Disaster prevention system

Abstract

To provide a disaster prevention system that can improve disaster resilience. [Solution] In a disaster prevention system 100 comprising multiple terminal devices 1 carried by multiple users, an information sharing server 5 that records information about at least multiple terminal devices 1, and a disaster prevention notification server 4 that identifies the location where at least a fire precursor has occurred, the information sharing server 5, upon receiving fire precursor location information from the disaster prevention notification server 4, transmits fire precursor information indicating that a fire precursor has occurred to a terminal device 1 among the multiple terminal devices 1 that is pre-associated with the location indicated by the fire precursor location information, and, after transmitting the fire precursor information, upon receiving predetermined information transmitted from the multiple terminal devices 1, transmits information instructing a predetermined terminal device 1 among the multiple terminal devices 1 to extinguish the fire.

Description

Technical Field

[0006] ,

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

Background Art

[0002] Conventionally, for notifying the occupants of a facility by a fire notification system at the time of a fire, notification has been made by a bell (see, for example, Patent Document 1) or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in order to avoid confusion due to non-fire alarms, a simultaneous notification to the entire facility is made after the fire level is determined. Therefore, the notification to the relevant parties outside the disaster prevention center (for example, employees of the hotel in a hotel facility) is also at the same timing as the simultaneous notification. As a result, there has been a demand for early notification to the relevant parties, and there has been room for improvement in terms of improving disaster prevention performance.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a disaster prevention system capable of improving disaster prevention performance.

Means for Solving the Problems

[0006] To solve the above-mentioned problems and achieve the objective, 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 an external source, selects a first group chat to post information to from the group chats, notifies the first group chat to post information based on the fire-related information, and when information related to a fire is posted on the first group chat to post information to, selects a second group chat to post information to from the group chats based on the fire-related information, and notifies the second group chat to post information related to extinguishing the fire.

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

[0008] The disaster prevention system described in claim 1 can solve the problems of the present invention. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows a hotel building to which the disaster prevention system according to this embodiment is applied. [Figure 2] This is a floor plan of a portion of the second floor of the building shown in Figure 1. [Figure 3] This block diagram shows the functions of a disaster prevention system. [Figure 4]It is a diagram illustrating the terminal ID and group ID stored in each terminal device. [Figure 5] It is a diagram illustrating facility information. [Figure 6] It is a diagram illustrating user information. [Figure 7] It is a diagram illustrating chat group identification information. [Figure 8] It is a diagram illustrating notification destination group identification information. [Figure 9] It is a diagram illustrating chat history information. [Figure 10] It is a diagram illustrating a group chat display screen. [Figure 11] It is a flowchart of premonition-related processing. [Figure 12] It is a plan view of a part of the second floor of the building in FIG. 1. [Figure 13] It is a diagram illustrating a group chat display screen. [Figure 14] It is a diagram illustrating a group chat display screen. [Figure 15] It is a diagram illustrating a group chat display screen. [Figure 16] It is a diagram illustrating a group chat display screen. [Figure 17] It is a diagram illustrating a group chat display screen. [Figure 18] It is a flowchart of fire-related processing. [Figure 19] It is a diagram illustrating a group chat display screen. [Figure 20] It is a flowchart of fire level determination-related processing. [Figure 21] It is a diagram illustrating a group chat display screen.

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the disaster prevention system according to the present invention will be described in detail based on the drawings. Note that the present invention is not limited by this embodiment.

[0011] [[Basic Concepts of the Embodiment]] First, the basic concepts of this embodiment will be described. This embodiment generally relates to a disaster prevention system.

[0012] A "disaster prevention system" is a system used for disaster prevention. Specifically, it is a device for outputting information related to disaster prevention. For example, it includes a mobile terminal, a management device, and fire notification equipment.

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

[0014] A "management device" is a device in which information related to at least a plurality of mobile terminals is recorded. Specifically, when receiving prediction location information indicating the location where a sign of a fire has occurred from the fire notification equipment, based on the received prediction location information, it transmits fire prediction information indicating that a sign of a fire has occurred to the first mobile terminal that is pre-associated with the location indicated by the prediction location information among the plurality of mobile terminals. After transmitting the fire prediction information, when receiving predetermined information transmitted from the plurality of mobile terminal sides, it is a concept that includes a device that transmits information instructing fire extinguishing to a predetermined second mobile terminal among the plurality of mobile terminals, etc.

[0015] "Information related to a plurality of mobile terminals" is a concept that includes, for example, first information indicating a location related to a target facility and a mobile terminal associated with that location, or second information indicating a mobile terminal carried by a user responsible for initial fire extinguishing when a fire (including a sign of a fire) occurs at the target facility. Note that the "mobile terminal associated with the location" is a concept that includes, for example, a mobile terminal carried by a user who is to be notified of the occurrence of the fire (including a sign of a fire) when a fire (including a sign of a fire) occurs at the associated location of the target facility.

[0016] Furthermore, "signs of a fire" may be interpreted as 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 the conditions for a fire to occur, for example, a sign that a relatively large-scale combustion phenomenon is about to occur, for example, a combustion phenomenon of a scale that can be extinguished by users within the facility without needing to notify firefighters, or a case that is not an actual fire, such as smoke from cigarettes, dust, or steam. Also, "fire" may be interpreted as a combustion phenomenon of a scale larger than the combustion phenomenon corresponding to the aforementioned signs of a fire, for example, a combustion phenomenon of a scale that requires notification to firefighters and extinguishing by those firefighters. Furthermore, the definitions of "signs of a fire" and "fire" described herein are examples, and other definitions, including publicly known definitions, may be applied insofar as they correspond to the description in this embodiment (the definitions of other terms may be interpreted similarly).

[0017] "First mobile device" refers to, for example, one or more mobile devices among several, which are pre-associated with the location where signs of fire occurred. "Second mobile device" refers to, for example, one or more mobile devices among several, which are carried by the user responsible for initial fire suppression.

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

[0019] "Target facilities" refers to facilities to which the disaster prevention system applies, and is a concept that includes any facility such as hotels, shopping centers, and schools.

[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 predetermined information, and transmits information to a second mobile terminal instructing the first fire extinguishing system to extinguish the fire. It is also a concept that includes means, etc., that, after transmitting information instructing the first fire extinguishing system to extinguish the fire, receives information indicating that it is difficult to extinguish the fire with the first fire extinguishing system, and transmits information to a second mobile terminal instructing the second fire extinguishing system to extinguish the fire.

[0021] "First-class fire extinguishing equipment" refers to equipment for extinguishing fires, specifically equipment that can be operated by the user as described above, and is easier to operate than second-class fire extinguishing equipment, and is a concept that includes, for example, fire extinguishers. "Second-class fire extinguishing equipment" refers to equipment for extinguishing fires, specifically equipment that can be operated by the user as described above, and is a concept that includes, for example, fire hydrant systems.

[0022] A "fire alarm system" is a system that identifies the location where at least one sign of a fire has occurred.

[0023] The following embodiment describes the case where the facility to which the disaster prevention system is applied is a hotel.

[0024] [Specific details of the embodiment] Next, the 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. Figure 1 is a diagram showing the hotel building to which the disaster prevention system according to this embodiment is applied, Figure 2 is a floor plan of a part of the second floor of the building in Figure 1, and Figure 3 is a block diagram showing the functions of the disaster prevention system.

[0026] The fire prevention system 100 in Figures 1 and 3 is a system for fire prevention in the building shown in Figure 1, and more specifically, a system for fire prevention in areas inside the building or outside the building (not shown in Figure 1 for illustrative purposes, such as the hotel parking lot). The building is, for example, a hotel, and as shown in Figure 2, the second floor of the building has multiple staircases (e.g., Staircase 1 to Staircase 3), multiple guest rooms (e.g., Room 1 to Room 5), and multiple corridors (e.g., Corridor 1 to Corridor 3). In Figure 2, for illustrative purposes, the detectors 2 are shown as circles and there are multiple detectors, but only detectors 201 and 202 among these detectors 2 are labeled.

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

[0028] (Configuration - Terminal device) The terminal device 1 in Figures 1 and 3 is the aforementioned mobile terminal, a device carried by a hotel employee (user), and is, for example, a smartphone.

[0029] Although there are many users who are employees of the hotel in the building shown in Figure 1, in this embodiment, "A1" to "A7" (for convenience) in Figure 1 represent the names of each user, and the explanation will focus on these users, "A1" to "A7". Furthermore, regarding the job titles of these users, as shown in Figure 1, we will explain the case where "A1" is a front desk staff member, "A2" and "A3" are bell staff, "A4" is a cloakroom staff member, "A5" is a cleaning staff member on the second floor, "A6" is a facilities staff member on the second floor, and "A7" is a facilities staff member on the third floor.

[0030] Terminal device 1 includes, for example, terminal devices 101 to 107 carried by each of these users. Each terminal device 1, as shown in Figure 3, includes, for example, a communication unit 11, a touchpad 12, a display 13, a recording unit 14, and a control unit 15.

[0031] (Configuration - Terminal device - Communication unit) The communication unit 11 in Figure 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.

[0032] (Configuration - Terminal device - Touchpad) The touchpad 12 in Figure 3 is an operating means that receives various operation inputs from the user when pressed by the user's finger or the like. The specific configuration of this touchpad 12 is arbitrary, but for example, a known one equipped with an operation position detection means such as a resistive type or a capacitive type can be used.

[0033] (Configuration - Terminal device - Display) The display 13 in Figure 3 is a display means that displays various images based on the control of the control unit 15. The specific configuration of this display 13 is arbitrary, but for example, a flat panel display such as a known liquid crystal display or organic EL display can be used. In addition, 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) The recording unit 14 in Figure 3 is a recording means for recording programs and various data necessary for the operation of the terminal device 1, and is configured, for example, using flash memory as an external recording device. However, any other recording medium can be used instead of or in conjunction with flash memory, including magnetic recording media such as hard disks and magnetic disks, or optical recording media such as DVDs and Blu-ray discs (the same applies to the recording units of other devices).

