A method, system, medium and device for dynamic planning of evacuation paths in buildings

Abstract

The present invention belongs to the technical field of emergency route planning, and provides a method, system, medium and equipment for dynamic planning of evacuation paths in buildings. The technical scheme is as follows: a device network is formed by connecting lines, and there is no need to parse plane drawings, thereby eliminating useless information irrelevant to the path, and cleverly converting plane graphics into graphics of nodes and line segments. Based on the graph theory method, the scene is abstracted into an undirected graph through connecting lines, which can simply and intuitively display the safe exits and various feasible evacuation paths in the scene, simplifying the subsequent path calculation process, and the optimized breadth-first path algorithm has low complexity and low calculation delay, and can realize real-time path planning and improve escape efficiency, and the method is applicable to all complex scenes.

Description

Technical Field

[0001] The present invention belongs to the technical field of emergency evacuation route planning, and in particular relates to a method, system, medium and equipment for dynamic planning of evacuation paths in buildings. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Existing emergency lighting and evacuation indication systems mostly use plans to identify the evacuation route when marking the direction of lamps in fire mode or use automatic recognition of building attributes in drawings. Among them, the plan refers to writing the indication direction of the lamps in an emergency and the fire alarm point into a linkage formula, that is, after the fire alarm point alarms, the lamps in the linkage formula point to a fixed direction; the automatic recognition of drawings means directly importing the building floor plan and automatically identifying the evacuation route according to the icons of different floors in the floor plan.

[0004] However, the above method has major problems in actual application. The problems are: 1. The debugging personnel need to compile a large amount of lighting plan information according to the actual fire alarm points; 2. When multiple fire alarms occur, the direction of the lamps will be wrong, and the personnel cannot adjust the path in time according to the fire situation. They are prone to mistakenly enter the fire area, resulting in reduced escape opportunities. When changing the path, they will also conflict with the previous escapees and cause trampling accidents; 3. The automatic recognition method has a large amount of information in the building plan, complex recognition, and low accuracy, which leads to a large amount of drawing processing and manual confirmation in actual use, and is not very practical. Summary of the invention

[0005] In order to solve at least one technical problem existing in the above-mentioned background technology, the present invention provides a method, system, medium and equipment for dynamic planning of evacuation paths in buildings, which provides an abstract method for automatic planning of dynamic evacuation paths in buildings, does not require complex automatic image recognition, and abstracts the building plan through the connection method, which greatly facilitates the use of fire operation and maintenance personnel, reduces the requirements for computing equipment, and improves the stability of the system.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a method for dynamically planning an evacuation path in a building, comprising the following steps:

[0008] Obtain the floor plan of the target building;

[0009] Extract the location coordinates and equipment codes of emergency sign lamps and fire alarm detectors from the floor plan of the target building;

[0010] Get the alarm status of all fire alarm detectors;

[0011] The fire point is determined according to the alarm status of the fire alarm detector. The fire alarm detector corresponding to the fire point is taken as the vertex, and the emergency sign lamp is taken as the node. All adjacent nodes connected to the vertex are visited in sequence, and the visited nodes are marked. Then, the marked nodes are taken as the vertex, and all adjacent nodes connected to the marked nodes are traversed until the shortest safe exit can be found on each line connected to the vertex fire alarm detector, and the evacuation path is obtained.

[0012] Identify the indication direction of the emergency sign lamps on the evacuation path, adjust the identified indication direction according to the planned indication direction, and control the emergency sign lamps to change the indication direction based on the adjusted indication direction.

[0013] Furthermore, after obtaining the floor plan of the target building, the emergency sign lamps and fire alarm detectors are arranged at corresponding positions according to the actual position information in the drawing, and then all the emergency sign lamps and fire alarm detectors are connected into a device network using wiring controls.

[0014] Furthermore, when identifying the indication direction of the emergency sign lamps on the evacuation path, the up, down, left and right directions are identified according to the principle of departing from the fire point and the position coordinate information according to the breadth-first algorithm.

[0015] Furthermore, the identified indication direction is adjusted according to the planned indication direction, including: if the identified indication direction is consistent with the evacuation path, keeping the indication direction of the original emergency sign lamp unchanged; if the identified indication direction is inconsistent with the evacuation path, changing the indication direction of the original emergency sign lamp to the opposite direction.

