CN111679041A - Method and device for monitoring pollutant discharge amount and terminal equipment - Google Patents
Method and device for monitoring pollutant discharge amount and terminal equipment Download PDFInfo
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Abstract
The application is suitable for the technical field of environmental monitoring, and provides a method, a device and a terminal device for monitoring pollutant discharge amount, wherein the method comprises the following steps: acquiring road information of a road to be monitored, and acquiring a target width of the road to be monitored based on the road information; acquiring environmental data of a road to be monitored, and acquiring a concentration mean value of at least one pollutant based on the environmental data; calculating the traffic pollutant emission of the road to be monitored based on the target width of the road to be monitored and the concentration mean value of the at least one pollutant; the method and the device utilize the target width of the road and the concentration mean value of the pollutants, so that the calculated discharge amount of the traffic pollutants is more accurate.
Description
Technical Field
The application belongs to the technical field of environmental monitoring, and particularly relates to a method and a device for monitoring pollutant discharge amount and terminal equipment.
Background
Along with the rapid advance of the urbanization process, the urban high-rise building groups are gradually increased. The adjacent high-rise buildings in the urban covering layer and the ground enclose a space similar to a canyon, which is called an urban street canyon. The urban street canyon is composed of streets and continuous buildings on two sides of the streets in a city, the buildings on two sides of the streets have a blocking effect on air flow, and along with the increase of the automobile exhaust emission in the streets and the weakening of the ventilation capacity of the streets, the air pollution in the streets is very serious, and the lives and health of residents are seriously affected, so that the real-time monitoring of the emission amount of pollutants communicated on the roads of the urban street canyon is very necessary.
At present, the method for calculating the pollutant discharge amount of the traffic on the road mostly obtains the number of vehicles running on the road, and estimates the pollutant discharge amount according to the number of the vehicles running. However, the amount of road pollutants emitted by the number of vehicles is inaccurate, and does not truly and accurately reflect the air condition of urban street canyons.
Disclosure of Invention
The embodiment of the application provides a method and a device for monitoring pollutant discharge amount and terminal equipment, and can solve the problem that the monitoring on the traffic pollutant discharge amount of urban street canyons is inaccurate at present.
In a first aspect, an embodiment of the present application provides a method for monitoring pollutant discharge amount, including:
acquiring road information of a road to be monitored, and acquiring a target width of the road to be monitored based on the road information;
acquiring environmental data of a region to be monitored acquired by acquisition equipment and a position of the region to be monitored when the environmental data are acquired;
taking environment data of the area to be monitored, corresponding to a position, within a fourth preset range, of a vertical distance between a target line segment and the environment data of the area to be monitored as environment data of the road to be monitored, wherein the target line segment is a line segment taking a starting point and an end point of the road to be monitored as end points;
obtaining a mean concentration value of at least one contaminant based on the environmental data;
and calculating the traffic pollutant emission of the road to be monitored based on the target width of the road to be monitored and the concentration mean value of the at least one pollutant.
In a second aspect, an embodiment of the present application provides a device for monitoring pollutant discharge amount, including:
the width determining module is used for acquiring road information of a road to be monitored and acquiring the target width of the road to be monitored based on the road information;
the concentration mean value determining module is used for acquiring environmental data of a road to be monitored and acquiring the concentration mean value of at least one pollutant based on the environmental information;
the emission amount determining module is used for calculating the emission amount of the traffic pollutants of the road to be monitored based on the target width of the road to be monitored and the concentration average value of the at least one pollutant;
the concentration mean value determination module comprises:
the information acquisition unit is used for acquiring the environmental data of the area to be monitored acquired by the acquisition equipment and the position of the acquired environmental data of the area to be monitored;
the environment data determining unit is used for acquiring the environment data of the road to be monitored according to the position of the acquired environment data of the area to be monitored and the road position information in the road information of the road to be monitored;
the environment data determination unit is to:
and taking the environmental data of the area to be monitored, corresponding to the position of the vertical distance between the environmental data of the area to be monitored and a target line segment within a fourth preset range, as the environmental data of the road to be monitored, wherein the target line segment is a line segment taking the starting point and the end point of the road to be monitored as end points.
