CN114419816A - Method for determining evacuation path and intelligent fire-fighting system - Google Patents
Method for determining evacuation path and intelligent fire-fighting system Download PDFInfo
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- CN114419816A CN114419816A CN202210095669.8A CN202210095669A CN114419816A CN 114419816 A CN114419816 A CN 114419816A CN 202210095669 A CN202210095669 A CN 202210095669A CN 114419816 A CN114419816 A CN 114419816A
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- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
- G08B7/066—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources guiding along a path, e.g. evacuation path lighting strip
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Abstract
The invention provides a method for determining an evacuation path and an intelligent fire-fighting system. And respectively determining a first optimal safety exit corresponding to the area to be evacuated and a second optimal safety exit corresponding to the fire area based on the condition of fire spread. And taking the shortest path from the area to be evacuated to the first optimal safety exit as a first evacuation path, and taking the shortest path from the area with the fire disaster to the second optimal safety exit as a second evacuation path. And controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path. By adopting the scheme, when a fire disaster occurs, the optimal evacuation path can be dynamically planned according to the actual fire condition, and the indication direction of the emergency evacuation indicator lamp is controlled according to the planned evacuation path so as to guide the evacuation personnel to evacuate, so that the potential safety hazard in the personnel evacuation process is reduced.
Description
Technical Field
The invention relates to the technical field of control, in particular to a method for determining an evacuation path and an intelligent fire-fighting system.
Background
The fire safety facility is an indispensable facility in a building, and when a fire detector detects a fire in the building, personnel are guided to be emergently evacuated through a fixedly-pointed emergency evacuation indicator lamp.
At present, the evacuation path formed by the emergency evacuation lights directed at a fixed point in the building is fixed and unchangeable; when a fire disaster occurs, people can only evacuate along a fixed evacuation path, the situation that the fire disaster area can be avoided by people in the evacuation process cannot be guaranteed, and the existing people evacuation mode still has great potential safety hazards.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method for determining an evacuation path and an intelligent fire fighting system, so as to solve the problem that the existing people evacuation method still has a large potential safety hazard.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the first aspect of the embodiments of the present invention discloses a method for determining an evacuation path, where the method includes:
under the condition that a fire signal is detected, determining a fire area where a fire disaster occurs in a target building according to the source of the fire signal, and determining an area to be evacuated, where the fire disaster does not occur, in the target building;
for each fire exit in the target building, determining a first minimum length of time required to reach the fire exit from the area to be evacuated, and determining a second minimum length of time required to reach the fire exit from the area of fire, and determining a third minimum length of time required for the fire to spread to the fire exit;
determining at least one first optimal safe exit corresponding to the area to be evacuated from each safe exit by using the first shortest time and the third shortest time, and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path;
determining at least one second optimal safety exit corresponding to the fire area from each safety exit by using the second shortest time and the third shortest time, and taking the shortest path from the fire area to the second optimal safety exit as a second evacuation path;
and controlling the indicating direction of the emergency evacuation indicating lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicating lamp corresponding to the fire area according to the second evacuation path, wherein the indicating direction of the emergency evacuation indicating lamp is unidirectional or bidirectional.
Preferably, the process of determining a third minimum length of time required for the fire to spread to the safe exit comprises:
analyzing and obtaining a fire spreading direction and a fire spreading speed based on the structural data and the decorative material data of the target building;
and determining a third shortest time required for the fire to spread to the safety exit according to the fire spreading direction and the fire spreading speed.
Preferably, determining at least one first optimal safe exit corresponding to the area to be evacuated from each safe exit by using the first shortest time length and the third shortest time length, and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path, includes:
for each safe exit in the target building, if the first shortest time length required for reaching the safe exit from the area to be evacuated is less than the third shortest time length required for the fire to spread to the safe exit, determining the safe exit as a first optimal safe exit;
and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
Preferably, determining at least one second optimal security exit corresponding to the fire area from each security exit by using the second shortest time length and the third shortest time length, and taking a shortest path from the fire area to the second optimal security exit as a second evacuation path, includes:
for each safe exit in the target building, if a second shortest time period required for reaching the safe exit from the fire area is less than a third shortest time period required for the fire to spread to the safe exit, determining the safe exit as a second optimal safe exit;
and taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
Preferably, the indication direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated is used for: directing access to the first optimal egress safety opening corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to the second optimal safe exit corresponding to the second evacuation path.
