Evacuation path generation method and system
By pre-establishing connections between lighting fixtures and fire alarm points, evacuation routes are generated and stored, solving the problems of response delay and low reliability in existing evacuation systems, and achieving rapid and accurate fire evacuation route guidance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ACREL CO LTD
- Filing Date
- 2026-03-20
- Publication Date
- 2026-06-26
AI Technical Summary
Existing evacuation systems struggle to quickly and accurately avoid fire alarm points in the event of a fire, and their reliance on high-performance hardware and real-time computing leads to response delays and reduced reliability.
By pre-establishing directed connections between lighting fixtures and the association between fire alarm points and variable status indicator lights, evacuation routes are generated and stored. In the event of a fire, control commands are issued directly by querying the database, enabling rapid and accurate evacuation route guidance.
Without relying on real-time computing and high-performance hardware, it enables the rapid generation of precise evacuation routes that avoid fire alarm points, improving the safety and response speed of evacuation guidance, and reducing system load and deployment costs.
Smart Images
Figure CN122286889A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of building fire protection technology, and in particular to a method and system for generating an evacuation path. BACKGROUND
[0002] Fire emergency lighting and evacuation indication system is an important part of building fire protection facilities. Its core function is to provide continuous lighting for people in the building and indicate the optimal escape direction when a fire occurs, thereby minimizing casualties and ensuring life safety.
[0003] With the development of intelligent buildings and smart fire protection, traditional evacuation systems only have the "constant light + fixed arrow" function and cannot control the direction of evacuation indicator lights, making it difficult to meet the safety needs in complex scenarios.
[0004] Most of the mainstream products on the market currently have a zoning linkage function, that is, through linkage with the fire automatic alarm system (FAS), when a fire alarm occurs in a fire zone, the direction of all evacuation indicator lights in the region is switched to guide people away from the fire area. However, such systems still have obvious limitations, as they only switch as a whole unit based on fire zones and cannot identify the specific location of the fire alarm, which can easily lead people to the fire area.
[0005] In recent years, some evacuation systems have attempted to introduce real-time sensor data (such as smoke density and temperature) for dynamic path calculation. Although this method has some environmental sensing capabilities, it relies on high-density sensor networks and high-performance computing units, which have high deployment costs, complex systems, and low reliability when communication is interrupted or sensors fail. In addition, real-time path calculation has a response delay, which may miss the best evacuation opportunity in a rapidly spreading fire.
[0006] After searching, Chinese patent publication CN115600295A discloses a method for calculating an evacuation path for a building. By converting lamps and fire alarms into a directed graph data structure, the method uses a breadth-first search and a multi-path competition mechanism to calculate an evacuation path in real time from a safe exit, thereby dynamically generating an evacuation direction based on the location of a fire alarm. However, this method requires real-time calculation when a fire occurs, which has high requirements for processor performance and response speed, and the computational complexity increases with the number of nodes, making it difficult to achieve fast response on low-performance embedded devices. Moreover, this method cannot avoid specific exits associated with fire alarm points in advance, which poses a risk of guiding people to dangerous areas.
[0007] Therefore, it is a technical problem to be solved how to quickly generate an evacuation path that can accurately avoid fire alarm points without relying on real-time calculation and high-performance hardware. SUMMARY
[0008] The present application aims to overcome the defects of the prior art and provides a method and system for generating an evacuation path.
[0009] The object of the present application can be achieved by the following technical solutions: According to a first aspect of the present application, a method for generating an evacuation path is provided, comprising: establishing a directed connection relationship between lamps in a building, the lamps including at least a two-way directional sign lamp and a variable state sign lamp; establishing an association relationship between a fire alarm point and the variable state sign lamp, the variable state sign lamp indicating an exit passable in a normal state and changing into a no-entry sign lamp when the associated fire alarm point alarms; for each fire alarm point, determining a corresponding direction for each two-way directional sign lamp according to the directed connection relationship and the association relationship, so that a path corresponding to the direction is reached from the two-way directional sign lamp to a safe exit or a variable state sign lamp not associated with the fire alarm point; storing the directions of the two-way directional sign lamps corresponding to all fire alarm points in a database; when a fire alarm point alarms, querying and obtaining the directions of the two-way directional sign lamps corresponding to the alarming fire alarm point from the database, and generating a control instruction according to the obtained directions to control the corresponding two-way directional sign lamp to indicate the evacuation direction according to the directions.
