Disaster Prevention System

Abstract

To provide a disaster prevention system that enables a call between an emergency telephone master unit side and an emergency telephone slave unit side to be established easily.SOLUTION: A disaster prevention system includes an emergency telephone master unit 4, an emergency telephone slave unit 5 located in a monitored area, which emergency telephone slave unit 5 can talk to the emergency telephone master unit 4, and at least a disaster prevention display unit 3 that, in the event of a fire, displays information indicating a location of the fire on a map showing the monitored area. When a predetermined operation is performed to select a slave symbol image corresponding to the emergency telephone slave unit 5 that is a target of establishing a call with the emergency telephone master unit 4, the disaster prevention display unit 3 performs a process to establish a call between the emergency telephone slave unit 5 corresponding to the slave unit symbol image selected by the predetermined operation and the emergency telephone master unit 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] 2. Description of the Related Art Conventionally, disaster prevention systems that include an emergency telephone base unit and a plurality of emergency telephone handsets for making calls in the event of an emergency such as a fire have been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2019-129362 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional disaster prevention systems, when making a call from an emergency telephone parent unit to an emergency telephone handset, the user would, for example, use a paper map or the like to confirm the location of the emergency telephone handset to be the target of the call, and then input information indicating the location of the emergency telephone handset (for example, information indicating the building, floor, district, and number) into the emergency telephone parent unit, and the call would be established.

[0005] Furthermore, this conventional disaster prevention system has room for improvement in terms of making it easier to establish a call between the emergency telephone master unit and the emergency telephone slave unit.

[0006] The present invention has been made in consideration of the above problems, and aims to provide a disaster prevention system that makes it possible to easily establish a call between an emergency telephone parent unit and an emergency telephone handset. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the disaster prevention system according to claim 1 includes an emergency telephone base unit, an emergency telephone handset that is arranged in a monitored area and is capable of communicating with the emergency telephone base unit, and a display device that displays, in the event of a fire, information indicating the location of a fire that has occurred on a map indicating the monitored area, and the display device displays symbol information corresponding to the emergency telephone handset at a position on the map that corresponds to the position in the monitored area where the emergency telephone handset is arranged. The display device performs a process for establishing a call between the emergency telephone base unit and the emergency telephone handset, when a predetermined operation for selecting the symbol information corresponding to the emergency telephone handset that is to be the target of establishing a call with the emergency telephone base unit is performed, the process for establishing a call between the emergency telephone base unit and the emergency telephone handset that corresponds to the symbol information selected by the predetermined operation. .

[0008] The disaster prevention system according to claim 2 is the disaster prevention system according to claim 1, The display device identifies a state related to a call between the emergency telephone base unit and the emergency telephone handset, and displays the symbol information in a display mode corresponding to the identified state.

[0009] The disaster prevention system according to claim 3 includes an emergency telephone base unit, an emergency telephone handset that is arranged in a monitoring area and is capable of communicating with the emergency telephone base unit, fire Information showing the location of the fire in the event of a disaster symbol information corresponding to the emergency telephone handset at a position where the emergency telephone handset is located in the monitoring area; Display on the map operation A display unit; A disaster prevention system comprising: a predetermined operation for establishing a call between the emergency telephone parent unit and the emergency telephone handset on the operation display unit, wherein when the predetermined operation is performed to select the symbol information corresponding to the emergency telephone handset that is to be the target of establishing a call with the emergency telephone parent unit, a call is established between the emergency telephone handset that corresponds to the symbol information selected by the predetermined operation and the emergency telephone parent unit. Effect of the Invention

[0010] According to the disaster prevention system described in claim 1, by displaying symbol information corresponding to the emergency telephone handset, the installation location of the emergency telephone handset can be grasped without having to check the installation location of the emergency telephone handset using, for example, a paper map, making it possible to easily establish a call between the emergency telephone parent unit and the emergency telephone handset. In addition, by having the display device perform processing to establish a call between the emergency telephone handset corresponding to the symbol information selected by a specified operation and the emergency telephone base unit, the call can be established without the user having to input information indicating the building, floor, district, and number to the emergency telephone base unit as information indicating the installation location of the emergency telephone handset to be the target of the call, making it possible to easily establish a call between the emergency telephone base unit and the emergency telephone handset.

[0011] According to the disaster prevention system of claim 2, By displaying the symbol information in a display mode corresponding to the state of the call, for example, it becomes possible to recognize the state of the call by visually checking the symbol information. [Brief description of the drawings]

[0013] [Figure 1] 1 is a diagram showing a building to which a disaster prevention system according to an embodiment of the present invention is applied; [Diagram 2]FIG. 2 is a plan view of the third floor of the building in FIG. 1. [Diagram 3] FIG. 2 is a block diagram showing the functions of the disaster prevention display device. [Figure 4] FIG. 11 is a diagram illustrating an example of facility information. [Diagram 5] FIG. 11 is a diagram illustrating an example of child device information. [Figure 6] 2 is a block diagram showing the functions of the emergency telephone base unit. FIG. [Figure 7] 2 is a block diagram showing the functions of the emergency telephone handset. FIG. [Figure 8] 13 is a flowchart of a fire location display process. [Figure 9] FIG. 13 is a diagram illustrating a fire location display screen. [Figure 10] 13 is a flowchart of a call process. [Figure 11] 13 is a flowchart of a call process. [Figure 12] FIG. 13 is a diagram illustrating an example of an image for selecting a child unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a disaster prevention system according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiment.

[0015] [Basic Concept of the Embodiment] First, a basic concept of the present embodiment will be described. The present embodiment generally relates to a disaster prevention system.

[0016] The "disaster prevention system" is a system used for disaster prevention, and includes, for example, an emergency telephone base unit, an emergency telephone handset, and a display device.

[0017] The "emergency telephone base unit" is a device for communicating with the emergency telephone handset, and is used, for example, in emergencies (such as when a disaster such as a fire or earthquake occurs).

[0018] An "emergency telephone handset" is a device for making calls with an emergency telephone base unit; specifically, an emergency telephone handset that is located in a monitored area and is a device capable of making calls with the emergency telephone base unit; for example, a device used in an emergency.

[0019] A "display device" is at least a device that displays information indicating the location of a fire on a map showing a monitored area in the event of a fire; specifically, a device that displays symbol information corresponding to an emergency telephone handset at a position on the map that corresponds to the location of the emergency telephone handset in the monitored area, such as a so-called disaster prevention display device.

[0020] The "monitoring area" is an area to be monitored by the display device, and is a concept including, for example, an area inside a structure (a building, a tunnel, etc.), an area outside a structure, etc. The "symbol information corresponding to an emergency telephone handset" is a concept including, for example, image information indicating an emergency telephone handset.

[0021] The term "display device" is a concept that includes, for example, a device that performs a predetermined operation for establishing a call between an emergency telephone base unit and an emergency telephone handset, and when a predetermined operation is performed to select symbol information corresponding to the emergency telephone handset that is to be used to establish a call with the emergency telephone base unit, performs processing for establishing a call between the emergency telephone base unit and the emergency telephone handset that corresponds to the symbol information selected by the predetermined operation.

[0022] The "display device" is a concept that includes, for example, a means for identifying a state regarding a call between an emergency telephone base unit and an emergency telephone handset, and displaying symbol information in a display mode corresponding to the identified state.

[0023] The "state related to a call" is a state related to a call between an emergency telephone base unit and an emergency telephone handset, and specifically, is a concept including any state. In this embodiment, for example, when the display device receives a predetermined operation from a user (a predetermined operation for instructing preparation for a call), it issues a call instruction to the emergency telephone base unit, and then, when the user goes off-hook on the emergency telephone base unit side, a call is established between the emergency telephone base unit side and the emergency telephone handset side, and when the user goes on-hook on the emergency telephone base unit side or the emergency telephone handset side, the call is disconnected. In this example, the "state related to a call" may be interpreted as a concept including, for example, a normal state, a call waiting state, and a call state.

[0024] The "normal state" is, for example, a state in which a call is not being prepared for or in progress, and more specifically, a state in which the user has not yet performed a specified operation on the display device to instruct preparation for a call. The "call waiting state" is, for example, a state in which a call is being prepared for, and more specifically, a state in which the user has performed a specified operation on the display device to instruct preparation for a call but has not yet gone off-hook on the emergency telephone base unit. The "call state" is, for example, a state in which a call is being made, and more specifically, a state in which the user has performed a specified operation on the display device to instruct preparation for a call but has gone off-hook on the emergency telephone base unit.

