CN115171321A - Intelligent fire fighting management system and method based on BIM - Google Patents
Intelligent fire fighting management system and method based on BIM Download PDFInfo
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- G—PHYSICS
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- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
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- G—PHYSICS
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Abstract
The invention relates to an intelligent fire-fighting management system based on BIM, comprising: a space construction module; a video monitoring module; the picture processing module is used for analyzing the picture frame to obtain picture information; the coordinate statistical analysis module is used for obtaining the number N of the personnel corresponding to the access target coordinate P; the fire detection module is used for monitoring the fire condition at the position of the detection node in real time; the disaster analysis module is used for analyzing the fire at the position of the detection node to obtain a fire influence range coordinate; a route analysis module for calculating the safety coefficient s of the linear coordinate of the escape passage i Sorting from big to small; and the evacuation indication module is used for indicating the evacuation of people. The invention also discloses a BIM-based methodA fire-fighting management method of an intelligent fire-fighting management system. The invention has the advantages of no need of manual participation in the whole process, strong intellectualization and wide application, and is suitable for the fields of intelligent transportation, environmental protection, public safety, safe home, intelligent fire protection, industrial monitoring and the like.
Description
Technical Field
The invention relates to the technical field of intelligent fire fighting, in particular to an intelligent fire fighting management system and method based on BIM.
Background
In the prior art, although there are fire prevention and control systems, such as building automation intelligent systems based on smoke detectors and nozzles, an indoor fire fighting system refers to a facility system installed indoors for extinguishing an initial fire occurring in a building. The fire extinguishing system mainly comprises an indoor fire hydrant system, an automatic water spraying fire extinguishing system, a water mist fire extinguishing system, a foam fire extinguishing system, a carbon dioxide fire extinguishing system, a haloalkane fire extinguishing system, a dry powder fire extinguishing system and the like. The installation of an indoor fire protection system is an effective and necessary safety measure, as evidenced by fire statistics. However, the traditional fire fighting device is basically based on artificial control and lacks intelligence.
The BIM technology and the Internet of things solve the problem of artificial control, have wide application, and spread to multiple fields of intelligent transportation, environmental protection, government work, public safety, safe home, intelligent fire fighting, industrial monitoring, environmental monitoring, street lamp lighting management and control, landscape lighting management and control, building lighting management and control, square lighting management and control, old people nursing, personal health, flower cultivation, water system monitoring, food tracing, enemy investigation, information collection and the like.
The existing fire-fighting system has weak monitoring capability and insufficient conveying capability.
Disclosure of Invention
The invention mainly aims to provide the BIM-based intelligent fire fighting management system which does not need manual control, has stronger intelligence and wide application.
In order to achieve the purpose, the invention adopts the following technical scheme: an intelligent fire management system based on BIM, includes:
the space construction module is used for constructing a space coordinate system, and placing the monitoring area model constructed through the BIM into the space coordinate system to obtain a shunting node, a channel and an access destination coordinate P;
the video monitoring module is arranged at an inlet of the monitoring area and used for acquiring a person video entering the monitoring area and intercepting the person video to obtain a picture frame;
the picture processing module is used for analyzing the picture frame to obtain picture information and obtaining an access destination coordinate P through the picture information;
the coordinate statistical analysis module is used for carrying out statistics on the same access target coordinate P in real time to obtain the number N of personnel corresponding to the access target coordinate P, wherein the number N of the personnel is obtained by subtracting outgoing personnel from incoming personnel, and the access target coordinate P-the number N of the personnel are implanted into a space coordinate system;
the fire detection module is arranged at the position of the detection node and used for monitoring the fire condition at the position of the detection node in real time;
the disaster analysis module is used for analyzing the fire at the position of the detection node to obtain a fire influence range coordinate, namely an escape blocking node coordinate;
a route analysis module for receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of the escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating safety coefficient s of each escape passage line coordinate i Safety coefficient s to escape passage line coordinate i Sorting from big to small; coordinate distance L of escape blocking node i The vertical distance between the escape blocking node coordinate and the escape passage line coordinate is taken as the vertical distance;
and the evacuation indication module is arranged on the shunting node and used for indicating the evacuation of people.
