CN106885786A - Telemetering motor vehicle tail system - Google Patents
Telemetering motor vehicle tail system Download PDFInfo
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- CN106885786A CN106885786A CN201710228128.7A CN201710228128A CN106885786A CN 106885786 A CN106885786 A CN 106885786A CN 201710228128 A CN201710228128 A CN 201710228128A CN 106885786 A CN106885786 A CN 106885786A
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- 230000003287 optical effect Effects 0.000 claims description 57
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 21
- 229910052805 deuterium Inorganic materials 0.000 claims description 21
- 238000004566 IR spectroscopy Methods 0.000 claims description 12
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
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- 238000004891 communication Methods 0.000 claims description 7
- 230000002123 temporal effect Effects 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
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- 230000035945 sensitivity Effects 0.000 abstract description 4
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- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- 238000004611 spectroscopical analysis Methods 0.000 description 1
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- 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
- G01N2021/3129—Determining multicomponents by multiwavelength 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
- G01N21/314—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
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
- G01N2201/0612—Laser diodes
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Abstract
The invention discloses a kind of telemetering motor vehicle tail system, vehicle on each track is limited using barrier strips to travel, light reflecting device is arranged on track, infrared light emission and reception device, ultraviolet light emission and reception device is coordinated to realize the emission measuring to vehicle on each track, measurement data is sent to master control box, and wireless router and onboard wireless module composition car networking in vehicle are set in primary control box, with collection vehicle speed, acceleration information.The present invention has the advantages that measurement range big, measurement sensitivity and accuracy is high, long service life, and will not receive vehicle parallel, the influence overtaken other vehicles.
Description
Technical field
The present invention relates to tail gas telemetry system field, specifically a kind of telemetering motor vehicle tail system.
Background technology
Motor vehicles give people to provide interests true, such as speed and convenience, but city because to motor vehicle
The cost paid of dependence it is also increasing, the infringement and pollution that especially motor vehicle exhaust is caused to environment have reached ten
Divide serious degree.
Motor vehicle exhaust discharge is made up of three parts：Revealed by the engine exhaust gas of blast pipe discharge, crankcase
The boil-off gas of the fuel system such as gas and fuel tank and vaporizer, its species reaches 200 kinds at most.Wherein to environmental hazard most
Big has CO, CO2, NOX（Oxynitrides）And HC（Hydrocarbon）.Therefore, it is necessary in motor vehicles actual travel ring
This several gas in tail gas are measured in border.
At present, the existing system based on spectroscopy measurements motor vehicle exhaust, such as patent No. 200910241681.X is disclosed
Multilane motor vehicle exhaust remote measuring device, it is using being distributed in infrared emission and reception pipe, the ultraviolet emission of both sides of the road
The spectral signal through tail gas is measured with reception pipe, and then inverting obtains CO, CO2, NO in tail gasXWith the concentration information of HC.
This metering system is distributed across both sides of the road due to infrared emission and reception pipe, ultraviolet emission and reception pipe, when there is motor vehicle
During parallel running, the tail gas for measuring is the tail gas of multiple parallel vehicles, it is impossible to respectively had in the tail gas for obtaining each motor vehicles
The concentration information of gas is done harm to, and the use of this metering system is distributed in the light emitting devices of both sides of the road, optical pickup apparatus and matches somebody with somebody
Timer measuring vehicle speed information is closed, for having vehicle parallel and when there is cut-in situation, cannot equally know each vehicle
Velocity information, there is limitation.
A kind of Design of Vehicle Tail Gas Analyzer disclosed in patent No. 201521009521.X, it is by light source and gas detector
Installed in track top, and retroreflecting device is set for reflected light on carriageway surfacing surface, although this metering system
The vehicle that can be directed on track is detected, will not disturbed by parallel vehicles, but some vehicles are complete when vehicle cut-ins
Portion or part are located at when in same track, and the metering system cannot accurately measure tail gas, and be put back into road surface coated cloth
When returning reflection unit, due to that cannot limit that vehicle is parallel, overtake other vehicles, there is a problem of that vehicle rolls retroreflecting device, easily lead
Cause the abrasion of retroreflecting device, damage, influence the accuracy of measurement.
The content of the invention is motor-driven to solve prior art it is an object of the invention to provide a kind of telemetering motor vehicle tail system
What tail gas remote mode was present is not used to parallel many vehicles or cut-in situation, the problem of measurement accuracy difference.