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

[0036] The "Terminal ID" in Figure 3 is information used to uniquely identify terminal device 1. The recording unit 14 of terminal devices 101-107 in Figure 1 stores "IDt001" to "IDt007," as shown in Figure 4.

[0037] The "Group ID" in Figure 3 is information that uniquely identifies the chat group to which each terminal device 1 user belongs. A "chat group" is a concept that indicates the group to which users who communicate with each other using text or voice information via terminal device 1 belong; in other words, it is a concept that indicates the group to which users who engage in group chats belong. The method for generating these "chat groups" is arbitrary, but it is assumed that they are predetermined based on an arbitrary concept, such as each user's job title (front desk, bell staff, etc. as mentioned above) or the job they are responsible for in emergencies (for example, the job of performing initial fire suppression in the event of a fire). Specific chat groups will be described later. Furthermore, as shown in Figure 4, the recording unit 14 of terminal devices 101 to 107 stores "IDg001" to "IDg008," etc. The chat groups identified by "IDg001" to "IDg008" will also be described later.

[0038] (Configuration - Terminal device - Control unit) The control unit 15 in Figure 3 is a control means for controlling the terminal device 1. Specifically, it is a computer comprising a CPU, various programs interpreted and executed on the CPU (including basic control programs such as the OS, and application programs launched on the OS to realize specific functions), and internal memory such as RAM for storing programs and various data (the control units of other devices are similar). In particular, the program according to this embodiment is installed on the terminal device 1 via any recording medium or network, thereby substantially constituting each part of the control unit 15 (the control units of other devices are similar). The processing performed by the control unit 15 will be described later.

[0039] (Configuration-sensor) The detectors 2 shown in Figures 1 to 3 are devices that detect and report signs of fire or the occurrence of a fire in the compartment (area) in which they are installed. They are installed in each compartment on each floor and are communicatively connected to the disaster prevention receiver 3 via the transmission line L1 (Figure 1). For example, as shown in Figure 2, this includes detector 201 installed in room 1, which is a guest room on the second floor of the building, and detector 202 installed in room 2, which is also a guest room on the second floor of the building. Note that detectors 2 may also be able to communicate with the disaster prevention receiver 3 wirelessly using known wireless communication technology, without going through the transmission line L1.

[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 sensor 2 stores an equipment ID for unique identification of itself, and in particular, the recording units of sensors 201 and 202 store "IDd201" to "IDd202" as equipment IDs.

[0041] (Configuration - Disaster Prevention Receiver) The disaster prevention receiver 3 shown in Figures 1 and 3 is a device that performs various disaster prevention processing based on various signals received from the sensor 2. The specific configuration of this disaster prevention receiver 3 is arbitrary, but for example, it includes a communication unit, a recording unit, and a control unit (not shown). Since a known configuration can be applied to the specific configuration of this disaster prevention receiver 3, a detailed explanation will be omitted.

[0042] (Configuration - Disaster Prevention Notification Server) The disaster prevention alarm server 4 in Figure 3 is the aforementioned fire alarm system. The disaster prevention alarm server 4 is a device installed, for example, inside or outside the building shown in Figure 1 (for example, a disaster prevention center or data center), and may be configured as a standalone computer or as a so-called cloud computer using multiple computers (the same applies to the information sharing server 5).

[0043] As shown in Figure 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 - Communications Unit) The communication unit 41 in Figure 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 this communication unit 41 are arbitrary, but it can be configured using, for example, a known communication circuit.

[0045] (Configuration - Disaster Prevention Notification Server - Recording Unit) The recording unit 42 in Figure 3 is a recording means for recording programs and various data necessary for the operation of the disaster prevention notification server 4, and for example, equipment information is stored there.

[0046] (Configuration - Disaster Prevention Notification Server - Recording Unit - Equipment Information) "Equipment information" refers to information that identifies each piece of equipment (in this embodiment, sensor 2) that is included in the disaster prevention system 100. Figure 5 is a diagram illustrating equipment information. This equipment information is interconnected, for example, as shown in Figure 5, with information corresponding to the item "Equipment ID", information corresponding to the item "Equipment Type Information", and information corresponding to the item "Installation Location Information".

[0047] The information corresponding to the item "Equipment ID" is the aforementioned equipment ID used to uniquely identify sensor 2, which is a piece of equipment. This equipment ID is arbitrary, but for example, "IDd201" to "IDd202" are stored to uniquely identify sensors 201 to 202 in Figure 2. The information corresponding to the item "Equipment Type Information" is equipment type information that identifies the type of equipment (in Figure 5, this is "Sensor" etc., which identifies the type of sensor 2). The information corresponding to the item "Installation Location Information" is installation location information that identifies the location where each piece of equipment is installed (in Figure 5, this includes "2nd Floor Guest Room (Room 1)" indicating Room 1 (Figure 2), which is a guest room on the second floor of the building, "2nd Floor Guest Room (Room 2)" indicating Room 2 (Figure 2), which is a guest room on the second floor of the building, "Restaurant" indicating the restaurant located in the building in Figure 1, "Lobby" indicating the lobby, "Parking Lobby" indicating the hotel parking lot located around the building, etc.).

[0048] Furthermore, the top-level information in this equipment information (the combination of "IDd201", "detector", and "2nd floor guest room (room 1)") indicates that the type of detector 201 (Figure 2) identified by "Equipment ID" = "ID201" is "detector" as indicated by "Equipment Type Information", and that the location where the detector 201 is installed is "2nd floor guest room (room 1)" as indicated by "Installation Location Information" (i.e., room 1, which is a guest room on the second floor of the building).

[0049] The specific method for storing such equipment information is arbitrary, but for example, if information is entered into the disaster prevention notification server 4 using any method (for example, a method of inputting information using a recording medium such as a memory stick, or a method of inputting information by sending information from the administrator's terminal, etc.), the control unit 43 will store the equipment information based on that information (unless otherwise specified, the same applies to each type of information described later).

[0050] (Configuration - Disaster Prevention Notification Server - Control Unit) The control unit 43 in Figure 3 is a control means for controlling 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 Figure 3 is the aforementioned management device, and is at least a device for conducting group chats among multiple users. Since the group chat function in this information sharing server 5 can be implemented using any technology, including publicly known technologies, only the parts unique to this invention will be described in detail, and other parts will be described only in outline.

[0052] As shown in Figure 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) The communication unit 51 in Figure 3 is a communication means for communicating with external devices (for example, terminal device 1 and 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.

[0054] (Configuration - Information sharing server - Recording unit) 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 recipient group identification information, and chat history information.

[0055] (Configuration - Information sharing server - Recording unit - User information) "User information" refers to information that identifies a user, such as information that identifies an employee of a hotel to which the disaster prevention system 100 is applied. Figure 6 is an example of user information. This user information is interconnected, for example, as shown in Figure 6, with information corresponding to the item "Name Information," information corresponding to the item "Job Title Information," and information corresponding to the item "Terminal ID."

[0056] The information corresponding to the item "Name Information" is the name information indicating the user's name (in Figure 6, this is a representation for convenience, and as mentioned above, it is "A1," etc., as illustrated in Figure 1). The information corresponding to the item "Job Title Information" is the job title indicating the user's job title (in Figure 6, as mentioned above, it is "Front," etc., indicating the job title of a front desk staff member). The information corresponding to the item "Terminal ID" is the terminal ID that uniquely identifies terminal device 1 carried by the user (in Figure 6, it is "IDt001," etc., as mentioned above).

[0057] Furthermore, the top-level information in this user information (the combination of "A1", "Front", and "IDt001") indicates that the job title of the user named "A1" is Front staff, as indicated by the "Job Title Information" = "Front", and that the terminal ID of the terminal device 101 carried by the user named "A1" is "IDt001" (that is, the terminal device 101 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" refers to the information that identifies the aforementioned chat group. Figure 7 is an example of chat group identification information. As shown in Figure 7, for example, this chat group identification information is interconnected with information corresponding to the item "Group ID", information corresponding to the item "Group Name Information", information corresponding to the item "Job Title Information", and information corresponding to the item "Terminal ID".

[0059] The information corresponding to the item "Group ID" is the group ID that uniquely identifies the chat group (e.g., "IDg001" in Figure 7). The information corresponding to the item "Group Name" is the group name information that identifies the name of the chat group (e.g., "Front Group" in Figure 7). The information corresponding to the item "Job Title Information" is the job title information that indicates the job title of the users belonging to the chat group (e.g., "Front" in Figure 7). Note that the job title information in Figure 7 also includes "All," which indicates all job titles, and "Arbitrary," which indicates that the users belonging to the chat group are not determined by job title (i.e., the job title of the users belonging to the chat group is arbitrary). The information corresponding to the item "Terminal ID" is the terminal ID that uniquely identifies the terminal device 1 carried by the users belonging to the chat group (e.g., "IDt001" in Figure 7). Note that the terminal ID in Figure 7 also includes "All," which indicates the terminal IDs of all terminal devices 1 included in the disaster prevention system 100.

[0060] Furthermore, the top-level information of this chat group identification information ("IDg001", "Front Group", "Front, Bell Staff, Cloak", and the combination of "IDt001, IDt002, IDt003, IDt004,...") indicates that the name of the chat group identified by "IDg001" is "Front Group", and that the job titles of the users belonging to this "Front Group" are front desk staff (as indicated by "Front"), bell staff (as indicated by "Bell Staff"), and cloakroom staff (as indicated by "Cloak"). It has been indicated that the terminal IDs that uniquely identify the terminal device 1 carried by users belonging to the "front group" are "IDt001" (i.e., the terminal ID of terminal device 101 carried by "A1", who is in charge of the front desk), "IDt002" (i.e., the terminal ID of terminal device 102 carried by "A2", who is a bell staff member), "IDt003" (i.e., the terminal ID of terminal device 103 carried by "A3", who is a bell staff member), "IDt004" (i.e., the terminal ID of terminal device 104 carried by "A4", who is in charge of the cloakroom), and so on.

