CN106841076A - Source inventory acquisition methods and device based on vehicle-mounted double light path difference absorption spectrum - Google Patents
Source inventory acquisition methods and device based on vehicle-mounted double light path difference absorption spectrum Download PDFInfo
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- CN106841076A CN106841076A CN201710006255.2A CN201710006255A CN106841076A CN 106841076 A CN106841076 A CN 106841076A CN 201710006255 A CN201710006255 A CN 201710006255A CN 106841076 A CN106841076 A CN 106841076A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000862 absorption spectrum Methods 0.000 title claims abstract description 18
- 230000004907 flux Effects 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001658 differential optical absorption spectrophotometry Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000000694 effects Effects 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
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/066—Modifiable path; multiple paths in one sample
- G01N2201/0662—Comparing measurements on two or more paths in one sample
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Abstract
The invention discloses a kind of source inventory acquisition methods and device based on vehicle-mounted double light path difference absorption spectrum, the vertical column concentration of the conventional pollution gas in observation path is obtained by vehicle-mounted double light path ultraviolet difference absorption spectrum device, the dusty gas reconstructed using the method lattice pointization of interpolated value in vehicle-mounted observation path is distributed, while coupling wind speed and direction data（v）, and then try to achieve the variation delta VCD of dusty gas vertical column concentration in each lattice point along wind field direction∥V, with reference to lattice point along vertical wind direction intercept L⊥V, the external discharge capacity Flux within the time period of the lattice point is calculated, emission inventories are the set of the dusty gas discharge capacity of each lattice point in observation area in the region.The present invention is by trying to achieve the variable quantity of dusty gas vertical column concentration in each lattice point along wind field direction, then is combined calculating along the intercept of vertical wind direction with lattice point, obtains each lattice point discharge capacity, and then realize the quick obtaining of the endogenous inventory in observation area.
Description
Technical field
It is specifically a kind of to be based on vehicle-mounted double light path difference absorption spectrum the invention belongs to a kind of optical remote sensing method and apparatus
Source inventory acquisition methods and device.
Background technology
Emission inventory is the database listed by emission source type, is that the various sources of atmospheric pollution are discharged over a period to come
The discharge capacity of the different pollutants in air.At present for the emissions data acquisition methods of pollution sources, except the pollution commonly used
Outside the investigation statisticses method of source, also satellite remote sensing, model calculating etc..Foreign scholars think can due to lacking in developing country
The emissions data for leaning on, the discharge to these places is quantified and inquired into seems extremely difficult to local or region influence,
Therefore they use satellite estimation area pollutant emission flux.Specifically discharge in certain region that do not need of satellite remote sensing method
Data, as long as being that can obtain discharge capacity by the inverting to satellite data, this observed pattern is obtained in the source inventory of large scale
It is upper that there is certain advantage.Model is a kind of relatively conventional source inventory acquisition methods for calculating at present, and it is by environment
The calculating of statistics obtains raw emissions data, then is arranged by the pollutant that discharge of pollutant sources model can obtain certain resolution
High-volume.It can obtain the pollutant discharge amount of different resolution, be that atmospheric quality models carry out scenario analysis, forecasting and warning etc.
Premise with basis.But the development of China is maked rapid progress at present, the change of pollution sources situation is frequent, this based on investigation method
Source inventory have very strong time-lag effect.Therefore the timely acquisition of the source inventory of high time-space resolution is always a technology difficulty
Topic.
In recent years, various atmosphere environment supervision technologies make great progress, and wherein spectroscopy telemetry is with its multicomponent
Detection, it is continuous in real time the characteristics of developing direction and technology main flow as discharge of pollutant sources monitoring.Vehicle-mounted difference absorption spectrum skill
Art（Differential Optical Absorption Spectroscopy, DOAS）As a kind of passive optical remote measurement skill
Art, due to having the advantages that quick real-time, simple structure, multicomponent while observing, has been applied in industrial park in the world
Discharge capacity observational study on.