In order to achieve the above object, the technical solution adopted in the present invention is：
Telemetering motor vehicle tail system, it is characterised in that：Including：
Barrier strips, it separates solid line position between being arranged on adjacent lane in the same direction on road, and higher than pavement of road, to replace
Separate solid line on road surface, limit vehicle lane change on each track so that vehicle is travelled in order；
Multiple light reflecting devices, its one-to-one corresponding is arranged on away from two side positions on each track, and higher than pavement of road, and light
Reflection unit is highly less than vehicle chassis extreme lower position highly；
Multiple infrared light emissions and reception device, its one-to-one corresponding are arranged on light reflecting device top in each track, wherein red
Outer light emitting devices sends infrared light to light reflecting device, is received by infrared optical pickup apparatus after being reflected through light reflecting device；
Multiple ultraviolet light emissions and reception device, it corresponds with infrared light emission and reception device and becomes one, and point
Light reflecting device top in each track is not arranged on, and wherein ultraviolet light emission device sends ultraviolet light to light reflecting device, warp
Received by ultraviolet optical pickup apparatus after light reflecting device reflection；
Multiple cameras, its one-to-one corresponding is arranged on each track top, by the licence plate of vehicle on camera collection correspondence track
Image, and record acquisition time；
Master control box, it includes master controller, wireless router, data collecting card, image pick-up card, wherein data collecting card,
Image pick-up card output end is respectively connected to the FPDP of master controller, and wireless router accesses the PORT COM of master controller,
The camera is connected with the input of image pick-up card, sent into after the License Plate Image shot by image pick-up card acquisition camera
Master controller, the infrared optical pickup apparatus, ultraviolet optical pickup apparatus are connected with the input of data collecting card respectively, by data
The ultraviolet spectra signal that capture card gathers the infrared spectroscopy signals of infrared optical pickup apparatus reception, ultraviolet optical pickup apparatus are received is simultaneously
Feeding master controller, the master controller is communicated with external server by wireless router and is connected；
Onboard wireless module, it is arranged in the vehicle travelled on track and accesses the PORT COM of MCU in vehicle, when vehicle row
When driving into the communication context of wireless router in master control box, MCU accesses wireless router by onboard wireless module, by nothing
Line router connects and composes car networking with MCU communications in each vehicle respectively, and MCU sends out to wireless router respectively in each vehicle
The license plate information in speed information, acceleration information, corresponding temporal information and the default write-in MCU of itself is given, by without circuit
The speed information of each vehicle, acceleration information, temporal information and license plate information are sent to master controller by device；
When vehicle is travelled to infrared light emission and reception device, ultraviolet light emission and reception device operating position, by infrared light
Emitter sends infrared light to the tail gas that vehicle is produced, and sends ultraviolet from ultraviolet light emission device to the tail gas that vehicle is produced
Light, while shoot the License Plate Image of the vehicle by camera, infrared light, ultraviolet light are each passed through after tail gas again through light reflecting device
Correspondence reflexes to infrared optical pickup apparatus, ultraviolet optical pickup apparatus, and by data collecting card by infrared optical pickup apparatus, ultraviolet light
The spectral signal that reception device is each received is sent to master controller, while be sent to for the vehicle license image of collection by camera
Master controller；Master controller is according to the outgoing of infrared light emission device without the infrared spectroscopy signals of tail gas, by after tail gas
The infrared spectroscopy signals Inversion Calculation received by infrared optical pickup apparatus obtains CO and CO in tail gas2Concentration, master controller root
The ultraviolet spectra signal intensity Inversion Calculation received according to ultraviolet optical pickup apparatus obtains NO in tail gasxWith the concentration of HC, while main
Controller to the License Plate Image that camera is gathered process and obtains vehicle license data, and the data transmitted with wireless router
Compare, find vehicle license meet and time corresponding vehicle speed data, acceleration information, last master controller will
CO and CO in vehicle license information, velocity information, acceleration information, tail gas2Concentration information, NOxPass through respectively with HC concentration informations
Wireless router is sent to external server.
Described telemetering motor vehicle tail system, it is characterised in that：Described barrier strips make multiple vehicles, and order is arranged one by one
It is listed on track and travels, wheel rolls light reflecting device during preventing vehicle cut-ins or vehicle from avoiding.
Described telemetering motor vehicle tail system, it is characterised in that：Described infrared light emission device, it is infrared that it is launched
Center wavelength of light select in the range of 1560~1580nm, wherein it is preferred that 1579.737nm be used for detect CO concentration in tail gas, it is excellent
1579.574nm is selected for detecting CO in tail gas2Concentration.