[0010] As a preferred technical solution, the establishment of the directed connection relationship between the lamps in the building includes placing the lamps on a building plan and establishing a directed connection between the lamps, and recording the starting lamp, the ending lamp and the connection direction of each directed connection.
[0011] As a preferred technical solution, the establishment rule of the directed connection includes: if the starting lamp is a left directional sign lamp, it can only be connected to the next lamp in the pointing direction along the left direction; if the starting lamp is a right directional sign lamp, it can only be connected to the next lamp in the pointing direction along the right direction; if the starting lamp is a two-way directional sign lamp, it can be connected to the next lamp in the pointing direction along the left direction or the right direction.
[0012] As a preferred technical solution, the establishment of the association relationship between the fire alarm point and the variable state sign lamp includes: pre-recording the associated variable state sign lamp of each fire alarm point in the database, and when the fire alarm point alarms, the associated variable state sign lamp changes into a no-entry sign lamp.
[0013] As a preferred technical solution, the determination of a direction for each two-way directional sign lamp for each fire alarm point specifically includes: Traverse all bidirectional traffic lights. For the current bidirectional traffic light, search for candidate paths from the bidirectional traffic light to the safety exit or variable state traffic light based on the directed connection relationship. If the endpoint of a candidate path is a variable status indicator light associated with the current fire alarm point, then the candidate path is discarded. Select the shortest candidate path from the remaining candidate paths as the path to the current fire alarm point corresponding to the bidirectional sign light, and record the direction of the light in the path. The length of the path is calculated based on the coordinates of the luminaire on the building floor plan.
[0014] As a preferred technical solution, the method further includes: generating a default evacuation path, wherein the default evacuation path is obtained by traversing all bidirectional traffic lights, searching for the shortest path from each bidirectional traffic light to a safety exit or variable state traffic light according to the directed connection relationship, and storing the directions of each bidirectional traffic light in the default evacuation path in a database.
[0015] As a preferred technical solution, the method further includes: establishing lamp groups and dividing the lamps into different groups; when a fire alarm is triggered, filtering the direction of the bidirectional indicator lights corresponding to the alarm fire alarm point from the database according to preset activation rules, wherein the activation rules include all activation, group activation, or page activation; Specifically, the group activation means: querying the group where the lights associated with the fire alarm point are located, and controlling only the lights in that group; the page activation means: controlling only the lights on the same building floor plan as the fire alarm point.
[0016] According to a second aspect of the present invention, a system for implementing the evacuation path generation method is provided, comprising: The relationship establishment module is used to establish directed connection relationships between lighting fixtures within the building and the association relationship between fire alarm points and variable state indicator lights. The variable state indicator lights indicate that the exit is passable under normal conditions, and change to prohibit entry when the associated fire alarm point is alarmed. The path pre-generation module, for each fire alarm point, pre-determines a direction for each bidirectional sign light based on the connection relationship and the association relationship, so that the path corresponding to the direction of the bidirectional sign light leads to the safety exit or a variable state sign light not associated with the fire alarm point. A database is used to store the directions of all bidirectional indicator lights corresponding to all fire alarm points; The fire response module is used to query and obtain the direction of each bidirectional indicator light corresponding to the alarm fire point from the database when a fire alarm is triggered, and to issue control commands according to the obtained directions to control the corresponding bidirectional indicator lights to evacuate in the indicated direction.
[0017] As a preferred technical solution, the relationship establishment module is also used to establish lamp groups and divide the lamps into different groups; the fire response module also filters the direction of the bidirectional indicator lights corresponding to the alarm fire point from the database according to the preset activation rules, the activation rules include all activation, group activation or page activation.
[0018] As a preferred technical solution, the fire response module is also used to query the variable status indicator lights associated with the alarm fire point from the association relationship, and issue an instruction to change them to no entry indicator lights.
[0019] Compared with the prior art, the present invention has the following advantages: 1. This invention establishes directed connections between lighting fixtures and associations between fire alarm points and variable state indicator lights in advance. For each fire alarm point, it generates the optimal direction for all bidirectional indicator lights in advance and stores it in the database. When a fire occurs, it directly queries the database to issue control commands. This achieves rapid generation of evacuation routes without relying on real-time computing and high-performance hardware.