[0061] Furthermore, the information at the bottom of this chat group identification information (the combination of "IDg008", "Initial Firefighting Group", "Arbitrary", and "IDt002, IDt004,...") indicates that the name of the chat group identified by "IDg008" is "Initial Firefighting Group", that the occupation of the users belonging to the "Initial Firefighting Group" is arbitrary, and that the terminal IDs that uniquely identify the terminal device 1 carried by the users belonging to the "Initial Firefighting Group" are "IDt002" (i.e., the terminal ID of terminal device 102 carried by "A2", who is a bell staff member) and "IDt004" (i.e., the terminal ID of terminal device 104 carried by "A4", who is in charge of cloakroom duties), etc.

[0062] Furthermore, the "Terminal ID" = "IDt002,IDt004,..." in the bottom row of information (the combination of "IDg008", "Initial Firefighting Group", "Optional", and "IDt002,IDt004,...") may be interpreted as corresponding to "Second piece of information indicating the mobile terminal carried by the user responsible for initial firefighting when a fire (including signs of fire) occurs at the target facility."

[0063] The specific method for storing this chat group identification information is arbitrary, but for example, for chat groups other than "Group Name Information" = "All Employees" and "Initial Firefighting Group", the information may be stored by generating each group so that users in job roles who would like to share information with each other in their normal work are in the same group, and then inputting the information about the generated group into the information sharing server 5. Also, for the chat group "Group Name Information" = "All Employees", the information may be stored by inputting the information for storing the information shown in the second row from the bottom of Figure 7 into the information sharing server 5. Also, for the chat group "Group Name Information" = "Initial Firefighting Group", the information may be stored by inputting the terminal ID of the terminal device 1 carried by the user in charge of initial firefighting into the information sharing server 5.

[0064] (Configuration - Information sharing server - Recording unit - Notification recipient group identification information) "Notification recipient group identification information" is information that identifies the chat group to which the users who are to be notified about the fire belong. Figure 8 is an example of notification recipient group identification information. As shown in Figure 8, for example, this notification recipient group identification information is interconnected with the information corresponding to the item "Fire Occurrence Location Information" and the information corresponding to the item "Group ID".

[0065] The information corresponding to the item "Fire Occurrence Location Information" is fire occurrence location information that indicates the location where a fire is about to occur or where a fire is about to occur. Any information can be used as this fire occurrence location information; for example, information that identifies the area where detector 2 is installed can be used, but in this embodiment, the case in which information corresponding to the installation location information in Figure 5 is used will be described. In Figure 8, "Restaurant" is shown indicating the restaurant located in the building in Figure 1, "Lobby" is shown indicating the lobby, "Parking Lot" is shown indicating the hotel parking lot located around the building, and "2nd Floor Guest Rooms" is shown indicating the guest rooms on the 2nd floor of the building in Figure 2 (i.e., rooms 1 to 5 on the 2nd floor, etc.). The information corresponding to the item "Group ID" is a group ID that uniquely identifies the chat group to which the user to be notified about the fire belongs (in Figure 8, it is "IDg001" as mentioned above, etc.).

[0066] Furthermore, the top-level information in this notification recipient group identification information (the combination of "restaurant, lobby" and "IDg001, IDg002, IDg004") indicates that when the location of the fire warning or fire is in the "restaurant" or "lobby," the group IDs that uniquely identify the chat group to which the user who will be notified about the fire belongs are "IDg001," "IDg002," and "IDg004."

[0067] Furthermore, in the notification recipient group identification information in Figure 8, the fire location information (i.e., information identifying the section where detector 2 is installed) and the group ID are interconnected, and in the chat group identification information in Figure 7 mentioned above, the group ID and the terminal ID are interconnected. Therefore, since the fire location information and the terminal ID are interconnected in the notification recipient group identification information in Figure 8 and the chat group identification information in Figure 7, the notification recipient group identification information in Figure 8 and the chat group identification information in Figure 7 may be interpreted as corresponding to "first information indicating the location of the target facility and the mobile terminal associated with that location."

[0068] (Configuration - Information sharing server - Recording unit - Chat history information) "Chat history information" refers to information that identifies the history of information shared within each chat group in a group chat. Figure 9 is an example of chat history information. This chat history information is interconnected, for example, as shown in Figure 9, with 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 with the same name in Figure 7.

[0069] The information corresponding to the item "Chat Information" is information that shows the history of information shared among users belonging to the chat group. This chat information is optional, but for example, we will explain the use of information that indicates the date and time the information was shared, information to identify the person who shared the information, and information that links the shared information together. In Figure 9, "07011400" indicates the date and time the information was shared, July 1st, 14:00, "IDt001" is the terminal ID of terminal device 101 carried by the user "A1" in Figure 1 who shared the information, and the shared information "GG has arrived, is the second floor cleaned?" is illustrated as being linked together in "07011400-IDt001-GG has arrived, is the second floor cleaned?". Note that "GG" here is a placeholder and is the name of the customer who visited the hotel. Furthermore, regarding chat information, it is assumed that it will be stored either by each user inputting the information, or by the control unit 53 of the information sharing server 5 automatically storing it in the processes described later (rather than by inputting information from each user). However, for the "information to identify the information sharing entity," in the former case (i.e., when chat information is stored by each user inputting the information), the terminal ID will be used as described above, and in the latter case (i.e., when it is stored dynamically), "N" will be used.

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

[0071] While the specific method for storing such chat history information is arbitrary, for example, group ID and group name information will be stored using the same name as shown in Figure 7, and chat information will be stored by executing the following processes: predictive processing, fire-related processing, fire level determination-related processing, and chat processing.

[0072] (Configuration - Information Sharing Server - Control Unit) The control unit 53 in Figure 3 is a control means for controlling the information sharing server 5. The processing performed by the control unit 53 will be described later.

[0073] (process) Next, we will describe the chat processing, prediction-related processing, fire-related processing, and fire level determination-related processing performed by the disaster prevention system 100 configured in this way.

[0074] It will be explained that the recording unit 14 (Figure 3) of terminal devices 101 to 107 in Figure 1 stores a group ID, which identifies the chat group to which each user carrying terminal devices 101 to 107 belongs, using an arbitrary method. One method for storing this group ID is, for example, during the initial setup of terminal device 1, the control unit 53 of the information sharing server 5 refers to the chat group identification information in Figure 7 to identify the group ID associated with each terminal ID, and transmits the identified group ID to each terminal device 1. The control unit 15 of each terminal device 1 then stores the transmitted group ID, or it may be stored by inputting the information via the touchpad 12. Here, it will be explained that the recording unit 14 of each terminal device 1 stores the group ID exemplified in Figure 4.

[0075] (Processing - Chat Processing) First, let's explain chat processing. "Chat processing" refers to the process of conducting group chats within a chat group, specifically, the process of sharing information within the chat group. Since publicly known processing techniques for conducting group chats can be applied to this chat processing, only an overview will be provided. "Chat processing" includes, for example, chat information storage processing and chat information display processing.

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

[0077] First, when a user selects a chat group identified by a group ID stored in the recording unit 14 of the terminal device 1 as a chat group for sharing information through a predetermined operation performed via the touchpad 12, and then inputs information to be shared within the selected chat group using any method, the control unit 15 of the terminal device 1 obtains its own terminal ID stored in its recording unit 14, obtains the group ID that identifies the selected chat group, and obtains the input information, and then transmits the acquired terminal ID, group ID, and information including the input information (hereinafter referred to as "terminal-side storage information") to the information sharing server 5. The method of inputting information to be shared within the chat group is arbitrary; for example, text information may be input via the touchpad 12, or, if the terminal device 1 is provided with sound pickup means such as a microphone, voice information may be input via the sound pickup means. However, in this embodiment, the case of inputting text information will be described.

[0078] Here, for example, "A1," the front desk staff member in Figure 1, selects the "Guest Room Group (2F)" chat group identified by "IDg005" from the "Group ID" = "IDg001, IDg002, IDg003, IDg004, IDg005, IDg006, IDg007,..." stored in the recording unit 14 of the terminal device 101, as a chat group to share information, and then selects the chat group "Guest Room Group (2F)" identified by "IDg005" and shares information within the selected "Guest Room Group (2F)". When the user enters "GG has arrived, is the second floor cleaned?" via the touchpad 12, the control unit 15 of the terminal device 1 retrieves the "terminal ID" = "IDt001" stored in its own record unit 14, retrieves the "group ID" = "IDg005" which identifies the selected chat group, retrieves the "input information" = "GG has arrived, is the second floor cleaned?", and then sends the "terminal-side storage information" containing this retrieved information to the information sharing server 5.

[0079] Meanwhile, the control unit 53 of the information sharing server 5 receives the "terminal-side storage information" transmitted from the terminal device 1, identifies the current date and time using an arbitrary method (for example, a method of identifying it by referring to the timing result of a timing means such as a timer provided on the information sharing server 5), and then stores the chat information in the chat history information of Figure 9 based on the identified current date and time and the aforementioned received "terminal-side storage information". More specifically, in the chat history information of Figure 9, the information indicating the identified current date and time, the "terminal ID" included in the aforementioned received "terminal-side storage information", and the "input information" included in the aforementioned received "terminal-side storage information" are linked together and stored as chat information associated with the same group ID as the group ID included in the aforementioned received "terminal-side storage information".

[0080] Here, for example, if the current date and time is specified as July 1st, 2:00 PM, then in the chat history information in Figure 9, the chat information associated with the same group ID as the received "information for terminal storage" = "IDg005" will be stored as chat information. This includes "07011400-IDt001-GG-sama has arrived, is the second floor cleaned?" (the topmost piece of chat information specifically illustrated in Figure 9), which is the information obtained by relating the "07011400-IDt001-GG-sama has arrived, is the second floor cleaned?" which is the "information for terminal storage" that was specified above, "07011400" indicating the current date and time of July 1st, 2:00 PM, "Terminal ID" = "IDt001" included in the received "information for terminal storage", and "Input information" = "GG-sama has arrived, is the second floor cleaned?" included in the "information for terminal storage". This completes the "chat information storage process".

