Fire escape path screening method and system based on building information model

Abstract

The invention provides a fire escape path screening method and system based on a building information model. The method comprises the following steps: acquiring position information of all doors and position information of all escape exits based on a preset building information model; establishing escape paths from all doors to all escape exits through a preset path planning model, generating an escape path list, and performing visual display; the user selects the shortest escape path corresponding to the door closest to the user from the escape path list, and escape path screening is completed. According to the invention, the problems of low fire escape path planning efficiency and poor safety in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of path planning, and in particular to a fire escape path screening method and system based on a building information model. Background Art

[0002] Fire is a common disaster, and the losses caused by fire every year are very large. Due to the uncertainty of fire and the smoke, the field of vision is limited when escaping from a fire, and it is impossible to find a safe escape route. Therefore, the probability of successful escape during a fire is very small. When a fire occurs, it is not enough to escape safely only by using the fire escape map in the building. Therefore, using the path planning algorithm to plan the path according to the fire location is the focus of current research. However, the current fire escape path planning still has the disadvantages of lack of fire diffusion and fixed position of escapees. Fire is a process of continuous spread. Escape path planning based on the current fire situation alone cannot ensure the safety of the escape path at the next moment. Moreover, the escapees are constantly moving, and their positions at each moment cannot be sensed, so it is impossible to ensure that the current escape path is the safest escape path.

[0003] Fire safety has always been a focus of everyone's concern. In recent years, most casualties caused by fires have occurred in complex multi-story buildings. People are often unable to escape from the fire scene within a safe time, and their lives and property are greatly threatened. However, complex multi-story buildings are usually only equipped with simple devices such as fire-fighting equipment, fire alarms, and exit signs. Moreover, when a fire occurs, escapees are prone to panic, and as the fire changes, they become different. Therefore, even in a familiar environment, they cannot find a reasonable escape route and miss the precious escape opportunity.

[0004] The existing fire escape method and system, when a fire signal is obtained, dynamically determines the escape path of each floor in the building according to the location information of the fire source in the fire signal; obtains all emergency sign lamps on each floor of the building, and sends control signals to all emergency sign lamps on the escape path respectively, so that all emergency sign lamps change the corresponding display information according to the escape path, and the display information is provided to the escape personnel to achieve safe escape; or when the fire detection device detects a fire, the disaster information is sent to the LoRa gateway device through the LoRa protocol, wherein the disaster information includes real-time data information of the disaster and the ID information of the fire detection device; the LoRa gateway device sends the received real-time data information of the disaster to the LoRa server; the LoRa server sends the real-time data information of the disaster to the LoRa server according to the The real-time data information of the disaster situation and the ID information of the fire detection equipment are used to construct the optimal escape route, and the optimal escape route is presented to the escape personnel through the escape sign arranged in the fire passage; there is also a method for obtaining the current temperature information of several temperature sensors, and the temperature sensors are arranged at intervals at each passage of the current building; the temperature information within the first preset temperature range is screened, and the area corresponding to the screened temperature information is determined as the candidate target area; the path from the starting area to each candidate target area is determined as the alternative path; whether the alternative path passes through the dangerous area is detected, and the dangerous area is the area corresponding to the temperature information within the second preset temperature range; when it is detected that the alternative path does not pass through the dangerous area, the alternative path is marked; the path with the shortest distance among all marked alternative paths is determined as the escape route. However, these existing methods still have the following disadvantages: lack of safe path planning, only through the current position of the escape personnel and the fire situation, it is impossible to ensure that all nodes on the escape path are still safe after the escape personnel arrive after a period of time; it takes a long time, the current path planning algorithm only plans the path according to the current situation, and then repeats the process continuously, and each planning requires recalculating a large number of nodes, which takes a long time. Therefore, there is an urgent need to design a new fire scene safe escape path analysis method. Summary of the invention

[0005] The present invention provides a fire escape route screening method and system based on a building information model, which are used to solve the problems of low efficiency and poor safety in existing fire escape route planning.

[0006] The present invention provides a fire escape path screening method based on a building information model, comprising: Obtaining the location information of all doors and all escape exits based on a preset building information model; Create escape paths from all doors to all exits through a preset path planning model, generate an escape path list and display it visually; The user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening.