[0020] 2. This invention, by setting variable state indicator lights and their association with fire alarm points, enables the proactive closure of dangerous exits near the fire source during a fire, preventing people from being guided to dangerous areas. At the same time, combined with pre-generated evacuation routes, it achieves dynamic adjustment of the direction of the two-way indicator lights, improving the accuracy and safety of evacuation guidance.
[0021] 3. This invention separates path generation from path execution. All evacuation paths are pre-generated and persistently stored in the database. In the event of a fire, only a query is needed to issue the path, without the need for real-time calculation. This results in a fast response speed, low system load, and the database supports multiple platforms such as Windows, Linux, and Android, providing excellent cross-platform compatibility and deployment flexibility.
[0022] 4. The present invention has a flexible control method, supporting multiple startup rules such as all startup, group startup, and page startup. It can be flexibly selected according to different building structures and application scenarios to achieve precise control and avoid unnecessary interference to other unrelated areas. Attached Figure Description
[0023] Figure 1 This is a flowchart of the method of the present invention; Figure 2 A default evacuation route flowchart is generated for this invention; Figure 3 This invention generates a flowchart of evacuation routes associated with fire alarm points. Figure 4 This invention provides a flowchart for evacuation route control. Figure 5 This is an evacuation route map generated based on a building floor plan in an embodiment of the present invention; Figure 6 This is a schematic diagram of the evacuation path when the default evacuation path is executed in an embodiment of the present invention; Figure 7 This is a schematic diagram of the evacuation routes executed when a fire alarm is triggered according to an embodiment of the present invention. Figure 8 This is a system framework diagram of the present invention. Detailed Implementation
[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0025] Example 1: This invention provides a method for generating evacuation paths, such as... Figure 1 As shown, it includes the following steps: Step S1: Create a grouping table for lighting fixtures.
[0026] Import information on lighting fixtures and fire alarm points, create a grouping table for lighting fixtures, and save the relevant information to the database.
[0027] The lighting fixture information includes: fixture number and fixture model; the fire alarm point information includes: fire alarm point number. In a newly created lighting fixture group, the lighting fixtures are added to the corresponding group. The group information includes: group number and lighting fixture number.
[0028] This step provides a foundation for the subsequent activation of the evacuation plan by group, enabling the control of only the lights in specific groups as needed during a fire, thus avoiding unnecessary impact on the lights in other areas.
[0029] Step S2: Import architectural floor plans and establish connections and relationships.
[0030] Import architectural floor plans to generate floor plan information, including: drawing number, drawing dimensions, and drawing name. Drag and drop the imported lighting fixtures and fire alarm points according to the equipment locations shown on the architectural floor plan to generate coordinate information. The lighting fixture coordinate information includes: lighting fixture number, drawing number, lighting fixture X coordinate, and lighting fixture Y coordinate; the fire alarm point coordinate information includes: fire alarm point number, drawing number, fire alarm point X coordinate, and fire alarm point Y coordinate.
[0031] Based on the location of lighting fixtures in the building floor plan and the route design, a directed connection is established between the lighting fixtures. Lighting fixture types include directional indicator lights, emergency exit indicator lights, and variable-state indicator lights. Directional indicator lights further include left-turn indicator lights, right-turn indicator lights, and bidirectional indicator lights. Variable-state indicator lights function as exit indicator lights under normal operation, allowing personnel to pass; when an associated fire alarm is triggered, the variable-state indicator light switches to emergency mode, becoming a no-entry indicator light, prohibiting personnel from passing.
[0032] Light fixture-to-light fixture connections are directional connections, and there are three connection methods: directional sign light to directional sign light, directional sign light to safety exit sign light, and directional sign light to variable status sign light. The specific connection rules are as follows: When the starting light is a left-turn sign light, it can be connected to a left-turn sign light, a safety exit sign light, or a variable status sign light; When the starting light is a right-turn sign light, it can be connected to a right-turn sign light, a safety exit sign light, or a variable status sign light. When the starting light is a two-way sign light, it can be connected to a two-way sign light, a left-way sign light, a safety exit sign light, or a variable status sign light to the left, or it can be connected to a two-way sign light, a right-way sign light, a safety exit sign light, or a variable status sign light to the right.
[0033] The lamp-to-lamp connection information includes: starting lamp number, ending lamp number, and connection direction (left or right).