[0081] (Processing - Chat processing - Chat information display processing) "Chat information display processing" refers to the process of displaying information corresponding to the chat information in the chat history information of Figure 9 on terminal device 1.

[0082] Figure 10 is an example of 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 displayed on the display 13 of terminal device 1, and as an example, has a group name display field 61 and a message body display field 62. The group name display field 61 is a field that displays the name of the chat group, and the message body display field 62 is a field that displays information shared within the chat group.

[0083] First, when a user selects a chat group identified by a group ID stored in the recording unit 14 of the terminal device 1 as a chat group to display information for through a predetermined operation performed via the touchpad 12, the control unit 15 of the terminal device 1 obtains its own terminal ID stored in its recording unit 14, and also obtains the group ID that identifies the aforementioned selected chat group, and then sends the information including the obtained 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," the cleaning staff member on the second floor in Figure 1, selects one chat group, "Guest Room Group (2F)," identified by "IDg005" among the "Group IDs" = "IDg003, IDg005, IDg007, ..." stored in the recording unit 14 of the terminal device 105, as a chat group to display information through a predetermined operation performed via the touchpad 12 of the terminal device 105, the control unit 15 of the terminal device 105 retrieves its own "Terminal ID" = "IDt005" stored in its recording unit 14, and also retrieves the "Group ID" = "IDg005" that identifies the aforementioned selected chat group, and then sends "Terminal-side request information" including the retrieved "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" transmitted from the terminal device 1, refers to the chat history information in Figure 9, and obtains group name information and chat information associated with the same group ID as the group ID included in the received "terminal-side request information" mentioned above. Based on the obtained group name information and chat information, it generates screen information for displaying the group chat display screen in Figure 10, and transmits the generated screen information and information including the terminal ID included in the received "terminal-side request information" mentioned above (hereinafter referred to as "server-side response information") to the terminal device 1.

[0086] Here, we will explain, for example, the case where the only chat information associated with "Group ID" = "IDg005" in Figure 9 is "07011400-IDt001-GG has arrived, is the second floor cleaned?". 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, refers to the chat history information in Figure 9, and obtains the "group name information" = "guest room group (2F)" and the "chat information" = "07011400-IDt001-GG has arrived, is the second floor cleaned?" which are associated with the same group ID as "Group ID" = "IDg005" included in the received "terminal-side request information" as described above. Based on the obtained group name information and chat information, it generates screen information for displaying the group chat display screen in Figure 10, and sends the generated screen information and "server-side response information" including "terminal ID" = "IDt005" included in the received "terminal-side request information" as described above to the terminal device 1.

[0087] The method for generating screen information is arbitrary, but for example, screen information is 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 Figure 10, and the information corresponding to the acquired chat information is displayed in the main text display field 62. More specifically regarding the main text display field 62, for example, by referring to the user information in Figure 6, the name information and occupation information associated with the same terminal ID as the "terminal ID" contained in the acquired chat information is identified, and then screen information is generated in which the identified name information and occupation information, the date and time indicated by the "information indicating the date and time the information was shared" contained in the acquired chat information, and the "shared information" contained in the acquired chat information are displayed. If the acquired chat information contains "N" instead of "terminal ID", the name information and occupation information cannot be identified, so screen information is generated in which that name information and occupation information are omitted.

[0088] Here, for example, the name of the group identified as "Guest Room Group (2F)" obtained earlier is displayed in the group name display field 61 of Figure 10, and information corresponding to the chat information obtained earlier is displayed in the text display field 62, generating screen information. More specifically regarding the main text display field 62, for example, by referring to the user information in Figure 6, the system identifies the "Name Information" = "A1" and "Job Title Information" = "Front Desk" associated with the same terminal ID as the "Terminal ID" = "IDt001" contained in the aforementioned acquired "Chat Information" = "07011400-IDt001-GG has arrived, is the second floor cleaned?". Then, it generates screen information that displays the identified "Name Information" = "A1" and "Job Title Information" = "Front Desk", "7 / 11 14:00" indicated by "07011400", which is the "information indicating the date and time the information was shared" contained in the aforementioned acquired chat information, and the "Shared Information" = "GG has arrived, is the second floor cleaned?" contained in the aforementioned acquired chat information.

[0089] Meanwhile, the recording unit 14 of terminal device 1 receives "server-side response information" transmitted from the information sharing server 5. If the terminal ID contained in the received "server-side response information" matches the terminal ID recorded in its own recording unit 14, it considers it to be "server-side response information" addressed to itself. Based on the screen information contained in the received "server-side response information," it generates a group chat display screen and displays it on the display 13.

[0090] Here, for example, the recording unit 14 of the terminal device 105 receives "server-side response information" transmitted from the information sharing server 5. Since the "terminal ID" = "IDt005" contained in the received "server-side response information" matches the "terminal ID" = "IDt005" recorded in its own recording unit 14, it recognizes it as "server-side response information" addressed to itself. Based on the screen information contained in the received "server-side response information," it generates the group chat display screen shown in Figure 10 and displays it on the display 13. This completes the chat information display process.

[0091] (Processing - Predictive processing) Next, we will explain the warning-related processing. Figure 11 is a flowchart of the warning-related processing (in the following explanation of each process, steps will be abbreviated as "S"), and Figure 12 is a floor plan of a part of the second floor of the building in Figure 1. "Warning-related processing" is, in general terms, processing performed by each device of the disaster prevention system 100, and is, for example, processing related to disaster prevention when a fire warning occurs. The timing of executing this warning-related processing is arbitrary, but for example, it will be assumed that it will be repeatedly executed when the power to each device of the disaster prevention system 100 is turned on, and the explanation will begin from the point when the execution of the warning-related processing has started (the same applies to other processes described later). Here, for example, as shown in Figure 12, we will explain using the case where a fire breaks out in Room 1, a guest room on the second floor of the building (the same applies to other processes described later). In addition, communication between devices performed at each step is carried out via the communication unit, but since known methods can be applied to the specific methods of this communication, the explanation will be omitted.

[0092] In SA1 in Figure 11, the control unit (not shown) of the disaster prevention receiver 3 determines whether or not a fire precursor has occurred. Specifically, although arbitrary, for example, the detector 2 in Figures 1 to 3 is configured as shown below, and the determination is made based on the signal transmitted from the detector 2.

[0093] In detail, the detector 2 is configured as a so-called smoke detector that detects signs of fire or the occurrence of a fire based on the concentration of smoke, and the recording unit (not shown) of the detector 2 stores a threshold for detecting signs of fire and a threshold for detecting fire. The "threshold for detecting signs of fire" is a threshold used to detect signs of fire, and is, for example, a value compared with the concentration of smoke measured by the detector 2. The "threshold for detecting fire" is a threshold used to detect a fire, and is, for example, a value compared with the concentration of smoke measured by the detector 2, and is set to a larger value than the aforementioned "threshold for detecting signs of fire". The detector 2 will then operate, for example, as follows.

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

[0095] Furthermore, the control unit (not shown) of detector 2 compares the smoke concentration it has measured with the "fire detection threshold" stored in the recording unit. 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 greater than the "fire detection threshold," it determines that a fire has occurred (i.e., it detects that a fire has occurred), retrieves the equipment ID recorded in its own recording unit, generates a detector-side fire signal (a signal indicating that a fire has occurred) including the retrieved equipment ID, and transmits it to the fire prevention receiver 3.

[0096] More specifically regarding the processing of SA1, the control unit of the fire prevention receiver 3 determines that no fire warning has occurred (SA1 NO) if it has not received a warning signal from the detector 2, and repeatedly executes SA1 until it determines that a fire warning has occurred. If it receives a warning signal from the detector 2, it determines that a fire warning has occurred (SA1 YES) and proceeds to SA2.

[0097] Here, for example, as shown in Figure 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. When the smoke concentration measured by detector 201 exceeds the "precursor detection threshold" recorded in the detector 201's recording unit, detector 201 determines that a fire precursor has occurred, retrieves the "equipment ID" = "IDd201" recorded in its own recording unit, generates a detector-side precursor signal including the retrieved "equipment ID" = "IDd201", and transmits it to the fire prevention receiver 3. The control unit of the fire prevention receiver 3 then receives the detector-side precursor signal from detector 201 and determines that a fire precursor has occurred (SA1 YES).

[0098] In SA2 of Figure 11, the control unit (not shown) of the disaster prevention receiver 3 acquires the equipment ID included in the sensor-side warning signal received by SA1, generates a receiver-side warning signal (a signal indicating that a fire warning has occurred) including the acquired equipment ID, and transmits the generated receiver-side warning signal to the disaster prevention alarm server 4.

[0099] Here, for example, the "Equipment ID" = "IDd201" included in the sensor-side prediction signal received by SA1 is acquired, and a receiver-side prediction signal containing the acquired "Equipment ID" = "IDd201" is generated and sent to the disaster prevention notification server 4.

[0100] Meanwhile, in SB1 in Figure 11, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side warning signal transmitted by SA2.

[0101] Here, for example, a receiver-side prediction signal containing "Equipment ID" = "IDd201" is received.

[0102] In SB2 in Figure 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 it is arbitrary, for example, by referring to the equipment information in Figure 5, it identifies the installation location information associated with the same equipment ID as the equipment 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 equipment information in Figure 5, the "equipment ID" = "IDd201" included in the receiver-side warning signal received by SB1 is identified, and the "location information" = "2nd floor guest room (room 1)" associated with the same equipment ID is identified. The location indicated by the identified "location information" = "2nd floor guest room (room 1)" is identified as "room 1, which is a guest room on the 2nd floor of the building" as the warning location.

