CN108398529A - A kind of information acquisition method and information acquisition device - Google Patents
A kind of information acquisition method and information acquisition device Download PDFInfo
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- CN108398529A CN108398529A CN201810188976.4A CN201810188976A CN108398529A CN 108398529 A CN108398529 A CN 108398529A CN 201810188976 A CN201810188976 A CN 201810188976A CN 108398529 A CN108398529 A CN 108398529A
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 165
- 231100000719 pollutant Toxicity 0.000 claims abstract description 165
- 238000012544 monitoring process Methods 0.000 claims abstract description 121
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000000356 contaminant Substances 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 16
- 229910002091 carbon monoxide Inorganic materials 0.000 description 16
- 238000012806 monitoring device Methods 0.000 description 16
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- 238000004458 analytical method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
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- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
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Abstract
This application discloses a kind of information acquisition methods, including：Determine that the prefixed time interval in period to be analyzed and period to be analyzed, period to be analyzed include N number of prefixed time interval first；Then the pollutant concentration information aggregate in each prefixed time interval is obtained；Then it is determined from pollutant concentration information aggregate and meets the target concentration value of preset condition for regional background concentration, all monitoring points while pollution of circulation observe, from the cell upwind are diffused into the concentration value of the target contaminant in the cell through transmission in the cell of a concentration of default delimitation of regional background；Finally, the regional background concentration in each prefixed time interval is determined.The application can separate the information area of the information of reflecting regional background concn and the local discharge contribution of reflection, stringent to distinguish discharge responsibility, be conducive to pointedly be improved atmosphere pollution.
Description
Technical field
This application involves environmental monitoring more particularly to a kind of information acquisition methods and information acquisition device.
Background technology
With the development of science and technology, atmosphere pollution is also increasingly severe, or even the health of human body can be affected greatly.Allusion quotation
The atmosphere pollution of type includes carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO2), sulfur dioxide (SO2), it is volatilizable
Property organic matter (VOCs), ozone (O3) and particulate matter (PM) etc..The concentration of pollutant not only with discharge source emission pollutant
Concentration is related, also has relationship with Atmospheric Flow, and in the flow process of air, the pollutant gone out via discharge of pollutant sources can be with the back of the body
Scape air mixes, and then promotes the ambient concentration of the pollutant.
Conventional atmosphere environment supervision station uses the instrument based on principles such as chemiluminescence, light absorption or light scattering, this
A little instrument stock sizes are big, power consumption is big, it is expensive, need to be placed on special indoor environment and by special messenger's calibration, safeguard,
These features determine that the construction, operation and maintenance at atmosphere environment supervision station are considerably complicated, therefore can be used for air pollution monitoring
Monitoring point it is considerably less.
Assuming that there are an ordinary atmosphere monitoring stations in somewhere.If monitoring point is located exactly at the leeward of " locality " pollution sources
To and can smoothly capture the discharges of the pollution sources, then monitoring data reflection is that regional background concentration is arranged with local pollution sources
The sum of concentration lift-off value caused by putting.By common sense, it is found that a monitoring data counter can not push away two unknown quantitys, (i.e. regional background is dense
Concentration lift-off value caused by spending unknown, local emission source is unknown), therefore the result at the routine monitoring station can not obtain individual area
Domain background concn, and the calculating of background concn is the basis of pollutant monitoring, if regional background concentration cannot be deducted,
The concentration lifting values that will be unable to accurately determine local discharge contribution, also just can not strictly distinguish discharge responsibility.
Invention content
The embodiment of the present application provides a kind of information acquisition method, by the information of reflecting regional background concn and can reflect this
The information area of ground discharge contribution separates, stringent to distinguish discharge responsibility, is conducive to targetedly be improved atmosphere pollution.
In view of this, first aspect present invention provides a kind of information acquisition method, including：
Determine that the prefixed time interval in period to be analyzed and period to be analyzed, period to be analyzed include N number of
Prefixed time interval, N are the natural number more than or equal to 1, and each prefixed time interval is identical；
The pollutant concentration information aggregate in each prefixed time interval is obtained, pollutant concentration information aggregate is all mesh
The set for the pollutant concentration information that mark monitoring point monitors, pollutant are a kind of preset pollutant, and target monitoring point is pre-
If the monitoring point in the cell delimited；
Determine that the target concentration value for meeting preset condition is regional background concentration, the region back of the body from pollutant concentration information aggregate
All monitoring points while pollution of circulation observe, from the cell upwind in the cell of a concentration of default delimitation of scape
The concentration value of the target contaminant in the cell is diffused into through transmission；
Determine the regional background concentration in each prefixed time interval.
In conjunction with the embodiment of the present application in a first aspect, in the first embodiment of the embodiment of the present application first aspect, side
Method further includes：
After determining the regional background concentration in each prefixed time interval, method further includes：
The corresponding regional background concentration of each prefixed time interval is connected by way of linear or polynomial interopolation to determine
The correspondence of regional background concentration and time.
