JP2019057241A - Disaster prevention system - Google Patents

Abstract

To realize a smooth evacuation when an event of a fire or other abnormality occurs.SOLUTION: An abnormality information receiving unit of a supporting server receives abnormality information for indicating an occurrence of abnormality or a possibility of an occurrence of abnormality in a building; when the abnormality information is received by the abnormality information receiving unit, a moving speed identification unit identifies a moving speed of a portable terminal that moves downstairs for each of the plurality of floors of the building; and a congestion determination unit determines whether each of the plurality of floors is congested on the basis of the moving speed identified by the moving speed identification unit. An evacuation guidance control unit of an emergency broadcast facility executes an evacuation guidance after, with respect to one floor of the plurality of floors, the floors below the one floor are determined to be not congested by the congestion determination unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for assisting evacuation of residents when an abnormality such as a fire occurs.

  Conventionally, a disaster prevention system for encouraging residents to evacuate in the event of a fire is known. For example, Patent Document 1 describes a disaster prevention monitoring system equipped with an emergency broadcasting facility that automatically performs emergency broadcasting on a fire occurrence floor and an immediately upper floor in conjunction with a fire.

JP 2004-310629 A

  Conventionally, when conducting evacuation guidance in high-rise buildings, fire broadcasts are first made on the fire floor and directly above, and then fire broadcasts are simultaneously broadcast to other floors after a predetermined hold time. It was. However, this evacuation guidance method has a problem that the evacuation is delayed especially in the evacuation stairs near the fire floor and the evacuation is delayed.

  The present invention has been made in view of such circumstances, and an object thereof is to realize smooth evacuation when an abnormality such as a fire occurs.

  In order to solve the above-described problem, the disaster prevention system according to the present invention includes a moving speed specifying unit that specifies a moving speed of a mobile terminal that moves downstairs for each of a plurality of floors of a building, and each of the plurality of floors. A congestion determination unit that determines whether or not the vehicle is congested based on the movement speed specified by the movement speed specifying unit, and one of the plurality of floors when evacuation is required And an evacuation guidance control unit that executes evacuation guidance after it is determined that the floor below the one floor is not crowded by the congestion judgment unit.

  According to the disaster prevention system according to the present invention, smooth evacuation can be realized when an abnormality such as a fire occurs.

It is a figure which shows an example of a structure of the disaster prevention system. It is a figure which shows an example of a structure of the fire receiver. 3 is a diagram illustrating an example of a configuration of a mobile terminal 6. FIG. It is a figure which shows an example of a structure of the support server. It is a figure which shows an example of the member candidate information database 721. It is a figure which shows an example of the movement information database 724. It is a figure which shows an example of the congestion information database 725. FIG. It is a figure which shows an example of a structure of the emergency broadcast equipment. It is a sequence diagram which shows an example of the organization operation | movement of a self-defense fire brigade. It is a flowchart which shows an example of congestion determination operation | movement. It is a flowchart which shows an example of fire broadcast operation | movement. It is a flowchart which shows an example of alarm operation | movement.

1. Embodiment 1-1. Configuration of Disaster Prevention System 1 FIG. 1 is a diagram illustrating an example of a configuration of a disaster prevention system 1 according to an embodiment of the present invention. The disaster prevention system 1 includes an automatic fire alarm facility 2 (hereinafter, “self-fire alarm facility 2”) and a disaster prevention support system 3.

1-1-1. Structure of the self-reporting equipment 2 The self-reporting equipment 2 is installed in a building which is a fire prevention object. Here, the building is, for example, an apartment building such as an office building, a commercial facility, a hotel, or an apartment. The self-reporting equipment 2 includes fire detectors 4 installed at various locations of the building and fire receivers 5 installed at the disaster prevention center of the building. The fire detector 4 and the fire receiver 5 are connected via a signal line. The fire receiver 5 is also connected to the support server 7 and the emergency broadcasting facility 9 directly or via the communication line 10. Here, the communication line 10 is a communication network such as the Internet or a wireless LAN. The self-reporting equipment 2 may be a P-type equipment or an R-type equipment. In the following description, it is assumed that the self-reporting equipment 2 is an R-type equipment.

1-1-1-1. Configuration of Fire Detector 4 The fire detector 4 is an example of a fire detection means, for example, a photoelectric smoke detector. Although not shown, the fire detector 4 detects a fire by detecting smoke generated at the time of a fire, and a fire detection signal including an address which is identification information when the fire detection unit detects a fire. Is transmitted to the fire receiver 5. As a modification, the fire detector 4 may be another type of detector such as a heat detector or a flame detector.

1-1-1-2. Configuration of Fire Receiver 5 FIG. 2 is a diagram illustrating an example of the configuration of the fire receiver 5. The fire receiver 5 includes a control unit 51, a storage unit 52, a display unit 53, an operation input unit 54, a first communication unit 55, and a second communication unit 56.

