Pollutant tracing method and device based on underway monitoring vehicle

Abstract

The invention provides a pollutant tracing method and device based on an underway monitoring vehicle, and the method comprises the steps: controlling the underway monitoring vehicle to carry out multiple times of underway monitoring in a target monitoring region according to a preset path, carrying out the pollutant sampling of a plurality of sampling points in the underway monitoring process, and obtaining a plurality of pieces of pollutant information; wherein one sampling point samples one piece of pollutant information; each piece of pollutant information in the plurality of pieces of pollutant information comprises the pollutant composition of the sampling point, the concentration information of each pollutant and the wind direction of the sampling point; sequentially executing the methods in the method set until the emission source of each pollutant in the plurality of pollutant information is determined; wherein the method set comprises a characteristic factor method, a concentration distribution method based on a wind direction, a concentration ratio method and a principal component analysis method. According to the pollutant traceability method based on the underway monitoring vehicle provided by the invention, the traceability accuracy can be ensured while rapid traceability is realized, and the traceability efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pollutant source tracing, and particularly to a method and device for pollutant source tracing based on a mobile monitoring vehicle. Background Art

[0002] VOCs (volatile organic compounds) are a type of air pollutant that harms human health and are important precursors for the formation of ozone. They are widely present in both organized and unorganized emissions during industrial enterprise production and are the focus of environmental protection supervision and governance. There are many enterprises involving VOCs emissions in chemical industrial parks. On the one hand, the types of VOCs emitted are complex and diverse, and on the other hand, there are situations where multiple enterprises emit the same VOC simultaneously. When the VOCs emitted by enterprises diffuse to surrounding roads and communities along with the wind field, pollution incidents will occur. Mobile monitoring is achieved by mounting fast-response monitoring instruments on a mobile monitoring platform and realizing on-the-go measurement as the platform moves. It can obtain the concentration distribution of pollutants within a large area in a relatively short period of time.

[0003] In the prior art, after obtaining the pollutant concentration through mobile monitoring technology, a trained model is usually used for pollutant source tracing. Among them, the training of the model requires a large amount of work, and the accuracy of source tracing depends on the quality of the model, making the implementation process of source tracing more cumbersome and the source tracing efficiency not high. Moreover, the prior art does not address the problem of how to trace the source when similar pollutants are emitted by multiple emission sources and superimposed, resulting in low source tracing accuracy.

[0004] How to improve the efficiency and accuracy of pollutant source tracing is a technical problem that needs to be solved currently. Summary of the Invention

[0005] The present invention provides a method and device for pollutant source tracing based on a mobile monitoring vehicle to solve the defects existing in the prior art.

[0006] The present invention provides a method for pollutant source tracing based on a mobile monitoring vehicle, including:

[0007] Controlling the mobile monitoring vehicle to perform multiple mobile monitoring runs in a target monitoring area according to a preset path, and sampling pollutants at multiple sampling points during the mobile monitoring runs to obtain multiple pollutant information; wherein, one pollutant information is sampled at one sampling point; each pollutant information in the multiple pollutant information includes: the pollutant composition at the sampling point, the concentration information of each pollutant, and the wind direction at the sampling point.

[0008] Sequentially executing the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on the wind direction, the concentration ratio method, and the principal component analysis method.

[0009] A pollutant tracing method based on a mobile monitoring vehicle according to the present invention, before successively executing the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined, the method further includes:

[0010] Obtain the historical pollutant information of each emission source and the historical concentration information of each pollutant in the target monitoring area;

[0011] Set characteristic tags for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant.

[0012] A pollutant tracing method based on a mobile monitoring vehicle according to the present invention,

[0013] The setting of characteristic tags for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant includes:

[0014] In the case where the first pollutant is the pollutant emitted by the first emission source, set a characteristic factor tag corresponding to the first pollutant for the first emission source;

[0015] Wherein, the first emission source is the only emission source among the multiple emission sources that emits the first pollutant.

[0016] A pollutant tracing method based on a mobile monitoring vehicle according to the present invention, the setting of characteristic tags for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant includes:

[0017] Based on the concentration of each pollutant in the pollutants emitted by the second emission source, calculate the concentration ratio of any two pollutants in the pollutants emitted by the second emission source, and based on the concentration ratio, set a concentration ratio tag corresponding to the concentration ratio for the second emission source;

[0018] Wherein, the second emission source is an emission source among the multiple emission sources that emits multiple pollutants.

[0019] A pollutant tracing method based on a mobile monitoring vehicle according to the present invention, executing the characteristic factor method in the method set includes:

[0020] When the first pollutant is detected, based on the characteristic factor tag corresponding to the first pollutant, determine the first emission source as the emission source of the first pollutant.

[0021] A pollutant tracing method based on a mobile monitoring vehicle according to the present invention, for each wind direction, executing the wind direction-based concentration distribution method in the method set includes:

[0022] Determine the upwind sampling point and the downwind sampling point of the first target emission source based on the wind direction of the sampling points in the multiple pollutant information;

[0023] Determine that the pollutant information corresponding to the upwind sampling point of the first target emission source indicates the first concentration of the first target pollutant, and the pollutant information corresponding to the downwind sampling point of the first target emission source indicates the second concentration of the first target pollutant;

[0024] When the first concentration is less than the second concentration, determine that the first target emission source emits the first target pollutant;

[0025] Repeat the above steps until each pollutant of each emission source is judged according to the above steps.

[0026] According to a pollutant tracing method based on a mobile monitoring vehicle provided by the present invention, implementing the concentration ratio method in the method set includes:

[0027] Determine the upwind sampling point and the downwind sampling point of the second target emission source based on the wind direction of the sampling points in the multiple pollutant information;

[0028] Determine that the pollutant information corresponding to the upwind sampling point of the second target emission source indicates the first concentration ratio of any two second target pollutants, and the pollutant information corresponding to the downwind sampling point of the second target emission source indicates the second concentration ratio of the two second target pollutants;

[0029] When the first concentration ratio is the same as the second concentration ratio, determine that the second target emission source does not emit the two second target pollutants.

