Disaster prevention system

Abstract

To provide a disaster prevention system capable of improving a disaster prevention property.SOLUTION: In a disaster prevention system 100 comprising a plurality of terminal devices 1 carried by a plurality of users, an information sharing server 5 in which at least information about the plurality of terminal devices 1 is stored, and a disaster prevention notification server 4 for specifying at least a place where a sign of fire occurs, the information sharing server 5 transmits fire sign information indicating the occurrence of the sign of fire to the terminal devices 1 previously associated with a place indicated by sign place information among the plurality of terminal devices 1 based on the received sign place information, when receiving, from the disaster prevention notification server 4, the sign place information indicating the place where the sign of fire occurs, and transmits information of instructing extinguishment to predetermined terminal devices 1 among the plurality of terminal devices 1 when receiving predetermined information transmitted from sides of the plurality of terminal devices 1, after transmitting the fire sign information.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a disaster prevention system. [Background technology]

[0002] Conventionally, when a fire breaks out, a fire alarm system has notified people in a facility by using a bell or the like (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2015-005312 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in order to avoid confusion caused by non-fire alarms, the entire facility is notified at once after the fire level has been determined, and therefore, notification to facility personnel outside the disaster prevention center (for example, hotel employees in a hotel facility) is also made at the same time as the general notification. As a result, there was a demand for early notification to the personnel, and there was room for improvement in terms of improving disaster prevention capabilities.

[0005] The present invention has been made in view of the above problems, and aims to provide a disaster prevention system that can improve disaster prevention capabilities. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objectives, the disaster prevention system described in claim 1 is a disaster prevention system that uses multiple different group chats in which multiple information terminals participate, and based on fire-related information received from outside, selects a first group chat to post information to from the group chats, notifies the group chat of the first information posting destination of information based on the fire-related information, and when information related to a fire is posted on the group chat of the first information posting destination, selects a second group chat to post information to from the group chats based on the fire-related information, and notifies the group chat of the second information posting destination of information related to fire extinguishing.

[0007] The method for responding to a fire using group chats described in claim 2 is a method for responding to a fire using multiple different group chats in which multiple information terminals participate, in which the system selects a first group chat to post information to from the group chats based on fire-related information received from outside, notifies the group chat of the first information posting destination of information based on the fire-related information, and when information related to a fire is posted on the group chat of the first information posting destination, selects a second group chat to post information to from the group chats based on the fire-related information, and notifies the group chat of the second information posting destination of information related to fire extinguishing. [Effects of the Invention]

[0008] According to the disaster prevention system described in claim 1, the problem of the present application can be solved. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram showing a hotel building to which a disaster prevention system according to an embodiment of the present invention is applied; [Figure 2] FIG. 2 is a plan view of a portion of the second floor of the building in FIG. 1. [Figure 3] FIG. 2 is a block diagram showing the functions of the disaster prevention system. [Figure 4]FIG. 2 is a diagram illustrating terminal IDs and group IDs stored in each terminal device. [Figure 5] FIG. 10 is a diagram illustrating facility information. [Figure 6] FIG. 10 is a diagram illustrating an example of user information. [Figure 7] FIG. 10 is a diagram illustrating an example of chat group identification information. [Figure 8] FIG. 10 is a diagram illustrating an example of notification destination group identification information. [Figure 9] FIG. 10 is a diagram illustrating an example of chat history information. [Figure 10] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 11] 10 is a flowchart of a sign-related process. [Figure 12] FIG. 2 is a plan view of a portion of the second floor of the building in FIG. 1. [Figure 13] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 14] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 15] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 16] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 17] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 18] 10 is a flowchart of a fire-related process. [Figure 19] FIG. 10 is a diagram illustrating an example of a group chat display screen. [Figure 20] 10 is a flowchart of a process related to fire level determination. [Figure 21] FIG. 10 is a diagram illustrating an example of a group chat display screen. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disaster prevention system according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiment.

[0011] [Basic Concept of the Embodiment] First, the basic concept of this embodiment will be explained. This embodiment generally relates to a disaster prevention system.

[0012] A "disaster prevention system" is a system used for disaster prevention, and specifically, is a device for outputting information related to disaster prevention, and includes, for example, a mobile terminal, a management device, and a fire alarm system.

[0013] A "mobile terminal" is a device carried by a user (that is, a user of the mobile terminal), and is a concept that includes computers such as smartphones and tablet terminals.

[0014] The term "management device" refers to a device that stores information about at least a plurality of mobile terminals, and specifically includes a concept that includes a device that, when it receives fire warning location information from a fire alarm system indicating the location where a fire warning has occurred, transmits fire warning information indicating that a fire warning has occurred to a first mobile terminal among the plurality of mobile terminals that is pre-associated with the location indicated by the fire warning location information based on the received fire warning location information, and, after transmitting the fire warning information, when it receives specified information sent from the plurality of mobile terminals, transmits information instructing a second mobile terminal among the plurality of mobile terminals to extinguish the fire.

[0015] "Information relating to a plurality of mobile devices" is a concept that includes, for example, first information indicating a location related to the target facility and a mobile device associated with the location, or second information indicating a mobile device carried by a user who will be in charge of initial firefighting in the event of a fire (including signs of a fire) occurring at the target facility. Note that "a mobile device associated with the location" is a concept that includes, for example, a mobile device carried by a user who will be notified of the occurrence of a fire (including signs of a fire) in the event of a fire (including signs of a fire) occurring at the location of the associated target facility.

[0016] Note that a "sign of a fire" may refer to, for example, a state in which a predetermined physical quantity detected by a fire detector (i.e., for example, the concentration of smoke detected by the detector) is approaching a state that satisfies the conditions for a fire outbreak, such as a sign of a relatively large-scale combustion phenomenon. For example, it may be interpreted as including a combustion phenomenon of a scale that can be extinguished by a user in the facility without the need to notify firefighters, or a case in which an actual fire is not present due to, for example, cigarette smoke, dust, steam, etc. Furthermore, a "fire" may refer to, for example, a combustion phenomenon of a scale larger than the combustion phenomenon corresponding to the aforementioned fire sign, such as a combustion phenomenon of a scale that requires the firefighters to be notified and extinguished by the firefighters. Note that the definitions of "sign of a fire" and "fire" described herein are merely examples, and other definitions, including well-known definitions, may be applied as long as they correspond to the description of this embodiment (the definitions of other terms may also be interpreted similarly).

[0017] The "first mobile terminal" is, for example, one or more mobile terminals among a plurality of mobile terminals, and is a concept indicating a mobile terminal that is associated in advance with a location where a fire warning sign has occurred. The "second mobile terminal" is, for example, one or more mobile terminals among a plurality of mobile terminals, and is a concept indicating a mobile terminal carried by a user in charge of initial fire extinguishing.

[0018] "Specified information" refers to information that has been determined in advance, and includes, for example, information indicating that a fire has been confirmed, and is a concept that includes, for example, information corresponding to predetermined words such as "fire" or "fire."

[0019] The term "target facility" refers to a facility to which the disaster prevention system is applied, and is a concept that includes any facility such as a hotel, a shopping center, and a school.

[0020] The aforementioned "management device" is a concept that includes, for example, a device that, after transmitting fire warning information, receives information indicating that a fire has been confirmed as specified information, transmits information to a second mobile terminal instructing the first fire extinguishing equipment to extinguish the fire; and also, a concept that includes means for transmitting information to a second mobile terminal instructing the second fire extinguishing equipment to extinguish the fire, when, after transmitting information instructing the first fire extinguishing equipment, information indicating that extinguishing the fire using the first fire extinguishing equipment is difficult is received.

[0021] The "first fire extinguishing equipment" is equipment for extinguishing a fire, specifically equipment that can be handled by the aforementioned user to extinguish a fire, and is equipment that can be handled more easily than the second fire extinguishing equipment, and is a concept that includes, for example, a fire extinguisher, etc. The "second fire extinguishing equipment" is equipment for extinguishing a fire, specifically equipment that can be handled by the aforementioned user to extinguish a fire, and is a concept that includes, for example, a fire hydrant device, etc.

[0022] A "fire alarm system" is a system that can at least identify the location where a fire warning sign occurs.

[0023] In the following embodiment, a case will be described in which the facility to which the disaster prevention system is applied is a hotel.

[0024] [Specific details of the embodiment] Next, specific details of the embodiment will be described.

[0025] (composition) First, the configuration of the disaster prevention system according to this embodiment will be described. Fig. 1 is a diagram showing a hotel building to which the disaster prevention system according to this embodiment is applied, Fig. 2 is a plan view of a part of the second floor of the building in Fig. 1, and Fig. 3 is a block diagram showing the functions of the disaster prevention system.

[0026] Disaster prevention system 100 in FIGS. 1 and 3 is a system for at least preventing fires in the building of FIG. 1, specifically, a system for preventing fires in an area within the building or an area outside the building (such as a hotel parking lot, which is not shown in FIG. 1 for ease of explanation). The building is, for example, a hotel facility, and as shown in FIG. 2, the second floor of the building is provided with multiple staircases (first to third staircases, etc.), multiple guest rooms (rooms 1 to 5, etc.), and multiple corridors (first to third corridors, etc.). Note that in FIG. 2, for ease of explanation, sensors 2 are shown as circles, and although multiple sensors 2 are provided, only sensors 201 and 202 of these sensors 2 are designated by reference numerals.

[0027] The disaster prevention system 100 in FIGS. 1 and 3 includes, for example, a terminal device 1, a sensor 2, a disaster prevention receiver 3, a disaster prevention notification server 4 (FIG. 3), and an information sharing server 5 (FIG. 3).

[0028] (Configuration - Terminal Device) The terminal device 1 in FIGS. 1 and 3 is the above-mentioned mobile terminal, which is a device carried by a user (customer) who is an employee of a hotel, and is, for example, a smartphone.

[0029] Although there are many users who are employees of the hotel in the building of Fig. 1, in this embodiment, "A1" to "A7" (denoted for convenience) in Fig. 1 indicate the names of the users, and the description will focus on the users "A1" to "A7". As for the occupations of these users, as shown in Fig. 1, the description will be made assuming that "A1" is a front desk clerk, "A2" and "A3" are bell staff, "A4" is a cloakroom clerk, "A5" is a second-floor cleaner, "A6" is a second-floor facility attendant, and "A7" is a third-floor facility attendant.

[0030] The terminal device 1 includes, for example, terminal devices 101 to 107 carried by each of these users. Each terminal device 1 includes, for example, a communication unit 11, a touchpad 12, a display 13, a recording unit 14, and a control unit 15, as shown in FIG.

[0031] (Configuration - Terminal Device - Communication Unit) 3 is a communication means for communicating with an external device (for example, the information sharing server 5). The specific type and configuration of this communication unit 11 are arbitrary, but it can be configured using, for example, a known communication circuit or the like.

[0032] (Configuration - Terminal Device - Touchpad) 3 is an operation means for receiving various operation inputs from a user by being pressed with the user's finger, etc. The specific configuration of this touchpad 12 is arbitrary, but for example, a known touchpad equipped with an operation position detection means using a resistive film method, a capacitance method, or the like can be used.

[0033] (Configuration - Terminal Device - Display) 3 is a display means for displaying various images under the control of the control unit 15. The specific configuration of the display 13 is arbitrary, and for example, a known flat panel display such as a liquid crystal display or an organic EL display can be used. Note that the touch pad 12 and the display 13 may be superimposed on each other to form an integrated touch panel.

[0034] (Configuration - Terminal Device - Recording Unit) 3 is a recording means for recording programs and various data necessary for the operation of the terminal device 1, and is configured using, for example, a flash memory as an external recording device. However, instead of or in addition to the flash memory, any other recording medium may be used, including a magnetic recording medium such as a hard disk or a magnetic disk, or an optical recording medium such as a DVD or a Blu-ray disc (the same applies to the recording units of other devices).

