CN112418211A - Identification method, device, equipment and storage medium for dangerous chemical substance dangerous area - Google Patents

Identification method, device, equipment and storage medium for dangerous chemical substance dangerous area Download PDF

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CN112418211A
CN112418211A CN201910782572.2A CN201910782572A CN112418211A CN 112418211 A CN112418211 A CN 112418211A CN 201910782572 A CN201910782572 A CN 201910782572A CN 112418211 A CN112418211 A CN 112418211A
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map grid
area
weight
grid unit
dangerous
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CN112418211B (en
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丁芙蓉
张灯
金豪
虞红伟
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Hangzhou Hikvision System Technology Co Ltd
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Hangzhou Hikvision System Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/083—Shipping
    • G06Q10/0832—Special goods or special handling procedures, e.g. handling of hazardous or fragile goods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
    • G06Q10/083—Shipping
    • G06Q10/0833—Tracking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

Abstract

The invention provides a method, a device, equipment and a storage medium for identifying dangerous chemical substance dangerous areas. The method comprises the following steps: acquiring a plurality of map grid units of an area to be identified; determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit; determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified; and determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit. According to the dangerous chemical substance weight and the crowd weight corresponding to the map grid units of the area to be identified, whether the area corresponding to each map grid unit is a dangerous area or not can be determined, and data support can be provided for traffic safety supervision.

Description

Identification method, device, equipment and storage medium for dangerous chemical substance dangerous area
Technical Field
The invention relates to the technical field of intelligent transportation, in particular to a method, a device, equipment and a storage medium for identifying dangerous chemical substance dangerous areas.
Background
Hazardous chemicals refer to highly toxic chemicals or other chemicals with properties of toxicity, corrosion, explosion, combustion supporting and the like and having harm to human bodies, facilities and environment. The dangerous chemical substance transport vehicle is a truck engaged in dangerous chemical substance cargo transportation, and the safety problem of the vehicle is always the focus of national and social attention and is particularly important in traffic safety supervision.
Since many safety accidents have been caused by improper storage and transportation of dangerous chemicals, it is highly desirable for those skilled in the art to implement a method for identifying dangerous areas of dangerous chemicals.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for identifying dangerous chemical substance dangerous areas, which aim to realize identification of dangerous chemical substance dangerous areas.
In a first aspect, the present invention provides a method for identifying a hazardous area of a hazardous chemical, including:
acquiring a plurality of map grid units of an area to be identified;
determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit;
determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified;
and determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit.
In a second aspect, the present invention provides an apparatus for identifying a dangerous area of a hazardous chemical, including:
the system comprises an acquisition module, a recognition module and a recognition module, wherein the acquisition module is used for acquiring a plurality of map grid units of an area to be recognized;
the first determining module is used for determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit;
the second determining module is used for determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified;
and the processing module is used for determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit.
In a third aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the method described in any one of the first aspect.
In a fourth aspect, an embodiment of the present invention provides an electronic device, including:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of the first aspects via execution of the executable instructions.
According to the identification method, the identification device, the identification equipment and the storage medium for the dangerous chemical substance dangerous area, provided by the embodiment of the invention, a plurality of map grid units of an area to be identified are obtained; determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit; determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified; according to the dangerous chemical weight and the crowd weight of each map grid unit, whether the area corresponding to each map grid unit is a dangerous area or not is determined, and according to the dangerous chemical weight and the crowd weight corresponding to a plurality of map grid units of the area to be identified, whether the area corresponding to each map grid unit is a dangerous area or not can be determined, so that data support can be provided for traffic safety supervision.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for identifying a dangerous area of a hazardous chemical substance according to the present invention;
FIG. 2 is a schematic diagram of a map grid cell in accordance with an embodiment of the method provided by the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an apparatus for identifying a dangerous area of a hazardous chemical substance provided in the present invention;
fig. 4 is a schematic structural diagram of an embodiment of an electronic device provided in the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terms "comprising" and "having," and any variations thereof, in the description and claims of this invention and the drawings described herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
First, the nouns and application scenarios related to the present invention are introduced:
the map grid unit is a grid area which divides a drawing area according to plane coordinates or longitude and latitude.
