CN208984524U - A kind of light-dividing device and across wave band vehicular emission remote sensing instrument - Google Patents
A kind of light-dividing device and across wave band vehicular emission remote sensing instrument Download PDFInfo
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- CN208984524U CN208984524U CN201821690260.6U CN201821690260U CN208984524U CN 208984524 U CN208984524 U CN 208984524U CN 201821690260 U CN201821690260 U CN 201821690260U CN 208984524 U CN208984524 U CN 208984524U
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Abstract
The utility model relates to a kind of light-dividing devices and across wave band vehicular emission remote sensing instrument.Light-dividing device includes plus lens；Positioned at the main detector of the focus of plus lens；It is arranged at least one spectroscope on plus lens primary optical axis and with primary optical axis angle at 45 °, the high inverse medium film of certain wavelength is coated on spectroscopical side to light；Pair detector corresponding with each spectroscope, secondary detector is installed perpendicular to primary optical axis, and installation direction extended line passes through corresponding spectroscope central point.Across wave band vehicular emission remote sensing instrument includes detection device and reflection unit, and detection device includes detection light transmitting terminal and receiving end, and transmitting terminal is equipped with the multiple light sources of transmitting different-waveband light beam, beam merging apparatus, and receiving end is equipped with light-dividing device.Technical solutions of the utility model effectively prevent the drawbacks of motor vehicle in the prior art passes sequentially through gasoline, diesel oil monitoring device, guarantee the synchronism and accuracy of each wave band light velocity measurement, ensure the validity of vehicular emission measurement.
Description
Technical field
The utility model relates to motor-vehicle tail-gas measuring device, especially a kind of light-dividing device and across wave band vehicular emission
Remote sensing instrument.
Background technique
With the raising of people 's material life level, what motor vehicle already became the production of most of family and life must can not
Few a part.However the vehicle emission pollution generated therewith has become one of maximum mobile pollution source in city, wherein
It is carbon monoxide, hydrocarbon and nitrogen oxides that gasoline car, which discharges major pollutants, and emission of diesel engine major pollutants are black
Smoke particle object, vehicular emission supervision also become the important process of various regions Environmental Protection Agency.Existing vehicle emission pollution controls hand
Section is motor vehicle annual check system, but this method inefficiency, is affected by human factors in addition, the effect of this detection method
And it is not fully up to expectations.2015, country put into effect relevant policies again, detected in new registration motor vehicle 6 years from vehicular emission, institute
Favored with the vehicular emission remote sensoring technology developed in recent years by each environmentally friendly authorities.This method can be in vehicle
In normal driving process, vehicular emission is detected, is not necessarily to parking checking, does not influence traffic, and can be more true
React the actual condition of motor vehicle.
Technology used by vehicular emission remote sensing detection has following several at present: tail-gas from gasoline automobiles remote sensing detection instrument is main
Utilize the DOS technology of ultraviolet band and the TDLAS technology of near infrared band or non-dispersion infrared technology, diesel vehicle particulate matter remote sensing
Detection mainly utilizes the visible light scattering measurement technology of 530nm-570nm wave band.Publication No. CN201788142U's is practical
New patent discloses a kind of telemetering motor vehicle tail instrument and telemetering motor vehicle tail system, will separation originally Extract from Gasoline-fueled Vehicle
It is integrated on a set of equipment with two sets of tail gas monitoring devices of diesel oil smoke intensity.As depicted in figs. 1 and 2, in one embodiment, motor-driven
Tail gas remote sensing instrument is made of the first monitoring device 40 and the second monitoring device 50, and the first monitoring device 40 is provided with Extract from Gasoline-fueled Vehicle
Monitoring unit 41 and diesel oil smoke intensity monitoring unit 42, the second monitoring device 50 are provided with the angle matched with gasoline monitoring unit 41
Reflector 51, and the smoke intensity light source 52 matched with diesel oil smoke intensity monitoring unit 42.Extract from Gasoline-fueled Vehicle monitoring unit 41 and angle are anti-
Emitter 51 collectively constitutes a set of Extract from Gasoline-fueled Vehicle monitoring device, and diesel oil smoke intensity monitoring unit 42 collectively constitutes a set of with smoke intensity light source 52
Diesel oil smoke monitoring device, therefore, the first monitoring device 40 and the second monitoring device 50 are integrated with and can be used for monitoring Extract from Gasoline-fueled Vehicle
With two sets of monitoring devices of diesel oil smoke intensity.
