CN115824241A - Route planning method based on geographic information system and related device - Google Patents

Abstract

The application discloses a path planning method and a related device based on a geographic information system, which comprises the following steps: acquiring disaster information in a geographic information system when a preset signal is detected; determining a disaster affected area according to the disaster grade and the disaster range in the disaster information; determining a first feasible channel and a second feasible channel by combining the current road condition information of the disaster affected area; acquiring a historical disaster-affected record in a geographic information system to determine a target safety area; acquiring the position information of a current target terminal and determining a transfer type; determining a refuge path of a target terminal according to the transfer type of the target terminal in combination with the position information, the corresponding feasible channel and the target safety zone, and sending the refuge path to the target terminal; the refuge path is generated by combining the geographic information system with the actual road condition at the first time of disaster occurrence, and the loss of people caused by the disaster is further reduced.

Description

Path planning method and related device based on geographic information system

technical field

The present application relates to the field of route planning, in particular to a route planning method and related devices based on geographic information systems.

Background technique

For the masses of people in a special geographical location, the property and lives of the people have suffered a lot of damage due to frequent natural disasters over the years.

In the existing situation, when a natural disaster strikes, what can often be achieved is to send disaster reminders to all communication tools in the area. However, when major natural disasters require local people to transfer spontaneously, there is often no effective guidance. In the face of natural disasters, every minute of action is more likely to save people's lives and property.

Therefore, how to generate evacuation paths in time to reduce people's losses when natural disasters strike has become an urgent technical problem to be solved.

Contents of the invention

In order to generate an evacuation route in time when a natural disaster strikes, the present application provides a route planning method and a related device based on a geographic information system.

In the first aspect, a route planning method based on a geographical information system provided by the application adopts the following technical solution:

A route planning method based on geographic information system, comprising:

Obtain disaster information in GIS when predetermined signals are detected;

Determine the disaster-affected area according to the disaster level and disaster scope in the disaster information;

Obtaining current road condition information in the disaster-affected area in the geographic information system;

determining a first type of feasible passage and a second type of feasible passage according to the current road condition information;

Obtain the historical disaster log of the area to which the disaster-affected area belongs in the geographic information system, and determine the target safety area in combination with the disaster-affected area;

Obtaining the location information of the current target terminal and judging the transfer type to which the target terminal belongs;

When the target terminal belongs to the first type of transfer type, determine the first type of evacuation route according to the location information, the first type of feasible passage, and the target safety area and send it to the target terminal;

When the target terminal belongs to the second type of transfer type, the second type of evacuation route is determined according to the location information, the second type of feasible passage, and the target safety area and sent to the target terminal.

Optionally, the step of determining the disaster-affected area according to the disaster level and disaster scope in the disaster information includes:

matching the corresponding scope of influence in the geographic information system according to the disaster level in the disaster information;

Determine the actual disaster area according to the disaster range in the disaster information;

A disaster-affected area is determined according to the affected area and the actual disaster-affected area.

Optionally, the step of determining the first type of feasible passage and the second type of feasible passage according to the current road condition information includes:

Obtain current passable road information from the current road condition information;

judging whether the passable road information satisfies the filtering condition;

If so, obtain a first preset condition to filter out a first type of passable passage from the passable road information, and obtain a second preset condition to select a second type of passable passage from the passable road information .

Optionally, the step of obtaining the historical disaster log of the area to which the disaster-affected area belongs in the geographic information system, and determining the target safe area in combination with the disaster-affected area includes:

determining the area corresponding to the disaster-affected area in the geographic information system;

Obtain the historical disaster log corresponding to the area;

judging whether to expand the disaster-affected area according to the historical disaster log;

If not, obtain the default safety distance and determine the target safety area in combination with the disaster-affected area.

Optionally, after the step of judging whether it is necessary to expand the disaster-affected area according to the historical disaster log, the method further includes:

If it is determined according to the historical disaster log that the disaster-affected area needs to be expanded, specific disaster data is obtained from the historical disaster log;

Obtaining the impact weight of the specific disaster data;

performing matching in a preset strategy set according to the influence weight to obtain a corresponding expansion strategy;

A target safety area is determined according to the expansion strategy and the disaster-affected area.

Optionally, the step of acquiring the location information of the current target terminal and judging the transfer type of the target terminal includes:

Acquire the location information of the current target terminal, and determine the current location block of the target terminal according to the location information of the target terminal;

determining a transfer direction corresponding to the target terminal according to the current location block;

In the geographical information system, the transfer type corresponding to the target terminal is judged according to the identification code corresponding to the target terminal.