In a third aspect, an embodiment of the present application provides a terminal device, including: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for monitoring pollutant emissions according to any one of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, where the computer program is executed by a processor to implement the method for monitoring pollutant emission amount according to any one of the above first aspects.
In a fifth aspect, the present application provides a computer program product, which when run on a terminal device, causes the terminal device to execute the method for monitoring pollutant emission amount according to any one of the first aspect.
It is understood that the beneficial effects of the second aspect to the fifth aspect can be referred to the related description of the first aspect, and are not described herein again.
Compared with the prior art, the embodiment of the application has the advantages that: the method comprises the steps of obtaining a target width of a road to be detected through road information, obtaining a concentration mean value of at least one pollutant through environmental data, and finally calculating the discharge amount of the traffic pollutants of the road to be detected through the target width and the concentration mean value of the at least one pollutant; the method and the device utilize the target width of the road and the concentration mean value of the pollutants, so that the calculated discharge amount of the traffic pollutants is more accurate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of an application scenario of a method for monitoring pollutant emission according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a method for monitoring pollutant emissions according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a method for determining road information according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the positions of a road to be monitored and a target building according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a method for determining environmental data according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of determining a target wind speed based on wind speed provided by an embodiment of the present application;
fig. 7 is a schematic structural diagram of a device for monitoring pollutant discharge amount according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
At present, most of researches on the discharge amount of traffic pollutants are carried out on the measurement and calculation of the discharge amount of road traffic according to road traffic flow data and motor vehicle discharge factors, for example, vehicle discharge factors are obtained and the road discharge amount is calculated based on discharge models such as move, COPERT and the like, but the calculation methods based on the discharge models need a large amount of basic data support including traffic flow data, discharge factor data and the like, and the traffic flow data are difficult to obtain in real time, so that the monitoring requirement on the discharge amount of urban street traffic is difficult to achieve. And the data obtained by calculating the discharge amount of the traffic pollutants according to the traffic flow data is inaccurate and cannot truly reflect the current air condition.
Fig. 1 is a schematic view of an application scenario of a monitoring method for pollutant emission provided in an embodiment of the present application, where the monitoring method for pollutant emission can be used to calculate the amount of emission of traffic pollutants. The data acquisition device 10 is used for acquiring road information and environmental data of a road to be detected, and the terminal device 20 is used for acquiring the road information and the environmental data of the road to be detected from the data acquisition device 10, and processing the road information and the environmental data of the road to be detected to obtain the traffic pollutant emission of the road to be monitored.
The method for monitoring the amount of pollutants emitted in the embodiment of the present application is described in detail below with reference to fig. 1.
Fig. 2 shows a schematic flow chart of a method for monitoring pollutant emission provided by the present application, and with reference to fig. 2, the method is described in detail as follows:
s101, acquiring road information of a road to be monitored, and acquiring the target width of the road to be monitored based on the road information.
In the present embodiment, the road to be monitored refers to an urban street canyon, that is, a canyon-type street. The road information refers to road position information of a road to be monitored and building position information of a target building on the road to be monitored. In this embodiment, the road location information may include a start point coordinate, an end point coordinate of the road to be monitored, and a width of the road to be monitored, where the coordinates may be longitude and latitude coordinates, or coordinates on a map where the road to be monitored is located. If the start point coordinate and the end point coordinate of the road to be monitored refer to coordinates on a map, and the real coordinate of the road to be monitored needs to be obtained, the coordinates on the map can be obtained through coordinate conversion. The building location information may include the footprint, shape, height of the building, and coordinates of each vertex in the projection of the building or the coordinates of each vertex where the building meets the ground.
In this embodiment, the road information of the road to be monitored may be captured by using a camera, a map of the road to be monitored is then established, and the road information of the road to be monitored is obtained according to the map. The measurement results can also be stored in a server by artificial measurement and acquired from the server as needed. The method can also acquire image data of the road to be monitored shot by the camera, and the image data is identified and processed to obtain road information, wherein the processing of the image data can comprise coordinate conversion, threshold segmentation, extraction of a communicated region and the like.