But there are following drawbacks for such detection device.As shown in Figure 1, arrow direction indicates vehicle heading, vapour
Oily tail gas monitoring device and diesel oil smoke monitoring device are arranged along vehicle heading, between the two distance 5cm or so, vehicle row
When sailing, it is necessary to successively pass through gasoline monitoring device and diesel oil monitoring device.And as shown in Fig. 2, the measurement height of two devices
Range is inconsistent.Since monitoring device can not know to sail, come is gasoline car or diesel vehicle, can only pass through gasoline monitoring device
Or the variation of light intensity detected by diesel oil monitoring device is to judge.Ideally, gasoline car by when the tail gas that discharges can draw
Play the light intensity variation of gasoline monitoring device beam emitted, diesel vehicle by when the black smoke that is discharged can cause diesel oil monitoring device institute
Emit the light intensity variation of light beam, and then corresponding discharge numerical value is obtained by calculation.But then it will appear in actual operation following
Situation, when motor vehicle has just passed through gasoline monitoring device, also do not passed through diesel oil monitoring device, data collection system starts to adopt at once
Collect emission data (as shown in Figure 1).At this moment, diesel oil monitoring device may be using the measurement data that tailstock bumper blocks as this
The black smoke Particulate Pollution data of vehicle, since tailstock bumper can all block light intensity, diesel oil monitoring device is surveyed at this time
The light intensity variation obtained is inevitable larger, and system can will be judged as diesel vehicle by vehicle, and be exceeded diesel vehicle, cause to judge by accident
And it accidentally surveys.Under another situation, after vehicle passes through diesel oil monitoring device completely, due to the diffusion of gas, gasoline monitoring
Emission data measured by device may be just faint, leads to data invalid.
Utility model content
Against the above deficiency, the utility model provides a kind of light-dividing device and across wave band vehicular emission remote sensing instrument, has
Effect avoids the drawbacks of motor vehicle in the prior art passes sequentially through gasoline monitoring device and diesel oil monitoring device, guarantees each band of light
The accuracy of the synchronism and data of beam measurement, ensures the validity of vehicular emission measurement.
The technical solution of the utility model are as follows:
A kind of light-dividing device, including,
Plus lens；
Positioned at the main detector of the focus of plus lens；
It is arranged at least one spectroscope on plus lens primary optical axis and with primary optical axis angle at 45 °, the spectroscope
Side to light on be coated with the high inverse medium film of certain wavelength；
Pair detector corresponding with each spectroscope, the pair detector is installed perpendicular to primary optical axis, and installation direction
Extended line passes through corresponding spectroscope central point；The pair detector is into the distance and spectroscope of corresponding spectroscope central point
Heart point is equal to the focal length of plus lens to the sum of the distance of plus lens.
The spectroscope and secondary detector are respectively two, are respectively used to receive visible light and ultraviolet light, the main detection
Device is for receiving infrared light.
Across the wave band vehicular emission remote sensing instrument of one kind, including be set to two sides above road, be located at same level height
Detection device and reflection unit, the detection device include detection light transmitting terminal and receiving end, the transmitting terminal is equipped with hair
Multiple light sources, the beam merging apparatus of different-waveband light beam are penetrated, the receiving end is equipped with light-dividing device, and the multiple light source transmitting is not
Become Ray Of Light after beam merging apparatus with wave band light beam, is issued from transmitting terminal, reception is returned to after reflection unit reflects
End is separated into multi beam for detecting the different-waveband light beam of discharge gas after light-dividing device.