Optionally, when the target terminal belongs to the first type of transfer type, the first type of evacuation route is determined according to the location information, the first type of feasible passage, and the target safety area and sent to the target terminal steps, including:

If the target terminal belongs to the first transfer type, matching the first type of feasible channel according to the location information of the target terminal, the transfer direction and the target security area;

Generate the first type of refuge route according to the matching result;

determining the route receiving terminal according to the identification code corresponding to the target terminal;

Sending the first type of evacuation route to the route receiving terminal.

In a second aspect, the present application provides a geographic information system-based route planning device, the geographic information system-based route planning device comprising:

The information acquisition module is used to acquire disaster information in the geographic information system when a preset signal is detected;

An area determination module, configured to determine the area affected by the disaster according to the disaster level and the disaster range in the disaster information;

A road condition acquisition module, configured to acquire current road condition information in the disaster-affected area in the geographic information system;

a channel determination module, configured to determine a first type of feasible channel and a second type of feasible channel according to the current road condition information;

A safe area determination module, configured to obtain the historical disaster log of the area to which the disaster-affected area belongs in the geographic information system, and determine the target safe area in combination with the disaster-affected area;

A transfer type determination module, configured to acquire the location information of the current target terminal and determine the transfer type to which the target terminal belongs;

A first-type diversion module, configured to determine a first-type evacuation route according to the location information, the first-type feasible passage, and the target safety area when the target terminal belongs to the first-type diversion type, and send it to the target terminal;

The second-type transfer module is configured to determine a second-type evacuation route according to the location information, the second-type feasible passage, and the target safety area when the target terminal belongs to the second-type transfer type and send it to the target terminal.

In a third aspect, the present application provides a computer device, the device comprising: a memory and a processor, and the processor executes the method described in any one of the above when executing the computer instructions stored in the memory.

In a fourth aspect, the present application provides a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the method as described above.

In summary, the application includes the following beneficial technical effects:

This application obtains disaster information in the geographic information system when a preset signal is detected; determines the disaster-affected area according to the disaster level and disaster range in the disaster information; combines the current road condition information of the disaster-affected area to determine the first type of feasible channel and The second type of feasible channel; obtain the historical disaster records in the geographic information system to determine the target safety area; obtain the current target terminal location information and determine the transfer type; combine the location information, corresponding feasible channels and target safety according to the transfer type of the target terminal The district determines the evacuation route of the target terminal and sends it to the target terminal; it realizes the generation of evacuation routes through the geographic information system combined with the actual road conditions at the first time of the disaster, and further reduces the losses of people caused by disasters.

Description of drawings

Fig. 1 is a schematic diagram of the computer equipment structure of the hardware operating environment involved in the solution of the embodiment of the present invention;

Fig. 2 is a schematic flow chart of the first embodiment of the route planning method based on the geographic information system of the present invention;

Fig. 3 is a schematic flow chart of the second embodiment of the route planning method based on the geographical information system of the present invention;

Fig. 4 is a structural block diagram of the first embodiment of the route planning device based on the geographic information system of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of a computer device in a hardware operating environment involved in an embodiment of the present invention.

As shown in FIG. 1 , the computer device may include: a processor 1001 , such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002 , a user interface 1003 , a network interface 1004 , and a memory 1005 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001 .

Those skilled in the art can understand that the structure shown in FIG. 1 does not constitute a limitation on the computer equipment, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

As shown in FIG. 1 , the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a route planning program based on a geographic information system.

In the computer equipment shown in Figure 1, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; In the device, the computer device calls the route planning program based on the geographical information system stored in the memory 1005 through the processor 1001, and executes the route planning method based on the geographical information system provided by the embodiment of the present invention.

An embodiment of the present invention provides a route planning method based on a geographic information system. Referring to FIG. 2 , FIG. 2 is a schematic flowchart of a first embodiment of a route planning method based on a geographic information system according to the present invention.

In this embodiment, the route planning method based on geographic information system includes the following steps:

Step S10: Obtain disaster information in the geographic information system when the preset signal is detected.

It should be noted that the preset signal corresponds to a notification signal generated when a disaster occurs. According to actual usage needs, it is set to send a preset signal when a disaster is detected. For example: according to actual needs, set the disaster type as flash flood, earthquake, and send preset signals when floods come.

