CN108876924B

CN108876924B - Method and device for determining fire evacuation path

Info

Publication number: CN108876924B
Application number: CN201710318108.9A
Authority: CN
Inventors: 黄诗文
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2017-05-08
Filing date: 2017-05-08
Publication date: 2022-01-18
Anticipated expiration: 2037-05-08
Also published as: CN108876924A

Abstract

The invention discloses a method and a device for determining a fire evacuation path, and belongs to the technical field of monitoring. The method comprises the following steps: when a fire disaster occurs in a target area, the monitoring center determines a plurality of feasible evacuation paths and environment information of each feasible evacuation path for the target terminal according to the position information of the target terminal and the environment information reported by the monitoring nodes arranged at a plurality of different positions in the target area, and sends the environment information of the plurality of feasible evacuation paths and each feasible evacuation path to the target terminal, so that trapped people can clearly know the environment information of the plurality of feasible evacuation paths and each feasible evacuation path, thereby making intelligent escape selection and being beneficial to safe evacuation of the trapped people in the target area.

Description

Method and device for determining fire evacuation path

Technical Field

The invention relates to the technical field of monitoring, in particular to a method and a device for determining a fire evacuation path.

Background

When a fire occurs, if there are trapped people in a fire occurrence area, the trapped people need to be evacuated in time to be away from the fire occurrence area in order to avoid casualties and other situations of the trapped people, and therefore, a method for determining a fire evacuation path is widely concerned by people. In the related art, the monitoring center can know the fire occurrence situation through the information fed back by the sensors such as the temperature, smoke and the like in the camera and the corridor, and evacuate the trapped people.

However, although the monitoring center determines the fire range and the fire evacuation path according to each sensor, the trapped person can only know the fire condition of the area seen by the trapped person, which easily causes the trapped person to be confused during evacuation, thereby making blind escape selection.

Disclosure of Invention

In order to solve the problem that in the related art, a trapped person can only know the fire condition of an area seen by the trapped person, cannot accurately recognize an escape path, or can make blind escape selection due to panic, the embodiment of the invention provides a method and a device for determining a fire evacuation path. The technical scheme is as follows:

in one aspect, there is provided a method of determining a fire evacuation path, the method including:

when a fire disaster occurs in a target area, acquiring position information of a target terminal in the target area;

determining a plurality of feasible evacuation paths and environmental information of each feasible evacuation path through a three-dimensional model which is established for the target area in advance based on environmental information reported by monitoring nodes arranged at a plurality of different positions in the target area and the position information of the target terminal;

And sending the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal so that the target terminal displays the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path.

Optionally, the determining, based on the environmental information reported by the monitoring nodes disposed at a plurality of different positions in the target area and the position information of the target terminal, a plurality of feasible evacuation paths and the environmental information of each feasible evacuation path through a three-dimensional model established in advance for the target area includes:

determining the position information of a barrier point in the target area according to the environment information reported by the monitoring nodes arranged at the different positions, wherein the barrier point is a position point for preventing the evacuation of the trapped people;

determining the positions of the obstacle point and the target terminal in the three-dimensional model according to the position information of the obstacle point and the position information of the target terminal;

determining the plurality of feasible evacuation paths through a preset path search algorithm according to the obstacle points and the positions of the target terminals in the three-dimensional model;

and determining the environmental information of each feasible evacuation path according to the environmental information reported by the monitoring nodes arranged at a plurality of different positions in the target area.

Optionally, after determining the environmental information of each feasible evacuation path according to the environmental information reported by the monitoring nodes set at a plurality of different positions in the target area, the method further includes:

determining, for each of the plurality of feasible evacuation paths, a length of the feasible evacuation path;

determining a danger coefficient of the feasible evacuation path according to the length of the feasible evacuation path and the environmental information of the feasible evacuation path;

sequencing the plurality of feasible evacuation paths according to the danger coefficients of the plurality of feasible evacuation paths to obtain the priority sequencing among the plurality of feasible evacuation paths;

correspondingly, after the sending the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal, the method further includes:

and sending the priority sequence of the plurality of feasible evacuation paths to the target terminal so that the target terminal displays the plurality of feasible evacuation paths according to the priority sequence of the plurality of feasible evacuation paths.

Optionally, the method further comprises:

when a selection instruction of a target feasible evacuation path sent by the target terminal is received, marking the target feasible evacuation path and the position information of the target terminal in the three-dimensional model, wherein the target feasible evacuation path is any one of the feasible evacuation paths;

And sending the three-dimensional model marked with the target feasible evacuation path and the position information of the target terminal to the target terminal so that the marked three-dimensional model is displayed by the target terminal.

Optionally, the method further comprises:

when a cruise preview instruction of the target feasible evacuation path sent by the target terminal is received, acquiring a video picture reported by each monitoring node in a plurality of monitoring nodes arranged in the target feasible evacuation path, and overlapping the video picture and a scene of the three-dimensional model at the monitoring node to obtain a video picture of the three-dimensional model at the monitoring node;

and sequentially sending video pictures of the three-dimensional model at the plurality of monitoring nodes to the target terminal according to the sequence of the distances between the plurality of monitoring nodes and the target terminal from near to far so that the target terminal sequentially displays the video pictures of the three-dimensional model at the plurality of monitoring nodes.