The beam merging apparatus include collimation lens and be arranged on collimation lens primary optical axis and with primary optical axis angle at 45 °
At least one reflecting mirror, the light source include positioned at collimation lens focus main light source and pair corresponding with each reflecting mirror
Light source, the beam orthogonal that the pair light source issues is in primary optical axis, and light beam passes through corresponding mirror center point, the reflecting mirror
High inverse medium film identical with the light beam wavelength of corresponding secondary light source transmitting, the pair light source to corresponding reflecting mirror are coated on side to light
The distance of central point, the focal length for being equal to collimation lens with the sum of the distance of mirror center point to collimation lens.
The pair light source and reflecting mirror are respectively two, and spectroscope and secondary detector are also respectively two, the main light source
Emit infrared light, two secondary light sources emit visible light and ultraviolet light respectively.
Light-dividing device is arranged by the way that multiple light sources and beam merging apparatus are set to detection device transmitting terminal for the utility model
In detection device receiving end, the different-waveband light beam of multiple light sources transmitting is merged into a branch of by beam merging apparatus, is issued by transmitting terminal,
Via the motor vehicle road surface of traveling, by the waste gas absorption of vehicular emission, then detection device is reflected back by reflection unit and is received
End.Merge the detection light beam device that is split and be again broken down into multiple light beams of different-waveband, is received and detected by corresponding detector,
Detection while single instrument discharges different Litters is realized, motor vehicle in the prior art is effectively prevented and passes sequentially through vapour
The drawbacks of oily monitoring device and diesel oil monitoring device, guarantees the accuracy of the synchronism and data of each wave band light velocity measurement, ensures
The validity of vehicular emission measurement.
Detailed description of the invention
Fig. 1 is the structure top view of the telemetering motor vehicle tail instrument of Publication No. CN201788142U；
Fig. 2 is the front view of the first monitoring device of Publication No. CN201788142U；
Fig. 3 is the structural schematic diagram of the utility model light-dividing device；
Fig. 4 is the structural schematic diagram of across the wave band vehicular emission remote sensing instrument of the utility model；
Fig. 5 is the structural schematic diagram of the utility model beam merging apparatus.
Specific embodiment
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
With reference to Fig. 3, a kind of light-dividing device 10 of the utility model, including, plus lens 11, main detector 12, several
Spectroscope 14 and secondary detector 15 corresponding with 14 quantity of spectroscope.Main detector 12 is located at the focal point of plus lens 11,
Spectroscope 14 is arranged on 11 primary optical axis 13 of plus lens and installs with primary optical axis 13 in 45 ° of angles, the side to light of spectroscope 14
On be coated with the high inverse medium film of certain wavelength；Secondary 15 installation site of detector is corresponding with each spectroscope 14, and installation direction hangs down
Directly in primary optical axis 13, and installation direction extended line passes through corresponding 14 central point of spectroscope；Secondary detector 15 arrives corresponding spectroscope
The distance of 14 central points, the focal length for being equal to plus lens 11 with the sum of the distance of 14 central point of spectroscope to plus lens 11.
Assuming that the quantity of spectroscope 14 and secondary detector 15 is n, containing wavelength X 1, λ 2, λ 3 ..., the mixing of λ n, λ n+1 examines
It surveys light beam and injects 11 window of plus lens, since the convergence of lens acts on, with the extension in converging beam path, hot spot can become
It is smaller and smaller.On 11 primary optical axis 13 of plus lens, equipped with first spectroscope 14 at 45 ° with primary optical axis 13, the first spectroscope
The high inverse medium film that central wavelength is λ 1 is coated on 14 sides to light.When containing wavelength X 1, λ 2, λ 3 ..., the detection light of λ n, λ n+1
When beam reaches the first spectroscope 14, wavelength is that the light of λ 1 is reflected onto the first secondary detector 15, and wavelength is λ 2, λ 3 ..., λ n, λ
The light beam of n+1 penetrates the first spectroscope 14.