Described telemetering motor vehicle tail system, it is characterised in that：Described ultraviolet light emission device, it is ultraviolet that it is launched
Center wavelength of light is selected in the range of 200~250nm, wherein it is preferred that in the range of 225~230nm for detecting tail gas in NO
Concentration, the concentration of HC in preferably being used to detect tail gas in the range of 217~223nm.
Described telemetering motor vehicle tail system, it is characterised in that：Described infrared light emission device is by tunable two pole
Pipe laser is constituted, and the infrared light that tunable diode laser sends is divided into two-way through optical splitter, all the way by an infrared light
Electric explorer is received as reference light, and another collimated mirror collimation in road is parallel to be incident to tail gas as detection light, then is reflected through light
Received as the infrared photoelectric detector of infrared optical pickup apparatus by another after device reflection, finally by infrared optical pickup apparatus
The infrared spectroscopy signals of detection are sent to master controller by data collecting card.
Described telemetering motor vehicle tail system, it is characterised in that：Described ultraviolet light emission device is made up of deuterium lamp, deuterium
Tail gas is incident to as detection light, then made after being reflected through light reflecting device after the collimated mirror collimation of ultraviolet light that lamp sends is parallel
For the ultraviolet CCD monochromators of ultraviolet optical pickup apparatus are received, the position for adjusting ultraviolet CCD monochromators is that may detect ultraviolet spectra
The change of signal, ultraviolet CCD monochromators send to master controller the ultraviolet spectra signal of reception by data collecting card.
Described telemetering motor vehicle tail system, it is characterised in that：Described light reflecting device includes round seat, can in round seat
The microscope base of same circle is removed and installed, microscope base top vertical is to the mounting groove for having cylinder, one footpath in mounting groove top
Another radial direction two ends in infrared light reflector, mounting groove are separately installed with to two ends be separately installed with ultraviolet light reflection mirror, it is red
The height of radial direction where external light reflection mirror is higher than radial direction where the height of radial direction where ultraviolet light reflection mirror, and infrared light reflector
Where ultraviolet light reflection mirror radially；Infrared light emission device, infrared optical pickup apparatus are corresponded and are located at two infrared lights
Speculum top, ultraviolet light emission device, ultraviolet optical pickup apparatus are corresponded and are located at two ultraviolet light reflection mirror tops.
Described telemetering motor vehicle tail system, it is characterised in that：Described microscope base is by being fitted around multiple spiral shells of groove
Bolt is fixed in round seat, and microscope base bottom centre is provided with cross locating piece, and round seat top is provided with cross location hole, microscope base peace
When in round seat, the cross location hole at the top of the cross locating piece positioning insertion round seat of microscope base bottom.
Described telemetering motor vehicle tail system, it is characterised in that：Be additionally provided with the master control box Power supply for deuterium lamp circuit,
Modulation circuit for tunable diode laser, wherein Power supply for deuterium lamp circuit access master controller and supply power to deuterium lamp, by main control
Device controls to power by Power supply for deuterium lamp circuit to deuterium lamp；
Modulation circuit for tunable diode laser includes that temperature controller, current control circuit, sawtooth scan circuit, high-frequency signal are produced
Raw circuit, lock-in amplifier, the temperature controller, sawtooth scan circuit, high-frequency signal produce the input of circuit to be respectively connected to master
Controller, the output end of temperature controller is connected with tunable diode laser, the output end and current control of sawtooth scan circuit
Circuit input end is connected, and current control circuit output end is connected with tunable diode laser, and high-frequency signal produces circuit
Output end is connected with current control circuit input, lock-in amplifier input respectively, lock-in amplifier input also with conduct
The infrared photoelectric detector connection of infrared optical pickup apparatus, lock-in amplifier output end is connected by data collecting card with master controller
Connect.
In the present invention, using the solid line on the barrier strips substitution road surface higher than road surface between adjacent lane on road, can
Motor vehicles are limited on track arrangement traveling in order, it is higher than road surface now to be set away from two side positions on each track
Light reflecting device be used for reflected light signal, cannot overtake other vehicles and can only travel in order because vehicle is limited in track, therefore
Each vehicle can only be travelled in track along centre, and wheel will not be rolled by light reflecting device in the process of moving, not result in
The abrasion and damage of light reflecting device, improve the service life and measurement accuracy of whole system.
In the present invention, infrared, ultraviolet light emission and reception device are arranged in light reflecting device top in track, use
Vertical exit and the mode of reflection carry out spectral measurement, are capable of achieving the measurement one by one to vehicle in track, will not be subject to vehicle simultaneously
Every trade is sailed, the influence of cut-in situation, is capable of harmful gas concentration in the tail gas of accurate measurement each vehicle.