In this embodiment, a general building is not built at a position adjacent to both sides of a road, and an idle zone, for example, a green zone, is provided between the road and the building, so that the actual width of the road to be monitored, that is, the target width is the width of the road and the width of the idle zone, and the actual width is larger than the acquired width of the road, and the acquired width of the road needs to be corrected to calculate the target width of the road to be monitored, so that the calculated discharge amount of traffic pollutants can be more accurate.
S102, obtaining environmental data of a road to be monitored, and obtaining a concentration mean value of at least one pollutant based on the environmental data.
In this embodiment, environmental data can be followed and gathered in the equipment, and gathering equipment can be portable monitoring vehicle, is equipped with air quality sensor, meteorological sensor and GPS positioner on the portable monitoring vehicle, obtains air quality data through air quality sensor, obtains meteorological data through meteorological sensor, fixes a position portable monitoring vehicle's position through GPS positioner. The mobile monitoring vehicle can move on the road, collects data while moving, and can measure accurate dynamic environment data. The collecting device can also be a fixed monitoring device arranged around the road, and the environmental data can be obtained through the fixed monitoring device.
The environmental data may include pollutant concentrations of various pollutants, wind speed, wind direction, rainfall, air pressure, humidity, position and speed when the collecting device collects the environmental data of the area to be monitored, and the like, for example, the position may be longitude and latitude when the collecting device collects the environmental data of the area to be monitored.
The environmental data on one road to be monitored can be data of a plurality of different positions, and can be obtained by collecting for a plurality of times, for example, preset time can be set, and the environmental data can be collected at the preset time, wherein the preset time can be collected once every one second.
For example, the mobile monitoring vehicle collects first environment data at a point a of the road W at point 2, 10, and collects second environment data at a point B of the road W at point 2, 11, where the first environment data and the second environment data are both environment data of the road W.
In this embodiment, the mean concentration of the pollutant refers to the average concentration of the pollutant in all the environmental data collected on the road to be monitored, that is, the mean concentration of the pollutant on the road to be monitored.
S103, calculating the discharge amount of the traffic pollutants of the road to be monitored based on the target width of the road to be monitored and the concentration mean value of the at least one pollutant.
In this embodiment, a calculation model of the discharge amount of the traffic pollutants is obtained based on an inverse calculation method and fluid mechanics, and the discharge amount of each pollutant is calculated based on the calculation model, the target width, and the concentration mean value. The discharge amount of the traffic pollutants is composed of discharge amounts of various pollutants, and the discharge amount of each pollutant can be one of the discharge amounts of the traffic pollutants.
In this embodiment, the amount of traffic pollutants emitted may be the intensity of the traffic emissions over a period of time, for example, within one hour or within two hours. After the monitoring of one section of road is finished, the traffic pollutant discharge amount in the next road can be continuously monitored, and the monitoring time difference of adjacent road sections can be reduced.
After the monitoring of the traffic pollutant emission amount of a plurality of roads to be monitored is completed, the traffic pollutant emission amount of the plurality of roads to be monitored can be compared, the contrast information of each road to be monitored is obtained, and data support is provided for traffic pollution control.
In the embodiment of the application, the target width of the road to be detected is obtained through road information, the concentration mean value of at least one pollutant is obtained through environmental data, and finally the traffic pollutant emission amount of the road to be detected is calculated through the target width and the concentration mean value of at least one pollutant; the method and the device utilize the target width of the road and the concentration mean value of the pollutants, increase the target width of the road, not only calculate the emission of the traffic pollutants by utilizing the concentration of the pollutants, but also enable the calculated emission of the traffic pollutants to be more accurate.
As shown in fig. 3, in a possible implementation manner, the implementation process of acquiring the road information in step S101 may include:
s1011, acquiring road position information of a road to be monitored and building position information of target buildings on two sides of the road to be monitored, wherein the target buildings are buildings of which the distance from the road to be monitored is within a first preset range.
In this embodiment, the target building may be the closest row of buildings to the road to be monitored. The first predetermined range may be set as desired, for example, 0-5 meters or 3-6 meters. The distance between the building and the road to be monitored can be the distance between a point in the projection of the building and a central line in the length direction of the road to be monitored; or the distance of a point in the projection of the building from the side of the road to be monitored.
