, and the light splitting piece is located at laser in collimation lens and off-axis parabolic
In light path between the mirror of face, the instruction light that indicator light transmitting terminal is sent out is introduced on laser optical path by the light splitting piece.
8. telemetering motor vehicle tail system according to claim 1, which is characterized in that the optical reflection unit is anti-for angle
Penetrate mirror.
9. telemetering motor vehicle tail system according to claim 1, which is characterized in that the optical reflection unit is pyramid
Corner angle.
10. telemetering motor vehicle tail system according to claim 1, which is characterized in that further include and test the speed and Car license recognition
System, it is described to test the speed and Vehicle License Plate Recognition System is for measuring motor vehicle by the speed of measuring cell and clapping to the motor vehicle
According to record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225733.3A CN108152207A (en) | 2018-03-19 | 2018-03-19 | Telemetering motor vehicle tail system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225733.3A CN108152207A (en) | 2018-03-19 | 2018-03-19 | Telemetering motor vehicle tail system |
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| CN108152207A true CN108152207A (en) | 2018-06-12 |
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ID=62456164
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|---|---|---|---|
| CN201810225733.3A Pending CN108152207A (en) | 2018-03-19 | 2018-03-19 | Telemetering motor vehicle tail system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749561A (en) * | 2019-12-24 | 2020-02-04 | 湖南轩源环保科技有限公司 | Mobile motor vehicle tail gas remote measuring system |
| CN112748083A (en) * | 2021-01-04 | 2021-05-04 | 安徽中科华仪科技有限公司 | Optical system for remote sensing detection of motor vehicle exhaust |
| CN114270176A (en) * | 2019-09-11 | 2022-04-01 | 松下知识产权经营株式会社 | Moisture sensing device |
| CN115372313A (en) * | 2022-10-21 | 2022-11-22 | 合肥金星智控科技股份有限公司 | Detection light path and detection system based on TDLAS technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114270176A (en) * | 2019-09-11 | 2022-04-01 | 松下知识产权经营株式会社 | Moisture sensing device |
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| CN115372313A (en) * | 2022-10-21 | 2022-11-22 | 合肥金星智控科技股份有限公司 | Detection light path and detection system based on TDLAS technology |
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Application publication date: 20180612 |