In the present invention, car networking is built based on wireless router and receives the speed of each vehicle, acceleration, and it is corresponding
Time point, the corresponding speed of vehicle, acceleration information when finding measurement tail gas according to time point and licence plate by master controller.Tradition
Radar velocity measurement method there is a problem of that measurement limitation is big and is easily avoided, and need to increase optics using optically measuring speeds
Equipment, accordingly increases cost.Therefore the present invention receives car speed, the acceleration of each vehicle MCU transmissions based on car networking
Information, not only cost is relatively low, and can effectively realize the accurate measurement of each vehicle speed, acceleration, and can be according to each
The speed at time point, acceleration information obtain the mean velocity information of vehicle in wireless router communication context, with measurement model
Enclose wide, measurement precision advantage high.
In the present invention, the centre wavelength of infrared light is selected in the range of 1560~1580nm, wherein it is preferred that 1579.737nm
For detecting CO concentration in tail gas, preferably 1579.574nm is used to detect CO in tail gas2Concentration, avoids aqueous vapor, first well
The influence of other gases such as alkane, improves sensitivity and the accuracy of emission measuring.
In the present invention, ultraviolet center wavelength of light is selected in the range of 200~250nm, wherein it is preferred that in 225~230nm models
It is used to detect the concentration of NO in tail gas in enclosing, the concentration of HC in preferably being used to detect tail gas in the range of 217~223nm, at this
The corresponding UV Absorption of NO, HC reaches most by force in a little wave-length coverages, can improve sensitivity and the accuracy of emission measuring.
Light reflecting device is made up of round seat and the microscope base being removably mounted in round seat in the present invention, infrared light in microscope base
The reflected light path of reflected light path and ultraviolet light mutually staggers, and realizes that reflected light path becomes one, corresponding infrared emission and connects
While receiving apparatus become one with ultraviolet emission and reception device, infrared light, ultraviolet light can be avoided from interfering, improved
The accuracy of measurement.Microscope base can be pulled down from round seat simultaneously, and location and installation between microscope base and round seat, be greatly facilitated daily
Maintenance work.
In the present invention, coordinate corresponding modulation circuit as infrared light supply from tunable diode laser, can use
Different electric currents sends the laser of different wave length driving tunable diode laser.Modulation electric current can do the cycle over time
The change of property, thus optical maser wavelength also can in certain wave band ceaselessly scan detector, therefore multicomponent gas can be realized
Infrared survey, has the advantages that measurement range is big.
In sum, the present invention is compared to prior art, with measurement range it is big, measurement sensitivity and accuracy are high, make
With the advantage of long lifespan, and the influence that vehicle is parallel, overtake other vehicles will not be received.
Brief description of the drawings
Fig. 1 is present system schematic diagram.
Fig. 2 is measuring system principle front view of the present invention.
Fig. 3 is master control box partial schematic block diagram of the present invention.
Fig. 4 is light reflecting device structural representation in the present invention.
Fig. 5 is light reflecting device principle of reflection figure of the present invention.
Fig. 6 is modulation circuit for tunable diode laser figure in the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, telemetering motor vehicle tail system, including：
Barrier strips 1, it separates solid line position between being arranged on adjacent lane 2 in the same direction on road, and higher than pavement of road, to take
For solid line is separated on road surface, the lane change of vehicle 3 on each track 2 is limited so that vehicle 3 is travelled in order；
Multiple light reflecting devices 4, its one-to-one corresponding is arranged on each centre position of track 2, and is reflected higher than pavement of road, and light
The height of device 4 is less than the chassis extreme lower position of vehicle 3 highly；
As shown in figure 5, multiple infrared light emissions and reception device, its one-to-one corresponding is arranged on light reflecting device 4 in each track
Top, wherein infrared light emission device 5 send infrared light to light reflecting device 4, are connect by infrared light after being reflected through light reflecting device 4
Receiving apparatus 6 are received；
Multiple ultraviolet light emissions and reception device, it corresponds with infrared light emission and reception device and becomes one to form collection
Adult 9, and the top of light reflecting device 4 in each track is separately positioned on, wherein ultraviolet light emission device 7 is sent out to light reflecting device
Go out ultraviolet light, received by ultraviolet optical pickup apparatus 8 after being reflected through light reflecting device 4；
Multiple cameras 10, its one-to-one corresponding is arranged on each top of track 2, and vehicle 3 on correspondence track 2 is gathered by camera 10
License Plate Image, and record acquisition time；
As shown in figure 3, master control box 11, it includes master controller, wireless router, data collecting card, image pick-up card, wherein
Data collecting card, image pick-up card output end are respectively connected to the FPDP of master controller, and wireless router accesses master controller
PORT COM, camera 10 is connected with the input of image pick-up card, the board shot by image pick-up card acquisition camera 10
According to sending into master controller after image, infrared optical pickup apparatus 6, ultraviolet optical pickup apparatus 8 respectively with the input of data collecting card
Connection, gathers infrared spectroscopy signals, ultraviolet optical pickup apparatus 8 that infrared optical pickup apparatus 6 receive and receives by data collecting card
Ultraviolet spectra signal simultaneously sends into master controller, and master controller is communicated with external server by wireless router and is connected；
Infrared light emission and reception device, ultraviolet light emission and reception device, camera, master control box can be co-located on gantry
On frame, it is crossed on each track by portal frame.
