JP4247540B2 - Disaster prevention network system - Google Patents

Description

  By performing wireless LAN connection communication when a disaster occurs, the present invention reconstructs information using only a server in a communicable state, and provides appropriate disaster prevention information to a user's mobile terminal in the vicinity. It relates to the target disaster prevention network system.

  2. Description of the Related Art Conventionally, network systems have been proposed for the purpose of providing disaster prevention information such as damage status and evacuation routes during disaster prevention. As this network system, as shown in Patent Documents 1 and 2, for example, a system that provides information and mail distribution by a WWW (World Wide Web) server using a public network such as the Internet is known. .

  In addition, as shown in Patent Document 3, by providing necessary information only to relevant points such as homes and workplaces registered in advance when a disaster occurs, a large number of accesses to the disaster prevention center or disaster prevention area There is a known system that avoids the problem of concentration of lines and overflow of lines.

  Among the above technologies, systems using the Internet and public networks are superior to conventional systems using disaster prevention broadcasts in terms of information transmission efficiency and information transmission range. There is a problem that information transmission and access itself are likely to be impossible due to the occurrence of a failure or a power failure.

In addition, in a system that transmits disaster information necessary only for relevant points such as homes and workplaces, information on disaster prevention judgment points such as homes and workplaces and notification destinations of disaster prevention information at the time of disaster should be registered in advance. It is not necessary to envisage a situation where you are involved in a disaster at a place away from work or home, such as when you are commuting or shopping, and consider providing appropriate information to users in such situations. There is a problem that it is not done.
JP2003-8528 Japanese Patent Laid-Open No. 11-110454 JP 2002-26013 A

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a disaster prevention network system capable of providing appropriate disaster information to a user when a disaster occurs.

  In order to achieve the above object, the present invention uses the following means.

  A disaster prevention network system according to one aspect of the present invention is a disaster prevention network system using a plurality of servers installed at a disaster occurrence point and a terminal that is carried by a user and can be connected to the server via the Internet or a wireless LAN. The server includes, in normal times, server-side normal information management means for transmitting the normal information to the terminal in response to a request for normal information from the terminal from the terminal, and in the event of a disaster, the terminal and the radio A server-side wireless LAN connection means for connecting via a LAN; and a server-side disaster information management means for transmitting the disaster information to the terminal in response to a request for disaster information by the wireless LAN from the terminal when a disaster occurs. The terminal requests the normal information from the display device and the server to the server via the Internet. A terminal-side normal information management means for transmitting and receiving the normal information from the server via the Internet and displaying it on the display device; and a terminal for switching the connection from the Internet to the wireless LAN when a disaster occurs Side switching means, terminal side wireless LAN connection means for connecting to the server via the wireless LAN when a disaster occurs, and sending a request for the disaster information to the server via the wireless LAN when a disaster occurs, the server The disaster information from the terminal is received by the wireless LAN and displayed on the display device.

  The said disaster prevention network system WHEREIN: The said server may further comprise the imaging device which images the image of a disaster occurrence point.

  In the disaster prevention network system, the server may further include server-side switching means that detects the occurrence of a disaster based on the image of the disaster occurrence point and switches from the Internet connection to the wireless LAN connection.

  In the disaster prevention network system, the server may transmit / receive the disaster information to / from another server.

  In the disaster prevention network system, the terminal may further include position detection means for detecting terminal position information.

  In this case, the terminal-side disaster prevention information management means can also transmit the terminal location information to the server when the disaster information is requested. Moreover, the said terminal side disaster prevention information management means can also select the server which can communicate from the said server based on the said terminal position information. The server-side disaster prevention information management means can also transmit disaster information corresponding to the terminal location information to the terminal.

  ADVANTAGE OF THE INVENTION According to this invention, the disaster prevention network system which can provide a user with appropriate disaster information at the time of disaster occurrence can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

A. Constitution
FIG. 1 shows a configuration diagram of a disaster prevention network system according to an embodiment of the present invention. As shown in FIG. 1, the disaster prevention network system includes a server 10 and a terminal 20 carried by the user. The server 10 and the terminal 20 are connected by the Internet 30 and are also connected by the wireless LAN 40.