In this embodiment, acquiring the building location information of the target buildings on both sides of the road to be monitored includes:
acquiring building position information of buildings in an area to be monitored;
building position information of a target building is determined based on building position information of buildings in the area to be monitored and road position information of a road to be monitored.
In this embodiment, the area to be monitored is an area including a road to be monitored, and the area to be monitored is greater than or equal to the road to be monitored, for example, the area to be monitored may be the road to be monitored and an area communicated with the road to be monitored, or an urban area where the road to be monitored is located.
The buildings in the area to be monitored comprise buildings on two sides of the road to be monitored and possibly buildings on two sides of other roads, so that the buildings on two sides of the road to be monitored are obtained by matching the building position information of the buildings with the road position information of the road to be monitored, and finally the buildings with the distance to the road to be monitored within a first preset range are used as target buildings. Specifically, the buildings within the first preset range may include all buildings whose portions are within the first preset range, may include only some buildings within the first preset range, and may also be a row of buildings closest to the road to be monitored.
As an example, if the distances between all points on the building B and the road to be monitored are within the first preset range, the building B is the target building. If the distance between some points on the building C and the road to be monitored is not within the first preset range, but the distance between some points on the building C and the road to be monitored is within the first preset range, the building C is the target building.
Specifically, the matching process according to the building position information of the building and the road position information of the road in the area to be monitored may be that a map of the road is drawn according to the start point coordinate and the end point coordinate of the road, then the building is placed at a corresponding position on the map according to the coordinates of the building, the buildings located at both sides of the road are obtained, and the buildings located at both sides of the road to be monitored, which satisfy a first preset range, are searched for as target buildings.
And S1012, taking the road position information of the road to be monitored and the building position information as the road information of the road to be monitored.
In this embodiment, the road information of the road to be monitored includes both the road position information and the building position information of the target buildings on both sides of the road, so as to prepare for the subsequent calculation of the target width of the road to be monitored.
For example, each road to be monitored and corresponding road information may be stored in association, and an information table may be drawn, specifically as shown in the following table:
| name of field | Meaning of a field |
| Road ID | Canyon type road numbering |
| Road name | Canyon type road name |
| Starting point | Longitude and latitude coordinates of road starting point |
| Terminal point | Road end longitude and latitude coordinates |
| Width of | Width of road |
| Target building 1 height | Height of the street building 1 |
| Target building 2 height | Height of the buildings 2 |
| Target building 3 height | Height of the buildings 3 |
| …… | …… |
As shown in fig. 4, in a possible implementation manner, the implementation process of calculating the target width in step S101 may include:
and S1013, calculating the sum of first distances between first target vertexes of target buildings located on the first side of the road to be monitored and the center line of the road to be monitored in the length direction, wherein the first target vertexes are vertexes of the projection of the target buildings on the first side, and the distances between the vertexes and the center line are within a second preset range.
In this embodiment, the second preset range may be set as desired, for example, 0 to 5 meters. The first target vertex may be a vertex closest to the center line or a vertex closest to a side edge of the road to be monitored among vertices of the projection of the target building on the first side, and the first target vertex on one target building may be one, two, three, or the like, and generally two vertices closest to the center line.
S1014, calculating a first ratio of the sum of the first distances to the total number of the first target vertexes.
And S1015, calculating a sum of a second distance between a second target vertex of the target building located on the second side of the road to be monitored and the center line of the road to be monitored in the length direction, wherein the second target vertex is a vertex of the projection of the target building on the second side, the distance between which and the center line is within a third preset range.
In this embodiment, the third preset range may be set as desired, for example, 1-5 meters. The second target vertex may be the vertex closest to the center line or the vertex closest to the side edge of the road to be monitored among the vertices of the projection of the target building on the second side, and the second target vertices on one target building may be one, two, three, or the like, typically the two vertices closest to the center line.
The second predetermined range and the third predetermined range may be the same or different.
S1016, calculating a second ratio of the sum of the second distances to the total number of the second target vertexes.
S1017, taking the sum of the first ratio and the second ratio as the target width.
