JP7274719B2 - disaster notification system - Google Patents

Description

The present invention relates to a disaster notification system and a terminal device.

During a disaster, there are various systems for exchanging information about the disaster. The prior art described in the following patent documents discriminates message information corresponding to preset conditions and message information related to disasters when the occurrence of a disaster is detected, and changes the display mode of the discriminated message information. change and sort by tabs, for example. Also, in some cases, disaster-related messages are exchanged using general network services such as electronic bulletin boards and SNSs (Social Networking Services), instead of communication services specialized for disaster communication.

JP 2013-197684 A

When a general network service is used to exchange disaster-related messages, events that the user of the network service was unaware of or that were not discussed are not presented as topics and are overlooked.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a network service that promotes message exchange by presenting specific events in a disaster as the subject of a message without being overlooked.

A disaster notification system according to the present invention for achieving the above object comprises: receiving means for receiving information from an information acquisition device; group management means for managing a group of users associated with the information acquisition device and information contents; message management means for managing messages that can be viewed from the information acquisition device; means, and notification means for notifying users of a group associated with specific information corresponding to a thread set by the thread setting means that a thread has been set.
More preferably, the thread setting means adds position information specified based on the information acquisition device and the content of the information to the set thread.
More preferably, the disaster notification system of the present invention further comprises site management means for managing sites on the network in association with the information acquisition device and information content, and the thread setting means assigns a thread to the thread set by the thread setting means. , characterized by setting a link to the site associated with the specific information to which this thread corresponds.
More preferably, the thread setting means acquires predetermined information from the linked site and adds it to the set thread.
Another aspect of the present invention for achieving the above object is a display means for displaying messages exchanged with an external device, and a thread for collectively displaying the messages, wherein specific information related to a disaster is displayed. A thread information acquiring means for acquiring thread information to which position information that is automatically set in association and specified based on the specific information is added; and based on the thread information acquired from the thread information acquiring means. and display control means for causing a display means to display a thread and position information, and for displaying a message exchanged in association with the thread on the thread.

The present invention mechanically sets a thread for exchanging messages based on the acquisition of specific information about a disaster, thereby providing a place for exchanging messages regarding specific events in such disasters, Notify associated users. This allows such a specific event to be presented as the subject of a message to encourage message exchange without going unnoticed.

It is a figure showing an example of composition of a disaster information system by this embodiment. It is a figure which shows the function structure of a site provision server. FIG. 4 is a diagram showing a functional configuration of a message posting server; FIG. It is a figure which shows the functional structure of a terminal device. FIG. 4 is a diagram showing a configuration example of a home screen of a message exchange site; FIG. 4 is a diagram showing a configuration example of a message display screen of a message exchange site; FIG. 10 is a diagram showing another example of a message display screen of the message exchange site; FIG. 10 is a flow chart showing the operation of the site providing server when setting threads; FIG. FIG. 10 is a flow chart showing an operation when a message posting server automatically posts a message; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<System configuration>
FIG. 1 is a diagram showing a configuration example of a disaster notification system according to this embodiment. The disaster notification system 10 includes an information acquisition device 100 , a site providing server 200 , a message posting server 300 and a terminal device 400 . Information acquisition device 100 , site providing server 200 and message posting server 300 , and terminal device 400 and site providing server 200 are connected via network 500 .

The network 500 is not particularly limited as long as it is a communication network used for data communication between devices, and may be a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, or the like. The communication line used for data communication may be wired or wireless, and both may be used. Further, a relay device such as a gateway device or a router may be used to connect each device via a plurality of networks or communication lines.