In conjunction with the first embodiment of the embodiment of the present application first aspect, the second of the embodiment of the present application first aspect
In kind embodiment, shown method further includes：
According in each prefixed time interval pollutant concentration information aggregate and pollutant regional background concentration and time
The difference of correspondence determine local discharge contribution, local discharge contribution is the wind direction under local emission source and successfully captures
The pollutant concentration monitored to the monitoring point of the discharge of pollutant sources.
In conjunction with the embodiment of the present application in a first aspect, in the third embodiment of the embodiment of the present application first aspect, side
Method further includes：
By region division to be monitored it is at least one cell according to longitude and latitude, includes that at least two targets are supervised in cell
Measuring point.
In conjunction with the third embodiment of the embodiment of the present application first aspect to first aspect, in the embodiment of the present application first
In 4th kind of embodiment of aspect, method further includes：
The physical parameter in the period to be analyzed is obtained, physical parameter is wind speed, wind direction；
It is determined in conjunction with the pollutant concentration information aggregate in the physical parameter and period to be analyzed in the period to be analyzed
Pollutant sources indicate that information, the contribution of concentration that pollutant sources instruction information is used to indicate pollutant are dense from regional background
Degree or local discharge contribution.
Second aspect of the present invention provides a kind of device, including：
First determining module is waited for for determining the prefixed time interval in period to be analyzed and period to be analyzed
Analysis time section includes N number of prefixed time interval, and N is the natural number more than or equal to 1, and each prefixed time interval is identical；
First acquisition module, for obtaining the pollutant concentration information aggregate in each prefixed time interval, pollutant is dense
Degree information aggregate is the set of the pollutant concentration information monitored according to all target monitoring points, and pollutant is preset one kind
Pollutant, target monitoring point are the monitoring point in the default cell delimited；
Selecting module is carried on the back for meeting the target concentration value of preset condition from the determination of pollutant concentration information aggregate for region
Scape concentration, in the cell of a concentration of default delimitation of regional background all monitoring points observe simultaneously, on the cell
The pollution of circulation of wind direction is diffused into the concentration value of the target contaminant in the cell through transmission；
Second determining module, for determining the target pollutant concentration information in each prefixed time interval.
In conjunction with the embodiment of the present application second aspect, in the first embodiment of the embodiment of the present application second aspect, dress
It sets and further includes：
Second acquisition module connects each preset for the second determining module by way of linear or polynomial interopolation
The corresponding regional background concentration of time interval determines the correspondence of regional background concentration and time.
In conjunction with the first embodiment of the embodiment of the present application second aspect, the second of the embodiment of the present application second aspect
In kind embodiment, information acquisition device further includes：
Third determining module, for according in each prefixed time interval pollutant concentration information aggregate and pollutant it is dense
The difference of degree and the correspondence of time determines local discharge contribution, and local discharge contribution is the wind direction under local emission source
The pollutant concentration that monitoring point monitors deducts the concentration value obtained after regional background concentration.
In conjunction with the embodiment of the present application second aspect, in the third embodiment of the embodiment of the present application second aspect, letter
Ceasing acquisition device further includes：
Division module is used to according to longitude and latitude be at least one cell by region division to be monitored, includes in cell
1 target monitoring points.
In the first embodiment to the third embodiment of second aspect in conjunction with the embodiment of the present application second aspect
Any one, in the 4th kind of embodiment of the embodiment of the present application second aspect, information acquisition device further includes：
Third acquisition module, for obtaining the physical parameter in each prefixed time interval, physical parameter is wind speed, wind
To；
4th determining module, for combining in the physical parameter and each prefixed time interval in each prefixed time interval
Pollutant concentration information aggregate determine pollutant sources indicate information, pollutant sources instruction information be used to indicate pollutant
Contribution of concentration is from regional background concentration or local discharge contribution.
The application third aspect provides a kind of computer program product, when run on a computer so that computer
The method that any of the above-described aspect can be executed.
The application fourth aspect provides a kind of computer storage media, soft for being stored as computer used in the above method
Part instructs, when run on a computer so that the method that computer can execute either side among the above.
As can be seen from the above technical solutions, the embodiment of the present application has the following advantages：
The embodiment of the present application provides a kind of information acquisition method, including：The period to be analyzed is determined first and is waited for point
The prefixed time interval in the period is analysed, the period to be analyzed includes N number of prefixed time interval, and N is the nature more than or equal to 1
Number, each prefixed time interval are identical；Then, the pollutant concentration information aggregate in each prefixed time interval is obtained, it is dirty
Dye object concentration information set is the set for the pollutant concentration information that all target monitoring points monitor, pollutant is preset one
Kind pollutant, target monitoring point are the monitoring point in the default cell delimited；Then, it is selected from pollutant concentration information aggregate
The target pollutant concentration information for meeting preset condition, the target pollutant concentration information for meeting preset condition are used to indicate target
The regional background concentration of pollutant.It is preset by the above-mentioned means, monitoring device can determine to meet from pollutant concentration information aggregate
The target concentration value of condition is regional background concentration, which is used to indicate the pollution of circulation in upwind region through passing
Defeated diffusion reaches the pollutant concentration in the cell, can individually obtain accurate regional background concentration in this way and effectively divide accordingly
The contribution for cutting regional background concentration and local concentration of pollution discharge, improves the sheet obtained based on deducting regional background concentration
The reliability of the pollutant concentration lifting value of ground discharge contribution.