The second aspect of the embodiment of the present invention discloses an intelligent fire fighting system, which includes:
a first determination unit for determining a fire area in which a fire occurs in a target building and determining an area to be evacuated in which a fire does not occur in the target building, according to a source of the fire signal, in case that the fire signal is detected;
a second determination unit for determining, for each fire exit in the target building, a first minimum time period required to reach the fire exit from the area to be evacuated, a second minimum time period required to reach the fire exit from the area of fire, and a third minimum time period required for the fire to spread to the fire exit;
the first processing unit is used for determining at least one first optimal safety exit corresponding to the area to be evacuated from each safety exit by using the first shortest time and the third shortest time, and taking the shortest path from the area to be evacuated to the first optimal safety exit as a first evacuation path;
the second processing unit is used for determining at least one second optimal safety exit corresponding to the fire area from each safety exit by using the second shortest time and the third shortest time, and taking the shortest path from the fire area to the second optimal safety exit as a second evacuation path;
and the control unit is used for controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path, wherein the indicating direction of the emergency evacuation indicator lamp is unidirectional or bidirectional.
Preferably, the second determination unit for determining a third minimum time period required for the fire to spread to the safety vent includes:
an analysis subunit for analyzing the fire spreading direction and the fire spreading speed based on the structural data and the decorative material data of the target building;
a determining subunit configured to determine a third minimum time period required for the fire to spread to the safety exit, from the fire spreading direction and the fire spreading speed.
Preferably, the first processing unit is specifically configured to: for each safe exit in the target building, if the first shortest time length required for reaching the safe exit from the area to be evacuated is less than the third shortest time length required for the fire to spread to the safe exit, determining the safe exit as a first optimal safe exit; and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
Preferably, the second processing unit is specifically configured to: for each safe exit in the target building, if a second shortest time period required for reaching the safe exit from the fire area is less than a third shortest time period required for the fire to spread to the safe exit, determining the safe exit as a second optimal safe exit; and taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
Preferably, the indication direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated is used for: directing access to the first optimal egress safety opening corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to the second optimal safe exit corresponding to the second evacuation path.
Based on the method for determining the evacuation path and the intelligent fire fighting system provided by the embodiment of the invention, when a fire signal is detected, a fire area and an area to be evacuated are determined. And respectively determining a first optimal safety exit corresponding to the area to be evacuated and a second optimal safety exit corresponding to the fire area based on the condition of fire spread. And taking the shortest path from the area to be evacuated to the first optimal safety exit as a first evacuation path, and taking the shortest path from the area with the fire disaster to the second optimal safety exit as a second evacuation path. And controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path. By adopting the scheme, when a fire disaster occurs, the optimal evacuation path can be dynamically planned according to the actual fire condition, and the indication direction of the emergency evacuation indicator lamp is controlled according to the planned evacuation path so as to guide the evacuation personnel to evacuate, so that the potential safety hazard in the personnel evacuation process is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining an evacuation path according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an emergency evacuation indicator light provided by an embodiment of the invention;
fig. 3 is a diagram illustrating an exemplary evacuation path in a target building when a fire is not occurring according to an embodiment of the present invention;
fig. 4 is a diagram illustrating an exemplary evacuation path in a target building in the event of a fire according to an embodiment of the present invention;
fig. 5 is a block diagram of an intelligent fire fighting system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Known by the background art, the evacuation route that forms by the emergent evacuation pilot lamp of fixed directive is fixed unchangeable in the building at present, and personnel can only evacuate along fixed evacuation route under the condition that the conflagration takes place, can't ensure that personnel can avoid the fire area at evacuation in-process, and the personnel evacuation mode that has now still has great potential safety hazard.