And the dangerous chemical substance weight represents the number of dangerous chemical substance transport vehicles corresponding to each map grid unit, and the more dangerous chemical substance transport vehicles corresponding to the map grid units, the greater the dangerous chemical substance weight. The dangerous chemical substance transport vehicle corresponding to the map grid unit refers to that the running track of the dangerous chemical substance transport vehicle passes through the area corresponding to the map grid unit, or the dangerous chemical substance transport vehicle stops in the area corresponding to the map grid unit.
The distribution data of the crowd refers to the distribution data of the crowd in the map grid units, and comprises the corresponding heat value of each map grid unit.
And the heat value is used for representing the number of the people in the area corresponding to the map grid unit.
And the crowd weight represents the number of the crowd in the corresponding area of each map grid unit, and the crowd weight is larger when the number is larger.
The identification method of the dangerous area of the hazardous chemical substance provided by the embodiment of the invention is applied to the scene of safety supervision of the hazardous chemical substance, such as the scene of identification of the dangerous area where the hazardous chemical substance is located, so as to improve the safety of city management and provide data support for traffic safety supervision.
Compared with the nature of dangerous chemicals such as inflammable and explosive degree, toxicity degree and the like, the distance between the dangerous chemicals and people is a factor which can threaten the safety of lives and properties of people. Therefore, the method of the embodiment of the invention determines whether the area corresponding to the map grid unit is a dangerous area or not by determining the weight of dangerous chemicals and the weight of people of different map grid units, and provides decision-making guidance data support for traffic safety supervision of cities.
The method provided by the invention can be realized by the electronic equipment such as a processor executing corresponding software codes, and can also be realized by the electronic equipment performing data interaction with a server while executing the corresponding software codes, for example, the server performs part of operations to control the electronic equipment to execute the identification method.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic flow chart of an embodiment of a method for identifying a dangerous area of a hazardous chemical substance according to the present invention. As shown in fig. 1, the method provided by this embodiment includes:
step 101, obtaining a plurality of map grid cells of an area to be identified.
Wherein, the step 101 can be specifically realized by adopting the following mode:
determining the latitude and longitude range of the area to be identified;
and dividing the area to be identified into a plurality of sub-areas according to the longitude and latitude range of the area to be identified and preset longitude intervals and latitude intervals, wherein the sub-areas correspond to the map grid units one by one.
Specifically, a map of the area to be identified is divided into a plurality of map grid cells. For example, a latitude and longitude range of the area to be identified is selected, a latitude interval and a longitude interval are set, and then the map of the area to be identified is divided into a plurality of map grid units, as shown in fig. 2, I rows and J columns are divided in fig. 2, and I × J map grid units are formed. The map grid cells may be identified as follows: the sequence number + coordinates, for example, the lower left corner represents a map grid cell with sequence number 1 and coordinates (1,1), and the sequence number of the 2 nd row from bottom to top is J +1 and coordinates (2,1) represent a map grid cell of the 1 st column of the 2 nd row. In other embodiments of the present invention, the map grid cells may also be identified by using individual serial numbers or coordinates, which is not limited by the present invention.
102, determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; and the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit.
Specifically, the weight of the hazardous chemical substance can be determined according to the running track of the hazardous chemical substance transport vehicle, specifically, the map grid unit corresponding to the area where the hazardous chemical substance transport vehicle passes can be determined according to the running track, and the weight of the hazardous chemical substance of each map grid unit is further determined according to the map grid unit corresponding to the area where the hazardous chemical substance transport vehicles pass, wherein the more the hazardous chemical substance transport vehicles passing through the area corresponding to the map grid unit, the larger the weight of the hazardous chemical substance of the map grid unit is. For example, for a map grid unit, the number of dangerous chemical substance transport vehicles passing through the area corresponding to the map grid unit may be used as the dangerous chemical substance weight of the map grid unit.
The longitude and latitude coordinates of the dangerous chemical transport vehicle in the running track can be obtained according to the positioning data (such as GPS positioning data) of the dangerous chemical transport vehicle, and then the map grid unit corresponding to the area where the dangerous chemical transport vehicle passes is obtained.