By way of example, the target width may also be calculated by a formula
Wherein, W is the target width,athe total number of first vertexes with the distance of the second preset range from the central line in the vertexes of the projection of the target building on the first side of the road to be monitored,bthe total number of second vertexes with the distance of the second vertex in the third preset range from the central line in the vertexes of the projection of the target building on the second side of the road to be monitored,W c is the distance between the c-th first vertex and the central line in the length direction of the road to be monitored,
is the sum of the distances from the a first vertices to the center line in the length direction of the road to be monitored,W d is the distance between the d-th second vertex and the central line in the length direction of the road to be monitored,
is the sum of the distances from the b second vertices to the center line in the length direction of the road to be monitored.
As shown in fig. 5, in a possible implementation manner, the process of acquiring the environmental data of the road to be monitored in step S102 may include:
and S1021, acquiring the environmental data of the area to be monitored acquired by the acquisition equipment and the position of the acquisition equipment when acquiring the environmental data of the area to be monitored.
In the present embodiment, the area to be monitored may be one area including a wide range of roads to be monitored. The acquisition device has a position when acquiring the environmental data, and the position when acquiring the environmental data of the area to be monitored is where in which position the acquired environmental data is.
And S1022, acquiring the environmental data of the road to be monitored according to the position when the environmental data of the area to be monitored is acquired and the road position information in the road information of the road to be monitored.
In this embodiment, which position of the road the collection device is located when collecting the environmental data may be determined according to the position of the collection device when collecting the environmental data of the area to be monitored and the road position information, and the environmental data corresponding to the position located within the fourth preset range is used as the environmental data of the road to be monitored.
In one possible implementation manner, the implementation procedure of step S1022 may include:
and taking the environmental data of the area to be monitored, corresponding to the position of the vertical distance between the environmental data of the area to be monitored and a target line segment within a fourth preset range, as the environmental data of the road to be monitored, wherein the target line segment is a line segment taking the starting point and the end point of the road to be monitored as end points.
In this embodiment, the start point coordinate and the end point coordinate of the road to be monitored are known, and a line segment with the left of the start point coordinate and the left of the end point as an end point can be obtained and recorded as a target line segment. The target line segment may be a line segment on a center line in the length direction of the road to be monitored.
In this embodiment, the fourth preset range may be set as needed, for example, the fourth preset range may be the width of a road. Any environmental data collected within the fourth preset range can be used as the environmental data of the road to be monitored.
In one possible implementation manner, the implementation procedure of step S1022 may include:
and taking the environmental data corresponding to the position of the acquisition equipment in the preset position range when the environmental data are acquired as the environmental data of the road to be monitored, wherein the preset position range comprises the position of the road to be monitored.
In this embodiment, the preset position range may be set with a square or circular area centered on or centered on the road to be monitored, and the environmental data corresponding to the position falling within the preset position range is used as the environmental information of the road to be monitored.
In one possible implementation manner, the implementation process of calculating the mean concentration of the contaminants in step S102 may include:
based on the formula
Obtaining a mean concentration of at least one contaminant, wherein,C i is the mean value of the concentration of the ith pollutant,mthe number of times of collection of the ith pollutant,C in for the contaminant concentration of the ith contaminant from the nth collection,
n is more than or equal to 1 and less than or equal to m, and is the sum of the pollutant concentrations of the ith pollutants collected for m times.
In this embodiment, the environmental data includes the contaminant concentration of one or more contaminants. The environmental data may be collected for a plurality of times on a road to be monitored, and the pollutant concentrations of the same pollutant collected at different time and different positions are different, so that a plurality of different pollutant concentrations of the same pollutant may be obtained by collecting the environmental data for a plurality of times, and therefore, the concentration mean value of each pollutant on the road to be monitored needs to be calculated.
Specifically, all the collected concentration values of the same pollutant are added, then the ratio of the added concentration values to the number of the concentration values is calculated, and finally the obtained ratio is used as the concentration mean value of the pollutant on the road to be monitored. A contaminant may be calculated as a mean concentration.
In a possible implementation manner, the implementation process of step S103 may include:
and S1031, calculating a target wind speed based on the wind speed and the wind direction, wherein the target wind speed is the wind speed in the width direction of the road to be monitored.