Therefore, the embodiment of the invention provides a method for determining an evacuation path and an intelligent fire fighting system, which can dynamically plan an optimal evacuation path according to an actual fire situation when a fire occurs, and control the indication direction of an emergency evacuation indicator lamp according to the planned evacuation path to guide evacuation personnel to evacuate so as to reduce potential safety hazards in the evacuation process of the personnel.
Referring to fig. 1, a flowchart of a method for determining an evacuation path according to an embodiment of the present invention is shown, where the method includes:
step S101: in case of detecting a fire signal, a fire area in the target building where a fire occurs and an area to be evacuated in the target building where no fire occurs are determined according to the source of the fire signal.
The target building may be a public building such as a mall and a cinema, or a building such as an industrial factory floor, an office building, and a residential building, and the type of the target building is not limited herein. The target building is divided into a plurality of areas in advance, each area is provided with a corresponding fire detector (such as a smoke detector, a temperature detector, a flame detector and the like), and each set fire detector is connected into the intelligent fire protection system at the position of the target building.
In the process of implementing step S101 specifically, in the case of detecting a fire signal, determining the source of the fire signal, that is, determining the specific location of the fire detector that detected the fire signal; the source of the fire signal is used to determine the fire zone (i.e., the zone in which the fire detector that detected the fire signal is located) in the target building where the fire is occurring, which may be one or more fire zones. The area to be evacuated, i.e. the area of the target building other than the area of the fire, in which the fire has not occurred, is determined.
It should be noted that the determination of the fire zone by the fire detector detecting the fire signal is only one of the ways, and the fire zone and the actual situation of the fire can also be determined by means of video monitoring.
Step S102: for each fire exit in the target building, a first minimum length of time required to reach the fire exit from the area to be evacuated is determined, a second minimum length of time required to reach the fire exit from the area of fire is determined, and a third minimum length of time required for the fire to spread to the fire exit is determined.
It is noted that there is at least one security exit (and typically a plurality of security exits) in the target building.
In the process of embodying step S102, for each fire exit in the target building, a first minimum length of time required to reach the fire exit from the area to be evacuated, a second minimum length of time required to reach the fire exit from the area of fire, and a third minimum length of time required for the fire to spread to the fire exit are determined.
That is, the first shortest time period required to reach each of the fire exits from the area to be evacuated is calculated, respectively, and the second shortest time period required to reach each of the fire exits from the area of fire is calculated, respectively, and the third shortest time period required for the fire to spread to each of the fire exits is calculated, respectively. Namely, the corresponding first shortest time length, the second shortest time length and the third shortest time length can be calculated for each safety exit.
For example: suppose there are 2 safe exits in the target building, safe exit A and safe exit B respectively; calculating a first shortest time required for reaching a safe exit A from the area to be evacuated, and calculating a first shortest time required for reaching a safe exit B from the area to be evacuated; calculating a second shortest time required for reaching the safety exit A from the fire area, and calculating a second shortest time required for reaching the safety exit B from the fire area; and calculating a third shortest time required for the fire to spread to the safety exit A and calculating a third shortest time required for the fire to spread to the safety exit B.
It is understood that, when calculating the first shortest time required for reaching the emergency exits from the area to be evacuated, the first shortest time is calculated by using the shortest distance between the area to be evacuated and the emergency exits and the preset speed of movement of the people, that is, the first shortest time is the length of the shortest path between the area to be evacuated and the emergency exits/the preset speed of movement of the people. Similarly, the manner of calculating the second shortest time required for reaching the safety exit from the fire area may refer to the manner of calculating the first shortest time, and will not be described herein again.
When the third shortest time required for the fire to spread to the safe exit is calculated, the third shortest time can be calculated by using the fire spreading speed, the fire spreading direction and the shortest distance between the fire area and the safe exit, that is, the third shortest time is the fire spreading speed/the length of the shortest path between the fire area and the safe exit.