  The control unit 51 includes an arithmetic processing unit such as a CPU and a volatile memory such as a RAM, and executes a program stored in the storage unit 52. The storage unit 52 is a storage device such as an HDD or a flash memory, and stores a program executed by the control unit 51 and a sensor database 521. Although not shown, the sensor database 521 stores the district number and district name of the installation location of the detector in association with the address of the fire detector 4. As a modification, the storage unit 52 may be an external storage device. Next, the display unit 53 is a display device such as a liquid crystal display or an organic EL display. The operation input unit 54 is an input device such as an operation button or a touch panel. The first communication unit 55 is a communication interface for communicating with the fire detector 4 via a signal line. The second communication unit 56 is a communication interface for performing communication with the support server 7 and the emergency broadcast facility 9 via the communication line 10.

  The control unit 51 of the fire receiver 5 implements the functions of a fire detection signal reception unit 511, a fire determination unit 512, and a fire information transmission unit 513 by executing a program stored in the storage unit 52.

  When the fire detection signal receiving unit 511 receives the fire detection signal from the fire detector 4, the fire detection signal reception unit 511 refers to the sensor database 521 and identifies the installation location corresponding to the address included in the signal. In addition, the fire detection signal receiving unit 511 receives a fire signal from a transmitter (not shown) via a signal line.

  The fire determination unit 512 determines the occurrence of a fire based on the signal received by the fire detection signal reception unit 511. Specifically, when a fire detection signal is received from the second fire detector 4 and when a certain time has elapsed since the fire detection signal is received from the first fire detector 4 When a fire signal is received from the machine, the occurrence of a fire is determined. The fire determination unit 512 also determines the occurrence of a fire when a fire confirmation operation is performed using the operation input unit 54.

  When the fire determination unit 512 determines that a fire has occurred, the fire information transmission unit 513 transmits a fire confirmation signal for notifying the confirmation of the fire to the support server 7 and the emergency broadcast facility 9. This fire confirmation signal includes information on the place where the fire occurred.

1-1-2. Configuration of Disaster Prevention Support System 3 The disaster prevention support system 3 includes a plurality of portable terminals 6, a support server 7, a plurality of speakers 8, and an emergency broadcasting facility 9. The portable terminal 6 and the support server 7 are connected via a communication line 10. The speaker 8 and the emergency broadcasting facility 9 are connected via a signal line. As a modification, the speaker 8 and the emergency broadcast facility 9 may be connected via a wireless communication line.

1-1-2-1. Configuration of Mobile Terminal 6 FIG. 3 is a diagram illustrating an example of the configuration of the mobile terminal 6. The portable terminal 6 is a terminal that is carried by a resident of a building that is a fire prevention object. Specifically, it is a smart phone, a mobile phone, a tablet terminal, or a wearable terminal. The mobile terminal 6 includes a control unit 61, a storage unit 62, a display unit 63, an operation input unit 64, a communication unit 65, an acceleration sensor 66, and an atmospheric pressure sensor 67.

  The control unit 61 includes an arithmetic processing unit such as a CPU and a volatile memory such as a RAM, and executes a program stored in the storage unit 62. The storage unit 62 is a storage device such as a flash memory, and stores a program executed by the control unit 61. The display unit 63 is a display device such as a liquid crystal display or an organic EL display. The operation input unit 64 is an input device such as an operation button or a touch panel. The communication unit 65 is a communication interface for communicating with the support server 7 via the communication line 10. The acceleration sensor 66 is, for example, a three-axis acceleration sensor, and detects acceleration of three-axis components of the mobile terminal 6 in the left-right direction (X-axis direction), the up-down direction (Y-axis direction), and the front-back direction (Z-axis direction). Then, acceleration information indicating the detected acceleration is generated. The atmospheric pressure sensor 67 detects atmospheric pressure around the mobile terminal 6 and generates atmospheric pressure information indicating the detected atmospheric pressure.

  The control unit 61 implements the functions of an information receiving unit 611, a display control unit 612, and an information transmitting unit 613 by executing a program stored in the storage unit 62.

  The information receiving unit 611 receives role information and movement information request from the support server 7. Such information will be described later.

  The display control unit 612 causes the display unit 63 to display role information received by the information receiving unit 611.

  When the information reception unit 611 receives the movement information request, the information transmission unit 613 returns the movement information to the support server 7. This movement information includes acceleration information generated by the acceleration sensor 66, atmospheric pressure information generated by the atmospheric pressure sensor 67, and a member ID.

1-1-2-2. Configuration of Support Server 7 FIG. 4 is a diagram illustrating an example of the configuration of the support server 7. The support server 7 is a computer device for managing the congestion status of each floor of a building that is a fire prevention object. The support server 7 includes a control unit 71, a storage unit 72, and a communication unit 73.

  The control unit 71 includes an arithmetic processing unit such as a CPU and a volatile memory such as a RAM, and executes a program stored in the storage unit 72.