Description of the drawings
Fig. 1 is one embodiment schematic diagram of information acquisition method in the embodiment of the present application；
Fig. 2 is carbon monoxide regional background concentration and two-dimentional wind arrow spirogram in the embodiment of the present application；
Fig. 3 is that carbon monoxide locally contribute and two-dimentional wind arrow spirogram by discharge in the embodiment of the present application；
Fig. 4 is information acquisition device one embodiment schematic diagram in the embodiment of the present application；
Fig. 5 is another embodiment schematic diagram of information acquisition device in the embodiment of the present application；
Fig. 6 is another embodiment schematic diagram of information acquisition device in the embodiment of the present application；
Fig. 7 is another embodiment schematic diagram of information acquisition device in the embodiment of the present application；
Fig. 8 is another embodiment schematic diagram of information acquisition device in the embodiment of the present application；
Fig. 9 is the structural schematic diagram of information acquisition device in the embodiment of the present application.
Specific implementation mode
The embodiment of the present application provides a method information acquisition method, and by the embodiment of the present application, monitoring device can be from
Pollutant concentration information aggregate determines that the target concentration value for meeting preset condition is regional background concentration, which uses
Pollution of circulation in instruction upwind region reaches pollutant concentration, that is, regional background concentration of monitoring point, such energy after transmission
Accurate regional background concentration is individually obtained, it also can effective cut zone background concn and local concentration of pollution discharge, raising
The reliability of the local discharge capacity and pollutant concentration information that are obtained based on regional background concentration.
Term " first ", " second ", " third " in description and claims of this specification and above-mentioned attached drawing, "
The (if present)s such as four " are for distinguishing similar object, without being used to describe specific sequence or precedence.It should manage
The data that solution uses in this way can be interchanged in the appropriate case, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " comprising " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production
Product or equipment those of are not necessarily limited to clearly to list step or unit, but may include not listing clearly or for this
The intrinsic other steps of processes, method, product or equipment or unit a bit.
The concentration sources for a certain atmosphere pollution that monitoring device monitors are in two contributions, first, from closely local
The contribution of the pollutant concentration of source emission is discharged, second is that diffusing to the pollutant concentration tribute of the monitoring point from remote transmission
It offers, the regional background concentration of the latter, that is, so-called pollutant, can generally be monitored simultaneously by multiple monitoring points simultaneously.Monitoring point is
Determine which kind of source is contained in its monitoring data at the no lower wind direction in emission source, it is assumed that only there are one monitoring points at this time
A is monitored, and when monitoring point, A is not at the lower wind direction of local emission source, the pollutant concentration that monitoring point A is monitored is come
From the concentration i.e. regional background concentration for reaching the monitoring point through long distance transmission, which does not reflect local emission source
Discharge contribution.When monitoring point is placed exactly in the lower wind direction of local emission source, what monitoring point A included is regional background concentration and works as
Discharge the sum of pollutant concentration lifting values caused by source emission in ground.
The method of acquisition of information in the application is described in detail below, referring to Fig. 1, provided by the embodiments of the present application
A kind of embodiment of the method for acquisition of information includes：
101, determine that the prefixed time interval in period to be analyzed and period to be analyzed, period to be analyzed include
N number of prefixed time interval, N are the natural number more than or equal to 1, and each prefixed time interval is identical；
Monitoring device needs to preset a period, and the concentration situation of change of monitoring pollution object within the period is preset
Period can flexibly be adjusted, if pollutant emission situation is basicly stable and discharge capacity is less, take longer period
Interior monitoring data will not influence the accuracy of data, if pollutant concentration variation is very fast or discharge capacity is larger, can incite somebody to action
Period suitably reduces.Specifically, general preset time interval is same day zero to second day zero totally 24 hours, to obtain
Monitoring data within the scope of a whole day.
Monitoring device, can be according to factors such as the dense degree of pollution sources and topography and geomorphologies reasonably before monitoring data
It is multiple cells by region division to be monitored, then merges in individual unit lattice in above-mentioned selected time interval to be analyzed
All data of monitoring point.Prefixed time interval refers within the period to be analyzed every how long to extract a regional background dense
Degree, i.e., suitable analysis time step-length.It is generally initially set 1 hour, but such as half can also be foreshortened to according to actual conditions
Hour or be elongated to such as 2 hours, but be usually no more than 2 hours, to avoid in the time step monitoring data occur it is aobvious
Write variation.Specifically, if period to be analyzed i.e. analysis time section are 24 hours, if default in the period to be analyzed
Time interval is set as 1 hour, then N is 24 divided by 1 equal to 24, it is meant that has 24 time intervals.
102, the pollutant concentration information aggregate of period to be analyzed is obtained, pollutant concentration information aggregate is according to all
The set for the pollutant concentration information that target monitoring point monitors, pollutant are a kind of preset pollutant, and target monitoring point is
All monitoring points in the default cell delimited；
The pollutant concentration information aggregate in each prefixed time interval is being obtained in the embodiment of the present application, can first obtained
The monitoring data of all monitoring points in period cell to be analyzed, then namely according to above-mentioned described prefixed time interval
Time step determines the monitoring data in each step-length one by one.