In this embodiment, when the environmental data is collected, the collected environmental data further includes a wind speed and a wind direction on the road, and since the wind speed acting when calculating the pollutant discharge amount is only the wind speed in the direction perpendicular to the length direction of the road, that is, only the wind speed in the width direction of the road has an influence on the calculation of the pollutant discharge amount, the wind speed in the width direction of the road to be monitored needs to be calculated according to the wind speed and the wind direction.
Specifically, as shown in FIG. 6, the formula can be based on
Calculating the target wind speed, wherein,u x in order to be the target wind speed,uin order to collect the wind speed,өand the collected wind direction forms an included angle with the length direction of the road to be monitored.
It should be noted that, if the wind speed and the wind direction are different in the environment data acquired a plurality of times, the target wind speed is the average wind speed in the width direction.
S1032, based on the formula
Calculating the pollutant emission amount of at least one pollutant and taking the pollutant emission amount of the at least one pollutant as the traffic pollutant emission amount of the road to be monitored, wherein,Q j is the pollutant emission amount of the jth pollutant,C j is the mean value of the concentration of the jth contaminant,u x in order to obtain the target wind speed,Wfor the target width of the road to be monitored,Lfor the length, σ, of the road to be monitored0And the asymmetric coefficient is the road to be monitored.
In this embodiment, one pollutant corresponds to one pollutant emission amount, different task-free pollutant emission amounts can be calculated as required, and the pollutant emission amounts of different pollutants form the traffic pollutant emission amount of the road to be monitored.
Formula (II)
The method is obtained based on an inversion calculation method and fluid mechanics calculation, and can enable the calculated pollutant discharge amount to be more accurate.
In the embodiment of the application, after the collected wind speed is corrected, the target wind speed is obtained, the pollutant discharge amount is calculated by using the calculation model based on the target wind speed, the target width and the length of the road to be monitored, the target width and the length of the road are introduced, the pollutant concentration is not only used for calculation, and the obtained pollutant discharge amount is more accurate.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 7 shows a block diagram of a device for monitoring the amount of pollutant emission provided in the embodiment of the present application, corresponding to the method for monitoring the amount of pollutant emission described in the above embodiment, and only the parts related to the embodiment of the present application are shown for convenience of illustration.
Referring to fig. 7, the apparatus 100 may include: a width determination module 210, a concentration mean determination module 220, and an emissions determination module 230.
The width determining module 210 is configured to obtain road information of a road to be monitored, and obtain a target width of the road to be monitored based on the road information;
the concentration mean value determining module 220 is configured to obtain environmental data of a road to be monitored, and obtain a concentration mean value of at least one pollutant based on the environmental data;
and the emission amount determining module 230 is configured to calculate the amount of the emission of the traffic pollutants on the road to be monitored based on the target width of the road to be monitored and the mean concentration value of the at least one pollutant.
In one possible implementation, the width determining module 210 may be specifically configured to:
acquiring road position information of a road to be monitored and building position information of target buildings on two sides of the road to be monitored, wherein the target buildings are buildings of which the distance from the road to be monitored is within a first preset range;
and taking the road position information of the road to be monitored and the building position information as the road information of the road to be monitored.
In a possible implementation manner, the width determining module 210 may be further specifically configured to:
calculating the sum of first distances between a first target vertex of a target building on a first side of the road to be monitored and a center line of the road to be monitored in the length direction, wherein the first target vertex is a vertex of a projection of the target building on the first side, and the distance between the vertex and the center line is within a second preset range;
calculating a first ratio of the sum of the first distances to the total number of the first target vertices;
calculating the sum of a second distance between a second target vertex of a target building located on a second side of the road to be monitored and a center line of the road to be monitored in the length direction, wherein the second target vertex is a vertex of a projection of the target building on the second side, and the distance between the vertex and the center line is within a third preset range;
calculating a second ratio of the sum of the second distances to the total number of second target vertices;
taking the sum of the first ratio and the second ratio as the target width.
In a possible implementation manner, the concentration mean value determining module 220 may specifically include:
the information acquisition unit is used for acquiring the environmental data of the area to be monitored acquired by the acquisition equipment and the position of the acquired environmental data of the area to be monitored;
and the environment data determining unit is used for acquiring the environment data of the road to be monitored according to the position when the environment data of the area to be monitored is acquired and the road position information in the road information of the road to be monitored.