  The server 10 includes a normal information management unit 11, an Internet communication control unit 12, a disaster prevention information management unit 13, a wireless LAN connection unit 14, a disaster occurrence detection unit 15, a switching unit 16, and a photographing device 17. ing. This server 10 is installed at a disaster occurrence point such as a street corner, in a car, or at a workplace. Each of the normal information management unit 11 and the disaster prevention information management unit 13 includes a storage device. In these storage devices, normal information A and disaster prevention information B are stored as necessary.

  The terminal 20 includes a normal information management unit 21, an Internet communication control unit 22, a disaster prevention information management unit 23, a wireless LAN connection unit 24, a disaster occurrence detection unit 25, a switching unit 26, a position detection unit 28, And a display device 29. The normal information management unit 21, the disaster prevention information management unit 23, and the position detection unit 28 each include a storage device. In these storage devices, normal information A, disaster prevention information B, and position information C are stored as necessary.

B. function
The above configuration has the following functions.
The normal information management means 11 and 21 control processing of various data transmitted and received through the Internet 30 and correspond to a WWW server, a WWW browser, and the like. These normal information management means 11 and 21 store normal information A such as daily life information. The normal information A may be acquired from, for example, another server 10 or the terminal 20 or may be generated by the server 10 or the terminal 20.

  The Internet communication control means 12 and 22 transmit / receive various data between the server 10 and the terminal 20 via the Internet 30 and perform communication control processing including actual hardware.

  The disaster prevention information management means 13, 23 controls processing of various data transmitted / received via the wireless LAN 40 when a disaster occurs, and stores disaster information B. The disaster information B may be acquired from a server or a terminal such as a fire department / police / disaster prevention center, or may be generated by the disaster prevention information management means 13, 23. The disaster prevention information management means 13 on the server 10 side can acquire information of the server 10 that can communicate in the vicinity and the terminal 20 that exists in the communicable range. That is, a means for detecting the presence of peripheral terminals, servers, and the like via the wireless LAN 40 is provided. Further, the disaster prevention information management means 13 stores the terminal position information C acquired from the terminal 20. Moreover, the disaster prevention information management means 23 on the terminal 20 side can obtain information about the server 10 that can communicate in the vicinity. That is, a means for detecting the presence of the peripheral server 10 via the wireless LAN 40 is provided. Further, the disaster prevention information management means 23 stores the terminal position information C acquired by the position detection means 28.

  The wireless LAN connection means 14 and 24 transmit and receive various data between the server 10 and the terminal 20 through the wireless LAN 40, and perform communication control processing including actual hardware. Thereby, communication between wireless LAN access points is realized. The wireless LAN connection unit 14 of the server 10 can transmit / receive various data to / from other servers 10 via the wireless LAN 40.

  The disaster occurrence detection means 15 and 25 analyze the image data of the disaster occurrence point landscape acquired by the photographing device 17 and detect the occurrence of the disaster. This detection of the occurrence of a disaster is realized with normal image processing technology, for example, for a fire occurrence, by setting a threshold value of image data representing the color of the flame and determining that a fire has occurred when this threshold value is exceeded Is possible. Further, the occurrence of a disaster may be detected by receiving disaster information B from another server 10.

  The disaster occurrence detection means 25 on the terminal 20 side need not have the same function as the disaster occurrence detection means 15 on the server 10 side. That is, the disaster occurrence detection means 15 on the server 10 side analyzes the image data of the scenery of the disaster occurrence point and detects the disaster occurrence, but the disaster occurrence detection means 25 of the terminal 20 performs this analysis and detection. It is only necessary to detect the occurrence of a disaster by simply receiving the disaster information B from the server 10 without performing it. Of course, similarly to the disaster occurrence detection means 15 on the server 10 side, the disaster occurrence detection means 25 on the terminal 20 side may also perform processing such as image data analysis and detection of disaster occurrence. Furthermore, the terminal 20 may not include the disaster occurrence detection unit 25.

  When the switching means 16, 26 detects that a disaster has occurred by the disaster detection means 15, 25, the switching means 16, 26 switches the connection method between the Internet 30 and the wireless LAN 40. That is, the switching means 16 and 26 set the Internet communication control means 12 and 22 to be valid at normal times. And the switching means 16 and 26 stops the function of the internet communication control means 12 and 22 by detecting the occurrence of a disaster, and sets the wireless LAN connection means 14 and 24 to be effective. When the terminal 20 does not include the disaster occurrence detection unit 25, the switching unit 26 may automatically switch between Internet connection and wireless LAN connection. That is, for example, when the Internet communication control unit 22 determines that the Internet connection is not possible, the switching unit 26 automatically switches from the Internet connection to the wireless LAN connection. Alternatively, the user may input a switching instruction using an input device (not shown) provided in the terminal 20.

