JP4479697B2 - Information notification system, information notification method, information device, and program - Google Patents

Description

  The present invention relates to an information notification system, an information notification method, an information device, and a program, and in particular, efficiently notifies information that is commonly required by users of nearby information devices such as evacuation information at the time of a disaster. Regarding technology.

  In the event of a disaster, it is important to promptly notify people in the evacuation target area of evacuation guidance information such as evacuation destinations and evacuation routes together with information related to the disaster. One powerful method is to notify users via mobile devices such as mobile phones and PDAs (Personal Digital Assistants) used by people in the evacuated area (called users) and information devices such as stationary computers. There is a way to do it.

  In the invention of Japanese Patent Laid-Open No. 2003-265632, a predetermined management area is subdivided into radio areas, a relay station is installed for each radio area, each user in the management area is allowed to hold a radio terminal station, and a base station To notify the wireless terminal station of evacuation guidance information corresponding to each wireless area via a wireless relay station. In the invention of Japanese Patent Laid-Open No. 2003-265632, a relay station is arranged under a base station, so that detailed evacuation guidance can be performed for each wireless area.

  In the invention of Japanese Patent Laid-Open No. 9-54895, position information data detected by a mobile terminal by current position detecting means is sent to a host computer via a wireless communication base station, and the host computer sends information corresponding to the position information data from a database. It is disclosed to read and give to a portable terminal.

JP 2003-265632 A JP-A-9-54895

  In the invention of Japanese Patent Laid-Open No. 2003-265632, a wireless area is determined in advance and a wireless relay station is grounded for each wireless area, so that detailed evacuation guidance information can be provided to the user for each wireless area. However, in order to notify users of detailed evacuation guidance information, the management area must be subdivided, and a large number of radio relay stations must be installed corresponding to many subdivided radio areas. There is.

  On the other hand, according to the invention of Japanese Patent Laid-Open No. 9-54895, detailed information on evacuation guidance can be obtained without providing a large number of wireless relay stations by sending the position information data to the host computer. Obtainable. However, even when a large number of mobile terminals are concentrated in a range where short-range communication is possible, the mobile terminals operate in the same manner independently, so the host computer repeats the same process and repeatedly processes the same evacuation guidance information. There is a problem that it takes time to notify the evacuation guidance information to all the mobile terminals. In particular, delays in notification can be fatal when competing for time in seconds, such as a tsunami.

  The purpose of the present invention is to determine a representative between the information device and another information device at a short distance by short-range communication, and the representative information device acquires common information based on the current position from the server, An object of the present invention is to provide an information notification system, an information notification method, an information device, and a program capable of distributing each piece of common information to each information device in a short time by distributing it to other information devices by short-range communication.

The first information notification system of the present invention is an information notification system that notifies the information device of common information that can be commonly used by a plurality of information devices at a short distance,
The information device communicates with other information devices at a short distance in short-range communication to determine a representative, and when it becomes a representative, transmits its current position to the server,
The server creates common information derived from the current position and returns it to the information device,
When the information device receives the common information, the information device transmits the received common information to another information device at a short distance by short-range communication.

The second information notification system of the present invention is an information notification system that notifies the information device of common information that can be commonly used by a plurality of information devices at a short distance,
The information device includes a server communication unit that communicates with the server, a short-range communication unit that performs short-range communication with the information device at a short distance, and a position detection unit that detects a current position,
The server transmits a wide area notification for encouraging acquisition of common information to a plurality of the information devices,
When the information device receives the wide area notification at the server communication unit, the short-range communication unit communicates with another information device at a short distance to determine a representative, and when the information device becomes a representative, the position Create a common information request with the current position detected by the detection unit and send it to the server,
When the server receives the common information request, it creates common information derived from the current location attached to the common information request and returns it to the information device,
When the information device receives the common information, the information device transmits the received common information from the short-range communication unit to the information device at a short distance.

  In the third information notification system of the present invention, when the information device receives the wide area notification by the server communication unit, the short-range communication unit monitors reception of a request suppression signal, and a predetermined time elapses. However, when the request suppression signal is not received, it is determined that the request suppression signal is a representative, and the request suppression signal is transmitted by the short-range communication unit.

  According to a fourth information notification system of the present invention, in the second information notification system of the present invention, when the information device receives the wide area notification by the server communication unit, the information device is in a short distance by the short-range communication unit. The representative is determined by acquiring the identification information from the information and comparing the identification information.

  According to a fifth information system of the present invention, in the information notification system according to any one of the second to fourth aspects of the present invention, the information device is common to the other information devices at a short distance when the information device is not representative. It is characterized by acquiring information.

  According to a sixth information notification system of the present invention, in any one of the second to fifth information notification systems of the present invention, the information device is a mobile portable terminal connected to the server via a base station, The server repeatedly transmits the wide area notification to the information device via a base station at a predetermined interval.

The seventh information notification system of the present invention is the information notification system according to any one of the second to sixth of the present invention, wherein the common information is evacuation guidance information including an evacuation route from the current position to the evacuation destination,
The server includes an information holding unit that holds pre-designated evacuation destination position information and map information of each region, and receives the common information request, based on a current position attached to the common information request An evacuation destination is determined by referring to the information holding unit, and an evacuation route is created on the map from the current position, the evacuation destination and map information, and evacuation guidance information is created.