  The storage unit 72 is a storage device such as an HDD or a flash memory, and stores a program executed by the control unit 71. The storage unit 72 also stores a member candidate information database 721, a member information database 722, a barometric pressure information database 723, a movement information database 724, and a congestion information database 725. FIG. 5 is a diagram illustrating an example of the member candidate information database 721. The member candidate information database 721 is a database that stores member IDs of member candidates in association with each role of the self-defense fire brigade. Specifically, it corresponds to the role of the self-defense fire brigade, the number of members selected for the role, the priority of the role when selecting the member, and the member ID of the candidate member selected for the role. Store with attachments. Here, the member ID is, for example, the name of the member candidate or the terminal ID of the portable terminal 6 carried by the member candidate.

  Here, the self-defense fire brigade is a self-defense organization composed of residents of a building that is a fire prevention object, and is an organization for performing initial responses to abnormalities occurring in the building. More specifically, it is an organization that is set up to ensure the safety of building users by smoothly performing initial responses and emergency measures in the event of a disaster such as a fire or earthquake. Self-defense fire brigade members belong to the headquarters and district troops, and each member's role is, for example, an initial fire fighter, an evacuation guide, a safety guard, a reporter, an emergency rescue, an emergency take-off, There are commanders.

  Next, the member information database 722 is a database that stores information on each member of the organized self-defense fire brigade. Specifically, although not shown, the member ID, the role assigned to the member, and the floor in charge of the member are stored in association with each other. Although not shown, the atmospheric pressure information database 723 is a database that stores a range of atmospheric pressure values measured in advance for each floor of a building that is a fire prevention object. This database is referred to in order to identify the corresponding floor from the atmospheric pressure value. FIG. 6 is a diagram illustrating an example of the movement information database 724. The movement information database 724 is a database that manages the movement status of each member of the organized self-defense fire brigade. Specifically, the member ID, the moving speed, information indicating whether or not the vehicle is moving downstairs, and the stay floor are stored in association with each other. FIG. 7 is a diagram illustrating an example of the congestion information database 725. The congestion information database 725 is a database that manages the congestion status of each floor (more specifically, the evacuation stairs on each floor) of a building that is a fire prevention object. Here, the congestion status is the degree of congestion of evacuees. As a modification, the storage unit 72 may be an external storage device.

  The communication unit 73 is a communication interface for communicating with the fire receiver 5 and the portable terminal 6 via the communication line 10.

  The control unit 71 of the support server 7 executes the program stored in the storage unit 72, thereby executing the abnormal information receiving unit 711, the knitting unit 712, the role information transmitting unit 713, the movement information acquiring unit 714, Functions of a determination unit 715, a moving speed specification unit 716, a stay floor specification unit 717, a congestion determination unit 718, and a congestion information transmission unit 719 are realized.

  The abnormality information receiving unit 711 receives abnormality information indicating the occurrence of an abnormality in a building that is a fire prevention object. Specifically, a fire confirmation signal is received from the fire receiver 5.

  When the fire confirmation signal is received by the abnormality information receiving unit 711, the knitting unit 712 forms a self-defense fire brigade with reference to the member candidate information database 721. Specifically, in the member candidate information database 721, in order from the role with the highest priority, the member candidates with the highest priority are selected as members until the constant is satisfied. The member ID of the selected member is stored in the member information database 722 in association with the assigned role and the assigned floor.

  The role information transmission unit 713 transmits role information for notifying the assigned role and the floor in charge to the mobile terminal 6 carried by the member selected by the organization unit 712.

  The movement information acquisition unit 714 periodically acquires the movement information of the portable terminal 6 carried by each member (except for the initial fire extinguisher and the commander on the fire floor) when the self-defense fire brigade is organized by the organization unit 712. To do. Specifically, with reference to the member information database 722, members other than the initial fire extinguisher and the commander on the fire floor are identified, and the movement information that requests the movement information to the portable terminal 6 carried by the identified member Send a request. Then, the mobile information is received as a response to the transmitted mobile information request. Here, the reason for excluding the initial fire extinguisher and the commander on the fire floor is that these firemen stay on the fire floor and correspond to the initial fire extinguishing.

  Based on the acceleration information included in the movement information acquired by the movement information acquisition unit 714, the descent determination unit 715 determines whether the mobile terminal 6 that generated the acceleration information is moving downstairs. Specifically, it is determined whether or not the mobile terminal 6 is moving downstairs based on whether or not the gravitational acceleration is greater than a predetermined threshold. In general, when a person goes down the stairs, the acceleration in the gravitational direction (in other words, the impact received when the foot lands) tends to be larger than when walking on a flat ground. This is because it is possible to determine whether or not the vehicle is moving downstairs (for example, Japanese Patent Application Laid-Open No. 2008-154878). Or the descent | fall determination part 715 determines whether the portable terminal 6 is moving downstairs based on whether the angle of the vector of a gravity axis inclines in the minus direction more than fixed. This is because when a person goes down the stairs, the gravitational axis vector angle tends to incline in a negative direction for a certain amount (in other words, the body tilts backward compared to walking on a flat ground). It is because it can be determined whether it is moving downstairs by determining whether the angle of the vector is inclined in the minus direction more than a certain value (for example, JP 2008-173248 A). When determining whether or not the mobile terminal 6 is moving downstairs, the descent determining unit 715 stores the determination result in the movement information database 724 in association with the member ID included in the movement information.