[0035] The recording unit 14 stores, for example, terminal identification information (hereinafter, identification information will be referred to as "ID") and group IDs. Fig. 4 is a diagram illustrating terminal IDs and group IDs stored in each terminal device. In Fig. 4, it is shown that the terminal ID and group ID recorded in the recording unit 14 of the terminal device 1 described in the "Terminal Device" column are the terminal ID and group ID shown in the "Terminal ID" and "Group ID" columns associated with the "Terminal Device" column. That is, for example, Fig. 4 shows that the terminal ID recorded in the recording unit 14 of the terminal device 101 (Fig. 1) is "IDt001", and the group IDs recorded in the recording unit 14 of the terminal device 101 are "IDg001" to "IDg007", etc.

[0036] 3 is information for uniquely identifying the terminal device 1. The recording units 14 of the terminal devices 101 to 107 in FIG. 1 store "IDt001" to "IDt007" as shown in FIG.

[0037] The "group ID" in FIG. 3 is information that uniquely identifies a chat group to which a user of each terminal device 1 belongs. The "chat group" is a concept that indicates a group of users who communicate with each other using text information or voice information using the terminal device 1, that is, a concept that indicates a group of users who engage in so-called group chat. The method for generating this "chat group" is arbitrary, but it is assumed that it is determined in advance based on an arbitrary concept including, for example, each user's occupation (such as the aforementioned front desk or bell staff) or the job they will be responsible for in an emergency (such as the job of extinguishing a fire at an initial stage). Specific chat groups will be described later. As shown in FIG. 4, the recording unit 14 of the terminal devices 101 to 107 in FIG. 1 stores "IDg001" to "IDg008", etc. The chat groups identified by "IDg001" to "IDg008" will also be described later.

[0038] (Configuration - Terminal Device - Control Unit) 3 is a control means for controlling the terminal device 1, and is specifically a computer including a CPU, various programs interpreted and executed on the CPU (including basic control programs such as an OS and application programs that are started on the OS and realize specific functions), and an internal memory such as a RAM for storing programs and various data (the same applies to the control units of other devices). In particular, the program according to the embodiment is installed on the terminal device 1 via an arbitrary recording medium or a network, thereby substantially configuring each unit of the control unit 15 (the same applies to the control units of other devices). The processing performed by the control unit 15 will be described later.

[0039] (Configuration-sensor) 1 to 3 are devices that detect and report signs of a fire or the occurrence of a fire in the section (area) in which they are installed, are installed in each section on each floor, and are communicatively connected to the disaster prevention receiver 3 via a transmission line L1 (FIG. 1), and include, for example, a sensor 201 installed in room 1, which is a guest room on the second floor of a building, and a sensor 202 installed in room 2, which is also a guest room on the second floor of the building, as shown in FIG. 2. Note that the sensors 2 may be able to communicate with the disaster prevention receiver 3 via wireless communication without using the transmission line L1, using known wireless communication technology.

[0040] The specific type and configuration of this sensor 2 are arbitrary, but for example, it includes a communication unit, a recording unit, and a control unit, which are not shown. The recording unit of the sensor 2 stores an equipment ID for uniquely identifying itself, and in particular, the recording units of sensors 201 and 202 store "IDd201" to "IDd202" as equipment IDs.

[0041] (Configuration - Disaster prevention receiver) 1 and 3 is a device that performs various processes related to disaster prevention based on various signals received from the detector 2. The specific configuration of this disaster prevention receiver 3 is arbitrary, but it may include, for example, a communication unit, a recording unit, and a control unit, which are not shown. Since a known configuration can be applied to the specific configuration of this disaster prevention receiver 3, detailed description thereof will be omitted.

[0042] (Configuration - Disaster prevention notification server) The disaster prevention notification server 4 in Fig. 3 is the fire alarm system described above. The disaster prevention notification server 4 is a device that is installed, for example, in the building in Fig. 1 or at any location outside the building (for example, a disaster prevention center or a data center), and may be configured, for example, as a computer that operates independently, or may be configured as a so-called cloud computer that is configured using multiple computers (the same applies to the information sharing server 5).

[0043] As shown in FIG. 3, the disaster prevention notification server 4 includes, for example, a communication unit 41, a recording unit 42, and a control unit 43.

[0044] (Configuration - Disaster prevention notification server - Communication unit) 3 is a communication means for communicating with external devices (for example, the disaster prevention receiver 3 and the information sharing server 5). The specific type and configuration of the communication unit 41 are arbitrary, but it can be configured using, for example, a known communication circuit or the like.

[0045] (Configuration - Disaster prevention notification server - Recording unit) The recording unit 42 in FIG. 3 is a recording means for recording programs and various data required for the operation of the disaster prevention notification server 4, and stores, for example, facility information.

[0046] (Configuration - Disaster prevention notification server - Recording unit - Equipment information) "Facility information" is information that identifies each piece of equipment (in this embodiment, detector 2), which is each device included in the disaster prevention system 100. FIG. 5 is a diagram illustrating an example of facility information. For example, as shown in FIG. 5, this facility information correlates information corresponding to the item "facility ID," information corresponding to the item "facility type information," and information corresponding to the item "installation location information."

[0047] The information corresponding to the item "facility ID" is the aforementioned facility ID for uniquely identifying the detector 2, which is a facility. This facility ID is arbitrary, but for example, "IDd201" to "IDd202" that uniquely identify the detectors 201 to 202 in FIG. 2 are stored. The information corresponding to the item "facility type information" is facility type information that identifies the type of facility (in FIG. 5, "detector" that identifies the type of detector 2, etc.). The information corresponding to the item "installation location information" is installation location information that identifies the location where each facility is installed (in FIG. 5, "2nd Floor Guest Room (Room 1)" that indicates Room 1 (FIG. 2), which is a guest room on the second floor of the building, "2nd Floor Guest Room (Room 2)" that indicates Room 2 (FIG. 2), which is a guest room on the second floor of the building, "restaurant" that indicates a restaurant located in the building in FIG. 1, "lobby" that indicates the lobby, "parking lot" that indicates a hotel parking lot located in the vicinity of the building, etc.).

[0048] The information at the top of such facility information (information on the combination of "IDd201," "detector," and "guest room on the second floor (room 1)") indicates that the type of detector 201 (Figure 2) identified by "facility ID" = "ID201" is a "detector" as indicated by the "facility type information," and that the location where detector 201 is installed is a "guest room on the second floor (room 1)" as indicated by the "installation location information" (i.e., room 1, a guest room on the second floor of the building).

[0049] The specific method for storing such equipment information is arbitrary, but for example, when information is input to the disaster prevention notification server 4 using any method (for example, a method for inputting information using a recording medium such as a memory stick, or a method for the administrator to send and input information from his or her own terminal), the control unit 43 stores the equipment information based on that information (the same applies to each piece of information described below, unless otherwise specified).

[0050] (Configuration - Disaster prevention notification server - Control unit) 3 is a control means that controls the disaster prevention notification server 4. The processing performed by the control unit 43 will be described later.

[0051] (Configuration-Information sharing server) The information sharing server 5 in Fig. 3 is the aforementioned management device, and is at least a device for conducting group chats among a plurality of users. Note that the group chat-related functions of this information sharing server 5 can be realized using any technology, including known technology, so only the features characteristic of the present application will be described in detail, and the other features will be described only in outline.

[0052] As shown in FIG. 3, the information sharing server 5 includes, for example, a communication unit 51, a recording unit 52, and a control unit 53.

[0053] (Configuration-Information Sharing Server-Communication Department) 3 is a communication means for communicating with external devices (for example, the terminal device 1 and the disaster prevention notification server 4). The specific type and configuration of this communication unit 51 are arbitrary, but it can be configured using, for example, a known communication circuit or the like.

[0054] (Configuration - Information sharing server - Recording section) The recording unit 52 in Figure 3 is a recording means for recording programs and various data necessary for the operation of the information sharing server 5, and stores, for example, user information, chat group identification information, notification group identification information, and chat history information.

[0055] (Configuration - Information sharing server - Recording section - User information) "User information" is information that identifies a user, for example, information that identifies an employee of a hotel to which the disaster prevention system 100 is applied. FIG. 6 is a diagram illustrating an example of user information. As shown in FIG. 6, for example, this user information is mutually associated with information corresponding to the item "name information," information corresponding to the item "occupation information," and information corresponding to the item "terminal ID."

[0056] Information corresponding to the item "Name Information" is name information indicating the user's name (in FIG. 6, this is written for convenience, and as mentioned above, it is "A1" etc. shown in FIG. 1). Information corresponding to the item "Occupation Information" is occupation information indicating the user's occupation (in FIG. 6, as mentioned above, it is "Front Desk" etc. indicating the occupation of a front desk clerk). Information corresponding to the item "Terminal ID" is a terminal ID that uniquely identifies the terminal device 1 carried by the user (in FIG. 6, it is "IDt001" etc. mentioned above).

[0057] The information at the top of such user information (information combining "A1," "Front," and "IDt001") indicates that the occupation of the user named "A1" is front desk clerk, as indicated by the "Occupation Information" = "Front," and that the terminal ID of the terminal device 101 carried by the user named "A1" is "IDt001" (i.e., the terminal device 1 carried by the user named "A1" is the terminal device 101 identified by "IDt001").

[0058] (Configuration - Information sharing server - Recording unit - Chat group specific information) "Chat group identification information" is information that identifies the chat group described above. FIG. 7 is a diagram illustrating an example of chat group identification information. As shown in FIG. 7, for example, this chat group identification information mutually associates information corresponding to the item "group ID," information corresponding to the item "group name information," information corresponding to the item "occupation information," and information corresponding to the item "terminal ID."

[0059] Information corresponding to the item "group ID" is a group ID that uniquely identifies a chat group (e.g., "IDg001" in FIG. 7). Information corresponding to the item "group name" is group name information that specifies the name of the chat group (e.g., "front group" in FIG. 7). Information corresponding to the item "occupation information" is occupation information that indicates the occupations of users belonging to the chat group (e.g., "front desk" in FIG. 7). Note that the occupation information in FIG. 7 also stores "all," which indicates all occupations, and "any," which indicates that users belonging to the chat group are not determined by occupation (i.e., the occupations of users belonging to the chat group are arbitrary). Information corresponding to the item "terminal ID" is a terminal ID that uniquely identifies a terminal device 1 carried by a user belonging to the chat group (e.g., "IDt001" in FIG. 7). Note that the terminal ID in FIG. 7 also stores "all," which indicates the terminal IDs of all terminal devices 1 included in the disaster prevention system 100.

[0060] The information at the top of such chat group identification information (information on the combinations of "IDg001," "front group," "front, bell staff, cloakroom," and "IDt001, IDt002, IDt003, IDt004, ...") indicates that the name of the chat group identified by "IDg001" is the "front group," and that the occupations of users belonging to the "front group" are the front desk staff indicated by "front," the bell staff indicated by "bell staff," and the cloakroom staff indicated by "cloakroom." It is also shown that the terminal IDs that uniquely identify the terminal device 1 carried by the users belonging to the "front desk group" are "IDt001" (i.e., the terminal ID of the terminal device 101 carried by the front desk attendant "A1"), "IDt002" (i.e., the terminal ID of the terminal device 102 carried by the bell staff "A2"), "IDt003" (i.e., the terminal ID of the terminal device 103 carried by the bell staff "A3"), "IDt004" (i.e., the terminal ID of the terminal device 104 carried by the cloakroom attendant "A4"), etc.