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

[0105] Here, for example, in SB2 as described above, "Room 1, which is a guest room on the second floor of the building" was identified as the suspected location, so in SB3, a suspected location signal including "suspected location information" = "2nd floor guest room (Room 1)" is sent to the information sharing server 5 as suspected location information indicating "Room 1, which is a guest room on the second floor of the building".

[0106] Meanwhile, in SC1 in Figure 11, the control unit 53 of the information sharing server 5 receives the predictive location signal transmitted by SB3.

[0107] Here, for example, a signal indicating a potential location is received, which includes "predictive location information" = "2nd floor guest room (Room 1)".

[0108] In SC2 in Figure 11, the control unit 53 of the information sharing server 5 notifies users belonging to the chat group related to the location of the fire warning that a fire warning has occurred. Specifically, although optional, it may store the chat information in the chat history information in Figure 9 and notify users that the chat information has been stored.

[0109] <Storage of chat information> First, regarding the storage of chat information, the group ID associated with the fire occurrence location information, which indicates the same location as the predictive location information included in the predictive location signal received by SC1, is identified by referring to the notification recipient group identification information in Figure 8. The current date and time are then identified by any method, and in the chat history information in Figure 9, the information relating the identified current date and time, the aforementioned "N", and the fire predictive information indicating that a fire has occurred is stored as chat information associated with the same group ID as identified above.

[0110] Furthermore, if the information about the location of a fire that occurred, as received by SC1, includes specific room numbers within the second-floor guest rooms, such as "2nd floor guest room (Room 1)," then the comprehensive information including that room will be treated as indicating the same location, as shown in Figure 8, where "Fire Occurrence Location Information" = "2nd Floor Guest Room."

[0111] Furthermore, while the fire warning information stored as chat information is optional, it will include, for example, information indicating the location of the warning (e.g., warning location information included in the warning location signal received by SC1) and information prompting confirmation of a fire at the warning location because a fire warning has occurred (e.g., message information such as "There is a risk of fire, please check").

[0112] Here, for example, by referring to the notification recipient group identification information in Figure 8, the "Group ID" = "IDg005" associated with "2nd floor guest room," which is fire occurrence location information indicating the same location as the "precursor location information" = "2nd floor guest room (room 1)" included in the precursor location signal received by SC1, is identified. Furthermore, the current date and time is identified by any method, for example, "July 1st, 18:00," and then, in the chat history information in Figure 9, "07011800-N-There is a risk of fire in 2nd 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 precursor information stored as this chat information, "There is a risk of fire in 2nd floor guest room (room 1), please check," includes information indicating the precursor location, "2nd floor guest room (room 1)" (i.e., the precursor location information included in the precursor location signal received by SC1), and information prompting confirmation of a fire at the precursor location because a fire precursor has occurred (i.e., message information such as "There is a risk of fire, please check").

[0113] <Notification that chat information has been stored> Next, regarding the notification that chat information has been stored, the same procedure as in the case of "<Storage of Chat Information>" is used. The notification recipient 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 predictive location information included in the predictive location signal received by SC1. Then, a push notification signal (a signal indicating that new information has been stored and shared as chat information) containing the identified group ID is sent to the terminal device 1.

[0114] Here, for example, by referring to the notification recipient group identification information in Figure 8, SC1 identifies the "Group ID" = "IDg005" associated with the "2nd floor guest room," which is the fire occurrence location information indicating the same location as the "predictive location information" = "2nd floor guest room (room 1)" included in the predictive location signal received by SC1. Then, a push notification signal (a signal indicating that new information has been stored and shared as chat information) containing the identified "Group ID" = "IDg005" is sent to the terminal device 1.

[0115] On the other hand, 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 and shared as chat information) on the display 13. Although the push notification here is optional, for example, the user may be notified of the chat group in which new information has been stored and shared as chat information by displaying text information or image information, etc., including information indicating the chat group identified by the group ID included in the received push notification signal, on the display 13. In addition, along with displaying this push notification information, the user may be notified that new information has been stored and shared as chat information by turning on the vibration function of the terminal device 1 or by outputting a predetermined notification sound or notification voice through a speaker (not shown) of the terminal device 1.

[0116] Here, for example, when the control unit 15 of terminal devices 101 to 107 receives a push notification signal containing "Group ID" = "IDg005", it compares the "Group ID" = "IDg005" contained in the received push notification signal with the group ID (Figure 4) recorded in its own recording unit 14. Terminal devices 101, 105, and 106 have the same group ID as "Group ID" = "IDg005" contained in the received push notification signal recorded in their own recording unit 14, so they display the push notification information on the display 13. In this case, the text information "Guest Room Group (2F)" is also displayed as information indicating the chat group identified by "Group ID" = "IDg005" contained in the received push notification signal. Terminal devices 102 to 104 and 107 do not display the push notification information because the same group ID as "Group ID" = "IDg005" contained in the received push notification signal is not recorded in their own recording unit 14.

[0117] Figure 13 is an example of a group chat display screen. When a user of terminal device 1, who has viewed the aforementioned push notification information, 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 aforementioned chat group in which the new information has been stored and shared as the chat group to display the information by performing a predetermined operation via the touchpad 12, as described in the "chat information display processing," the control unit 15 of terminal device 1 communicates the "terminal-side request information" and "server-side response information" as described above, and then displays, for example, the group chat display screen shown in Figure 13 on the display 13.

[0118] Here, for example, if "A5," a cleaning staff member on the second floor and user of terminal device 105 who has viewed the aforementioned 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 "Guest Room Group (2F)," then, as explained in "Chat Information Display Processing," by performing a predetermined operation via the touchpad 12, selects one chat group, "Guest Room Group (2F)," identified by "IDg005" among the "Group IDs" = "IDg003, IDg005, IDg007,..." stored in the recording unit 14 of terminal device 105, the control unit 15 of terminal device 105 sends "Terminal-side request information" including "Terminal ID" = "IDt005" and "Group ID" = "IDg005" to the information sharing server 5.

[0119] Meanwhile, the control unit 53 of the information sharing server 5 receives the "terminal-side request information" sent from the terminal device 1, refers to the chat history information in Figure 9, and obtains the "group name information" = "guest room group (2F)" and "chat information" = "07011400-IDt001-GG has arrived, is the 2nd floor cleaned?", "07011401-IDt005-Cleaning is complete", and "07011800-N-There is a risk of fire in the 2nd floor guest room (room 1), please check" which are associated with the same group ID as the "group ID" = "IDg005" included in the received "terminal-side request information". Based on the obtained group name information and chat information, it generates screen information for displaying the group chat display screen in Figure 13, and sends the generated screen information and "server-side response information" which includes the "terminal ID" = "IDt005" included in the received "terminal-side request information", thereby displaying the group chat display screen in Figure 13 on the display 13 of the terminal device 105. In the group chat display screen, by performing a predetermined operation (e.g., swipe) via the touchpad 12, information corresponding to "07011400-IDt001-GG has arrived, is the second floor cleaned?" (see Figure 10) and "07011401-IDt005 - Cleaning is complete" will also be displayed. However, in the initial screen, information corresponding to the most recently stored chat information may be displayed in an easily visible position (e.g., a position closer to the top of the screen).

[0120] Furthermore, if "A1," the front desk staff member, and "A6," the second-floor equipment staff member, who are users of terminal devices 101 and 106 and have viewed the aforementioned push notification information, perform the same operation as "A5," the group chat display screen shown in Figure 13 will be displayed on terminal devices 101 and 106. It is also possible to interpret terminal devices 101, 105, and 106 here as corresponding to the "first mobile terminal."

[0121] In SC3 of Figure 11, the control unit 53 of the information sharing server 5 determines whether or not to issue an instruction to extinguish the fire with a fire extinguisher. Specifically, although it is optional, for example, 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 Figure 9. That is, if a hotel employee enters information about a fire, the information about the fire is stored in that chat information. Considering this, the chat information is monitored and the following processing is performed. The chat information to be monitored here is arbitrary; for example, all chat information may be monitored, or chat information associated with the chat group to which the user who notified SC2 of the occurrence of fire signs belongs may be monitored. In this embodiment, the latter case is used as an example for explanation.

[0122] In detail, the control unit 53 of the information sharing server 5 refers to the chat history information in Figure 9 and identifies the group ID that stored the chat information in SC2's "<Storage of Chat Information>" (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, it monitors the chat information in the chat history information in Figure 9 that is associated with the group ID that identifies the chat group to be monitored as described above, and determines whether information indicating that a fire has been confirmed (in this embodiment, for example, information containing the words "fire" or "fire incident") has been stored after the chat information was stored in SC2's "<Storage of Chat Information>". If it is determined that information indicating that a fire has been confirmed has not been stored, it is determined that there is a possibility of a false alarm by the detector 2, etc., and that there is no actual fire, and therefore no instruction to extinguish the fire with a fire extinguisher is given (NO in SC3), and SC3 is repeatedly executed until it is determined that an instruction to extinguish the fire with a fire extinguisher is given. In this case, if it is not determined that an instruction to extinguish the fire with a fire extinguisher will be given within a predetermined time (for example, 10 to 20 minutes) from the time the chat information is stored in SC2's "<Storage of Chat Information>", 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 occurred, and an instruction to extinguish the fire with a fire extinguisher will be given (SC3's YES), and the process proceeds to SC4.

[0123] Here, for example, if user "A6," a second-floor facility manager, views the group chat display screen shown in Figure 13 on SC2, visits room 1, a second-floor guest room shown in Figure 12, confirms the fire, and then, through a predetermined operation via the touchpad 12, selects the chat group corresponding to the group chat display screen in Figure 13, "Guest Room Group (2F)" (i.e., "Guest Room Group (2F)" identified by "IDg005" among the "Group ID" = "IDg004, IDg005, IDg007,..." stored in the recording unit 14 of terminal device 106), and enters "Fire confirmed" as information to be shared in "Guest Room Group (2F)", the control unit 15 of terminal device 106 sends "Terminal-side storage information" including "Terminal ID" = "IDt006", "Group ID" = "IDg005", and "Inputted information" = "Fire confirmed" to the information sharing server 5.