Specifically, if the period to be analyzed is 24 mornings, 0 point-November 25 November in 2017,0 point, totally 24 hours of morning.
Atmosphere pollution to be monitored is carbon monoxide (CO), and the time step selected is 1 hour.In this way, the above-mentioned time is divided into
0 point of morning of November 24 is to 1:00 AM, 1:00 AM to 22 points to 23 points of 2:00 AM ... midnight, 23 points to 24 points totally 24 small
Time interval.
Assuming that share 5 monitoring points in certain cell, then being recorded in above-mentioned 24 hours by this 5 monitoring points
The data of the concentration of all CO are separately dispensed by the corresponding monitoring time of every data between above-mentioned 24 preset times
Every interior, all CO data from 5 monitoring points summarized in each 1 hour time interval, these data have then been obtained
Constitute the set of pollutant concentration information.
103, determine that the target concentration value for meeting preset condition is regional background concentration, area from pollutant concentration information aggregate
Domain background concn is all monitoring points while accumulation observe, from the cell upwind in the default cell delimited
Pollution is diffused into the concentration value of the target contaminant in the cell through transmission；
It is regional background concentration that preset condition, which is typically chosen 5% corresponding concentration value, which represents from non-
The pollution of ground discharge source emission reaches the pollutant concentration in monitoring region after transmission, therefore can be by cell (i.e. monitoring section
Domain) in all monitoring device detect jointly.Regional background concentration should be with the target stains of the discharge contribution of local emission source
The concentration lifting values of object strictly distinguish.
Specifically, it is assumed that the data strip one of the concentration of the CO monitored shares 20, respectively 252ppb (part per
Billion), 241ppb, 233ppb, 218ppb, 209ppb, 197ppb, 193ppb, 189ppb, 185ppb, 183ppb,
180ppb,177ppb,170ppb,166ppb,162ppb,160ppb,155ppb,149ppb,135ppb,132ppb.Ppb is
The abbreviation of part per billion is the unit of concentration, for indicating a kind of unit symbol (1ppb tables of gas mixing ratio
Show that there are one be target gas molecules in every 1,000,000,000 atmospheric molecules).Preset condition is selected if it is from above-mentioned monitoring data
5% corresponding concentration value is selected as target pollutant concentration information i.e. regional background concentration, then 5% corresponding concentration value is
132ppb, i.e., using the value as regional background concentration.
For preset condition other than it can be set as lower percentage such as 5%, can also be adjusted according to actual conditions should
Value is 2% or 7%, and concrete numerical value is not construed as limiting, but is generally not more than 10%.Not taking the minimum value in concentration information set is
In order to reduce Outliers (as instrument is not normal, low value data caused by noise or other special weathers, transmission conditions) interference.
104, the regional background concentration in each prefixed time interval is determined.
Be in above-mentioned steps in 1 hour for example each in each prefixed time interval from all monitoring points in cell
The monitoring data of pollutant of the same race take statistics analysis, then pick out meet preset condition concentration value it is dense as regional background
It spends, the regional background concentration at each interval can be passed through after the regional background concentration in each prefixed time interval of determination
Linear or polynomial interopolation mode connects, and establishes extensive and thinner sampling time one-to-one regional background
The time sequential value of concentration data.
A kind of information acquisition method is provided in the embodiment of the present application, including：The period to be analyzed is determined first and is waited for
Prefixed time interval in analysis time section, period to be analyzed include N number of prefixed time interval, and N is the nature more than or equal to 1
Number, each prefixed time interval are identical；Then, the pollutant concentration information aggregate in each prefixed time interval is obtained, it is dirty
Dye object concentration information set is the set for the pollutant concentration information that all target monitoring points monitor, pollutant is preset one
Kind pollutant, target monitoring point are the monitoring point in the default cell delimited；Then, it is selected from pollutant concentration information aggregate
Meet the target pollutant concentration information of preset condition, the accumulation that target pollutant concentration information is used to indicate upwind region is dirty
The pollutant concentration for reaching monitoring unit lattice after transmission is contaminated, can reflect the region of the target stains concentration of the monitoring unit lattice
Background value；Finally, as stated above, the target pollutant concentration information in each prefixed time interval is determined one by one.By upper
Mode is stated, monitoring device can determine that the target concentration value for meeting preset condition is that regional background is dense from pollutant concentration information aggregate
Degree, the regional background concentration are used to indicate the pollutant that the non-local pollution of circulation for discharging source emission reaches monitoring point after transmission
Concentration.The embodiment of the present application can individually obtain accurate regional background concentration, effective cut zone background concn and local discharge
Pollutant concentration different contributions, can also improve the local discharge capacity obtained based on regional background concentration and pollutant is dense
Spend the reliability of information.
Optionally, on the basis of above-mentioned Fig. 1 corresponding embodiments, the of information acquisition method provided in an embodiment of the present invention
In one alternative embodiment, after determining the regional background concentration in each prefixed time interval, method further includes：
The corresponding regional background concentration of each prefixed time interval is connected by way of linear or polynomial interopolation to determine
The correspondence of regional background concentration and time.