[0025] The "display mode" refers to the manner in which the display is made, and is a concept that includes, for example, the display color, the display size, the display cycle (constant display, blinking display, etc.), and the like.

[0026] In the embodiment described below, a case will be described in which the "monitoring area" is an area inside a building.

[0027] [Specific details of the embodiment] Next, the specific contents of the embodiment will be described.

[0028] (composition) First, the configuration of the disaster prevention system according to the present embodiment will be described. Fig. 1 is a diagram showing a building to which the disaster prevention system according to the present embodiment is applied, and Fig. 2 is a plan view of the third floor of the building in Fig. 1.

[0029] The disaster prevention system 100 in FIG. 1 is a system for performing disaster prevention regarding at least a fire in the building in FIG. 1, and is applied to the building. The building is, for example, a three-story commercial facility, and the third floor of the building is provided with three staircases (first staircase to third staircase), five rooms (rooms 1 to 5), and three corridors (first corridor to third corridor) as shown in FIG. 2. Staircases, rooms, corridors, etc. are also provided appropriately in the first and second floors of the building, but in this embodiment, the third floor is the focus of the description. The disaster prevention receiver 2, the disaster prevention display device 3, and the emergency telephone master unit 4 may be installed at any position, but they are described as being installed adjacent to each other in a room corresponding to the disaster prevention room in the first floor of the building in FIG. 1. In addition, in FIG. 2, the detector 1 is illustrated with a circle for convenience of explanation, and although a plurality of detectors 1 are provided, only the detectors 131 and 132 among these detectors 1 are given reference numerals.

[0030] The disaster prevention system 100 in FIG. 1 includes, for example, a detector 1, a disaster prevention receiver 2, a disaster prevention display device 3, an emergency telephone master unit 4, and an emergency telephone handset 5. Although the detector 1 and the emergency telephone handset 5 in FIG. 1 are provided in multiple units on each floor, for convenience of explanation, FIG. 1 illustrates one unit on each floor. For convenience of explanation, the telephone side transmission line L1, the telephone line L2, and the detector side transmission line L3 are illustrated as one solid line each. In the example in FIG. 1, the telephone side transmission line L1 and the detector side transmission line L3 are mutually separated, but the telephone side transmission line L1 and the detector side transmission line L3 may be configured as a common line.

[0031] (Configuration-sensor) The detector 1 in FIG. 1 is a device that detects and reports the occurrence of a fire in the section in which it is installed, and is installed in each section on each floor, and is connected to the disaster prevention receiver 2 side via the detector side transmission line L3. For example, as shown in FIG. 2, it includes detectors 131-132 and the like installed on the third floor of a building. The specific type and configuration of the detector 1 are arbitrary, but for example, it includes a communication unit, a recording unit, and a control unit, which are not shown. The recording unit of the detector 1 stores an equipment ID for uniquely identifying the detector, and in particular, the recording units of the detectors 131-132 store "ID131" to "ID131" as equipment IDs. When the control unit of the detector 1 detects the occurrence of a fire by a known method (for example, a method of detection based on smoke density), it generates a fire occurrence signal including the equipment ID stored in its own recording unit, and transmits the generated fire occurrence signal to the disaster prevention receiver 2 via the detector side transmission line L3 to report the occurrence of a fire.

[0032] (Configuration: Disaster prevention receiver) 1 is a device that performs various processes related to disaster prevention when a fire occurrence signal is received from the detector 1. The specific configuration of this disaster prevention receiver 2 is arbitrary, and a known configuration can be applied, so detailed description will be omitted.

[0033] (Configuration-disaster prevention display device) Fig. 3 is a block diagram showing the functions of the disaster prevention display device. The disaster prevention display device 3 in Fig. 1 is the above-mentioned display device, and is connected to be able to communicate with, for example, various devices of the disaster prevention system 100 (various devices including the disaster prevention receiver 2 and the emergency telephone master unit 4). The disaster prevention display device 3 includes, for example, a communication unit 31, a display unit 32, an operation unit 33, a recording unit 34, and a control unit 35, as shown in Fig. 3.

[0034] (Configuration-Disaster Prevention Display Device-Communication Department) 3 is a communication unit that communicates with external devices (that is, each device included in the disaster prevention system 100, and various devices including the disaster prevention receiver 2 and the emergency telephone base unit 4). The specific type and configuration of this communication unit 31 are arbitrary, and it can be configured, for example, using a known communication circuit (the same applies to the communication units of other devices unless otherwise specified).

[0035] (Configuration-disaster prevention display device-display section) 3 is a display unit that displays various information. The specific type and configuration of the display unit 32 are arbitrary, but it can be configured using a display such as a known liquid crystal display or organic EL display, for example.

[0036] (Configuration - Disaster prevention display device - Operation section) The operation unit 33 in Fig. 3 is an operation means for inputting various information. The specific type and configuration of this operation unit 33 are arbitrary, but for example, it can be configured using known operation buttons, etc. Note that the operation unit 33 may be configured using a touch pad, a keyboard, a mouse, etc. instead of or together with the operation buttons.

[0037] (Configuration - Disaster prevention display device - Recording section) 3 is a recording means for recording programs and various data necessary for the operation of the disaster prevention display device 3, and is configured using, for example, a flash memory or a hard disk. However, instead of or together with the flash memory or hard disk, any other recording medium including a magnetic recording medium such as a magnetic disk, or an optical recording medium such as a DVD or a Blu-ray disk can be used (the same applies to the recording units of other devices).

[0038] The recording unit 34 stores, for example, map information, facility information, and child device information.

[0039] (Configuration - Disaster prevention display device - Recording section - Map information) The "map information" is, for example, information that specifies, as a map, a floor plan showing at least a section inside a building to which the disaster prevention system 100 is applied, for example, information that specifies, as a map, a floor plan of each floor, for example, information that specifies a map such as the floor plan shown in Fig. 2. In addition, in this embodiment, a case will be described in which map information for each floor of a building is stored, that is, map information that specifies a map such as a floor plan of the first floor (hereinafter also referred to as "map information for the first floor"), map information that specifies a map such as a floor plan of the second floor (hereinafter also referred to as "map information for the second floor"), and map information that specifies a map such as a floor plan of the third floor (i.e., the floor plan in Fig. 2) (hereinafter also referred to as "map information for the third floor") are stored. The specific method for storing such map information is arbitrary, but for example, when map information is input into the disaster prevention display device 3 using any method (for example, a method for inputting information using a recording medium such as a memory stick, or a method in which the administrator sends and inputs information from his or her own terminal), the control unit 35 stores the map information (the same applies to the equipment information and child unit information described below).

[0040] (Configuration - Disaster prevention display device - Recording section - Equipment information) "Facility information" is information that identifies each piece of equipment (equipment other than the emergency telephone handset 5) that is each device included in the disaster prevention system 100. FIG. 4 is a diagram illustrating an example of facility information. For example, as shown in FIG. 4, this facility information associates information corresponding to the item "facility ID," information corresponding to the item "facility type information," and information corresponding to the item "installation location information" with each other.

[0041] The information corresponding to the item "equipment ID" is equipment identification information (the identification information is also referred to as "ID") for uniquely identifying each piece of equipment. This equipment ID is arbitrary, but for example, it is assumed that an equipment ID is set for the detector 1 as described above, and this equipment ID is recorded. In FIG. 4, for example, "ID131" to "ID132" that uniquely identify the detectors 131 to 132 in FIG. 2 are stored. The information corresponding to the item "equipment type information" is equipment type information that identifies the type of equipment (in FIG. 4, it is "detector" that identifies the type of detector 1, etc.). The information corresponding to the item "installation position information" is installation position information that identifies the position where each piece of equipment is installed (in FIG. 4, it is assumed that information that identifies the floor on which each piece of equipment is installed and the position on the map identified by the above-mentioned map information is stored, for example, "3rd floor, first staircase" that identifies the first staircase on the third floor, etc.).