It should be noted that Geographic Information System (Geographic Information System or Geo-Information system, GIS) is sometimes called "geographic information system". It is a specific and very important spatial information system. It is a technical system that collects, stores, manages, calculates, analyzes, displays and describes the relevant geographical distribution data in the space of the entire or part of the earth's surface (including the atmosphere) with the support of computer hardware and software systems. Location and geographic information are both the core and the foundation of LBS. A simple latitude and longitude coordinate will be recognized and understood by users only after it is placed in specific geographic information and represented as a certain location, sign, or orientation. After users obtain location information through related technologies, they also need to understand their geographical environment, query and analyze environmental information, so as to provide information support and services for user activities. Geographic Information System (GIS, Geographic Information System) is a comprehensive subject that combines geography and cartography, remote sensing and computer science. It has been widely used in different fields and is used for input, storage, query, analysis and display. The computer system of geographic data, with the development of GIS, is also called "Geographic Information Science" (Geographic Information Science). In recent years, GIS is also called "Geographic Information Service". GIS is a computer-based tool for the analysis and processing of spatial information (in short, the mapping and analysis of phenomena and events that exist on Earth). GIS technology integrates the unique visualization and geographic analysis functions of maps with common database operations such as query and statistical analysis.

Step S20: Determine the area affected by the disaster according to the disaster level and the disaster range in the disaster information.

It should be noted that the disaster level is a level predetermined according to actual use requirements, and may also be a disaster level according to international or national disaster standards, which is not limited in this embodiment.

It can be understood that the disaster range refers to the range of the disaster-affected area detected by the sensing device.

Further, in order to accurately determine the disaster-affected area, the step of determining the disaster-affected area according to the disaster level and disaster range in the disaster information includes: matching in the geographic information system according to the disaster level in the disaster information Corresponding influence range: determine the actual disaster-affected area according to the disaster range in the disaster information; determine the disaster-affected area according to the influence range and the actual disaster-affected area.

In specific implementation, the disaster-affected area can only determine a part of the area through sensor monitoring. In order to accurately determine the disaster-affected area, the disaster-affected area is expanded through the determination of the disaster level to determine the actual disaster-affected area.

Step S30: Obtain current road condition information in the disaster-affected area in the geographic information system.

It should be noted that the way of obtaining the current road condition information refers to obtaining the current road condition information by using sensors or satellite monitoring equipment through image recognition or other detection methods.

In a specific implementation, the conclusion obtained by obtaining the current road condition information in the disaster-affected area refers to whether the current road condition can be passed normally.

Step S40: Determine the first type of feasible passage and the second type of feasible passage according to the current road condition information.

Further, in order to provide citizens with refuge routes of different modes of transportation, the step of determining the first type of feasible passage and the second type of feasible passage according to the current road condition information includes: obtaining the current passable passage from the current road condition information Road information; determine whether the passable road information satisfies the filtering condition; if so, obtain the first preset condition to filter out the first type of passable passage from the passable road information, and obtain the second preset condition to The second type of feasible passage is selected from the passable road information.

It should be noted that, in this embodiment, the first type of feasible passage refers to the passage that can be passed by walking or bicycles, and the second feasible passage refers to the escape passage that allows motor vehicles to pass normally. The definition of the second channel can be consistent with the national highway driving standards. Therefore, because the people affected by the disaster may have different ways of passing, the first type of feasible passage is slow, but there are many optional routes, and the second type of feasible passage has a large throughput and fast passage speed, but it will often destroy a large number of Roads belonging to the second category of feasible passages. Therefore, the number of feasible channels of the second type is often far less than the number of feasible channels of the first type.

Step S50: Obtain the historical disaster log of the area to which the disaster-affected area belongs in the geographic information system, and determine the target safe area in combination with the disaster-affected area.

It should be noted that the historical disaster log is the disaster record of the target area recorded through official data or other channels. In this embodiment, the natural disasters suffered by the target area are also recorded in the disaster record.

Further, in order to reasonably generate the scope of the safe area and reduce the secondary damage caused by the disaster, the historical disaster log of the area to which the disaster-affected area belongs is obtained in the geographic information system, and the target is determined in combination with the disaster-affected area The step of safe area includes: determining the area corresponding to the disaster-affected area in the geographic information system; obtaining the historical disaster log corresponding to the area; judging whether to expand the disaster-affected area according to the historical disaster log; If not, obtain the default safety distance and determine the target safety area in combination with the disaster-affected area.