[0030] According to a pollutant tracing method based on a mobile monitoring vehicle provided by the present invention, after determining that the pollutant information corresponding to the upwind sampling point of the second target emission source indicates the first concentration ratio of any two second target pollutants, and the pollutant information corresponding to the downwind sampling point of the second target emission source indicates the second concentration ratio of the two second target pollutants, the method further includes:

[0031] When the first concentration ratio is different from the second concentration ratio, determine that the second target emission source is the emission source of at least one of the two second target pollutants.

[0032] According to a pollutant tracing method based on a mobile monitoring vehicle provided by the present invention, implementing the concentration ratio method in the method set further includes:

[0033] Identify a target second emission source among the second emission sources, and determine a first target sampling point within the preset range of the target second emission source. Calculate the first sampling concentration ratio of any two pollutants in the pollutant information sampled at the first target sampling point.

[0034] Determine the target concentration ratio label corresponding to the target second emission source.

[0035] When the first sampling concentration ratio corresponding to the first target sampling point conforms to the target concentration ratio label corresponding to the target second emission source, and the target second emission source is located upwind of the first target sampling point, determine that the pollutants at the first target sampling point are emitted by the target second emission source.

[0036] According to a pollutant traceability method based on a mobile monitoring vehicle provided by the present invention, when implementing the concentration ratio method in the method set, it further includes:

[0037] Control the mobile monitoring vehicle to monitor at a second target sampling point for a preset duration, and re-sample pollutants at the second target sampling point during the monitoring process to obtain re-sampled pollutant information at multiple moments. Wherein, the second target sampling point is a sampling point containing pollutants with undetermined emission sources. Calculate the second sampling concentration ratio of any two pollutants in the pollutant information sampled at the second target sampling point at multiple moments within a preset time period.

[0038] Identify a second emission source to be determined within the preset range of the second target sampling point, and determine the concentration ratio label corresponding to the second emission source to be determined.

[0039] When the second sampling concentration ratio at the target moment corresponding to the second target sampling point conforms to the concentration ratio label corresponding to the second emission source to be determined, and the re-sampled pollutant information at the target moment indicates that the second emission source to be determined is located upwind of the second target sampling point, determine that the pollutants at the second target sampling point are emitted by the second emission source to be determined. Wherein, the target moment is any moment within the preset time period.

[0040] According to a pollutant traceability method based on a mobile monitoring vehicle provided by the present invention, when implementing the principal component analysis method in the method set, it includes:

[0041] After controlling the mobile monitoring vehicle to monitor at a second target sampling point for a preset duration, and re-sampling pollutants at the second target sampling point during the monitoring process to obtain re-sampled pollutant information at multiple moments;

[0042] Perform principal component analysis on the re-sampled pollutant information at multiple moments to determine the emission source of the pollutants with undetermined emission sources at the second target sampling point.

[0043] The present invention also provides a pollutant source tracing device based on a mobile monitoring vehicle, including:

[0044] A sampling module, configured to control the mobile monitoring vehicle to perform multiple mobile monitoring operations in a target monitoring area according to a preset path, and perform pollutant sampling at multiple sampling points during the mobile monitoring operation to obtain multiple pollutant information; wherein, one pollutant information is sampled at one sampling point; each pollutant information in the multiple pollutant information includes: the pollutant composition at the sampling point, the concentration information of each pollutant, and the wind direction at the sampling point;

[0045] An analysis module, configured to sequentially execute the methods in the method set until the emission source of each pollutant in the multiple pollutant information is determined; wherein, the method set includes a characteristic factor method, a concentration distribution method based on wind direction, a concentration ratio method, and a principal component analysis method.

[0046] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the pollutant source tracing method based on a mobile monitoring vehicle as described in any one of the above.

[0047] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the pollutant source tracing method based on a mobile monitoring vehicle as described in any one of the above.

[0048] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, it implements the pollutant source tracing method based on a mobile monitoring vehicle as described in any one of the above.

[0049] A pollutant source tracing method and device based on a mobile monitoring vehicle provided by the present invention control the mobile monitoring vehicle to perform multiple mobile monitoring operations in a target monitoring area according to a preset path, and perform pollutant sampling at multiple sampling points during the mobile monitoring operation to obtain multiple pollutant information. Among them, one pollutant information is sampled at one sampling point, and each pollutant information in the multiple pollutant information includes: the pollutant composition at the sampling point, the concentration information of each pollutant, and the wind direction at the sampling point; sequentially execute the methods in the method set until the emission source of each pollutant in the multiple pollutant information is determined. Among them, the method set includes a characteristic factor method, a concentration distribution method based on wind direction, a concentration ratio method, and a principal component analysis method. It can be seen that after the pollutant information is collected in real time, the present invention sequentially executes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method in sequence, which can ensure the accuracy of source tracing while realizing fast source tracing and improve the source tracing efficiency. Description of the Drawings

[0050] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0051] Figure 1 is one of the schematic flowcharts of the pollutant source tracing method based on a mobile monitoring vehicle provided by the present invention;

[0052] Figure 2 is the second schematic flowchart of the pollutant source tracing method based on a mobile monitoring vehicle provided by the present invention;

[0053] Figure 3 is the complete flowchart of the pollutant source tracing method based on a mobile monitoring vehicle provided by the present invention;

[0054] Figure 4 is the schematic structural diagram of the pollutant source tracing device based on a mobile monitoring vehicle provided by the present invention;

[0055] Figure 5 is the schematic structural diagram of the electronic device provided by the present invention. Specific Embodiments

[0056] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0057] The following will describe Figures 1 - 5 a pollutant source tracing method and device based on a mobile monitoring vehicle of the present invention.

[0058] Figure 1 is one of the schematic flowcharts of the pollutant source tracing method based on a mobile monitoring vehicle provided in this embodiment. As Figure 1 shown, the pollutant source tracing method based on a mobile monitoring vehicle provided in this embodiment includes:

[0059] Step 100: Control the mobile monitoring vehicle to perform multiple mobile monitoring operations in the target monitoring area according to a preset path, and perform pollutant sampling at multiple sampling points during the mobile monitoring process to obtain multiple pollutant information; wherein, one pollutant information is sampled at one sampling point; each pollutant information in the multiple pollutant information includes: the pollutant composition at the sampling point, the concentration information of each pollutant, and the wind direction at the sampling point.