[0007] According to a fire escape path screening method based on a building information model provided by the present invention, the method of obtaining the location information of all doors and the location information of all escape exits based on a preset building information model specifically includes: Extract identification information of doors and escape exits from the preset building information model; Retrieving a distribution map of all doors and all escape exits from a database of a building information model based on the identification information; The location information of all doors and the location information of all escape exits are acquired based on the distribution map.

[0008] According to a fire escape path screening method based on a building information model provided by the present invention, the obtaining of location information of all doors and location information of all escape exits based on the distribution map specifically includes: Establishing a coordinate system based on the distribution map, assigning corresponding coordinate information to all doors and escape exits in the coordinate system; Delete duplicate location points based on the coordinate information of all doors and escape exits to generate final complete coordinate information; The location information of all doors and the location information of all escape exits are obtained according to the final complete coordinate information.

[0009] According to a fire escape path screening method based on a building information model provided by the present invention, the escape paths from all doors to all escape exits are created through a preset path planning model, and an escape path list is generated and visualized, which specifically includes: Based on the preset path planning model, with a selected door as the starting point and all escape exits as the end point, escape paths from the selected door to all escape exits are created respectively; Repeat the above steps to batch create escape paths from each door to all escape exits; Generate an escape path list based on all escape paths and display it visually.

[0010] According to a fire escape path screening method based on a building information model provided by the present invention, the user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening, which specifically includes: Get the user's current location information and select the nearest door based on the user's current location information; Based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening.

[0011] According to a fire escape path screening method based on a building information model provided by the present invention, based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening, specifically including: Calculate the escape path distance from the escape path list starting from the currently selected door to all escape exits; Compare all escape route distances and generate a distance list, sorting them from closest to farthest; The user selects the closest escape route based on actual needs to complete the escape route screening.

[0012] The present invention also provides a fire escape path screening system based on a building information model, the system comprising: An information acquisition module, used to acquire the location information of all doors and all escape exits based on a preset building information model; The escape path generation module is used to create escape paths from all doors to all escape exits through a preset path planning model, generate an escape path list and display it visually; The escape path selection module is used for the user to select the shortest escape path corresponding to the door closest to the user from the escape path list to complete the escape path screening. The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-mentioned fire escape path screening methods based on building information models when executing the computer program.

[0013] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the fire escape path screening method based on a building information model as described in any one of the above is implemented.

[0014] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the fire escape path screening method based on a building information model as described in any one of the above is implemented.

[0015] The present invention provides a fire escape route screening method and system based on building information model, which obtains the location information of all doors and escape exits based on the building information model, and performs batch planning of escape routes from all doors to all escape exits, thereby improving planning efficiency; all escape routes are visualized, and the user can quickly select the corresponding shortest escape route based on the nearest door as the starting point, thereby ensuring the safety and timeliness of escape and improving the survival rate of trapped persons in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a flow chart of a fire escape path screening method based on a building information model provided by the present invention.

[0018] Figure 2 It is a schematic diagram of escape route planning provided by the present invention.

[0019] Figure 3 The present invention is a schematic diagram of module connection of a fire escape path screening system based on a building information model.

[0020] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention.

[0021] Reference numerals: 110: information acquisition module; 120: escape route generation module; 130: escape route selection module; 410: processor; 420: communication interface; 430: memory; 440: communication bus. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1 and Figure 2 The present invention describes a fire escape route screening method based on a building information model, comprising: step 100, obtaining location information of all doors and location information of all escape exits based on a preset building information model.

[0024] In the present invention, the corresponding building information model is obtained according to different types of buildings, and the building information includes all the information of the building, including building geometry information, including the three-dimensional geometry of the building, structure, floor plan and mechanical and electrical equipment (MEP) system; materials and properties, the material, weight, durability and other physical properties of each building component; cost information, cost data related to each component, to help budget control; schedule, about the time arrangement of each stage of the project, such as construction sequence and duration; sustainability information, data on energy efficiency, environmental impact assessment, etc.; maintenance and operation guide, documents required for facility management, such as equipment manuals, maintenance plans; specifications and standards, design specifications, construction standards and relevant regulatory requirements followed. By analyzing the building floor plan, the location information of all doors on each floor of the building and the identification information of the escape exit can be obtained.