And 103, determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified.
Specifically, the crowd weight may be determined by distribution data of the crowd in the area to be identified, and the distribution data may include, for example: and the thermal force value corresponding to the map grid unit and the timestamp corresponding to the thermal force value. Wherein the thermodynamic value represents how many people are in a certain area. The thermal value corresponding to the map grid unit is the thermal value of the area corresponding to the map grid unit, and the timestamp represents the time corresponding to the thermal value. That is, the crowd weight of each map grid cell is determined, and the heat value of the corresponding area of the map grid cell can be determined first.
For example, the average value of the thermal force values of the corresponding area of the map grid unit in a time period can be counted as the crowd weight of the map grid unit.
And step 104, determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit.
Specifically, whether an area is a dangerous area depends on whether a large number of people and too many dangerous chemicals are simultaneously contained in the area, that is, whether the area corresponding to the map grid unit is a dangerous area can be determined according to the weight of the dangerous chemicals and the weight of the people of the map grid unit, for example, the weight of the dangerous chemicals and the weight of the people of the map grid unit are both large.
The method comprises the steps of obtaining a plurality of map grid units of an area to be identified; determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit; determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified; according to the dangerous chemical weight and the crowd weight of each map grid unit, whether the area corresponding to each map grid unit is a dangerous area or not is determined, and according to the dangerous chemical weight and the crowd weight corresponding to a plurality of map grid units of the area to be identified, whether the area corresponding to each map grid unit is a dangerous area or not can be determined, so that data support can be provided for traffic safety supervision.
On the basis of the above embodiment, further, the following operations may be performed before step 102:
and determining the running track of the dangerous chemical substance transport vehicle in the area to be identified according to the positioning data of the dangerous chemical substance transport vehicle.
Specifically, for each dangerous chemical substance transport vehicle, for a preset time period, according to the GPS positioning data of the dangerous chemical substance transport vehicle, the longitude and latitude coordinates of the dangerous chemical substance transport vehicle are obtained, and the running track in the time period is determined according to the longitude and latitude coordinates.
Further, the crowd weight and the hazardous chemical weight of different map grid cells in the same time period may be different, and the crowd weight and the hazardous chemical weight of the same map grid cell in different time periods may also be different, for example, the crowd weight and the hazardous chemical weight of a certain map grid cell in different preset time periods, such as nine to ten am and nine to ten pm, may be different.
In the embodiment of the invention, the positioning data of the hazardous chemical substance transport vehicle and the distribution data of the crowd are divided according to time periods, for example, each day is divided according to time periods, and one time period represents a period of time, such as 1 hour or 30 minutes. Assuming that the data includes M days of data, each day is divided into N time periods. M and N are integers greater than 0.
For any preset time period, the preset time period is, for example, the nth preset time period (one hour or 30 minutes, etc.) of the mth day, where M is an integer greater than 0 and smaller than M, and N is an integer greater than 0 and smaller than N, and step 102 may be specifically implemented by:
determining a map grid unit corresponding to an area where the running track passes according to the running track of the hazardous chemical substance transport vehicle in the preset time period;
and determining the weight of hazardous chemicals of each map grid cell in the preset time period according to the map grid cell corresponding to the area where the running track passes.
Specifically, firstly, the map grid unit corresponding to the area where the running track passes through within a preset time period is determined, and then the weight of the hazardous chemical substance of each map grid unit within the preset time period is determined, for example, each time a hazardous chemical substance transport vehicle passes through one map grid unit, the weight of the hazardous chemical substance of the map grid unit is added with 1.
The method comprises the following steps of determining a map grid unit corresponding to an area where a running track passes according to the running track of the hazardous chemical substance transport vehicle in the preset time period, and specifically realizing the following steps:
and taking the map grid unit corresponding to the area on the shortest path in the running track of the hazardous chemical substance transport vehicle in the preset time period as the map grid unit corresponding to the area through which the running track passes.