Onboard wireless module, it is arranged in the vehicle 3 travelled on track 2 and accesses the PORT COM of MCU in vehicle 3,
When vehicle traveling enters the communication context of wireless router in master control box 11, MCU is accessed wireless by onboard wireless module
Router, connects and composes car networking, MCU difference in each vehicle 3 with MCU communications in each vehicle 3 respectively by wireless router
The licence plate in speed information, acceleration information, corresponding temporal information and the default write-in MCU of itself is sent to wireless router
Information, is sent to master the speed information of each vehicle 3, acceleration information, temporal information and license plate information by wireless router
Controller；
When vehicle is travelled to infrared light emission and reception device, ultraviolet light emission and reception device operating position, by infrared light
Emitter 5 sends infrared light to the tail gas 12 that vehicle 3 is produced, and the tail gas 12 produced to vehicle 3 from ultraviolet light emission device 7 is sent out
Go out ultraviolet light, while shoot the License Plate Image of the vehicle 3 by camera 10, infrared light, ultraviolet light are each passed through after tail gas 12 again
Infrared optical pickup apparatus 6, ultraviolet optical pickup apparatus 8 are reflexed to through the correspondence of light reflecting device 4, and by data collecting card by infrared light
The spectral signal that reception device 6, ultraviolet optical pickup apparatus 8 are each received is sent to master controller, while camera 10 will be gathered
Vehicle license image be sent to master controller；Master controller is according to the outgoing of infrared light emission device 5 without tail gas 12
Infrared spectroscopy signals, in the infrared spectroscopy signals Inversion Calculation received by infrared optical pickup apparatus 6 after tail gas obtains tail gas
CO and CO2Concentration, the ultraviolet spectra signal intensity Inversion Calculation that master controller is received according to ultraviolet optical pickup apparatus 8 obtains tail
NO in gasxWith the concentration of HC, while master controller to the License Plate Image that camera 10 is gathered process obtains vehicle license number
According to, and with wireless router transmit data compare, find vehicle license meet and time corresponding vehicle number of speed
According to, acceleration information, last master controller is by CO and CO in vehicle license information, velocity information, acceleration information, tail gas2It is dense
Degree information, NOxExternal server is sent to by wireless router respectively with HC concentration informations.
Barrier strips 1 make multiple vehicles be arranged sequentially traveling on track 2 one by one, during preventing vehicle cut-ins or vehicle from avoiding
Wheel rolls light reflecting device.
Infrared light emission device 5, the infrared center wavelength of light of its transmitting is selected in the range of 1560~1580nm, wherein excellent
Select 1579.737nm for detecting CO concentration in tail gas, preferably 1579.574nm is used to detect CO in tail gas2Concentration.
Ultraviolet light emission device 7, the ultraviolet center wavelength of light of its transmitting is selected in the range of 200~250nm, wherein it is preferred that
The concentration of NO in being used to detect tail gas in the range of 225~230nm, in preferably being used to detect tail gas in the range of 217~223nm
The concentration of HC.
Infrared light emission device 5 is made up of tunable diode laser, and it is infrared that tunable diode laser sends
Light is divided into two-way through optical splitter, is received as reference light by an infrared photoelectric detector all the way, another collimated mirror collimation in road
It is parallel to be incident to tail gas as detection light, then after being reflected through light reflecting device 4 by another as the red of infrared optical pickup apparatus 6
Outer photodetector is received, and the infrared spectroscopy signals that will finally be detected by infrared optical pickup apparatus 6 are sent by data collecting card
To master controller.