In a specific implementation, after the step of judging whether to expand the disaster-affected area according to the historical disaster log, it further includes: if it is determined according to the historical disaster log that the disaster-affected area needs to be expanded, in the historical Acquiring specific disaster data from the disaster log; obtaining the impact weight of the specific disaster data; matching in the preset strategy set according to the impact weight to obtain the corresponding expansion strategy; determining according to the expansion strategy and the disaster-affected area Target safe area.

Step S60: Obtain the location information of the current target terminal and determine the transfer type of the target terminal.

It should be noted that the transfer type to which the target terminal belongs refers to whether the preset transfer mode corresponding to the target terminal is the first type of transfer type or the second type of transfer type. Pre-documentation is done by enabling terminal transfer types within the acquisition target area.

Step S70: When the target terminal belongs to the first type of transfer type, determine the first type of evacuation route according to the location information, the first type of feasible passage and the target safety area, and send it to the target terminal.

Step S80: When the target terminal belongs to the second type of transfer type, determine the second type of evacuation route according to the location information, the second type of feasible passage and the target safety area, and send it to the target terminal.

In this embodiment, when the preset signal is detected, the disaster information is obtained in the geographic information system; the disaster-affected area is determined according to the disaster level and disaster range in the disaster information; the first type of feasible channel is determined in combination with the current road condition information of the disaster-affected area and the second type of feasible channel; obtain the historical disaster records in the geographic information system to determine the target safety area; obtain the location information of the current target terminal and determine the transfer type; combine the location information, the corresponding feasible channel and the target according to the transfer type of the target terminal The safety zone determines the evacuation route of the target terminal and sends it to the target terminal; it realizes the generation of evacuation routes through the geographic information system combined with the actual road conditions at the first time a disaster occurs, and further reduces people's losses due to disasters.

Referring to FIG. 3 , it is a schematic flowchart of the second embodiment of the route planning method based on the geographic information system of the present invention.

Based on the first embodiment above, the step S60 of the route planning method based on the geographical information system in this embodiment further includes:

Step S601: Obtain the location information of the current target terminal, and determine the current location tile of the target terminal according to the location information of the target terminal.

It should be noted that the disaster-affected area will be divided into four areas according to the southeast, northwest, and disaster-stricken people in each area will have different evacuation route plans.

In a specific implementation, after the location information of the target terminal is determined, the specific plate of the disaster-affected area where the target terminal is located can be determined. Choose different evacuation routes according to specific sectors.

Step S602: Determine the transfer direction corresponding to the target terminal according to the current location tile.

In a specific implementation, after the current position plate is determined, the boundary of the safety area closest to the current plate position is obtained.

Step S603: Determine the transfer type corresponding to the target terminal according to the identification code corresponding to the target terminal in the geographic information system.

It should be noted that the identification code corresponding to the target terminal is pre-entered by the system administrator, and the identification code is used to determine whether the user adopts the first type of transfer or the second type of transfer.

Further, in order to accurately match the characteristics of the target terminal to effectively plan the evacuation route, when the target terminal belongs to the first type of transfer type, determine according to the location information, the first type of feasible channel, and the target safety area The step of sending the first type of evacuation route to the target terminal includes: if the target terminal belongs to the first transfer type, matching the first type according to the location information of the target terminal, the transfer direction and the target safety area Feasible passage; generating a first type of evacuation route according to the matching result; determining a route receiving terminal according to the identification code corresponding to the target terminal; sending the first type of evacuation route to the route receiving terminal.

In this embodiment, by acquiring the location information of the current target terminal, the current location panel of the target terminal is determined according to the location information of the target terminal; the transfer direction corresponding to the target terminal is determined according to the current location panel; In the information system, the transfer type corresponding to the target terminal is judged according to the identification code corresponding to the target terminal; the technical effect of rationally generating an evacuation route based on the specific information of the target terminal is realized.

In addition, an embodiment of the present invention also proposes a computer-readable storage medium, on which a program of route planning based on a geographic information system is stored, and the program of route planning based on a geographic information system is executed by a processor to realize The steps of the method for route planning based on the geographic information system as described above.

Referring to FIG. 4 , FIG. 4 is a structural block diagram of a first embodiment of an apparatus for route planning based on a geographic information system according to the present invention.