[0061] Furthermore, the information at the bottom of such chat group identification information (information combining "IDg008," "initial fire extinguishing group," "any," and "IDt002, IDt004, ...") indicates that the name of the chat group identified by "IDg008" is the "initial fire extinguishing group," that the occupation of users belonging to the "initial fire extinguishing group" is any, and that the terminal IDs that uniquely identify the terminal devices 1 carried by users belonging to the "initial fire extinguishing group" are "IDt002" (i.e., the terminal ID of terminal device 102 carried by "A2," a Belstaff employee) and "IDt004" (i.e., the terminal ID of terminal device 104 carried by "A4," a cloakroom attendant), etc.

[0062] In addition, the "Terminal ID" = "IDt002, IDt004, ..." in the information at the bottom (the information that is a combination of "IDg008," "Initial Fire Extinguishing Group," "Optional," and "IDt002, IDt004, ...") may be interpreted as corresponding to "second information indicating the mobile terminal carried by the user in charge of initial fire extinguishing in the event of a fire (including signs of a fire) occurring in the target facility."

[0063] Note that the specific method for storing such chat group identification information is arbitrary. For example, chat groups other than "group name information" = "all employees" and "initial fire extinguishing group" may be stored by generating each group so that users of occupations for which it is desirable for each user to share information with each other in their normal work are in the same group, and inputting information about the generated group into the information sharing server 5. Also, the chat group with "group name information" = "all employees" may be stored by inputting information for storing the information shown in the second row from the bottom in FIG. 7 into the information sharing server 5. Also, the chat group with "group name information" = "initial fire extinguishing group" may be stored by inputting the terminal ID of the terminal device 1 carried by the user in charge of initial fire extinguishing into the information sharing server 5.

[0064] (Configuration - Information sharing server - Recording unit - Notification destination group specific information) "Notification destination group identification information" is information that identifies a chat group to which a user to be notified of information related to a fire belongs. FIG. 8 is a diagram illustrating an example of notification destination group identification information. For example, as shown in FIG. 8, this notification destination group identification information mutually associates information corresponding to the item "Fire location information" and information corresponding to the item "Group ID."

[0065] The information corresponding to the item "Fire Location Information" is fire location information indicating the location where a fire is predicted or a fire has occurred. Any information can be used as this fire location information, for example, information specifying the section in which the detector 2 is installed. In this embodiment, however, a case where information corresponding to the installation location information in FIG. 5 is used will be described. FIG. 8 illustrates a "Restaurant" indicating a restaurant located in the building in FIG. 1, a "Lobby" indicating a lobby, a "Parking Lobby" indicating a parking lot of a hotel located around the building, and a "Guest Rooms on the Second Floor" indicating guest rooms on the second floor of the building in FIG. 2 (i.e., Rooms 1 to 5 on the second floor, etc.). The information corresponding to the item "Group ID" is a group ID that uniquely identifies a chat group to which a user who is to be notified of information about a fire belongs (such as the aforementioned "IDg001" in FIG. 8).

[0066] The information at the top of such notification group identification information (information on the combination of "restaurant, lobby" and "IDg001, IDg002, IDg004") indicates that when the location where the fire warning signs or fire occurred is "restaurant" or "lobby," the group IDs that uniquely identify the chat groups to which users to be notified of information about the fire belong are "IDg001," "IDg002," and "IDg004."

[0067] In addition, in the notification group identification information of Figure 8, the fire occurrence location information (i.e., information identifying the section in which detector 2 is installed) and the group ID are mutually associated, and in the chat group identification information of Figure 7 described above, the group ID and the terminal ID are mutually associated.Therefore, in the notification group identification information of Figure 8 and the chat group identification information of Figure 7, the fire occurrence location information and the terminal ID are mutually associated, so the notification group identification information of Figure 8 and the chat group identification information of Figure 7 may be interpreted as corresponding to "first information indicating a location related to the target facility and a mobile terminal associated with the location."

[0068] (Configuration - Information sharing server - Recording section - Chat history information) "Chat history information" is information that identifies the history of information shared within each chat group in a group chat. FIG. 9 is a diagram illustrating an example of chat history information. As shown in FIG. 9, this chat history information, for example, correlates information corresponding to the item "group ID," information corresponding to the item "group name information," and information corresponding to the item "chat information." Note that the information corresponding to the item "group ID" and the information corresponding to the item "group name information" are the same as the information of the same name in FIG. 7.

[0069] The information corresponding to the item "chat information" indicates the history of information shared among users belonging to a chat group. While this chat information can be arbitrary, a case will be described in which, for example, information indicating the date and time when the information was shared, information for identifying the information sharer, and information relating to the shared information are used. FIG. 9 illustrates "07011400-IDt001-GG has arrived. Has the second floor been cleaned?", which are mutually associated with "07011400-IDt001-GG has arrived. Has the second floor been cleaned?", which indicates the date and time when the information was shared, July 1st, 2:00 PM, "IDt001" which is the terminal ID of the terminal device 101 carried by the user "A1" in FIG. 1 who is the information sharer, and the shared information "GG has arrived. Has the second floor been cleaned?". Note that "GG" here is a convenient notation and represents the name of a customer who visited the hotel. In addition, chat information may be stored by each user entering information, or may be automatically stored by the control unit 53 of the information sharing server 5 in each process described below (rather than by each user entering information), but for the "information for identifying the information sharing entity," in the former case (i.e., when chat information is stored by each user entering information), the terminal ID will be used as described above, and in the latter case (i.e., when chat information is stored dynamically), "N" will be used.

[0070] The topmost information associated with the "Group ID" = "IDg005" in this chat history information (the information that combines "IDg005," "Guest Room Group (2F)," and "07011400-IDt001-GG has arrived, has the second floor been cleaned?") indicates that the name of the chat group identified by "IDg005" is "Guest Room Group (2F)," and that in the group chat of the "Guest Room Group (2F)" chat group, information was entered at 14:00 on July 1st, as indicated by "07011400." It also indicates that the terminal ID of the terminal device 1 of the user who entered the information is "IDt001" (i.e., it indicates that the information was entered by "A1," the user carrying the terminal device 105 indicated by "IDt001"), and that the information entered is "GG has arrived, has the second floor been cleaned?"

[0071] The specific method for storing such chat history information is arbitrary, but for example, the group ID and group name information is stored as information with the same names as shown in Figure 7, and the chat information is stored by executing the warning sign-related processing, fire-related processing, fire level determination-related processing, and chat processing described below.

[0072] (Configuration - Information sharing server - Control unit) 3 is a control means that controls the information sharing server 5. The processing performed by the control unit 53 will be described later.

[0073] (process) Next, chat processing, sign-related processing, fire-related processing, and fire level determination-related processing executed by the disaster prevention system 100 configured as above will be described.

[0074] It is assumed in the following description that the recording unit 14 (FIG. 3) of each of the terminal devices 101-107 in FIG. 1 stores, as group IDs, group IDs that identify chat groups to which each user carrying the terminal devices 101-107 belongs, in an arbitrary manner. For example, the method of storing the group IDs may be such that, at the time of initial setup of the terminal device 1, the control unit 53 of the information sharing server 5 identifies the group ID associated with each terminal ID by referring to the chat group identification information in FIG. 7 and transmits the identified group ID to each terminal device 1, and the control unit 15 of each terminal device 1 stores the group ID based on the transmitted group ID, or alternatively, the control unit 15 may store the group ID by inputting information via the touchpad 12. Here, it is assumed in the following description that the group IDs exemplified in FIG. 4 are stored in the recording unit 14 of each terminal device 1.

[0075] (Processing-Chat Processing) First, the chat process will be described. The "chat process" is a process for conducting a group chat within a chat group, and more specifically, a process for sharing information within a chat group. Since known processing techniques for conducting group chats can be applied to this chat process, only an outline will be described. The "chat process" includes, for example, a chat information storage process and a chat information display process.

[0076] (Processing - Chat processing - Chat information storage processing) The "chat information storage process" is a process of storing the chat information shown in FIG. 9 based on the information input to the terminal device 1 by each user.

[0077] First, when a user selects one chat group identified by a group ID stored in the recording unit 14 of the terminal device 1 as a chat group with which information will be shared, by a predetermined operation performed via the touchpad 12, and then inputs information to be shared within the selected chat group by any method, the control unit 15 of the terminal device 1 acquires the terminal ID stored in its own recording unit 14, acquires the group ID identifying the selected chat group, acquires the input information, and then transmits information including the acquired terminal ID, group ID, and input information (hereinafter referred to as "information to be stored on the terminal side") to the information sharing server 5. Note that the method for inputting the information to be shared within the chat group is arbitrary; for example, text information may be input via the touchpad 12, or, assuming that the terminal device 1 is provided with sound collection means such as a microphone, audio information may be input via the sound collection means; however, in this embodiment, a case where text information is input will be described.

[0078] Here, for example, "A1" who is the front desk clerk in FIG. 1 selects the chat group of "guest room group (2F)" identified by "IDg005" among "group ID"="IDg001, IDg002, IDg003, IDg004, IDg005, IDg006, IDg007, ..." stored in the recording unit 14 of the terminal device 101 as a chat group with which to share information, by a predetermined operation performed via the touch pad 12 of the terminal device 101, and then selects the information to be shared within the selected "guest room group (2F)". For example, when "GG has arrived, has the second floor been cleaned?" is input via the touchpad 12, the control unit 15 of the terminal device 1 acquires the "terminal ID" = "IDt001" stored in its own recording unit 14, acquires the "group ID" = "IDg005" that identifies the selected chat group, and acquires the "input information" = "GG has arrived, has the second floor been cleaned?", and then transmits "information to be stored on the terminal side" including the acquired information to the information sharing server 5.

[0079] Meanwhile, the control unit 53 of the information sharing server 5 receives the "information for storage on terminal side" transmitted from the terminal device 1, identifies the current date and time by any method (for example, a method of identifying the current date and time by referring to the timing result of a timing means such as a timer provided in the information sharing server 5), and then stores the chat information in the chat history information of Fig. 9 based on the identified current date and time and the received "information for storage on terminal side". In detail, in the chat history information of Fig. 9, as chat information associated with the same group ID as the group ID included in the received "information for storage on terminal side", information indicating the identified current date and time, the "terminal ID" included in the received "information for storage on terminal side", and information that correlates the "input information" included in the received "information for storage on terminal side" are stored as chat information.

[0080] For example, if the current date and time is identified as July 1st, 14:00, then in the chat history information of Figure 9, the chat information associated with the same group ID as the "group ID" = "IDg005" contained in the received "information for storage on terminal side" is "07011400", which indicates the identified current date and time, July 1st, 14:00, the "terminal ID" = "IDt001" contained in the received "information for storage on terminal side," and the "input information" = "GG-sama has arrived, has the second floor been cleaned?" contained in the "information for storage on terminal side" are mutually associated, and the chat information is stored as "07011400-IDt001-GG-sama has arrived, has the second floor been cleaned?" (the information at the top of the chat information specifically illustrated in Figure 9). This completes the "chat information storage process."

[0081] (Processing - Chat Processing - Chat Information Display Processing) The "chat information display process" is a process for displaying information corresponding to the chat information in the chat history information of FIG.

[0082] 10 is a diagram illustrating a group chat display screen. The "group chat display screen" is a screen that displays information shared within each chat group in a group chat, and is, for example, a screen that is displayed on the display 13 of the terminal device 1, and as an example, has a group name display field 61 and a main text display field 62. The group name display field 61 is a field that displays the name of the chat group, and the main text display field 62 is a field that displays the information shared within the chat group.