[0016] Furthermore, the method also includes obtaining new fire detector alarm information. If it conflicts with the previously planned path, all sign lamps on this path maintain their current directions unchanged according to the principle of first alarm priority.

[0017] Furthermore, when obtaining the status of the fire alarm detector, the alarm status of all the fire alarm detectors in the system is obtained according to the agreed fire alarm communication protocol by connecting to the fire alarm detector.

[0018] Furthermore, after the identified indication direction is adjusted according to the planned indication direction, a control instruction for changing the indication direction of the emergency sign lamp is generated.

[0019] A second aspect of the present invention provides a system for dynamically planning an evacuation path in a building, comprising:

[0020] A drawing acquisition module is used to acquire a plan drawing of a target building;

[0021] A position code extraction module, which is used to extract the position coordinates and equipment codes of emergency sign lamps and fire alarm detectors in the plan drawings of the target building;

[0022] An alarm status acquisition module, which is used to obtain the alarm status of all fire alarm detectors;

[0023] An evacuation path calculation module is used to determine the fire point according to the alarm status of the fire alarm detector, take the fire alarm detector corresponding to the fire point as the vertex, take the emergency sign lamp as the node, sequentially visit all adjacent nodes connected to the vertex, mark the visited nodes, and then take the marked node as the vertex to traverse all adjacent nodes connected to the marked node until the shortest safe exit can be found on each line connected to the vertex fire alarm detector, thereby obtaining an evacuation path;

[0024] The direction adjustment module is used to identify the indication direction of the emergency sign lamp on the evacuation path, adjust the identified indication direction according to the planned indication direction, and control the emergency sign lamp to change the indication direction based on the adjusted indication direction.

[0025] A third aspect of the present invention provides a computer-readable storage medium.

[0026] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps in the above-mentioned method for dynamically planning an evacuation path in a building.

[0027] A fourth aspect of the present invention provides a computer device.

[0028] A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the above-mentioned method for dynamically planning an evacuation path in a building are implemented.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention provides an abstract method for automatic planning of dynamic evacuation paths in buildings. It does not require complex automatic image recognition and abstracts the building plan through the connection method, which greatly facilitates the use of fire operation and maintenance personnel, reduces the requirements for computing equipment, and improves the stability of the system.

[0031] 2. The present invention does not require the debugging personnel to compile a large amount of evacuation plan information, and can automatically plan the shortest escape path according to the actual path; in the path calculation process, the device network is formed by connecting lines, and there is no need to parse the plane drawings, which excludes useless information irrelevant to the path, and cleverly converts the plane graphics into graphics of nodes and line segments. Based on the graph theory method, the scene is abstracted into an undirected graph through connecting lines, which can simply and intuitively display the safe exits and various feasible evacuation paths in the scene, simplifying the subsequent path calculation process, and the optimized breadth-first path algorithm has low complexity and low calculation delay, which can achieve near real-time path planning and improve escape efficiency, and the method is suitable for complex scenes;

[0032] 3. In the present invention, when multiple fire alarms occur, the system can mark the sign lamps that were linked to the previous fire alarms, and can effectively judge the sign lamps that have changed direction through the principle of risk avoidance and the principle of first alarm priority, so as to avoid trampling accidents caused by repeated changes of direction and confusion of people flow, and finally generate the best escape route, which can ensure the safe and rapid evacuation of escapees while avoiding all dangerous situations;

[0033] 4. The status of the safety exit is indicated by changing the color of the sign light to improve the escapee's ability to identify. At the same time, the evacuation sign light flashes regularly. On the one hand, it can save electricity. On the other hand, the flashing of the light can further enhance the sensory stimulation of the light to the escapee, so that the escapee can evacuate in the shortest time following the direction indicated by the sign light.

[0034] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0036] Figure 1 This is a flow chart of a method for dynamic planning of evacuation paths in a building provided by an embodiment of the present invention;

[0037] Figure 2 It is a diagram showing the arrangement of emergency sign lamps and fire alarm detectors to corresponding positions provided by an embodiment of the present invention;

[0038] Figure 3 All devices provided by the embodiment of the present invention are connected to form a device network diagram;

[0039] Figure 4 The position coordinates and equipment coding diagram of the emergency sign lamp and the fire alarm detector provided in the embodiment of the present invention;

[0040] Figure 5 is a display diagram of an adjusted evacuation path and evacuation direction provided by an embodiment of the present invention;

[0041] Figure 6 It is an evacuation route display diagram adjusted according to the principle of first-response priority provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] In view of the drawbacks that the emergency lighting and evacuation indication systems mentioned in the background technology mostly use a plan approach or automatically identify building attributes in drawings to identify evacuation paths in the direction of sign lamps in fire mode, this application designs a method and system for dynamically planning evacuation paths with low labor costs, flexible evacuation paths, and high evacuation efficiency, so as to achieve safe, accurate and rapid evacuation of personnel.