[0042] The information at the top of such equipment information (information on the combination of "ID131," "detector," and "3rd floor, 1st staircase") indicates that the type of detector 131 (Figure 2) identified by "equipment ID" = "ID131" is "detector" indicated by the "equipment type information," and that the location where detector 131 is installed is "3rd floor, 1st staircase" (i.e., the first staircase on the 3rd floor of the building) indicated by the "installation location information."

[0043] (Configuration - Disaster prevention display device - Recording section - Child unit information) The "handset information" is information for identifying an emergency telephone handset included in the disaster prevention system 100. Fig. 5 is a diagram illustrating an example of handset information. As shown in Fig. 5, for example, this handset information is mutually associated with information corresponding to the item "handset address information" and information corresponding to the item "installation location information."

[0044] The information corresponding to the item "handset address information" is handset address information that specifies an address set in each emergency telephone handset 5 to uniquely identify the emergency telephone handset 5 in communication. This handset address information is arbitrary, but for example, handset address information that specifies an address set in each emergency telephone handset 5 is stored in the recording unit 55 (described later) of the emergency telephone handset 5, and this handset address information is stored. Here, for example, "ADr531" to "Adr533" are stored as handset address information in the recording unit 55 of the emergency telephone handsets 531 to 533 in Fig. 2, and these "ADr531" to "Adr533" are stored as the handset address information in Fig. 5. The information corresponding to the item "Installation location information" is the same as the information of the same name in Figure 2, and specifically, it is installation location information that identifies the location where the emergency telephone handset 5 is installed (in Figure 5, information is stored that identifies the floor on which the emergency telephone handset 5 is installed and the location on the map identified by the above-mentioned map information, for example, "3rd floor, 1st stairs" that identifies the first stairs on the 3rd floor).

[0045] The topmost piece of information in this handset information (the combination of "Adr531" and "3rd floor, 1st staircase") indicates that the emergency telephone handset 531, for which "handset address information" = "Adr531", is installed at "3rd floor, 1st staircase" (i.e., the first staircase on the 3rd floor of the building) as indicated by the "installation location information".

[0046] (Configuration - Disaster prevention display device - Control unit) The control unit 35 in Fig. 3 is also a control means for controlling the disaster prevention display device 3, and is specifically a computer including a CPU, various programs interpreted and executed on the CPU (including basic control programs such as an OS, and application programs that are started on the OS and realize specific functions), and an internal memory such as a RAM for storing programs and various data (this also applies to control units of other devices). In particular, the control program according to the embodiment is installed in the disaster prevention display device 3 via an arbitrary recording medium or a network, thereby substantially configuring each unit of the control unit 35 (this also applies to control units of other devices). The processing performed by the control unit 35 will be described later.

[0047] (Configuration: Emergency telephone base unit) Fig. 6 is a block diagram showing the functions of the emergency telephone master unit. The emergency telephone master unit 4 in Fig. 1 is connected to various devices (including the disaster prevention display device 3) of the disaster prevention system 100 so as to be able to communicate with each other, and is also connected to each emergency telephone handset 5 via a telephone side transmission line L1 and a telephone line L2.

[0048] The telephone side transmission line L1 is, for example, a line through which various signals are transmitted for various controls such as establishing or disconnecting a call via the telephone line L2 between the emergency telephone base unit 4 and the emergency telephone handset 5. The telephone line L2 is, for example, a line through which a call is made between the emergency telephone base unit 4 and the emergency telephone handset 5, and is a line through which a voice signal of a predetermined frequency band is transmitted.

[0049] The emergency telephone master unit 4 includes, for example, a communication unit 41, a master telephone unit 42, a display unit 43, an operation unit 44, an audio unit 45, a recording unit 46, and a control unit 47, as shown in FIG.

[0050] (Configuration - Emergency telephone base unit - Communication unit) The communication unit 41 in FIG. 6 is a communication means for communicating various signals with the emergency telephone handset 5 via the telephone side transmission line L1.

[0051] (Configuration - Emergency telephone base unit - Base telephone section) The parent telephone unit 42 in Fig. 6 is a communication means for realizing a function of making a call with the emergency telephone handset 5, and is a means for communicating a voice signal via the telephone line L2. The configuration of this parent telephone unit 42 is arbitrary, and any configuration including a known configuration (for example, the configuration described in JP 2019-129362 A) can be applied, so only the outline will be described. This parent telephone unit 42 can be configured to include, for example, a parent telephone 421, a parent switch circuit 422, and a parent hook switch 423.

[0052] The parent telephone 421 is the part that is held by the user when making a call, and is equipped, for example, with a handset, a transmitter, and a case to house the handset and transmitter (for example, a well-known case that the user can hold and place against the user's ear and mouth).

[0053] The parent switch circuit 422 is electrically connected between the parent telephone 421 and the telephone line L2, and is a switch circuit that electrically connects (i.e., turns "on") the parent telephone 421 and the telephone line L2 to each other, or electrically disconnects (i.e., turns "off") the parent telephone 421 and the telephone line L2 from each other.

[0054] The parent hook switch 423 is a switch for detecting whether the parent telephone 421 is held in a holding section (not shown) of the housing of the emergency telephone parent unit 4 or has been removed from the holding section. The parent hook switch 423 is configured to output an off-hook signal (i.e., a signal indicating that the parent telephone 421 has been removed from the holding section) to the control unit 47 after detecting the removal (i.e., after detecting the off-hook) when the parent telephone 421 is removed from the holding section by the user to make a call (i.e., when the user turns off the hook). The parent hook switch 423 is configured to output an on-hook signal (i.e., a signal indicating that the parent telephone 421 has been returned to the holding section and held) to the control unit 47 after detecting the return and holding (i.e., after detecting the on-hook) when the parent telephone 421 is returned to the holding section and held by the user when the call is ended (i.e., when the user turns on the hook).

[0055] (Configuration - Emergency telephone base unit - Display unit) The display unit 43 in Fig. 6 is a display means for displaying various information. The specific type and configuration of the display unit 43 are arbitrary, but for example, it can be configured using various indicator lights that display information by emitting light, or any display (such as a 7-segment display, for example).

[0056] (Configuration - Emergency telephone base unit - Operation unit) 6 is an operation unit for inputting various information. The specific type and configuration of this operation unit 44 are arbitrary, but it can be configured using, for example, known operation buttons.

[0057] (Configuration - Emergency telephone base unit - Audio section) 6 is an audio unit for outputting various types of sound information. The specific type and configuration of this audio unit 45 are arbitrary, but it can be configured using a known speaker, for example.

[0058] (Configuration - Emergency telephone base unit - Recording unit) The recording unit 46 in FIG. 6 is a recording means for recording programs and various data required for the operation of the emergency telephone base unit 4.

[0059] (Configuration - Emergency telephone base unit - Control unit) 6 also serves as a control means for controlling the emergency telephone master unit 4. The processing performed by the control unit 47 will be described later.

[0060] (Configuration-Emergency phone handset) Fig. 7 is a block diagram showing the functions of the emergency telephone handset 5. The emergency telephone handset 5 in Fig. 1 is connected to the emergency telephone base unit 4 via, for example, a telephone transmission line L1 and a telephone line L2.

[0061] The emergency telephone handset 5 includes, for example, a communication unit 51, a slave telephone unit 52, a display unit 53, an audio unit 54, a recording unit 55, and a control unit 56, as shown in FIG.

[0062] (Configuration-Emergency phone handset-Communication department) A communication unit 51 in FIG. 7 is a communication means for communicating various signals with the emergency telephone master unit 4 via the telephone side transmission line L1.

[0063] (Configuration-Emergency phone handset-Slave phone part) The child telephone unit 52 in Fig. 7 is a communication means for realizing a function of making a call with the emergency telephone base unit 4, and is a means for communicating a voice signal via the telephone line L2. The configuration of this child telephone unit 52 is arbitrary, and can be configured in the same manner as the base telephone unit 42 in Fig. 6, and can be configured to include, for example, a child telephone set 521, a child switch circuit 522, and a child hook switch 523.

[0064] The child telephone 521 is a part held by the user when making a call, and can be configured, for example, in the same manner as the parent telephone 421 in FIG.