In some embodiments, the specific process of determining the third minimum length of time required for the fire to propagate to the safe exit is: analyzing and obtaining a fire spreading direction and a fire spreading speed based on the structural data and the decorative material data of the target building; for example: and analyzing to obtain the fire spreading direction and the fire spreading speed according to the building structure, the decorative material and the size of the target building. And determining a third shortest time required for the fire to spread to the safe exit according to the fire spreading direction and the fire spreading speed.
Step S103: and determining at least one first optimal safe exit corresponding to the area to be evacuated from each safe exit by using the first shortest time and the third shortest time, and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
From the above, for each security exit, the corresponding first shortest duration, second shortest duration and third shortest duration can be calculated. In the process of implementing step S103 specifically, at least one first optimal egress safety from all the egress safety openings is determined according to the first shortest time length and the third shortest time length corresponding to each egress safety opening, that is, it is determined which egress safety opening is the optimal egress safety (i.e., the first optimal egress safety) corresponding to the to-be-evacuated area, and each to-be-evacuated area may determine to obtain at least one first optimal egress safety. And taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
It should be noted that, in the case that the shortest path from the area to be evacuated to the first optimal security exit does not pass through the fire area, the shortest path from the area to be evacuated to the first optimal security exit may be used as the first evacuation path; in the case that the shortest path from the area to be evacuated to the first optimal security exit passes through the fire area, the other paths from the area to be evacuated to the first optimal security exit, which do not pass through the fire area, may be selected as the first evacuation path.
Specifically, for each fire exit in the target building, if the first minimum time period required to reach the fire exit from the area to be evacuated is less than the third minimum time period required for the fire to spread to the fire exit, the fire exit is determined to be the first optimal fire exit. It will be appreciated that for a fire exit, if the first minimum length of time for reaching the fire exit from the area to be evacuated is less than the third minimum length of time for the fire to propagate to the fire exit, which means that the time required for the person to evacuate from the area to be evacuated to the fire exit is shorter than the time required for the fire to propagate to the fire exit, i.e. the speed of the person to evacuate from the area to be evacuated to the fire exit is faster than the speed of the fire to propagate to the fire exit, then the fire exit may be used as the first optimal fire exit for the area to be evacuated.
It should be noted that, for the area to be evacuated, the following special cases may exist: no matter which exit is safe, the first shortest time from the area to be evacuated to the exit is longer than the third shortest time from the spread of the fire to the exit, namely, the speed of people evacuating to any exit from the area to be evacuated is slower than the speed from the spread of the fire to the exit; the exit closest to the area to be evacuated is then selected as the first optimal exit.
Step S104: and determining at least one second optimal safety exit corresponding to the fire area from each safety exit by using the second shortest time and the third shortest time, and taking the shortest path from the fire area to the second optimal safety exit as a second evacuation path.
In the process of implementing step S104 specifically, at least one second optimal safety exit corresponding to the fire area is determined from all the safety exits by using the second shortest time length and the third shortest time length corresponding to each safety exit, that is, it is determined which safety exit is the optimal safety exit corresponding to the fire area (that is, the second optimal safety exit), and each fire area may determine to obtain at least one second optimal safety exit. And taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
Specifically, for each of the fire exits in the target building, the fire exit is determined to be a second optimal fire exit if a second minimum length of time required to reach the fire exit from the fire zone is less than a third minimum length of time required for the fire to spread to the fire exit. It will be appreciated that for a fire exit, if the second minimum length of time to reach the exit from the fire zone is less than the third minimum length of time for the fire to spread to the exit, indicating that the time required for personnel to evacuate from the fire zone to the exit is less than the time required for the fire to spread to the exit, i.e. personnel are evacuated from the fire zone to the exit faster than the fire spreads to the exit, then the exit may be used as the second most optimal exit for the fire zone.