[0060] It should be noted that VOCs (volatile organic compounds) are a type of air pollutant that is harmful to human health. They are important precursors for the formation of ozone and are widely present in both organized and unorganized emissions during industrial production. They are the focus of environmental protection supervision and governance. The mobile monitoring technology achieves the purpose of measuring while moving by mounting a fast-response monitoring instrument on a mobile monitoring platform. It can obtain the concentration distribution of pollutants within a large area in a relatively short period of time.

[0061] Specifically, the mobile monitoring platform can be a mobile monitoring vehicle equipped with a GPS positioning system. The mobile monitoring vehicle can carry a White cell Fourier transform infrared spectrometer and a White cell ultraviolet differential absorption spectrometer. The White cell Fourier transform infrared spectrometer and the White cell ultraviolet differential absorption spectrometer include a power supply system, a spectrometer mainframe, a multi-reflection White cell, an intake pipeline, an exhaust pipeline, an air pump, etc. in their composition structures. Among them, the infrared spectrometer can monitor more than 300 VOCs components such as non-methane hydrocarbons, ethylene, propylene, and methanol, and the ultraviolet spectrometer can monitor benzene series substances such as benzene, toluene, and ethylbenzene that are not sensitive to the response of the infrared spectrometer. The mobile monitoring vehicle is equipped with a GPS system and can record the position information of the monitoring data. At the same time, an anemometer is mounted on the top of the mobile monitoring vehicle or on a high-point unobstructed position inside or around the monitoring site to monitor the wind direction at the sampling point.

[0062] Specifically, the target monitoring area can be a designated area containing multiple emission enterprises. Each emission enterprise can have multiple different process units. Correspondingly, the sampling points can be set on the roads between different enterprises or on the roads of different process units within the enterprise to ensure sufficient sampling.

[0063] Furthermore, the mobile monitoring vehicle can travel along an S-shaped path within the target monitoring area and collect the VOCs factor composition, the concentration information of each VOCs factor, and the wind speed and wind direction information of the anemometer at each sampling point along the preset path during the driving process.

[0064] Step 200: Sequentially execute the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method.

[0065] It should be noted that using a single method for pollutant source tracing may lead to low accuracy, and it may be impossible to trace each pollutant for an emission source that emits multiple pollutants. Based on this, this embodiment proposes to sequentially execute the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method, and achieve source tracing in different scenarios according to the logical order from simple to complex, improving the efficiency and accuracy of pollutant source tracing.

[0066] The above is the step description of the pollutant source tracing method based on the mobile monitoring vehicle provided by the present invention. It can be seen from the description of the above steps that according to the pollutant source tracing method based on the mobile monitoring vehicle provided by the present invention, by controlling the mobile monitoring vehicle to perform multiple mobile monitoring according to a preset path in the target monitoring area, and sampling pollutants at multiple sampling points during the mobile monitoring to obtain multiple pollutant information, wherein, one pollutant information is sampled at one sampling point, and each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point; sequentially execute the methods in the method set until the emission source of each pollutant in the multiple pollutant information is determined, wherein the method set includes the characteristic factor method, the concentration distribution method based on the wind direction, the concentration ratio method, and the principal component analysis method. It can be seen that after the pollutant information is collected in real time, the present invention sequentially executes the characteristic factor method, the concentration distribution method based on the wind direction, the concentration ratio method, and the principal component analysis method in sequence, which can ensure the accuracy of source tracing while realizing rapid source tracing and improve the source tracing efficiency.

[0067] Based on the above embodiments, in this embodiment, Figure 2 is the second flow chart of the pollutant source tracing method based on the mobile monitoring vehicle provided by this embodiment, as Figure 2 shown, before sequentially executing the methods in the method set until the emission source of each pollutant in the multiple pollutant information is determined, the method further includes:

[0068] Step 210, obtain the historical pollutant information of each emission source in the target monitoring area and the historical concentration information of each pollutant.

[0069] Step 220, set characteristic labels for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant.

[0070] It should be noted that the characteristic label of each emission source is pre-constructed. For example, if the pollutants emitted by the emission source enterprise A include ethylene, propylene, and methanol, the characteristic label corresponding to enterprise A can be obtained based on the pollutant composition emitted by enterprise A and the historical concentration information of each pollutant.

[0071] Specifically, as the mobile monitoring vehicle samples multiple pollutant information in real time, since each pollutant information includes the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point, the multiple pollutant information can be respectively analyzed based on the characteristic labels to determine the emission source of each pollutant included in the multiple pollutant information.

[0072] Specifically, collect the composition of pollutants emitted by each organized emission source and unorganized emission source in the target monitoring area, as well as the historical concentration information of each pollutant, or directly collect samples at the discharge port positions of the emission sources, and analyze them through a full-component analysis method to set characteristic tags for each emission source.

[0073] The characteristic tags can specifically include the following two types:

[0074] 1. In the case where the first pollutant is the pollutant emitted by the first emission source, set a characteristic factor tag corresponding to the first pollutant for the first emission source;

[0075] Among them, the first emission source is the only emission source among the multiple emission sources that emits the first pollutant.

[0076] Specifically, if a certain pollutant exists only in one emission source, a characteristic factor tag corresponding to the pollutant can be set for the emission source. After detecting the pollutant, it can be determined that it is emitted by the corresponding emission source.

[0077] 2. Based on the concentration of each pollutant in the pollutants emitted by the second emission source, calculate the concentration ratio of any two pollutants in the pollutants emitted by the second emission source, and based on the concentration ratio, set a concentration ratio tag corresponding to the concentration ratio for the second emission source;

[0078] Among them, the second emission source is an emission source among the multiple emission sources that emits multiple pollutants.