[0034] Based on the location of fire alarm points in the building floor plan, the system associates these locations with the directions people should avoid when a fire alarm is triggered, safety exits, and variable-state indicator lights. The fire alarm point-lighting association information includes: fire alarm point number and light fixture number. When a fire alarm is triggered, the associated variable-state indicator light will change to a "No Entry" sign to prevent people from accidentally entering the danger zone.
[0035] Step S3: Pre-generate evacuation routes.
[0036] Iterate through all bidirectional traffic lights, generate default evacuation routes and evacuation routes associated with fire alarm points, and save them to the database. Create an evacuation route table in the database, containing the following attributes: evacuation route number, light fixture number, and light fixture direction. The default evacuation route number is 0, and the evacuation route number associated with a fire alarm point is the fire alarm point number.
[0037] like Figure 2 As shown, the default evacuation route is generated as follows: Each two-way sign light is queried one by one to determine if it is already in the default evacuation route. If the sign light already exists in the route, the query is exited and the next sign light is queried; if the sign light does not exist in the route, the next sign light pointed to by the current sign light is found according to the sign light-sign light connection table, until it points to a safety exit sign light or a variable status sign light. At this point, one or more evacuation routes from the queried sign light to the safety exit sign light or variable status sign light are generated.
[0038] The distance between two lights is calculated based on their coordinates along the path, thus determining the total path length. If multiple evacuation paths are generated, the shortest one is selected as the optimal path; if only one path is generated, it is directly used as the optimal path. All bidirectional marker lights and their directions along the optimal path are added to the evacuation path table, with the default evacuation path number being 0.
[0039] Continue querying the next light fixture until the default evacuation route in the evacuation route table includes all the two-way sign lights and their directions, forming the complete default evacuation route for the entire system.
[0040] like Figure 3 As shown, the generation of evacuation routes associated with fire alarm points specifically includes: For each fire alarm point, each two-way indicator light is queried one by one to determine if the light is already in the evacuation route associated with that fire alarm point. If the light already exists in the route, the query is exited and the next light is queried; if the light does not exist in the route, the next light it points to is found according to the light-light connection table, until it points to a safety exit indicator light or a variable status indicator light. If the destination of the searched route is a safety exit indicator light or a variable status indicator light, but that safety exit indicator light or variable status indicator light is associated with the fire alarm point, then this evacuation route is discarded because the exit is closed and passage is prohibited.
[0041] At this point, one or more evacuation routes are generated from the queried light fixture to the safety exit sign or non-associated variable status sign. The distance between two light fixtures in the route is calculated based on their coordinates, thus determining the length of the entire route. If multiple evacuation routes are generated, the shortest length is selected as the optimal route; if only one route is generated, it is directly used as the optimal route. All bidirectional signs and their directions in the optimal route are added to the evacuation route table, and the evacuation route number is set to the fire alarm point number.
[0042] Continue querying the next light fixture until the evacuation route table contains all the bidirectional signs and their directions, forming the complete evacuation route for the system when the fire alarm occurs.
[0043] Step S4: Fire response and command issuance.
[0044] When a fire alarm is triggered, the system queries the database for the evacuation routes associated with the alarm point and the preset activation rules, and sends the route-related control commands to the corresponding lighting fixtures.
[0045] like Figure 4 As shown, the startup rules include the following three types: Activate all: Query the lights associated with the fire alarm points in the evacuation route table, and issue corresponding direction-changing commands based on the lights' directions in the evacuation route table; query the variable status signs associated with the fire alarm points in the fire alarm point-lights association table, and issue commands to change them to "No Entry" signs.
[0046] Group Activation: Based on the fire alarm point-light fixture association table and the light fixture grouping table, query the group number corresponding to the alarm fire alarm point, i.e., query the group containing the light fixtures associated with that alarm fire alarm point. In the evacuation route table, query the light fixtures associated with the alarm fire alarm point to determine if the light fixture exists in the group; if not, discard it; for the remaining light fixtures, issue corresponding direction-changing commands based on the light fixture directions in the evacuation route table. In the fire alarm point-light fixture association table, query the variable state indicator lights associated with the alarm fire alarm point to determine if the light fixture exists in the group; if not, discard it; for the remaining light fixtures, issue commands to change them to "No Entry" signs.