[0083] First, when a user selects one chat group identified by a group ID stored in the recording unit 14 of the terminal device 1 as the chat group for which information is to be displayed by performing a predetermined operation via the touchpad 12, the control unit 15 of the terminal device 1 acquires the terminal ID stored in its own recording unit 14, and also acquires the group ID that identifies the selected chat group, and then transmits information including the acquired terminal ID and group ID (hereinafter referred to as ``terminal side request information'') to the information sharing server 5.

[0084] Here, for example, if "A5," a second-floor cleaner in FIG. 1, selects one chat group, "Guest Room Group (2F)," identified by "IDg005" among "Group ID"="IDg003, IDg005, IDg007, ..." stored in the recording unit 14 of the terminal device 105 as the chat group for which information is to be displayed, by performing a predetermined operation via the touchpad 12 of the terminal device 105, the control unit 15 of the terminal device 105 acquires the "Terminal ID"="IDt005" stored in its own recording unit 14, and also acquires the "Group ID"="IDg005" that identifies the selected chat group, and then transmits "Terminal-Side Request Information" including the acquired "Terminal ID"="IDt005" and "Group ID"="IDg005" to the information sharing server 5.

[0085] Meanwhile, the control unit 53 of the information sharing server 5 receives the "terminal-side request information" sent from the terminal device 1, and by referring to the chat history information of FIG. 9, acquires group name information and chat information associated with the same group ID as the group ID included in the received "terminal-side request information," generates screen information for displaying the group chat display screen of FIG. 10 based on the acquired group name information and chat information, and transmits the generated screen information and information including the terminal ID included in the received "terminal-side request information" (hereinafter referred to as "server-side response information") to the terminal device 1.

[0086] Here, for example, a case will be described in which only "07011400-IDt001-GG has arrived. Has the second floor been cleaned?" is stored as chat information associated with the "group ID"="IDg005" in Fig. 9. In this case, the control unit 53 of the information sharing server 5 receives the "terminal-side request information" transmitted from the terminal device 1, and by referring to the chat history information in Fig. 9, acquires the "group name information"="guest room group (2F)" and the "chat information"="07011400-IDt001-GG has arrived. Has the second floor been cleaned?" that are associated with the same group ID as the "group ID"="IDg005" contained in the received "terminal-side request information." Based on the acquired group name information and chat information, the control unit 53 generates screen information for displaying the group chat display screen in Fig. 10, and transmits the generated screen information and "server-side response information" including the "terminal ID"="IDt005" contained in the received "terminal-side request information" to the terminal device 1.

[0087] Note that any method for generating the screen information may be used. For example, screen information may be generated in which the name of the group identified by the acquired group name information is displayed in the group name display field 61 of FIG. 10, and information corresponding to the acquired chat information is displayed in the main text display field 62. For more details about the main text display field 62, for example, the user information in FIG. 6 may be referenced to identify the name information and job type information associated with the same terminal ID as the "terminal ID" included in the acquired chat information, and then screen information is generated in which the identified name information and job type information, the date and time indicated by the "information indicating the date and time the information was shared" included in the acquired chat information, and the "shared information" included in the acquired chat information are displayed. Note that if the aforementioned "N" is stored in the acquired chat information instead of the "terminal ID," the name information and job type information cannot be identified, and therefore screen information is generated in which the name information and job type information are omitted.

[0088] Here, for example, the name of the group identified by the acquired "group name information" = "guest room group (2F)" is displayed in the group name display field 61 of Figure 10, and screen information is generated in which information corresponding to the acquired chat information is displayed in the main text display field 62. Regarding the main text display field 62 in more detail, for example, by referring to the user information in Figure 6, the "name information" = "A1" and "job type information" = "front desk" associated with the same terminal ID as the "terminal ID" = "IDt001" contained in the previously acquired "chat information" = "07011400-IDt001-GG has arrived, has the second floor been cleaned?" is identified, and screen information is generated that displays the identified "name information" = "A1" and "job type information" = "front desk", "7 / 11 14:00" indicated by "07011400" which is the "information indicating the date and time when information was shared" contained in the previously acquired chat information, and "shared information" = "GG has arrived, has the second floor been cleaned?" contained in the previously acquired chat information.

[0089] Meanwhile, the recording unit 14 of the terminal device 1 receives the "server-side response information" sent from the information sharing server 5, and if the terminal ID included in the received "server-side response information" matches the terminal ID recorded in its own recording unit 14, it regards the "server-side response information" as being intended for the terminal device 1, and generates a group chat display screen based on the screen information included in the received "server-side response information" to display on the display 13.

[0090] Here, for example, the recording unit 14 of the terminal device 105 receives the "server-side response information" transmitted from the information sharing server 5, and since the "terminal ID"="IDt005" included in the received "server-side response information" matches the "terminal ID"="IDt005" recorded in its own recording unit 14, it determines that the "server-side response information" is intended for itself, and generates the group chat display screen shown in Fig. 10 based on the screen information included in the received "server-side response information" to display on the display 13. This ends the chat information display process.

[0091] (Processing - Prediction-related processing) Next, the sign-related processing will be described. FIG. 11 is a flowchart of the sign-related processing (steps will be abbreviated as "S" in the following description of each processing), and FIG. 12 is a plan view of a portion of the second floor of the building in FIG. 1. The "sign-related processing" is, in outline, processing performed by each device of the disaster prevention system 100, and is processing related to disaster prevention when, for example, a fire sign is detected. While the timing of executing this sign-related processing is arbitrary, for example, it is assumed that repeated execution begins when each device of the disaster prevention system 100 is powered on, and the following description will begin with the start of the sign-related processing (the same applies to other processing described below). Here, for example, as shown in FIG. 12, a case where a fire breaks out in Room 1, a guest room on the second floor of a building, will be described (the same applies to other processing described below). Furthermore, communication between devices in each step is performed via a communication unit, but specific methods for this communication can be applied using known methods, and therefore, description thereof will be omitted.

[0092] 11, the control unit (not shown) of the disaster prevention receiver 3 determines whether or not a sign of a fire has occurred. While the specific details are arbitrary, for example, the detector 2 in FIGS. 1 to 3 may be configured as shown below, and the determination is made based on the signal transmitted from the detector 2.

[0093] In detail, it is assumed that detector 2 is configured as a so-called smoke detector that detects the occurrence or precursor of a fire based on the density of smoke, and that a precursor detection threshold and a fire detection threshold are stored in a recording unit (not shown) of detector 2. The "precursor detection threshold" is a threshold used to detect the precursor of a fire, and is, for example, a value that is compared with the density of smoke measured by detector 2. The "fire detection threshold" is a threshold used to detect a fire, and is, for example, a value that is compared with the density of smoke measured by detector 2, and is set to a value greater than the aforementioned "precursor detection threshold." It is assumed that detector 2 operates, for example, as follows.

[0094] Specifically, the control unit (not shown) of detector 2 compares the smoke concentration it measures with the "precursor detection threshold" stored in the recording unit, and if the measured smoke concentration is lower than the "precursor detection threshold," it determines that no signs of a fire have occurred.On the other hand, if the measured smoke concentration is equal to or higher than the "precursor detection threshold," it determines that a precursor of a fire has occurred (i.e., it detects that a precursor of a fire has occurred), and then obtains the equipment ID recorded in its recording unit, generates a detector-side precursor signal (a signal indicating that a precursor of a fire has occurred) including the obtained equipment ID, and transmits it to disaster prevention receiver 3.

[0095] In addition, the control unit (not shown) of detector 2 compares the smoke concentration it measures with the ``fire detection threshold'' stored in the recording unit, and if the measured smoke concentration is lower than the ``fire detection threshold,'' it determines that no fire has occurred.On the other hand, if the measured smoke concentration is equal to or higher than the ``fire detection threshold,'' it determines that a fire has occurred (i.e., detects that a fire has occurred), obtains the equipment ID recorded in its recording unit, and generates a detector-side fire signal (a signal indicating that a fire has occurred) including the obtained equipment ID and transmits it to the disaster prevention receiver 3.

[0096] More specifically, when the control unit of the disaster prevention receiver 3 has not received a detector-side warning signal from the detector 2, it determines that no signs of a fire have occurred (NO in SA1) and repeatedly executes SA1 until it determines that signs of a fire have occurred. When the control unit of the disaster prevention receiver 3 has received a detector-side warning signal from the detector 2, it determines that signs of a fire have occurred (YES in SA1) and proceeds to SA2.

[0097] 12, if a fire breaks out in Room 1, a guest room on the second floor, the smoke concentration in Room 1 will gradually increase, and when the smoke concentration measured by detector 201 reaches or exceeds the "sign of fire detection threshold" recorded in the recording unit of detector 201, detector 201 will determine that a sign of fire has occurred, acquire the "equipment ID"="IDd201" recorded in its own recording unit, generate a detector-side sign signal including the acquired "equipment ID"="IDd201", and transmit this to disaster prevention receiver 3. The control unit of disaster prevention receiver 3 then receives the detector-side sign signal from detector 201 and determines that a sign of fire has occurred (YES in SA1).

[0098] At SA2 in Figure 11, the control unit (not shown) of the disaster prevention receiver 3 acquires the equipment ID contained in the detector-side warning signal received at SA1, generates a receiver-side warning signal (a signal indicating that a fire warning has occurred) containing the acquired equipment ID, and transmits the generated receiver-side warning signal to the disaster prevention notification server 4.

[0099] Here, for example, the "equipment ID" = "IDd201" contained in the detector side warning signal received by SA1 is acquired, and a receiver side warning signal including the acquired "equipment ID" = "IDd201" is generated and transmitted to the disaster prevention notification server 4.

[0100] On the other hand, at SB1 in FIG. 11, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side predictive signal transmitted at SA2.

[0101] Here, for example, a receiver-side predictive signal including "facility ID"="IDd201" is received.

[0102] In SB2 of Fig. 11, the control unit 43 of the disaster prevention notification server 4 identifies the location where a fire warning has occurred (i.e., the warning location). Specifically, although this is optional, for example, the control unit 43 refers to the facility information in Fig. 5 to identify installation location information associated with the same facility ID as the facility ID included in the receiver-side warning signal received in SB1, and identifies the location indicated by the identified installation location information as the warning location.

[0103] Here, for example, by referring to the facility information in Figure 5, the "installation location information" = "guest room on the second floor (room 1)" associated with the same facility ID as the "facility ID" = "IDd201" contained in the receiver side warning signal received by SB1 is identified, and "room 1, a guest room on the second floor of the building," which is the location indicated by the identified "installation location information" = "guest room on the second floor (room 1)," is identified as the warning location.

[0104] At SB3 in Figure 11, the control unit 43 of the disaster prevention notification server 4 transmits to the information sharing server 5 a precursor location signal (a signal indicating that a fire precursor has occurred and the location where the fire precursor has occurred) including precursor location information indicating the precursor location identified at SB2.

[0105] Here, for example, since "Room 1, a guest room on the second floor of the building" is identified as the predictive location in the aforementioned SB2, in SB3, a predictive location signal including "predictive location information" = "Guest room on the second floor (Room 1)" is sent to the information sharing server 5 as predictive location information indicating "Room 1, a guest room on the second floor of the building."

[0106] On the other hand, in SC1 of FIG. 11, the control unit 53 of the information sharing server 5 receives the prediction location signal transmitted at SB3.

[0107] Here, for example, a premonition location signal including "premonition location information" = "guest room on the second floor (room 1)" is received.

[0108] 11, the control unit 53 of the information sharing server 5 notifies users belonging to a chat group related to the location of the fire warning that a fire warning has occurred. Specifically, although this is optional, for example, the control unit 53 may store chat information in the chat history information of FIG. 9 and notify users that the chat information has been stored.