It should be noted that, for fire areas, the following special cases may exist: in any case, the second shortest time from the fire area to the safety exit is longer than the third shortest time from the fire spreading to the safety exit, namely, the speed of people evacuating from the fire area to any safety exit is slower than the speed of the fire spreading to the safety exit; the exit closest to the fire zone is then selected as the second most optimal exit.
Step S105: and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path.
It should be noted that the indication direction of the emergency evacuation indicator light is one-way or two-way, and the indication direction of the emergency evacuation indicator light is used for guiding people to evacuate in which direction. Under the condition that the indication direction of the emergency evacuation indicator lamp is unidirectional, people can evacuate towards a certain direction according to the indication direction of the emergency evacuation indicator lamp; under the condition that the indication direction of the emergency evacuation indicator lamp is bidirectional, people can evacuate towards any direction of the two directions according to the indication direction of the emergency evacuation indicator lamp.
For example: assuming that the indication direction of the emergency evacuation indicator lamp is a left direction (the left direction is relatively speaking), the person can be evacuated to the left according to the indication direction of the emergency evacuation indicator lamp. And assuming that the indication direction of the emergency evacuation indicator lamp is bidirectional (left direction and right direction), people can evacuate towards the left side or towards the right side according to the indication direction of the emergency evacuation indicator lamp.
That is, it is possible to guide a person to evacuate in which direction by controlling the indication direction of the emergency evacuation indicator lamp. For better explaining the principle of the emergency evacuation indicator light, please refer to fig. 2, and fig. 2 is a schematic diagram of the emergency evacuation indicator light.
As in fig. 2, the emergency evacuation indicator light may display an indication direction for indicating left traffic, for indicating right traffic, or for indicating two-way traffic; the emergency evacuation indicator lamp comprises: the indicating lamps correspond to different indicating directions; the indicator light corresponding to the indication direction indicating the left-hand traffic is the indicator light 100, the indicator light corresponding to the indication direction indicating the right-hand traffic is the indicator light 200, and the indicator light corresponding to the indication direction indicating the two-way traffic is the indicator light 300. In the case where a fire has not occurred, the indicator lamps 100 and 200 are not turned on, and only the indicator lamp 300 is turned on at this time. In case of fire, if it is necessary to guide people to pass to the left (the directions in this example are all relative directions), the indicator lamp 100 is turned on; if the person needs to be guided to pass right, the indicator lamp 200 is lightened; if it is necessary to guide the person to pass left or right, the indicator lamp 300 is turned on. It should be noted that fig. 2 is only used for illustrating the operation principle of the emergency evacuation indicator light.
In the process of specifically implementing the step S105, controlling the indication direction of an emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path; and controlling the indicating direction of an emergency evacuation indicating lamp corresponding to the fire area according to the second evacuation path.
It can be understood that the emergency evacuation indicator lights corresponding to the respective areas to be evacuated may be disposed on the wall of the target building or may be disposed on the ground of the target building, and the locations of the emergency evacuation indicator lights are not specifically limited herein. Each emergency evacuation indicator lamp in the target building is connected into the intelligent fire-fighting system in advance, and the control signal is sent to the emergency evacuation indicator lamp in a wireless or wired mode, so that the indicating direction of the emergency evacuation indicator lamp can be controlled.
In some embodiments, the indication direction of the emergency evacuation indicator light corresponding to the area to be evacuated is used for: guiding to a first optimal safe exit corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to a second optimal safe exit corresponding to the second evacuation path.
That is to say, for the area to be evacuated, the emergency evacuation indicator lamp corresponding to the area to be evacuated is controlled to display the corresponding indication direction, and the indication direction displayed by the emergency evacuation indicator lamp is used for: and guiding the personnel in the area to be evacuated to a first optimal safe exit corresponding to the area to be evacuated.
For a fire area, controlling an emergency evacuation indicator lamp corresponding to the fire area to display a corresponding indication direction, wherein the indication direction displayed by the emergency evacuation indicator lamp is used for: and guiding personnel in the fire area to a second optimal safety exit corresponding to the fire area.