[0046] Embodiment 1

[0047] like Figure 1 As shown, this embodiment provides a method for dynamically planning an evacuation path in a building, comprising the following steps:

[0048] Step 1: Obtain the floor plan of the target building;

[0049] In step 1, after obtaining the floor plan of the target building, the emergency sign lamps and fire alarm detectors are arranged at the corresponding positions according to the actual location information in the floor plan, such as Figure 2 As shown;

[0050] Then use the wiring control to connect all emergency sign lamps and fire alarm detector devices into a device network, such as Figure 3 As shown;

[0051] The present invention does not require complex automatic image recognition, and abstracts the building plan through the connection method, which greatly facilitates the use of fire operation and maintenance personnel, reduces the requirements for computing equipment, and improves the stability of the system.

[0052] Step 2: Extract the location coordinates and equipment codes of emergency sign lamps and fire alarm detectors from the floor plan of the target building;

[0053] like Figure 4 Shown are the extracted position coordinates and equipment codes of emergency sign lamps and fire alarm detectors. In the figure, numbers 1, 2, 4, 6, 8, 10, 11, 13, 15, 18, 19, 20, 22, 24 and 26 represent the equipment codes of the corresponding emergency sign lamp positions, numbers 3, 5, 7, 12, 14, 16, 21, 23 and 25 represent the equipment codes of the corresponding fire alarm detector positions, and numbers 1, 9, 19, 27 represent emergency exits.

[0054] Step 3: Get the alarm status of all fire alarm detectors;

[0055] In step 3, when obtaining the status of the fire alarm detector, the fire alarm detector is connected to obtain the alarm status of all fire alarm detectors in the system according to the agreed fire alarm communication protocol, so as to determine the location of the fire point.

[0056] Step 4: Determine the fire point according to the alarm status of the fire alarm detector, take the fire alarm detector corresponding to the fire point as the vertex, take the emergency sign lamp as the node, and automatically calculate the evacuation path;

[0057] In step 4, assuming that the fire alarm detector 3 is the fire starting point, the specific calculation process includes:

[0058] Take the fire alarm detector 3 at the fire point as the vertex, first visit the vertex and mark it as visited, take the emergency sign lamp as the node, then sequentially visit all the adjacent nodes connected to the vertex, and mark the nodes as visited, then repeat the above process with the marked nodes as the vertex, until the shortest safe exit can be found on each line connected to the fire alarm detector 3 at the vertex;

[0059] Finally, three evacuation paths were found. The first one was 3→2→1, the second one was 3→4→6→8→9, and the third one was 3→10→17→20→19.

[0060] Through the above solution, there is no need for debugging personnel to write a large amount of evacuation plan information, and the shortest escape route can be automatically planned according to the actual path.

[0061] Step 5: Identify the indication direction of the emergency sign lamps on the evacuation path, and adjust the identified indication direction according to the planned indication direction;

[0062] Specifically include:

[0063] Step 501: firstly, judging the indication direction of the sign lamps on the three evacuation paths planned in step 4 according to the position coordinates in the plan view;

[0064] The determination method in this embodiment is: according to the coordinates, according to the principle of departing from the ignition point, combined with the position information, the up, down, left, and right directions are identified according to the breadth-first algorithm. For example, the result of the identification is:

[0065] In the first evacuation route 3→2→1, the indication direction of the emergency sign lighting is consistent with the direction of the evacuation route;

[0066] In the second evacuation route 3→4→6→8→9, the direction of the emergency sign lamp 4 is opposite to the direction of the evacuation route, and the directions of the emergency sign lamps 6 and 8 are consistent with the direction of the evacuation route;

[0067] In the third evacuation route 3→10→17→20→19, the directions of the emergency sign lamps 17 and 20 are consistent with the direction of the evacuation route, and the direction of the emergency sign lamp 10 is opposite to the direction of the evacuation route;

[0068] Step 502: adjusting the identified indication direction according to the planned indication direction;

[0069] In this embodiment, the first path does not need to change direction, the second path No. 4 sign light automatically changes from left to right, and the third path No. 10 sign light changes from upward to downward. After identification, the evacuation path and evacuation direction are displayed on the plan. The adjusted plan displays the evacuation path and evacuation direction, such as Figure 5 shown.

