KR20210100522A - Method and system for generating optimal police line when chemical terrorism occurs based on gis - Google Patents

Abstract

According to one aspect of the present invention, a system for generating a GIS-based optimal police line in case of a chemical terror includes: a memory storing a program for generating a GIS-based optimal police line in case of a chemical terror; and a processor executing the program stored in the memory. The program generates a concentration distribution area modeling a dispersion state of leaked chemical substances through a chemical substance dispersion model based on a leakage spot inputted by a user and GIS information including road and building information collected through a network; generates a dispersion distribution center line traversing a center part of the concentration distribution area in accordance with a dispersion direction of the leaked chemical substances from the leakage spot; selects crossing points, which are most adjacent to two of a plurality of linear roads crossing with straight lines extended from two points of the dispersion distribution center line respectively, as a start point and an end point; and searches for a primary shortest distance connecting the start point with the end point on a map to provide the same as a police line.

Description

Method and system for generating GIS-based optimal police line in case of chemical terrorism

The present invention relates to a method and system for generating an optimal GIS-based police line in the event of a chemical terrorism.

Globally, after the 911 terrorist attacks in the United States, terrorism targeting an unspecified majority in England and Spain occurred in 2016 and 17 years, and the occurrence of terrorism due to international religious, ethnic, and territorial conflicts is increasing.

In Korea, there is a possibility of constant war and terrorism by North Korea, and the possibility of domestic terrorism by IS emerged in 2016. In addition, hydrofluoric acid leak accidents occurred in Gumi, Ulsan and Suwon, and large explosions and fires caused by oil leaks occurred in Ulsan.

In this regard, by driving the weather diagnosis model to diagnose the wind direction and wind speed in the area where the hazardous chemical leakage accident occurred, and then by driving the atmospheric diffusion model, the diagnosed wind direction and wind speed and harmful chemical information are applied to the driven atmospheric diffusion module. A method for predicting the spread of hazardous chemicals has been proposed. However, since it takes a considerable amount of time from the driving of the weather diagnosis model to the driving of the atmospheric diffusion model, there is a problem in that it is not possible to immediately respond to an actual hazardous chemical leakage accident.

In addition, when a chemical terrorism occurs, a control line is installed to control nearby residents, and the control line should be determined based on the range of influence of the spread of chemical terrorism substances. However, in the case of the prior art, there is a problem that the control line determined by the concentration cannot be a control line considering the road or buildings, since the range of influence on the diffusion of hazardous chemicals is determined by the concentration distribution in the atmosphere.

Therefore, it is required to develop on-site response/support tools that can respond to large-scale disaster situations such as local terrorism or hazardous chemical leaks, and predictive tools that can more actively respond to terrorist or disaster situations caused by hazardous substances are required.

The present invention is to solve the problems of the prior art described above, and provides a realistically installable police line (control line) generated based on information on the leak location of hazardous chemicals and GIS information and weather observation information obtained through the network Its purpose is to do

However, the technical task to be achieved by the present embodiment is not limited to the technical task as described above, and other technical tasks may exist.

As a technical means for achieving the above-described technical problem, a system for generating a GIS-based optimal police line in the event of a chemical terrorism according to an aspect of the present invention includes: a memory for storing a program for generating a GIS-based optimal police line in the event of a chemical terrorism; and a processor executing a program stored in the memory, the program configured to: leak chemical through a chemical diffusion model based on GIS information including road and building information collected over the network and a leak point input by a user Create a concentration distribution region modeling the diffusion state of Among a plurality of straight roads intersecting an extended straight line, the intersection point closest to two points is selected as the starting point and the ending point, and the first shortest distance connecting the starting point and the ending point is searched on the map and provided as a police line.

The program provides a user interface for adding a virtual barrier on the map on which the police line is displayed, but the program provides a second shortest distance that bypasses the barrier when the barrier is added on the first shortest distance. Search on the map and provide updated police lines.

The program generates an optimal policeline enclosing the concentration distribution region based on the first and second shortest distances.

The blocking wall is located in one of the first and second areas divided based on a straight line connecting the start point and the end point.