[0109] <Storing chat information> First, to store the chat information, the notification destination group identification information in Figure 8 is referenced to identify the group ID associated with the fire occurrence location information that indicates the same location as the precursor location information included in the precursor location signal received by SC1, and the current date and time is identified using any method.After that, in the chat history information in Figure 9, information that correlates the identified current date and time, the aforementioned "N," and the fire precursor information that indicates the occurrence of a fire precursor is stored as chat information associated with the same group ID as the identified group ID.

[0110] In addition, if the warning location information included in the warning location signal received by SC1 is information that indicates a specific room number in a guest room on the second floor, such as "guest room on the second floor (room 1)," processing is performed assuming that comprehensive information including the room indicates the same location, such as "fire occurrence location information" = "guest room on the second floor" as shown in Figure 8.

[0111] In addition, the fire warning information stored as chat information is arbitrary, but for example, information indicating the warning location (for example, warning location information included in the warning location signal received by SC1) and information urging confirmation of a fire at the warning location because a fire warning has occurred (for example, message information such as "There is a risk of fire, please check") may be used.

[0112] Here, for example, by referring to the notification destination group identification information in Figure 8, the "group ID" = "IDg005" associated with the fire location information "second floor guest room" indicating the same location as the "premonition location information" = "second floor guest room (room 1)" included in the premonition location signal received by SC1 is identified, and the current date and time is identified using an arbitrary method, for example, "July 1st, 18:00," and then, in the chat history information in Figure 9, "07011800-N - There is a risk of a fire in the second floor guest room (room 1), please check" is stored as chat information associated with the same group ID as the identified group ID. Note that the fire premonition information stored as this chat information, "There is a risk of a fire in the second floor guest room (room 1), please check," includes information indicating the premonition location, "second floor guest room (room 1)" (i.e., the premonition location information included in the premonition location signal received by SC1), and information urging the user to check the premonition location because a fire premonition has occurred (i.e., message information such as "There is a risk of a fire, please check").

[0113] <Notification that chat information has been stored> Next, as in the case of "<Storing chat information>", to notify that the chat information has been stored, the notification destination group identification information in Figure 8 is referenced to identify the group ID associated with the fire location information that indicates the same location as the warning location information contained in the warning location signal received by SC1, and a push notification signal including the identified group ID (a signal indicating that new information has been stored and shared as chat information) is sent to the terminal device 1.

[0114] Here, for example, by referring to the notification destination group identification information in Figure 8, the "group ID" = "IDg005" associated with the "guest room on the second floor" which is the fire occurrence location information indicating the same location as the "guest room on the second floor (Room 1)" contained in the warning location signal received by SC1 is identified, and a push notification signal (a signal indicating that new information has been stored and shared as chat information) including the identified "group ID" = "IDg005" is sent to the terminal device 1.

[0115] Meanwhile, when the control unit 15 of the terminal device 1 receives a push notification signal, it compares the group ID included in the received push notification signal with the group IDs recorded in its own recording unit 14. If the group ID included in the received push notification signal matches any of the group IDs recorded in its own recording unit 14, it displays push notification information (information indicating that new information has been stored as chat information and shared) on the display 13. Note that the push notification here is optional. However, for example, text information or image information including information indicating the chat group identified by the group ID included in the received push notification signal may be displayed on the display 13 to notify the user of the chat group in which new information has been stored as chat information and shared. In addition, together with displaying this push notification information, the vibration function of the terminal device 1 may be turned on or a predetermined notification sound or notification voice may be output via a speaker (not shown) of the terminal device 1 to notify the user that new information has been stored as chat information and shared.

[0116] For example, when the control unit 15 of each of the terminal devices 101 to 107 receives a push notification signal including "group ID" = "IDg005," the control unit 15 compares the "group ID" = "IDg005" included in the received push notification signal with the group ID ( FIG. 4 ) recorded in its own recording unit 14. However, since the terminal devices 101, 105, and 106 have recorded in their own recording units 14 the same group ID as the "group ID" = "IDg005" included in the received push notification signal, the control unit 15 displays the push notification information on the display 13. In this case, text information "Guest Room Group (2F)" is also displayed as information indicating the chat group identified by the "group ID" = "IDg005" included in the received push notification signal. However, since the terminal devices 102 to 104 and 107 do not have recorded in their own recording units 14 the same group ID as the "group ID" = "IDg005" included in the received push notification signal, the control unit 15 does not display the push notification information.

[0117] Fig. 13 is a diagram illustrating a group chat display screen. When the user of the terminal device 1 visually recognizes the above-described push notification information and recognizes that new information has been stored and shared as chat information and the chat group in which the new information has been stored and shared, and selects the chat group in which the new information has been stored and shared as the chat group for which information is to be displayed by performing a predetermined operation via the touchpad 12 as described in the "chat information display process," the control unit 15 of the terminal device 1 performs communication regarding the "terminal-side request information" and the "server-side response information" as described above, and then displays, for example, the group chat display screen of Fig. 13 on the display 13.

[0118] Here, for example, when "A5", a second floor cleaner who is a user of the terminal device 105 who visually recognizes the above-mentioned push notification information, recognizes that new information has been stored and shared as chat information and that the chat group in which the new information has been stored and shared is the "guest room group (2F)", and, as described in the "chat information display process", selects, by a predetermined operation performed via the touchpad 12, one of the chat groups "guest room group (2F)" identified by "IDg005" from among "group ID"="IDg003, IDg005, IDg007, ..." stored in the recording unit 14 of the terminal device 105 as the chat group for which information is to be displayed, the control unit 15 of the terminal device 105 transmits "terminal side request information" including "terminal ID"="IDt005" and "group ID"="IDg005" to the information sharing server 5.

[0119] On the other hand, the control unit 53 of the information sharing server 5 receives the “terminal-side request information” transmitted from the terminal device 1, and by referring to the chat history information of FIG. 9 , acquires “group name information” = “guest room group (2F)”, “chat information” = “07011400-IDt001-Dear GG, you have arrived. Has the second floor been cleaned?”, “07011401-IDt005-Cleaning has been completed”, and “07011800-N-There is a risk of fire in guest room 1 on the second floor, please check”, which are associated with the same group ID as the “group ID” = “IDg005” contained in the received “terminal-side request information”. Based on the acquired group name information and chat information, the control unit 53 generates screen information for displaying the group chat display screen of FIG. 13 , and transmits the generated screen information and “server-side response information” including the “terminal ID” = “IDt005” contained in the received “terminal-side request information”, thereby displaying the group chat display screen of FIG. 13 on the display 13 of the terminal device 105. In addition, on the group chat display screen, by actually performing a predetermined operation (for example, swiping) via the touchpad 12, information corresponding to "07011400-IDt001-GG has arrived, has the second floor been cleaned?" (see Figure 10) and "07011401-IDt005-Cleaning has been completed" will also be displayed, but on the initial screen, information corresponding to the most recently stored chat information may be displayed in an easy-to-see position (for example, near the top of the screen).

[0120] When "A1", a front desk attendant, and "A6", a second-floor facility attendant, who are users of the terminal devices 101 and 106 and who have visually recognized the above-mentioned push notification information, perform the same operation as "A5", the group chat display screen of Fig. 13 is displayed on the terminal devices 101 and 106. Note that the terminal devices 101, 105, and 106 here may be interpreted as corresponding to the "first mobile terminal".

[0121] In SC3 of Fig. 11, the control unit 53 of the information sharing server 5 determines whether to issue an instruction to extinguish the fire with a fire extinguisher. Specifically, although this is optional, for example, since the information input by each user in the aforementioned "chat information storage process" is stored in the chat information in the chat history information of Fig. 9, i.e., when a hotel employee inputs information about the outbreak of a fire, the information about the outbreak of the fire is stored in the chat information, the chat information is monitored and the following process is performed. The chat information to be monitored here is optional; for example, all chat information may be monitored, or chat information associated with a chat group to which the user who notified the occurrence of a fire warning sign in SC2 belongs may be monitored. In this embodiment, the latter case will be described as an example.

[0122] 9, the control unit 53 of the information sharing server 5 identifies the group ID for which chat information has been stored in "<Storage of chat information>" of SC2 (i.e., identifies the group ID identified in "<Storage of chat information>"), and identifies the chat group identified by the identified group ID as the chat group to be monitored. Next, the control unit 53 monitors the chat information associated with the group ID for identifying the identified chat group to be monitored in the chat history information of FIG. 9, and determines whether information indicating a confirmed fire outbreak (in this embodiment, for example, information including the words "fire outbreak" or "fire") has been stored after storing the chat information in "<Storage of chat information>" of SC2. If the control unit 53 determines that information indicating a confirmed fire outbreak has not been stored, the control unit 53 determines that there is a possibility of a false alarm by the detector 2, that there is no actual fire, and therefore determines not to issue an instruction to extinguish the fire with a fire extinguisher (NO in SC3), and repeatedly executes SC3 until it determines that an instruction to extinguish the fire with a fire extinguisher should be issued. In this case, if it is not determined that an instruction to extinguish the fire with a fire extinguisher should be issued within a predetermined time (e.g., 10 to 20 minutes) from the time the chat information was stored in "<Storing chat information>" in SC2, the process may be terminated. On the other hand, if it is determined that information indicating that a fire has been confirmed has been stored, it is determined that a fire has actually broken out and that an instruction to extinguish the fire with a fire extinguisher should be issued (YES in SC3), and the process proceeds to SC4.

[0123] Here, for example, if a user "A6", a facility attendant on the second floor, visually checks the group chat display screen of FIG. 13 displayed on SC2, visits Room 1, which is a guest room on the second floor of FIG. 12, and confirms that a fire has broken out, and then, by performing a predetermined operation via the touchpad 12, selects the chat group "Guest Room Group (2F)" corresponding to the group chat display screen of FIG. 13 as the chat group with which to share information (i.e., "Guest Room Group (2F)" identified by "IDg005" among "Group ID" = "IDg004, IDg005, IDg007, ..." stored in the recording unit 14 of the terminal device 106), and inputs "A fire has been confirmed" as information to be shared in the "Guest Room Group (2F)", the control unit 15 of the terminal device 106 will transmit "information to be stored on the terminal side" including "terminal ID" = "IDt006", "group ID" = "IDg005", and "input information" = "A fire has been confirmed" to the information sharing server 5.

[0124] Meanwhile, the control unit 53 of the information sharing server 5 receives the "information to be stored on the terminal side" sent from the terminal device 1, and identifies the current date and time, for example, "July 1st, 18:05," using any method, and then stores "chat information" = "07011805-IDt006-Fire confirmed" in the chat history information of Figure 9 based on the identified current date and time and the received "information to be stored on the terminal side."

[0125] In this case, in SC3 of Figure 11, the control unit 53 of the information sharing server 5 refers to the chat history information in Figure 9, identifies the "group ID" = "IDg005" that stored the chat information in "<Storage of chat information>" of SC2, and identifies the chat group of "Guest room group (2F)" identified by the identified group ID as the chat group to be monitored. Next, the chat information associated with "Group ID" = "IDg005" which identifies the chat group of the "Guest Room Group (2F)" that is the aforementioned identified monitoring target in the chat history information of Figure 9 is monitored. In "<Store Chat Information>" of SC2, after storing "Chat Information" = "07011800-N-There is a risk of fire in guest room on the 2nd floor (Room 1), please check", "Chat Information" = "07011805-IDt006-Fire has been confirmed" is stored, and since the chat information contains the word "fire", it is determined that information indicating that a fire has been confirmed has been stored, and it is determined that an instruction should be given to extinguish the fire with a fire extinguisher (YES in SC3).