Optionally, after the video picture of the three-dimensional model at the monitoring node is obtained by superimposing the video picture and the scene of the three-dimensional model at the monitoring node, the method further includes:

Acquiring position information of other terminals in the target area, a target feasible evacuation path selected by the other terminals and the moving speed of the other terminals;

determining the estimated number of people at the monitoring node according to the position information of the other terminals, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals;

after the video pictures of the three-dimensional model at the monitoring nodes are sequentially sent to the target terminal according to the sequence of the distances between the monitoring nodes and the target terminal from near to far, the method further comprises the following steps:

and sending the estimated number of people at the monitoring node to the target terminal so that the target terminal displays the estimated number of people at the monitoring node when displaying the video picture of the three-dimensional model at the monitoring node.

Optionally, after receiving the instruction for selecting the target feasible evacuation path, the method further includes:

acquiring the position information of the target terminal every other preset time;

and determining the moving speed of the target terminal according to the acquired position information of the target terminal, and storing the position information of the target terminal, the target feasible evacuation path selected by the target terminal and the moving speed of the target terminal.

In another aspect, there is provided a fire evacuation path determining apparatus, the apparatus including:

the first acquisition module is used for acquiring the position information of a target terminal in a target area when the target area is in fire;

a first determining module, configured to determine, based on environment information reported by monitoring nodes arranged at a plurality of different positions in the target area and the position information of the target terminal, a plurality of feasible evacuation paths and environment information of each feasible evacuation path through a three-dimensional model established in advance for the target area;

the first sending module is used for sending the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal so that the target terminal displays the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path.

Optionally, the first determining module includes:

the first determining unit is used for determining the position information of the obstacle point in the target area according to the environment information reported by the monitoring nodes arranged at the different positions, wherein the obstacle point is a position point for preventing the escape of the trapped people;

a second determining unit, configured to determine, according to the position information of the obstacle point and the position information of the target terminal, positions of the obstacle point and the target terminal in the three-dimensional model;

A third determining unit, configured to determine, according to the obstacle point and the position of the target terminal in the three-dimensional model, the plurality of feasible evacuation paths by using a preset path search algorithm;

and the fourth determining unit is used for determining the environmental information of each feasible evacuation path according to the environmental information reported by the monitoring nodes arranged at a plurality of different positions in the target area.

Optionally, the first determining module further includes:

a fifth determining unit configured to determine, for each of the plurality of feasible evacuation paths, a length of the feasible evacuation path;

a sixth determining unit, configured to determine a risk coefficient of the feasible evacuation path according to the length of the feasible evacuation path and the environmental information of the feasible evacuation path;

the sorting unit is used for sorting the feasible evacuation paths according to the danger coefficients of the feasible evacuation paths so as to obtain the priority sorting among the feasible evacuation paths;

correspondingly, the device further comprises:

a second sending module, configured to send the priority ranking of the multiple feasible evacuation paths to the target terminal, so that the target terminal displays the multiple feasible evacuation paths according to the priority ranking of the multiple feasible evacuation paths.

Optionally, the apparatus further comprises:

a marking module, configured to mark, in the three-dimensional model, a target feasible evacuation path and location information of the target terminal when a selection instruction of the target feasible evacuation path sent by the target terminal is received, where the target feasible evacuation path is any one of the plurality of feasible evacuation paths;

and the third sending module is used for sending the three-dimensional model marked with the target feasible evacuation path and the position information of the target terminal to the target terminal so that the marked three-dimensional model is displayed by the target terminal.

Optionally, the apparatus further comprises:

the superposition module is used for acquiring a video picture reported by each monitoring node in a plurality of monitoring nodes arranged in the target feasible evacuation path when a cruise preview instruction of the target feasible evacuation path sent by the target terminal is received, and superposing the video picture and a scene of the three-dimensional model at the monitoring node to obtain a video picture of the three-dimensional model at the monitoring node;

and a fourth sending module, configured to sequentially send, to the target terminal, video pictures of the three-dimensional model at the multiple monitoring nodes, respectively, according to a sequence from near to far between the multiple monitoring nodes and the target terminal, so that the target terminal sequentially displays the video pictures of the three-dimensional model at the multiple monitoring nodes, respectively.

Optionally, the apparatus further comprises:

the second acquisition module is used for acquiring the position information of other terminals in the target area, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals;

the second determining module is used for determining the estimated number of people at the monitoring node according to the position information of the other terminals, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals;

the device further comprises:

and the fifth sending module is used for sending the estimated number of people at the monitoring node to the target terminal so that the target terminal displays the estimated number of people at the monitoring node when displaying the video picture of the three-dimensional model at the monitoring node.

Optionally, the apparatus further comprises:

the third acquisition module is used for acquiring the position information of the target terminal every preset time length;

and the storage module is used for determining the moving speed of the target terminal according to the acquired position information of the target terminal and storing the position information of the target terminal, the target feasible evacuation path selected by the target terminal and the moving speed of the target terminal.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: when a fire disaster occurs in a target area, the monitoring center determines a plurality of feasible evacuation paths and environment information of each feasible evacuation path for the target terminal according to the position information of the target terminal and the environment information reported by the monitoring nodes arranged at a plurality of different positions in the target area, and sends the environment information of the plurality of feasible evacuation paths and each feasible evacuation path to the target terminal, so that trapped people can clearly know the environment information of the plurality of feasible evacuation paths and each feasible evacuation path, thereby making intelligent escape selection and being beneficial to safe evacuation of the trapped people in the target area.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a fire evacuation system according to an embodiment of the present invention;