  The imaging device 17 includes, for example, a camera, a video, and the like, and takes an image of a disaster occurrence point.

  The position detecting unit 28 acquires and stores the terminal position information C of the terminal 20. As a method for acquiring the terminal position information C, GPS (Global Positioning Systems), a method of identifying by communication with the nearby server 10, or the like is used. In addition, based on the terminal position information C, the disaster prevention information management means 13 and 23 can mutually select nearby communicable partners between the server 10 and the terminal 20. The server 10 may be provided with similar position detection means to acquire server position information. Of course, since the server 10 is fixed, if the server location information is stored in advance by the disaster prevention information management unit 13 or the like, it is not necessary to take a method of detecting the server location information again by the location detection unit. As described above, it is possible to acquire any position information of the terminal 20 and the server 10. When the server location information of the server 10 is also obtained, the disaster prevention information management unit 23 may select a communicable partner using not only the terminal location information C but also the server location information.

  The display device 29 is composed of, for example, a liquid crystal display or the like, and includes normal information A stored in the normal information management unit 21, disaster information B stored in the disaster prevention information management unit 23, and terminal location information stored in the position detection unit 28. C etc. are displayed.

C. Action
(1) Normal communication method
In a normal time when no disaster occurs, normal information A is provided on the WWW (World Wide Web), for example, between the server 10 and the terminal 20 via the Internet 30 as shown in FIG. Specifically, the exchange of the normal information A is performed as follows.

  First, when the user wants to obtain the normal information A, the normal information A is requested from the Internet communication control means 22 of the terminal 20 to the Internet communication control means 12 of the server 10 via the Internet 30.

  In the server 10, the request for the normal information A is recognized by the normal information management unit 11 of the server 10 through the normal information management unit 11 from the Internet communication control unit 12. The normal information management means 11 selects the normal information A corresponding to this request from the normal information A stored in advance. The selected normal information A is transmitted from the normal information management means 11 to the terminal 20 from the server 10 via the Internet communication control means 12 and the Internet 30.

  The normal information A received by the terminal 20 is temporarily stored in the normal information management means 21 from the Internet communication control means 22 via the normal information management means 21. The normal information management means 21 causes the display device 29 to display the acquired normal information A.

(2) Disaster detection method
When a disaster occurs, the server 10 and the terminal 20 detect the occurrence of the disaster as follows.

  In the server 10, the disaster occurrence detection unit 15 detects the occurrence of the disaster by analyzing the video and audio around the server acquired from the imaging device 17. Further, the disaster prevention information management means 13 generates disaster information B when the occurrence of a disaster is detected by the disaster occurrence detection means 15. On the other hand, in the terminal 20, the disaster occurrence detection means 25 detects based on the disaster information B received from the server 10 through the Internet 30.

  The server 10 can detect a disaster other than when the server 10 itself detects a disaster as described above. For example, it is possible to detect the occurrence of a disaster from another server 10 other than the server 10. In this case, the server 10 receives the disaster information B from the other server 10 via the Internet 30 or the wireless LAN 40. The occurrence of a disaster is detected by the disaster occurrence detection means 15. Further, when the terminal 20 detects the occurrence of a disaster, the disaster information B is requested to the server 10 via the Internet 30 or the wireless LAN 40, and the disaster occurrence detection means 25 detects the occurrence of the disaster based on the received disaster information B. .

(3) Communication method in the event of a disaster
When a disaster occurs, it is assumed that the network line is disconnected or the server 10 is broken. For this reason, when the occurrence of a disaster is detected, normal Internet communication is switched to wireless LAN connection communication. Then, as shown in FIG. 3, the disaster information B is exchanged between the server 10 and the terminal 20 via the wireless LAN 40. Specifically, the exchange of the disaster information B is performed as follows.