[0047] Initiate by page: Based on the fire alarm point information table, query the drawing number (page number) of the fire alarm point. In the evacuation route table, query the lights associated with the fire alarm point, checking if the light is on this page; if not, discard it; for the remaining lights, issue corresponding direction-changing commands based on the light locations in the evacuation route table. In the fire alarm point-light fixture association table, query the variable status indicator lights associated with the fire alarm point, checking if the light is on this page; if not, discard it; for the remaining lights, issue commands to change them to "No Entry" signs.
[0048] The method of this invention completes the complex path calculation work in advance, and only needs to query the database during a fire, which realizes rapid response. It does not rely on real-time calculation and high-performance hardware, has high reliability, and can accurately avoid fire alarm points to guide people to escape, thus improving evacuation efficiency and safety.
[0049] The following uses a specific building plan as an example to illustrate the implementation process of this invention: like Figure 5 As shown, this is a basic layout diagram of evacuation routes generated based on the building floor plan. The diagram includes two-way sign lights, safety exit sign lights, and variable status sign lights. The arrows in the diagram indicate the direction of the light fixture connections established according to the directional connection rules in step S2, which provides the physical layout and connection logic basis for the subsequent generation of default evacuation routes and fire alarm point associated evacuation routes.
[0050] likeFigure 6 The diagram shown illustrates the evacuation routes when the building's floor plan follows the default evacuation path. When no fire alarm is triggered, all bidirectional indicator lights within the building will point to the nearest safe exit indicator light according to the shortest path rule in step S3. All variable-state indicator lights will be in normal working mode, functioning as exit indicators, allowing normal passage for personnel and achieving nearby emergency evacuation guidance in the absence of a fire alarm.
[0051] like Figure 7 The diagram illustrates the execution of evacuation routes associated with a fire alarm point on the building's floor plan. After a fire alarm is triggered, the variable-state indicator lights associated with that fire alarm point are switched to "No Entry" signs according to the rules in step S4, prohibiting personnel from passing through. Simultaneously, all bidirectional indicator lights within the building abandon the original default paths leading to the fire alarm point and associated variable-state indicator lights, and instead point to the safety exit indicator lights furthest from the alarmed fire alarm point according to the optimal fire alarm path generated in step S3. This achieves precise fire avoidance evacuation guidance in fire alarm scenarios, preventing personnel from being led to dangerous areas.
[0052] Example 2: This invention provides an evacuation route generation system for implementing the evacuation route generation method. For example... Figure 8 As shown, the system includes: Relationship Establishment Module 1: The relationship establishment module is used to establish directed connections between lighting fixtures within a building, as well as the association between fire alarm points and variable status indicator lights. Specifically, the relationship establishment module includes: Drawing Import Unit: Used to import architectural floor plans and generate drawing information, including drawing number, drawing size, and drawing name.
[0053] Equipment Layout Unit: Used to drag and drop lighting fixtures and fire alarm points onto the drawings, generating coordinate information. Lighting fixture coordinate information includes fixture number, drawing number, fixture X coordinate, and fixture Y coordinate; fire alarm point coordinate information includes fire alarm point number, drawing number, fire alarm point X coordinate, and fire alarm point Y coordinate.
[0054] Lighting Fixture Connection Unit: Used to establish directed connections between lighting fixtures and generate a lighting fixture-lighting fixture connection table. The connection table records the starting lighting fixture number, the ending lighting fixture number, and the connection direction (left or right). The connection rules are as follows: a left-direction sign light can only be connected to the next lighting fixture in its direction of direction; a right-direction sign light can only be connected to the next lighting fixture in its direction of direction; a bidirectional sign light can be connected to the next lighting fixture in its direction of direction, either left or right.
[0055] Fire Alarm Association Unit: Used to establish the association between fire alarm points and variable status indicator lights, generating a fire alarm point-light association table. The association table records the variable status indicator lights associated with each fire alarm point. When a fire alarm is triggered at that point, the associated variable status indicator light changes to a "No Entry" sign.
[0056] The relationship establishment module is also used to create lighting fixture groups, dividing lighting fixtures into different groups and recording the lighting fixtures contained in each group. The lighting fixture grouping information includes the group number and the lighting fixture number.
[0057] Path pre-generation module 2: The path pre-generation module is used to pre-determine a direction corresponding to each fire alarm point for each bidirectional sign light based on the directed connection relationship and association relationship, so that the path corresponding to the direction of the bidirectional sign light can lead to the safety exit or a variable state sign light not associated with the fire alarm point.