Fig. 2 is a flowchart of a method for determining a fire evacuation route according to an embodiment of the present invention;

fig. 3A is a flowchart of another fire evacuation path determination method according to an embodiment of the present invention;

fig. 3B is a schematic interface display diagram of a target terminal according to an embodiment of the present invention;

fig. 4 is a block diagram of a fire evacuation route determination apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For convenience of description, before describing the method for determining a fire evacuation path according to an embodiment of the present invention in detail, an application scenario of the embodiment of the present invention will be described. In the related art, in order to safely and smoothly evacuate the trapped people from the fire place when a fire occurs in the target area, a fire evacuation path is determined so that the trapped people can be evacuated in time through the determined fire evacuation path. The present invention is applied to a scenario in which a fire evacuation path is determined when a fire breaks out in a target area.

Fig. 1 is a schematic view of a fire evacuation system 100 according to an embodiment of the present invention, and as shown in fig. 1, the fire evacuation system 100 includes monitoring nodes 101, a monitoring center 102 and terminals 103, which are disposed at a plurality of different locations in a target area. The monitoring node 101 and the monitoring center 102 may be connected in a wireless or wired manner for communication, and the monitoring node 102 and the terminal 103 may also be connected in a wireless or wired manner for communication.

The monitoring node 101 is configured to collect environmental information of a target area, such as temperature, smoke, toxic and harmful gas, and report the environmental information of the target area to the monitoring center 102.

The monitoring center 102 is configured to process the environmental information reported by the monitoring node 101 to determine whether a fire disaster occurs in the target area; and when a fire disaster occurs in the target area, determining a feasible evacuation path for the terminal 103 according to the position of the terminal 103 in the target area, and transmitting the determined feasible evacuation path and the environmental information of the feasible evacuation path to the terminal 103.

The terminal 103 is configured to, after receiving the environment information of the feasible evacuation path and the feasible evacuation path sent by the monitoring center 102, display the environment information of the feasible evacuation path and the feasible evacuation path, so that the user can know the current feasible evacuation path and the fire situation on the feasible evacuation path.

It should be noted that the environment information of the target area further includes a video picture of the target area, that is, the monitoring node 101 is further configured to collect the video picture of the target area. At this time, the monitoring center 102 is further configured to display a video picture acquired by the monitoring node 101, so that a manager of the monitoring center 102 can know the condition of the target area in real time.

In the embodiment of the present invention, the monitoring node 101 is an information collecting device installed in different positions of the target area in advance, and the information collecting device may be a video monitoring device, a temperature sensor, a smoke sensor, a toxic and harmful gas sensor, or the like, and is illustrated in fig. 1 by taking the video monitoring device as an example. The terminal 103 may be a mobile phone, a computer, a tablet computer, or a smart watch, and is illustrated in fig. 1 by taking a mobile phone as an example.

Optionally, the fire evacuation system shown in fig. 1 may further include an alarm device, which is a device pre-installed in the target area, and when the monitoring center 102 determines that a fire occurs in the target area, the monitoring center 102 may control the alarm device to alarm to prompt people trapped in the target area to evacuate in time.

Fig. 2 is a flowchart of a method for determining a fire evacuation path according to an embodiment of the present invention, which can be applied to, but is not limited to, the monitoring center 102 shown in fig. 1, and as shown in fig. 2, the method for determining a fire evacuation path includes the following steps.

Step 201: when a fire breaks out in a target area, position information of a target terminal located in the target area is acquired.

When a fire disaster occurs in a target area, a monitoring center needs to acquire position information of a target terminal first to know the specific position of the target terminal in the target area.

Step 202: and determining a plurality of feasible evacuation paths and the environmental information of each feasible evacuation path through a three-dimensional model which is established for the target area in advance based on the environmental information reported by the monitoring nodes arranged at a plurality of different positions in the target area and the position information of the target terminal.

After determining the location information of the target terminal, the monitoring center may determine a plurality of feasible evacuation paths for the target terminal according to the specific location of the target terminal in the target area and the fire condition of the target area.

Step 203: and sending the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal so that the target terminal displays the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path.

After the monitoring center determines a plurality of feasible evacuation paths for the target terminal, the monitoring center can send the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal, and a user can select one of the feasible evacuation paths to safely evacuate according to the self condition through the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path displayed on the target terminal.

In the embodiment of the invention, when a fire disaster occurs in the target area, the monitoring center determines a plurality of feasible evacuation paths and environment information of each feasible evacuation path for the target terminal according to the position information of the target terminal and the environment information reported by the monitoring nodes arranged at a plurality of different positions in the target area, and sends the plurality of feasible evacuation paths and the environment information of each feasible evacuation path to the target terminal, so that trapped people can clearly know the plurality of feasible evacuation paths and the environment information of each feasible evacuation path, thereby making a reasonable escape selection and being beneficial to safe evacuation of the trapped people in the target area.

Fig. 3A is a flowchart of another method for determining a fire evacuation path, which is applied to the fire evacuation monitoring system 100 shown in fig. 1, according to an embodiment of the present invention, and as shown in fig. 3A, the method for determining a fire evacuation path includes the following steps.

Step 301: the monitoring center receives the environmental information reported by the monitoring nodes arranged at a plurality of different positions in the target area, and judges whether the target area has a fire or not based on the environmental information reported by the monitoring nodes arranged at the plurality of different positions.