<Configuration of information acquisition device>
The information acquisition device 100 is a device that acquires various types of information regarding the environment and the state of the target object. The information acquisition device 100 acquires information for determining whether or not a predetermined specific event related to a disaster has occurred. Devices such as various sensors, cameras, and microphones are used as the information acquisition device 100, for example. Information acquisition device 100 has a communication function for transmitting acquired information to site providing server 200 and message posting server 300 . Further, the information acquisition device 100 includes storage means such as a non-volatile memory, which will be described later in detail, and holds position information related to an event to be detected by the information acquisition device 100 . Then, the location information is transmitted to the site providing server 200 and the message posting server 300 together with the obtained information. In the configuration example shown in FIG. 1, the information acquisition apparatus 100 is directly connected to the servers 200 and 300 via the network 500, but a relay server such as a so-called edge server is interposed to obtain each information. Information acquired by the device 100 may be collected and transmitted to the site providing server 200 or the message posting server 300 . In this case, position information related to an event to be detected may be held in a relay server, and the relay server may transmit the position information to servers 200 and 300 together with the information obtained by information obtaining apparatus 100 .

A sensor as the information acquisition device 100 is a detection device that detects various information as a physical quantity from an object or environment. Various types of sensors may be used depending on the type of information to be detected. For example, a temperature sensor, a humidity sensor, an illuminance sensor, a speed sensor, a vibration sensor, etc. are used singly or in combination. As a result, various information such as changes in temperature, changes in the amount of water, presence or absence of damage or failure, etc., are acquired with respect to the location or article set as the detection target. A specific configuration of the sensor as the information acquisition device 100 is specified according to the target to acquire information, the type of information to acquire, the type of event to detect, and the like. Information acquired by the sensor is sent to the site providing server 200 and the message posting server 300 as digital data.

A camera as the information acquisition device 100 is an imaging device that acquires an image as information. Images captured by the camera are sent to the site providing server 200 and the message posting server 300 as digital data. The image acquired by the camera may be either a moving image or a still image, and may be set according to the type of information to be acquired or the object to be photographed. When acquiring moving images, in addition to moving image data in a moving image format, a set of time-series still image data shot at regular time intervals may be acquired. Images captured by the camera are sent to the site providing server 200 and the message posting server 300 as digital data. As the camera, cameras having various configurations may be used according to the object to be imaged and the usage environment. For example, it may be a fixed camera or a portable camera (handy camera). Also, a wide-angle camera or a full-circumference camera that acquires an image of a wide surrounding space, or a group of cameras that capture specific objects or locations at various angles, or the like may be used. Furthermore, focusing on the data format of the acquired image, it may be a digital camera that acquires the image as a digital image, or an analog camera that acquires the image as an analog image. In the case of an analog camera, an image captured as an analog image is converted to digital data and output. A specific configuration of the camera as the information acquisition device 100 is specified according to the environment and scene in which moving images are collected, restrictions on usable devices, and the like.

A microphone as the information acquisition device 100 is a device that records sound (acoustic information) as information. Microphones having various characteristics and configurations may be used depending on the location to be recorded, the type of acoustic information, and the like. For example, when recording a human voice or the operation sound of a specific object, a highly directional microphone is used that has a range characteristic that matches the range of the voice or the operation sound. In addition, when recording the voices of people gathered in an area of a certain size and environmental sounds, omnidirectional or low-directivity microphones are used. Acoustic information recorded by the microphone is sent to the site providing server 200 and the message posting server 300 as digital data. Also, the configuration of the microphone itself can take various configurations such as a fixed microphone, a sound collecting microphone, and a microphone array with strong directivity. A specific configuration of the microphone as the information acquisition device 100 is specified according to the environment and scene in which recording is performed, restrictions on usable devices, and the like.

<Configuration of site providing server>
The site providing server 200 is a server that provides a message exchange site for posting messages and exchanging information. A message exchange site is a web site that provides network services for exchanging messages. The site providing server 200 receives posted messages from the terminal device 400 and the message posting server 300, and records them in a document file such as an HTML file. The document file can be displayed on the terminal device 400 as, for example, a web page such as a chat display page or a bulletin board.

FIG. 2 is a diagram showing the functional configuration of the site providing server 200. As shown in FIG. The site providing server 200 includes a site management section 201 and a group management section 202 . The site providing server 200 also includes a transmission/reception unit 203 , an information analysis unit 204 , a location information extraction unit 205 and a thread setting unit 206 . The site providing server 200 also includes a message analysis section 207 , a message management section 208 , an event related information acquisition section 209 and a link setting section 210 . The site providing server 200 also includes a notification unit 211 .