[0070] Step 503: Update fire alarm point information in real time;

[0071] When a new fire detector alarms, steps 4 to 502 are repeated. In order to avoid repeated changes in the previously planned indication direction causing people to step on it, the planned path is marked to avoid re-planning when it is not the first calculation.

[0072] like Figure 6As shown in the figure, for example, the three paths planned after the No. 7 detector alarms are: ①7→6→4→2→1. Since this path conflicts with the previously planned path, according to the principle of first alarm priority, all sign lamps on this path maintain their current directions; ②7→8→9, the planned direction of this path is consistent with the previously planned path direction and remains unchanged; ③7→11→18→26→27, the original upward direction of sign lamp 11 on this path is changed to downward.

[0073] Step 6: Automatically control the direction change of emergency sign lighting: According to the direction automatically identified by the plan drawing and the on-site installation position relationship, determine the lighting control instructions and perform control.

[0074] In the process of path calculation, the equipment network is formed by connecting lines. There is no need to parse the plane drawings, which eliminates useless information irrelevant to the path. The plane graphics are cleverly converted into graphics of nodes and line segments. Based on the graph theory method, the scene is abstracted into an undirected graph through connecting lines. The safe exits and various feasible evacuation paths in the scene can be simply and intuitively displayed, simplifying the subsequent path calculation process. The optimized breadth-first path algorithm has low complexity and low calculation delay, which can achieve near real-time path planning and improve escape efficiency. This method is suitable for complex scenarios.

[0075] When multiple fire alarms occur, the system can mark the sign lamps that were linked to the previous fire alarms. Based on the risk avoidance principle and the first alarm priority principle, it can effectively determine the sign lamps that have changed direction, avoid repeated changes in direction, and cause trampling accidents caused by chaotic flow of people, and ultimately generate the best escape route, which can avoid all dangerous situations while ensuring the safe and rapid evacuation of escapees.

[0076] In addition, the status of the emergency exit is indicated by changing the color of the sign light, which improves the escapee's ability to identify. At the same time, the evacuation sign light flashes regularly, which can save electricity on the one hand, and on the other hand, the flashing of the light can further enhance the sensory stimulation of the light to the escapee, so that the escapee can evacuate in the shortest time by following the direction indicated by the sign light.

[0077] Embodiment 2

[0078] This embodiment provides a dynamic planning system for evacuation paths in a building, including an industrial control computer, evacuation path planning software, a fire alarm controller interface module, evacuation sign lamps and a control bus;

[0079] Industrial control computers are used to run evacuation route planning software;

[0080] The evacuation path planning software is used to execute the specific process of the method for dynamic planning of evacuation paths in a building described in Example 1, including plane map import, equipment placement, path planning, direction identification and terminal control;

[0081] The specific implementation process is consistent with the content of Example 1, including:

[0082] A drawing acquisition module is used to acquire a plan drawing of a target building;

[0083] A position code extraction module, which is used to extract the position coordinates and equipment codes of emergency sign lamps and fire alarm detectors in the plan drawings of the target building;

[0084] An alarm status acquisition module, which is used to obtain the alarm status of all fire alarm detectors;

[0085] An evacuation path calculation module is used to determine the fire point according to the alarm status of the fire alarm detector, take the fire alarm detector corresponding to the fire point as the vertex, take the emergency sign lamp as the node, sequentially visit all adjacent nodes connected to the vertex, mark the visited nodes, and then take the marked node as the vertex to traverse all adjacent nodes connected to the marked node until the shortest safe exit can be found on each line connected to the vertex fire alarm detector, thereby obtaining an evacuation path;

[0086] The direction adjustment module is used to identify the indication direction of the emergency sign lamp on the evacuation path, adjust the identified indication direction according to the planned indication direction, and control the emergency sign lamp to change the indication direction based on the adjusted indication direction.