Because the environment information of the target area collected by the monitoring node comprises two different types of information, one is information such as temperature, smoke, toxic and harmful gas and the like, and the other is a video picture of the target area, the monitoring center judges whether the target area has a fire or not according to the environment information reported by the monitoring node.

In a first implementation manner, when the monitoring node is used for acquiring information such as temperature, smoke, toxic and harmful gas and the like of a target area, the monitoring center is provided with a first environmental information threshold value aiming at the monitoring node in advance. When the monitoring center receives the environmental information reported by the monitoring node, the environmental information reported by the monitoring node is compared with a first environmental information threshold value, if the environmental information reported by the monitoring node exceeds the first environmental information threshold value, the environmental information of the target area at the monitoring node is abnormal, and at the moment, the monitoring center can determine that the fire disaster happens to the target area at the monitoring node.

For example, m temperature sensors, m smoke sensors, and m toxic and harmful gas sensors are provided in advance at a plurality of different positions in the target area. The device comprises m temperature sensors, m smoke sensors and m poisonous and harmful gas sensors, wherein the m temperature sensors are used for collecting temperature information of a target area at different positions, the m smoke sensors are used for collecting smoke concentration information of the target area at different positions, and the m poisonous and harmful gas sensors are used for collecting poisonous and harmful gas concentration information of the target area at different positions. And, set up first temperature threshold in advance to m temperature sensor, set up first smog concentration threshold in advance to m smog sensor, be provided with first harmful and noxious gas concentration threshold to m poisonous and noxious gas sensor.

And the monitoring center receives the environmental information reported by the plurality of sensors in real time. When the temperature information reported by the temperature sensor is received, the monitoring center judges whether the temperature information exceeds the first temperature threshold, and if the temperature information exceeds the first temperature threshold, the target area is indicated to possibly have a fire or be incapable of passing at the temperature sensor. When the smoke concentration information reported by the smoke sensor is received, the monitoring center judges whether the smoke concentration information exceeds the first smoke concentration threshold value, and if the smoke concentration information exceeds the first smoke concentration threshold value, the monitoring center indicates that the target area is possibly in fire at the smoke sensor. When the toxic and harmful gas concentration information reported by the toxic and harmful gas sensor is received, the monitoring center judges whether the toxic and harmful gas concentration information exceeds the first toxic and harmful gas concentration threshold value, and if the toxic and harmful gas concentration information exceeds the first toxic and harmful gas concentration threshold value, the target area is shown to be possibly conflicted or unable to pass at the toxic and harmful gas sensor.

In a second implementation manner, when the monitoring node is used for acquiring a video picture of a target area, the monitoring center displays the video picture of the target area when receiving the video picture acquired by the monitoring node. If flame smoke exists in the video picture of the target area, the monitoring center detects a fire occurrence instruction and determines that the fire occurs in the target area at the monitoring node.

The fire occurrence instruction is triggered by a manager of the monitoring center through preset operation, and the preset operation can be clicking, sliding or voice operation and the like.

When the monitoring center determines that the target area is in fire, a feasible evacuation path can be pushed for the trapped people in the target area through steps 302 to 306.

Optionally, when the fire evacuation system shown in fig. 1 further includes an alarm device, if the monitoring center determines that a fire occurs in the target area, the monitoring center may further send an alarm command to the alarm device, and when the alarm device receives the alarm command, an alarm signal is generated to prompt people trapped in the target area to evacuate in time.

Step 302: when a fire breaks out in a target area, the monitoring center acquires the position information of a target terminal located in the target area.

In the embodiment of the present invention, the terminal shown in fig. 1 is pre-installed with a fire evacuation application, and a server corresponding to the fire evacuation application is a monitoring center, so that when a fire occurs in a target area, the monitoring center pushes fire alarm information to the terminal through the fire evacuation application, and sends a location information acquisition request to the terminal. When receiving the position information acquisition request, the terminal displays the position information acquisition request and displays two options of 'confirm' and 'cancel' aiming at the position information acquisition request. When the terminal detects the preset operation aiming at the 'confirmation' option, the position information of the terminal is obtained, and the position information of the terminal is sent to the monitoring center, and when the monitoring center receives the position information of the terminal, the position information of the target terminal is also obtained. Of course, the above "confirm" option and "cancel" option are for the user to determine whether to report the location information of the user to the monitoring center when the fire occurs in the target area where the user is currently located. When a fire disaster occurs in the target area and the target terminal receives the position information acquisition request sent by the monitoring center, the target terminal can also directly send the current position information of the target terminal to the monitoring center without the confirmation of a user.

After the monitoring center obtains the location information of the target terminal, the monitoring center may determine, based on the environmental information reported by the monitoring nodes set at a plurality of different locations in the target area and the location information of the target terminal, a plurality of feasible evacuation paths and the environmental information of each feasible evacuation path through a three-dimensional model established in advance for the target area. Specifically, the monitoring center may implement the above-described process through step 303 and step 304.

Step 303: and the monitoring center determines the position information of the obstacle point in the target area according to the environment information reported by the monitoring nodes arranged at the different positions, and determines the positions of the obstacle point and the target terminal in the three-dimensional model according to the position information of the obstacle point and the position information of the target terminal.