[0126] Fig. 14 is a diagram illustrating a group chat display screen. Note that after "07011805-IDt006-Fire confirmed" is stored as chat information in the chat history information of Fig. 9, if a user belonging to the chat group "Guest Room Group (2F)" selects "Guest Room Group (2F)" as the chat group for displaying information, the above-mentioned "chat information display process" is executed, and the group chat display screen of Fig. 14 including information corresponding to "07011805-IDt006-Fire confirmed" is displayed on the display 13 of the terminal device 1 carried by the user.

[0127] 11, the control unit 53 of the information sharing server 5 notifies the users belonging to the chat group corresponding to the initial fire extinguishing group of an instruction to extinguish the fire with a fire extinguisher. Specifically, although this is optional, for example, similar to the case of SC2, the control unit 53 stores the chat information in the chat history information in FIG. 9 and notifies the users that the chat information has been stored.

[0128] <Storing chat information> First, to store the chat information, the chat group identification information in Figure 7 is referenced to identify the group ID that identifies the "initial fire extinguishing group," and the current date and time is identified using any method.Then, in the chat history information in Figure 9, information that correlates the identified current date and time, the "N," and fire extinguisher extinguishing instruction information that instructs the user to extinguish the fire with a fire extinguisher is stored as chat information associated with the same group ID as the identified group ID.

[0129] The fire extinguisher instruction information stored as chat information is arbitrary, but for example, information including information indicating the location of the warning sign (for example, warning sign location information included in the warning sign location signal received in SC1) will be used, similar to the fire warning sign information described in SC2.

[0130] Here, for example, the chat group identification information in Fig. 7 is referenced to identify the "group ID" = "IDg008" that identifies the "initial fire extinguishing group," and the current date and time is identified by any method, for example, "July 1st, 18:05," and then, in the chat history information in Fig. 9, "07011805-N-Please extinguish the fire in the guest room (room 1) on the second floor with a fire extinguisher" is stored as chat information associated with the same group ID as the identified "group ID" = "IDg008." Note that the fire extinguisher extinguishing instruction information stored as this chat information, "Please extinguish the fire in the guest room (room 1) on the second floor with a fire extinguisher," includes information indicating the warning location, "guest room (room 1) on the second floor" (i.e., the warning location information included in the warning location signal received by SC1).

[0131] <Notification that chat information has been stored> Next, to notify that the chat information has been stored, similar to the case of "<Storing chat information>", the chat group identification information in Figure 7 is referenced to identify the group ID that identifies the "initial fire extinguishing group", and a push notification signal including the identified group ID is sent to the terminal device 1.

[0132] Here, for example, by referring to the chat group identification information in Figure 7, the "group ID" = "IDg008" that identifies the "initial fire extinguishing group" is identified, and then a push notification signal including the identified "group ID" = "IDg008" is sent to the terminal device 1.

[0133] On the other hand, when the control unit 15 of the terminal device 1 receives a push notification signal, it performs processing similar to that described in SC2 to appropriately display the push notification information on the display 13, and also displays information indicating the chat group identified by the group ID included in the push notification signal, in the same manner as described in SC2.

[0134] Here, for example, terminal devices 101 to 107 receive a push notification signal including "group ID"="IDg008". However, as shown in FIG. 4, only terminal devices 102 and 104 store "group ID"="IDg008". Therefore, terminal devices 102 and 104 display the push notification information on display 13 and also display text information "initial fire-fighting group" as information indicating the chat group identified by "group ID"="IDg008" included in the push notification signal.

[0135] 15 is a diagram illustrating a group chat display screen. When the user of the terminal device 1 visually recognizes that new information has been stored and shared as chat information and recognizes the chat group in which the new information has been stored and shared, and selects the chat group in which the new information has been stored and shared as the chat group for which information is to be displayed by performing a predetermined operation via the touchpad 12 as described in the "chat information display process," the control unit 15 of the terminal device 1 performs communication regarding the "terminal-side request information" and the "server-side response information" as described above, and then displays, for example, the group chat display screen of FIG. 15 on the display 13.

[0136] Here, for example, when "A4", a cloakroom worker who is a user of terminal device 104 who visually recognizes the above-mentioned push notification information, recognizes that new information has been stored and shared as chat information and that the chat group in which the new information has been stored and shared is the "initial fire extinguishing group", and, as described in the "chat information display process", selects, by a predetermined operation performed via touchpad 12, one of the chat groups of "initial fire extinguishing group" identified by "IDg008" from "group ID"="IDg001, IDg007, IDg008, ..." stored in the recording unit 14 of terminal device 104 as the chat group for which information is to be displayed, the control unit 15 of terminal device 104 transmits "terminal side request information" including "terminal ID"="IDt004" and "group ID"="IDg008" to the information sharing server 5.

[0137] Here, we will explain the case where, for example, the only chat information stored as associated with "Group ID" = "IDg008" in Figure 9 is "07011805-N-Please use a fire extinguisher to extinguish the fire in guest room (Room 1) on the second floor." In this case, the control unit 53 of the information sharing server 5 receives the “terminal-side request information” sent from the terminal device 1, and by referring to the chat history information in FIG. 9, acquires the “group name information” = “initial fire extinguishing group” and “chat information” = “07011805-N-Please extinguish the fire in the second floor guest room (room 1) with a fire extinguisher” that are associated with the same group ID as the “group ID” = “IDg008” included in the received “terminal-side request information.” Based on the acquired group name information and chat information, the control unit 53 generates screen information for displaying the group chat display screen of FIG. 15, and displays the group chat display screen of FIG. 15 on the display 13 of the terminal device 104 by transmitting the generated screen information and “server-side response information” including the “terminal ID” = “IDt004” included in the received “terminal-side request information.”

[0138] If "A2" of Belstaff, who is a user of the terminal device 102 and who has visually recognized the above-mentioned push notification information, performs the same operation as "A4," the group chat display screen of FIG. 15 is displayed on the terminal device 102.

[0139] In this case, users "A2" and "A4", who belong to the initial fire extinguishing group, will recognize by viewing the group chat display screen in Figure 15 that they need to extinguish the fire with a fire extinguisher in Room 1, a guest room on the second floor, and will go to Room 1, a guest room on the second floor shown in Figure 12, and use the fire extinguisher to extinguish the fire.

[0140] In SC5 of Fig. 11, the control unit 53 of the information sharing server 5 determines whether to issue an instruction to extinguish the fire with a fire hydrant. Specifically, although this is optional, for example, since the information entered by each user in the aforementioned "chat information storage process" is stored in the chat information in the chat history information of Fig. 9, that is, when a hotel employee (e.g., a user belonging to the initial fire extinguishing group) enters information related to fire extinguishing, the information related to fire extinguishing is stored in the chat information, the chat information is monitored and the following process is performed. The chat information to be monitored here is optional, and for example, all chat information may be monitored, or chat information associated with the chat group to which the user who issued the instruction to extinguish the fire with a fire extinguisher in SC4 belongs may be monitored. In this embodiment, the latter case will be described as an example.

[0141] 9, the control unit 53 of the information sharing server 5 identifies the group ID for which the chat information is stored in "<Storage of chat information>" of SC4 (i.e., identifies the group ID identified in "<Storage of chat information>"), and identifies the chat group identified by the identified group ID as the chat group to be monitored. Next, the control unit 53 monitors the chat information associated with the group ID for identifying the identified chat group to be monitored in the chat history information of FIG. 9, and after storing the chat information in "<Storage of chat information>" of SC4, determines whether information indicating that extinguishing the fire with a fire extinguisher is difficult (in this embodiment, information including the words "difficult" or "challenging") has been stored. If it determines that information indicating that extinguishing the fire is difficult has not been stored, it determines that an instruction to extinguish the fire with a fire hydrant should not be issued (NO in SC5), and repeatedly executes SC5 until it determines that an instruction to extinguish the fire with a fire hydrant should be issued. In this case, if it is not determined that an instruction to extinguish the fire with a fire hydrant should be given within a predetermined time (e.g., 20 to 30 minutes) from the time the chat information is stored in "<Storing chat information>" in SC5, it may be determined that the fire has been extinguished with a fire extinguisher and the processing may end. Also, if it is determined that information indicating that extinguishing the fire is difficult has been stored, it is determined that the fire has not been extinguished sufficiently with the fire extinguisher and that an instruction to extinguish the fire with a fire hydrant should be given (YES in SC5), and the processing proceeds to SC6.

[0142] Here, for example, if a user "A4" who works in the cloakroom visits Room 1, which is a guest room on the second floor in Figure 12, and attempts to extinguish the fire with a fire extinguisher but is unable to put out the fire, and selects, by a predetermined operation via the touchpad 12, the "initial fire extinguishing group," which is the chat group corresponding to the group chat display screen in Figure 15, as the chat group with which to share information, and then enters "The fire is difficult to extinguish" as information to be shared with the "initial fire extinguishing group," the control unit 15 of the terminal device 104 will send "information to be stored on the terminal side" including "terminal ID" = "IDt004," "group ID" = "IDg008," and "input information" = "The fire is difficult to extinguish," to the information sharing server 5.

[0143] Meanwhile, the control unit 53 of the information sharing server 5 receives the "information to be stored on the terminal side" sent from the terminal device 1, and identifies the current date and time, for example, "July 1st, 18:10" using any method, and then stores the "chat information" = "07011810-IDt004-Fire extinguishing is difficult" in the chat history information of Figure 9 based on the identified current date and time and the "information to be stored on the terminal side" received above.

[0144] In this case, in SC5 of Figure 11, the control unit 53 of the information sharing server 5 refers to the chat history information in Figure 9, identifies the ``group ID'' = ``IDg008'' that stored the chat information in ``<Storage of chat information>'' of SC4, and identifies the chat group of the ``initial fire extinguishing group'' identified by the identified group ID as the chat group to be monitored. Next, the chat information associated with "Group ID" = "IDg008" which identifies the chat group of the "Initial Firefighting Group" that is the identified monitoring target in the chat history information of Figure 9 is monitored. After storing "Chat Information" = "07011805-N-Please use a fire extinguisher to extinguish the fire in the guest room on the second floor (Room 1)," in "<Storing Chat Information>" of SC4, "Chat Information" = "07011810-IDt004-The fire is difficult to extinguish" is stored, and since the chat information contains the word "difficult," it is determined that information indicating that extinguishing the fire is difficult has been stored, and it is determined that instructions should be given to extinguish the fire using a fire hydrant (YES in SC5).

[0145] Fig. 16 is a diagram illustrating a group chat display screen. Note that after "07011810-IDt004-Fire extinguishing is difficult" is stored as chat information in the chat history information of Fig. 9, if a user belonging to the chat group "initial fire extinguishing group" selects "initial fire extinguishing group" as the chat group for which information is to be displayed, the above-mentioned "chat information display process" is executed, and the group chat display screen of Fig. 16 including information corresponding to "07011810-IDt004-Fire extinguishing is difficult" is displayed on the display 13 of the terminal device 1 carried by the user.

[0146] 11, the control unit 53 of the information sharing server 5 notifies the users who belong to the chat group corresponding to the initial fire extinguishing group of an instruction to extinguish the fire using a fire hydrant. Specifically, this is optional and is the same as the processing in SC4, and stores the chat information in the chat history information in FIG. 9 and notifies the users that the chat information has been stored.

[0147] <Storing chat information> First, to store the chat information, the chat group identification information in Figure 7 is referenced to identify the group ID that identifies the "initial fire extinguishing group," and the current date and time is identified using any method.Then, in the chat history information in Figure 9, information that correlates the identified current date and time, the "N," and the hydrant fire extinguishing instruction information that instructs the fire to be extinguished using a fire hydrant is stored as chat information associated with the same group ID as the identified group ID.