[0025] By extracting identification information of doors and escape exits from a preset building information model; retrieving a distribution map of all doors and all escape exits from a database of the building information model based on the identification information; and acquiring location information of all doors and all escape exits based on the distribution map.

[0026] Wherein, obtaining the location information of all doors and the location information of all escape exits based on the distribution map specifically includes: Establishing a coordinate system based on the distribution map, assigning corresponding coordinate information to all doors and escape exits in the coordinate system; Delete duplicate location points based on the coordinate information of all doors and escape exits to generate final complete coordinate information; The location information of all doors and the location information of all escape exits are obtained according to the final complete coordinate information.

[0027] By accurately obtaining the location information of doors and escape exits, it can assist in the subsequent planning of escape routes and screen out the best escape route.

[0028] Step 200: Create escape paths from all doors to all escape exits through a preset path planning model, generate an escape path list and display it visually.

[0029] In the present invention, based on a preset path planning model, an escape path from a selected door to all escape exits is created with a selected door as the starting point and all escape exits as the end point; Repeat the above steps to batch create escape paths from each door to all escape exits; Generate an escape path list based on all escape paths and display it visually.

[0030] Specifically, the acquired door location information and escape exit location information are taken as input information and input into a preset path planning model. The path planning model creates an escape path from the selected door to the selected escape exit with a selected door as the starting point and an escape exit as the end point. Then, with all the remaining escape exits as the focus, escape paths from the selected door to all the remaining escape exits are created, thus completing the creation of escape paths from a single door to all escape exits.

[0031] Repeat the above process, using each door's location information as the starting point, and create escape paths to all exits. Each escape path is marked with the path length. All escape paths are summarized to form an escape path list, which is displayed on the visual terminal.

[0032] Step 300: The user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening.

[0033] Specifically including: obtaining the user's current location information, and selecting the nearest door nearby according to the user's current location information; Based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening.

[0034] In the present invention, after the user logs in to the escape system through the terminal, the user's current location information is obtained through the terminal. Based on the user's current location, the location information of the doors within the set radius is obtained with the user's current location as the center of the circle. The user selects the nearest door as the starting point based on the location information of the doors within the set range. The shortest escape path is selected based on the pre-generated escape path list to complete the escape path screening.

[0035] By creating escape routes in batches and being able to quickly select the shortest escape route based on the nearest door as the starting point, it helps trapped people escape quickly.

[0036] Based on the nearest door selected, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening, including: Calculate the escape path distance from the escape path list starting from the currently selected door to all escape exits; Compare all escape route distances and generate a distance list, sorting them from closest to farthest; The user selects the closest escape route based on actual needs to complete the escape route screening.

[0037] In the present invention, the escape path list shows the distance of the escape path starting from the currently selected door and ending at all escape exits for calculation. The escape path distance includes the distance calculation of all corners, stairs and other relevant special positions. After all the escape path distance calculations are completed, a corresponding distance list is generated. The shortest escape path is ranked first in the list, and the escape paths are arranged in order according to their lengths. The longest escape path is ranked last in the list. The user selects the closest escape path in front according to actual needs to complete the escape path screening. According to the indication of the closest escape path, the user completes the escape.

[0038] In a specific embodiment, it is assumed that a complete building information model has been established for a certain building, and the model contains information of important structures such as all rooms, doors, stairwells, elevator shafts, etc. In addition, the model also records the locations of all escape exits in the building.

[0039] Here are the specific implementation steps: First, extract the identification information of doors and escape exits from the building information model. This usually involves reading relevant metadata from the model database, such as door number, type, location coordinates, etc. Then, based on this identification information, the system will retrieve the distribution map of all doors and escape exits in the entire building. On this basis, by establishing a three-dimensional coordinate system, a precise coordinate value is assigned to each door and escape exit. The system then checks for duplicate location points and deletes these redundant data to generate a final, accurate location information list.

[0040] The system starts to create escape routes. For each door, the system will use a pre-set path planning algorithm (such as the Dijkstra algorithm) to calculate the best route to each escape exit. Determine the escape route with the shortest path length or the least estimated time. This process will be repeated until all doors have completed the path planning to all escape exits. Finally, all calculated escape routes will be organized into an escape route list and displayed to the user through a graphical interface.