[0079] Specifically, for most emission sources, they emit multiple pollutants; for each emission source that emits multiple pollutants, sort the concentrations of each pollutant from large to small. For example, the pollutants emitted by emission source enterprise B are sorted from large to small in the order of c1, c2, c3... cn, and calculate the concentration ratios c2 / c1, c3 / c1... cn / c1, c1 / c2, c3 / c2, c4 / c2... cn / c2... cn-1 / cn respectively. A total of n(n - 1) / 2 concentration ratios can be obtained.

[0080] In one embodiment, if only a few emission source enterprises emit pollutant c6, the concentration ratio of pollutant c6 to other pollutants can be used as the concentration ratio tag for these emission source enterprises.

[0081] In another embodiment, if the ratio of the concentration of pollutant c2 to the concentration of pollutant c1 emitted by emission source enterprise B is much lower than that of other emission sources, the ratio of the concentration of pollutant c2 to the concentration of pollutant c1 can be used as the concentration ratio tag for emission source enterprise B.

[0082] Specifically, select 1 to 5 concentration ratios with the largest differences between different emission sources as the concentration ratio tags for the emission sources. By setting characteristic tags for each emission source, the differentiation between different emission sources can be achieved, facilitating the subsequent determination of pollutant emission sources based on the characteristic tags.

[0083] The pollutant tracing method based on the mobile monitoring vehicle provided in this embodiment can achieve rapid tracing based on the characteristic tags after real-time collection of pollutant information by pre-setting the characteristic tags corresponding to each emission source, improving the tracing efficiency. Moreover, it involves how to trace when similar pollutants are emitted by multiple emission sources and the tracing accuracy is relatively high.

[0084] Based on the above embodiment, in this embodiment, when executing the characteristic factor method in the method set, it includes:

[0085] When the first pollutant is detected, based on the characteristic factor tag corresponding to the first pollutant, determine the first emission source as the emission source of the first pollutant.

[0086] The pollutant tracing method based on the mobile monitoring vehicle provided in this embodiment can directly determine that the first emission source is the emission source of the first pollutant when the first pollutant is detected in real time by pre-setting the characteristic tags corresponding to each emission source, with high tracing efficiency.

[0087] Based on the above embodiment, in this embodiment, for each wind direction, when executing the wind direction-based concentration distribution method in the method set, it includes:

[0088] Based on the wind direction of the sampling points in the multiple pollutant information, determine the upwind sampling point and the downwind sampling point of the first target emission source;

[0089] Determine the first concentration of the first target pollutant indicated by the pollutant information corresponding to the upwind sampling point of the first target emission source, and the second concentration of the first target pollutant indicated by the pollutant information corresponding to the downwind sampling point of the first target emission source;

[0090] When the first concentration is less than the second concentration, determine that the first target emission source emits the first target pollutant;

[0091] Repeat the above steps until each pollutant of each emission source is judged according to the above steps.

[0092] It should be noted that after all the first pollutants detected at the sampling points are determined based on the characteristic factor method, for the remaining pollutants whose emission sources are not determined, execute the wind direction-based concentration distribution method to continue the analysis.

[0093] Specifically, the mobile monitoring vehicle conducts multiple mobile monitoring operations, each of which is carried out under different wind directions. During the specific analysis process, the wind direction of the current analysis process is determined based on the wind direction of the sampling points in the pollutant information, so as to quickly determine the upwind sampling points and downwind sampling points of a certain target emission source.

[0094] It can be understood that if the target emission source does not emit the target pollutant, during the process of the target pollutant floating from the upwind of the target emission source to the downwind, without the interference of other emission sources, the concentration of the target pollutant will decrease due to dilution. Therefore, if the first concentration of the target pollutant indicated by the pollutant information corresponding to the upwind sampling point of the target emission source is less than the second concentration of the target pollutant indicated by the pollutant information corresponding to the downwind sampling point of the target emission source, it indicates that the target emission source emits the target pollutant.

[0095] Furthermore, when obtaining the concentration distribution of the target pollutant corresponding to the downwind sampling points of the target emission source under different wind directions (with a difference of not 180°), to further determine the specific location of the target emission source. For example, if the target emission source is Factory A, without entering Factory A, to determine the specific location of the emission source in Factory A, trace linearly upwind from the sampling points with the highest concentration of the target pollutant in the downwind under two different wind directions of Factory A, and the intersection point of the two straight lines is the specific location of the emission source.

[0096] The pollutant tracing method based on the mobile monitoring vehicle provided in this embodiment, after determining all the first pollutants detected at the sampling points based on the characteristic factor method, for the remaining pollutants, continues the analysis by implementing the concentration distribution method based on the wind direction, improving the tracing efficiency and ensuring the accuracy of tracing.

[0097] Based on the above embodiments, in this embodiment, implementing the concentration ratio method in the method set includes:

[0098] Determine the upwind sampling points and downwind sampling points of the second target emission source based on the wind direction of the sampling points in the multiple pollutant information;

[0099] Determine the first concentration ratio of any two second target pollutants indicated by the pollutant information corresponding to the upwind sampling point of the second target emission source, and the second concentration ratio of the two second target pollutants indicated by the pollutant information corresponding to the downwind sampling point of the second target emission source;

[0100] In the case where the first concentration ratio and the second concentration ratio are the same, determine that the second target emission source does not emit the two second target pollutants;

[0101] In the case where the first concentration ratio is different from the second concentration ratio, determine that the second target emission source is the emission source of at least one of the two second target pollutants.

[0102] It should be noted that after the above method is used for traceability analysis, for the pollutants whose emission sources cannot be determined, the concentration ratio method is continued to be used for analysis.

[0103] It can be understood that if the target emission source does not emit the target pollutant, during the process of the target pollutant drifting from the upwind to the downwind of the target emission source, without the interference of other emission sources, although the concentration of the target pollutant will decrease due to dilution, the concentration ratio between the two target pollutants remains unchanged.

[0104] For the pollutant traceability method based on the mobile monitoring vehicle provided in this embodiment, after the above method is used for traceability analysis, for the pollutants whose emission sources cannot be determined, the concentration ratio method is continued to be used for analysis, which improves the traceability efficiency and ensures the accuracy of traceability.