[0065] The child side switch circuit 522 can be configured in the same manner as the parent side switch circuit 422 in Figure 6, that is, it is electrically connected between the child side telephone 521 and the telephone line L2 and is a switch circuit that electrically connects the child side telephone 521 and the telephone line L2 to each other (i.e., "on") or electrically disconnects the child side telephone 521 and the telephone line L2 from each other (i.e., "off").

[0066] The child hook switch 523 is a switch for detecting whether the child telephone 521 is held in a holding section (not shown) of the housing of the emergency handset 5 or has been removed from the holding section. This child hook switch 523 can be configured in the same manner as the parent hook switch 423. That is, for example, when the child telephone 521 is removed from the holding section by the user to make a call (i.e., when it is off-hook), the case will be described in which the child hook switch 523 is configured to detect the removal (i.e., when it detects off-hook) and output an off-hook signal (i.e., a signal indicating that the child telephone 521 has been removed from the holding section) to the control unit 56. Also, for example, when the child telephone 521 is returned to the holding section and held by the user when the call is ended (i.e., when it is on-hook), the case will be described in which the child hook switch 523 is configured to detect the return and holding (i.e., when it detects on-hook) and output an on-hook signal (i.e., a signal indicating that the child telephone 521 has been returned to the holding section and held) to the control unit 56.

[0067] (Configuration - emergency phone handset - display) The display unit 53 in FIG. 7 is a display means for displaying various information, and can be configured, for example, in the same manner as the display unit 43 in FIG.

[0068] (Configuration-Emergency phone handset-Sound part) The audio section 54 in FIG. 7 is an audio means for outputting various types of sound information, and can be configured, for example, in the same manner as the audio section 45 in FIG.

[0069] (Configuration - Emergency telephone handset - Recording unit) 7 is a recording means for recording programs and various data necessary for the operation of the emergency telephone handset 5. As described above, the recording unit 55 stores, for example, handset address information.

[0070] (Configuration - Emergency telephone handset - Control unit) 7 also serves as a control means for controlling the emergency telephone handset 5. The processing performed by the control unit 56 will be described later.

[0071] (process) Next, a fire location display process and a call process among the disaster prevention processes executed by the disaster prevention system 100 configured as above will be described.

[0072] (Processing - Fire location display processing) First, the fire location display process will be described. FIG. 8 is a flowchart of the fire location display process (in the following description of each process, steps will be abbreviated as "S"). The "fire location display process" is, in outline, a process performed by the disaster prevention display device 3, and is, for example, a process for displaying information indicating the location of a fire that has occurred on a map indicating a monitoring area when a fire has occurred. The timing for executing this fire location display process is arbitrary, but for example, when each device of the disaster prevention system 100 is powered on, repeated execution is started, and the description will begin from the point where the execution of the fire location display process has started. Here, the description will be given by taking, for example, a case where a fire has occurred on the first staircase (the part shown in the upper left of the drawing) on ​​the third floor of the building shown in FIG. 2 as an example.

[0073] In SA1 of FIG. 8, the control unit 35 of the disaster prevention display device 3 judges whether or not a fire has occurred. Although the specific details are arbitrary, for example, when the detector 1 detects a fire, the control unit 35 transmits a fire occurrence signal including an equipment ID for identifying the detector 1 itself to the disaster prevention receiver 2 via the detector side transmission line L3, and when the disaster prevention receiver 2 receives the fire occurrence signal, the control unit 35 transmits fire occurrence information (information indicating that a fire has occurred) including the equipment ID included in the fire occurrence signal to the disaster prevention display device 3. If the control unit 35 of the disaster prevention display device 3 has not received the fire occurrence information, the control unit 35 judges that a fire has not occurred (NO in SA1) and repeatedly executes SA1 until it judges that a fire has occurred. If the control unit 35 has received the fire occurrence information, the control unit 35 judges that a fire has occurred (YES in SA1) and moves to SA2.

[0074] The processing here may be changed as desired. For example, the control unit 35 of the disaster prevention display device 3 may be configured to directly receive a fire occurrence signal from the detector 1, and then perform processing of SA1 based on whether or not the fire occurrence signal has been received.

[0075] Here, for example, if a fire breaks out on the first staircase (the part shown in the upper left of the drawing) on ​​the third floor of the building shown in Fig. 2, the detector 131 detects the fire and transmits a fire occurrence signal including its own facility ID "ID131" to the disaster prevention receiver 2, and when the disaster prevention receiver 2 receives the fire occurrence signal, it transmits fire occurrence information including "ID131" contained in the signal to the disaster prevention display device 3. In this case, the control unit 35 of the disaster prevention display device 3 receives the fire occurrence information including "facility ID" = "ID131" and determines that a fire has occurred (YES in SA1).

[0076] In SA2 in Fig. 8, the control unit 35 of the disaster prevention display device 3 identifies the location of the fire that has occurred (i.e., the position where the fire has occurred). Specifically, although this is arbitrary, for example, the control unit 35 acquires an equipment ID included in the fire occurrence information received in SA1, refers to the equipment information in Fig. 4, acquires installation location information associated with the acquired equipment ID, and identifies the position indicated by the acquired installation location information as the location where the fire has occurred.

[0077] Here, for example, the "equipment ID" = "ID131" contained in the fire outbreak information received by SA1 is obtained, and by referring to the equipment information in Figure 5, the "installation location information" = "3rd floor, 1st staircase" associated with the aforementioned "equipment ID" = "ID131" is obtained, and the first staircase on the 3rd floor indicated by the obtained "3rd floor, 1st staircase" is identified as the location of the fire.

[0078] At SA3 in Fig. 8, the control unit 35 of the disaster prevention display device 3 displays a fire location display screen. Fig. 9 is a diagram illustrating an example of the fire location display screen.

[0079] ===Fire location display screen=== The "fire location display screen" is, for example, a screen that displays the location where a fire has occurred, and is, for example, an image including a map image G500, a fire symbol image G501, and handset symbol images G531 to G533. It is preferable to include the handset symbol images G531 to G533 in the "fire location display screen", but they may be omitted. The "map image" G500 is an image showing a map such as a floor plan of each floor of a building. The "fire symbol image" G501 is information showing the location of the fire that has occurred, and is, for example, a symbol image showing an image of a flame that is displayed at a position corresponding to the position where the fire has occurred. The "handset symbol images" G531 to G533 are information displayed at a position corresponding to the installation position of the emergency telephone handset 5, and are, for example, symbol images showing an image of a telephone.

[0080] ===Processing=== The specific process of SA3 in Fig. 8 is arbitrary, but for example, first, map information corresponding to the floor indicated by the location specified in SA2 is acquired from "map information for the first floor" to "map information for the third floor" stored as map information in the recording unit 34 in Fig. 3, and the slave unit address information associated with the installation position information corresponding to the floor indicated by the location specified in SA2 is identified by referring to the slave unit information in Fig. 5. Next, a map image corresponding to the acquired map information is generated, and a fire symbol image is superimposed and displayed at a position corresponding to the location specified in SA2 on the generated map image, and a slave unit symbol image is superimposed and displayed at a position corresponding to the position indicated by the installation position information associated with the specified slave unit address information on the generated map image, thereby generating a fire position display screen, and displaying the generated fire position display screen on the display unit 32.

[0081] In this case, each child unit symbol image is displayed superimposed in a state in which it is associated with the child unit address information (i.e., the specified child unit address information (FIG. 5)) installed at the position where each child unit symbol image is displayed. The state in which the child unit address information is associated may be interpreted as meaning that, for example, when a user clicks and selects a child unit symbol image using the operation unit 33, the child unit address information associated with the selected child unit symbol image is input to the disaster prevention display device 3.

[0082] Here, for example, first, from among the "map information for the 1st floor" to "map information for the 3rd floor" stored as map information in the recording unit 34 in Figure 3, "map information for the 3rd floor" is obtained as map information corresponding to the "3rd floor" which is the floor indicated by the "first staircase on the 3rd floor" which is the location identified by SA2, and then, by referring to the child unit information in Figure 5, the "child unit address information" = "Adr531", "Adr532", and "Adr533" which are associated with the "installation location information" = "3rd floor, first staircase", "3rd floor, second corridor", and "3rd floor, third corridor" which correspond to the "3rd floor" which is the floor indicated by the location identified by SA2 are identified. Next, a map image 500 corresponding to the "map information for the 3rd floor", which is the acquired map information mentioned above, is generated, and a fire symbol image G501 is superimposed and displayed on the generated map image 500 at a position corresponding to "the first staircase on the 3rd floor", which is the location identified by SA2.Furthermore, by superimposing and displaying on the generated map image 500 the child unit symbol images G531 to G533 at positions corresponding to the positions indicated by the "installation location information" = "3rd floor, first staircase", "3rd floor, second corridor", and "3rd floor, third corridor" associated with the identified child unit address information mentioned above, the fire location display screen of Figure 9 is generated, and the generated fire location display screen is displayed on the display unit 32.