Ultraviolet light emission device is made up of deuterium lamp, as detection light after the collimated mirror collimation of the ultraviolet light that deuterium lamp sends is parallel
Tail gas is incident to, then is received by the ultraviolet CCD monochromators as ultraviolet optical pickup apparatus after the reflection of light reflecting device 4, adjustment
The position of ultraviolet CCD monochromators is the change that may detect ultraviolet spectra signal, the ultraviolet spectra that ultraviolet CCD monochromators will be received
Signal is sent to master controller by data collecting card.
As shown in Figure 4, Figure 5, light reflecting device 4 includes round seat 41, the detachable mirror for being provided with same circle in round seat 41
Seat 42, the top vertical of microscope base 42 is respectively mounted to the mounting groove 43 for having cylinder, the one radial direction two ends in the top of mounting groove 43
There are another radial direction two ends in infrared light reflector 44, mounting groove 43 to be separately installed with ultraviolet light reflection mirror 45, infrared light reflection
Radial direction where the height of the place radial direction of mirror 44 is higher than the height of the place radial direction of ultraviolet light reflection mirror 45, and infrared light reflector 44 is hung down
The straight radial direction where ultraviolet light reflection mirror 45；Infrared light emission device 5, infrared optical pickup apparatus 6 correspond infrared positioned at two
Light reflection mirror top, ultraviolet light emission device 7, ultraviolet optical pickup apparatus 8 are corresponded and are located at two ultraviolet light reflection mirror tops.
Microscope base 42 is fixed in round seat 41 by being fitted around multiple bolts 46 of groove, and the bottom centre of microscope base 42 is provided with ten
Font locating piece 47, the top of round seat 41 is provided with cross location hole 48, and microscope base 42 is arranged on when in round seat 41, the bottom of microscope base 42
The cross location hole 48 at the top of the positioning insertion of cross locating piece 47 round seat 41.
As shown in figure 3, Power supply for deuterium lamp circuit, modulation circuit for tunable diode laser are additionally provided with master control box, its
Middle Power supply for deuterium lamp circuit accesses master controller and supplies power to deuterium lamp, is controlled to supply to deuterium lamp by Power supply for deuterium lamp circuit from master controller
Electricity；
As shown in fig. 6, modulation circuit for tunable diode laser include temperature controller, current control circuit, sawtooth scan circuit,
High-frequency signal produces circuit, lock-in amplifier, the temperature controller, sawtooth scan circuit, high-frequency signal to produce the input of circuit
Master controller is respectively connected to, the output end of temperature controller is connected with tunable diode laser, the output end of sawtooth scan circuit
It is connected with current control circuit input, current control circuit output end is connected with tunable diode laser, high-frequency signal
The output end of circuit is produced to be connected with current control circuit input, lock-in amplifier input respectively, lock-in amplifier input
End also be connected with as the infrared photoelectric detector of infrared optical pickup apparatus, lock-in amplifier output end by data collecting card and
Master controller is connected.
Temperature controller and current control circuit so that tunable diode laser works at a constant temperature, power output
The near-infrared laser of stabilization, and adjusted the central wavelength under test gas absorption line.By sawtooth scan circuit output
Frequency be the certain sawtooth signal of 100Hz, amplitude to the current control part of tunable diode laser, with to gas to be measured
Body absorption line is scanned.It is the sine wave signal of f to tunable diode to produce circuit output one frequency by high-frequency signal
The Injection Current of laser is modulated, to realize that wavelength is modulated.Through the laser of ovennodulation by as infrared optical pickup apparatus
Infrared photoelectric detector is received, and optical signal is converted into electric signal, delivers to lock-in amplifier.Lock-in amplifier is according to high-frequency signal
The reference signal of the 2f frequencies of circuit output is produced, infrared photoelectric detector signal is demodulated, so as to export second harmonic
Absorption signal, and gathered and processed by master controller.