The obstacle point refers to a position point which hinders the evacuation of trapped people, and the obstacle point can be a collapse point, a flame point, a toxic and harmful gas point or the like in the target area. In the embodiment of the invention, when the monitoring node is used for acquiring information such as temperature, smoke, toxic and harmful gases and the like of a target area, a second environment information threshold value is set for the monitoring node in advance, wherein the second environment information threshold value is larger than the first environment information threshold value. When the environmental information reported by the monitoring node is greater than the second environmental information threshold, the environmental information of the target area at the monitoring node is indicated to exceed the bearable range of the body of the trapped person, and at the moment, the monitoring center can determine the position of the monitoring node as an obstacle point. For example, when the temperature information reported by the temperature sensor exceeds the second temperature threshold, the monitoring center may determine the position of the temperature sensor as an obstacle point.

When the monitoring node is used for acquiring a video picture of a target area, if a monitoring center receives an obstacle point selection instruction triggered by a manager through a preset operation in the process of displaying the video picture, the monitoring center determines the position selected by the manager as an obstacle point.

When the monitoring center determines the position information of the obstacle point and the position information of the target terminal, the position information of the obstacle point and the position information of the target terminal are mapped into a three-dimensional model which is established for a target area in advance, and the positions of the obstacle point and the target terminal in the three-dimensional model are obtained. The following description will take an example in which the monitoring center determines the position of the obstacle point in the three-dimensional model.

Specifically, a plurality of calibration points are set in a three-dimensional model which is set up in advance for a target area, and the monitoring center stores position information of the plurality of calibration points in advance. When the monitoring center determines the position information of the obstacle point, the position relationship between the obstacle point and the plurality of calibration points can be determined according to the position information of the obstacle point and the position information of the plurality of calibration points; and according to the positions of the plurality of calibration points in the three-dimensional model and the position relation between the obstacle point and the plurality of calibration points, the monitoring center determines the position of the obstacle point in the three-dimensional model.

Step 304: and the monitoring center determines a plurality of feasible evacuation paths according to the positions of the obstacle points and the target terminal in the three-dimensional model through a preset path search algorithm, and determines the environmental information of each feasible evacuation path according to the environmental information reported by the monitoring nodes arranged at a plurality of different positions in the target area.

In a possible implementation manner, the implementation process of the preset path search algorithm may be: the monitoring center grids the space corresponding to the three-dimensional model, the three-dimensional model after the space grid comprises a plurality of nodes, and each node represents an area in a preset range. And determining a node corresponding to the target terminal in the three-dimensional model after the space gridding according to the position of the target terminal in the three-dimensional model, and marking the node as a node A, and simultaneously determining a node corresponding to the obstacle point in the three-dimensional model after the space gridding, and marking the node as a node B. And determining a corresponding node of the safety exit in the three-dimensional model after the space gridding according to the position of the safety exit in the target area, and marking the node as a node C.

And the monitoring center searches a plurality of candidate nodes closest to the node A by taking the node A as the center in the three-dimensional model after the space gridding. It should be noted that in the searching process, the existence of the node B needs to be ignored, that is, the node B is not included in the searched multiple candidate nodes. And determining the distance between each candidate node and the node C in the searched candidate nodes, and selecting the candidate node closest to the node C from the candidate nodes. And at the moment, the monitoring center takes the selected alternative nodes as the center, and circularly executes the operation until the searched multiple alternative nodes comprise the node C. And the monitoring center connects the node A, the node C and the alternative node selected each time to obtain a feasible evacuation path.

Because there may be a plurality of security exits in the target area, the monitoring center may obtain a plurality of feasible evacuation routes through the preset route search algorithm according to nodes corresponding to the plurality of security exits in the three-dimensional model after the spatial meshing.

For each feasible evacuation path in the feasible evacuation paths, the monitoring center selects the monitoring node arranged on the feasible evacuation path from the monitoring nodes arranged at a plurality of different positions in the target area, and then determines the environmental information of the feasible evacuation path according to the environmental information reported by the monitoring nodes on the feasible evacuation path.

The environmental information of the feasible evacuation path may be, for example, average temperature, average smoke concentration, average toxic and harmful gas concentration, and the number of monitoring nodes on the feasible evacuation path, where the environmental information is greater than the first environmental information threshold.

For example, the monitoring center may determine, according to the temperature information reported by the temperature sensors on the feasible evacuation path, the average temperature on the feasible evacuation path and the number of the temperature sensors whose temperature information exceeds the first temperature threshold.

In the embodiment of the present invention, after the monitoring center determines the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path, the monitoring center may directly send the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal. It is also possible to determine the priority ranking among the plurality of feasible evacuation paths according to step 305, and then send the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal.

Step 305: the monitoring center determines a prioritization among the plurality of feasible evacuation paths.

Specifically, for each of the plurality of feasible evacuation paths, the monitoring center determines a length of the feasible evacuation path. And determining the danger coefficient of the feasible evacuation path according to the length of the feasible evacuation path and the environmental information of the feasible evacuation path. And sequencing the plurality of feasible evacuation paths according to the danger coefficients of the plurality of feasible evacuation paths so as to obtain the priority sequence among the plurality of feasible evacuation paths.

The monitoring center may set a first weight and a second weight for the length of the feasible evacuation path and the environmental information of the feasible evacuation path, respectively, at this time, the monitoring center may multiply the length of the feasible evacuation path and the first weight to obtain a first numerical value, and multiply the environmental information of the feasible evacuation path and the second weight to obtain a second numerical value. And taking the sum of the first value and the second value as the danger coefficient of the feasible evacuation path.