  The movement speed specifying unit 716 specifies the movement speed of the mobile terminal 6 for each of the plurality of floors of the building that is the fire prevention object after the abnormality information is received by the abnormality information receiving unit 911. At that time, the moving speed specifying unit 716 specifies the moving speed of the mobile terminal 6 that generated the acceleration information based on the acceleration information included in the moving information acquired by the moving information acquiring unit 714. More specifically, the moving speed is specified by multiplying the number of steps per unit time obtained from the acceleration information by a predetermined stride (for example, JP 2010-165088 A). Alternatively, the moving speed is specified by integrating the acceleration in the moving direction (for example, JP-A-2015-62654). When the movement speed is specified, the movement speed identification unit 716 stores the movement speed in the movement information database 724 in association with the member ID included in the movement information.

  The stay floor specifying unit 717 specifies the floor on which the mobile terminal 6 stays based on the atmospheric pressure value detected by the atmospheric pressure sensor 67 included in the mobile terminal 6. Specifically, with reference to the atmospheric pressure information included in the movement information acquired by the movement information acquisition unit 714 and the atmospheric pressure information database 723, the stay floor of the mobile terminal 6 that generated the atmospheric pressure information is specified. When the stay floor is specified, it is stored in the movement information database 724 in association with the member ID included in the movement information. That is, the movement information is stored in the movement information database 724 in association with the result of the descent determination of the mobile terminal 6 that generated the movement information and the movement speed. At that time, the stay floor specifying unit 717 may correct the range of the atmospheric pressure value stored in the atmospheric pressure information database 723 according to the temperature at that time.

  The congestion determination unit 718 determines whether or not each of the plurality of floors of the building that is the fire prevention object is congested based on the moving speed specified by the moving speed specifying unit 716. At that time, the congestion determination unit 718 refers to the movement information database 724, calculates the average value of the movement speed (limited to the movement speed at the time of descent) for each floor, and is based on the calculated average value. It is determined whether or not. When determining the presence or absence of congestion, if the average value of the moving speed is slower than 0.6 m / sec, it is determined that the area is congested. On the other hand, when the average value of the moving speed is 0.6 m / second or more, it is determined that there is no congestion. When the presence / absence of congestion is determined, the determination result is stored in the congestion information database 725 in association with the determination target floor. This determination criterion is merely an example, and the threshold value may be set as appropriate.

  The congestion information transmission unit 719 transmits the congestion information of each floor stored in the congestion information database 725 to the emergency broadcast facility 9 every time a congestion determination operation described later is executed.

1-1-2-3. Configuration of Speaker 8 The speaker 8 is installed in various places of a building that is a fire prevention object. The speaker 8 receives a voice message from the emergency broadcasting facility 9 and outputs the voice message.

1-1-2-4. Configuration of Emergency Broadcasting Facility 9 FIG. 8 is a diagram illustrating an example of the configuration of the emergency broadcasting facility 9. The emergency broadcast facility 9 is a device for broadcasting a fire broadcast message via the speaker 8 when a fire has occurred in a building that is a fire prevention object and that informs the occurrence of the fire and prompts evacuation of the residents. It is. The emergency broadcast facility 9 includes a control unit 91, a storage unit 92, a first communication unit 93, and a second communication unit 94.

  The control unit 91 includes an arithmetic processing unit such as a CPU and a volatile memory such as a RAM, and executes a program stored in the storage unit 92.

  The storage unit 92 is a storage device such as an HDD or a flash memory, and stores a program executed by the control unit 91. In addition, the storage unit 92 stores a congestion information database 921 and a speaker information database 922. The congestion information database 921 is a database that manages the congestion status of each floor (more specifically, the evacuation stairs on each floor) of a building that is a fire prevention object. Since the data structure of the congestion information database 921 is the same as that of the congestion information database 725 provided in the support server 7, detailed description thereof is omitted. Although not shown, the speaker information database 922 stores an installation floor of the speaker in association with an address that is identification information of the speaker 8.

  The first communication unit 93 is a communication interface for communicating with the fire receiver 5 and the support server 7 via the communication line 10. The second communication unit 94 is a communication interface for performing communication with the speaker 8 via a signal line.

  The control unit 91 of the emergency broadcast facility 9 implements the functions of the abnormal information receiving unit 911, the evacuation guidance control unit 912, and the congestion information receiving unit 913 by executing a program stored in the storage unit 92.

  The abnormality information receiving unit 911 receives abnormality information indicating the occurrence of an abnormality in a building that is a fire prevention object. Specifically, a fire confirmation signal is received from the fire receiver 5.