[0058] The path pre-generation module includes: Default Path Generation Unit: This unit iterates through all bidirectional traffic lights, searches for the shortest path from each bidirectional traffic light to a safety exit or variable-state traffic light based on directed connections, and generates a default evacuation path. The directions of each bidirectional traffic light in the default evacuation path are stored in the database, with the path number 0.
[0059] Fire Alarm Path Generation Unit: For each fire alarm point, it iterates through all bidirectional warning lights. For the current bidirectional warning light, it searches for candidate paths from the light to a safety exit or a variable-state warning light based on directed connections. If the endpoint of a candidate path is a variable-state warning light associated with the fire alarm point, the candidate path is discarded. The shortest candidate path is selected from the remaining candidate paths as the path for the current fire alarm point corresponding to the bidirectional warning light, and the direction of the light on that path is recorded. The path length is calculated based on the coordinates of the light fixture on the building floor plan.
[0060] Path storage unit: Used to store the generated default evacuation routes and the evacuation routes associated with each fire alarm point to the database.
[0061] Database 3: The database stores the directions of all bidirectional indicator lights corresponding to all fire alarm points, as well as the directions of all bidirectional indicator lights in the default evacuation routes. The evacuation route table in the database contains: evacuation route number, indicator light number, and indicator light direction. The default evacuation route number is 0, and the evacuation route number associated with a fire alarm point is the corresponding fire alarm point number.
[0062] The database also stores basic data such as lighting fixture grouping tables, lighting fixture-lighting fixture connection tables, and fire alarm point-lighting fixture association tables.
[0063] Fire Response Module 4: The fire response module is used to query the database and retrieve the directions of all bidirectional indicator lights corresponding to a fire alarm point when such an alarm is triggered. Based on the retrieved directions, it generates a direction-changing command to control the corresponding bidirectional indicator lights to indicate the evacuation direction. The fire response module includes: Rule Determination Unit: Used to determine the range of controlled luminaires based on preset activation rules. Activation rules include activating all, activating in groups, or activating by page.
[0064] All lights activated: Controls all lights associated with the fire alarm point; Group activation: Query the group containing the lights associated with the alarm fire point, and control only the lights in that group; Press the page to activate: Only control the lights that are on the same building floor plan as the fire alarm point.
[0065] Path query unit: Used to filter the direction of the bidirectional indicator lights corresponding to the alarm fire point from the database according to the determined activation rules.
[0066] Command generation unit: Used to generate direction change commands based on query results and send them to the corresponding bidirectional indicator lights to control them to evacuate in the preset direction.
[0067] Variable light control unit: used to query the variable status indicator lights associated with the fire alarm point from the fire alarm point-lighting association table, and issue instructions to change them to "No Entry" indicator lights.
[0068] System workflow: Initialization Phase: The relationship establishment module imports architectural floor plans, arranges lighting fixtures and fire alarm points, establishes directed connections and fire alarm point associations, and categorizes lighting fixtures into different groups. All basic data is stored in the database.
[0069] Pre-generation phase: The path pre-generation module iterates through all bidirectional traffic lights, first generating and storing default evacuation routes; then, for each fire alarm point, it generates the corresponding evacuation route and stores it in the database. The path number is the fire alarm point number.
[0070] Fire response phase: When a fire alarm is triggered, the fire response module determines the controlled area according to the preset activation rules, queries the database for the direction of each bidirectional indicator light corresponding to the alarm fire alarm, generates a direction change command and sends it to the corresponding light fixture, and at the same time switches the variable state indicator light associated with the fire alarm to the no-entry mode.
[0071] The system of this invention separates calculation and execution, ensuring the accuracy and speed of evacuation guidance. It has good cross-platform compatibility and deployment flexibility, and can adapt to the evacuation needs of buildings of different sizes. While reducing hardware costs, it effectively improves the stability and emergency response capabilities of the system.
[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A method for generating evacuation routes, characterized in that, include: Establish a directed connection between lighting fixtures within the building, wherein the lighting fixtures include at least two-way indicator lights with adjustable indication direction and variable state indicator lights; Establish a connection between the fire alarm point and the variable state indicator light. Under normal conditions, the variable state indicator light indicates that the exit is passable, and when the associated fire alarm point is alarmed, it changes to a no-entry indicator light. For each fire alarm point, based on the directed connection relationship and the association relationship, a direction corresponding to the fire alarm point is pre-determined for each bidirectional sign light, so that the path from the bidirectional sign light along the direction corresponding to the direction leads to the safety exit or a variable state sign light not associated with the fire alarm point. Store the directions of all two-way indicator lights corresponding to all fire alarm points in the database; When a fire alarm is triggered, the system queries the database to retrieve the direction of each bidirectional indicator light corresponding to the alarm fire alarm point, and generates a control command based on the retrieved direction to control the corresponding bidirectional indicator light to evacuate in the indicated direction.