In addition, the plurality of feasible evacuation paths are sorted according to the risk coefficients of the plurality of feasible evacuation paths, which may specifically be: and determining the feasible evacuation path with the smaller danger coefficient as the feasible evacuation path with the larger priority. For example, the monitoring center determines three feasible evacuation paths, which are respectively path 1, path 2, and path 3, and the risk coefficients of path 1 are respectively 0.1, the risk coefficient of path is 0.2, and the risk coefficient of path 3 is 0.3, at this time, the priority ranks of the three feasible evacuation paths are sequentially: path 1> path 2> path 3.

Step 306: the monitoring center sends a plurality of feasible evacuation paths, the environmental information of each feasible evacuation path and the priority sequence of the feasible evacuation paths to the target terminal, so that the target terminal displays the feasible evacuation paths and the environmental information of each feasible evacuation path according to the priority sequence of the feasible evacuation paths.

In a possible implementation manner, when the target terminal receives the plurality of feasible evacuation paths, the environmental information of each feasible evacuation path, and the priority ranking of the plurality of feasible evacuation paths sent by the monitoring center, the target terminal may display the feasible evacuation path with the higher priority in the plurality of feasible evacuation paths on the top of the display screen of the target terminal according to the priority ranking of the plurality of feasible evacuation paths, and display the feasible evacuation path with the lower priority in the plurality of feasible evacuation paths on the bottom of the display screen of the target terminal.

For example, fig. 3B is a schematic interface display diagram of a target terminal according to an embodiment of the present invention, and as shown in fig. 3B, after the target terminal receives a plurality of feasible evacuation paths and environment information of each row of evacuation paths, the interface shown in fig. 3B may be displayed, where the priority of feasible evacuation path 1 is higher than the priority of feasible evacuation path 2, and the priority of feasible evacuation path 2 is higher than the priority of feasible evacuation path 3. And the environment information option is also included below each feasible evacuation path, and when the target terminal detects that the user triggers the environment information option through preset operation, the target terminal can display the environment information of the feasible evacuation path, so that the user can know the fire situation on each feasible evacuation path.

Optionally, in the embodiment of the present invention, the target terminal may further display the position of the feasible evacuation path in the three-dimensional model through steps 307 to 308.

Step 307: and the target terminal sends a selection instruction of a target feasible evacuation path to the monitoring center, wherein the target feasible evacuation path is any one of the feasible evacuation paths.

After the target terminal displays the plurality of feasible evacuation paths, when the target terminal detects a selection instruction of the target feasible evacuation path triggered by a user through a preset operation, the target terminal forwards the selection instruction of the target feasible evacuation path to the monitoring center.

As shown in fig. 3B, the interface of the target terminal includes a "feasible evacuation path 1" selection type, a "feasible evacuation path 2" selection type, and a "feasible evacuation path 3" selection type. When the target terminal detects that the user selects the option of the feasible evacuation path 1 through the preset operation, the feasible evacuation path 1 is determined as the target feasible evacuation path, and a selection instruction of the target feasible evacuation path is sent to the monitoring center.

Step 308: and when the monitoring center receives a selection instruction of the target feasible evacuation path, sending the three-dimensional model marked with the target feasible evacuation path and the position information of the target terminal to the target terminal so that the target terminal displays the marked three-dimensional model.

In order to enable a user to visually see the position of the target feasible evacuation path in the target area, when the monitoring center receives a selection instruction of the target feasible evacuation path sent by the target terminal, the position information of the target feasible evacuation path and the target terminal is marked in the three-dimensional model, and the three-dimensional model after the position information of the target feasible evacuation path and the target terminal is marked is sent to the target terminal, so that the marked three-dimensional model is displayed by the target terminal. When the target terminal receives the marked three-dimensional model, the marked three-dimensional model may be displayed at a "three-dimensional scene presentation" display area shown in fig. 3B.

When the user views the marked three-dimensional model through the target terminal, the method is equivalent to viewing the feasible evacuation route of the target and the macroscopic position of the user in the three-dimensional model from the view angle of the god.

The method includes the steps of marking position information of a target feasible evacuation path and a target terminal in a three-dimensional model, namely marking the position information of the target feasible evacuation path and the position information of the target terminal in the three-dimensional model by using a preset marker, wherein the preset marker can be a preset color or a preset texture picture.

Optionally, in the embodiment of the present invention, the target terminal may further display a real-time video picture of the feasible evacuation path through steps 309 to 311, that is, perform cruise preview on the feasible evacuation path.

Step 309: and the target terminal sends a cruise preview instruction of the feasible evacuation route of the target to the monitoring center.

Specifically, in a possible implementation manner, a display interface of the target terminal includes a "cruise preview" option, when the target terminal detects that a user selects the "cruise preview" option through a preset operation, and instructs, it is determined that a "cruise preview" instruction for a target feasible evacuation path is detected, and at this time, the target terminal sends the cruise preview instruction for the target feasible evacuation path to the monitoring center.

For example, in the interface display diagram of the target terminal shown in fig. 3B, a "cruise preview" option is also included under each "feasible evacuation path". When a user clicks the 'cruise preview' type below the 'feasible evacuation path 1' option, the target terminal detects a cruise preview instruction for the feasible evacuation path 1 and sends the cruise preview instruction for the feasible evacuation path 1 to the monitoring center, namely, the feasible evacuation path 1 is the target feasible evacuation path at the moment.