Specifically, for each dangerous chemical substance transport vehicle, if the sequence number of the map grid unit corresponding to the area where the dangerous chemical substance transport vehicle is located is obtained according to the GPS positioning data at the moment t, the sequence number is ltAnd the sequence number of the map grid unit corresponding to the area where the dangerous chemical substance transport vehicle is located is l according to the GPS positioning data at the t +1 momentt+1. If l istAnd lt+1The map grid cells are adjacent in space or the same map grid cell, the map grid cell corresponding to the area passed by the dangerous chemical transport vehicle in the (t, t +1) time period is ltAnd lt+1(ii) a Otherwise, the map grid unit corresponding to the area passed by the dangerous chemical transport vehicle in the (t, t +1) preset time period is determined as followstTo lt+1The shortest path of (1) to the map grid cell.
On the basis of the foregoing embodiment, further, step 103 may specifically be implemented by:
determining the average value of the corresponding heat force values of each map grid unit in the preset time period according to the distribution data of the crowd; the distribution data comprises a heat value corresponding to each map grid unit and a timestamp corresponding to the heat value;
and taking the average value of the heat power values corresponding to the map grid units in the preset time period as the crowd weight of each map grid unit in the preset time period.
Specifically, the crowd weight may be determined by distribution data of the crowd in the area to be identified, and the distribution data may include, for example: and the thermal force value corresponding to each map grid unit and the timestamp corresponding to the thermal force value. Wherein the thermodynamic value represents how many people are in a certain area. The thermal value corresponding to the map grid cell represents the thermal value of the area corresponding to the map grid cell, and the timestamp represents the time corresponding to the calculation of the thermal value. That is, the crowd weight of each map grid cell is determined, and the thermal value of the area corresponding to the map grid cell can be determined first.
For example, the average value of the thermal values of the areas corresponding to the map grid cells in the preset time period may be counted as the crowd weight of the map grid cells in the preset time period.
In this embodiment, the map grid unit corresponding to the area through which the running track passes can be determined according to the running track of the hazardous chemical substance transport vehicle in the preset time period; determining the weight of hazardous chemical substances of each map grid unit in the preset time period according to the map grid unit corresponding to the area where the running track passes, determining the average value of the thermal values corresponding to each map grid unit in the preset time period according to the distribution data of the crowd, and taking the average value of the thermal values corresponding to each map grid unit in the preset time period as the weight of the crowd of each map grid unit in the preset time period; and further, according to the dangerous chemical weight and the crowd weight corresponding to the map grid units of the area to be identified, whether the area corresponding to each map grid unit is a dangerous area or not can be determined, and data support can be provided for traffic safety supervision.
On the basis of the above embodiment, further, the step 104 may specifically be implemented by the following several ways:
one implementation is as follows:
taking the product of the weight of the hazardous chemical substance of each map grid unit and the weight of the crowd in a preset time period as the risk score of each map grid unit in the preset time period;
and determining whether the area corresponding to each map grid unit in the preset time period is a dangerous area or not according to the danger score of each map grid unit in the preset time period and a preset threshold value.
Specifically, the risk score of the map grid unit in the preset time period is calculated according to the weight of the dangerous chemicals and the weight of the crowd in the map grid unit in the preset time period, for example, the product of the weight of the dangerous chemicals and the weight of the crowd is used as the risk score of the map grid unit. And if the risk score is larger than a preset threshold value, determining that the area corresponding to the map grid unit in the preset time period is a dangerous area. The preset threshold may be an empirical value, and is generally higher than the risk score of more than 90% of the map grid cells.
When calculating the risk score of the map grid unit, in order to overcome the influence that the weight of the hazardous chemical substance and the weight of the crowd are in different orders of magnitude, the embodiment of the present invention normalizes the weight of the hazardous chemical substance and the weight of the crowd, that is, the step "taking the product of the weight of the hazardous chemical substance and the weight of the crowd of each map grid unit in a preset time period as the risk score of each map grid unit in the preset time period" may be specifically implemented as follows:
respectively carrying out normalization processing on the weight of the hazardous chemical substance of each map grid unit and the weight of the crowd in a preset time period;
and taking the product of the weight of the dangerous chemicals after the normalization processing of each map grid unit in the preset time period and the weight of the crowd as the risk score of each map grid unit in the preset time period.