2. The evacuation path generation method according to claim 1, characterized in that, The process of establishing directed connections between lighting fixtures within a building includes: placing lighting fixtures on a building floor plan and establishing directed connections between them, and recording the starting lighting fixture, ending lighting fixture, and connection direction for each directed connection.
3. The evacuation path generation method according to claim 2, characterized in that, The rules for establishing directed connections include: if the starting light is a left-facing sign light, it can only be connected to the next light in its direction of direction along the left; if the starting light is a right-facing sign light, it can only be connected to the next light in its direction of direction along the right; if the starting light is a two-way sign light, it can be connected to the next light in its direction of direction along either the left or the right.
4. The evacuation path generation method according to claim 1, characterized in that, Establishing the association between the fire alarm points and the variable status indicator lights includes: pre-recording the variable status indicator lights associated with each fire alarm point in the database; when the fire alarm point is triggered, the associated variable status indicator light changes to a "No Entry" sign.
5. The evacuation path generation method according to claim 1, characterized in that, The method of pre-determining a direction for each bidirectional warning light for each fire alarm point specifically includes: Traverse all bidirectional traffic lights. For the current bidirectional traffic light, search for candidate paths from the bidirectional traffic light to the safety exit or variable state traffic light based on the directed connection relationship. If the endpoint of a candidate path is a variable status indicator light associated with the current fire alarm point, then the candidate path is discarded. Select the shortest candidate path from the remaining candidate paths as the path to the current fire alarm point corresponding to the bidirectional sign light, and record the direction of the light in the path. The length of the path is calculated based on the coordinates of the luminaire on the building floor plan.
6. The evacuation path generation method according to claim 1, characterized in that, The method further includes: generating a default evacuation path, wherein the default evacuation path is obtained by traversing all bidirectional traffic lights, searching for the shortest path from each bidirectional traffic light to a safety exit or variable state traffic light according to the directed connection relationship, and storing the directions of each bidirectional traffic light in the default evacuation path in a database.
7. The evacuation path generation method according to claim 1, characterized in that, The method further includes: establishing lamp groups and dividing the lamps into different groups; when a fire alarm is triggered, filtering the direction of the bidirectional indicator lights corresponding to the alarm fire alarm from the database according to preset activation rules, the activation rules including all activation, group activation, or page activation; Specifically, the group activation means: querying the group where the lights associated with the fire alarm point are located, and controlling only the lights in that group; the page activation means: controlling only the lights on the same building floor plan as the fire alarm point.
8. A system for implementing the evacuation path generation method as described in any one of claims 1-7, characterized in that, include: The relationship establishment module is used to establish directed connection relationships between lighting fixtures within the building and the association relationship between fire alarm points and variable state indicator lights. The variable state indicator lights indicate that the exit is passable under normal conditions, and change to prohibit entry when the associated fire alarm point is alarmed. The path pre-generation module, for each fire alarm point, pre-determines a direction for each bidirectional sign light based on the connection relationship and the association relationship, so that the path corresponding to the direction of the bidirectional sign light leads to the safety exit or a variable state sign light not associated with the fire alarm point. A database is used to store the directions of all bidirectional indicator lights corresponding to all fire alarm points; The fire response module is used to query and obtain the direction of each bidirectional indicator light corresponding to the alarm fire point from the database when a fire alarm is triggered, and to issue control commands according to the obtained directions to control the corresponding bidirectional indicator lights to evacuate in the indicated direction.
9. The system according to claim 8, characterized in that, The relationship establishment module is also used to establish lamp groups and divide lamps into different groups; the fire response module also filters the direction of the bidirectional indicator lights corresponding to the alarm fire point from the database according to the preset activation rules, the activation rules include all activation, group activation or page activation.
10. The system according to claim 8, characterized in that, The fire response module is also used to query the variable status indicator lights associated with the fire alarm point from the association relationship, and issue an instruction to change them to "No Entry" indicator lights.