Step 310: when the monitoring center receives a cruise preview instruction of the target feasible evacuation path, determining a video picture of the three-dimensional model at each monitoring node in a plurality of monitoring nodes arranged in the target feasible evacuation path.

Specifically, for each monitoring node in a plurality of monitoring nodes arranged in a target feasible evacuation path, the monitoring center obtains a video picture reported by the monitoring node, and superimposes the video picture and a scene of the three-dimensional model at the monitoring node to obtain a video picture of the three-dimensional model at the monitoring node.

The scene of the three-dimensional model at the monitoring node is usually a channel, and at this time, the video picture and the scene of the three-dimensional model at the monitoring node are superimposed, that is, the video picture is superimposed at a preset position in the channel. The predetermined position may be the floor of the passageway or the wall of the passageway.

In addition, in order to facilitate users to know the possible number of people on the target feasible evacuation path, after the monitoring center determines the video picture of the three-dimensional model at the monitoring node, the monitoring center can also obtain the position information of other terminals in the target area, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals. And the monitoring center determines the estimated number of people at the monitoring node according to the position information of the other terminals, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals.

The other terminals are other terminals in the target area except the target terminal, and the position information of the other terminals, the target feasible evacuation path selected by the other terminals and the moving speed of the other terminals are obtained in advance by the monitoring center. The following description will take the example that the monitoring center obtains the position information of the target terminal, the target feasible evacuation path selected by the target terminal, and the moving speed of the target terminal as an example.

When the monitoring center receives a selection instruction of the target feasible evacuation path, that is, in the process of safe evacuation by the user according to the target feasible evacuation path, the monitoring center can acquire the position information of the target terminal every preset time, and determine the moving speed of the target terminal according to the acquired position information of the target terminal. And storing the position information of the target terminal, the target feasible evacuation path selected by the target terminal and the moving speed of the target terminal.

Step 311: and the monitoring center sequentially sends the video pictures of the three-dimensional model at the plurality of monitoring nodes to the target terminal according to the sequence of the distances between the plurality of monitoring nodes and the target terminal from near to far so that the target terminal sequentially displays the video pictures of the three-dimensional model at the plurality of monitoring nodes.

The monitoring center sequentially sends the video pictures of the three-dimensional model at the plurality of monitoring nodes respectively to the target terminal, that is, the video pictures at the plurality of monitoring nodes are sequentially sent according to a preset time interval, wherein the preset time interval can be 2s, 3s or 5s and the like.

When the target terminal sequentially receives the video pictures of the three-dimensional model at the plurality of monitoring nodes respectively, which are sent by the monitoring center, the video pictures of the three-dimensional model at the plurality of monitoring nodes respectively are sequentially displayed according to the receiving sequence of the video pictures, so that the cruise preview of the feasible evacuation path of the target is realized.

For example, 10 monitoring nodes are arranged in the target feasible evacuation path, and the 10 monitoring nodes are sequentially labeled as monitoring node 1, monitoring node 2, … and monitoring node 10 according to the order of the distance from the target terminal to the target terminal. For each monitoring node in the 10 monitoring nodes, the monitoring center determines the video pictures of the three-dimensional model at the monitoring node according to the method, and obtains the video pictures of the three-dimensional model at the 10 monitoring nodes respectively. Then, the video picture of the three-dimensional model at the monitoring node 1, the video picture of the three-dimensional model at the monitoring node 2, … and the video picture of the three-dimensional model at the monitoring node 10 are sequentially sent at the speed of sending one video picture every 5 s. When the target terminal receives the video pictures sequentially sent by the monitoring center, the received video pictures can be sequentially displayed in the display area of the three-dimensional scene display shown in fig. 3B according to the receiving sequence of each video picture, so that the cruise preview of the feasible evacuation path of the target is realized. Of course, the target terminal may also sequentially display the received video pictures at the display areas of the other windows.

Optionally, after sequentially sending the video pictures of the three-dimensional model at the monitoring node to the target terminal, the monitoring center may also send the estimated number of people at the monitoring node to the target terminal, so that the estimated number of people at the monitoring node is displayed when the video pictures of the three-dimensional model at the monitoring node are displayed by the target terminal.

Further, in order to facilitate the user to know the fire situation on the feasible evacuation path of the target, after sequentially sending the video pictures of the three-dimensional model at the monitoring nodes to the target terminal, the monitoring center may also send the environmental information reported by the monitoring nodes to the target terminal, so that the target terminal displays the environmental information at the monitoring nodes when displaying the video pictures of the three-dimensional model at the monitoring nodes.

Fig. 4 is a block diagram of a fire evacuation path determining apparatus 400 according to an embodiment of the present invention, the apparatus 400 can be applied to, but not limited to, a monitoring center, and referring to fig. 4, the apparatus 400 includes:

a first obtaining module 401, configured to obtain location information of a target terminal located in a target area when a fire occurs in the target area;

a first determining module 402, configured to determine, based on environment information reported by monitoring nodes and location information of a target terminal, which are set at multiple different locations in a target area, multiple feasible evacuation paths and environment information of each feasible evacuation path through a three-dimensional model that is pre-established for the target area;

a first sending module 403, configured to send the plurality of feasible evacuation paths and the environment information of each feasible evacuation path to a target terminal, so that the target terminal displays the plurality of feasible evacuation paths and the environment information of each feasible evacuation path.