As shown in Figure 4, the route planning device based on the geographical information system proposed by the embodiment of the present invention includes:

An information acquisition module 10, configured to acquire disaster information in a geographic information system when a preset signal is detected;

The area determination module 20 is used to determine the area affected by the disaster according to the disaster level and the disaster range in the disaster information;

A road condition acquisition module 30, configured to acquire current road condition information in the disaster-affected area in the geographic information system;

A channel determination module 40, configured to determine a first type of feasible channel and a second type of feasible channel according to the current road condition information;

A safe area determination module 50, configured to obtain the historical disaster log of the area to which the disaster-affected area belongs in the geographic information system, and determine the target safe area in combination with the disaster-affected area;

A diversion type determination module 60, configured to obtain location information of the current target terminal and determine the diversion type to which the target terminal belongs;

The first-type diversion module 70 is configured to determine a first-type evacuation route according to the location information, the first-type feasible passage, and the target safety area when the target terminal belongs to the first-type diversion type, and send it to the target terminal;

The second-type diversion module 80 is configured to determine a second-type evacuation route according to the location information, the second-type feasible passage, and the target safety area when the target terminal belongs to the second-type diversion type and send it to the target terminal.

It should be understood that the above is only an example, and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings according to needs, and the present invention is not limited thereto.

In this embodiment, when the preset signal is detected, the disaster information is obtained in the geographic information system; the disaster-affected area is determined according to the disaster level and disaster range in the disaster information; the first type of feasible channel is determined in combination with the current road condition information of the disaster-affected area and the second type of feasible channel; obtain the historical disaster records in the geographic information system to determine the target safety area; obtain the location information of the current target terminal and determine the transfer type; combine the location information, the corresponding feasible channel and the target according to the transfer type of the target terminal The safety zone determines the evacuation route of the target terminal and sends it to the target terminal; it realizes the generation of evacuation routes through the geographic information system combined with the actual road conditions at the first time a disaster occurs, and further reduces people's losses due to disasters.

In one embodiment, the area determination module 20 is further configured to match the corresponding range of influence in the geographic information system according to the disaster level in the disaster information; determine the actual disaster area according to the disaster range in the disaster information area: determine the disaster-affected area according to the affected area and the actual disaster-affected area.

In an embodiment, the channel determination module 40 is further configured to obtain current passable road information from the current road condition information; determine whether the passable road information satisfies the filtering condition; if so, obtain the first preset condition to select a first type of passable passage from the passable road information, and obtain a second preset condition to select a second type of passable passage from the passable road information.

In one embodiment, the safety area determination module 50 is further configured to determine the area corresponding to the disaster-affected area in the geographic information system; obtain the historical disaster log corresponding to the area; Determine whether the disaster-affected area needs to be expanded; if not, obtain a default safety distance and determine a target safe area in combination with the disaster-affected area.

In an embodiment, the safe area determination module 50 is further configured to obtain specific disaster data from the historical disaster log if it is determined that the disaster-affected area needs to be expanded according to the historical disaster log; The influence weight of the disaster data; matching in the preset strategy set according to the influence weight to obtain the corresponding expansion strategy; determining the target safe area according to the expansion strategy and the disaster-affected area.

In one embodiment, the transfer type determination module 60 is further configured to obtain the location information of the current target terminal, determine the current location board of the target terminal according to the location information of the target terminal; determine the current location board according to the current location board The transfer direction corresponding to the target terminal; judging the transfer type corresponding to the target terminal according to the identification code corresponding to the target terminal in the geographic information system.

In an embodiment, the diversion type determination module 60 is further configured to match the first category according to the location information of the target terminal, the diversion direction and the target security area if the target terminal belongs to the first diversion type Feasible passage; generating a first type of evacuation route according to the matching result; determining a route receiving terminal according to the identification code corresponding to the target terminal; sending the first type of evacuation route to the route receiving terminal.

It should be noted that the workflow described above is only illustrative and does not limit the protection scope of the present invention. In practical applications, those skilled in the art can select part or all of them to implement according to actual needs. The purpose of the scheme of this embodiment is not limited here.

In addition, for technical details not described in detail in this embodiment, reference may be made to the method for route planning based on a geographical information system provided in any embodiment of the present invention, which will not be repeated here.

Furthermore, it should be noted that in this document, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, but also other elements not expressly listed, or elements inherent in such a process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as a read-only memory (Read Only Memory) , ROM)/RAM, magnetic disk, optical disk), including several instructions to make a terminal device (which can be a mobile phone, computer, server, or network device, etc.) execute the methods described in various embodiments of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. A path planning method based on a geographic information system is characterized by comprising the following steps:

when a preset signal is detected, acquiring disaster information in a geographic information system;

determining a disaster affected area according to the disaster grade and the disaster range in the disaster information;

acquiring current road condition information in the affected area in the geographic information system;

determining a first feasible channel and a second feasible channel according to the current road condition information;

acquiring a historical disaster log of a sub-area to which the disaster affected area belongs in the geographic information system, and determining a target safety area by combining the disaster affected area;

acquiring position information of a current target terminal and judging a transfer type of the target terminal;

when the target terminal belongs to a first transfer type, determining a first refuge path according to the position information, the first feasible channel and the target safety area and sending the first refuge path to the target terminal;

and when the target terminal belongs to a second transfer type, determining a second refuge path according to the position information, the second feasible channel and the target safety area and sending the second refuge path to the target terminal.