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

[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 and identifies the "group ID" = "IDg005" 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, in the chat history information of Figure 9, we monitor the chat information associated with the "Group ID" = "IDg005" which identifies the chat group of the "Guest Room Group (2F)" that was identified as the target of monitoring. In SC2's "<Storage of Chat Information>", after storing "Chat Information" = "07011800-N-There is a risk of fire in the 2nd floor guest room (Room 1), please check", "Chat Information" = "07011805-IDt006-Fire confirmed" is stored, and since this chat information contains the word "fire", we determine that information indicating that a fire has been confirmed has been stored, and therefore we determine to give instructions to extinguish the fire with a fire extinguisher (SC3 YES).

[0126] Figure 14 is an example of a group chat display screen. After "07011805-IDt006-Fire confirmed" is stored as chat information in the chat history information in Figure 9, if a user belonging to the "Guest Room Group (2F)" chat group selects "Guest Room Group (2F)" as the chat group to display information, the aforementioned "chat information display process" will be executed, and the group chat display screen of Figure 14, which includes information corresponding to "07011805-IDt006-Fire confirmed," will be displayed on the display 13 of the terminal device 1 carried by that user.

[0127] In SC4 in Figure 11, the control unit 53 of the information sharing server 5 notifies users belonging to the chat group corresponding to the initial fire suppression group of the instruction to extinguish the fire with a fire extinguisher. Specifically, although optional, for example, in the same way as in SC2, it stores the chat information in the chat history information in Figure 9 and notifies that the chat information has been stored.

[0128] <Storage of chat information> First, regarding the storage of chat information, the group ID that identifies the "initial firefighting group" is identified by referring to the chat group identification information in Figure 7, and the current date and time are identified by any method. Then, in the chat history information in Figure 9, the chat information associated with the identified group ID is stored as chat information, which includes the information indicating the identified current date and time, the aforementioned "N", and the fire extinguisher fire extinguishing instruction information instructing the use of a fire extinguisher.

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

[0130] Here, for example, by referring to the chat group identification information in Figure 7, the "Group ID" = "IDg008" that identifies the "initial fire suppression group" is identified, and the current date and time is identified by any method, for example, "July 1st, 18:05". Then, in the chat history information in Figure 9, the chat information associated with the same group ID as the identified "Group ID" = "IDg008" is stored as "07011805-N-Please extinguish the fire in the 2nd floor guest room (room 1) with a fire extinguisher". Note that the fire extinguisher instruction information stored as this chat information, "Please extinguish the fire in the 2nd floor guest room (room 1) with a fire extinguisher", will include the information indicating the location of the warning sign, "2nd floor guest room (room 1)" (i.e., the warning location information included in the warning location signal received by SC1).

[0131] <Notification that chat information has been stored> Next, regarding the notification that chat information has been stored, the same procedure as in the case of "<Storage of Chat Information>" is used to identify the group ID that identifies the "Initial Firefighting Group" by referring to the chat group identification information in Figure 7, and then a push notification signal containing 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 suppression group" is identified, and then a push notification signal containing 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 the same processing as described in SC2 to display the push notification information on the display 13 as appropriate, and also displays information indicating the chat group identified by the group ID included in the push notification signal, as described in SC2.

[0134] Here, for example, terminal devices 101 to 107 receive a push notification signal containing "Group ID" = "IDg008". However, as shown in Figure 4, only terminal devices 102 and 104 have "Group ID" = "IDg008" stored in them. Therefore, terminal devices 102 and 104 display the push notification information on the display 13 and also display the text information "Initial Firefighting Group" as information indicating the chat group identified by "Group ID" = "IDg008" included in the push notification signal.

[0135] Figure 15 is an example of a group chat display screen. When a user of terminal device 1, who has viewed the aforementioned push notification information, 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 aforementioned chat group in which the new information has been stored and shared as the chat group to display the information through a predetermined operation performed via the touchpad 12, as described in the "chat information display processing," the control unit 15 of terminal device 1 communicates the "terminal-side request information" and "server-side response information" as described above, and then displays, for example, the group chat display screen shown in Figure 15 on the display 13.

[0136] Here, for example, if "A4," a cloakroom attendant and user of terminal device 104 who has viewed the aforementioned 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 Firefighting Group," then, as explained in the "Chat Information Display Processing," by performing a predetermined operation via the touchpad 12, selects one chat group of the "Initial Firefighting Group" identified by "IDg008" among the "Group IDs" = "IDg001, IDg007, IDg008,..." stored in the recording unit 14 of terminal device 104, the control unit 15 of terminal device 104 sends "Terminal-side request information" including "Terminal ID" = "IDt004" and "Group ID" = "IDg008" to the information sharing server 5.

[0137] Here, we will explain, for example, the case where the only chat information associated with "Group ID" = "IDg008" in Figure 9 is "07011805-N-Please extinguish the fire in the 2nd floor guest room (Room 1) with a fire extinguisher." 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, refers to the chat history information in Figure 9, and obtains the "group name information" = "initial fire extinguishing group" and the "chat information" = "07011805-N-Please extinguish the fire in the 2nd floor guest room (room 1) with a fire extinguisher" which are associated with the same group ID as the "group ID" = "IDg008" included in the received "terminal-side request information". Based on the obtained group name information and chat information, it generates screen information for displaying the group chat display screen in Figure 15, and sends the generated screen information and "server-side response information" including the "terminal ID" = "IDt004" included in the received "terminal-side request information" to display the group chat display screen in Figure 15 on the display 13 of the terminal device 104.

[0138] Furthermore, if "A2," a user of terminal device 102 who has viewed the aforementioned push notification information, performs the same operation as "A4," the group chat display screen shown in Figure 15 will be displayed on terminal device 102.

[0139] In this case, users "A2" and "A4," who belong to the initial firefighting group, will see the group chat display screen in Figure 15 and recognize that they need to extinguish the fire with a fire extinguisher in Room 1, which is a guest room on the second floor. They will then go to Room 1, which is a guest room on the second floor as shown in Figure 12, and extinguish the fire using a fire extinguisher.

[0140] In SC5 of Figure 11, the control unit 53 of the information sharing server 5 determines whether or not to issue an instruction to extinguish the fire using a fire hydrant. Specifically, although it is optional, for example, 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 Figure 9. That is, when a hotel employee (for example, a user belonging to the initial fire extinguishing group) enters information related to extinguishing the fire, the chat information is stored in that chat information. Considering this, the chat information is monitored and the following processing is performed. The chat information to be monitored here is arbitrary; for example, all chat information may be monitored, or chat information associated with the chat group to which the user who notified the instruction to extinguish the fire using a fire extinguisher in SC4 belongs may be monitored. In this embodiment, the latter case will be explained as an example.

[0141] In detail, the control unit 53 of the information sharing server 5 refers to the chat history information in Figure 9 and identifies the group ID that stored the chat information in SC4's "<Storage of Chat Information>" (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, it monitors the chat information in the chat history information in Figure 9 that is associated with the group ID that identifies the chat group to be monitored as described above, and determines whether information indicating that extinguishing the fire with a fire extinguisher is difficult (in this embodiment, for example, information containing the words "difficult" or "hard") has been stored after the chat information was stored in SC4's "<Storage of Chat Information>". If it determines that information indicating that extinguishing the fire is difficult has not been stored, it determines not to issue an instruction to extinguish the fire with a fire hydrant (NO in SC5), and repeatedly executes SC5 until it determines to issue an instruction to extinguish the fire with a fire hydrant. In this case, if it is not determined that an instruction to extinguish the fire using a fire hydrant should be given within a predetermined time (for example, 20 to 30 minutes) from the time the chat information is stored in SC5's "<Storage of Chat Information>", the process may be terminated, assuming that the fire has been extinguished using a fire extinguisher. 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 a fire extinguisher and that an instruction to extinguish the fire using a fire hydrant should be given (YES in SC5), and the process proceeds to SC6.

[0142] Here, for example, if user "A4," who is in charge of the cloakroom, visits Room 1, a guest room on the second floor as shown in Figure 12, and attempts to extinguish the fire with a fire extinguisher but fails to do so, and performs a predetermined operation via the touchpad 12 to select the "Initial Fire Extinguishing Group," which is the chat group corresponding to the group chat display screen in Figure 15, as the chat group to share information, and then enters "Fire is difficult to extinguish" as the information to be shared in the "Initial Fire Extinguishing Group," the control unit 15 of the terminal device 104 sends "Terminal-side storage information" including "Terminal ID" = "IDt004," "Group ID" = "IDg008," and "Inputted information" = "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 for storage on the terminal side" transmitted from the terminal device 1, identifies the current date and time as, for example, "July 1st, 18:10" using an arbitrary method, and then stores the "chat information" = "07011810-IDt004-Fire extinguishing difficult" in the chat history information of Figure 9 based on the identified current date and time and the aforementioned received "information for storage on the terminal side".

[0144] In this case, in SC5 in Figure 11, the control unit 53 of the information sharing server 5 refers to the chat history information in Figure 9 and identifies the "group ID" = "IDg008" in "<Storage of chat information>" of SC4, and identifies the chat group of the "initial fire suppression group" identified by the identified group ID as the chat group to be monitored. Next, in the chat history information of Figure 9, the chat information associated with the "Group ID" = "IDg008" that identifies the chat group of the "initial firefighting group" that was identified as the target of monitoring is monitored. SC4's "<Storage of chat information>" stores "Chat information" = "07011805-N-Please extinguish the fire in the 2nd floor guest room (room 1) with a fire extinguisher," and then stores "Chat information" = "07011810-IDt004-Firefighting is difficult." Since this chat information contains the word "difficult," it is determined that information indicating that firefighting is difficult has been stored, and therefore it is determined that instructions to extinguish the fire using a fire hydrant will be issued (SC5 YES).