The site management unit 201 manages the message exchange site provided by the site providing server 200 . At the message exchange site, posted messages received from terminal device 400 and message posting server 300 are grouped by thread and presented. The site management unit 201 manages the message presentation page (for example, web page) for each thread.

The group management unit 202 manages groups of terminal devices 400 (users) associated with threads set based on specific setting conditions. Groups are managed by being associated with thread setting conditions in advance and registered, for example, in a management table. The thread setting condition is determined based on the information acquired by the information acquisition device 100 . Details of thread setting conditions and setting procedures will be described later.

The transmission/reception unit 203 is a network interface that connects to the information acquisition device 100, the message posting server 300, and the terminal device 400 via the network 500 and exchanges data.

The information analysis unit 204 analyzes the information received from the information acquisition apparatus 100 by the transmission/reception unit 203, and determines whether or not the thread setting condition is satisfied. A condition for setting the thread is that it is determined that a specific event in the disaster has occurred based on the information acquired by the information acquisition device 100 . Specifically, for example, as a specific event, a sensor (information acquisition device 100) provided to detect that the water level in a specific place such as a river has reached a predetermined dangerous water level detects a dangerous water level. A condition for setting the thread may be that it receives information indicating that the water level has been reached. Also, as a specific event, the thread is set to receive information indicating that the windowpane of the target building has been broken from the sensor (the information acquisition device 100) provided to detect that the windowpane has been broken. can be a condition. Also, as a specific event, the thread receives information indicating that an abnormal sound has been generated from a microphone (information acquisition device 100) provided to detect that an abnormal sound has been generated during operation of the target machine. can be set as a condition for In the above example, the monitoring of the water level of the river and the detection of specific events such as breakage of the window glass of the target building may be performed based on the image acquired by the surveillance camera as the information acquisition device 100 . In this case, image analysis may be performed on the image acquired by the monitoring camera to determine the change in water level and the state of the window glass. When image analysis is performed on an image acquired by a camera, the acquired image may be transmitted to an analysis server, and the analysis result may be transmitted to the site providing server 200 after the image analysis is performed.

To explain further, the thread setting condition is actually determined by the contents of the information received from the predetermined specific information acquisition device 100 . That is, the information analysis unit 204 analyzes the information received from the information acquisition device 100 and identifies what kind of information is received from the predetermined specific information acquisition device 100 . Here, the information acquisition device 100 set as the thread setting condition is not limited to a single device. The event to be detected may indicate a specific pattern or tendency in information obtained from a plurality of information acquisition devices 100 . For example, in the event of an earthquake, vibrations are detected in many buildings within a certain area, but in the case of an explosion, etc., vibrations are detected in a small area near the building where the accident occurred. There may be a specific pattern such that only vibrations are detected. Therefore, the thread setting condition may be that information obtained from a plurality of information acquisition apparatuses 100 show a specific pattern or tendency. The information analysis unit 204 identifies the content of the information received from the information acquisition device 100 in this manner, and determines whether or not the identified content matches the thread setting conditions.

The location information extraction unit 205 analyzes the information received from the information acquisition device 100 by the transmission/reception unit 203, and extracts location information related to thread setting conditions. Here, the position indicated by the position information is a position specified in advance in association with the event to be detected. That is, it is not necessarily limited to the installation position of the information acquisition device 100 that transmitted the information. For example, when the information acquisition device 100 is a camera, it may be appropriate to set the position of the subject being photographed by the camera, rather than the position of the camera itself, which is the information acquisition device 100, as the position related to the event. be. Moreover, when the pattern or tendency of information obtained by a plurality of information acquisition apparatuses 100 is used as a thread setting condition, an event is considered to occur in a certain area where the plurality of information acquisition apparatuses 100 are installed. Therefore, it is considered appropriate to set an area of a certain size including the installation positions of a plurality of information acquisition devices 100 as a position related to the event, rather than the installation position of a specific information acquisition device 100 . In this way, the positional information related to the event is predetermined according to the event to be detected, and is sent from each information acquisition device 100 together with the acquired information. Then, the position information extraction unit 205 extracts this position information from the received information.