Specifically, the weights of dangerous chemicals and population are normalized to [0,1 ] by dispersion normalization]Interval, normalized risk
Figure BDA0002177043940000091
The score calculation formula is as follows:
Figure BDA0002177043940000092
wherein d isminRepresenting the minimum value of the weight of dangerous chemicals in each map grid cell, dmaxRepresenting the maximum value of the weight of the dangerous chemicals in each map grid unit; c. CminRepresenting the minimum value of the weight of the crowd in the grid cell of the respective map, cmaxRepresenting the maximum value of the crowd weight in each map grid cell.
Figure BDA0002177043940000093
To representThe risk score of the map grid unit on the ith row and the jth column in the nth preset time period on the mth day;
Figure BDA0002177043940000094
representing ith row and jth column of map grid cell z in nth preset time period on mth dayijThe weight of the hazardous chemical substance(s),
Figure BDA0002177043940000095
representing ith row and jth column of map grid cell z in nth preset time period on mth dayijWherein M is an integer greater than 0 and less than M, N is an integer greater than 0 and less than N, and M and N are integers greater than 0; the value range of I is 1 to I, the value range of J is 1 to J, and I and J are integers more than 0.
The other realization mode is as follows:
if the weight of the hazardous chemical substance of each map grid unit in a preset time period is greater than a first weight threshold value, and the weight of the crowd of each map grid unit in the preset time period is greater than a second weight threshold value, determining that the area corresponding to each map grid unit in the preset time period is a dangerous area.
Specifically, the dangerous chemical weight and the crowd weight of each map grid unit in a preset time period may be respectively compared with a preset threshold, and if the dangerous chemical weight of the map grid unit is greater than a first weight threshold and the crowd weight of the map grid unit is greater than a second weight threshold, the area corresponding to the map grid unit in the preset time period is determined to be a dangerous area.
On the basis of the foregoing embodiment, further, in order to improve accuracy of identifying a dangerous area and avoid misidentification of the dangerous area, the determining, in an embodiment of the present invention, that an area corresponding to a map grid cell is a dangerous area includes:
if the number of times of determining that the map grid unit is a dangerous area is larger than the preset number of times within a plurality of preset time periods within a preset time range, determining that the map grid unit is a dangerous area within the preset time period.
Specifically, by identifying the dangerous area, it can be known whether the area corresponding to the map grid cell in a certain preset time period is a dangerous area, that is, whether the area corresponding to the map grid cell is in a dangerous state in a certain preset time period, but there may be an accidental factor, that is, the area corresponding to the map grid cell in the other same preset time periods may not be a dangerous area. For example, if the area corresponding to the map grid unit is determined to be a dangerous area in nine to ten am on 15 th of month 2 in 2019, and if the area corresponding to the map grid unit is determined not to be a dangerous area in nine to ten am on 16 th-28 th of month 2 in 2019, it indicates that the area corresponding to the map grid unit is not a dangerous area in a period of nine to ten am. That is, whether the area corresponding to one map grid unit is a dangerous area or not should be frequent in time and cannot happen accidentally, that is, the number of times that the area corresponding to the map grid unit is determined as a dangerous area is large in a certain preset time period within a certain time length range (for example, a time period from nine am to ten am in a week). Assuming that data for M days is observed, a threshold value δ (i.e., a preset number of times) is set. For map grid cell zijIf the number of times exceeds δ in M days, and the area corresponding to the map grid cell is a dangerous area in the kth preset time period (for example, the duration of the preset time period is 1 hour, and one day is divided into 24 preset time periods), the map grid cell z is considered to be a dangerous areaijThe corresponding region is a dangerous region in the k-th preset time period.
In this embodiment, according to the weights of hazardous chemical substances and the weights of people corresponding to the map grid units of the area to be identified, whether the area corresponding to each map grid unit is a dangerous area or not can be determined, and when it is determined that the area corresponding to a certain map grid unit is a dangerous area, it is necessary to determine that the accuracy of identifying the dangerous area is high according to data in a plurality of preset time periods, so that data support can be provided for traffic safety supervision.