  When the fire confirmation signal is received by the abnormality information receiving unit 911 (that is, when evacuation is necessary), the evacuation guidance control unit 912 is installed on the fire floor and immediately above it with reference to the speaker information database 922. The fire broadcast message is output as audio from the speaker 8. Here, the fire broadcast message is, for example, a message “fire, fire, fire has occurred. Please evacuate calmly”. In addition, after a fire broadcast to the fire floor and directly above the floor, the congestion determination unit 718 is not congested with respect to one floor among the plurality of floors of the building that is the fire prevention object. Evacuation guidance is executed after it is determined. At that time, even if it is determined that the lower floor is not congested, an evacuation guide will be executed if a predetermined hold time has elapsed after the fire broadcast to the fire floor and directly above the floor. . Here, the first floor is specifically the upper floor directly above, and the lower floor is specifically the fire floor and the upper floor. For the determination result by the congestion determination unit 718, the congestion information database 921 is referred to. The evacuation guidance is an audio output of a fire broadcast message from the speaker 8. When the fire broadcast to the upper floor is completed, the evacuation guidance control unit 912 refers to the speaker information database 922 and outputs a sound of the fire broadcast message from the speaker 8 installed on the lower floor.

  When the congestion information receiving unit 913 receives the congestion information from the support server 7, the congestion information receiving unit 913 updates the congestion information database 921 with the received congestion information. That is, the congestion information database 725 of the support server 7 and the data of the congestion information database 921 are synchronized.

1-2. Operation of Disaster Prevention System 1 The operation of the disaster prevention system 1 will be described. Specifically, the organization operation of the self-defense fire brigade, the congestion determination operation, and the fire broadcast operation will be described.

1-2-1. FIG. 9 is a sequence diagram showing an example of the organization operation of the self-defense fire brigade. This operation is executed when the fire determination unit 512 of the fire receiver 5 determines the occurrence of a fire.

When the fire determination unit 512 of the fire receiver 5 determines the occurrence of a fire, the fire information transmission unit 513 transmits a fire confirmation signal for notifying the confirmation of the fire to the support server 7 (Sa1). When the transmitted fire confirmation signal is received by the abnormality information receiving unit 711 of the support server 7, the organization unit 712 of the support server 7 organizes the self-defense fire brigade with reference to the member candidate information database 721 (Sa2). Specifically, in the member candidate information database 721, in order from the role with the highest priority, the member candidates with the highest priority are selected as members until the constant is satisfied. The member ID of the selected member is stored in the member information database 722 in association with the assigned role and the assigned floor. When the formation of the self-defense fire brigade is completed, the role information transmission unit 713 transmits role information for notifying the assigned role and the floor in charge to the portable terminal 6 carried by the selected member (Sa3). When the transmitted role information is received by the information receiving unit 611 of the mobile terminal 6, the display control unit 612 of the mobile terminal 6 displays the received role information on the display unit 63 in accordance with a user operation. (Sa4).
This completes the description of the organization operation of the self-defense fire brigade.

1-2-2. Congestion Determination Operation FIG. 10 is a flowchart illustrating an example of the congestion determination operation. This operation is executed at a predetermined cycle by the support server 7 after the formation of the self-defense fire brigade (Sa2).

The movement information acquisition unit 714 of the support server 7 refers to the member information database 722,
A member other than the initial fire extinguisher and the commander on the fire floor is specified (Sb1). When the member is specified, a movement information request for requesting movement information is transmitted to the portable terminal 6 carried by the member (Sb2). Then, the movement information is received as a response to the movement information request (Sb3).

  When the movement information is received, the descent determination unit 715 determines whether or not the mobile terminal 6 is moving downstairs based on the acceleration information included in the received movement information (Sb4). As an example, based on whether or not the acceleration in the gravitational direction is greater than a predetermined threshold value, it is determined whether or not the mobile terminal 6 is moving downstairs. As another example, it is determined whether or not the mobile terminal 6 is moving downstairs based on whether or not the angle of the gravity axis vector is tilted in the minus direction by a certain amount or more. When it is determined whether or not it is moving downstairs, the determination result is stored in the movement information database 724 in association with the member ID included in the received movement information.

  When the descent determination is completed, the moving speed specifying unit 716 next specifies the moving speed of the mobile terminal 6 based on the acceleration information included in the moving information received in step Sb3 (Sb5). As an example, the moving speed is specified by multiplying the number of steps per unit time obtained from the acceleration information by a predetermined stride. As another example, the moving speed is specified by integrating acceleration in the moving direction. When the movement speed is specified, it is stored in the movement information database 724 in association with the member ID included in the received movement information.

  When the moving speed is specified, the stay floor specifying unit 717 specifies the stay floor of the mobile terminal 6 with reference to the atmospheric pressure information included in the movement information received in step Sb3 and the atmospheric pressure information database 723 ( Sb6). When the stay floor is specified, it is stored in the movement information database 724 in association with the member ID included in the received movement information.