According to another aspect of the present invention, the optimal police line generation method performed by the GIS-based optimal police line generation system in the event of a chemical terrorism according to another aspect of the present invention includes (a) GIS information including road and building information collected through a network and inputted by a user. generating a concentration distribution region in which a diffusion state of a leaking chemical is modeled through a chemical diffusion model based on the leak point; (b) generating a diffusion distribution centerline that crosses the middle portion of the concentration distribution region according to the diffusion direction of the leaking chemical at the leak point; (c) selecting an intersection point closest to two points among a plurality of straight roads intersecting a straight line extending from two points of the center line of the diffusion distribution as a starting point and an ending point; and (d) searching for the first shortest distance connecting the starting point and the ending point on the map and providing it as a police line.

Step (d) includes providing a user interface for adding a virtual barrier on the map on which the police line is displayed, and when the barrier is added on the first shortest distance, bypassing the barrier Search for the second shortest distance on the map and update it as a police line and provide it.

Step (d) generates an optimal policeline surrounding the concentration distribution region based on the first and second shortest distances.

The blocking wall is located in one of the first and second areas divided based on a straight line connecting the start point and the end point.

According to the above-described problem solving means of the present invention, the GIS-based optimal police line generation system in the event of a chemical terrorism according to an embodiment of the present invention obtains road and building information through the network as information on the location of leakage of hazardous substances is input. By providing a police line generated based on GIS information and weather observation information including

1 is a block diagram illustrating the configuration of a GIS-based optimal police line generation system in case of chemical terrorism according to an embodiment of the present invention.
2 is an example illustrating a user interface output from a display unit as a GIS-based optimal policeline generation process is performed according to an embodiment of the present invention.
3A and 3B are diagrams for explaining a method of calculating a starting point and an ending point of a police line according to an embodiment of the present invention.
4A and 4B are an example of a user interface that provides a first optimal distance and a second optimal distance according to the addition of a blocking wall according to an embodiment of the present invention.
5 is a flowchart illustrating a method for generating a GIS-based optimal police line in the event of a chemical terrorism according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element interposed therebetween. . Also, when a part "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated, and one or more other features However, it is to be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware. Meanwhile, '~ unit' is not limited to software or hardware, and '~ unit' may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors. Thus, as an example, '~' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating the configuration of a GIS-based optimal police line generation system in case of chemical terrorism according to an embodiment of the present invention.

Referring to FIG. 1 , the optimal police line generation system 100 of the present invention includes a memory 110 storing a GIS-based optimal police line generation program and a processor 130 executing the program stored in the memory 110 when a chemical terrorism occurs. includes

The program generates a concentration distribution region that models the diffusion state of the leaking chemical through the chemical diffusion model based on the GIS information including road and building information collected through the network and the leak point input by the user, Two points of a plurality of straight roads intersecting a straight line respectively extending from the two points of the diffusion distribution center line to generate a diffusion distribution center line crossing the middle part of the concentration distribution area according to the diffusion direction of the leaking chemical at the leakage point. and the closest intersection point is selected as the starting point and the ending point, and the first shortest distance connecting the starting point and the ending point is searched on the map and provided as a police line. A detailed process for selecting a starting point and an end point will be described later with reference to FIGS. 3A and 3B .

Here, the map information on the leak point (location information) of the hazardous chemical may be obtained from the external server 10 that provides geographic information as GIS (Geographic Information System) information. In addition, information on roads and buildings and weather observation information may also be obtained from an external server 10 such as a geographic information providing server and a weather observation server, respectively, and the topographical information includes land use topology including land use and altitude. may contain information.

Specifically, the optimal police line generation system 100 includes a memory 110 , a communication unit 120 , and a processor 130 , and has a communication function such as a desktop computer, a laptop computer, a server, a portable terminal, and the like. It may be driven in an electronic device.

The memory 110 stores a GIS-based optimal police line generation program (or at least one instruction). In this case, the memory 110 collectively refers to a non-volatile storage device that continuously maintains stored information even when power is not supplied, and a volatile storage device that requires power to maintain the stored information.