[0083] In this case, the child unit symbol image G531 is associated with "child unit address information" = "Adr531", the child unit symbol image G532 is associated with "child unit address information" = "Adr532", and the child unit symbol image G533 is associated with "child unit address information" = "Adr533". In other words, in this case, when the user clicks and selects the child unit symbol images G531 to G533 using the operation unit 33, the "child unit address information" = "Adr531", "Adr532", and "Adr533" associated with the clicked child unit symbol images G531 to G533 are input to the disaster prevention display device 3.

[0084] By visually checking the fire location display screen displayed on the display unit 32 in this manner, it becomes possible to recognize the location of the fire and take appropriate measures. This ends the fire location display process.

[0085] (Processing - Call Processing) Next, the call processing will be described. Fig. 10 and Fig. 11 are flowcharts of the call processing. The "call processing" is, in outline, processing performed by the disaster prevention display device 3, the emergency telephone base unit 4, and the emergency telephone handset 5. The timing of executing this call processing is arbitrary, but for example, it is assumed that the call processing is started when the user performs a predetermined operation via the operation unit 33 of the disaster prevention display device 3 to input call processing start information to the disaster prevention display device 3, and the description will begin from the point where the execution of the call processing starts. The "call processing start information" is information corresponding to a command for starting the call processing, and is, for example, information including floor information indicating the floor on which the emergency telephone handset 5 that is the target of the call with the emergency telephone base unit 4 is installed.

[0086] Here, for example, a case will be described in which the emergency telephone base unit 4 calls the emergency telephone handset 531 in Fig. 2 and these devices communicate with each other. That is, a case will be described in which the call processing is started when the user on the emergency telephone base unit 4 side inputs call processing start information including "floor information" = "3rd floor" (floor information indicating the floor on which the emergency telephone handset 531 is installed) to the emergency telephone base unit 4 via the operation unit 33 of the disaster prevention display device 3. Also, when the call processing is started, the base telephone 421 in Fig. 6 is held (i.e., on-hook) in a holding section (not shown) of the housing of the emergency telephone base unit 4, and each child telephone 521 in Fig. 7 is also held (i.e., on-hook) in a holding section (not shown) of the housing of the emergency telephone handset 5. In addition, when the call processing is started, the parent switch circuit 422 in FIG. 6 is "off", so that the parent telephone 421 and the telephone line L2 are electrically isolated from each other, and the child switch circuit 522 in FIG. 7 is also "off", so that the child telephone 521 and the telephone line L2 are electrically isolated from each other.

[0087] In SB1 of FIG. 10, the control unit 35 of the disaster prevention display device 3 displays a handset selection screen. FIG. 12 is a diagram illustrating an example of a handset selection image. The "handset selection image" is, for example, an image for selecting an emergency telephone handset 5 to be a call target, and is, for example, an image including a map image G500 and handset symbol images G531 to G533. The process of SB1 is specifically arbitrary, and for example, a part of it is the same as the process of SA3 of FIG. 8. That is, first, map information corresponding to the floor indicated by the floor number information included in the "call processing start information" input at the time of starting the call processing is obtained from among the "map information for the first floor" to the "map information for the third floor" stored as map information in the recording unit 34 of FIG. 3, and also, referring to the handset information of FIG. 5, the handset address information associated with the installation position information corresponding to the floor indicated by the above-mentioned floor number information is specified. Next, a map image corresponding to the acquired map information is generated, and a sub-unit symbol image is superimposed and displayed on the generated map image at a position corresponding to the position indicated by the installation location information associated with the identified sub-unit address information, thereby generating an image for selecting a sub-unit, and the generated image for selecting a sub-unit is displayed on the display unit 32.

[0088] In this case, as in the case described above, each handset symbol image is displayed superimposed in association with the handset address information (i.e., the above-mentioned specified handset address information (Figure 5)) of the handset installed at the position where each handset symbol image is displayed. Also, in this case, since the "prescribed operation to instruct preparation for a call" has not yet been performed, the above-mentioned "normal state" is specified, and the handset symbol image in the handset selection image is displayed in "cyan" as the display mode corresponding to the "normal state."

[0089] Here, for example, first, from among the "map information for the 1st floor" to "map information for the 3rd floor" stored as map information in the recording unit 34 in Figure 3, the "map information for the 3rd floor" is obtained as the map information corresponding to the 3rd floor indicated by the "floor information" = "3rd floor" included in the "call processing start information" input when the call processing is started, and then, by referring to the handset information in Figure 5, the "handset address information" = "Adr531", "Adr532", and "Adr533" associated with the "installation location information" = "3rd floor, 1st staircase", "3rd floor, 2nd corridor", and "3rd floor, 3rd corridor" corresponding to the 3rd floor indicated by the aforementioned "floor information" = "3rd floor" are identified. Next, a map image G500 corresponding to the "map information for the third floor" which is the above-mentioned acquired map information is generated, and the child unit symbol images G531 to G533 are superimposed and displayed on the generated map image G500 at positions corresponding to the positions indicated by the "installation location information" = "3rd floor, first staircase", "3rd floor, second hallway", and "3rd floor, third hallway" which are associated with the above-mentioned specified child unit address information, thereby generating the child unit selection image of Fig. 12, and displaying the generated child unit selection image on the display unit 32. In this case, the "normal state" is specified, and the child unit symbol images G531 to G533 are displayed in "cyan".

[0090] In SB2 of FIG. 10, the control unit 35 of the disaster prevention display device 3 judges whether to instruct the call preparation. Specifically, although it is arbitrary, for example, the control unit 35 monitors the operation unit 33 to judge whether or not a "predetermined operation for instructing the call preparation" has been performed, and judges based on the judgment result. The "predetermined operation for instructing the call preparation" is, for example, a predetermined operation for establishing a call between the emergency telephone base unit 4 and the emergency telephone handset 5, and an example is an operation of clicking and selecting the handset symbol image G531 on the handset selection screen of FIG. 12. Then, when it is judged that the "predetermined operation for instructing the call preparation" has not been performed, it is judged that the call preparation is not to be instructed (NO in SB2), and SB2 is repeatedly executed until it is judged that the call preparation is to be instructed. On the other hand, when it is judged that the "predetermined operation for instructing the call preparation" has been performed, it is judged that the call preparation is to be instructed (YES in SB2), and the process proceeds to SB3.

[0091] Here, for example, if the user clicks and selects the handset symbol image G531 in Figure 12 via the operation unit 33, it is determined that a "predetermined operation for instructing preparation for a call" has been performed, and it is then determined that the user is instructing preparation for a call (YES in SB2).

[0092] In SB3 of Fig. 10, the control unit 35 of the disaster prevention display device 3 changes the display mode of the handset symbol image in the handset selection image. Specifically, although the change is arbitrary, for example, the above-mentioned "call waiting state" is specified, and the handset symbol image selected in SB2 in the handset selection image is displayed in "yellow" as a display mode corresponding to the "call waiting state."

[0093] Here, for example, the "call waiting state" is specified, and the handset symbol image G531 selected by SB2 in the handset selection image is displayed in "yellow." In this case, the handset symbol images G532 to G533 remain displayed in "cyan."