The picture processing module comprises:
the information comparison module searches a preset picture information-personnel information table through the picture information for comparison, judges whether the picture information-personnel information table belongs to the picture information-personnel information table, judges that the picture information-personnel information table belongs to an internal editing personnel if the picture information-personnel information table belongs to the picture information-personnel information table, and judges that the picture information-personnel information table belongs to an external editing personnel if the picture information-personnel information table belongs to the external editing personnel if the picture information-personnel information table does not belong to the internal editing personnel;
the target acquisition module searches a picture information-personnel information table through the picture information to obtain an access target coordinate P when the target acquisition module judges that the personnel are edited; and when the person is judged to be an outsider, alarming and reminding security personnel to inquire.
The detection node positions are places, where disasters easily occur, of the roof of a house, the roof of a corridor and the roof of a room, and the detection module adopts a smoke sensor, a temperature sensor and an infrared sensor.
The evacuation indication module adopts a sign and an indication screen to carry out three-dimensional display on the monitoring area model.
The purpose acquisition module comprises:
the voice interaction terminal is used for outputting voice to inquire the registration problem of the personnel outside the editor, acquiring reply voice and converting the reply voice into text information when the personnel outside the editor is judged to be the personnel outside the editor;
and the information searching module extracts keywords from the text information to obtain an access purpose, searches a preset purpose-registration information recording table according to the purpose to obtain registration information, judges whether the text information is matched with the registration information, obtains an access purpose coordinate P from the registration information and releases the access purpose coordinate P if the judgment result is positive, and otherwise, sends an inquiry signal and performs personnel inquiry registration after receiving the inquiry signal.
Another object of the present invention is to provide a fire protection management method of a BIM-based intelligent fire protection management system, the method comprising the following sequential steps:
(1) Constructing a space coordinate system;
(2) Acquiring a person video entering a monitoring area, and intercepting the person video to obtain a picture frame;
(3) Analyzing the picture frame to obtain picture information, and obtaining an access target coordinate P through the picture information;
(4) Counting the same access target coordinate P in real time to obtain the number N of people corresponding to the access target coordinate P;
(5) Monitoring the fire condition at the position of the detection node in real time;
(6) Analyzing the fire at the position of the detection node to obtain a fire influence range coordinate, namely an escape blocking node coordinate;
(7) Receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of an escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating safety coefficient s of each escape passage line coordinate i Coordinate distance L of escape blocking node i The vertical distance between the escape blocking node coordinate and the escape passage line coordinate is taken as the vertical distance;
(8) To the safety factor s i And indicating the maximum escape passage line coordinate.
In step (6)The calculation method of the fire condition influence range coordinate comprises the following steps: temperature T detected by fire detection module is judged i If the temperature is higher than a preset set temperature T', acquiring position coordinates corresponding to the detection nodes, and connecting the coordinates in sequence to form a closed space; the closed space is a planar circular structure or a spherical or flat three-dimensional structure, and is formed by connecting the coordinates of the nodes in pairs and calculating the length LC of each line segment ij Wherein i and j are node position coordinate numbers, and i is not equal to j, and min { LC (LC) is obtained by calculation ij And will min { LC } ij Sequentially connecting to obtain a closed space;
calculating the radiation distance:
wherein t is the human body tolerance temperature, and lambda is the thermal radiation loss coefficient; calculating to obtain the coordinates of the intersection point of the channel coordinates and the closed space, and extending along the channel coordinates to the center of the closed space in the opposite direction, wherein the extending amount is the radiation distance d, so as to obtain the coordinates of the escape blocking node; the coordinates of the escape blocking nodes are the coordinates of the fire influence range.