Optionally, the first determining module 402 includes:

The second determining unit is used for determining the positions of the obstacle point and the target terminal in the three-dimensional model according to the position information of the obstacle point and the position information of the target terminal;

the third determining unit is used for determining the plurality of feasible evacuation paths through a preset path searching algorithm according to the positions of the obstacle points and the target terminal in the three-dimensional model;

Optionally, the first determining module 402 further includes:

a fifth determining unit, configured to determine, for each of the plurality of feasible evacuation paths, a length of the feasible evacuation path;

the apparatus 400 further comprises:

and the second sending module is used for sending the priority sequence of the feasible evacuation paths to the target terminal so that the target terminal displays the feasible evacuation paths according to the priority sequence of the feasible evacuation paths.

Optionally, the apparatus 400 further comprises:

the marking module is used for marking the feasible target evacuation path and the position information of the target terminal in the three-dimensional model when a selection instruction of the feasible target evacuation path sent by the target terminal is received, wherein the feasible target evacuation path is any one of a plurality of feasible evacuation paths;

and the third sending module is used for sending the three-dimensional model marked with the target feasible evacuation path and the position information of the target terminal to the target terminal so that the target terminal displays the marked three-dimensional model.

Optionally, the apparatus 400 further comprises:

the system comprises a superposition module, a display module and a display module, wherein the superposition module is used for acquiring a video picture reported by each monitoring node in a plurality of monitoring nodes arranged in a target feasible evacuation path when a cruise preview instruction of the target feasible evacuation path sent by a target terminal is received, and superposing the video picture and the scene of the three-dimensional model at the monitoring node to obtain the video picture of the three-dimensional model at the monitoring node;

and the fourth sending module is used for sequentially sending the video pictures of the three-dimensional models at the plurality of monitoring nodes to the target terminal according to the sequence of the distances between the plurality of monitoring nodes and the target terminal from near to far so as to enable the target terminal to sequentially display the video pictures of the three-dimensional models at the plurality of monitoring nodes.

Optionally, the apparatus 400 further comprises:

accordingly, the apparatus 400 further comprises:

Optionally, the apparatus 400 further comprises:

In the embodiment of the invention, when a fire disaster occurs in the target area, the monitoring center determines a plurality of feasible evacuation paths and environment information of each feasible evacuation path for the target terminal according to the position information of the target terminal and the environment information of the monitoring nodes arranged at a plurality of different positions in the target area, and sends the plurality of feasible evacuation paths and the environment information of each feasible evacuation path to the target terminal, so that trapped people can clearly know the plurality of feasible evacuation paths and the environment information of each feasible evacuation path, thereby making reasonable escape selection and being beneficial to safe evacuation of the trapped people in the target area.

It should be noted that: the fire evacuation path determining device provided in the above embodiments is only illustrated by dividing the functional modules when determining the fire evacuation path, and in practical applications, the function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to perform all or part of the functions described above. In addition, the determining device of the fire evacuation path and the determining method of the fire evacuation path provided by the above embodiments belong to the same concept, and the specific implementation process thereof is described in detail in the method embodiments and will not be described again.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A method of determining a fire evacuation path, the method comprising:

sending the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal so that the target terminal displays the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path;

the method further comprises the following steps:

when a selection instruction of a target feasible evacuation path sent by the target terminal is received, marking the target feasible evacuation path and the position information of the target terminal in the three-dimensional model, wherein the target feasible evacuation path is any one of the feasible evacuation paths; sending the three-dimensional model marked with the target feasible evacuation path and the position information of the target terminal to the target terminal so that the marked three-dimensional model is displayed by the target terminal;

2. The method according to claim 1, wherein the determining, based on the environmental information reported by the monitoring nodes disposed at different locations in the target area and the location information of the target terminal, a plurality of feasible evacuation paths and the environmental information of each feasible evacuation path through a three-dimensional model established in advance for the target area comprises:

3. The method according to claim 2, wherein after determining the environmental information of each feasible evacuation path according to the environmental information reported by the monitoring nodes disposed at different positions in the target area, the method further comprises:

4. The method of claim 1, wherein said overlaying said video frame and said three-dimensional model at said monitoring node results in a video frame of said three-dimensional model at said monitoring node, further comprising:

5. The method of claim 1, wherein said receiving an instruction to select said target feasible evacuation path further comprises:

6. A fire evacuation path determining apparatus, the apparatus comprising:

the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring the position information of a target terminal in a target area when the target area is in a fire;

a first sending module, configured to send the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path to the target terminal, so that the target terminal displays the plurality of feasible evacuation paths and the environmental information of each feasible evacuation path;

the device further comprises:

a third sending module, configured to send the three-dimensional model obtained by marking the target feasible evacuation path and the location information of the target terminal to the target terminal, so that the target terminal displays the marked three-dimensional model;

7. The apparatus of claim 6, wherein the first determining module comprises:

8. The apparatus of claim 7, wherein the first determining module further comprises:

Correspondingly, the device further comprises:

9. The apparatus of claim 6, wherein the apparatus further comprises:

the device further comprises:

10. The apparatus of claim 6, wherein the apparatus further comprises:

11. A computer-readable storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the steps of the method according to any one of claims 1-5.