In the embodiment of the invention, when a fire disaster occurs, an optimal evacuation path can be dynamically planned according to the actual fire condition, and the indication direction of the emergency evacuation indicator lamp is controlled according to the planned evacuation path to guide the evacuation personnel to evacuate, so that the emergency evacuation indicator lamp is not limited to a fixed evacuation path any more, and the potential safety hazard in the personnel evacuation process is reduced.
To better explain the contents of the above steps of fig. 1, the description is made by way of example with reference to the contents shown in fig. 3 and 4. In fig. 3 and 4, the target building includes: conference room a, rooms 1 to 25, toilets 1 and 2, security exits 1 and 2; wherein the conference room, each room and each toilet can be regarded as one area.
Referring to fig. 3, when a fire disaster does not occur in the target building, the indication directions of the emergency evacuation indicator lights corresponding to the respective areas such as the conference room, each toilet, and the like are all bidirectional, that is, the indicator lights for indicating bidirectional traffic among all the emergency evacuation indicator lights are turned on. The evacuation paths of the directional travel which are illuminated by the respective emergency evacuation lights can be seen in the arrow directions in fig. 3.
Referring to fig. 4, when a fire breaks out in the target building, in fig. 4, a fire breaks out in a room 12, in which case the room 12 is a fire area, and a conference room, a toilet, and other rooms (except the room 12) are areas to be evacuated. Determining a first evacuation path corresponding to an area to be evacuated and a second evacuation path corresponding to a fire area by the method for determining evacuation paths given in the above fig. 1; and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path. The evacuation paths of the directional travel which are illuminated by the respective emergency evacuation lights can be seen in the arrow directions in fig. 4.
Taking the conference room a (i.e. the area to be evacuated) in fig. 4 as an example, how to determine the first optimal security exit corresponding to the conference room a is explained; assuming that the shortest distance of the conference room a from the security exit 1 is S1, the preset evacuation speed of people is V1, the shortest distance of the room 12 (fire area) from the security exit 1 is S2, and the fire spread speed is V2. The first minimum time period t1 required for reaching security exit 1 from conference room a is S1/V1, and the third minimum time period t2 required for the fire to spread to security exit 1 is S2/V2. If t1 is greater than or equal to t2, then security exit 1 cannot be selected as the first optimal security exit corresponding to conference room a, and it can be determined whether security exit 2 can be the first optimal security exit corresponding to conference room a in the manner described above. If t1 is less than t2, then security exit 1 may be selected as the first optimal security exit for conference room A.
Corresponding to the method for determining an evacuation path provided by the above-mentioned embodiment of the present invention, referring to fig. 5, an embodiment of the present invention further provides a structural block diagram of an intelligent fire fighting system, where the intelligent fire fighting system includes: a first determination unit 501, a second determination unit 502, a first processing unit 503, a second processing unit 504, and a control unit 505;
a first determining unit 501 for determining a fire area in the target building where a fire occurs and determining an area to be evacuated in the target building where no fire occurs, according to the source of the fire signal, in case that the fire signal is detected.
A second determining unit 502 for determining, for each fire exit in the target building, a first minimum length of time required to reach the fire exit from the area to be evacuated, a second minimum length of time required to reach the fire exit from the area of fire, and a third minimum length of time required for the fire to spread to the fire exit.
The first processing unit 503 is configured to determine, from the respective emergency exits, at least one first optimal emergency exit corresponding to the area to be evacuated by using the first shortest time length and the third shortest time length, and use a shortest path from the area to be evacuated to the first optimal emergency exit as a first evacuation path.
In a specific implementation, the first processing unit 503 is specifically configured to: for each safety exit in the target building, if the first shortest time required for reaching the safety exit from the area to be evacuated is less than the third shortest time required for the fire to spread to the safety exit, determining the safety exit as a first optimal safety exit; taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path,
the second processing unit 504 is configured to determine, from the respective security exits, at least one second optimal security exit corresponding to the fire area by using the second shortest time length and the third shortest time length, and use a shortest path from the fire area to the second optimal security exit as a second evacuation path.