When the thread setting condition is satisfied as a result of analysis by the information analysis unit 204, the thread setting unit 206 sets a thread related to the event specified by the setting condition. Information (for example, a title) indicating an event related to the setting condition is added to the set thread. Also, the position information extracted by the position information extraction unit 205 is added to the set thread. Further, identification information of the information acquisition device 100 that transmitted the information used for determining that the event related to the setting condition has occurred may be added to the set thread. The set thread is managed by the site management unit 201 .

Message analysis unit 207 analyzes the posted message received from message posting server 300 or terminal device 400 and extracts specific information. Information to be extracted includes, for example, the thread of the posting destination, the identification information of the posting device and poster added to the message file, the date and time of posting, and the link information described in the message.

The message management unit 208 manages posted messages received from the message posting server 300 and the terminal device 400 for each thread of the posting destination. Also, the message management unit 208 manages the information extracted by the analysis of the message analysis unit 207 in association with the message.

The event-related information acquisition unit 209 acquires information related to the event specified by the setting conditions described above. Event-related information is individually set for each event. For example, if it is an event related to the water level of a river, information released by the disaster prevention center that has jurisdiction over the target area or a public institution that manages the target river, if it is an event related to the window glass of the target building, the management company of the target building, It is the information etc. which a company, a store, etc. announce. The source of this information is set in advance in association with the event. Therefore, when a specific event occurs and a thread related to the event is set based on this, the event-related information acquisition unit 209 issues a connection request to the originator associated with this event, and Get information. Also, when a specific event occurs and a thread related to the event is set based on this, the event-related information acquisition unit 209 notifies the origin of the information of the occurrence of the event, and sends the event to the site providing server 200 from the origin. You may make it transmit information. The source of information may be managed by the group management unit 202 as a user included in a thread group set in relation to the corresponding event. In this case, as will be described later, when a thread is set in accordance with the occurrence of an event, the user of the group associated with the thread is also notified to the originator of the information.

The link setting unit 210 sets, in the thread, a link to a site (related site) related to the event specified by the setting conditions described above. Related sites are preset for each event. The related sites may include sources of information from which the event-related information acquisition unit 209 acquires information, but are not limited to such sources, and various sites having event-related information are related. Configured as a site.

When a specific event occurs and an event-related thread is set based on the event, the notification unit 211 notifies users included in the group associated with the event, which is the thread setting condition, that the event-related thread is set. Notify that it has been set. The notification is not limited as long as it can notify the users of the group of the setting of the thread. For example, the notification may be made by e-mail, or the notification function may be provided as a function of application software for viewing messages managed by the site providing server 200 .

<Configuration of site providing server>
The message posting server 300 is a server that automatically posts messages to the message exchange site provided by the site providing server 200 . The message posting server 300 acquires information from the information acquisition device 100 used to determine the event specified by the setting conditions described above, generates a message based on the acquired information, and sends a message to the event at the message exchange site. Post in a thread about

FIG. 3 is a diagram showing the functional configuration of the message posting server 300. As shown in FIG. Message posting server 300 includes transmitting/receiving section 301 , information accepting section 302 , message generating section 303 , and posting control section 304 .

The transmission/reception unit 301 is a network interface that connects to the information acquisition device 100 and the site providing server 200 via the network 500 and exchanges data. Message posting server 300 receives information from information acquisition device 100 and transmits a posted message to site providing server 200 by transmission/reception unit 203 .