Similarly, the second spectroscope 14 be arranged at 14 rear of the first spectroscope, center on primary optical axis 13, and with primary optical axis 13
At -45 ° of (relative to the first spectroscope 14 and 13 angle of primary optical axis) settings.Central wavelength is coated on second spectroscope, 14 side to light
For the high inverse medium film of λ 2, when containing wavelength X 2, λ 3 ..., the detection light beam of λ n, λ n+1 reach the second spectroscope 14 when, wavelength
The second secondary detector 15 is caused by reflection for the light of λ 2, and wavelength be λ 3 ..., the light beam of λ n, λ n+1 penetrate the second spectroscope 14.
And so on, wavelength be λ 3 ..., the detection light beam of λ n be successively split the reflection of mirror 14, until corresponding pair detector
On 15, the light beam of remaining λ n+1 penetrates n-th of spectroscope 14, reaches and is located on the main detector 12 of 11 focal point of plus lens.
It can be seen that the light-dividing device 10 of the utility model can separate the mixed light beam of different-waveband, until each corresponding detector,
For detecting discharge gas concentration corresponding to different-waveband light beam.
With reference to Fig. 4, across the wave band vehicular emission remote sensing instrument of the utility model, including be set to two sides above road,
Positioned at the detection device 100 and reflection unit 200 of same level height, detection device 100 includes detection 120 He of light transmitting terminal
Receiving end 110, transmitting terminal 120 are equipped with the multiple light sources and beam merging apparatus 20 for sending different wave length light beam, and receiving end 110 is equipped with this
The light-dividing device 10 of utility model.Reflection unit 200 is reflecting mirror, can be worked normally without power supply.
The absorption bands as corresponding to gas with various are different, such as carbon monoxide is infrared near infrared band
Wave band has absorption peak respectively, and nitric oxide has absorption peak in ultraviolet band and middle infrared band, and carbon dioxide is ultraviolet and visible
Optical band has absorption peak, it is seen that the 530nm wave band in light is more sensitive to the particulate matter in tail gas.If each gas is all used
One individual equipment measures, and necessarily will cause the increase of cost and equipment volume, and be inconvenient to operate.The utility model
Three wave band light beams are combined by across wave band light beam remote sensing instrument, are detected by same equipment, can be not only used for detection gasoline car institute
Discharge the pernicious gases such as carbon monoxide, hydrocarbon and nitrogen oxides, it can also be used to detect diesel vehicle institute discharged particle.
The light source of the utility model is three light sources that can emit three kinds of wave band light beams, and arrow direction is light beam advance
Direction, the detection light beam that three light sources issue, which passes through, carries out conjunction beam using beam merging apparatus 20, emits from same 120 window of transmitting terminal
Out, detection light beam is incident from same 110 window of receiving end after the reflection of reflection unit 200.By the detection light for closing beam
Beam contains the spectrum from ultraviolet light, visible light and infrared light, and wavelength is from 0.2 μm -1.8 μm.Due to currently without a spy
So wide wave band can be covered by surveying device or spectrometer, so needing to will test in light beam using the light-dividing device 10 of the utility model
Each wavelength separated comes, and the detector of corresponding wavelength or spectrometer is recycled to be tested and analyzed.
With reference to Fig. 5, the beam merging apparatus 20 of the utility model includes collimation lens 21 and is arranged in 21 primary optical axis of collimation lens
At least one reflecting mirror 23 on 22 and with the angle at 45 ° of primary optical axis 22, light source include the master of the focus positioned at collimation lens 21
Light source 301 and secondary light source 302 corresponding with each reflecting mirror 23, the beam orthogonal that secondary light source 302 issues in primary optical axis 22, and
Light beam passes through corresponding 23 central point of reflecting mirror, and the light beam wave emitted with corresponding secondary light source 302 is coated on the side to light of reflecting mirror 23
Long identical high inverse medium film, secondary light source 302 arrive the distance for corresponding to 23 central point of reflecting mirror and 23 central point of reflecting mirror to collimation
The sum of the distance of lens 21 is equal to the focal length of collimation lens 21.