[0145] Figure 16 is an example of a group chat display screen. After "07011810-IDt004-Fire Extinguishing Difficulty" is stored as chat information in the chat history information of Figure 9, if a user belonging to the "Initial Fire Extinguishing Group" chat group selects "Initial Fire Extinguishing Group" as the chat group to display information, the aforementioned "chat information display process" is executed, and the group chat display screen of Figure 16, which includes information corresponding to "07011810-IDt004-Fire Extinguishing Difficulty," is displayed on the display 13 of the terminal device 1 carried by that user.

[0146] In SC6 in Figure 11, the control unit 53 of the information sharing server 5 notifies users belonging to the chat group corresponding to the initial firefighting group of the instruction to extinguish the fire at the fire hydrant. Specifically, this is optional and is the same as the processing in SC4, and involves storing the chat information in the chat history information in Figure 9 and notifying that the chat information has been stored.

[0147] <Storage of chat information> First, regarding the storage of chat information, the group ID that identifies the "initial firefighting group" is identified by referring to the chat group identification information in Figure 7, and the current date and time are identified by any method. Then, in the chat history information in Figure 9, the chat information associated with the identified group ID is stored as chat information, which includes the information indicating the identified current date and time, the aforementioned "N", and the fire hydrant firefighting instruction information instructing firefighting at the fire hydrant.

[0148] Here, for example, by referring to the chat group identification information in Figure 7, the "Group ID" = "IDg008" that identifies the "initial firefighting group" is identified, and the current date and time is identified by any method, for example, "July 1st, 18:10". Then, in the chat history information in Figure 9, the chat information associated with the same group ID as the identified "Group ID" = "IDg008" is stored as "07011810-N-Please extinguish the fire in the 2nd floor guest room (room 1) using the fire hydrant".

[0149] <Notification that chat information has been stored> Next, regarding the notification that chat information has been stored, the same processing as in SC4's "<Notification that chat information has been stored>" is performed so that terminal devices 102 and 104 display the push notification information on the display 13, and also display the text information "Initial Firefighting Group" as information indicating the chat group identified by the "Group ID" = "IDg008" included in the push notification signal.

[0150] Figure 17 is an example of a group chat display screen. When a user of terminal device 1 who has viewed the aforementioned push notification information selects the chat group in which the aforementioned new information is stored and shared as the chat group to display information, by performing a predetermined operation via the touchpad 12 as described in "Chat Information Display Processing", the control unit 15 of terminal device 1 communicates the "terminal-side request information" and "server-side response information" as described above, and then displays, for example, the group chat display screen shown in Figure 17 on the display 13.

[0151] Here, for example, if "A4," a cloakroom attendant who is a user of terminal device 104 and has viewed the aforementioned push notification information, selects one chat group, "Initial Firefighting Group," as the chat group to display information for by performing a predetermined operation via the touchpad 12, as explained in "Chat Information Display Processing," the control unit 15 of terminal device 104 sends "Terminal-side request information" including "Terminal ID" = "IDt004" and "Group ID" = "IDg008" to the 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, referring to the chat history information in Figure 9, identifies the "group name information" = "initial fire extinguishing group" and the "chat information" = "07011805-N-Please extinguish the fire in the 2nd floor guest room (room 1) with a fire extinguisher", and "07011810-IDt004-Fire extinguishing is difficult". The system obtains the message "07011810-N-Please extinguish the fire in the 2nd floor guest room (room 1) using the fire hydrant," and based on the obtained group name information and chat information, generates screen information for displaying the group chat display screen shown in Figure 17. By sending the generated screen information and the "server-side response information" which includes the "terminal ID" = "IDt004" contained in the received "terminal-side request information" mentioned above, the system displays the group chat display screen shown in Figure 17 on the display 13 of the terminal device 104.

[0153] Furthermore, if "A2," a user of terminal device 102 who has viewed the aforementioned push notification information, performs the same operation as "A4," the group chat display screen shown in Figure 17 will be displayed on terminal device 102.

[0154] In this case, users "A2" and "A4," who belong to the initial fire suppression group, will see the group chat display screen in Figure 17 and recognize that they need to extinguish the fire using the fire hydrant in Room 1, a guest room on the second floor. They will then go to Room 1, the guest room on the second floor shown in Figure 12, and extinguish the fire using the fire hydrant. This completes the warning-related processing.

[0155] (Processing - Fire-related processing) Next, we will explain fire-related procedures. Figure 18 is a flowchart of fire-related procedures, and Figure 19 is an example of a group chat display screen. "Fire-related procedures" generally refer to the procedures performed by each device of the disaster prevention system 100, such as procedures related to disaster prevention in the event of a fire.

[0156] In SD1 of Figure 18, the control unit (not shown) of the fire prevention receiver 3 determines whether or not a fire has occurred. Specifically, although arbitrary, the determination is made based on the reception of the fire alarm signal from the detector side as described above. More specifically, if the control unit of the fire prevention receiver 3 does not receive a fire alarm signal from detector 2, it determines that no fire has occurred (NO in SD1), and repeatedly executes SD1 until it determines that a fire has occurred. If it receives a fire alarm signal from detector 2, it determines that a fire has occurred (YES in SD1), and proceeds to SD2.

[0157] Here, for example, as shown in Figure 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. When the smoke concentration measured by detector 201 exceeds the "fire detection threshold" recorded in the detector 201's recording unit, detector 201 determines that a fire has occurred, retrieves the "equipment ID" = "IDd201" recorded in its own recording unit, generates a detector-side fire signal including the retrieved "equipment ID" = "IDd201", and transmits it to the fire prevention receiver 3. The control unit of the fire prevention receiver 3 then receives the detector-side fire signal from detector 201 and determines that a fire has occurred (YES in SD1).

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

[0159] Here, for example, the "Equipment ID" = "IDd201" included in the fire signal from the detector received by SD1 is obtained, and a receiver-side fire signal including the obtained "Equipment ID" = "IDd201" is generated and sent to the disaster prevention alarm server 4.

[0160] Meanwhile, in SE1 shown in Figure 18, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side fire signal transmitted by SD2.

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

[0162] In SE2 in Figure 18, the control unit 43 of the disaster prevention alarm server 4 identifies the location where the fire occurred (i.e., the fire location). Specifically, although arbitrary, the fire location is identified in the same way as in SB2 in Figure 11.

[0163] Here, for example, by referring to the equipment information in Figure 5, the SE1 identifies the "location information" = "2nd floor guest room (room 1)" associated with the same equipment ID as the "equipment ID" = "IDd201" included in the receiver-side fire signal received by the SE1, and identifies "room 1, which is a guest room on the 2nd floor of the building," as the location indicated by the said "location information" = "2nd floor guest room (room 1)," as the location of the fire.

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

[0165] Here, for example, since SE2 identified "Room 1, a guest room on the second floor of the building" as the location of the incident, SE3 sends a location signal to the information sharing server 5 that includes "Location Information" = "2nd Floor Guest Room (Room 1)" as location information indicating "Room 1, a guest room on the second floor of the building".

[0166] Meanwhile, in SF1 in Figure 18, the control unit 53 of the information sharing server 5 receives the location signal transmitted by SE3.

[0167] Here, for example, a location signal is received that includes "location information" = "2nd floor guest room (room 1)".

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

[0169] <Storage of chat information>

[0170] Here, for example, by referring to the notification recipient group identification information in Figure 8, the "Group ID" = "IDg005" associated with "2nd floor guest room," which is the fire location information indicating the same location as the "location information" = "2nd floor guest room (room 1)" included in the location signal received by SF1, is identified. Furthermore, the current date and time is identified by any method, for example, "July 1st, 18:40," and then, in the chat history information in Figure 9, the chat information associated with the same group ID as the identified group ID is stored as "07011840-N-Fire has occurred in 2nd floor guest room (room 1), please call 119."

[0171] <Notification that chat information has been stored> Here, for example, by referring to the notification recipient group identification information in Figure 8, the system identifies the "Group ID" = "IDg005" associated with the "2nd floor guest room," which is the fire location information indicating the same location as the "location information" = "2nd floor guest room (room 1)" included in the location signal received by SF1. Then, by sending a push notification signal (a signal indicating that new information has been stored and shared as chat information) containing the identified "Group ID" = "IDg005" to terminal device 1, the system displays the push notification information on terminal devices 101, 105, and 106.

[0172] On the other hand, for example, if "A5," a cleaning staff member on the second floor and user of terminal device 105 who has viewed the aforementioned push notification information, selects one chat group, "Guest Room Group (2F)," as the chat group to display information through a predetermined operation via the touchpad 12, the group chat display screen shown in Figure 19 will be displayed on the display 13. This completes the fire-related processing.

[0173] (Processing - Fire level determination related processing) Next, we will explain the fire level determination-related processing. Figure 20 is a flowchart of the fire level determination-related processing, and Figure 21 is an example of the group chat display screen. In general terms, "fire level determination-related processing" refers to the processing performed by each device of the disaster prevention system 100, for example, the processing related to disaster prevention when a fire is determined to have reached a fire level.

[0174] In SG1 of Figure 20, the control unit (not shown) of the fire prevention receiver 3 determines whether or not to determine the occurrence of a fire and whether or not to classify it as a fire level. Specifically, although arbitrary, the determination is made based on whether or not predetermined fire level determination conditions are met. "Predetermined fire level determination conditions" are conditions for determining that a fire should be classified as a fire level, and known conditions can be applied, but in this embodiment, the case in which the first to third fire level determination conditions are used will be described. "First fire level determination condition" is, for example, receiving a detector-side fire signal from multiple detectors 2, "second fire level determination condition" is, for example, receiving a signal from the fire transmitter side indicating that a button on a fire transmitter (not shown, but known) installed in the building has been pressed by a user, and "third fire level determination condition" is, for example, receiving information indicating that a fire level determination button (not shown, but known) installed on the fire prevention receiver 3 has been pressed by a user. In detail, the control unit of the fire prevention receiver 3 determines that the occurrence of a fire will not be assessed as a fire level if none of the first to third fire level determination conditions are met (SG1 NO), and repeatedly executes SG1 until it determines that the occurrence of a fire should be stopped. If at least one of the first to third fire level determination conditions is met, it determines that the occurrence of a fire will be assessed as a fire level (SG1 YES), and proceeds to SG2.