[0041] When the user needs to choose an escape route, the system will first determine the user's current location. If the user carries a device with positioning capabilities, such as a smartphone with GPS or Bluetooth beacon, the system can obtain the user's real-time location through wireless signals. The system will then select the door closest to the user from the escape route list and display all possible paths from this door to each escape exit. The user can decide which path to choose based on personal circumstances, such as physical condition or preference for certain paths.

[0042] Among them, the user clicks "Create Path Network" in the tab to manually select the door instance of the escape exit on this floor. After completing the selection and clicking "Finish", the path instance will be automatically generated. The plug-in abstracts the Path as the Model in the MVVM mode. Click "Path Inspector" to see the window, which displays the starting coordinates, path length, and path ID of the Path instance, and provides the functions of locating the instance and deleting the path. For each set of data, as long as the shortest path meets the requirements of "GB 50016-2014", it can pass the review. For unimportant paths, they can be manually deleted.

[0043] Implementation method of related plug-ins: The core code of the plug-in is written in C# and WPF technology to implement this function, and has a certain reasonable architecture, which enhances the extensibility of this plug-in so as to add more functions. The plug-in function "Create path network" is directly implemented through the external command function provided by RevitAPI. The function "Path Inspector" abstracts the model instance "Path of Travel (path)" in the Revit file, gives it properties such as name, length, and ID, and displays it in the window interface through the middle layer for easy management. The code architecture of the plug-in is based on the MVVM architecture of the MvvmLight package. By abstracting the "Path of Travel (path)", giving it corresponding properties and displaying it in the foreground window, and then calling this function by creating an interface to add, edit, delete, and locate the middle layer.

[0044] A fire escape path screening method based on a building information model is provided according to the present invention. By acquiring the location information of all doors and escape exits based on the building information model, batch planning of escape paths from all doors to all escape exits is performed to improve planning efficiency. All escape paths are visualized, and the user can quickly select the corresponding shortest escape path based on the nearest door as the starting point, thereby ensuring the safety and timeliness of escape and improving the survival rate of trapped persons in the event of a fire.

[0045] refer to Figure 3 The present invention also discloses a fire escape path screening system based on a building information model, the system comprising: An information acquisition module 110 is used to acquire the location information of all doors and the location information of all escape exits based on a preset building information model; The escape path generation module 120 is used to create escape paths from all doors to all escape exits through a preset path planning model, generate an escape path list and display it visually; The escape route selection module 130 is used for the user to select the shortest escape route corresponding to the door closest to the user from the escape route list to complete the escape route screening.

[0046] The location information of all doors and all escape exits is obtained based on the preset building information model, specifically including: Extract identification information of doors and escape exits from the preset building information model; Retrieving a distribution map of all doors and all escape exits from a database of a building information model based on the identification information; The location information of all doors and the location information of all escape exits are acquired based on the distribution map.

[0047] Acquiring the location information of all doors and all escape exits based on the distribution map specifically includes: Establishing a coordinate system based on the distribution map, assigning corresponding coordinate information to all doors and escape exits in the coordinate system; Delete duplicate location points based on the coordinate information of all doors and escape exits to generate final complete coordinate information; The location information of all doors and the location information of all escape exits are obtained according to the final complete coordinate information.

[0048] Create escape paths from all doors to all exits through the preset path planning model, generate an escape path list and visualize it, including: Based on the preset path planning model, with a selected door as the starting point and all escape exits as the end point, escape paths from the selected door to all escape exits are created respectively; Repeat the above steps to batch create escape paths from each door to all escape exits; Generate an escape path list based on all escape paths and display it visually.

[0049] The user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening, which specifically includes: Get the user's current location information and select the nearest door based on the user's current location information; Based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening.

[0050] Based on the nearest door selected, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening, including: Calculate the escape path distance from the escape path list starting from the currently selected door to all escape exits; Compare all escape route distances and generate a distance list, sorting them from closest to farthest; The user selects the closest escape route based on actual needs to complete the escape route screening.