  First, in the server 10 and the terminal 20, when a disaster occurrence is detected by the disaster occurrence detection means 15 and 25, the switching means 16 and 26 are switched to wireless LAN connection communication. If the terminal 20 is not provided with the disaster occurrence detection means 25, the switching means 26 automatically switches the connection when the Internet communication control means 22 determines that the Internet connection with the server 10 is not possible. When automatic connection switching is not necessarily performed, connection switching may be performed based on an input by a user using an input device.

  Next, a request for disaster information B is issued from the terminal 20 to the server 10 via the wireless LAN 40. At this time, the terminal position information C acquired by the position detection means 28 is also transmitted.

  In the server 10, the disaster information B request and the terminal location information C are recognized by the disaster prevention information management means 13 via the wireless LAN connection means 14. The disaster prevention information management means 13 detects the current position of the user from the terminal position information C, and selects disaster information B around the current position from the disaster information B in the disaster prevention information management means 13. The disaster prevention information management means 13 transmits the selected disaster information B from the server 10 to the terminal 20 via the wireless LAN connection means 14 and the wireless LAN 40.

  The disaster information B received by the terminal 20 is temporarily stored in the disaster prevention information management means 23 via the wireless LAN connection means 24. The disaster prevention information management means 23 causes the display device 29 to display the acquired disaster information B.

  The disaster information B provided to the user's terminal 20 in the event of a disaster includes the “disaster status” in the surrounding area of the user, “disaster prevention information / alarm” obtained from the fire department / police / disaster prevention center, etc. Information on “evacuation route / evacuation place” according to the position is assumed.

  Here, the information on the “disaster situation” is information obtained by using a video / image of the disaster situation and congestion situation around the user, and can be effectively used when the user determines an evacuation route or the like.

  Information related to “disaster prevention information / alarm” can be obtained by the terminal 20 via the Internet or the like, but is effective when it cannot be obtained from all the servers 10 via the Internet due to disconnection of the network or the like.

  Information relating to “evacuation route / evacuation place” varies depending on the user's movement of the terminal 20, but information corresponding to the user's position is provided by using the terminal position information C. be able to. That is, the disaster prevention information management unit 23 of the terminal 20 transmits the terminal location information C to the server 10 via the wireless LAN connection unit 24 and the wireless LAN 40. Based on the received terminal location information C, the disaster prevention information management means 13 of the server 10 determines the evacuation route and evacuation location corresponding to the location of the terminal based on the route information candidates and evacuation location candidates registered in advance. calculate. The obtained evacuation route and evacuation place are transmitted to the terminal 20 and displayed on the display device 29 by the disaster prevention information management means 23.

  In providing such disaster information B, the disaster information B is shared between the servers 10. That is, a certain server 10a transmits disaster information B1 to the other server 10b via the wireless LAN 40. The server 10b transmits disaster information B2 to the server 10a via the wireless LAN 40. Of course, other servers such as the servers 10c, 10d,. As a result, the disaster information B can be shared.

  For this reason, even when the server 10 that can be communicated changes as the user of the terminal 20 moves, the server 10 closest to the current position of the user can provide information according to the current position of the user. Not only can the server 10 capable of communication be switched without making the user aware of it. In addition, even if a server 10 cannot obtain the disaster information B due to a failure or the like when a disaster occurs, if there is a server 10 that can obtain the disaster information B, share the disaster information B of this server 10 Can do.

D. effect
In the disaster prevention network system of this embodiment, the communication means between the server 10 and the terminal 20 or between the servers 10 can be changed according to the situation. Therefore, when a disaster occurs, it is possible to switch from Internet communication to wireless LAN connection communication. For this reason, even when the network disconnection or the server 10 on the Internet route breaks down at the time of disaster, necessary disaster information such as evacuation route guidance via the wireless LAN 40 to the user terminal 20 existing in the communicable range B can be provided.

  Moreover, in the disaster prevention network system of this embodiment, even if the user who carries the terminal 20 moves, it is possible to provide the disaster information B according to this changing terminal position information C. That is, since the terminal 20 carried by the user is provided with the position detecting means 28 for detecting the terminal position information C, the server 10 is based on the terminal position information C even when the user moves. The disaster information B corresponding to the current position of the user can be provided.

  Moreover, in the disaster prevention network system of this embodiment, information can be shared between the servers 10. Therefore, even when the server 10 that can communicate with the terminal 20 is switched due to the movement of the user at the time of evacuation, it is possible to provide information according to the user's action by sharing information between the nearby servers 10. is there. Even if a certain server 10 fails and disaster information B cannot be acquired, it is possible to acquire information from nearby servers 10 by sharing the information. Disaster information B can be collected with a minimum of.