Claims (9)
1. telemetering motor vehicle tail system, it is characterised in that：Including：
Barrier strips, it separates solid line position between being arranged on adjacent lane in the same direction on road, and higher than pavement of road, to replace
Separate solid line on road surface, limit vehicle lane change on each track so that vehicle is travelled in order；
Multiple light reflecting devices, its one-to-one corresponding is arranged on away from two side positions on each track, and higher than pavement of road, and light
Reflection unit is highly less than vehicle chassis extreme lower position highly；
Multiple infrared light emissions and reception device, its one-to-one corresponding are arranged on light reflecting device top in each track, wherein red
Outer light emitting devices sends infrared light to light reflecting device, is received by infrared optical pickup apparatus after being reflected through light reflecting device；
Multiple ultraviolet light emissions and reception device, it corresponds with infrared light emission and reception device and becomes one, and point
Light reflecting device top in each track is not arranged on, and wherein ultraviolet light emission device sends ultraviolet light to light reflecting device, warp
Received by ultraviolet optical pickup apparatus after light reflecting device reflection；
Multiple cameras, its one-to-one corresponding is arranged on each track top, by the licence plate of vehicle on camera collection correspondence track
Image, and record acquisition time；
Master control box, it includes master controller, wireless router, data collecting card, image pick-up card, wherein data collecting card,
Image pick-up card output end is respectively connected to the FPDP of master controller, and wireless router accesses the PORT COM of master controller,
The camera is connected with the input of image pick-up card, sent into after the License Plate Image shot by image pick-up card acquisition camera
Master controller, the infrared optical pickup apparatus, ultraviolet optical pickup apparatus are connected with the input of data collecting card respectively, by data
The ultraviolet spectra signal that capture card gathers the infrared spectroscopy signals of infrared optical pickup apparatus reception, ultraviolet optical pickup apparatus are received is simultaneously
Feeding master controller, the master controller is communicated with external server by wireless router and is connected；
Onboard wireless module, it is arranged in the vehicle travelled on track and accesses the PORT COM of MCU in vehicle, when vehicle row
When driving into the communication context of wireless router in master control box, MCU accesses wireless router by onboard wireless module, by nothing
Line router connects and composes car networking with MCU communications in each vehicle respectively, and MCU sends out to wireless router respectively in each vehicle
The license plate information in speed information, acceleration information, corresponding temporal information and the default write-in MCU of itself is given, by without circuit
The speed information of each vehicle, acceleration information, temporal information and license plate information are sent to master controller by device；
When vehicle is travelled to infrared light emission and reception device, ultraviolet light emission and reception device operating position, by infrared light
Emitter sends infrared light to the tail gas that vehicle is produced, and sends ultraviolet from ultraviolet light emission device to the tail gas that vehicle is produced
Light, while shoot the License Plate Image of the vehicle by camera, infrared light, ultraviolet light are each passed through after tail gas again through light reflecting device
Correspondence reflexes to infrared optical pickup apparatus, ultraviolet optical pickup apparatus, and by data collecting card by infrared optical pickup apparatus, ultraviolet light
The spectral signal that reception device is each received is sent to master controller, while be sent to for the vehicle license image of collection by camera
Master controller；Master controller is according to the outgoing of infrared light emission device without the infrared spectroscopy signals of tail gas, by after tail gas
The infrared spectroscopy signals Inversion Calculation received by infrared optical pickup apparatus obtains CO and CO in tail gas2Concentration, master controller root
The ultraviolet spectra signal intensity Inversion Calculation received according to ultraviolet optical pickup apparatus obtains NO in tail gasxWith the concentration of HC, while main
Controller to the License Plate Image that camera is gathered process and obtains vehicle license data, and the data transmitted with wireless router
Compare, find vehicle license meet and time corresponding vehicle speed data, acceleration information, last master controller will
CO and CO in vehicle license information, velocity information, acceleration information, tail gas2Concentration information, NOxPass through respectively with HC concentration informations
Wireless router is sent to external server.
2. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described barrier strips make multiple vehicles
It is arranged sequentially one by one on track and travels, wheel rolls light reflecting device during preventing vehicle cut-ins or vehicle from avoiding.
3. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described infrared light emission device,
The infrared center wavelength of light of its transmitting is selected in the range of 1560~1580nm, wherein it is preferred that 1579.737nm is used to detect tail gas
Middle CO concentration, preferably 1579.574nm is used to detect CO in tail gas2Concentration.
4. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described ultraviolet light emission device,
The ultraviolet center wavelength of light of its transmitting is selected in the range of 200~250nm, wherein it is preferred that being used to examine in the range of 225~230nm
The concentration of NO in tail gas is surveyed, the concentration of HC in preferably being used to detect tail gas in the range of 217~223nm.
5. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described infrared light emission device by
Tunable diode laser is constituted, and the infrared light that tunable diode laser sends is divided into two-way through optical splitter, all the way by
One infrared photoelectric detector is received as reference light, and another collimated mirror collimation in road is parallel to be incident to tail gas as detection light,
Received as the infrared photoelectric detector of infrared optical pickup apparatus by another after being reflected through light reflecting device again, finally by infrared
Optical pickup apparatus send to master controller the infrared spectroscopy signals of detection by data collecting card.
6. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described ultraviolet light emission device by
Deuterium lamp is constituted, and is incident to tail gas as detection light after the collimated mirror collimation of the ultraviolet light that deuterium lamp sends is parallel, then reflect dress through light
Received by the ultraviolet CCD monochromators as ultraviolet optical pickup apparatus after putting reflection, the position for adjusting ultraviolet CCD monochromators can be visited
Measure the change of ultraviolet spectra signal, ultraviolet CCD monochromators by the ultraviolet spectra signal of reception by data collecting card send to
Master controller.
7. telemetering motor vehicle tail system according to claim 1, it is characterised in that：Described light reflecting device includes circle
Seat, the detachable microscope base for being provided with same circle in round seat, microscope base top vertical is to the mounting groove for having cylinder, mounting groove
One, top radial direction two ends are separately installed with another radial direction two ends in infrared light reflector, mounting groove and are separately installed with ultraviolet light
Speculum, the height of the height higher than radial direction where ultraviolet light reflection mirror of infrared light reflector place radial direction, and infrared light reflection
Radial and normal to radial direction where ultraviolet light reflection mirror where mirror；Infrared light emission device, infrared optical pickup apparatus correspond position
In two infrared light reflectors top, ultraviolet light emission device, ultraviolet optical pickup apparatus are corresponded and are located at two ultraviolet light reflection mirrors
Top.
8. telemetering motor vehicle tail system according to claim 7, it is characterised in that：Described microscope base is by being fitted around
The multiple of groove is bolted in round seat, and microscope base bottom centre is provided with cross locating piece, and round seat top is provided with cross and determines
Position hole, microscope base is arranged on when in round seat, the cross location hole at the top of the cross locating piece positioning insertion round seat of microscope base bottom.
9. the telemetering motor vehicle tail system according to claim 1 or 5 or 6, it is characterised in that：In the master control box also
Power supply for deuterium lamp circuit, modulation circuit for tunable diode laser are provided with, wherein Power supply for deuterium lamp circuit accesses master controller and supplies
Electricity is controlled to power by Power supply for deuterium lamp circuit from master controller to deuterium lamp to deuterium lamp；
Modulation circuit for tunable diode laser includes that temperature controller, current control circuit, sawtooth scan circuit, high-frequency signal are produced
Raw circuit, lock-in amplifier, the temperature controller, sawtooth scan circuit, high-frequency signal produce the input of circuit to be respectively connected to master
Controller, the output end of temperature controller is connected with tunable diode laser, the output end and current control of sawtooth scan circuit
Circuit input end is connected, and current control circuit output end is connected with tunable diode laser, and high-frequency signal produces circuit
Output end is connected with current control circuit input, lock-in amplifier input respectively, lock-in amplifier input also with conduct
The infrared photoelectric detector connection of infrared optical pickup apparatus, lock-in amplifier output end is connected by data collecting card with master controller
Connect.
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| CN201710228128.7A CN106885786A (en) | 2017-04-07 | 2017-04-07 | Telemetering motor vehicle tail system |
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| CN107144543A (en) * | 2017-06-29 | 2017-09-08 | 中国科学院合肥物质科学研究院 | A kind of transmitting-receiving integrated open light path atmospheric detection system |
| CN107843693A (en) * | 2017-10-30 | 2018-03-27 | 武汉万集信息技术有限公司 | A kind of telemetering motor vehicle tail system and method based on laser scanning positioning |
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| CN109211795A (en) * | 2018-10-11 | 2019-01-15 | 北方工业大学 | Vertical multilane motor vehicle exhaust remote sensing detection method and system |
| CN109709283A (en) * | 2019-03-18 | 2019-05-03 | 瑞德(新乡)路业有限公司 | A kind of remote vehicle emissions monitoring device being easily installed |
| CN110044843A (en) * | 2019-05-24 | 2019-07-23 | 杭州电子科技大学 | Tail gas telemetering equipment based on Near-infrared Tunable diode laser spectrum technology |
| CN111983146A (en) * | 2020-08-17 | 2020-11-24 | 三河市清源绿创环境技术股份有限公司 | Motor vehicle exhaust monitoring system |
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| CN110044843A (en) * | 2019-05-24 | 2019-07-23 | 杭州电子科技大学 | Tail gas telemetering equipment based on Near-infrared Tunable diode laser spectrum technology |
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Application publication date: 20170623 |