In a possible implementation manner, the environment data determining unit may specifically be configured to:
and taking the environmental data of the area to be monitored, corresponding to the position of the vertical distance between the environmental data of the area to be monitored and a target line segment within a fourth preset range, as the environmental data of the road to be monitored, wherein the target line segment is a line segment taking the starting point and the end point of the road to be monitored as end points.
In one possible implementation, the environmental data includes a pollutant concentration of the pollutant, and the mean concentration determination module 220 may specifically include:
a calculation unit for calculating a formula based on
Obtaining a mean concentration of at least one contaminant, wherein,C i is the mean value of the concentration of the ith pollutant,mthe number of times of collection of the ith pollutant,C in for the contaminant concentration of the ith contaminant from the nth collection,
n is more than or equal to 1 and less than or equal to m, and is the sum of the pollutant concentrations of the ith pollutants collected for m times.
In a possible implementation manner, the environment data further includes a wind speed and a wind direction on the road to be monitored, and the road information includes a length of the road;
the emission determination module 230 may be specifically configured to:
calculating a target wind speed based on the wind speed and the wind direction, wherein the target wind speed is a wind speed in a width direction of the road;
based on the formula
Calculating the pollutant emission amount of at least one pollutant and taking the pollutant emission amount of the at least one pollutant as the traffic pollutant emission amount of the road to be monitored, wherein,Q j is the pollutant emission amount of the jth pollutant,C j is the mean value of the concentration of the jth contaminant,u x in order to obtain the target wind speed,Wfor the target width of the road to be monitored,Lfor the length, σ, of the road to be monitored0And the asymmetric coefficient is the road to be monitored.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
An embodiment of the present application further provides a terminal device, and referring to fig. 8, the terminal device 400 may include: at least one processor 410, a memory 420, and a computer program stored in the memory 420 and executable on the at least one processor 410, wherein the processor 410 when executing the computer program implements the steps of any of the method embodiments described above, such as the steps S101 to S103 in the embodiment shown in fig. 2. Alternatively, the processor 410, when executing the computer program, implements the functions of the modules/units in the above-described device embodiments, such as the functions of the modules 210 to 230 shown in fig. 7.
Illustratively, a computer program may be partitioned into one or more modules/units, which are stored in the memory 420 and executed by the processor 410 to accomplish the present application. The one or more modules/units may be a series of computer program segments capable of performing specific functions, which are used to describe the execution of the computer program in the terminal device 400.
Those skilled in the art will appreciate that fig. 8 is merely an example of a terminal device and is not limiting and may include more or fewer components than shown, or some components may be combined, or different components such as input output devices, network access devices, buses, etc.
The Processor 410 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 420 may be an internal storage unit of the terminal device, or may be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. The memory 420 is used for storing the computer programs and other programs and data required by the terminal device. The memory 420 may also be used to temporarily store data that has been output or is to be output.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The method for monitoring the pollutant discharge amount provided by the embodiment of the application can be applied to terminal equipment such as a computer, a tablet computer, a notebook computer, a netbook, a Personal Digital Assistant (PDA) and the like, and the embodiment of the application does not limit the specific type of the terminal equipment.
The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in the various embodiments of the method for monitoring pollutant emissions can be implemented.
The embodiment of the application provides a computer program product, and when the computer program product runs on a mobile terminal, the steps in each embodiment of the monitoring method for the pollutant emission amount can be realized when the mobile terminal is executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer Memory, Read-Only Memory (ROM), random-access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (8)
1. A method for monitoring the amount of pollutants discharged, comprising:
acquiring road information of a road to be monitored, and acquiring a target width of the road to be monitored based on the road information;
acquiring environmental data of a region to be monitored acquired by acquisition equipment and a position of the region to be monitored when the environmental data are acquired;
taking environment data of the area to be monitored, corresponding to a position, within a fourth preset range, of a vertical distance between a target line segment and the environment data of the area to be monitored as environment data of the road to be monitored, wherein the target line segment is a line segment taking a starting point and an end point of the road to be monitored as end points;
obtaining a concentration mean value of at least one pollutant based on the environmental data of the road to be monitored;
and calculating the traffic pollutant emission of the road to be monitored based on the target width of the road to be monitored and the concentration mean value of the at least one pollutant.