The communication unit 120 may include one or more components that allow communication with the outside, such as the server 10 that provides geographic information, terrain information, and weather observation information. Alternatively, the communication unit 120 may be a device including hardware and software necessary for transmitting and receiving signals such as control signals or data signals through wired/wireless connection with other network devices. For example, the communication unit 120 is a LAN (Local Area Network) or Bluetooth (Bluetooth), BLE (Bluetooth Low Energy), infrared (IrDA, infrared Data Association), Zigbee (Zigbee) communication for performing wired or wireless data communication. It may include a component capable of performing at least one of.

The processor 130 controls the overall operation of the optimal policeline generation system 100 . To this end, the processor 130 may include at least one of a random access memory (RAM), a read-only memory (ROM), a CPU, a graphic processing unit (GPU), and a bus.

In addition, the processor 130 executes a program stored in the memory 110 to perform a GIS-based optimal police line generation process.

Meanwhile, the optimal policeline generating system 100 may optionally include the display unit 140 . The display unit 140 receives the image signal processed by the processor 130 and outputs it to the display area, and may be implemented as a PDP, LCD, OLED, flexible display, or 3D display.

When the optimal police line generating system 100 does not include the display unit 140 , the image signal processed by the processor 130 is provided to an external display device through the communication unit 120 and is output through the external display device. may be

2 is an example illustrating a user interface output from a display unit as a GIS-based optimal policeline generation process is performed according to an embodiment of the present invention.

As shown, the program models the diffusion state of the leaking chemical through the chemical diffusion model based on the GIS information including road and building information collected through the network and the leak point (P1) input by the user. A concentration distribution region can be created.

At this time, the chemical diffusion model acquires the leak information about the leak point, the leaked chemical and the leak point, and the container information about the size of the container in which the leaked chemical is stored, the container pressure and the leak height of the container, and through the leak information and the network Generate a wind field for the area around the leak location based on the acquired topographic information and weather observation information, calculate the leak rate of the leaking chemical based on the container information, and leak based on the wind field and the calculated leak rate A conventionally known technique for modeling the diffusion state of a chemical is used, and a detailed description thereof will be omitted. For reference, reference will be made to the content of the chemical substance behavior analysis method disclosed in Korean Patent Registration No. 2018281 (Title of the Invention: Hazardous Chemical Behavior Analysis Method and System) applied by the present applicant.

Illustratively, as shown in Fig. 2, the program generates a diffusion distribution center line that crosses the middle part of the concentration distribution area according to the diffusion direction of the leaking chemical at the leakage point P1, and Among a plurality of straight roads intersecting a straight line extending from the two points (P1, P1'), the intersection point closest to the two points (P1, P1') is selected as the starting point (P2) and the ending point (P2'), and the starting point ( The first shortest distance connecting P2) and the end point P2' may be searched on the map and provided as a police line 210 through the user interface 200 .

3A and 3B are diagrams for explaining a method of calculating a starting point and an ending point of a police line according to an embodiment of the present invention.

Specifically, as shown in FIGS. 2 and 3A, the program calculates the starting point P2 of the police line, the diffusion distribution center line (first straight line, P1-P1') and the leakage point P1 of the center line. ) and the nearest straight road (second straight line) are defined as two straight lines, and are expressed as in Equation 1 below.

<Formula 1>

At this time, it is assumed that t1 and t2 have a value between 0 and 1 and move on a straight line.

Next, the simultaneous equations of X1(t)=X2(t) and Y1(t)=Y2(t) for finding the intersection (ie, starting point) of two straight lines are expressed as Equation 2 below.

<Formula 2>

In Equation 2 above, t2 is erased and converted into the equation of t1, as shown in Equation 3 below.

<Formula 3>

In this case, if the denominator is 0, the two straight lines are parallel and never meet.

Next, in the same manner, t1 is erased from Equation 2 and converted into the equation of t2, as shown in Equation 4 below.

<Formula 4>

That is, when t1 and t2 calculated from Equations 3 and 4 have a value of 0 to 1, it means that the two straight lines already intersect.