After determining the regional background concentration in single small time interval one by one, in a manner of linear or polynomial interopolation
Interpolation in these sections, it is therefore an objective to connect the regional background concentration of each time interval, to obtain monitoring point note
The pollutant concentration of record and the correspondence of Each point in time.
In the embodiment of the present application, the regional background that monitoring device gets target contaminant in each prefixed time interval is dense
The case where spending can further know that the background concn of target stains object area is dynamic within the period to be analyzed according to these data
State situation of change, moreover it is possible to obtain the corresponding local discharge contribution that each monitoring point monitors.Stringent distinguishable region background concn
Influence with local discharge contribution to pollutant concentration in air is conducive to differentiate discharge responsibility, and the conclusion obtained helps to blame
Appoint the precision management divided with supervision department.
Optionally, on the basis of above-mentioned Fig. 1 corresponding embodiments, information acquisition method provided in an embodiment of the present invention is again
In one alternative embodiment, method further includes：
This is determined according to the difference of pollutant concentration information aggregate and regional background concentration in each prefixed time interval
Ground discharge contribution, local discharge contribution for local discharge source emission and specific monitoring device monitors in area to be monitored
Lifting value of pollutant concentration on the basis of regional background concentration.
First we assume that only there are one monitoring points in certain monitoring region.When the monitoring point is not located at local emission source leeward
Xiang Shi, the data of the pollutant concentration monitored are regional background concentration, i.e., be purely reflect from distal end accumulation discharge,
Factor in the entire monitoring region, leading to target pollutant concentration rising in overall region, the region back of the body are spread through transmission
Scape concentration is unrelated with the locality discharge pollutant of source emission.If monitoring site is when the lower wind direction of local emission source, monitoring point
Data then can be with the superposition of concentration lifting values caused by reflecting regional background concn and local discharge of pollutant sources.At this point, region
The difference of background concn and the pollutant concentration information aggregate in each prefixed time interval is just that local discharge is contributed.
It is available from above-mentioned analysis, feature that there are two background concn tools, first：It certainly will be by monitoring whole in cell
Point observes, so lead to the concentration of all monitoring points while being promoted.Second：Since it is to come from the multiple discharge of pollutant sources in upstream
Superposition, it will not generally occur quickly to change at any time for the reason of the statistical average, herein we generally assume that background is dense
Spend CbackgroundDo not occur acutely to change in prefixed time interval such as half an hour or one hour or so.Meanwhile if monitoring point just
It is located locally well at the lower wind direction of emission source, then the data that the monitoring point monitors can be expressed as gross contamination object concentration is
C=Cbackground+ΔClocal, Δ ClocalFor concentration rising value caused by local emission source, local discharge contribution is characterized.
When following research and application point is multiple, the relationship of regional background concentration and local discharge contribution, it is assumed that cell
Inside there are 4 monitoring devices A, B, C, D, is sampled with identical sampling step length, that is, prefixed time interval in every monitoring device, respectively obtained
10 sampled datas are taken, respectively：
A：Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground,
Cbackground, Cbackground, Cbackground；
B：Cbackground, Cbackground+ΔClocal, Cbackground+ΔClocal, Cbackground, Cbackground, Cbackground,
Cbackground, Cbackground+ΔClocal, Cbackground+ΔClocal, Cbackground；
C：Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground,
Cbackground, Cbackground, Cbackground；
D：Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground, Cbackground,
Cbackground, Cbackground, Cbackground。
In upper example, monitoring point B is the point for uniquely having monitored certain local source emission, is monitored successively in being sampled at its 10 times
To 4 discharges from the source.For the sake of simplicity, it will be assumed that concentration rising value does not become caused by the local source emission
Change, is always Δ Clocal。
Above-mentioned all 40 monitoring data are analyzed, such as 5% minimum corresponding concentration value is obviously Cbackground.It will
X% is set as the minimum concentration value in lower percentage such as 5% etc. rather than the monitoring cycle, it is ensured that the extraction of background concn
It is not influenced by due to extremely a other extremely read, has the function of certain filtering extremum, be avoided that certain
Mistake.
In the embodiment of the present application, monitoring device can according in each prefixed time interval pollutant concentration information aggregate and
The difference of regional background concentration determines local discharge contribution, and locally discharge contribution can more intuitive, the purely desired detection of reflection
The local emission source of objective area the case where discharging pollutants, great specific aim provides foundation for the rectification of atmosphere pollution.
Optionally, on the basis of above-mentioned Fig. 1 corresponding embodiments, information acquisition method provided in an embodiment of the present invention is again
In one alternative embodiment, method further includes：
By region division to be monitored it is at least one cell according to longitude and latitude, includes that at least two targets are supervised in cell
Measuring point.