Secondary light source 302 and reflecting mirror 23 are respectively two, and main light source 301 emits infrared light, and two secondary light sources 302 are sent out respectively
Penetrate visible light and ultraviolet light.Main light source 301 is located at the focal point of collimation lens 21, close to the reflecting mirror 23 and pair of main light source 301
Light source 302 is visible reflectance mirror 23 and visible light pair light source 302, and another group is ultraviolet light reflection mirror 23 and ultraviolet light pair light source
302.The high inverse medium film of visible light and ultraviolet light is coated on 23 side to light of visible reflectance mirror 23 and ultraviolet light reflection mirror respectively.
Visible reflectance mirror 23 can transmit the infrared light of the sending of main light source 301, it is seen that the visible light that light pair light source 302 issues, it can be seen that
Light reflection mirror 23 reflexes to coaxial with infrared light, and direction is consistent.Ultraviolet 23 energy transmitted infrared light of light reflection mirror and visible light are purple
The ultraviolet light that outer light pair light source 302 issues, then reflexed to and infrared light and visible light coaxial and direction by ultraviolet light reflection mirror 23
Unanimously.Collimation lens 21 can penetrate infrared light, visible light and ultraviolet light simultaneously.Main light source 301 and secondary light source 302 issue as a result,
Infrared light, visible light and ultraviolet light synthesized by beam merging apparatus 20 it is a branch of, from transmitting terminal 120 issue.
Correspondingly, the spectroscope 14 in Fig. 3 and secondary detector 15 are also respectively two, and main detector 12 is for receiving
Infrared light, two secondary detectors 15 are respectively used to receive visible light and ultraviolet light.In this way, the light beam after merging is travelled on road
Vehicular emission tail gas absorption after, turn again to detection device 100, by detecting the absorptivity of each wavelength after light splitting,
It then may determine that passed through motor vehicle is gasoline car or diesel vehicle, the harmful gas concentration of discharge can also be calculated.Due to closing
Light beam after and is emitted by same 120 window of transmitting terminal, and the detection light beam by same 110 window reception of receiving end, after merging
It is discharged gas while absorbing, effectively prevent motor vehicle in the prior art and pass sequentially through gasoline monitoring device and diesel oil monitoring dress
The drawbacks of setting guarantees the accuracy of the synchronism and data of each wave band light velocity measurement, ensures the validity of vehicular emission measurement.
Disclosed above is only the embodiments of the present invention, and still, the utility model is not limited to this, any ability
What the technical staff in domain can think variation should all fall into the protection scope of the utility model.
Claims (5)
1. a kind of light-dividing device (10), it is characterised in that including,
Plus lens (11)；
Positioned at the main detector (12) of the focus of plus lens (11)；
It is arranged at least one spectroscope on plus lens (11) primary optical axis (13) and with primary optical axis (13) angle at 45 °
(14), the high inverse medium film of certain wavelength is coated on the side to light of the spectroscope (14)；
Pair detector (15) corresponding with each spectroscope (14), the pair detector (15) are pacified perpendicular to primary optical axis (13)
Dress, and installation direction extended line passes through corresponding spectroscope (14) central point；The pair detector (15) arrives corresponding spectroscope
(14) distance of central point and the sum of the distance of spectroscope (14) central point to plus lens (11) are equal to plus lens (11)
Focal length.
2. light-dividing device according to claim 1, which is characterized in that the spectroscope (14) and secondary detector (15) are respectively
It is two, is respectively used to receive visible light and ultraviolet light, the main detector (12) is for receiving infrared light.