Fig. 3 is a schematic structural diagram of an embodiment of an identification apparatus for a dangerous chemical dangerous area provided in the present invention, and as shown in fig. 3, the identification apparatus for a dangerous chemical dangerous area of the present embodiment includes:
an obtaining module 301, configured to obtain a plurality of map grid cells of an area to be identified;
a first determining module 302, configured to determine, according to a running track of a hazardous chemical substance transportation vehicle in the area to be identified, a hazardous chemical substance weight of each map grid unit; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit;
a second determining module 303, configured to determine a crowd weight of each map grid unit according to distribution data of a crowd in the area to be identified;
and the processing module 304 is configured to determine whether the area corresponding to each map grid unit is a dangerous area according to the weight of the hazardous chemical substance and the weight of the crowd in each map grid unit.
As a possible implementation manner, the obtaining module 301 is specifically configured to:
determining the latitude and longitude range of the area to be identified;
and dividing the area to be identified into a plurality of sub-areas according to the longitude and latitude range of the area to be identified and preset longitude intervals and latitude intervals, wherein the sub-areas correspond to the map grid units one by one.
As a possible implementation manner, the first determining module 302 is specifically configured to:
determining a map grid unit corresponding to an area where the running track passes according to the running track of the hazardous chemical substance transport vehicle in the preset time period;
and determining the weight of hazardous chemicals of each map grid cell in the preset time period according to the map grid cell corresponding to the area where the running track passes.
As a possible implementation manner, the first determining module 302 is specifically configured to:
and taking the map grid unit corresponding to the area on the shortest path in the running track of the hazardous chemical substance transport vehicle in the preset time period as the map grid unit corresponding to the area through which the running track passes.
As a possible implementation manner, the first determining module 302 is further configured to:
and determining the running track of the dangerous chemical substance transport vehicle in the area to be identified according to the positioning data of the dangerous chemical substance transport vehicle.
As a possible implementation manner, the second determining module 303 is specifically configured to:
determining the average value of the corresponding heat force values of each map grid unit in the preset time period according to the distribution data of the crowd; the distribution data comprises a heat value corresponding to each map grid unit and a timestamp corresponding to the heat value;
and taking the average value of the heat power values corresponding to the map grid units in the preset time period as the crowd weight of each map grid unit in the preset time period.
As a possible implementation manner, the processing module 304 is specifically configured to:
taking the product of the weight of the hazardous chemical substance of each map grid unit in the preset time period and the weight of the crowd as the risk score of each map grid unit in the preset time period;
and determining whether the area corresponding to each map grid unit in the preset time period is a dangerous area or not according to the danger score of each map grid unit in the preset time period and a preset threshold value.
As a possible implementation manner, the processing module 304 is specifically configured to:
if the weight of the hazardous chemical substance of each map grid unit in the preset time period is greater than a first weight threshold value, and the weight of the crowd of each map grid unit in the preset time period is greater than a second weight threshold value, determining that the area corresponding to each map grid unit in the preset time period is a dangerous area.
As a possible implementation manner, the processing module 304 is specifically configured to:
if the number of times of determining that the map grid unit is a dangerous area is larger than the preset number of times within a plurality of preset time periods within a preset time range, determining that the map grid unit is a dangerous area within the preset time period.
As a possible implementation manner, the processing module 304 is specifically configured to:
respectively carrying out normalization processing on the dangerous chemical substance weight and the crowd weight of each map grid unit in the preset time period;
and taking the product of the weight of the dangerous chemicals after the normalization processing of each map grid unit in the preset time period and the weight of the crowd as the risk score of each map grid unit in the preset time period.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
Fig. 4 is a structural diagram of an embodiment of an electronic device provided in the present invention, and as shown in fig. 4, the electronic device includes:
a processor 401, and a memory 402 for storing executable instructions for the processor 401.
Optionally, the method may further include: a communication interface 403 for communicating with other devices.
The above components may communicate over one or more buses.