In addition, as shown in Fig. 3b, when two straight lines do not intersect (when t1 and t2 are out of the range of 0 to 1), the leakage point P1 of the diffusion distribution center line (the first straight line) and The nearest intersection point P2 is detected. Here, the intersection P2 intersects a straight line extending from the leak point P1 and is located on the straight road (second straight line) closest to the leak point P1, and the road for the police line (second straight line) is The leak point (P1) cannot be passed.

Exemplarily, t1 and t2 calculated from Equations 3 and 4 are t1 = 0 if t1 < 0, t1 = 1 if t1 > 1, t2 = 0 if t2 < 0, and t2 = 1 if t2 > 1 am.

That is, the program is located on a straight road (second straight line) closest to the leak point P1 among straight roads close to the leak point P1, and intersects the straight line extending from the leak point P1 ( P2) can be calculated as the starting point (P2) of the police line.

On the other hand, referring again to FIG. 2, the program calculates the end point P2' of the police line, similarly to the method of calculating the start point P2, the center line of the diffusion distribution (P1-P1') and the end point of the center line ( P1') and the nearest straight road may be defined as two straight lines, and values t1 and t2 may be calculated from Equations 1 to 4 above. Also, among straight roads close to the end point P1' of the center line, it is located on a straight road closest to the end point P1' of the center line and intersects with a straight line extending from the end point P1' of the center line. (P2') can be calculated as the end point (P2') of the police line.

Accordingly, the program may provide the police line 210 through a route search for the starting point P2 and the ending point P2' on the map of the user interface 200 .

4A and 4B are an example of a user interface providing a first optimal distance and a second optimal distance according to the addition of a blocking wall according to an embodiment of the present invention.

For example, as illustrated in FIGS. 4A and 4B , the program may provide a user interface 200 for adding a blocking wall 220 on a map on which a police line 210 is displayed.

In this case, the blocking wall 220 may be located in one of the first and second regions divided based on a straight line connecting the start point P2 and the end point P2 ′.

For example, as shown in FIG. 4A, the upper side is divided into a first area and the lower side is a second area based on an imaginary straight line connecting the start point P2 and the end point P2', and the first area is 1 When the shortest blocking distance 211 is generated, the blocking wall 220 may be disposed on the first region.

In addition, as shown in FIG. 4B , when the blocking wall 220 is added to the first shortest distance 211 on the first area by the user, the program updates the police line 210, but the blocking wall ( 220), the second shortest distance 212 may be searched on the map.

That is, as shown in FIG. 2 , the program may generate the optimal policeline 210 surrounding the concentration distribution area based on the first and second shortest distances 211 and 212 .

Therefore, the present invention provides a range of influence of hazardous chemicals predicted based on weather observation information and information on roads and buildings based on GIS through the user interface 200, and is generated based on the range of influence of hazardous chemicals A police line (control line) can be provided.

In the event of a chemical terrorism, a control line should be installed to control nearby residents, and the control line should be determined based on the range of influence of the spread of chemical terrorism substances.

On the other hand, in the conventional case, since the diffusion effect range is determined by the concentration distribution in the atmosphere, there is a problem that the control line determined by the concentration cannot be a control line considering the road or the building.

However, the user interface 200 according to an embodiment of the present invention may provide a diffusion range area (concentration distribution area) of a hazardous chemical and a police line on the map. In this case, the police line may be generated based on a path on the map where people can actually move. That is, when a building or a topographical feature is located, a police line cannot be installed on the roof of the building, so a police line can be generated and provided in consideration of these factors. Also, for example, a plurality of control lines divided into stages according to the level of risk of hazardous chemicals may be provided so as to be identifiable.

Therefore, the present invention can automatically generate a police line that can be installed on a road by combining the range of influence of the chemical terrorism (harmful chemical) spread and GIS information such as roads and buildings.

Hereinafter, descriptions of the same components among the components shown in FIGS. 1 to 4B will be omitted.

5 is a flowchart illustrating a method for generating a GIS-based optimal police line in the event of a chemical terrorism according to an embodiment of the present invention.