In step (7), said safety factor s i The calculation formula of (c) is:
wherein L is i And (4) for escaping, blocking the coordinate distance of the node, wherein a is a fire spreading factor and S is an escaping stroke.
According to the technical scheme, the beneficial effects of the invention are as follows: the invention acquires personnel videos entering a monitoring area by constructing a space coordinate system, intercepts the personnel videos to obtain picture frames, analyzes the picture frames to obtain picture information, acquires an access target coordinate P through the picture information, and counts the same access target coordinate P in real timeAcquiring the number N of personnel corresponding to the access target coordinate P, monitoring the fire at the position of the detection node in real time, analyzing the fire at the position of the detection node, and acquiring a fire influence range coordinate and an escape blocking node coordinate; receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of an escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating the safety coefficient s of each escape passage line coordinate i To a safety factor s i The maximum escape passage line coordinate is indicated, the whole process does not need manual participation, the intelligentization is strong, the application is wide, and the method is applied to the fields of intelligent transportation, environmental protection, government work, public safety, safe home, intelligent fire fighting, industrial monitoring and the like.
Drawings
FIG. 1 is a block diagram of the circuit configuration of the present system;
FIG. 2 is a block diagram of the circuit structure of the image processing module in FIG. 1;
fig. 3 is a flow chart of the method.
Detailed Description
As shown in fig. 1, an intelligent fire-fighting management system based on BIM includes:
the space construction module is used for constructing a space coordinate system, and placing the monitoring area model constructed through the BIM into the space coordinate system to obtain a shunting node, a channel and an access destination coordinate P; the monitoring area comprises an open area, a building and the environment inside the building, and each access destination coordinate P, a shunting node and a channel are implanted into a space coordinate system, such as the coordinates of each building, the address coordinates of each owner in the building and the like.
The video monitoring module is arranged at an entrance of a monitoring area and used for acquiring a person video entering the monitoring area and intercepting the person video to obtain a picture frame; the video monitoring module adopts a camera.
The picture processing module is used for analyzing the picture frame to obtain picture information and obtaining an access destination coordinate P through the picture information;
the coordinate statistical analysis module is used for carrying out statistics on the same access target coordinate P in real time to obtain the number N of personnel corresponding to the access target coordinate P, wherein the number N of the personnel is obtained by subtracting outgoing personnel from incoming personnel, and the access target coordinate P-the number N of the personnel are implanted into a space coordinate system; for example, if the number of people going to the 1809 room is 18, wherein the people go 21 to work, the people go 3 midway, and the rest 18 people, the coordinate position of the 1809 room in the office building space coordinate system is calibrated to be 18;
the fire detection module is arranged at the position of the detection node and used for monitoring the fire condition at the position of the detection node in real time;
the disaster analysis module is used for analyzing the fire at the position of the detection node to obtain a fire influence range coordinate, namely an escape blocking node coordinate;
a route analysis module for receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of the escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating safety coefficient s of each escape passage line coordinate i Safety coefficient s to escape route line coordinate i Sorting from big to small; coordinate distance L of escape blocking node i The vertical distance between the escape blocking node coordinate and the escape passage line coordinate is determined;
and the evacuation indication module is arranged on the shunting node and used for indicating the evacuation of people.
As shown in fig. 2, the picture processing module includes:
the information comparison module searches a preset picture information-personnel information table through the picture information for comparison, judges whether the picture information-personnel information table belongs to the picture information-personnel information table, judges that the picture information-personnel information table belongs to an internal editing personnel if the picture information-personnel information table belongs to the picture information-personnel information table, and judges that the picture information-personnel information table belongs to an external editing personnel if the picture information-personnel information table does not belong to the internal editing personnel;
the target acquisition module searches a picture information-personnel information table through the picture information to obtain an access target coordinate P when the target acquisition module judges that the personnel are edited; and when the person is judged to be an outsider, alarming and reminding security personnel to inquire.