[0105] Based on the above embodiment, in this embodiment, when implementing the concentration ratio method in the method set, it further includes:

[0106] Determine the target second emission source in the second emission source, and determine the first target sampling points within the preset range of the target second emission source, and calculate the first sampling concentration ratio of any two pollutants in the pollutant information sampled at the first target sampling points;

[0107] Determine the target concentration ratio label corresponding to the target second emission source;

[0108] When the first sampling concentration ratio corresponding to the first target sampling point conforms to the target concentration ratio label corresponding to the target second emission source, and the target second emission source is located upwind of the first target sampling point, it is determined that the pollutants at the first target sampling point are emitted by the target second emission source.

[0109] It should be noted that after the analysis based on the above concentration ratio method, for the pollutants whose emission sources cannot be determined, the concentration ratio method is continued to be used for analysis according to the concentration ratio label.

[0110] Specifically, as described in the above embodiment, the second emission source is an emission source that emits multiple pollutants simultaneously. For a certain second emission source, determine the target sampling points within the preset range. For example, the preset range can be within a radius of 100 meters, as long as there are target sampling points; if the sampling concentration ratio corresponding to the target sampling point is exactly the same as the target concentration ratio indicated by the target concentration ratio label corresponding to the second emission source, and the second emission source is located upwind of the target sampling point, it means that all the pollutants at the target sampling point are emitted by the second emission source.

[0111] The pollutant source tracing method based on the mobile monitoring vehicle provided in this embodiment, after analyzing based on the concentration ratio method, for the pollutants whose emission sources cannot be determined, continue to analyze according to the concentration ratio label by executing the concentration ratio method, improving the tracing efficiency and ensuring the accuracy of tracing.

[0112] Based on the above embodiment, in this embodiment, when executing the concentration ratio method in the method set, it further includes:

[0113] Control the mobile monitoring vehicle to monitor at the second target sampling point for a preset duration, and re-sample pollutants at the second target sampling point during the monitoring process to obtain re-sampled pollutant information at multiple moments; wherein, the second target sampling point is the sampling point containing pollutants with undetermined emission sources;

[0114] Calculate the second sampling concentration ratios of any two pollutants in the pollutant information sampled at the second target sampling point at multiple moments within a preset time period;

[0115] Determine the second emission source to be determined within the preset range of the second target sampling point, and determine the concentration ratio label corresponding to the second emission source to be determined;

[0116] When the second sampling concentration ratio at the target moment corresponding to the second target sampling point conforms to the concentration ratio label corresponding to the second emission source to be determined, and the re-sampled pollutant information at the target moment indicates that the second emission source to be determined is located upwind of the second target sampling point, determine that the pollutants at the second target sampling point are emitted by the second emission source to be determined; wherein, the target moment is any moment within the preset time period.

[0117] It should be noted that after analyzing based on the above execution of the concentration ratio method according to the concentration ratio label, for the pollutants whose emission sources remain undetermined, control the mobile monitoring vehicle to re-sample at the sampling point and continue the analysis.

[0118] Specifically, the preset duration can be 1h, as long as sufficient pollutant information can be re-sampled.

[0119] The pollutant source tracing method based on the mobile monitoring vehicle provided in this embodiment, after analyzing based on the execution of the concentration ratio method according to the concentration ratio label, for the pollutants whose emission sources remain undetermined, control the mobile monitoring vehicle to re-sample at the sampling point and continue the analysis, improving the tracing efficiency and ensuring the accuracy of tracing.

[0120] Based on the above embodiment, in this embodiment, when executing the principal component analysis method in the method set, it includes:

[0121] After the controlled mobile monitoring vehicle monitors a preset duration at the second target sampling point and re-samples pollutants at the second target sampling point during the monitoring process to obtain re-sampled pollutant information at multiple moments;

[0122] Perform principal component analysis on the re-sampled pollutant information at the multiple moments to determine the emission sources of the pollutants for which the emission sources have not been determined at the second target sampling point.

[0123] Specifically, if there are still sampling points for which the specific emission sources of the pollutants cannot be determined based on the above method, then control the mobile monitoring vehicle to perform re-sampling at the sampling point, and based on the pollutant information at multiple moments after re-sampling, determine the emission sources of the target pollutants through the principal component (PCA) analysis method.

[0124] The following is an example of the principal component analysis method:

[0125] Control the mobile monitoring vehicle to stay at the target sampling point for 1 hour, and a total of 12 pollutants are monitored, namely ethane, propane, ethylene, propylene, isobutene, butadiene, benzene, toluene, ethylbenzene, p-xylene, styrene, and methanol. A total of 900 sets of concentration data are obtained to form the initial factor matrix X 900×12 , and the Kaiser sampling adequacy test (MSA, Measure of sampling adequacy) is used. The MSA value is 0.8, and principal component analysis can be further performed.

[0126] Further obtain the covariance matrix C of the 12 eigenvectors 12×12 , obtain 12 orthonormal eigenvectors and eigenvalues, sort the eigenvalues in descending order, and extract the newly constructed features with eigenvalues > 1 as the principal components. A total of 4 principal components with eigenvalues of 4.23, 3.31, 2.22, and 1.67 are obtained. The percentages of these 4 principal components representing all components are 31.50%, 24.65%, 16.53%, and 12.43% respectively. The 4 principal components together explain 85.11% of the information of all the data, and the new principal component matrix formed by the 4 principal components is D 12×4 .

[0127] Table 1 shows the Rotated D obtained after performing maximum variance rotation on the principal component matrix D 12×4 and converging after 6 iterations, see the following table. 12×4 See the following table.

[0128] Table 1

[0129]

[0130] Based on the load values in the table being > 0.4 as the main pollutants of a certain emission source, it is obtained that the main pollutants of emission source 1 are ethane, propane, and benzene, the main pollutants of emission source 2 are ethylene, propylene, and isobutene, the main pollutants of emission source 3 are toluene, ethylbenzene, and p-xylene, and the main pollutants of emission source 4 are methanol, styrene, and butadiene. Sort the pollutant concentrations emitted by the surrounding emission sources from large to small, and determine which emission source the pollutants come from based on the corresponding relationship of the load values of the above pollutants from large to small in the emission sources.