  When the stay floor is specified, the movement information acquisition unit 714 determines whether movement information has been acquired for all the members registered in the member information database 722 other than the initial firefighter and the commander of the fire floor. (Sb7). As a result of this determination, if movement information is not acquired for all members (NO in Sb7), the process returns to step Sb1, and if movement information is acquired for all members (YES in Sb7), Control goes to step Sb8.

The congestion determination unit 718 refers to the movement information database 724, calculates an average value of movement speed per predetermined time (limited to movement speed during descent) for each floor, and based on the calculated average value, congestion is determined. It is determined whether or not (Sb8). At that time, if the average value of the moving speed is slower than 0.6 m / sec, it is determined that the area is congested. If the average value of the moving speed is 0.6 m / sec or more, the area is congested. Judge that there is no. That is, it is determined whether or not the person is congested based on the moving speed of the person evacuating downward. When the presence / absence of congestion is determined, the determination result is stored in the congestion information database 725 in association with the determination target floor.
The above is the description of the congestion determination operation.

1-2-3. Fire Broadcast Operation FIG. 11 is a flowchart showing an example of fire broadcast operation. This operation is executed when the emergency broadcast facility 9 receives a fire confirmation signal from the fire receiver 5.

When the fire confirmation signal is received by the abnormality information receiving unit 911 of the emergency broadcast facility 9 (that is, when evacuation is required), the evacuation guidance control unit 912 of the emergency broadcast facility 9 refers to the speaker information database 922. Then, the fire broadcast message is output by voice from the fire floor and the speaker 8 installed immediately above the fire floor (Sc1). When a predetermined time elapses after the fire broadcast to the fire floor and directly above the floor, the evacuation guidance control unit 912 refers to the congestion information database 921 and determines whether the fire floor and the directly above floor are congested (Sc2). ). As a result of this determination, if neither the fire floor nor the directly upper floor is congested (NO in Sc2), the evacuation guidance control unit 912 is installed on the upper floor directly above the floor with reference to the speaker information database 922. The fire broadcast message is output by voice from the speaker 8 (Sc3). On the other hand, as a result of the determination in step Sc2, if either or both of the fire floor and the directly above floor are congested (YES in Sc2), the evacuation guidance control unit 912 performs a predetermined holding time after executing step Sc1. It is determined whether or not elapses (Sc4). As a result of this determination, when the predetermined holding time has not elapsed (NO in Sc4), the evacuation guidance control unit 912 executes Step Sc2 again. On the other hand, as a result of this determination, when the predetermined holding time has elapsed (YES in Sc4), the above-described step Sc3 is executed. When a predetermined time elapses after the fire broadcast to the upper floor, the evacuation guidance control unit 912 refers to the speaker information database 922 and outputs a sound of the fire broadcast message from the speaker 8 installed on the lower floor of the fire floor. (Sc5).
This completes the description of the fire broadcast operation.

  According to the disaster prevention system 1 described above, since it is confirmed that the fire floor and the immediate upper floor are not congested, the fire broadcast is performed on the upper floor, so that the evacuation is sequentially set with a fixed waiting time. In comparison, congestion near the fire floor is reduced. Moreover, even if the congestion between the fire floor and the directly above floor is not solved, the fire broadcast is performed on the upper floor when the predetermined holding time has elapsed, so that the evacuation delay is avoided. Moreover, even if the building which is a fire prevention object does not have an indoor positioning system, the congestion situation of each floor can be managed.

2. Modifications The above embodiment may be modified as follows. The following two or more modified examples may be combined with each other.

2-1. Modification 1
The disaster prevention system 1 controls the timing of the fire broadcast to the upper floor according to the congestion situation of the fire floor and directly above the floor, but instead of or in addition to the fire broadcast, it controls the ringing timing of the district acoustic device It may be. In this case, the fire receiver 5 stores a congestion information database and has functions of a congestion information receiving unit and an evacuation guidance control unit.

  The congestion information database is a database that manages the congestion status of each floor (more specifically, the evacuation stairs on each floor) of a building that is a fire prevention object. The data structure of this congestion information database is the same as that of the congestion information database 725 provided in the support server 7.

  When the congestion information receiving unit receives the congestion information from the support server 7, the congestion information receiving unit updates the congestion information database with the received congestion information. That is, the congestion information database 725 of the support server 7 and the data of the congestion information database of the fire receiver 5 are synchronized.

  When the fire determination unit 512 determines the occurrence of a fire (that is, when evacuation is necessary), the evacuation guidance control unit rings the district acoustic device installed on the fire floor and the immediately above floor. In addition, after the warning to the fire floor and the directly above floor, regarding the one floor among the plurality of floors of the building that is the fire prevention object, the congestion determination unit 718 is not congested with respect to the floor below the one floor. After it is determined, evacuation guidance is executed. At that time, even before it is determined that the lower floor is not congested, evacuation guidance is executed if a predetermined holding time has elapsed after the warning to the fire floor and the upper floor. Here, the first floor is specifically the upper floor directly above, and the lower floor is specifically the fire floor and the upper floor. For the determination result by the congestion determination unit 718, the congestion information database of the fire receiver 5 is referred to. Evacuation guidance is the ringing of the district acoustic device. When the alarm for the upper floor is completed, the evacuation guidance control unit rings the district acoustic device installed on the lower floor.