The information reception unit 302 receives information from a specific information acquisition device 100 . Information receiving unit 302 then analyzes the received information and determines whether or not to generate a posted message. The conditions for generating a posted message are that the information received from the information acquisition device 100 is information that is predetermined as information regarding a specific event, and that a thread regarding the event is set. Specifically, for example, when a thread is set based on an event that the water level in a specific location such as a river has reached a predetermined dangerous water level, the water level in that location has further increased to a certain amount. Conversely, the receipt of information indicating that the value has decreased to a certain amount can be used as a generation condition for the posted message. In addition, if a thread is set based on the event that the window glass of the target building was broken, the condition for generating the posting message is that information indicating that another damage or accident has occurred in the target building has been received. can be In addition, various information may be set as information related to an event that serves as a condition for setting a thread, and used as a condition for generating a posted message. A thread related to a specific event is not limited to a thread automatically set by the site providing server 200 . If the thread is set by the user regarding the relevant event, it may be assumed that the condition for generating the posted message is satisfied. The determination as to whether or not the thread is related to the relevant event is made based on, for example, the title of the thread, positional information added to the thread, and the like.

The message generating unit 303 generates a posted message based on the information received from the information acquisition device 100 when the information receiving unit 302 determines that the conditions for generating a posted message are satisfied. For example, when the generation condition that the water level of a river or the like has further increased from the water level of the thread setting condition is satisfied, the message generation unit 303 generates a posted message indicating that the water level has further increased and the danger has increased. Further, when the generation condition that the water level of the river or the like has decreased by a certain amount from the water level of the thread setting condition is satisfied, the message generation unit 303 generates a posted message indicating that the water level has decreased and the degree of risk has decreased. In this way, various types of messages can be generated as posted messages according to the set setting conditions and the content to be notified. The specific content of the message text in the posted message may be determined in advance according to the conditions for generating the posted message determined by the information receiving unit 302 . For example, when the message generation unit 303 satisfies a generation condition for a certain posted message, the message generation unit 303 uses the template text of the corresponding posted message, adds individual information such as date and time, and generates the posted message.

The posting control unit 304 controls the transmitting/receiving unit 301 to transmit the posted message generated by the message generating unit 303 to the site providing server 200 with the thread specified by the conditions for generating the posted message as the posting destination. Identification information indicating that the poster is message posting server 300 is added to the posted message to be sent. Posted messages are managed in the site providing server 200 in association with corresponding threads.

<Configuration of terminal device>
The terminal device 400 is a device that accesses the message exchange site provided by the site providing server 200 to browse and post messages. The terminal device 400 is realized by, for example, a personal computer (PC) connectable to the network 500, a so-called tablet terminal device, a smart phone, or other information terminal device. Users belonging to the groups described above and general users use their own terminal devices 400 to access the message exchange site.

FIG. 4 is a diagram showing the functional configuration of the terminal device 400. As shown in FIG. Terminal device 400 includes control unit 401 , transmission/reception unit 402 , display control unit 403 , display unit 404 , and input reception unit 405 .

The control unit 401 controls the operation of the terminal device 400 as a whole. The control unit 401 includes, for example, a CPU (Central Processing Unit) that is an arithmetic unit, a ROM (Read Only Memory) that stores programs executed by the CPU, and a RAM (Random Access Memory) that is used as a working memory. Configured.

The transmission/reception unit 402 is a network interface that connects to the site providing server 200 via the network 500 and exchanges data. The terminal device 400 accesses the message exchange site of the site providing server 200 through the transmission/reception unit 402 to browse posted messages and post messages to desired threads.

A display control unit 403 controls a screen displayed on the display unit 404 . The display control unit 403 displays the screen of the message exchange site received from the site providing server 200 by the transmission/reception unit 402 on the display unit 404 . The display control unit 403 also generates an operation screen for performing various operations such as message creation and transmission, and displays the operation screen on the display unit 404 .

A display unit 404 displays various screens under the control of the display control unit 403 . The display unit 404 is implemented by, for example, a liquid crystal display.

The input receiving unit 405 receives input operations by the user of the terminal device 400 . The input reception unit 405 includes an operation device for user operation. By operating the operation device, the user performs an operation for displaying the screen of the message exchange site and an input operation on the operation screen displayed on the display unit 404 . A keyboard, a mouse, a touch panel, or the like is used as the operation device, for example.