The processor 401 is configured to execute the corresponding method in any one of the foregoing method embodiments by executing the executable instruction, and the specific implementation process thereof may refer to the foregoing method embodiments, which is not described herein again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method in any of the foregoing method embodiments is implemented.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. A method for identifying a dangerous area of a hazardous chemical substance is characterized by comprising the following steps:
acquiring a plurality of map grid units of an area to be identified;
determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit;
determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified;
and determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit.
2. The method of claim 1, wherein obtaining a plurality of map grid cells for an area to be identified comprises:
determining the latitude and longitude range of the area to be identified;
and dividing the area to be identified into a plurality of sub-areas according to the longitude and latitude range of the area to be identified and preset longitude intervals and latitude intervals, wherein the sub-areas correspond to the map grid units one by one.
3. The method according to claim 1 or 2, wherein the determining the dangerous chemical weight of each map grid unit according to the running track of the dangerous chemical transport vehicle in the area to be identified comprises:
determining a map grid unit corresponding to an area where the running track passes according to the running track of the hazardous chemical substance transport vehicle in a preset time period;
and determining the weight of hazardous chemicals of each map grid cell in the preset time period according to the map grid cell corresponding to the area where the running track passes.
4. The method according to claim 3, wherein the determining, according to the running track of the hazardous chemical substance transport vehicle within the preset time period, the map grid unit corresponding to the area through which the running track passes includes:
and taking the map grid unit corresponding to the area on the shortest path in the running track of the hazardous chemical substance transport vehicle in the preset time period as the map grid unit corresponding to the area through which the running track passes.
5. The method according to claim 1 or 2, wherein the determining the crowd weight of each map grid cell according to the distribution data of the crowd in the area to be identified comprises:
determining the average value of the corresponding heat force values of each map grid unit in a preset time period according to the distribution data of the crowd; the distribution data comprises a heat value corresponding to each map grid unit and a timestamp corresponding to the heat value;
and taking the average value of the heat power values corresponding to the map grid units in the preset time period as the crowd weight of each map grid unit in the preset time period.
6. The method according to claim 1 or 2, wherein the determining whether the area corresponding to each map grid cell is a dangerous area according to the weight of the hazardous chemical substance and the weight of the crowd of each map grid cell comprises:
taking the product of the weight of the hazardous chemical substance of each map grid unit in a preset time period and the weight of the crowd as the risk score of each map grid unit in the preset time period;
and determining whether the area corresponding to each map grid unit in the preset time period is a dangerous area or not according to the danger score of each map grid unit in the preset time period and a preset threshold value.
7. The method according to claim 1 or 2, wherein the determining whether the area corresponding to each map grid cell is a dangerous area according to the weight of the hazardous chemical substance and the weight of the crowd of each map grid cell comprises:
if the weight of the hazardous chemical substance of each map grid unit in a preset time period is greater than a first weight threshold value, and the weight of the crowd of each map grid unit in the preset time period is greater than a second weight threshold value, determining that the area corresponding to each map grid unit in the preset time period is a dangerous area.
8. The method of claim 1 or 2, wherein determining whether the area corresponding to each map grid cell is a dangerous area comprises:
if the number of times of determining that the map grid unit is a dangerous area is larger than the preset number of times within a plurality of preset time periods within a preset time range, determining that the map grid unit is a dangerous area within the preset time period.
9. An identification device for hazardous chemical hazardous area, comprising:
the system comprises an acquisition module, a recognition module and a recognition module, wherein the acquisition module is used for acquiring a plurality of map grid units of an area to be recognized;
the first determining module is used for determining the weight of the hazardous chemical substances of each map grid unit according to the running track of the hazardous chemical substance transport vehicle in the area to be identified; the dangerous chemical substance weight is used for representing the number of dangerous chemical substance transport vehicles corresponding to each map grid unit;
the second determining module is used for determining the crowd weight of each map grid unit according to the distribution data of the crowd in the area to be identified;
and the processing module is used for determining whether the area corresponding to each map grid unit is a dangerous area or not according to the dangerous chemical weight and the crowd weight of each map grid unit.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1 to 8.
11. An electronic device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of claims 1-8 via execution of the executable instructions.
CN201910782572.2A 2019-08-23 2019-08-23 Dangerous chemical dangerous area identification method, device, equipment and storage medium Active CN112418211B (en)

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