For example, when the company goes to a company in work, the company passes through a gate on a 24-floor office building, the video monitoring module acquires a face picture frame of the company's business, the picture processing module processes the face picture frame of the company's business to acquire picture information, and the picture information-personnel information table can be a list of the company's business including the picture information, name, age, home address, work unit, work address (e.g., number 1809 of the building), and the like of the company's business. The obtained LiIV is the building personnel, namely the building personnel, and the visit destination coordinate P is a room number 1809.
The detection node positions are places where disasters easily occur on the roof of a house, the roof of a corridor and the roof of a room, and the detection module adopts a smoke sensor, a temperature sensor and an infrared sensor.
And the evacuation indication module adopts a sign and an indication screen to carry out three-dimensional display on the monitored area model. The three-dimensional display is used for displaying the optimal escape passage in the monitoring area model, the escape route can be better displayed through the three-dimensional display, the indicating capability is strong, and the escape route is clear at a glance.
The purpose acquisition module comprises:
the voice interaction terminal is used for outputting voice to inquire registration questions of the personnel outside the editor, acquiring reply voice and converting the reply voice into text information when the personnel outside the editor is judged to be the personnel outside the editor;
and the information searching module extracts keywords from the text information to obtain an access purpose, searches a preset purpose-registration information recording table according to the purpose to obtain registration information, judges whether the text information is matched with the registration information, obtains an access purpose coordinate P from the registration information and releases the access purpose coordinate P if the judgment result is positive, and otherwise, sends an inquiry signal and performs personnel inquiry registration after receiving the inquiry signal.
For example, when a foreign person opens three and passes through the gate, the video monitoring module acquires the picture frame of the face of the person, processes the picture frame to acquire picture information, and judges the picture information as a foreign person. The voice interaction terminal inquires about the name, age, visiting house number, affair, destination person name and the like of the outside person, the visiting purpose is a house number, and a preset house number-registration information recording list is searched through the house number to obtain registration information. The registration information is the name, occupation, etc. of the owner, and judges whether the name of the target person is the same as that of the owner, if the name is judged to be different, the security personnel makes manual inquiry, the inquiry can be input into the access purpose after passing, and the access purpose can be input by voice.
As shown in fig. 3, the method comprises the following sequence of steps:
(1) Constructing a space coordinate system;
(2) Acquiring a person video entering a monitoring area, and intercepting the person video to obtain a picture frame;
(3) Analyzing the picture frame to obtain picture information, and obtaining an access target coordinate P through the picture information;
(4) Counting the same access target coordinate P in real time to obtain the number N of people corresponding to the access target coordinate P;
(5) Monitoring the fire condition at the position of the detection node in real time;
(6) Analyzing the fire at the position of the detection node to obtain a fire influence range coordinate and an escape blocking node coordinate;
(7) Receiving the coordinates of the escape blocking nodes and the coordinates of the shunting nodes, connecting the coordinates of the shunting nodes to obtain the coordinates of escape channel lines, and obtaining the distance L according to the coordinates of the escape blocking nodes i Calculating safety coefficient s of each escape passage line coordinate i Coordinate distance L of escape blocking node i The vertical distance between the escape blocking node coordinate and the escape passage line coordinate is determined;
(8) For safety factor s i And indicating the maximum escape passage line coordinate.