2. The method for monitoring the amount of pollutant emission according to claim 1, wherein the acquiring the road information of the road to be monitored comprises:
acquiring road position information of a road to be monitored and building position information of target buildings on two sides of the road to be monitored, wherein the target buildings are buildings of which the distance from the road to be monitored is within a first preset range;
and taking the road position information of the road to be monitored and the building position information as the road information of the road to be monitored.
3. The method for monitoring the amount of pollutant emissions according to claim 2, wherein said obtaining the target width of the road to be monitored based on the road information comprises:
calculating the sum of first distances between a first target vertex of a target building on a first side of the road to be monitored and a center line of the road to be monitored in the length direction, wherein the first target vertex is a vertex of a projection of the target building on the first side, and the distance between the vertex and the center line is within a second preset range;
calculating a first ratio of the sum of the first distances to the total number of the first target vertices;
calculating the sum of a second distance between a second target vertex of a target building located on a second side of the road to be monitored and a center line of the road to be monitored in the length direction, wherein the second target vertex is a vertex of a projection of the target building on the second side, and the distance between the vertex and the center line is within a third preset range;
calculating a second ratio of the sum of the second distances to the total number of second target vertices;
taking the sum of the first ratio and the second ratio as the target width.
4. The method of monitoring the amount of pollutants emitted according to claim 1, wherein the environmental data includes the pollutant concentration of the pollutants;
the obtaining of the mean concentration of at least one pollutant based on the environmental data of the road to be monitored comprises:
based on the formula
Obtaining a mean concentration of at least one contaminant, wherein,C i is the mean value of the concentration of the ith pollutant,mthe number of times of collection of the ith pollutant,C in for the contaminant concentration of the ith contaminant from the nth collection,
n is more than or equal to 1 and less than or equal to m, and is the sum of the pollutant concentrations of the ith pollutants collected for m times.
5. The method for monitoring an amount of pollutant emissions according to any one of claims 1 to 4, wherein said environmental data further comprises a wind speed and a wind direction on said road to be monitored, and said road information comprises a length of said road;
the calculating the traffic pollutant emission amount of the road to be monitored based on the target width of the road to be monitored and the concentration mean value of the at least one pollutant comprises the following steps:
calculating a target wind speed based on the wind speed and the wind direction, wherein the target wind speed is a wind speed in a width direction of the road;
based on the formula
Calculating the pollutant emission amount of at least one pollutant and taking the pollutant emission amount of the at least one pollutant as the traffic pollutant emission amount of the road to be monitored, wherein,Q j is the pollutant emission amount of the jth pollutant,C j is the mean value of the concentration of the jth contaminant,u x in order to obtain the target wind speed,Wfor the target width of the road to be monitored,Lfor the length, σ, of the road to be monitored0And the asymmetric coefficient is the road to be monitored.
6. A device for monitoring the amount of emission of pollutants, comprising:
the width determining module is used for acquiring road information of a road to be monitored and acquiring the target width of the road to be monitored based on the road information;
the concentration mean value determining module is used for acquiring environmental data of a road to be monitored and acquiring the concentration mean value of at least one pollutant based on the environmental data;
the emission amount determining module is used for calculating the emission amount of the traffic pollutants of the road to be monitored based on the target width of the road to be monitored and the concentration average value of the at least one pollutant;
the concentration mean value determination module comprises:
the information acquisition unit is used for acquiring the environmental data of the area to be monitored acquired by the acquisition equipment and the position of the acquired environmental data of the area to be monitored;
the environment data determining unit is used for acquiring the environment data of the road to be monitored according to the position of the acquired environment data of the area to be monitored and the road position information in the road information of the road to be monitored;
the environment data determination unit is to:
and taking the environmental data of the area to be monitored, corresponding to the position of the vertical distance between the environmental data of the area to be monitored and a target line segment within a fourth preset range, as the environmental data of the road to be monitored, wherein the target line segment is a line segment taking the starting point and the end point of the road to be monitored as end points.
7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for monitoring the amount of emission of pollutants according to any one of claims 1 to 5 when executing the computer program.
8. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method for monitoring an amount of pollutant emissions according to any one of claims 1 to 5.
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