According to the cloth dot density of monitoring point, territory element lattice to be monitored are divided into cell one by one.Cell size
It can generally be initially set 3 kilometers * 3 kilometers of square with actual conditions artificial selection.Specifically, in hot spot region as arranged
The more region in source is put, cloth dot density is generally higher, and cell can be set as to such as 2*2 kilometers of smaller region or 1*1 at this time
Kilometer, it is ensured that make monitoring data with convincingness with enough monitoring points in smaller region.In emission source
The region of less relative clean, cloth dot density is generally relatively low, and cell can be set as to such as 5*5 kilometers larger of region at this time
Even 10*10 kilometers.Specific setting determines according to locality situation of layouting, but in principle, in hot spot region, individual unit lattice
Interior monitoring point is no less than 4-5；In the region of unapparent emission source, the monitoring point in individual unit lattice preferably also ensures
2 or 2 or more.
The delimitation of cell need not be square, or such as 2 kilometers * 3 kilometers of rectangle.Cell is even
Not necessarily regular is rectangular, or irregular other shapes.It can be divided according to topography and geomorphology when division unit lattice
Shape.Above-mentioned partiting step can also be completed by manually setting by terminal computer program.
After cell has been got well in division, all monitoring points in single grid are chosen.This selection is to be based on having drawn
The longitude and latitude on four sides of fixed cell, all monitoring points within the scope of the longitude and latitude of the grid will be all selected.Likewise,
The selection can by it is artificial, can also be completed by preset computer program.
By region division to be monitored it is suitable size and shape according to cloth dot density and topography and geomorphology in the embodiment of the present application
Multiple cells, it is ensured that the size and shape of the cell of selection and the quantity of monitoring point are had according to actual conditions
Pointedly set, both will not monitoring point it is very few cause monitoring not comprehensively will not because of monitoring excess waste input at
This, there are scheme multiple choices to embody the flexibility of scheme, and according to circumstances pointedly charity monitoring point also improves prison
The efficiency and accuracy of survey.
Optionally, on the basis of above-mentioned Fig. 1 corresponding embodiments, information acquisition method provided in an embodiment of the present invention is again
In one alternative embodiment, method further includes：
The physical parameter in the period to be analyzed is obtained, physical parameter is wind speed, wind direction；
It is determined in conjunction with the pollutant concentration information aggregate in the physical parameter and period to be analyzed in the period to be analyzed
Pollutant sources indicate information, the atmosphere pollution that is used to indicate in the period to be analyzed of pollutant sources instruction information come to.
Although general physical parameter does not interfere with the emission behaviour of pollution sources such as wind speed, wind direction, these because
Element can influence the transmission process of pollutant, and the concentration situation of change He these factors of pollutant may produce in having known air
After raw influence, our preferably research and application data can be helped, determine the source of pollutant.It specifically, can basis
The anti-true source for pushing away the pollutant for changing moving line because of change of the wind of the situation of change of wind direction, improves instruction pollutant
The authenticity of the information in source.
The step of by above-described embodiment, terminal can divide concentration variation caused by local and the transmission of regional pollution object, and
And local can also be combined with two-dimentional wind vector data with the contribution of concentration of area transmissions respectively draws coming for pollutant concentration
Source figure, as shown in Figures 2 and 3, by taking the concentration of monitoring pollution object CO as an example, Fig. 2 is to be obtained after dividing from area transmissions
The corresponding two-dimentional wind arrow spirogram of the concentration of the CO of contribution, Fig. 3 be that coming from grid of obtaining after segmentation locally discharges source emission tribute
The corresponding two-dimentional wind arrow spirogram of concentration of the CO offered.If Fig. 2 is revealed, since the high concentration spot of regional background concentration mainly goes out
Present south wind to when, therefore can be determined that discharge of the regional background concentration essentially from certain southern province of carbon monoxide CO,
In Fig. 3, local concentration of emission high level mainly appears on north wind to part, therefore the local discharge of CO mostlys come from monitoring place
The vehicular emission in certain northern busy section.
The information acquisition device in the present invention is described in detail below, referring to Fig. 4, information acquisition device includes:
First determining module 201, for determining the prefixed time interval in period to be analyzed and period to be analyzed,
Period to be analyzed includes N number of prefixed time interval, and N is the natural number more than or equal to 1, and each prefixed time interval is identical；
First acquisition module 202, for obtaining the pollutant concentration information aggregate in each prefixed time interval, pollutant
Concentration information set is the set of the pollutant concentration information monitored according to all target monitoring points, and target monitoring point is default
Monitoring point in the cell of delimitation；
Selecting module 203, for determining that the target concentration value for meeting preset condition is area from pollutant concentration information aggregate
Domain background concn, the pollution of circulation that target pollutant concentration information is used to indicate upwind region reach monitoring point after transmission
Pollutant concentration；
Second determining module 204, for determining the target pollutant concentration information in each prefixed time interval.