<Screen configuration example>
Next, screens of the message exchange site provided by the site providing server 200 will be described. The screen of the message exchange site is a Web page generated by the site providing server 200, received by the terminal device 400 from the message exchange site, and displayed on the display unit 404 by application software (browser).

FIG. 5 is a diagram showing a configuration example of the home screen of the message exchange site. A set thread 221 is displayed on the home screen 220 . The thread 221 is set by operating the terminal device 400, and is automatically set by the function of the site providing server 200 (the thread setting unit 206) when the setting conditions are satisfied as described above. A thread 221 automatically set by the site providing server 200 displays a title indicating an event related to the setting condition. For example, a thread 221 set based on an event that the water level of a specific river reaches a dangerous water level displays a title such as "water level of XX river reaches dangerous water level".

Also, in the thread 221 automatically set by the site providing server 200, an icon (hereinafter referred to as a pointer icon) 222 for presenting position information related to the setting condition of the thread 221 extracted by the position information extraction unit 205 is displayed. When the user selects pointer icon 222, location information associated with the setting conditions of thread 221 is presented. Specifically, for example, a map 224 is displayed with a pointer 223 indicating a position related to the setting condition of the thread 221 . In the above example of the water level of a river, the pointer 223 indicates position information indicating the place where the water level is measured.

FIG. 6 is a diagram showing a configuration example of a message display screen of the message exchange site. The message display screen 230 is displayed when the user selects a desired thread 221 on the home screen 220 . FIG. 6 shows the message display screen 230 of the thread 221 when the thread 221 is automatically set by the thread setting unit 206 of the site providing server 200 . As shown in FIG. 6, in the initial state of the message display screen 230, the message display column 231 presents the first message indicating the content of the event related to the setting condition and the position information related to the setting condition of the thread 221. pointer icon 232 is displayed. When the user selects the pointer icon 232 , location information such as a map 224 is presented in the same way as when the pointer icon 222 is selected in the thread 221 .

Also, if there is a camera as the information acquisition device 100 related to the automatically set thread 221, an icon (hereinafter referred to as a camera icon) 233 for presenting an image taken by the camera is displayed in the message display field 231. be done. When the user selects camera icon 233, the image captured by the camera is displayed. Also, if there is a microphone as the information acquisition device 100 related to the automatically set thread 221, an icon (hereinafter referred to as a voice icon) 234 for presenting voice recorded by the microphone is displayed in the message display field 231. be. When the user selects the audio icon 234, the recorded audio is played.

FIG. 7 is a diagram showing another example of the message display screen of the message exchange site. In FIG. 7, the message display screen 230 shows how the message has been automatically posted from the message posting server 300 . In the example shown in FIG. 7, seven messages 231a to 231g are displayed in the message display field 231, and the third posted message 231c and the seventh posted message 231g are automatically posted by the message posting server 300. This is the message that was sent. The message automatically posted by the message posting server 300 is displayed separately from the message posted by the user from the terminal device 400 . In the example shown in FIG. 7, the automatically posted messages 231c and 231g are displayed in bold, and a mark (asterisk "*") indicating that they are automatically posted is displayed.

<Operation when thread is set>
FIG. 8 is a flowchart showing the operation of the site providing server 200 when setting threads. When the site providing server 200 receives the information from the information acquisition device 100, the information analysis unit 204 determines whether or not the thread setting conditions are satisfied (S801, S802). If the thread setting condition is satisfied (Yes in S802), the position information extraction unit 205 extracts position information related to the thread setting condition (S803), and the thread setting unit 206 sets a thread based on the setting condition ( S804). Then, the notification unit 211 identifies the notification destination user based on the group information managed by the group management unit 202 (S805), and sends information indicating that a thread has been generated to the identified notification destination user. Notify (S806). If the information received from the information acquisition device 100 does not satisfy the thread setting condition (No in S802), the thread is not automatically generated.