In a specific implementation, the second processing unit 504 is specifically configured to: for each safety exit in the target building, if the second shortest time required for reaching the safety exit from the fire area is less than the third shortest time required for the fire to spread to the safety exit, determining the safety exit as a second optimal safety exit; and taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
And the control unit 505 is used for controlling the indication direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path and controlling the indication direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path, wherein the indication direction of the emergency evacuation indicator lamp is one-way or two-way.
In some embodiments, the indication direction of the emergency evacuation indicator light corresponding to the area to be evacuated is used for: guiding to the first optimal safe exit corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to a second optimal safe exit corresponding to the second evacuation path.
In the embodiment of the invention, when a fire disaster occurs, an optimal evacuation path can be dynamically planned according to the actual fire condition, and the indication direction of the emergency evacuation indicator lamp is controlled according to the planned evacuation path to guide the evacuation personnel to evacuate, so that the emergency evacuation indicator lamp is not limited to a fixed evacuation path any more, and the potential safety hazard in the personnel evacuation process is reduced.
Preferably, in conjunction with what is shown in fig. 5, the second determining unit 502 for determining the third minimum length of time required for the fire to spread to the safe exit includes: the analysis subunit and the determination subunit, and the execution principle of each subunit is as follows:
and the analysis subunit is used for analyzing and obtaining the fire spreading direction and the fire spreading speed based on the structural data and the decorative material data of the target building.
And the determining subunit is used for determining a third shortest time required for the fire to spread to the safe exit according to the fire spreading direction and the fire spreading speed.
In summary, the embodiments of the present invention provide a method for determining an evacuation path and an intelligent fire protection system, which determine a fire area and an area to be evacuated when a fire signal is detected. And respectively determining a first optimal safety exit corresponding to the area to be evacuated and a second optimal safety exit corresponding to the fire area based on the condition of fire spread. And taking the shortest path from the area to be evacuated to the first optimal safety exit as a first evacuation path, and taking the shortest path from the area with the fire disaster to the second optimal safety exit as a second evacuation path. And controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path. The optimal evacuation path can be dynamically planned according to the actual fire, and the indication direction of the emergency evacuation indicator lamp is controlled according to the planned evacuation path to guide the evacuation personnel to evacuate, so that the potential safety hazard in the personnel evacuation process is reduced.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of determining an evacuation path, the method comprising:
under the condition that a fire signal is detected, determining a fire area where a fire disaster occurs in a target building according to the source of the fire signal, and determining an area to be evacuated, where the fire disaster does not occur, in the target building;
for each fire exit in the target building, determining a first minimum length of time required to reach the fire exit from the area to be evacuated, and determining a second minimum length of time required to reach the fire exit from the area of fire, and determining a third minimum length of time required for the fire to spread to the fire exit;
determining at least one first optimal safe exit corresponding to the area to be evacuated from each safe exit by using the first shortest time and the third shortest time, and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path;
determining at least one second optimal safety exit corresponding to the fire area from each safety exit by using the second shortest time and the third shortest time, and taking the shortest path from the fire area to the second optimal safety exit as a second evacuation path;
and controlling the indicating direction of the emergency evacuation indicating lamp corresponding to the area to be evacuated according to the first evacuation path, and controlling the indicating direction of the emergency evacuation indicating lamp corresponding to the fire area according to the second evacuation path, wherein the indicating direction of the emergency evacuation indicating lamp is unidirectional or bidirectional.
2. The method of claim 1, wherein determining a third minimum length of time required for the fire to propagate to the fire exit comprises:
analyzing and obtaining a fire spreading direction and a fire spreading speed based on the structural data and the decorative material data of the target building;
and determining a third shortest time required for the fire to spread to the safety exit according to the fire spreading direction and the fire spreading speed.