[0175] Here, for example, as shown in Figure 12, if a fire that started in Room 1, a guest room on the second floor, spreads to Room 2, and the smoke concentration measured by detectors 201 and 202 exceeds the "fire detection threshold" recorded in the recording units of detectors 201 and 202, detectors 201 and 202 determine that a fire has occurred and, in the same manner as described above, generate a detector-side fire signal and transmit it to the fire prevention receiver 3. The control unit of the fire prevention receiver 3 then receives the detector-side fire signal from detectors 201 and 202, and since it meets the "first fire level determination condition," it determines that a fire has occurred and determines the fire level (SG1 YES).

[0176] In SG2 of Figure 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 by the fire level) and transmits the generated receiver-side fire level determination signal to the disaster prevention alarm server 4. In this case, the disaster prevention receiver 3 may also notify of the fire by issuing a district bell or broadcasting an emergency, as in the conventional manner.

[0177] Meanwhile, in SH1 in Figure 20, the control unit 43 of the disaster prevention notification server 4 receives the receiver-side fire level determination signal transmitted by SG2.

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

[0179] Meanwhile, in SI1 of Figure 20, the control unit 53 of the information sharing server 5 receives the fire level determination signal transmitted by SH2.

[0180] In SI2 of Figure 20, the control unit 53 of the information sharing server 5 notifies all users belonging to the chat group corresponding to "all employees" that a fire has occurred and that the fire level has been determined. Specifically, although optional, it stores the chat information in the chat history information of Figure 9 and notifies that the chat information has been stored, similar to SC4 in Figure 11. The processing here is generally the same as SC4 in Figure 11, so only specific examples will be explained.

[0181] <Storage of chat information>

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

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

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

[0185] On the other hand, for example, if a user of terminal devices 101 to 107 who has viewed the aforementioned push notification information selects a chat group for "all employees" as the chat group to display the information through a predetermined operation performed via the touchpad 12, the group chat display screen shown in Figure 21 will be displayed on the display 13. At this point, the fire level determination-related processing is terminated.

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

[0187] Furthermore, by transmitting information instructing the use of fire extinguishers, it becomes possible to specifically inform people about fire extinguishing equipment, such as fire extinguishers, thus preventing delays in the initial response to firefighting due to confusion about which fire extinguishing equipment to choose.

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

[0189] [Modifications of the embodiment] While embodiments of the present invention have been described above, the specific configurations and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of ​​each invention described in the claims. Such modifications will be described below.

[0190] (Regarding the problems 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 and details of the invention's configuration. In some cases, only a portion of the problems described above may be solved, or only a portion of the effects described above may be achieved.

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

[0192] (Regarding notification of information) Furthermore, in the above embodiment, we have described a case in SC2 of Figure 11 where, after performing the processes of "<Storage of chat information>" and "<Notification that chat information has been stored>", the user selects a chat group to display information by performing a predetermined operation via the touchpad 12, and the group chat display screen is displayed. However, the embodiment is not limited to this. For example, the system may be configured to display the group chat display screen on the display 13 of the terminal device 1 regardless of the predetermined operation performed by the user.

[0193] Specifically, although optional, for example, after SC2's "<Storage of chat information>" and "<Notification that chat information has been stored>", the control unit 15 of the terminal device 1 that received the push notification signal may compare the group ID included in the received push notification signal with the group ID recorded in its own record unit 14. If the group ID included in the received push notification signal matches any of the group IDs recorded in its own record unit 14, instead of displaying the push notification information, or in addition to displaying the push notification information, it may be configured to perform the following processing. Specifically, it may obtain the group ID included in the received push notification signal as described above, and also obtain the terminal ID recorded in its own record unit 14, and then send the "terminal-side request information" including the obtained group ID and terminal ID to the information sharing server 5. In the same way as described in the "chat information display processing", it receives "server-side response information", and based on the received "server-side response information", it generates a group chat display screen and displays it on the display 13. By processing in this way, it becomes possible to automatically display fire warning information, etc., regardless of predetermined operations by the user. Furthermore, the technology described here may be applied to SC4 and SC6 in Figure 11, SF2 in Figure 18, and SG2 in Figure 20, and configured to automatically display the information on the terminal device 1 side at each step.

[0194] (Regarding other features) Furthermore, while the detector 2 is described as detecting signs of fire or the occurrence of a fire, it is not limited to this. The detector 2 may transmit a predetermined physical quantity it has detected to the fire prevention receiver 3, and the fire prevention receiver 3 may detect signs of fire or the occurrence of a fire based on the predetermined physical quantity it has received.

[0195] Furthermore, when the information sharing server 5 notifies the next group chat, it may also display in the next group chat the log from the previous group chat that includes messages from the notification from the information sharing server 5 regarding the fire up to the message deemed to be an instruction. For example, as shown in Figure 15, when displaying "Please extinguish the fire in the second-floor guest room (room 1) with a fire extinguisher" on the group chat display screen of the "initial fire suppression group," it may also display the message "There is a risk of fire in the second-floor guest room (room 1), please check" or "Fire has been confirmed" as part of the log from the previous group chat.

[0196] Furthermore, messages in chat groups related to a particular property may be made accessible to the administrator through logs, either by multiple administrators or by all administrators. Administrators may also be able to retrieve messages across multiple chat groups related to a particular fire. For example, the information sharing server 5 may store information that uniquely identifies each instance of a fire precursor, and by attaching this uniquely identifying information to messages from the information sharing server 5 to messages deemed to be instructions, it may be possible to retrieve messages across multiple chat groups.

[0197] (Regarding the features) Furthermore, the features of the above embodiments and the features of the modified embodiments may be combined in any way.

[0198] (Note) The disaster prevention system described in Appendix 1 comprises a plurality of mobile terminals carried by a plurality of users, a management device that records information about at least the plurality of mobile terminals, and a fire alarm system that identifies at least the location where signs of a fire have occurred. In this disaster prevention system, when the management device receives sign location information indicating the location where signs of a fire have occurred from the fire alarm system, it transmits fire sign information indicating that signs of a fire have occurred to a first mobile terminal among the plurality of mobile terminals that is pre-associated with the location indicated by the sign location information, based on the received sign location information. After transmitting the fire sign information, when the management device receives predetermined information transmitted from the plurality of mobile terminals, it transmits information to a predetermined second mobile terminal among the plurality of mobile terminals that instructs it to extinguish the fire.

[0199] The disaster prevention system in Appendix 2 is the disaster prevention system described in Appendix 1, wherein the second mobile terminal is a mobile terminal carried by the user responsible for initial fire suppression among the multiple mobile terminals, and the management device, after transmitting the fire prediction information, receives information indicating that a fire has been confirmed as predetermined information, and transmits information to the second mobile terminal instructing the first fire suppression equipment to suppress the fire.

[0200] In the disaster prevention system described in Appendix 3, the management device, after transmitting information instructing the use of the first fire extinguishing equipment to extinguish the fire, receives information indicating that it is difficult to extinguish the fire using the first fire extinguishing equipment, and then transmits information instructing the use of the second fire extinguishing equipment to the second mobile terminal.

[0201] The disaster prevention system in Appendix 4 is the disaster prevention system described in Appendix 3, in which the first fire extinguishing equipment is a fire extinguisher and the second fire extinguishing equipment is a fire hydrant device.

[0202] (Effect of the note) According to the disaster prevention system described in Appendix 1, by transmitting fire warning information to a first mobile device that is pre-associated with the location indicated by the location information of the warning signs among multiple mobile devices, and by transmitting information to a second mobile device that is predetermined among multiple mobile devices to instruct it to extinguish the fire, it is possible to notify some users (for example, those in charge of 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 to 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 use of the first fire extinguishing equipment, it is possible to specifically inform the fire extinguishing equipment, for example, thus preventing delays in the initial response to firefighting due to hesitation in selecting the appropriate fire extinguishing equipment.

[0204] According to the disaster prevention system described in Appendix 3, when information is received indicating that it is difficult to extinguish a fire using the first fire extinguishing equipment, information is sent instructing the use of the second fire extinguishing equipment. This allows, for example, the appropriate equipment to be used 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. This allows for firefighting activities to be carried out using the appropriate equipment according to the spread of the fire, 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 Touchpads 13 displays 14 Records Section 15 Control Unit 41 Communications Department 42 Records Section 43 Control Unit 51 Communications Department 52 Records Section 53 Control Unit 61 Group Name Display Field 62 Main text display field 100 Disaster Prevention Systems 101 Terminal device 102 Terminal device 103 Terminal device 104 Terminal device 105 Terminal device 106 Terminal device 107 Terminal device 201 Sensor 202 Sensor L1 transmission line

Claims

1. A disaster prevention system that uses multiple different group chats involving multiple information terminals, Based on fire-related information received from external sources, From the aforementioned group chat, select the group chat to which you want to post the first piece of information. The information based on the fire-related information is notified to the group chat that is the first destination for posting information. When information related to the fire is posted to the group chat that is the first information posting destination, Based on the aforementioned fire-related information, select a second group chat from the aforementioned group chat to post the information to. The second group chat to which information is posted will be notified of information related to firefighting. Disaster prevention system.

2. A method for responding to a fire using multiple different group chats involving multiple information terminals, The system is Based on fire-related information received from an external source, select the first group chat to post the information to from the aforementioned group chat. The information based on the fire-related information is notified to the group chat that is the first destination for posting information. When information related to the fire is posted to the group chat that is the first information posting destination, Based on the aforementioned fire-related information, select a second group chat from the aforementioned group chat to post the information to. The second group chat to which information is posted will be notified of information related to firefighting. How to respond to a fire using group chat.

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