  As described above, according to the disaster prevention network system of the present embodiment, it is possible to efficiently provide information to individual users in the event of a disaster while making up for the shortcomings of an information network that is vulnerable to disconnection and access concentration during a disaster. Is possible.

  The present invention is not limited to the above embodiment. Although the normal information management means 11, the disaster prevention information management means 13, the normal information management means 21, the disaster prevention information management means 23, and the position detection means 28 are provided with storage devices, these means need to be provided with separate storage devices. There is no need to provide a storage device for each server or each terminal.

  Moreover, although the switching means 16 and 26 showed the example which switches an internet connection and a wireless LAN connection at the time of a disaster and a non-disaster, it is not limited to this. There is no need to forcibly disconnect the Internet connection due to the occurrence of a disaster, and both the Internet connection and the wireless LAN connection may be continued as long as possible. In addition, a wireless LAN connection may be appropriately used during normal times.

  Further, the configurations of the server 10 and the terminal 20 shown in FIG. 1 are merely examples, and various changes can be made according to the usage form. For example, it is possible to replace the Internet and the wireless LAN with different networks.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention when it is practiced. Furthermore, the above-described embodiment includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and is described in the column of the effect of the invention. When an effect is obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.

  As described above, the present invention is effective in the technical field of a disaster prevention network system for the purpose of providing appropriate disaster prevention information to a user portable terminal in the vicinity.

The block diagram which shows the disaster prevention network system which concerns on one Embodiment of this invention. The figure which shows the disaster prevention network system at the normal time which concerns on one Embodiment of this invention. The figure which shows the disaster prevention network system at the time of the disaster occurrence which concerns on one Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Server, 11, 21 ... Normal information management means, 12, 22 ... Internet communication control means, 13, 23 ... Disaster prevention information management means, 14, 24 ... Wireless LAN connection means, 15, 25 ... Disaster occurrence detection means, 16 , 26 ... switching means, 17 ... photographing means, 20 ... terminal, 28 ... position detecting means, 29 ... display device, 30 ... Internet, 40 ... wireless LAN.

Claims (7)

Multiple servers installed at the disaster occurrence point,
A disaster prevention network system using a terminal that is carried by a user and can be connected to the server via the Internet or a wireless LAN,
The server
Server-side normal information managing means for transmitting the normal information to the terminal in response to a request for normal information by the Internet from the terminal ;
Server-side wireless LAN connection means for connecting to the terminal via the wireless LAN;
Server-side switching means for switching from connection via the Internet to connection via the wireless LAN when occurrence of a disaster is detected;
A server side disaster prevention information management means for transmitting the disaster information to the terminal in response to a request for disaster information by the wireless LAN from the terminal ;
The terminal
A display device;
Wherein sending a request for the normal information by the Internet server, the terminal-side normal information management means for displaying the normal information from the server to the display device and received by the Internet,
When the terminal-side normal information management means cannot connect to the server via the Internet, terminal-side switching means for switching the connection with the server from the Internet to the wireless LAN;
A terminal side wireless LAN connection means for connecting with the server and the wireless LAN, and
Be equipped with said sending the request for the disaster information by a wireless LAN, the terminal-side disaster information management means for displaying the disaster information from the server to the display device and received by the wireless LAN to the server Disaster prevention network system characterized by The disaster prevention network system according to claim 1, wherein the server further includes a photographing device that captures an image of a disaster occurrence point. Disaster network system according to claim 1 wherein the server-side switching means, characterized in that the switch detects the occurrence of a disaster based on the image of the disaster point from the connection by the Internet connection by the wireless LAN.   The disaster prevention network system according to claim 1, wherein the server-side wireless LAN connection unit transmits and receives the disaster information to and from other servers. The disaster prevention network system according to claim 1, wherein the terminal further includes a position detecting unit that detects terminal position information.   The disaster prevention network system according to claim 5, wherein the terminal-side disaster prevention information management means transmits the terminal location information to the server when the disaster information is requested.   The disaster prevention network system according to claim 6, wherein the server side disaster prevention information management means transmits disaster information corresponding to the terminal position information to the terminal.

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