[0148] Here, for example, by referring to the chat group identification information in Figure 7, the "group ID" = "IDg008" that identifies the "initial fire extinguishing group" is identified, and the current date and time is identified using any method, for example, "July 1st, 18:10," and then in the chat history information in Figure 9, "07011810-N-Please use the fire hydrant to extinguish the fire in guest room 1 on the second floor" is stored as chat information associated with the same group ID as the identified "group ID" = "IDg008" mentioned above.

[0149] <Notification that chat information has been stored> Next, regarding the notification that the chat information has been stored, by performing processing similar to that of "<Notification that chat information has been stored>" in SC4, the terminal devices 102 and 104 display the push notification information on the display 13, and also display and notify the user of the text information "Initial fire extinguishing group" as information indicating the chat group identified by the "group ID"="IDg008" included in the push notification signal.

[0150] 17 is a diagram illustrating a group chat display screen. When a user of the terminal device 1 visually recognizes the push notification information and selects the chat group in which the new information is stored and shared as the chat group for which information is to be displayed by performing a predetermined operation via the touchpad 12 as described in the "chat information display process," the control unit 15 of the terminal device 1 performs communication regarding the "terminal-side request information" and the "server-side response information" as described above, and then displays, for example, the group chat display screen of FIG. 17 on the display 13.

[0151] Here, for example, if "A4", a cloakroom worker who is a user of terminal device 104 and who has viewed the above-mentioned push notification information, selects one chat group, "initial fire extinguishing group", as the chat group for which information is to be displayed by performing a predetermined operation via touchpad 12 as described in "Chat information display process", then control unit 15 of terminal device 104 will send "terminal side request information" including "terminal ID" = "IDt004" and "group ID" = "IDg008" to information sharing server 5.

[0152] Meanwhile, the control unit 53 of the information sharing server 5 receives the "terminal-side request information" transmitted from the terminal device 1, and refers to the chat history information in FIG. 9 to determine whether the "group name information" = "initial fire-extinguishing group" and the "chat information" = "07011805-N-Please use a fire extinguisher to extinguish the fire in the guest room (room 1) on the second floor" and "07011810-IDt004-Fire extinguishing is difficult" are associated with the same group ID as the "group ID" = "IDg008" contained in the received "terminal-side request information." , and "07011810-N-Please use the fire hydrant to extinguish the fire in the guest room (room 1) on the second floor," and based on the acquired group name information and chat information, screen information for displaying the group chat display screen of Figure 17 is generated, and the generated screen information and "server-side response information" including the "terminal ID" = "IDt004" contained in the received "terminal-side request information" are sent, thereby displaying the group chat display screen of Figure 17 on the display 13 of the terminal device 104.

[0153] If "A2" of Belstaff, who is a user of the terminal device 102 and who has visually recognized the above-mentioned push notification information, performs the same operation as "A4," the group chat display screen of FIG. 17 is displayed on the terminal device 102.

[0154] In this case, users "A2" and "A4" who belong to the initial fire extinguishing group will recognize that they need to extinguish the fire with a fire hydrant in Room 1, a guest room on the second floor, by viewing the group chat display screen in Figure 17, and will go to Room 1, a guest room on the second floor shown in Figure 12, and use the fire hydrant to extinguish the fire. This ends the sign-related processing.

[0155] (Treatment - Fire-related treatment) Next, the fire-related processing will be explained. Fig. 18 is a flowchart of the fire-related processing, and Fig. 19 is a diagram showing an example of a group chat display screen. The "fire-related processing" is, in outline, processing performed by each device of the disaster prevention system 100, and is, for example, processing related to disaster prevention in the event of a fire.

[0156] In SD1 of Fig. 18, the control unit (not shown) of the disaster prevention receiver 3 determines whether or not a fire has occurred. While the specific details are arbitrary, for example, the determination may be made based on the reception of the aforementioned detector-side fire signal. In more detail, if the control unit of the disaster prevention receiver 3 has not received a detector-side fire signal from the detector 2, it determines that no fire has occurred (NO in SD1) and repeatedly executes SD1 until it determines that a fire has occurred. Furthermore, if the control unit of the disaster prevention receiver 3 has received a detector-side fire signal from the detector 2, it determines that a fire has occurred (YES in SD1) and proceeds to SD2.

[0157] 12, if a fire breaks out in Room 1, a guest room on the second floor, the smoke concentration in Room 1 will gradually increase, and when the smoke concentration measured by detector 201 reaches or exceeds the "fire detection threshold" recorded in the recording unit of detector 201, detector 201 will determine that a fire has occurred, acquire the "equipment ID"="IDd201" recorded in its own recording unit, generate a detector-side fire signal including the acquired "equipment ID"="IDd201", and transmit this to disaster prevention receiver 3. The control unit of disaster prevention receiver 3 then receives the detector-side fire signal from detector 201 and determines that a fire has occurred (YES in SD1).

[0158] At SD2 in Figure 18, the control unit (not shown) of the disaster prevention receiver 3 acquires the equipment ID contained in the detector-side fire signal received at SD1, generates a receiver-side fire signal (a signal indicating that a fire has occurred) containing the acquired equipment ID, and transmits the generated receiver-side fire signal to the disaster prevention notification server 4.

[0159] Here, for example, the "equipment ID" = "IDd201" contained in the detector-side fire signal received by SD1 is acquired, and a receiver-side fire signal including the acquired "equipment ID" = "IDd201" is generated and transmitted to the disaster prevention notification server 4.

[0160] On the other hand, in SE1 of FIG. 18, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side fire signal transmitted at SD2.

[0161] Here, for example, a receiver-side fire signal containing "equipment ID" = "IDd201" is received.

[0162] 18, the control unit 43 of the disaster prevention notification server 4 identifies the location where the fire occurred (i.e., the location of the fire). Although the specific method is arbitrary, the location of the fire may be identified in the same manner as in SB2 of FIG.

[0163] Here, for example, by referring to the equipment information in Figure 5, the "Installation location information" = "Guest room on the second floor (Room 1)" associated with the same equipment ID as the "Equipment ID" = "IDd201" contained in the receiver side fire signal received by SE1 is identified, and "Room 1, a guest room on the second floor of the building," which is the location indicated by the "Installation location information" = "Guest room on the second floor (Room 1)," is identified as the location of the fire.

[0164] In SE3 of Figure 18, the control unit 43 of the disaster prevention notification server 4 transmits an occurrence location signal (a signal indicating that a fire has occurred and the location where the fire has occurred) including occurrence location information indicating the occurrence location identified in SE2 to the information sharing server 5.

[0165] Here, for example, since "Room 1, a guest room on the second floor of the building" was identified as the location of occurrence in the aforementioned SE2, in SE3, an occurrence location signal including "occurrence location information" = "Guest room on the second floor (Room 1)" is sent to the information sharing server 5 as occurrence location information indicating "Room 1, a guest room on the second floor of the building."

[0166] On the other hand, in SF1 of FIG. 18, the control unit 53 of the information sharing server 5 receives the occurrence location signal transmitted by SE3.

[0167] Here, for example, a generation location signal including "generation location information" = "guest room on the second floor (room 1)" is received.

[0168] In SF2 of Fig. 18, the control unit 53 of the information sharing server 5 notifies users belonging to a chat group related to the location of the fire that a fire has occurred. Specifically, although this is optional, similar to SC2 of Fig. 11, for example, chat information is stored in the chat history information of Fig. 9, and a notification is given that the chat information has been stored. The processing here is similar to SC2 of Fig. 11, so only a specific example will be described.

[0169] <Storing chat information>

[0170] Here, for example, by referring to the notification group identification information in Figure 8, the "group ID" = "IDg005" associated with the fire location information "guest room on the second floor" which indicates the same location as the "occurrence location information" = "guest room on the second floor (room 1)" contained in the occurrence location signal received by SF1 is identified, and the current date and time is identified using any method, for example, to be "July 1st, 18:40", and then in the chat history information in Figure 9, "07011840-N-Fire in guest room on the second floor (room 1), please call 119" is stored as chat information associated with the same group ID as the identified group ID.

[0171] <Notification that chat information has been stored> Here, for example, by referring to the notification group identification information in Figure 8, the "group ID" = "IDg005" associated with the fire location information "2nd floor guest room" which indicates the same location as the "occurrence location information" = "2nd floor guest room (Room 1)" contained in the occurrence location signal received by SF1 is identified, and a push notification signal (a signal indicating that new information has been stored and shared as chat information) including the identified "group ID" = "IDg005" is sent to terminal device 1, thereby displaying the push notification information on terminal devices 101, 105, and 106.

[0172] On the other hand, for example, if "A5," a second-floor cleaner who is a user of the terminal device 105 and who has visually recognized the above-mentioned push notification information, selects one chat group, "Guest Room Group (2F)," as the chat group for which information is to be displayed, by performing a predetermined operation on the touchpad 12, the group chat display screen of Fig. 19 will be displayed on the display 13. This ends the fire-related processing.

[0173] (Processing - Fire level determination related processing) Next, the fire level determination related processing will be explained. Fig. 20 is a flowchart of the fire level determination related processing, and Fig. 21 is a diagram showing an example of a group chat display screen. The "fire level determination related processing" is, in outline, processing performed by each device of the disaster prevention system 100, and is, for example, processing related to disaster prevention when a fire is determined to be a fire level.

[0174] In SG1 of FIG. 20, a control unit (not shown) of the disaster prevention receiver 3 determines whether or not to determine the fire level of the occurrence of a fire. While the specific details are arbitrary, the determination may be made based on, for example, whether or not a predetermined fire level determination condition is met. The "predetermined fire level determination condition" refers to a condition for determining whether a fire should be determined as a fire level determination condition. While known conditions can be applied, this embodiment describes a case in which first to third fire level determination conditions are used. The "first fire level determination condition" is, for example, receiving detector-side fire signals from a plurality of detectors 2. The "second fire level determination condition" is, for example, receiving from the fire transmitter side a signal indicating that a user has pressed a button on a known fire transmitter (not shown) installed in the building. The "third fire level determination condition" is, for example, receiving information indicating that a known fire level determination button (not shown) installed in the disaster prevention receiver 3 has been pressed by a user. In detail, if none of the first to third fire level determination conditions is met, the control unit of the disaster prevention receiver 3 determines that the occurrence of a fire should not be determined as a fire level (NO in SG1), and repeatedly executes SG1 until it determines that the occurrence of a fire should be determined as a fire level. Also, if at least one of the first to third fire level determination conditions is met, it determines that the occurrence of a fire should be determined as a fire level (YES in SG1), and proceeds to SG2.

[0175] 12, if a fire that broke out in Room 1, a guest room on the second floor, spreads to Room 2, and the smoke density measured by detectors 201 and 202 exceeds the "fire detection threshold" recorded in the recording units of the detectors 201 and 202, the detectors 201 and 202 determine that a fire has occurred, and then generate and transmit a detector-side fire signal to the disaster prevention receiver 3 in the same manner as described above. The control unit of the disaster prevention receiver 3 then receives the detector-side fire signal from the detectors 201 and 202, and since the "first fire level determination condition" is met, the control unit of the disaster prevention receiver 3 determines that the occurrence of the fire should be determined to be a fire level (YES in SG1).

[0176] 20, the control unit (not shown) of the disaster prevention receiver 3 generates a receiver-side fire level determination signal (a signal indicating that the occurrence of a fire has been determined to be a fire level) and transmits the generated receiver-side fire level determination signal to the disaster prevention notification server 4. In this case, the disaster prevention receiver 3 may issue a fire alert by issuing a district bell or an emergency broadcast, as in the conventional case.

[0177] On the other hand, in SH1 of FIG. 20, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side fire level determination signal transmitted at SG2.