2. The geographic information system-based path planning method according to claim 1, wherein the step of determining the affected area according to the disaster level and the disaster range in the disaster information comprises:

matching a corresponding influence range in the geographic information system according to the disaster level in the disaster information;

determining an actual disaster area according to the disaster range in the disaster information;

and determining the affected area of the disaster according to the affected area and the actual affected area.

3. The geographic information system-based path planning method according to claim 1, wherein the step of determining a first type of feasible channel and a second type of feasible channel according to the current traffic information comprises:

acquiring current passable road information from the current road condition information;

judging whether the passable road information meets a screening condition;

if yes, acquiring a first preset condition to screen a first type of passable passage in the passable road information, and acquiring a second preset condition to screen a second type of passable passage in the passable road information.

4. The geographic information system-based path planning method according to claim 1, wherein the step of obtaining a historical disaster log of a segment to which the disaster-affected area belongs in the geographic information system and determining a target safety area in combination with the disaster-affected area comprises:

determining a parcel corresponding to the affected area in the geographic information system;

acquiring a historical disaster log corresponding to the parcel;

judging whether the affected area needs to be enlarged or not according to the historical disaster log;

and if not, acquiring a default safety distance and determining a target safety region by combining the disaster affected region.

5. The geographic information system-based path planning method according to claim 4, wherein after the step of determining whether the affected area needs to be enlarged according to the historical disaster log, the method further comprises:

if the disaster affected area needs to be expanded according to the historical disaster affected log, acquiring specific disaster data from the historical disaster affected log;

acquiring the influence weight of the specific disaster data;

matching in a preset strategy set according to the influence weight to obtain a corresponding expansion strategy;

and determining a target safety area according to the expansion strategy and the disaster affected area.

6. The geographic information system-based path planning method according to claim 1, wherein the step of obtaining the location information of the current target terminal and determining the transfer type to which the target terminal belongs comprises:

acquiring the position information of a current target terminal, and determining a current position plate of the target terminal according to the position information of the target terminal;

determining a transfer direction corresponding to the target terminal according to the current position plate;

and judging the transfer type corresponding to the target terminal in the geographic information system according to the identification code corresponding to the target terminal.

7. The geographic information system-based path planning method according to claim 6, wherein the step of determining a first type of refuge path according to the location information, a first type of feasible channel and the target safety area and sending the first type of refuge path to the target terminal when the target terminal belongs to a first type of transfer type comprises:

if the target terminal belongs to a first transfer type, matching a first type of feasible channel according to the position information, the transfer direction and the target safety region of the target terminal;

generating a first refuge path according to the matching result;

determining a route receiving terminal according to the identification code corresponding to the target terminal;

and sending the first refuge path to the route receiving terminal.

8. A route planning device based on a geographic information system is characterized in that the route planning device based on the geographic information system comprises:

the information acquisition module is used for acquiring disaster information in the geographic information system when a preset signal is detected;

the area determining module is used for determining the area affected by the disaster according to the disaster grade and the disaster range in the disaster information;

the road condition acquisition module is used for acquiring current road condition information in the disaster affected area in the geographic information system;

the channel determining module is used for determining a first feasible channel and a second feasible channel according to the current road condition information;

a safety zone determining module, configured to obtain a historical disaster log of a zone to which the disaster-affected zone belongs in the geographic information system, and determine a target safety zone in combination with the disaster-affected zone;

the transfer type determining module is used for acquiring the position information of the current target terminal and judging the transfer type of the target terminal;

the first-class transfer module is used for determining a first-class refuge path according to the position information, the first-class feasible channel and the target safety area and sending the first-class refuge path to the target terminal when the target terminal belongs to a first-class transfer type;

and the second-type transferring module is used for determining a second-type refuge path according to the position information, the second-type feasible channel and the target safety area and sending the second-type refuge path to the target terminal when the target terminal belongs to a second-type transferring type.

9. A computer device, characterized in that the device comprises: a memory, a processor that, when executing computer instructions stored by the memory, performs the method of any of claims 1-7.

10. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 7.

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