  FIG. 12 is a flowchart showing an example of an alarm operation executed by the fire receiver 5 according to this modification. This operation is executed when the fire determination unit 512 of the fire receiver 5 determines the occurrence of a fire.

When the fire determination unit 512 of the fire receiver 5 determines the occurrence of a fire (that is, when evacuation is necessary), the evacuation guidance control unit of the fire receiver 5 is installed in the fire floor and the district sound just above it. The device is sounded (Sd1). After a warning to the fire floor and the directly above floor, when a predetermined time has elapsed, the evacuation guidance control unit determines whether or not the fire floor and the directly above floor are congested (Sd2). As a result of the determination, if neither the fire floor nor the directly upper floor is congested (NO in Sd2), the evacuation guidance control unit rings the district acoustic device installed on the upper floor immediately above (Sd3). ). On the other hand, as a result of the determination in step Sd2, if either or both of the fire floor and the directly above floor are congested (YES in Sd2), the evacuation guidance control unit performs a predetermined holding time after executing step Sd1. It is determined whether or not it has elapsed (Sd4). As a result of this determination, when the predetermined holding time has not elapsed (NO in Sd4), the evacuation guidance control unit executes step Sd2 again. On the other hand, if the result of this determination is that a predetermined holding time has elapsed (YES in Sd4), step Sd3 described above is executed. When a predetermined time elapses after the warning to the upper floor, the evacuation guidance control unit rings the district acoustic device installed on the lower floor of the fire floor (Sd5).
The above is the description of the alarm operation.

  According to the disaster prevention system 1 described above, since it is confirmed that the fire floor and the upper floor are not congested, an alarm is given to the upper floor. Thus, congestion near the fire floor is reduced. Further, even when the congestion between the fire floor and the immediately above floor is not eliminated, an evacuation delay is avoided because a warning is given to the upper floor when a predetermined holding time has elapsed.

  In the example described above, the fire receiver 5 performs the evacuation guidance by ringing the district acoustic device, but evacuates by flashing the light alarm device instead of or in addition to the ringing of the district acoustic device. Guidance may be performed.

2-2. Modification 2
The support server 7 and the emergency broadcast facility 9 may be integrated, and the support server 7 may output a fire broadcast message from the speaker 8 by voice.

2-3. Modification 3
The determination of the presence or absence of congestion may be made based on atmospheric pressure information generated by the atmospheric pressure sensor 67 instead of the moving speed. The support server 7 includes an atmospheric pressure change specifying unit instead of the moving speed specifying unit 716. The atmospheric pressure change specifying unit obtains the atmospheric pressure change amount per unit time based on the atmospheric pressure information included in the movement information acquired by the movement information acquisition unit 714, and stores it in the movement information database 724 instead of the movement speed. Based on the atmospheric pressure information, the descent determining unit 715 determines whether the mobile terminal 6 that generated the atmospheric pressure information is moving downstairs, and stores the result in the movement information database 724. The congestion determination unit 718 determines whether or not each of the plurality of floors of the building that is the fire prevention object is congested based on the atmospheric pressure change amount specified by the atmospheric pressure change specifying unit. At that time, the congestion determination unit 718 refers to the movement information database 724, calculates the average value of the atmospheric pressure change amount (limited to the atmospheric pressure change amount during descent) for each floor, and based on the result, the congestion determination unit 718 calculates It is determined whether or not. When determining the presence or absence of congestion, if the average value of atmospheric pressure change is slower than 0.1 hPa / second, it is determined that the air pressure is congested. Conversely, the average value of atmospheric pressure change is 0.1 hPa / second or more. If it is, it is determined that it is not crowded.

2-4. Modification 4
The anomaly information receiving unit 711 of the support server 7 and the anomaly information receiving unit 911 of the emergency broadcasting facility 9 are information that requires evacuation, in place of or in addition to the fire confirmation signal, in addition to earthquakes, tsunamis, floods, You may make it receive the information which shows the occurrence of other abnormalities, such as terrorism, or the possibility.

2-5. Modification 5
The movement information acquisition unit 714 of the support server 7 is not limited to the portable terminal 6 carried by a self-defense fire brigade member, but is a portable terminal 6 carried by a person who is not selected as a member (including candidate members and those who are not). Movement information may also be acquired.

2-6. Modification 6
The descent determination, the movement speed specification, and the stay floor specification executed by the support server 7 may be performed on the mobile terminal 6 side. Then, the result of the descent determination and the identified moving speed and stay floor may be transmitted from the portable terminal 6 to the support server 7 as movement information. The stay floor is specified by specifying the altitude (height) based on the atmospheric pressure value detected by the atmospheric pressure sensor 67 by the mobile terminal 6 and transmitting the altitude information to the support server 7. Based on the altitude information received by 717, the floor where the mobile terminal 6 stays may be specified. In that case, instead of the atmospheric pressure information database 723, the support server 7 is provided with an altitude information database that stores the floor and its altitude range in association with each floor of the building that is the fire prevention object.