The content of the invention
The purpose of the present invention is, by using vehicle-mounted double light path ultraviolet difference absorption spectrum device, to realize high in observation area
The conventional pollution gas of time-space resolution（NO2、SO2Deng）Emission inventory it is quick and obtain simultaneously.The method need not be any
Survey data or statistics are aided in, and can directly obtain all kinds of pollution sources in observation area（Comprising point source, face source, dissipate source and nothing
Tissue source etc.）High time-space resolution emission inventories, the inventory of acquisition can use directly by atmospheric quality models such as CMAQ.
The present invention is achieved by the following technical programs：
Source inventory acquisition methods based on vehicle-mounted double light path difference absorption spectrum, it is characterised in that：It is ultraviolet by vehicle-mounted double light path
Difference absorption spectrum device obtains the vertical column concentration of the conventional pollution gas in observation path, uses the method lattice point of interpolated value
Change the dusty gas distribution in the vehicle-mounted observation path of reconstruct, while coupling wind speed and direction data（v）, and then try to achieve dirty in each lattice point
Contaminate variation delta VCD of the gas post concentration along wind field direction∥V, with reference to lattice point along vertical wind direction intercept L⊥V, then the lattice point
External discharge capacity Flux within the time period is：Flux=ΔVCD∥V ∙v ∙L⊥V, emission inventories are the area of observation coverage in the region
The set of the dusty gas discharge capacity of each lattice point in domain.
Source inventory acquisition device based on vehicle-mounted double light path difference absorption spectrum, it is characterised in that：Two are included to be located at
Without the telescope of observation angle, two signal output parts of telescope connect spectrometer, two sights of telescope by optical fiber
Alignment system, the connection of spectrometer, alignment system and computer are additionally provided with light-metering road；Two telescopes are led light is scattered through optical fiber
Enter spectrometer, by the observed pattern of double light path, obtain 90 ° of convection current atmosphere and conventional pollution gas on 30 ° of observation angles
Slant column intensity, after slant column intensity to be converted to geometric approximation vertical column concentration, the location data of combined positioning system, by number
According to combining in a computer, the vertical column concentration of conventional pollution gas in observation path is obtained.
The main characteristic of the invention lies in that：
1st, with the observed pattern of double light path, combined positioning system obtains the vertical column concentration of conventional pollution gas in observation path.
2nd, the post concentration distribution of dusty gas in observation area is reconstructed using the mode gridding of interpolated value.3rd, by along wind field direction
Vertical column change in concentration amount, with reference to lattice point along the intercept of vertical wind direction, obtains the pollutant flux on the section.4th, can be flexible
Rapidly simultaneously in actual measured zone various dusty gas emission inventory, aided in without any statistics.5th, obtained
The source listings data for obtaining is based on actual measured results, contains point source in region, face source, dissipates the pollution sources such as source and inorganization source row
Data are put, without carrying out data assimilation, is modified without statistics or model, save a large amount of manpower and materials.Can direct quilt
Atmospheric quality models such as CMAQ etc. is used.
The beneficial effects of the present invention are：
The present invention realizes the conventional pollution gas of all kinds of pollution sources high time-space resolutions in region（NO2、SO2Deng）Emission source it is clear
It is single quickly and simultaneously to obtain, strong measurement means are provided to grasp area alignment, it is that atmospheric quality models carry out scene
Analysis, forecasting and warning provides the pollution sources inventory of actual measurement, and technology is provided for environmental protection department grasps regional pollution situation
Support.
Brief description of the drawings
Fig. 1 is vehicle-mounted double light path ultraviolet difference absorption spectrum schematic device.
Fig. 2 is source inventory acquisition methods schematic diagram.