In the step (6), the method for calculating the coordinates of the fire influence range comprises the following steps: temperature T detected by fire detection module is judged i If the temperature is higher than a preset set temperature T', acquiring position coordinates corresponding to the detection nodes, and connecting the coordinates in sequence to form a closed space; the closed space is a planar circular structure or a spherical or flat three-dimensional structure, and the forming method of the closed space comprises the following stepsConnecting the coordinates of the node positions pairwise, and calculating to obtain the length LC of each line segment ij Wherein i and j are node position coordinate numbers, and i is not equal to j, and min { LC (LC) is obtained by calculation ij And will min { LC } ij Connecting in sequence to obtain a closed space;
calculating the radiation distance:
wherein t is the human body tolerance temperature, and lambda is the thermal radiation loss coefficient; calculating to obtain the coordinates of the intersection point of the channel coordinates and the closed space, and extending along the channel coordinates to the center of the closed space in the opposite direction, wherein the extending amount is the radiation distance d, so as to obtain the coordinates of the escape blocking node; the coordinates of the escape blocking nodes are the coordinates of the fire influence range. Here, the channel coordinates refer to coordinates of a channel obtained by the space construction module.
In step (7), said safety factor s i The calculation formula of (c) is:
wherein L is i For the escape blocking node coordinate distance, a is a fire spread factor which can be obtained through experience, the main influences are smoke concentration, fire spread speed and the like, and S is an escape stroke.
The path analysis module calculates an access target coordinate P and a safety coefficient s by accessing the target coordinate P and the number N of the personnel i The travel distance T between the line coordinates of the escape passage i And calculating to obtain the channel arrival time
Wherein v is the average escape speed, b is the adjustment coefficient, and for t i ±t 0 The evacuees count to obtain the escape flow Q, wherein t 0 Is a predetermined time error. Judging whether the escape flow Q is more than one preset Q ', Q'The width of the channel can be determined, and if the judgment result is yes, the evacuation indicating module is used for determining the safety coefficient s i Otherwise, the evacuation indicating module carries out safety coefficient s on the access destination coordinate P exceeding Q i+1 Is indicated by the coordinates of the escape passage line.
Claims (8)
1. The utility model provides an intelligent fire control management system based on BIM which characterized in that: the method comprises the following steps:
the space construction module is used for constructing a space coordinate system, and placing the monitoring area model constructed through the BIM into the space coordinate system to obtain a shunting node, a channel and an access destination coordinate P;
the video monitoring module is arranged at an inlet of the monitoring area and used for acquiring a person video entering the monitoring area and intercepting the person video to obtain a picture frame;
the picture processing module is used for analyzing the picture frame to obtain picture information and obtaining an access destination coordinate P through the picture information;
the coordinate statistical analysis module is used for carrying out statistics on the same access target coordinate P in real time to obtain the number N of personnel corresponding to the access target coordinate P, wherein the number N of the personnel is obtained by subtracting outgoing personnel from incoming personnel, and the access target coordinate P-the number N of the personnel are implanted into a space coordinate system;
the fire detection module is arranged at the position of the detection node and used for monitoring the fire condition at the position of the detection node in real time;
the disaster analysis module is used for analyzing the fire at the position of the detection node to obtain a fire influence range coordinate, namely an escape blocking node coordinate;
a route analysis module for receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of the escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating the safety coefficient s of each escape passage line coordinate i Safety coefficient s to escape route line coordinate i Sorting from big to small; escape blocking node coordinate distance L i Blocking node coordinates and escape passage line seat for escapeThe vertical distance between the targets;
and the evacuation indication module is arranged on the shunting node and used for indicating the evacuation of people.
2. The intelligent BIM-based fire management system of claim 1, wherein: the picture processing module comprises:
the information comparison module searches a preset picture information-personnel information table through the picture information for comparison, judges whether the picture information-personnel information table belongs to the picture information-personnel information table, judges that the picture information-personnel information table belongs to an internal editing personnel if the picture information-personnel information table belongs to the picture information-personnel information table, and judges that the picture information-personnel information table belongs to an external editing personnel if the picture information-personnel information table belongs to the external editing personnel if the picture information-personnel information table does not belong to the internal editing personnel;
the target acquisition module searches a picture information-personnel information table through the picture information to obtain an access target coordinate P when the target acquisition module judges that the personnel are edited; and when the person is judged to be an outsider, alarming and reminding security personnel to inquire.