A kind of information acquisition device is provided in the embodiment of the present application, including：First determining module 101 first, which determines, to be waited for point
The prefixed time interval in period and period to be analyzed is analysed, the period to be analyzed includes N number of prefixed time interval, and N is
Natural number more than or equal to 1, each prefixed time interval are identical；Then, the first acquisition module 102 obtains each preset time
Pollutant concentration information aggregate in interval, pollutant concentration information aggregate are that the pollutant that all target monitoring points monitor is dense
The set of information is spent, pollutant is a kind of preset pollutant, and target monitoring point is the monitoring point in the default cell delimited；
Then, selecting module 103 determines that the target concentration value for meeting preset condition is that regional background is dense from pollutant concentration information aggregate
Degree, target pollutant concentration information be used to indicate upwind region pollution of circulation reached after transmission monitoring point pollutant it is dense
Degree；Finally, the second determining module 104 determines the target pollutant concentration information in each prefixed time interval.Pass through above-mentioned side
Formula, monitoring device can determine that the target concentration value for meeting preset condition is regional background concentration from pollutant concentration information aggregate,
The pollution of circulation that the regional background concentration is used to indicate upwind region reaches the pollutant concentration of monitoring point after transmission, in this way
Accurate regional background concentration can be individually obtained, and effective cut zone background concn discharges pollutants with local based on this
Contribution of concentration improves the reliability of local discharge capacity and pollutant concentration information.
Optionally, on the basis of embodiment corresponding to above-mentioned Fig. 4, referring to Fig. 5, letter provided in an embodiment of the present invention
In another embodiment for ceasing acquisition device, information acquisition device further includes：
Second acquisition module 205, for being connected by way of linear or polynomial interopolation after the second determining module 204
Each corresponding regional background concentration of prefixed time interval determines the correspondence of regional background concentration and time.
In the embodiment of the present application, the case where monitoring device gets each prefixed time interval pollutant concentration, according to this
A little data can further know that dynamic of the regional background concentration of non-local discharge source emission formation within the period to be analyzed becomes
Change situation, moreover it is possible to obtain the corresponding local discharge contribution that each monitoring point monitors.The pollutant concentration information aggregate is root
It is converged according to the set for the pollutant concentration information that all target monitoring points monitor, such as the CO concentration that each monitoring point monitors
Always.The influence of stringent distinguishable region background concn and local discharge contribution to pollutant concentration in air is conducive to differentiate discharge duty
Appoint, the conclusion obtained contributes to the precision management of divisions of responsibility and supervision department.
Optionally, on the basis of embodiment corresponding to above-mentioned Fig. 4, referring to Fig. 6, letter provided in an embodiment of the present invention
In another embodiment for ceasing acquisition device, information acquisition device further includes：
Third determining module 206, for according in each prefixed time interval pollutant concentration information aggregate and region
The difference of background concn determines that local discharge contribution, local discharge contribution are that the short distance that monitoring device monitors discharges source emission
Pollutant concentration.
In the embodiment of the present application, monitoring device can according in each prefixed time interval pollutant concentration information aggregate and
The difference of the correspondence of regional background concentration and time determines local discharge contribution, and local discharge contribution can be more intuitive, pure
Reflect that the case where local emission source for the objective area for wanting detection discharges pollutants, great specific aim are atmosphere pollution purely
Rectification provide foundation.
Optionally, on the basis of embodiment corresponding to above-mentioned Fig. 4, referring to Fig. 7, letter provided in an embodiment of the present invention
In another embodiment for ceasing acquisition device, information acquisition device further includes：
Division module 207 is used to according to longitude and latitude be at least one cell by region division to be monitored, be wrapped in cell
Include at least one target monitoring point.
By region division to be monitored it is suitable size and shape according to cloth dot density and topography and geomorphology in the embodiment of the present application
Multiple cells, it is ensured that the size and shape of the cell of selection and the quantity of monitoring point are had according to actual conditions
Pointedly set, both will not monitoring point it is very few cause monitoring not comprehensively will not because of monitoring excess waste input at
This, there are scheme multiple choices to embody the flexibility of scheme, and according to circumstances pointedly charity monitoring point also improves prison
The efficiency and accuracy of survey.
Optionally, on the basis of embodiment corresponding to above-mentioned Fig. 4, referring to Fig. 8, letter provided in an embodiment of the present invention
In another embodiment for ceasing acquisition device, information acquisition device further includes：
Third acquisition module 208, for obtaining the physical parameter in each prefixed time interval, physical parameter be wind speed,
Wind direction；
4th determining module 209, for combining between the physical parameter in each prefixed time interval and each preset time
Determine that pollutant sources indicate that information, pollutant sources instruction information are used to indicate target every interior pollutant concentration information aggregate
The contribution for the part discharged from regional background or locally in pollutant ambient concentration comes to distribution.
Although wind speed and direction etc. does not interfere with the emission behaviour of pollution sources, these factors can influence the biography of pollutant
Defeated process can be with after the influence that the concentration situation of change He these factors of pollutant may will produce in having known air
Our preferably research and application data are helped, determine the source of pollutant.Specifically, it can be pushed away according to the situation of change of wind direction is counter
The transmission of the pollutant changed by wind vector and therefore caused by pollutant ambient concentration situation of change, improve instruction
The authenticity of the information of pollutant sources.
Fig. 9 is a kind of structural schematic diagram of information acquisition device provided in an embodiment of the present invention, may include one or one
A above central processing unit (central processing units, CPU) 322 (for example, one or more processors)
With memory 332, storage medium 330 (such as one or one of one or more storage application programs 342 or data 344
A above mass memory unit).Wherein, memory 332 and storage medium 330 can be of short duration storage or persistent storage.Storage
May include one or more modules (diagram does not mark) in the program of storage medium 330, each module may include pair
Series of instructions operation in information acquisition device.Further, central processing unit 322 could be provided as and storage medium
330 communications execute the series of instructions operation in storage medium 330 on information acquisition device 300.