2-7. Modification 7
The congestion determination unit 718 of the support server 7 calculates an average value of the moving speed for each floor, and instead of determining whether or not it is congested based on the calculated average value, 0.6 m / It may be determined whether or not the vehicle is congested based on the number of members moving later than one second. Specifically, if there are more members moving slower than 0.6 m / s than other members, it is determined that the member is congested, and vice versa. You may make it determine. When this determination method is adopted, in addition to performing the descent determination, the movement speed specification and the stay floor specification on the mobile terminal 6 side as in Modification 4 above, the congestion determination is also performed on the mobile terminal 6 side, The result of the congestion determination may be transmitted from the mobile terminal 6 to the support server 7 as movement information. In this way, the load on the support server 7 can be reduced. This is particularly effective when the support server 7 manages a plurality of buildings.

2-8. Modification 8
The evacuation guidance control unit 912 of the emergency broadcasting facility 9 evacuates the building, which is a fire prevention object, into three blocks of a fire floor, a directly upper floor, an upper floor, and a lower floor. A plurality of floors constituting a floor or a lower floor may be further divided into a plurality of blocks, and evacuation may be sequentially performed in the upper floor or the lower floor. That is, for one floor among a plurality of floors constituting the upper floor or the lower floor, the fire broadcast is executed after it is determined by the congestion determination unit 718 that the floor below the one floor is not crowded. You may do it. At that time, even if it is determined that the lower floor is not crowded, a fire broadcast may be executed if a predetermined holding time has elapsed.

2-9. Modification 9
The support server 7 may always collect information such as movement information of all portable terminals 6 of the member candidates, receive the abnormality information, and perform the congestion determination after the formation of the self-defense fire brigade.

DESCRIPTION OF SYMBOLS 1 ... Disaster prevention system, 2 ... Self-reporting equipment, 3 ... Disaster prevention support system, 4 ... Fire detector, 5 ... Fire receiver, 6 ... Portable terminal, 7 ... Support server, 8 ... Speaker, 9 ... Emergency broadcasting equipment DESCRIPTION OF SYMBOLS 10 ... Communication line 51 ... Control part 52 ... Storage part 53 ... Display part 54 ... Operation input part 55 ... 1st communication part 56 ... 2nd communication part 61 ... Control part 62 ... Storage part , 63 ... display section, 64 ... operation input section, 65 ... communication section, 66 ... acceleration sensor, 67 ... atmospheric pressure sensor, 71 ... control section, 72 ... storage section, 73 ... communication section, 91 ... control section, 92 ... storage , 93 ... 1st communication part, 94 ... 2nd communication part, 511 ... Fire detection signal reception part, 512 ... Fire determination part, 513 ... Fire information transmission part, 521 ... Sensor database, 611 ... Information reception part, 612 ... display control unit, 613 ... information transmission unit, 711 ... abnormal information reception unit, DESCRIPTION OF SYMBOLS 12 ... Organization part, 713 ... Role information transmission part, 714 ... Movement information acquisition part, 715 ... Descent | fall determination part, 716 ... Movement speed specific part, 717 ... Stay floor specific part, 718 ... Congestion determination part, 719 ... Congestion information transmission 721 ... Member candidate information database, 722 ... Member information database, 723 ... Barometric pressure information database, 724 ... Movement information database, 725 ... Congestion information database, 911 ... Abnormal information reception part, 912 ... Evacuation guidance control part, 913 ... Congestion Information receiving unit, 921 ... congestion information database, 922 ... speaker information database

Claims (3)

For each of the multiple floors of the building, a moving speed specifying unit that specifies the moving speed of the mobile terminal moving down the floor,
For each of the plurality of floors, a congestion determination unit that determines whether or not it is crowded based on the movement speed specified by the movement speed specification unit;
When an evacuation is required, an evacuation guidance is executed for one of the plurality of floors after the congestion determination unit determines that the floor below the one floor is not crowded. A disaster prevention system comprising an evacuation guidance control unit.   2. The evacuation guidance control unit according to claim 1, wherein the evacuation guidance control unit performs evacuation guidance when a predetermined holding time has elapsed even before it is determined that the lower floor is not congested. The described disaster prevention system. When the floor on which the mobile terminal stays is specified based on the atmospheric pressure value detected by the atmospheric pressure sensor included in the mobile terminal, the specified stay floor, and the movement speed specified by the movement speed specifying unit for the mobile terminal, Is further provided with a stay floor identifying unit that stores the information in the movement information database in association with each other,
The disaster prevention system according to claim 1 or 2, wherein the congestion determination unit determines whether or not each of the plurality of floors is congested with reference to the movement information database.

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