[0178] In SH2 of Figure 20, the control unit 43 of the disaster prevention notification server 4 transmits a fire level determination signal (a signal indicating information similar to the receiver-side fire level determination signal, i.e., a signal indicating that the occurrence of a fire has been determined to be a fire level) to the information sharing server 5.

[0179] On the other hand, in SI1 of FIG. 20, the control unit 53 of the information sharing server 5 receives the fire level determination signal transmitted in SH2.

[0180] In SI2 of Fig. 20, the control unit 53 of the information sharing server 5 notifies all users belonging to the chat group corresponding to "all employees" that the occurrence of a fire has been determined to be a fire level. Specifically, although this is optional, similar to SC4 of Fig. 11, for example, chat information is stored in the chat history information of Fig. 9, and a notification is issued that the chat information has been stored. The processing here is generally similar to SC4 of Fig. 11, so only a specific example will be described.

[0181] <Storing chat information>

[0182] Here, for example, by referring to the chat group identification information in Figure 7, the "group ID" = "IDg007" that identifies "all employees" is identified, and then, using any method, the current date and time is identified, for example, as "July 1st, 19:00," and then, in the chat history information in Figure 9, "07011900-N-Fire has broken out in building, please guide people to evacuate" is stored as chat information associated with the same group ID as the identified "group ID" = "IDg007" mentioned above.

[0183] <Notification that chat information has been stored>

[0184] Here, for example, by referring to the chat group identification information in FIG. 7, the "group ID" = "IDg007" that identifies "all employees" is identified, and then a push notification signal including the identified "group ID" = "IDg007" is sent to terminal device 1, thereby displaying the push notification information on terminal devices 101 to 107.

[0185] On the other hand, for example, if a user of a terminal device 101 to 107 who visually recognizes the above-mentioned push notification information selects one chat group, "All Employees," as the chat group for which information is to be displayed by performing a predetermined operation on the touchpad 12, the group chat display screen of Fig. 21 will be displayed on the display 13. This ends the fire level determination related processing.

[0186] (Effects of the embodiment) According to this embodiment, fire warning information indicating that a fire warning has occurred is sent to a terminal device 1 (first mobile terminal) among the multiple terminal devices 1 that is pre-associated with the location indicated by the warning location information, and information instructing the terminal device 1 (second mobile terminal) that is pre-determined among the multiple terminal devices 1 to extinguish the fire is also sent to a predetermined terminal device 1 (second mobile terminal). This makes it possible to notify some users (for example, employees who are involved in the management or operation of the facility to which the disaster prevention system 100 is applied) of the fire warning signs at an early stage before the fire spreads and have them take action to extinguish the fire, thereby improving disaster prevention capabilities.

[0187] Furthermore, by transmitting information instructing the use of a fire extinguisher, it is possible to specifically notify the fire extinguishing equipment, for example, a fire extinguisher, thereby preventing delays in the initial firefighting activities due to confusion over which fire extinguishing equipment to select.

[0188] Furthermore, when information is received indicating that it is difficult to extinguish a fire using a fire extinguisher, information can be sent instructing the use of a fire hydrant, which, for example, allows firefighting activities to be carried out using appropriate equipment to extinguish the fire, thereby improving disaster prevention capabilities.

[0189] [Modifications to the embodiment] Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions set forth in the claims. Such modifications will be described below.

[0190] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and may vary depending on the implementation environment of the invention and the details of the configuration, and may solve only some of the problems described above or achieve only some of the effects described above.

[0191] (Regarding decentralization and integration) Furthermore, the above-described configuration is a functional concept and does not necessarily have to be physically configured as shown in the figure. In other words, the specific form of distribution or integration of each part is not limited to that shown in the figure, and all or part of it can be functionally or physically distributed or integrated in any unit. For example, the function of the disaster prevention notification server 4 may be incorporated into the disaster prevention receiver 3. In this case, the disaster prevention receiver 3 incorporating the function of the disaster prevention notification server 4 may be interpreted as corresponding to the "fire alarm system."

[0192] (Notification of information) In the above embodiment, the case has been described where the group chat display screen is displayed when the user selects a chat group for which information is to be displayed by performing a predetermined operation via the touchpad 12 after performing the processes of "<Storing chat information>" and "<Notifying that chat information has been stored>" in SC2 in Fig. 11, but this is not limiting. For example, the group chat display screen may be configured to be displayed on the display 13 of the terminal device 1 regardless of the predetermined operation by the user.

[0193] Specifically, the control unit 15 of the terminal device 1 that received the push notification signal may perform the following process, for example, after the “<Storage of chat information>” and “<Notification that chat information has been stored>” in SC2. The control unit 15 compares the group ID included in the received push notification signal with the group IDs stored in its own storage unit 14. If the group ID included in the received push notification signal matches any of the group IDs stored in its own storage unit 14, the control unit 15 may perform the following process instead of or in addition to displaying the push notification information. Specifically, the control unit 15 acquires the group ID included in the received push notification signal and the terminal ID stored in its own storage unit 14, and then transmits “terminal-side request information” including the acquired group ID and terminal ID to the information sharing server 5. This receives “server-side response information” in the same manner as described in the “chat information display process.” Based on the received “server-side response information,” the control unit 15 generates a group chat display screen and displays it on the display 13. This process enables automatic display of fire warning information, etc., regardless of a specific operation by the user. The technology described here may be applied to SC4 and SC6 in FIG. 11, SF2 in FIG. 18, and SG2 in FIG. 20, and configured to automatically display each piece of information on the terminal device 1 side at each step.

[0194] (Other features) Furthermore, although the detector 2 is described as detecting a sign of a fire or the occurrence of a fire, this is not limiting. The detector 2 may transmit a predetermined physical quantity that it detects to the disaster prevention receiver 3, and the disaster prevention receiver 3 may detect a sign of a fire or the occurrence of a fire based on the predetermined physical quantity received.

[0195] Furthermore, when notifying the next-stage group chat, the information sharing server 5 may display in the next-stage group chat a log of the previous-stage group chat that includes messages from the notification from the information sharing server 5 regarding the fire to the message that is deemed to be an instruction. For example, when displaying "Please use a fire extinguisher to extinguish the fire in the guest room on the second floor (room 1)," as shown in Fig. 15 on the group chat display screen of the "initial fire extinguishing group," messages such as "Please check for the risk of fire in the guest room on the second floor (room 1)" and "Fire has been confirmed" may be displayed before that as a log of the previous-stage group chat.

[0196] Furthermore, the administrator may be able to check the logs of multiple or all messages in chat groups related to a certain property. The administrator may also be able to acquire messages across multiple chat groups related to a certain fire. For example, the information sharing server 5 may store information that uniquely identifies each occurrence of a fire warning sign, and by adding the unique identifying information to messages from the notification of the information sharing server 5 to the message that is deemed to be an instruction determination, the administrator may be able to acquire messages across multiple chat groups.

[0197] (Features) Furthermore, the features of the above-described embodiments and modifications may be combined in any manner.

[0198] (Addendum) The disaster prevention system of Appendix 1 comprises a plurality of mobile terminals carried by a plurality of users, a management device having information relating to at least the plurality of mobile terminals recorded therein, and a fire alarm system that identifies at least the location where a fire precursor has occurred, wherein when the management device receives precursor location information indicating the location where a fire precursor has occurred from the fire alarm system, the management device transmits fire precursor information indicating that a fire precursor has occurred to a first mobile terminal among the plurality of mobile terminals that is pre-associated with the location indicated by the precursor location information based on the received precursor location information, and after transmitting the fire precursor information, when the management device receives predetermined information sent from the plurality of mobile terminals, the management device transmits information instructing a predetermined second mobile terminal among the plurality of mobile terminals to extinguish the fire.

[0199] The disaster prevention system of Appendix 2 is the disaster prevention system described in Appendix 1, wherein the second mobile terminal is a mobile terminal carried by a user of the plurality of mobile terminals who is responsible for initial fire extinguishing, and when the management device receives information indicating that a fire has been confirmed as the specified information after sending the fire warning information, it sends information to the second mobile terminal instructing the first fire extinguishing equipment to extinguish the fire.

[0200] The disaster prevention system of Appendix 3 is the disaster prevention system described in Appendix 2, in which the management device, after sending information instructing the first fire extinguishing equipment to extinguish the fire, sends information to the second mobile terminal instructing the second fire extinguishing equipment to extinguish the fire using the second fire extinguishing equipment when the management device receives information indicating that it is difficult to extinguish the fire using the first fire extinguishing equipment.

[0201] The disaster prevention system of Supplementary Note 4 is the disaster prevention system of Supplementary Note 3, wherein the first fire extinguishing equipment is a fire extinguisher, and the second fire extinguishing equipment is a fire hydrant device.

[0202] (Effect of supplementary notes) According to the disaster prevention system described in Appendix 1, fire warning information indicating that a fire warning has occurred is sent to a first mobile terminal among a plurality of mobile terminals that is pre-associated with the location indicated by the warning location information, and information instructing the fire to be extinguished is sent to a second mobile terminal among a plurality of mobile terminals that is pre-determined. This makes it possible to notify some users (e.g., those involved in the management or operation of the facility to which the disaster prevention system is applied) of the fire warning signs at an early stage before the fire spreads and have them take action to extinguish the fire, thereby improving disaster prevention capabilities.

[0203] According to the disaster prevention system described in Appendix 2, by transmitting information instructing the first fire extinguishing equipment to extinguish the fire, it is possible to specifically inform the fire extinguishing equipment, for example, and therefore to prevent delays in the initial fire extinguishing activities due to confusion over which fire extinguishing equipment to select.

[0204] According to the disaster prevention system described in Appendix 3, when information is received indicating that it is difficult to extinguish the fire using the first fire extinguishing equipment, information instructing the second fire extinguishing equipment to extinguish the fire can be sent, thereby making it possible to, for example, use appropriate equipment to extinguish the fire, thereby improving disaster prevention capabilities.

[0205] According to the disaster prevention system described in Appendix 4, the first fire extinguishing equipment is a fire extinguisher and the second fire extinguishing equipment is a fire hydrant device, so that appropriate equipment can be used to carry out fire extinguishing activities depending on the spread of the fire, for example, thereby improving disaster prevention capabilities. [Explanation of symbols]

[0206] 1 Terminal device 2 sensor 3 Disaster prevention receiver 4. Disaster prevention notification server 5 Information sharing server 11 Communications Department 12 Touchpad 13. Display 14 Recording section 15 Control Unit 41 Communications Department 42 Recording section 43 Control Unit 51 Communications Department 52 Recording section 53 Control Unit 61 Group name display field 62 Main text display field 100 Disaster Prevention System 101 Terminal equipment 102 Terminal Equipment 103 Terminal Equipment 104 Terminal Equipment 105 Terminal Equipment 106 Terminal Equipment 107 Terminal Equipment 201 Sensor 202 Sensor L1 Transmission Line

Claims

1. A disaster prevention system using a plurality of different group chats in which a plurality of information terminals participate, Based on fire-related information received from outside, Select a group chat to which the first information is to be posted from the group chats; notifying the group chat of the first information posting destination of information based on the fire-related information; When information related to a fire is posted on the group chat of the first information posting destination, selecting a second group chat to which the information is to be posted from the group chat based on the fire-related information; Notifying the second information posting destination group chat of information related to firefighting Disaster prevention system.

2. A method for responding to a fire using a plurality of different group chats in which a plurality of information terminals participate, The system is Selecting a group chat to which the first information is to be posted from the group chats based on the fire-related information received from an external source; notifying the group chat of the first information posting destination of information based on the fire-related information; When information related to a fire is posted on the group chat of the first information posting destination, selecting a second group chat to which the information is to be posted from the group chat based on the fire-related information; Notifying the second information posting destination group chat of information related to firefighting How to respond to a fire using group chat.

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