As described above, according to the present embodiment, when information obtained by the information acquisition device 100 satisfies a thread setting condition, the site providing server 200 automatically sets a thread related to an event related to the setting condition. As a result, it is possible to provide a place for exchanging messages regarding specific events in a disaster without being overlooked. Further, according to this embodiment, when a thread is automatically set, a notification is sent to the users of the group associated with this setting condition. As a result, it is possible to notify the occurrence of the event to all users related to the event that has occurred.

<Behavior when automatically posting messages>
FIG. 9 is a flow chart showing the operation of automatically posting a message by message posting server 300 . When the message posting server 300 receives information from the information acquisition device 100, the information receiving unit 302 determines whether or not conditions for generating a posted message are satisfied (S901, S902). If the generation condition is satisfied (Yes in S902), the message generation unit 303 generates a message based on the information received from the information acquisition device 100 (S903). Then, the posting control unit 304 specifies the corresponding thread and posts the message to the message exchange site of the site providing server 200 (S904). Upon receiving the message posting from message posting server 300 , site providing server 200 posts the message in the designated thread in a display mode unique to the message posted from message posting server 300 (display different from the message posted from terminal device 400 ). ) to display the message. If the information received from the information acquisition device 100 does not satisfy the setting conditions (No in S902), no thread is automatically generated.

As described above, according to the present embodiment, when information obtained by the information acquisition device 100 satisfies a predetermined condition, a posting message for notifying the information is automatically generated and posted to the corresponding thread. be. Accordingly, after a thread is set in relation to a specific event in a disaster, information can be notified to the user at any time according to changes in the situation regarding the event. In addition, by displaying the message automatically posted by the message posting server 300 and the message posted from the terminal device 400 in different display modes, the viewer can easily distinguish between the messages posted by the server.

Although the present embodiment has been described above, the technical scope of the present invention is not limited to the above embodiment. For example, although the site providing server 200 and the message posting server 300 are described as separate servers in the present embodiment, the functions of the message posting server 300 may be implemented as the functions of the site providing server 200 . Also, the site providing server 200 and the message posting server 300 may each be configured as a single server, or may be realized by distributing each function to a plurality of server machines. Also, part or all of the distributed functions may be configured as a so-called cloud system. In addition, the message exchange site provided by the site providing server 200 accepts messages posted by users belonging to a group and general users. You may perform control which permits. In addition, the present invention includes various modifications and alternative configurations that do not depart from the scope of the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 10... Disaster notification system 100... Information acquisition apparatus 200... Site provision server 201... Site management part 202... Group management part 203... Transmission/reception part 204... Information analysis part 205... Location information extraction part 206... Thread setting unit 207 Message analysis unit 208 Message management unit 209 Event-related information acquisition unit 210 Link setting unit 211 Notification unit 300 Message posting server 301 Transmission/reception unit 302 Information reception Unit 303 Message generation unit 304 Post control unit 400 Terminal device 401 Control unit 402 Transmission/reception unit 403 Display control unit 404 Display unit 405 Input reception unit 500 Network

Claims (4)

receiving means for receiving information from the information acquisition device;
group management means for managing a group of users associated with the information acquisition device and the content of the information;
message management means for managing messages viewable from a terminal device;
thread setting means for setting a thread for collectively displaying the messages in association with the specific information acquisition device and the specific information when the specific information about the disaster is acquired from the specific information acquisition device; ,
notification means for notifying that the thread set by the thread setting means has been set to the user of the group associated with the specific information acquisition device and the specific information to which the thread set by the thread setting means corresponds;
A disaster notification system, comprising: 2. The disaster notification according to claim 1, wherein said thread setting means adds position information specified based on said specific information acquisition device and the content of said specific information to said set thread. system. further comprising site management means for managing a site on the network in association with the information acquisition device and the content of the information;
The thread setting means sets, in the thread set by the thread setting means, a link to the specific information acquisition device corresponding to the thread and to the site associated with the specific information. 3. The disaster notification system according to claim 1 or 2, wherein 4. The disaster notification system according to claim 3, wherein said thread setting means acquires information related to a predetermined event from said linked site and adds it to said set thread.

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