[0094] In SB4 of FIG. 10, the control unit 35 of the disaster prevention display device 3 transmits a call preparation signal to the emergency telephone base unit 4. The "call preparation signal" is a signal for instructing preparation for a call, and is, for example, a signal including handset address information of the emergency telephone base unit 5 to be called (i.e., the emergency telephone base unit 5 to be called and a call established). Specifically, regarding the processing of SB3, for example, as described above, the handset symbol image displayed on the handset selection screen is associated with handset address information, and when the handset symbol image is selected, the handset address information associated with the selected handset symbol image is input, and the following processing is performed. In detail, by performing a "predetermined operation for instructing preparation for a call" (an operation of clicking and selecting the handset symbol image), the handset address information input to the disaster prevention display device 3 (the handset address information associated with the clicked handset symbol image) is obtained, a call preparation signal including the obtained handset address information is generated, and the generated call preparation signal is transmitted to the emergency telephone base unit 4. The process of SB4 may be interpreted as corresponding to "processing for establishing a call between the emergency telephone handset 5 and the emergency telephone base unit 4."

[0095] Here, for example, in the "specified operation for instructing preparation for a call" of SB2, the handset symbol image G531 in Figure 12 is selected, so that the "handset address information" = "Adr531" associated with the handset symbol image G531 is input to the disaster prevention display device 3, and a call preparation signal including this "handset address information" = "Adr531" is generated and transmitted.

[0096] On the other hand, in SC1 of Fig. 10, the control unit 47 of the emergency base unit 4 receives a call preparation signal transmitted via SB4. Here, for example, the call preparation signal including "handset address information" = "Adr531" is received.

[0097] At SC2 in Fig. 10, the control unit 47 of the emergency telephone base unit 4 indicates that a call preparation signal has been received. Here, for example, the indicator light of the display unit 43 is flashed or information is displayed on a 7-segment display to indicate that the call preparation signal has been received and that the emergency telephone base unit 4 is waiting to be called (i.e., waiting to be off-hooked). In this case, users around the emergency telephone base unit 4 can recognize that the emergency telephone base unit 4 is waiting to be called by visually checking the display unit 43.

[0098] In SC3 of Fig. 10, the control unit 47 of the emergency telephone master unit 4 judges whether to make a call (i.e., judges whether to make a call). Specifically, the judgment is arbitrary, but for example, it is made based on whether the master telephone 421 in Fig. 6 has been removed from the holding unit. Then, if the master telephone 421 has not been removed from the holding unit (i.e., the user has not yet held the master telephone 421) and the master hook switch 423 has not output an off-hook signal, it judges not to make a call (NO in SC3) and repeatedly executes SC3 until it judges to make a call. On the other hand, if the master telephone 421 has been removed from the holding unit (i.e., the user has held the master telephone 421) and the master hook switch 423 has output an off-hook signal, it judges to make a call (YES in SC3) and moves to SC4.

[0099] Here, for example, when a user near the emergency telephone base unit 4 holds the parent telephone 421 to make a call, the parent hook switch 423 detects off-hook and outputs an off-hook signal, and in this case it is determined that a call will be made (YES in SC3).

[0100] 10, the control unit 47 of the emergency telephone base unit 4 transmits a call signal to the emergency telephone handset 5. The "call signal" is a signal for establishing a call, and is, for example, a signal including handset address information of the emergency telephone handset 5 of the call destination (i.e., the emergency telephone handset 5 that is the target of the call to establish a call). Specifically, the process of SC3 is, for example, to obtain the handset address information included in the call preparation signal received in SC1, generate a call signal including the obtained handset address information, and transmit the generated call signal to the emergency telephone handset 5 via the telephone side transmission line L1 (FIG. 1).

[0101] Here, for example, the "handset address information" = "Adr531" included in the call preparation signal received by SC1 is acquired, a call signal including the acquired "handset address information" = "Adr531" is generated, and the generated call signal is transmitted to the emergency telephone handset 5 via the telephone side transmission line L1. In this case, the call signal reaches all of the emergency telephone handset 5.

[0102] On the other hand, in SD1 of Fig. 10, the control unit 56 of the emergency telephone handset 5 receives the call signal transmitted in SC4 via the telephone side transmission line L1. Here, for example, the call signal including "handset address information" = "Adr531" is received.

[0103] In SD2 of FIG. 10, the control unit 56 of the emergency telephone handset 5 judges whether or not to connect the call. Specifically, the judgment is arbitrary, but for example, the judgment is made based on whether or not the call signal received by SD1 is a call signal for establishing a call with the emergency telephone handset 5. Then, the control unit 56 acquires handset address information included in the call signal received by SD1, and compares the acquired handset address information with the handset address information recorded in the recording unit 55 of the emergency telephone handset 5. If the handset address information does not match each other, the control unit 56 judges that the call signal received by SD1 is not a call signal for establishing a call with the emergency telephone handset 5, and therefore judges that the call should not be connected (NO in SD2), and executes SD2 again. On the other hand, if the compared handset address information matches each other, the control unit 56 judges that the call signal received by SD1 is a call signal for establishing a call with the emergency telephone handset 5, and therefore judges that the call should be connected (YES in SD2), and moves to SD3.

[0104] Here, for example, the emergency telephone handset 531 in Fig. 2 acquires the "handset address information" = "Adr531" contained in the call signal received at SD1, compares the acquired "handset address information" = "Adr531" with the "handset address information" = "Adr531" recorded in its own recording unit 55, and since the respective handset address information matches each other, it determines that the call signal received at SD1 is a call signal for establishing a call with itself, and therefore determines that the call should be connected (YES in SD2). On the other hand, for example, the emergency telephone handset 532-533 in Fig. 2 and the emergency telephone handset 5 on the first and second floors determine that the call should not be connected (NO in SD2).

[0105] In SD3 of Fig. 10, the control unit 56 of the emergency telephone handset 5 transmits a response signal to the emergency telephone base unit 4 via the telephone side transmission line L1 (Fig. 1). The "response signal" is a signal for notifying the emergency telephone base unit 4 that a call signal for establishing a call with the emergency telephone handset 5 has been received. Here, for example, the emergency telephone handset 531 of Fig. 2 transmits the response signal.

[0106] In SD4 of Fig. 10, the control unit 56 of the emergency telephone handset 5 establishes a call. Specifically, although it is arbitrary, for example, the child telephone 521 and the telephone line L2 are electrically connected to each other by turning on the child switch circuit 522 of Fig. 7. Here, for example, the emergency telephone handset 531 of Fig. 2 electrically connects its own child telephone 521 and the telephone line L2 to each other by turning on its own child switch circuit 522.

[0107] 10, the control unit 47 of the emergency telephone base unit 4 receives the response signal transmitted at SD3 via the telephone-side transmission line L1. Here, for example, the response signal transmitted from the child telephone set 521 is received.

[0108] In SC6 of Fig. 10, the control unit 47 of the emergency telephone master unit 4 establishes a call. Specifically, it is optional and similar to SD4, but for example, by turning on the master switch circuit 422 in Fig. 6, the master telephone 421 and the telephone line L2 are electrically connected to each other. In this case, in the above-mentioned SD4, the slave telephone 521 of the emergency telephone handset 531 in Fig. 2 is connected to the telephone line L2, and the master telephone 421 of the emergency telephone master unit 4 is connected to the telephone line L2, so that the emergency telephone master unit 4 and the emergency telephone handset 531 are connected to each other via the telephone line L2, and a call between the emergency telephone master unit 4 and the emergency telephone handset 531 is established. In other words, the user on the emergency telephone master unit 4 side and the user on the emergency telephone handset 531 side can talk to each other using the emergency telephone master unit 4 and the emergency telephone handset 531.

[0109] 10, the control unit 47 of the emergency telephone base unit 4 transmits an establishment notification signal to the disaster prevention display device 3. The "establishment notification signal" is a signal for notifying the disaster prevention display device 3 that a call has been established.

[0110] On the other hand, at SB5 in FIG. 11, the control unit 35 of the disaster prevention display device 3 receives the establishment notification signal transmitted at SC7.

[0111] In SB6 in Fig. 11, the control unit 35 of the disaster prevention display device 3 changes the display mode of the handset symbol image in the handset selection image. Specifically, although this is arbitrary, for example, the above-mentioned "call status" is specified, and the handset symbol image selected in SB2 in the handset selection image is displayed in "green" as a display mode corresponding to the "call status." Here, for example, the "call status" is specified, and the handset symbol image G531 selected in SB2 in the handset selection image is displayed in "green."