3. The method according to claim 1, wherein the step of determining at least one first optimal safe exit corresponding to the area to be evacuated from each safe exit by using the first shortest time length and the third shortest time length, and using the shortest path from the area to be evacuated to the first optimal safe exit as the first evacuation path comprises:
for each safe exit in the target building, if the first shortest time length required for reaching the safe exit from the area to be evacuated is less than the third shortest time length required for the fire to spread to the safe exit, determining the safe exit as a first optimal safe exit;
and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
4. The method of claim 1, wherein determining at least one second optimal fire exit corresponding to the fire area from the respective fire exits using the second shortest time duration and the third shortest time duration, and using a shortest path from the fire area to the second optimal fire exit as a second evacuation path comprises:
for each safe exit in the target building, if a second shortest time period required for reaching the safe exit from the fire area is less than a third shortest time period required for the fire to spread to the safe exit, determining the safe exit as a second optimal safe exit;
and taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
5. The method according to claim 1, characterized in that the indication direction of the emergency evacuation indicator light corresponding to the area to be evacuated is used for: directing access to the first optimal egress safety opening corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to the second optimal safe exit corresponding to the second evacuation path.
6. An intelligent fire fighting system, characterized in that, intelligent fire fighting system includes:
a first determination unit for determining a fire area in which a fire occurs in a target building and determining an area to be evacuated in which a fire does not occur in the target building, according to a source of the fire signal, in case that the fire signal is detected;
a second determination unit for determining, for each fire exit in the target building, a first minimum time period required to reach the fire exit from the area to be evacuated, a second minimum time period required to reach the fire exit from the area of fire, and a third minimum time period required for the fire to spread to the fire exit;
the first processing unit is used for determining at least one first optimal safety exit corresponding to the area to be evacuated from each safety exit by using the first shortest time and the third shortest time, and taking the shortest path from the area to be evacuated to the first optimal safety exit as a first evacuation path;
the second processing unit is used for determining at least one second optimal safety exit corresponding to the fire area from each safety exit by using the second shortest time and the third shortest time, and taking the shortest path from the fire area to the second optimal safety exit as a second evacuation path;
and the control unit is used for controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the area to be evacuated according to the first evacuation path and controlling the indicating direction of the emergency evacuation indicator lamp corresponding to the fire area according to the second evacuation path, wherein the indicating direction of the emergency evacuation indicator lamp is unidirectional or bidirectional.
7. The intelligent fire fighting system of claim 6, wherein the second determining unit for determining a third minimum length of time required for the fire to spread to the fire exit includes:
an analysis subunit for analyzing the fire spreading direction and the fire spreading speed based on the structural data and the decorative material data of the target building;
a determining subunit configured to determine a third minimum time period required for the fire to spread to the safety exit, from the fire spreading direction and the fire spreading speed.
8. The intelligent fire fighting system according to claim 6, wherein the first processing unit is specifically configured to: for each safe exit in the target building, if the first shortest time length required for reaching the safe exit from the area to be evacuated is less than the third shortest time length required for the fire to spread to the safe exit, determining the safe exit as a first optimal safe exit; and taking the shortest path from the area to be evacuated to the first optimal safe exit as a first evacuation path.
9. The intelligent fire fighting system according to claim 6, wherein the second processing unit is specifically configured to: for each safe exit in the target building, if a second shortest time period required for reaching the safe exit from the fire area is less than a third shortest time period required for the fire to spread to the safe exit, determining the safe exit as a second optimal safe exit; and taking the shortest path from the fire area to the second optimal safe exit as a second evacuation path.
10. The intelligent fire fighting system according to claim 6, wherein the indication direction of the emergency evacuation indicator light corresponding to the area to be evacuated is used for: directing access to the first optimal egress safety opening corresponding to the first evacuation path; the indication direction of the emergency evacuation indicator lamp corresponding to the fire area is used for: and guiding to the second optimal safe exit corresponding to the second evacuation path.
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