Information acquisition device 300 can also include one or more power supplys 326, one or more wired or nothings
Wired network interface 350, one or more input/output interfaces 358, and/or, one or more operating systems 341,
Such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
The structure shown in Fig. 9 can be based on by the step performed by server in above-described embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example are only to illustrate the technical solution of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (12)
1. a kind of information acquisition method, which is characterized in that including：
Determine that the prefixed time interval in period to be analyzed and the period to be analyzed, the period to be analyzed include
N number of prefixed time interval, the N are the natural number more than or equal to 1, and each prefixed time interval is identical；
The pollutant concentration information aggregate of the period to be analyzed is obtained, the pollutant concentration information aggregate is all targets
The set for the pollutant concentration information that monitoring point monitors, the pollutant are a kind of preset pollutant, the target
Monitoring point is the monitoring point in the cell delimited；
Determine that the target concentration value for meeting the preset condition is regional background concentration, institute from the pollutant concentration information aggregate
State the pollutant concentration that a concentration of monitoring point for not being located at wind direction under local emission source of regional background monitors；
Determine the regional background concentration in each prefixed time interval.
2. according to the method described in claim 1, it is characterized in that, the corresponding area of each prefixed time interval of the determination
After the background concn of domain, the method further includes：
The corresponding regional background concentration of each prefixed time interval is connected by way of linear or polynomial interopolation to determine
The correspondence of the regional background concentration and time.
3. according to the method described in claim 2, it is characterized in that, the method further includes：
According in each prefixed time interval pollutant concentration information aggregate and the regional background concentration and time
The difference of correspondence determines that local discharge contribution, the local discharge contribution are used to indicate due to locality discharge source emission and lead
Lifting values of the pollutant concentration of cause relative to regional background concentration.
4. according to the method described in claim 1, it is characterized in that, the method further includes：
By region division to be monitored it is at least one cell according to the longitude and latitude, includes at least two in the cell
A target monitoring point.
5. method according to claim 1 to 4, which is characterized in that the method further includes：
The physical parameter in the period to be analyzed is obtained, the physical parameter is wind speed, wind direction；
In conjunction with the pollutant concentration information aggregate in the physical parameter and the period to be analyzed in the period to be analyzed
Determine that pollutant sources indicate that information, the contribution of concentration that the pollutant sources instruction information is used to indicate the pollutant are come
From regional background or local discharge contribution.
6. a kind of information acquisition device, which is characterized in that including：
First determining module, for determining the prefixed time interval in period to be analyzed and the period to be analyzed, institute
It includes N number of prefixed time interval to state the period to be analyzed, and the N is the natural number more than or equal to 1, when described each default
Between be spaced it is all identical；
First acquisition module, the pollutant concentration information aggregate for obtaining the period to be analyzed, the pollutant concentration
Information aggregate is the set for the pollutant concentration information that all target monitoring points monitor, the pollutant is preset one
Kind pollutant, the target monitoring point are the monitoring point in the default cell delimited；
Selecting module, for meeting the target concentration value of the preset condition from pollutant concentration information aggregate determination for institute
State regional background concentration, in the cell of a concentration of default delimitation of regional background all monitoring points observe simultaneously, come
The concentration value of the target contaminant in the cell is diffused into through transmission from the pollution of circulation of the cell upwind；
Second determining module, for determining the target pollutant concentration information in each prefixed time interval.
7. device according to claim 6, which is characterized in that described device further includes：
Second acquisition module, it is described every for being connected by way of linear or polynomial interopolation after second determining module
The corresponding regional background concentration of a prefixed time interval determines the correspondence of the regional background concentration and time.
8. device according to claim 7, which is characterized in that described device further includes：
Third determining module, for according in each prefixed time interval pollutant concentration information aggregate and the pollution
The difference of object area background concn and the correspondence of time determines local discharge contribution, and the local discharge contribution is positioned at institute
It states wind direction under local emission source and successfully captures the pollution monitored from the monitoring point of the locality emission source discharge signal
Object concentration.
9. device according to claim 6, which is characterized in that described device further includes：
Division module, for by region division to be monitored being at least one cell according to longitude and latitude, in the cell
Including the 1 target monitoring points.
10. the device according to any one of claim 6 to 9, which is characterized in that described device further includes：
Third acquisition module, for obtaining the physical parameter in each prefixed time interval, the physical parameter be wind speed,
Wind direction；
4th determining module, in conjunction between the physical parameter in each prefixed time interval and each preset time
Determine that pollutant sources indicate that information, the pollutant sources instruction information are used to indicate every interior pollutant concentration information aggregate
The contribution of concentration of the pollutant is from regional background concentration or local discharge contribution.
11. a kind of computer readable storage medium, including instruction, when described instruction is run on computers so that computer
Execute the method as described in any one of claim 1 to 5.
12. a kind of computer program product including instruction, when run on a computer so that computer executes such as right
It is required that the method described in any one of 1 to 5.
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