[0131] For the pollutant tracing method based on the mobile monitoring vehicle provided in this embodiment, when there are still sampling points where the specific emission source of the pollutant cannot be determined based on the above method, the principal component analysis method is used to continue the pollutant tracing, improving the tracing efficiency and ensuring the accuracy of the tracing.

[0132] Figure 3 is the complete flowchart of the pollutant tracing method based on the mobile monitoring vehicle provided in the embodiment of the present invention. Based on Figure 3 , the complete process of the pollutant tracing method based on the mobile monitoring vehicle provided by the present invention will be described:

[0133] 1. Control the mobile monitoring vehicle to perform multiple mobile monitoring in the target monitoring area according to the preset path to obtain multiple pollutant information;

[0134] 2. If the first pollutant is detected, the first emission source is determined as the emission source of the first pollutant;

[0135] If the first pollutant is not detected, the upwind sampling point and the downwind sampling point of the first target emission source are determined based on the wind direction of the sampling points in the multiple pollutant information.

[0136] 3. If the first concentration of the first target pollutant at the upwind sampling point of the first target emission source is less than the second concentration at the downwind sampling point, it is determined that the first target emission source emits the first target pollutant;

[0137] Repeat the above steps until each pollutant of each emission source has been judged according to the above steps.

[0138] 4. If the first concentration ratio of any two second target pollutants at the upwind sampling point of the second target emission source is the same as the second concentration ratio at the downwind sampling point; it is determined that the second target emission source does not emit the two second target pollutants;

[0139] If the first concentration ratio is different from the second concentration ratio, it is determined that the second target emission source is the emission source of at least one of the two second target pollutants.

[0140] 5. If the first sampling concentration ratio corresponding to the first target sampling point conforms to the target concentration ratio label of the target second emission source, and the target second emission source is located upwind of the first target sampling point, it is determined that the pollutants at the first target sampling point are emitted by the target second emission source.

[0141] 6. If the first sampling concentration ratio corresponding to the first target sampling point does not conform to the target concentration ratio label of the target second emission source, the mobile monitoring vehicle is controlled to monitor at the second target sampling point for a preset duration, and during the monitoring process, the pollutants at the second target sampling point are resampled to obtain the resampled pollutant information at multiple moments.

[0142] 7. If the second sampling concentration ratio at the target moment corresponding to the second target sampling point conforms to the concentration ratio label of the second emission source to be determined, and the resampled pollutant information at the target moment indicates that the second emission source to be determined is located upwind of the second target sampling point, it is determined that the pollutants at the second target sampling point are emitted by the second emission source to be determined.

[0143] 8. If the emission source still cannot be determined after performing the above steps, principal component analysis is performed on the resampled pollutant information at multiple moments to determine the emission source of the pollutants at the second target sampling point for which the emission source has not been determined.

[0144] The pollutant tracing method based on a mobile monitoring vehicle provided by the embodiments of the present invention, after collecting pollutant information in real time, sequentially executes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method in sequence. While achieving rapid tracing, it can ensure the accuracy of tracing and improve the tracing efficiency.

[0145] The pollutant tracing device based on a mobile monitoring vehicle provided by the present invention will be described below. The pollutant tracing device based on a mobile monitoring vehicle described below can be mutually referred to with the pollutant tracing method based on a mobile monitoring vehicle described above.

[0146] Figure 4 is a schematic structural diagram of the pollutant tracing device based on a mobile monitoring vehicle provided by the present invention, as Figure 4 shown, the pollutant tracing device based on a mobile monitoring vehicle provided by the present invention includes:

[0147] A sampling module 401, configured to control the mobile monitoring vehicle to perform multiple mobile monitoring in the target monitoring area according to a preset path, and perform pollutant sampling on multiple sampling points during the mobile monitoring to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point.

[0148] An analysis module 402 is configured to sequentially execute the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes a characteristic factor method, a concentration distribution method based on wind direction, a concentration ratio method, and a principal component analysis method.

[0149] The pollutant tracing device based on a mobile monitoring vehicle provided by the present invention controls the mobile monitoring vehicle to perform multiple mobile monitoring in a target monitoring area according to a preset path, and samples pollutants at multiple sampling points during the mobile monitoring to obtain multiple pollutant information. Among them, one sampling point samples one pollutant information, and each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point; sequentially execute the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined, wherein the method set includes a characteristic factor method, a concentration distribution method based on wind direction, a concentration ratio method, and a principal component analysis method. It can be seen that after the pollutant information is collected in real time, the present invention sequentially executes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method in sequence, which can ensure the accuracy of tracing while realizing rapid tracing and improve the tracing efficiency.

[0150] Based on the above embodiment, in this embodiment, the device further includes a setting module, which is specifically configured to:

[0151] Before sequentially executing the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined, obtain the historical pollutant information of each emission source in the target monitoring area and the historical concentration information of each pollutant.

[0152] Set characteristic labels for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant.

[0153] Based on the above embodiment, in this embodiment, the setting module is specifically configured to:

[0154] In the case where the first pollutant is the pollutant emitted by the first emission source, set a characteristic factor label corresponding to the first pollutant for the first emission source;

[0155] Wherein, the first emission source is the only emission source among the multiple emission sources that emits the first pollutant.

[0156] Based on the above embodiment, in this embodiment, the setting module is specifically configured to:

[0157] Calculate the concentration ratio of any two pollutants in the pollutants emitted by the second emission source based on the concentration of each pollutant in the pollutants emitted by the second emission source, and set a concentration ratio label corresponding to the concentration ratio for the second emission source based on the concentration ratio;

[0158] Wherein, the second emission source is an emission source among the multiple emission sources that emits multiple pollutants.

[0159] Based on the above embodiment, in this embodiment, the analysis module 402 is specifically configured to:

[0160] When the first pollutant is detected, determine the first emission source as the emission source of the first pollutant based on the characteristic factor label corresponding to the first pollutant.