[0112] On the other hand, in SC8 of Fig. 11, the control unit 47 of the emergency telephone master unit 4 judges whether or not to disconnect the call. Specifically, the judgment is arbitrary, but for example, the judgment is made based on whether or not the master telephone 421 in Fig. 6 has been returned to the holding unit and held. Then, if the master telephone 421 has not been returned to the holding unit and held (i.e., the user is still holding the master telephone 421) and the master hook switch 423 has not output an on-hook signal, it judges not to disconnect the call (NO in SC8) and executes SC8 again. On the other hand, if the master telephone 421 has been returned to the holding unit and held (i.e., the user has returned the master telephone 421 to the holding unit) and the master hook switch 423 has output an on-hook signal, it judges to disconnect the call (YES in SC8) and moves to SC9.

[0113] Here, for example, if a user who was talking on the emergency telephone base unit 4 returns the base telephone 421 to the holding section of the emergency telephone base unit 4 to hang up the phone, the base hook switch 423 detects on-hook and outputs an on-hook signal, and in this case it is determined that the call should be disconnected (YES in SC8).

[0114] In SC9 of FIG. 11, the control unit 47 of the emergency telephone master 4 performs a process to disconnect the call. Specifically, the control unit 47 may, for example, electrically disconnect the master telephone 421 from the telephone line L2 by turning off the master switch circuit 422 of FIG. 6, although this is optional. Also, a disconnection notification signal is sent to the disaster prevention display device 3. The "disconnection notification signal" is a signal for notifying the disaster prevention display device 3 that the call has been disconnected. Also, although not shown, a process is performed to electrically disconnect the slave telephone 521 from the telephone line L2 in the emergency telephone handset 5 that was the subject of the call. More specifically, this process is performed by sending a slave disconnection signal (a signal for electrically disconnecting the slave telephone 521 from the telephone line L2) to the emergency telephone handset 5 via the telephone transmission line L1. Meanwhile, the control unit 56 of the emergency telephone handset 5 that has received the slave disconnection signal electrically disconnects the slave telephone 521 from the telephone line L2 by turning off the slave switch circuit 522 of FIG. 7.

[0115] Here, for example, by turning "off" the parent switch circuit 422 in Fig. 6, the parent telephone 421 and the telephone line L2 are electrically disconnected from each other, a disconnection notification signal is sent to the disaster prevention display device 3, and a child cutoff signal is sent to the emergency telephone handset 5. Meanwhile, the emergency telephone handset 531 that receives the child cutoff signal turns "off" its own child switch circuit 522, thereby electrically disconnecting the child telephone 521 and the telephone line L2 from each other. Meanwhile, the emergency telephone handsets 532-533 and the emergency telephone handsets 5 on the first and second floors in Fig. 2 do not have their own child switch circuits 522 turned "on" but remain "off", so no control may be performed.

[0116] On the other hand, in SD5 of Fig. 11, the control unit 56 of the emergency telephone handset 5 judges whether or not to disconnect the call. Specifically, this is optional and similar to SC8, but for example, the judgment is made based on whether or not the child telephone 521 in Fig. 7 has been returned to the holding unit and held. Then, if the child telephone 521 has not been returned to the holding unit and held (i.e., the user is still holding the child telephone 521) and the child hook switch 523 has not output an on-hook signal, it judges not to disconnect the call (NO in SD5) and executes SD5 again. On the other hand, if the child telephone 521 has been returned to the holding unit and held (i.e., the user has returned the child telephone 521 to the holding unit) and the child hook switch 523 has output an on-hook signal, it judges to disconnect the call (YES in SD5) and moves to SD6.

[0117] Here, for example, when a user who was talking on the emergency telephone handset 5 returns the child telephone 521 to the holding section of the emergency telephone handset 5 to hang up the phone, the child hook switch 523 detects on-hook and outputs an on-hook signal, and in this case it is determined that the call should be disconnected (YES in SD5).

[0118] On the other hand, in SD6 of Fig. 11, the control unit 56 of the emergency telephone handset 5 performs processing to disconnect the call. Specifically, this is optional and is the same as SC9, but for example, the child side switch circuit 522 of Fig. 7 is turned "off" to electrically disconnect the child side telephone 521 and the telephone line L2 from each other. Also, although not shown, processing is performed to electrically disconnect the parent side telephone 421 and the telephone line L2 in the emergency telephone master unit 4 that was the subject of the call from each other. In detail, this processing is performed by transmitting a parent side disconnection signal (a signal for electrically disconnecting the parent side telephone 421 and the telephone line L2 from each other) to the emergency telephone master unit 4 via the telephone side transmission line L1. On the other hand, the control unit 47 of the emergency telephone master unit 4 that has received the parent side disconnection signal turns "off" the parent side switch circuit 422 of Fig. 6 to electrically disconnect the parent side telephone 421 and the telephone line L2 from each other. In this case, the control unit 47 of the emergency telephone base unit 4 transmits a disconnection notification signal to the disaster prevention display device 3, similarly to the case of SC9.

[0119] 7, the normal telephone handset 531 electrically disconnects the slave telephone 521 from the telephone line L2, and also transmits a master disconnection signal to the emergency telephone master unit 4. Meanwhile, the emergency telephone master unit 4, which has received the disconnection signal, electrically disconnects the master telephone 421 from the telephone line L2 by turning off its own master switch circuit 422, and also transmits a disconnection notification signal to the disaster prevention display device 3.

[0120] On the other hand, at SB7 in FIG. 11, the control unit 35 of the disaster prevention display device 3 receives the disconnection notification signal transmitted at SC9 or SD6.

[0121] In SB8 of FIG. 11, the control unit 35 of the disaster prevention display device 3 changes the display mode of the handset symbol image in the handset selection image. Specifically, it is arbitrary, but for example, the above-mentioned "normal state" is specified, and the handset symbol image selected in SB2 in the handset selection image is displayed in "cyan color" as a display mode corresponding to the "normal state". Here, for example, the "normal state" is specified, and the handset symbol image G531 selected in SB2 in the handset selection image is displayed in "cyan color". That is, in this case, all of the handset symbol images G531 to G533 are displayed in "cyan color". With this, the call processing is ended.

[0122] (Effects of the embodiment) Thus, according to this embodiment, by displaying a handset symbol image (symbol information) corresponding to the emergency telephone handset 5, the installation location of the emergency telephone handset can be grasped without having to check the installation location of the emergency telephone handset using, for example, a paper map, making it possible to easily establish a call between the emergency telephone base unit 4 and the emergency telephone handset 5.

[0123] In addition, by having the disaster prevention display device 3 (display device) perform processing to establish a call between the emergency telephone handset 5 corresponding to the handset symbol image selected by a specified operation and the emergency telephone base unit 4, the call can be established without the user having to input information indicating the building, floor, area, and number to the emergency telephone base unit 4 as information indicating the installation location of the emergency telephone handset 5 to be the target of the call, making it possible to easily establish a call between the emergency telephone base unit 4 and the emergency telephone handset 5.

[0124] Furthermore, by displaying the handset symbol image in a display mode corresponding to the state of the call, for example, it becomes possible to recognize the state of the call by visually checking the handset symbol image.

[0125] [Modifications to the embodiment] Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions described in the claims. Such modifications will be described below.

[0126] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and may vary depending on the implementation environment of the invention and the details of the configuration, and may solve only some of the problems described above or achieve only some of the effects described above.

[0127] (Regarding decentralization and integration) In addition, the above-mentioned configuration is a functional concept, and does not necessarily have to be physically configured as shown in the drawings. In other words, the specific form of distribution or integration of each part is not limited to that shown in the drawings, and all or part of it can be functionally or physically distributed or integrated in any unit.

[0128] (Selection of handset symbol image) In the above embodiment, the case where a slave unit symbol image is selected on the slave unit selection screen in Fig. 12 has been described, but the present invention is not limited to this. For example, a slave unit symbol image may be configured to be selected on the fire location display screen in Fig. 9. That is, when a slave unit symbol image displayed on the fire location display screen in Fig. 9 is selected by clicking via the operation unit 33, it may be configured to determine that a call preparation is to be instructed in SB2 in Fig. 10 (YES in SB2).