As shown, in the case of chemical terrorism according to another aspect of the present invention, the optimal police line generation method performed by the GIS-based optimal police line generation system is based on GIS information including road and building information collected through the network and by the user. Generating a concentration distribution region modeling the diffusion state of the leaking chemical through the chemical diffusion model based on the input leak point (S310), the middle part of the concentration distribution region according to the diffusion direction of the leaking chemical at the leak point Creating a diffusion distribution center line that crosses (S320), selecting the intersection point closest to two points among a plurality of straight roads intersecting a straight line extending from two points of the diffusion distribution center line as a starting point and an end point ( S330), and a first shortest distance connecting the starting point and the ending point is searched on the map and provided as a police line (S340).

Step S340 includes providing a user interface for adding a virtual barrier on the map on which the police line is displayed, and when the barrier is added on the first shortest distance, 2 Search for the shortest distance on the map and update it as a police line and provide it.

In step S340, an optimal police line surrounding the concentration distribution region is generated based on the first shortest distance and the second shortest distance.

The blocking wall is located in one of the first and second areas divided based on a straight line connecting the start point and the end point.

An embodiment of the present invention may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer-readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. Also, computer-readable media may include computer storage media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

Although the methods and systems of the present invention have been described with reference to specific embodiments, some or all of their components or operations may be implemented using a computer system having a general purpose hardware architecture.

The above description of the present application is for illustration, and those of ordinary skill in the art to which the present application pertains will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present application is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present application.

100: Optimal police line generation system
110: memory
120: communication department
130: processor
140: display unit

Claims (8)

In a GIS-based optimal police line generation system in case of chemical terrorism,
a memory for storing the GIS-based optimal police line creation program in case of chemical terrorism; and
A processor for executing the program stored in the memory;
The program generates a concentration distribution area that models the diffusion state of a leaking chemical through a chemical diffusion model based on the leak point input by the user and GIS information including road and building information collected through the network, and ,
generating a diffusion distribution center line crossing the middle portion of the concentration distribution region according to the diffusion direction of the leaking chemical at the leak point;
Among a plurality of straight roads intersecting a straight line extending from two points of the center line of the diffusion distribution, the intersection point closest to the two points is selected as the starting point and the ending point,
An optimal police line generating system that searches for the first shortest distance connecting the start point and the end point on a map and provides it as a police line.
According to claim 1,
The program provides a user interface for adding a virtual barrier on the map on which the police line is displayed,
When the blocking wall is added on the first shortest distance, the program searches for a second shortest distance bypassing the blocking wall on a map and updates it as the police line to be provided. .
3. The method of claim 2,
and the program generates an optimal policeline surrounding the concentration distribution region based on the first shortest distance and the second shortest distance.
3. The method of claim 2,
Wherein the blocking wall is located in one of the first and second areas divided on the basis of a straight line connecting the start point and the end point.
In the method of generating an optimal police line performed by a GIS-based optimal police line generation system in the event of a chemical terrorism,
(a) generating a concentration distribution region modeling the diffusion state of the leaking chemical through the chemical diffusion model based on the leak point input by the user and the GIS information including road and building information collected through the network; ;
(b) generating a diffusion distribution centerline traversing a central portion of the concentration distribution region according to a diffusion direction of the leaking chemical at the leak point;
(c) selecting, as a starting point and an end point, an intersection point closest to the two points from among a plurality of straight roads intersecting a straight line extending from two points of the center line of the diffusion distribution; and
(d) searching for a first shortest distance connecting the start point and the end point on a map and providing it as a police line.
6. The method of claim 5,
Step (d) is
providing a user interface for adding a virtual barrier on a map on which the police line is displayed;
When the blocking wall is added to the first shortest distance, the second shortest distance bypassing the blocking wall is searched on a map, and the police line is updated and provided.
7. The method of claim 6,
Step (d) is
The method of generating an optimal police line surrounding the concentration distribution region based on the first shortest distance and the second shortest distance.
7. The method of claim 6,
The method for generating an optimal police line, wherein the blocking wall is located in one of a first area and a second area divided based on a straight line connecting the start point and the end point.

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