3. a kind of across wave band vehicular emission remote sensing instrument, which is characterized in that including be set to two sides above road, be located at it is same
The detection device (100) and reflection unit (200) of level height, the detection device (100) include detection light transmitting terminal
(120) and receiving end (110), the transmitting terminal (120) are equipped with the multiple light sources of transmitting different-waveband light beam, beam merging apparatus
(20), the receiving end (110) is equipped with light-dividing device as described in claim 1 (10), the difference of the multiple light source transmitting
Wave band light beam becomes Ray Of Light after beam merging apparatus (20), issues from transmitting terminal (120), anti-by reflection unit (200)
Receiving end (110) are returned to after penetrating, and multi beam is separated into after light-dividing device (10) for detecting the different-waveband light of discharge gas
Beam.
4. across wave band vehicular emission remote sensing instrument according to claim 3, which is characterized in that beam merging apparatus (20) packet
Include collimation lens (21) and be arranged on collimation lens (21) primary optical axis (22) and with primary optical axis (22) angle at 45 ° at least one
A reflecting mirror (23), the light source include positioned at collimation lens (21) focus main light source (301) and with each reflecting mirror
(23) corresponding secondary light source (302), the beam orthogonal that the pair light source (302) issues is in primary optical axis (22), and light beam passes through
Reflecting mirror (23) central point is corresponded to, the light beam emitted with corresponding secondary light source (302) is coated on the side to light of the reflecting mirror (23)
The identical high inverse medium film of wavelength, the pair light source (302) arrive the distance and reflecting mirror (23) of corresponding reflecting mirror (23) central point
Central point is equal to the focal length of collimation lens (21) to the sum of the distance of collimation lens (21).
5. across wave band vehicular emission remote sensing instrument according to claim 4, which is characterized in that it is described pair light source (302) and
Reflecting mirror (23) is respectively two, and spectroscope (14) and secondary detector (15) are also respectively two, main light source (301) transmitting
Infrared light, two secondary light sources (302) emit visible light and ultraviolet light respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690260.6U CN208984524U (en) | 2018-10-18 | 2018-10-18 | A kind of light-dividing device and across wave band vehicular emission remote sensing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821690260.6U CN208984524U (en) | 2018-10-18 | 2018-10-18 | A kind of light-dividing device and across wave band vehicular emission remote sensing instrument |
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| Publication Number | Publication Date |
|---|---|
| CN208984524U true CN208984524U (en) | 2019-06-14 |
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| CN201821690260.6U Active CN208984524U (en) | 2018-10-18 | 2018-10-18 | A kind of light-dividing device and across wave band vehicular emission remote sensing instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211826A (en) * | 2018-10-18 | 2019-01-15 | 安徽达致环保科技有限公司 | A kind of light-dividing device and across wave band vehicular emission remote sensing instrument |
| CN111678875A (en) * | 2020-07-03 | 2020-09-18 | 安徽安诚泽宇环境科技有限公司 | Gas detection device integrated and separated by multiple light sources |
-
2018
- 2018-10-18 CN CN201821690260.6U patent/CN208984524U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211826A (en) * | 2018-10-18 | 2019-01-15 | 安徽达致环保科技有限公司 | A kind of light-dividing device and across wave band vehicular emission remote sensing instrument |
| CN111678875A (en) * | 2020-07-03 | 2020-09-18 | 安徽安诚泽宇环境科技有限公司 | Gas detection device integrated and separated by multiple light sources |
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Effective date of registration: 20200731 Address after: 230001 Anhui Industrial Technology Innovation Research Institute a218-220, No. 2221, Changjiang West Road, high tech Zone, Hefei City, Anhui Province Patentee after: ANHUI ANCHENG ZEYU ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 230088 Room A416-418, 4th Floor, Area B, 2221 Changjiang West Road, Hefei High-tech Zone, Anhui Province Patentee before: ANHUI DAZHI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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