Specific embodiment
Vehicle-mounted double light path ultraviolet difference absorption spectrum device is as shown in figure 1, based on vehicle-mounted double light path difference absorption spectrum
Source inventory acquisition device, includes two and is located at without the telescope 1,2 of observation angle, and two telescopes 1,2 are arranged on mirror holder 3
On, two signal output parts of telescope 1,2 connect spectrometer 6 by optical fiber 4, in two observation light paths of telescope 1,2 also
Alignment system 5 is provided with, spectrometer 6, alignment system 5 are connected with computer 7；Two telescopes 1,2 will scatter light and be imported through optical fiber
Spectrometer, by the observed pattern of double light path, obtain 90 ° of convection current atmosphere with 30 ° of observation angles conventional pollution gas it is oblique
Post concentration, after slant column intensity to be converted to geometric approximation vertical column concentration, the location data of combined positioning system, by data
Combine in a computer, obtain the vertical column concentration of conventional pollution gas in observation path.
Source inventory acquisition methods are as shown in Fig. 2 the source inventory acquisition methods based on vehicle-mounted double light path difference absorption spectrum, lead to
The vertical column concentration that vehicle-mounted double light path ultraviolet difference absorption spectrum device obtains the conventional pollution gas in observation path is crossed, is used
The method lattice pointization of interpolated value reconstructs the dusty gas distribution in vehicle-mounted observation path, while coupling wind speed and direction data（v）, enter
And try to achieve the variation delta VCD of dusty gas vertical column concentration in each lattice point along wind field direction∥V, with reference to lattice point along vertical wind direction
Intercept L⊥V, then the external discharge capacity Flux within the time period of the lattice point be：Flux=ΔVCD∥V ∙v ∙L⊥V, in the region
Emission inventories are the set of the dusty gas discharge capacity of each lattice point in observation area.
Claims (2)
1. the source inventory acquisition methods of vehicle-mounted double light path difference absorption spectrum are based on, it is characterised in that：It is purple by vehicle-mounted double light path
Outer difference absorption spectrum device obtains the vertical column concentration of the conventional pollution gas in observation path, uses the method lattice of interpolated value
The dusty gas distribution in the vehicle-mounted observation path of reconstruct is revealed, while coupling wind speed and direction data（v）, and then try to achieve in each lattice point
Dusty gas vertical column concentration along wind field direction variation delta VCD∥V, with reference to lattice point along vertical wind direction intercept L⊥V, then the lattice
Putting external discharge capacity Flux within the time period is：Flux=ΔVCD∥V ∙v ∙L⊥V, emission inventories are observation in the region
The set of the dusty gas discharge capacity of each lattice point in region.
2. the source inventory acquisition device of vehicle-mounted double light path difference absorption spectrum is based on, it is characterised in that：Two are included to be located at not
With the telescope of observation angle, two signal output parts of telescope are by optical fiber connection spectrometer, two observations of telescope
Alignment system, the connection of spectrometer, alignment system and computer are additionally provided with light path；Two telescopes will scatter light and be imported through optical fiber
Spectrometer, by the observed pattern of double light path, obtain 90 ° of convection current atmosphere with 30 ° of observation angles conventional pollution gas it is oblique
Post concentration, after slant column intensity to be converted to geometric approximation vertical column concentration, the location data of combined positioning system, by data
Combine in a computer, obtain the vertical column concentration of conventional pollution gas in observation path.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108896483A (en) * | 2018-07-09 | 2018-11-27 | 中国科学院长春光学精密机械与物理研究所 | A kind of spectrum investigating system |
| CN111103591A (en) * | 2018-10-28 | 2020-05-05 | 无锡中科光电技术有限公司 | Laser radar inspection system for three-dimensional distribution and quantitative conveying evaluation of regional pollutants |
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| CN111103591A (en) * | 2018-10-28 | 2020-05-05 | 无锡中科光电技术有限公司 | Laser radar inspection system for three-dimensional distribution and quantitative conveying evaluation of regional pollutants |
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