[0087] The fire alarm controller interface module is used to communicate with the fire detection alarm system to obtain the real-time status of the fire point detector;

[0088] Evacuation sign lamps are distributed in the evacuation passage to indicate the current evacuation direction;

[0089] The control bus is used to obtain the real-time direction of the evacuation sign lamps and to control the evacuation sign lamps to update the evacuation direction.

[0090] Embodiment 3

[0091] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the method for dynamically planning an evacuation path in a building as described above are implemented.

[0092] Embodiment 4

[0093] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the method for dynamically planning an evacuation path in a building as described above are implemented.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for dynamic planning of evacuation paths in a building, characterized in that: The steps include: Obtain the plan drawings of the target building, convert the plan drawings into graphs of nodes and line segments, and abstract the scene into an undirected graph by connecting lines based on graph theory methods; Use wiring controls to connect all emergency sign lighting and fire alarm detector devices into a device network; Extract the location coordinates and equipment codes of emergency sign lamps and fire alarm detectors from the floor plan of the target building; Get the alarm status of all fire alarm detectors; The fire point is determined according to the alarm status of the fire alarm detector. The fire alarm detector corresponding to the fire point is taken as the vertex, and the emergency sign lamp is taken as the node. All adjacent nodes connected to the vertex are visited in sequence, and the visited nodes are marked. Then, the marked nodes are taken as the vertex, and all adjacent nodes connected to the marked nodes are traversed until the shortest safe exit can be found on each line connected to the vertex fire alarm detector, and the evacuation path is obtained. Identify the indication direction of the emergency sign lamps on the evacuation path, adjust the identified indication direction according to the planned indication direction, and control the emergency sign lamps to change the indication direction based on the adjusted indication direction; The step of adjusting the identified indication direction according to the planned indication direction includes: if the identified indication direction is consistent with the evacuation path, keeping the indication direction of the original emergency sign lamp unchanged; if the identified indication direction is inconsistent with the evacuation path, changing the indication direction of the original emergency sign lamp to the opposite direction; Get new fire detector alarm information. If it conflicts with the previously planned path, all sign lamps on this path will keep their current direction unchanged according to the principle of first alarm priority.

2. A method for dynamic planning of evacuation paths in a building as claimed in claim 1, characterized in that: When identifying the indication direction of the emergency sign lamps on the evacuation path, the up, down, left and right directions are identified according to the principle of moving away from the fire point and the position coordinate information according to the breadth-first algorithm.

3. A method for dynamic planning of evacuation paths in a building as claimed in claim 1, characterized in that: When obtaining the status of the fire alarm detector, the alarm status of all the fire alarm detectors in the system is obtained according to the agreed fire alarm communication protocol by connecting to the fire alarm detector.

4. A method for dynamically planning an evacuation path in a building as claimed in claim 1, characterized in that: After adjusting the identified indication direction according to the planned indication direction, a control instruction for changing the indication direction of the emergency sign lamp is generated.

5. A dynamic planning system for evacuation routes in a building, characterized in that: A method for dynamically planning an evacuation path in a building as claimed in any one of claims 1 to 4 is adopted, comprising: A drawing acquisition module is used to acquire a plan drawing of a target building; A position code extraction module, which is used to extract the position coordinates and equipment codes of emergency sign lamps and fire alarm detectors in the plan drawings of the target building; An alarm status acquisition module, which is used to obtain the alarm status of all fire alarm detectors; An evacuation path calculation module is used to determine the fire point according to the alarm status of the fire alarm detector, take the fire alarm detector corresponding to the fire point as the vertex, take the emergency sign lamp as the node, sequentially visit all adjacent nodes connected to the vertex, mark the visited nodes, and then take the marked node as the vertex to traverse all adjacent nodes connected to the marked node until the shortest safe exit can be found on each line connected to the vertex fire alarm detector, thereby obtaining an evacuation path; A direction adjustment module, which is used to identify the indication direction of the emergency sign lamp on the evacuation path, adjust the identified indication direction according to the planned indication direction, and control the emergency sign lamp to change the indication direction based on the adjusted indication direction; Get new fire detector alarm information. If it conflicts with the previously planned path, all sign lamps on this path will keep their current direction unchanged according to the principle of first alarm priority.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in a method for dynamically planning an evacuation path in a building as described in any one of claims 1 to 4 are implemented.

7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of a method for dynamically planning an evacuation path in a building as described in any one of claims 1-4 are implemented.

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