[0051] A fire escape path screening system based on a building information model is provided according to the present invention. By acquiring the location information of all doors and escape exits based on the building information model, batch planning of escape paths from all doors to all escape exits is performed to improve planning efficiency. All escape paths are visualized, and the user can quickly select the corresponding shortest escape path based on the nearest door as the starting point, thereby ensuring the safety and timeliness of escape and improving the survival rate of trapped persons in the event of a fire.

[0052] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communications interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute a fire escape path screening method based on a building information model, the method comprising: obtaining the location information of all doors and the location information of all escape exits based on a preset building information model; creating escape paths from all doors to all escape exits through a preset path planning model, generating an escape path list and visually displaying it; the user selects the shortest escape path corresponding to the door closest to him from the escape path list to complete the escape path screening.

[0053] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0054] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the fire escape path screening method based on the building information model provided by the above-mentioned methods, and the method includes: obtaining the location information of all doors and the location information of all escape exits based on a preset building information model; creating escape paths from all doors to all escape exits through a preset path planning model, generating an escape path list and visually displaying it; the user selects the shortest escape path corresponding to the door closest to him from the escape path list to complete the escape path screening.

[0055] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the fire escape path screening method based on a building information model provided by the above-mentioned methods, the method comprising: obtaining the location information of all doors and the location information of all escape exits based on a preset building information model; creating escape paths from all doors to all escape exits through a preset path planning model, generating an escape path list and visually displaying it; the user selects the shortest escape path corresponding to the door closest to him from the escape path list to complete the escape path screening.

[0056] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0057] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire escape route screening method based on building information model, characterized in that: include: Obtaining the location information of all doors and all escape exits based on a preset building information model; Create escape paths from all doors to all exits through a preset path planning model, generate an escape path list and display it visually; The user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening.

2. The fire escape route screening method based on building information model according to claim 1 is characterized in that: The obtaining of the location information of all doors and the location information of all escape exits based on the preset building information model specifically includes: Extract identification information of doors and escape exits from the preset building information model; Retrieving a distribution map of all doors and all escape exits from a database of a building information model based on the identification information; The location information of all doors and the location information of all escape exits are acquired based on the distribution map.

3. The fire escape route screening method based on building information model according to claim 2 is characterized in that: The obtaining of the location information of all doors and the location information of all escape exits based on the distribution map specifically includes: Establishing a coordinate system based on the distribution map, assigning corresponding coordinate information to all doors and escape exits in the coordinate system; Delete duplicate location points based on the coordinate information of all doors and escape exits to generate final complete coordinate information; The location information of all doors and the location information of all escape exits are obtained according to the final complete coordinate information.

4. The fire escape route screening method based on building information model according to claim 1, characterized in that: The method of creating escape paths from all doors to all escape exits through a preset path planning model, generating an escape path list and performing a visual display includes: Based on the preset path planning model, with a selected door as the starting point and all escape exits as the end point, escape paths from the selected door to all escape exits are created respectively; Repeat the above steps to batch create escape paths from each door to all escape exits; Generate an escape path list based on all escape paths and display it visually.

5. The fire escape route screening method based on building information model according to claim 1, characterized in that: The user selects the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening, which specifically includes: Get the user's current location information and select the nearest door based on the user's current location information; Based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening.

6. The fire escape route screening method based on building information model according to claim 5 is characterized in that: Based on the selected nearest door, the shortest escape path starting from the currently selected door and ending at all escape exits is displayed from the escape path list to complete the escape path screening, specifically including: Calculate the escape path distance from the escape path list starting from the currently selected door to all escape exits; Compare all escape route distances and generate a distance list, sorting them from closest to farthest; The user selects the closest escape route based on actual needs to complete the escape route screening.

7. A fire escape route screening system based on building information model, characterized in that: The system comprises: An information acquisition module, used to acquire the location information of all doors and all escape exits based on a preset building information model; The escape path generation module is used to create escape paths from all doors to all escape exits through a preset path planning model, generate an escape path list and display it visually; The escape path selection module is used for the user to select the shortest escape path corresponding to the door closest to him / her from the escape path list to complete the escape path screening.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the fire escape path screening method based on the building information model as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the fire escape path screening method based on a building information model as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the fire escape path screening method based on a building information model as claimed in any one of claims 1 to 6 is implemented.

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