3. The intelligent BIM-based fire management system of claim 1, wherein: the detection node positions are places where disasters easily occur on the roof of a house, the roof of a corridor and the roof of a room, and the detection module adopts a smoke sensor, a temperature sensor and an infrared sensor.
4. The intelligent BIM-based fire management system of claim 1, wherein: the evacuation indication module adopts a sign and an indication screen to carry out three-dimensional display on the monitoring area model.
5. The intelligent BIM-based fire management system of claim 2, wherein: the purpose acquisition module comprises:
the voice interaction terminal is used for outputting voice to inquire registration questions of the personnel outside the editor, acquiring reply voice and converting the reply voice into text information when the personnel outside the editor is judged to be the personnel outside the editor;
and the information searching module extracts keywords from the text information to obtain an access purpose, searches a preset purpose-registration information recording table through the purpose to obtain registration information, judges whether the text information is matched with the registration information, obtains an access purpose coordinate P from the registration information and releases the access purpose coordinate P if the judgment result is positive, and otherwise, sends an inquiry signal and performs personnel inquiry registration after receiving the inquiry signal.
6. A fire management method of the BIM-based intelligent fire management system according to any one of claims 1 to 5, wherein: the method comprises the following steps in sequence:
(1) Constructing a space coordinate system;
(2) Acquiring a person video entering a monitoring area, and intercepting the person video to obtain a picture frame;
(3) Analyzing the picture frame to obtain picture information, and obtaining an access target coordinate P through the picture information;
(4) Counting the same access target coordinate P in real time to obtain the number N of people corresponding to the access target coordinate P;
(5) Monitoring the fire condition at the position of the detection node in real time;
(6) Analyzing the fire at the position of the detection node to obtain a fire influence range coordinate, namely an escape blocking node coordinate;
(7) Receiving the coordinates of the escape blocking node and the coordinates of the shunting node, connecting the coordinates of the shunting nodes to obtain the coordinates of an escape channel line, and obtaining the distance L according to the coordinates of the escape blocking node i Calculating safety coefficient s of each escape passage line coordinate i Coordinate distance L of escape blocking node i The vertical distance between the escape blocking node coordinate and the escape passage line coordinate is taken as the vertical distance;
(8) To the safety factor s i And indicating the maximum escape passage line coordinate.
7. A fire management method as recited in claim 6, wherein: in the step (6), the method for calculating the fire influence range coordinate includes: temperature T detected by fire detection module is judged i Whether or not it is greater than oneIf the judgment result is yes, obtaining position coordinates corresponding to the detection nodes, and sequentially connecting the coordinates to form a closed space; the closed space is a planar circular structure or a spherical or flat three-dimensional structure, and is formed by connecting the coordinates of the nodes in pairs and calculating the length LC of each line segment ij Wherein i and j are node position coordinate numbers, and i is not equal to j, and min { LC (LC) is obtained by calculation ij And will min { LC } ij Sequentially connecting to obtain a closed space;
calculating the radiation distance:
wherein t is the human body tolerance temperature, and lambda is the thermal radiation loss coefficient; calculating to obtain the coordinates of the intersection point of the channel coordinates and the closed space, and extending along the channel coordinates to the center of the closed space in the opposite direction, wherein the extending amount is the radiation distance d, so as to obtain the coordinates of the escape blocking node; the coordinates of the escape blocking node are the coordinates of the fire influence range.
8. A fire management method as recited in claim 6, wherein: in step (7), the safety factor s i The calculation formula of (2) is as follows:
wherein L is i And (4) the coordinate distance of the escape blocking node is determined, a is a fire spread factor, and S is an escape route.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116863678A (en) * | 2023-05-29 | 2023-10-10 | 杭州全连科技有限公司 | Fire extinguishing and fire fighting platform based on nuclear power station and early warning method |
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| CN115171321B (en) | 2024-04-05 |
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