[0161] Based on the above embodiment, in this embodiment, the analysis module 402 is specifically configured to:

[0162] For each wind direction, execute the wind direction-based concentration distribution method in the method set, including:

[0163] Determine the upwind sampling point and the downwind sampling point of the first target emission source based on the wind direction of the sampling point in the multiple pollutant information;

[0164] Determine the first concentration of the first target pollutant indicated by the pollutant information corresponding to the upwind sampling point of the first target emission source, and the second concentration of the first target pollutant indicated by the pollutant information corresponding to the downwind sampling point of the first target emission source;

[0165] When the first concentration is less than the second concentration, determine that the first target emission source emits the first target pollutant;

[0166] Repeat the above steps until each pollutant of each emission source is judged according to the above steps.

[0167] Based on the above embodiment, in this embodiment, the analysis module 402 is specifically configured to:

[0168] Determine the upwind sampling point and the downwind sampling point of the second target emission source based on the wind direction of the sampling point in the multiple pollutant information;

[0169] Determine the first concentration ratio of any two second target pollutants indicated by the pollutant information corresponding to the upwind sampling point of the second target emission source, and the second concentration ratio of the two second target pollutants indicated by the pollutant information corresponding to the downwind sampling point of the second target emission source;

[0170] When the first concentration ratio is the same as the second concentration ratio, it is determined that the second target emission source does not emit the two second target pollutants.

[0171] Based on the above embodiments, in this embodiment, the analysis module 402 is specifically configured to:

[0172] After determining the first concentration ratio of any two second target pollutants indicated by the pollutant information corresponding to the upwind sampling point of the second target emission source, and the second concentration ratio of the two second target pollutants indicated by the pollutant information corresponding to the downwind sampling point of the second target emission source, when the first concentration ratio is different from the second concentration ratio, it is determined that the second target emission source is the emission source of at least one of the two second target pollutants.

[0173] Based on the above embodiments, in this embodiment, the analysis module 402 is specifically configured to:

[0174] Determine a target second emission source in the second emission source, and determine a first target sampling point within the preset range of the target second emission source, and calculate the first sampling concentration ratio of any two pollutants in the pollutant information sampled at the first target sampling point;

[0175] Determine the target concentration ratio label corresponding to the target second emission source;

[0176] When the first sampling concentration ratio corresponding to the first target sampling point conforms to the target concentration ratio label corresponding to the target second emission source, and the target second emission source is located upwind of the first target sampling point, it is determined that the pollutants at the first target sampling point are emitted by the target second emission source.

[0177] Based on the above embodiments, in this embodiment, the analysis module 402 is specifically configured to:

[0178] Control the mobile monitoring vehicle to monitor at the second target sampling point for a preset duration, and re-sample the pollutants at the second target sampling point during the monitoring process to obtain the re-sampled pollutant information at multiple moments; wherein, the second target sampling point is a sampling point for pollutants with undetermined emission sources;

[0179] Calculate the second sampling concentration ratio of any two pollutants in the pollutant information sampled at the second target sampling point at multiple moments within a preset period;

[0180] Determine the second emission source to be determined within the preset range of the second target sampling point, and determine the concentration ratio label corresponding to the second emission source to be determined;

[0181] When the second sampling concentration at the target time corresponding to the second target sampling point conforms to the concentration ratio label corresponding to the second emission source to be determined, and the resampled pollutant information at the target time indicates that the second emission source to be determined is located upwind of the second target sampling point, it is determined that the pollutants at the second target sampling point are emitted by the second emission source to be determined; wherein, the target time is any time in the preset time period.

[0182] Based on the above embodiments, in this embodiment, the analysis module 402 is specifically configured to:

[0183] After controlling the mobile monitoring vehicle to monitor at the second target sampling point for a preset duration, and re-sampling pollutants at the second target sampling point during the monitoring process to obtain resampled pollutant information at multiple times;

[0184] Perform principal component analysis on the resampled pollutant information at the multiple times to determine the emission sources of the pollutants with undetermined emission sources at the second target sampling point.

[0185] Figure 5 An example of the physical structure diagram of an electronic device is shown as Figure 5 shown. The electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540. Among them, the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logical instructions in the memory 530 to execute the pollutant source tracing method based on the mobile monitoring vehicle. The method includes:

[0186] Control the mobile monitoring vehicle to perform multiple mobile monitoring operations in the target monitoring area according to a preset path, and sample pollutants at multiple sampling points during the mobile monitoring process to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point.

[0187] Sequentially execute the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on the wind direction, the concentration ratio method, and the principal component analysis method.

[0188] In addition, when the logical instructions in the above-mentioned memory 530 can be implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0189] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the pollutant source tracing method based on a mobile monitoring vehicle provided by the above-mentioned various methods. The method includes:

[0190] Controlling the mobile monitoring vehicle to perform multiple mobile monitoring operations in the target monitoring area according to a preset path, and performing pollutant sampling on multiple sampling points during the mobile monitoring process to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point;

[0191] Sequentially executing the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on the wind direction, the concentration ratio method, and the principal component analysis method.

[0192] On yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the pollutant source tracing method based on a mobile monitoring vehicle provided by the above-mentioned various methods. The method includes:

[0193] Controlling the mobile monitoring vehicle to perform multiple mobile monitoring operations in the target monitoring area according to a preset path, and performing pollutant sampling on multiple sampling points during the mobile monitoring process to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point;

[0194] Execute the methods in the method set in sequence until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method.

[0195] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0196] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0197] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for tracing the source of pollutants based on a mobile monitoring vehicle, characterized in that, it includes: Controlling the mobile monitoring vehicle to conduct multiple mobile monitoring according to a preset path in the target monitoring area, and sampling pollutants at multiple sampling points during the mobile monitoring to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information in the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point; Sequentially execute the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method.

2. The method for tracing the source of pollutants based on a mobile monitoring vehicle according to claim 1, characterized in that, Before sequentially executing the methods in the method set until the emission sources of each pollutant in the multiple pollutant information are determined, the method further includes: Obtaining the historical pollutant information of each emission source in the target monitoring area and the historical concentration information of each pollutant; Setting characteristic labels for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant.