[0129] (Other features) In addition to the above embodiment, the handset symbol image corresponding to the emergency telephone handset related to the fire alert may be displayed in a manner that is distinguishable from other handset symbol images on the fire location display screen of Figure 9 and the handset selection screen of Figure 12. For example, the emergency telephone handset related to the fire alert may be specified based on the sensor that issued the fire alert by setting the association relationship between the sensor and the emergency telephone handset in advance. Alternatively, the emergency telephone handset corresponding to the emergency telephone handset symbol within a predetermined range from the fire symbol image 501 on the fire location display screen may be specified as the emergency telephone handset related to the fire alert without setting the association relationship between the sensor and the emergency telephone handset in advance. For example, the handset symbol image corresponding to the emergency telephone handset related to the fire alert may be made to blink. In this way, it is possible to provide assistance to the user of the disaster prevention display device 3 in making a call to an emergency telephone handset in the vicinity of the detector that has issued a fire alert.

[0130] In addition, the display form of the handset symbol image may be changed based on the record of establishing a call between the emergency telephone handset and the emergency telephone base unit from the time the fire alert was issued until the fire was restored based on the fire alert. For example, a handset symbol image corresponding to an emergency handset that established a call with an emergency handset base unit and then ended the call may be displayed in a manner that makes it possible to distinguish it from other emergency handset symbols by, for example, superimposing a circle image. Also, a handset symbol image corresponding to an emergency handset that was called from the emergency handset base unit but with which a call was not established may be displayed in a manner that makes it possible to distinguish it from other emergency handset symbols by, for example, superimposing an x ​​image. In this way, it is possible to assist the user of the disaster prevention display device 3 in selecting an emergency telephone handset when he or she wishes to make another call after terminating a call with the emergency telephone handset, and to assist in avoiding calling duplicate emergency telephone handsets when making sequential calls to the emergency telephone handsets until a call is established.

[0131] (Emergency phone handset) In the above embodiment, a case has been described in which a call is made from the emergency telephone base unit 4, but a configuration may also be adopted in which a call is made from the emergency telephone handset 5 to the emergency telephone base unit 4. In such a configuration, the disaster prevention display device 3 may be configured to identify the floor on which the emergency telephone handset 5 that made the call is installed, and to display a handset symbol image in a position corresponding to the installation position of the emergency telephone handset 5 installed on the floor on which the emergency telephone handset 5 that made the call is installed, on a map image corresponding to the identified floor. In this case, the handset symbol image corresponding to the emergency telephone handset 5 that made the call may be made to flash to make it stand out.

[0132] (others) Various other functions may be realized. For example, the call-in, call-out, and disconnection may be recorded in the history, and redialing may be performed by selecting the history. Also, for example, a plurality of disaster prevention display devices may be connected to a network, all of which may be equipped with a handset, and the call voice may be transferred between the disaster prevention display devices, so that the operation of incoming calls, outgoing calls, and disconnection may be performed in the same way on all of the disaster prevention display devices. Also, for example, the disaster prevention display device may be configured to display a symbol of a detector or the like, and when the symbol is clicked, the nearby emergency telephone handset may be highlighted (e.g., blinking). Also, for example, the disaster prevention display device and the handset of the emergency telephone base unit may be configured as one unit. It may also be configured as one unit with the emergency telephone base unit itself. Also, when the disaster prevention display device and the emergency telephone base unit are installed in separate locations such as separate buildings, the communication line may be extended and the handset may be installed near the disaster prevention display device.

[0133] (Features) Furthermore, the features of the above-described embodiments and the features of the modifications may be combined in any manner.

[0134] (Additional Note) The disaster prevention system of Appendix 1 comprises an emergency telephone base unit, an emergency telephone handset located in a monitored area and capable of communicating with the emergency telephone base unit, and a display device that displays at least information indicating the location of a fire that has occurred in the event of a fire on a map showing the monitored area, and the display device displays symbol information corresponding to the emergency telephone handset at a position on the map that corresponds to the position in the monitored area where the emergency telephone handset is located.

[0135] The disaster prevention system of Appendix 2 is the disaster prevention system described in Appendix 1, in which the display device performs a predetermined operation for establishing a call between the emergency telephone base unit and the emergency telephone handset, and when the predetermined operation is performed to select the symbol information corresponding to the emergency telephone handset that is to be the target of establishing a call with the emergency telephone base unit, the display device performs processing for establishing a call between the emergency telephone handset that corresponds to the symbol information selected by the predetermined operation and the emergency telephone base unit.

[0136] The disaster prevention system of Appendix 3 is a disaster prevention system described in Appendix 1 or 2, in which the display device identifies a state regarding a call between the emergency telephone base unit and the emergency telephone handset, and displays the symbol information in a display mode corresponding to the identified state.

[0137] (Effect of supplementary notes) According to the disaster prevention system described in Appendix 1, by displaying symbol information corresponding to the emergency telephone handset, it is possible to grasp the installation location of the emergency telephone handset without having to check the installation location of the emergency telephone handset using, for example, a paper map, making it possible to easily establish a call between the emergency telephone parent unit and the emergency telephone handset.

[0138] According to the disaster prevention system described in Appendix 2, the display device performs processing to establish a call between the emergency telephone handset corresponding to the symbol information selected by a specified operation and the emergency telephone base unit, so that the call can be established without the user having to input information indicating the building, floor, district, and number to the emergency telephone base unit as information indicating the installation location of the emergency telephone handset to be the target of the call, making it possible to easily establish a call between the emergency telephone base unit and the emergency telephone handset.

[0139] According to the disaster prevention system described in Supplementary Note 3, by displaying the symbol information in a display mode corresponding to the state of the call, for example, it becomes possible to recognize the state of the call by visually recognizing the symbol information. [Explanation of symbols]

[0140] 1 sensor 2. Disaster prevention receiver 3 Disaster prevention display device 4 Emergency telephone base station 5 Emergency phone handset 31 Communications Department 32 Display section 33 Operation section 34 Recording Section 35 Control section 41 Communications Department 42 Parent Telephone Department 43 Display section 44 Control section 45 Sound department 46 Recording Section 47 Control Unit 51 Communications Department 52 Subsidiary Telephone Department 53 Display section 54 Sound Department 55 Recording Department 56 Control section 100 Disaster Prevention System 131 Sensor 132 Sensor 421 Parent telephone 422 Parent switch circuit 423 Parent Hook Switch 521 Child telephone 522 Child side switch circuit 523 Child Hook Switch 531 Emergency phone handset 532 Emergency phone handset 533 Emergency phone handset G531 handset symbol image G532 handset symbol image G533 handset symbol image G500 map image G501 Fire Symbol Image L1 Telephone transmission line L2 Telephone Line L3 Sensor side transmission line

Claims

1. Emergency telephone base station, an emergency telephone handset arranged in a monitoring area, the emergency telephone handset being capable of communicating with the emergency telephone base unit; a display device that displays, when a fire occurs, information indicating the location of the fire on a map indicating the monitoring area; Equipped with the display device displays symbol information corresponding to the emergency telephone handset at a position on the map corresponding to a position in the monitoring area where the emergency telephone handset is located; The display device includes: a predetermined operation for establishing a call between the emergency telephone base unit and the emergency telephone handset, in which, when a predetermined operation for selecting the symbol information corresponding to the emergency telephone handset that is to be the target of establishing a call with the emergency telephone base unit is performed, a process for establishing a call between the emergency telephone base unit and the emergency telephone handset that corresponds to the symbol information selected by the predetermined operation is performed; Disaster prevention system.

2. The display device includes: a state related to a call between the emergency telephone base unit and the emergency telephone handset is identified, and the symbol information is displayed in a display mode corresponding to the identified state. The disaster prevention system according to claim 1 .

3. Emergency telephone base station, an emergency telephone handset arranged in a monitoring area, the emergency telephone handset being capable of communicating with the emergency telephone base unit; an operation display unit that displays, on a map, information indicating the location of a fire that has occurred in the event of a fire, and symbol information corresponding to the emergency telephone handset at a position in the monitoring area where the emergency telephone handset is located; A disaster prevention system comprising: With respect to the operation display unit, A predetermined operation for establishing a call between the emergency telephone base unit and the emergency telephone handset, When the predetermined operation is performed to select the symbol information corresponding to the emergency telephone handset that is to be connected to the emergency telephone base unit, establishing a call between the emergency telephone handset corresponding to the symbol information selected by the predetermined operation and the emergency telephone base unit; Disaster prevention system.

Images