3. The method for tracing the source of pollutants based on a mobile monitoring vehicle according to claim 2, characterized in that, Setting characteristic labels for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant includes: In the case where the first pollutant is the pollutant emitted by the first emission source, setting a characteristic factor label corresponding to the first pollutant for the first emission source; wherein, the first emission source is the only emission source among the multiple emission sources that emits the first pollutant.

4. The method for tracing the source of pollutants based on a mobile monitoring vehicle according to claim 2, characterized in that, Setting characteristic labels for each emission source based on the historical pollutant information of each emission source and the historical concentration information of each pollutant includes: Calculating the concentration ratio of any two pollutants in the pollutants emitted by the second emission source based on the concentration of each pollutant in the pollutants emitted by the second emission source, and setting a concentration ratio label corresponding to the concentration ratio for the second emission source based on the concentration ratio; wherein, the second emission source is an emission source among the multiple emission sources that emits multiple pollutants.

5. The method for tracing the source of pollutants based on a mobile monitoring vehicle according to claim 3, characterized in that, Executing the characteristic factor method in the method set includes: When the first pollutant is detected, based on the characteristic factor label corresponding to the first pollutant, determining the first emission source as the emission source of the first pollutant.

6. The method for tracing the source of pollutants based on a mobile monitoring vehicle according to claim 1, characterized in that, For each wind direction, executing the concentration distribution method based on wind direction in the method set includes: Determining the upwind sampling point and the downwind sampling point of the first target emission source based on the wind direction of the sampling point in the multiple pollutant information; Determine that the pollutant information corresponding to the upwind sampling point of the first target emission source indicates the first concentration of the first target pollutant, and the pollutant information corresponding to the downwind sampling point of the first target emission source indicates the second concentration of the first target pollutant; In the case where the first concentration is less than the second concentration, determine that the first target emission source emits the first target pollutant; Repeat the above steps until each pollutant of each emission source has been judged according to the above steps.

7. The pollutant tracing method based on a mobile monitoring vehicle according to claim 4, wherein, Performing the concentration ratio method in the method set includes: Based on the wind direction of the sampling points in the plurality of pollutant information, determine the upwind sampling point and the downwind sampling point of the second target emission source; Determine that the pollutant information corresponding to the upwind sampling point of the second target emission source indicates the first concentration ratio of any two second target pollutants, and the pollutant information corresponding to the downwind sampling point of the second target emission source indicates the second concentration ratio of the two second target pollutants; In the case where the first concentration ratio is the same as the second concentration ratio, determine that the second target emission source does not emit the two second target pollutants.

8. The pollutant tracing method based on a mobile monitoring vehicle according to claim 7, wherein, After determining that the pollutant information corresponding to the upwind sampling point of the second target emission source indicates the first concentration ratio of any two second target pollutants, and the pollutant information corresponding to the downwind sampling point of the second target emission source indicates the second concentration ratio of the two second target pollutants, the method further includes: In the case where the first concentration ratio is different from the second concentration ratio, determine that the second target emission source is the emission source of at least one of the two second target pollutants.

9. The pollutant tracing method based on a mobile monitoring vehicle according to claim 4, wherein, Performing the concentration ratio method in the method set further includes: Determine a target second emission source among the second emission sources, and determine a first target sampling point within a preset range of the target second emission source, and calculate the first sampling concentration ratio of any two pollutants in the pollutant information sampled at the first target sampling point; Determine the target concentration ratio label corresponding to the target second emission source; In the case where the first sampling concentration ratio corresponding to the first target sampling point conforms to the target concentration ratio label corresponding to the target second emission source, and the target second emission source is located upwind of the first target sampling point, determine that the pollutants at the first target sampling point are emitted by the target second emission source.

10. The pollutant tracing method based on a mobile monitoring vehicle according to claim 9, wherein, Performing the concentration ratio method in the method set further includes: Control the mobile monitoring vehicle to monitor at the second target sampling point for a preset duration, and re-sample pollutants at the second target sampling point during the monitoring process to obtain re-sampled pollutant information at multiple moments; wherein, the second target sampling point is a sampling point of pollutants for which the emission source has not been determined. Calculate the second sampling concentration ratio of any two pollutants in the pollutant information sampled at the second target sampling point at multiple moments within a preset time period; Determine the to-be-determined second emission source within the preset range of the second target sampling point, and determine the concentration ratio label corresponding to the to-be-determined second emission source; When the second sampling concentration ratio at the target moment corresponding to the second target sampling point conforms to the concentration ratio label corresponding to the to-be-determined second emission source, and the resampled pollutant information at the target moment indicates that the to-be-determined second emission source is located upwind of the second target sampling point, determine that the pollutants at the second target sampling point are emitted by the to-be-determined second emission source; wherein, the target moment is any moment within the preset time period.

11. The pollutant source tracing method based on a mobile monitoring vehicle according to claim 10, characterized in that Performing the principal component analysis method in the method set includes: After controlling the mobile monitoring vehicle to monitor at the second target sampling point for a preset duration, and during the monitoring process, re-sampling pollutants at the second target sampling point to obtain resampled pollutant information at multiple moments; Performing principal component analysis on the resampled pollutant information at the multiple moments to determine the emission source of the pollutants with undetermined emission sources at the second target sampling point.

12. A pollutant source tracing device based on a mobile monitoring vehicle, characterized in that it includes: A sampling module, configured to control the mobile monitoring vehicle to perform multiple mobile monitoring operations along a preset path in the target monitoring area, and sample pollutants at multiple sampling points during the mobile monitoring process to obtain multiple pollutant information; wherein, one sampling point samples one pollutant information; each pollutant information among the multiple pollutant information includes: the pollutant composition of the sampling point, the concentration information of each pollutant, and the wind direction of the sampling point; An analysis module, configured to sequentially execute the methods in the method set until the emission source of each pollutant in the multiple pollutant information is determined; wherein, the method set includes the characteristic factor method, the concentration distribution method based on wind direction, the concentration ratio method, and the principal component analysis method.

Images