The first information notification method of the present invention is an information notification method for notifying a common information that can be commonly used by a plurality of information devices at a short distance from a server to the information device,
The information device communicates with other information devices at a short distance in short-range communication to determine a representative, and when it becomes a representative, transmits its current position to the server,
The server creates common information derived from the current position and returns it to the information device,
When the information device receives the common information, the information device transmits the received common information to another information device at a short distance by short-range communication.

A second information notification method of the present invention is an information notification method of notifying a common information that can be commonly used by a plurality of information devices at a short distance from a server to the information device,
The information device includes a server communication unit that communicates with the server, a short-range communication unit that performs short-range communication with the information device at a short distance, and a position detection unit that detects a current position,
The server transmits a wide area notification for encouraging acquisition of common information to a plurality of the information devices,
When the information device receives the wide area notification at the server communication unit, the short-range communication unit communicates with another information device at a short distance to determine a representative, and when the information device becomes a representative, the position Create a common information request with the current position detected by the detection unit and send it to the server,
When the server receives the common information request, it creates common information derived from the current location attached to the common information request and returns it to the information device,
When the information device receives the common information, the information device transmits the received common information from the short-range communication unit to the information device at a short distance.

  According to a third information notification method of the present invention, in the second information notification method of the present invention, when the information device receives the wide area notification by the server communication unit, the near field communication unit monitors reception of a request suppression signal. If the request suppression signal is not received even after a predetermined time elapses, it is determined that the request suppression signal is a representative, and the short-range communication unit transmits the request suppression signal.

  According to a fourth information notification method of the present invention, in the second or third information notification method of the present invention, the information device is a mobile portable terminal connected to the server via a base station. The wide area notification is repeatedly transmitted to the information device through a base station at predetermined intervals.

  The first information device of the present invention communicates with another information device at a short distance in short-range communication to determine a representative, and when it becomes a representative, transmits its current position to the server. When the common information created based on the current position is received, the received common information is transmitted to another information device at a short distance by short-range communication.

The second information device of the present invention has a server communication unit that communicates with the server, a short-range communication unit that communicates with other information devices at a short distance, and a position detection unit that detects the current position,
When the server communication unit receives a wide area notification that prompts acquisition of common information that can be commonly used by a plurality of information devices at a short distance, the short distance communication unit communicates with other information devices at a short distance. The representative is determined, and when it becomes a representative, a common information request with the current position detected by the position detection unit is created and transmitted to the server,
When the common information derived from the current position attached to the common information request from the server is received, the received common information is transmitted from the short-range communication unit to the other information device at a short distance. And

  In the second information device of the present invention, when the server communication unit receives the wide area notification, the third information device of the present invention monitors reception of a request suppression signal by the short-range communication unit, and is determined in advance. If the request suppression signal is not received even after a predetermined time has elapsed, the request determination signal is determined as a representative, and the request suppression signal is transmitted by the short-range communication unit.

  In the second information device of the present invention, when the server communication unit receives the wide area notification in the second information device of the present invention, the fourth information device acquires identification information from the information device at a short distance by the short-range communication unit. The representative is determined by comparing the identification information.

  The fifth information device according to the present invention does not transmit the common information request when any of the second to fourth information devices according to the present invention is not a representative, and the near-field communication unit does not transmit the common information request. The common information request is acquired from an information device located at a distance.

  The first program of the present invention includes a procedure for communicating with another information device at a short distance by short-range communication to determine a representative, and a procedure for transmitting the current position of the user to the server when the representative is represented. When the server receives the common information created based on the current position, the computer is caused to execute a procedure of transmitting the received common information to another information device at a short distance by short-range communication.

When the second program of the present invention receives a wide area notification that prompts acquisition of common information that can be commonly used by a plurality of information devices at a short distance, the information processing device A procedure for communicating with each other to determine a representative,
A procedure for detecting the current position when it is representative and sending it to the server with a common information request;
Causing the computer to execute a procedure of transmitting the received common information to the information device at a short distance by short-range communication upon receiving the common information derived from the current position attached to the common information request from the server. It is characterized by.

  According to a third program of the present invention, in the second program of the present invention, the procedure for determining the representative is determined in advance by monitoring reception of a request suppression signal by short-range communication when receiving the wide area notification from a server. If the request suppression signal is not received even after the predetermined time has elapsed, the request determination signal is determined as a representative and the request suppression signal is transmitted by short-range communication.

  According to a fourth program of the present invention, in the second program of the present invention, when the procedure for determining the representative receives the wide area notification from a server, the identification program acquires identification information from an information device at a short distance by short distance communication. The representative is determined by comparing the information.

  In the present invention, an information device determines a representative with another information device at a short distance by short-range communication, and the representative information device acquires common information based on the current position from the server, Since the information is distributed to other information devices by communication, it is possible to greatly reduce the server processing and notify each information device of the common information in a short time.

  Near field communication as used in the present invention is wireless communication in which the communication range is limited to a short distance. Unlike wide area communication performed by providing a relay station like a telephone communication network, information devices in a short distance relay each other. This is wireless communication performed directly without going through a station. For example, although BlueTooth corresponds to near field communication, the communication range is not limited to 10 m or 100 m defined by BlueTooth.

Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the information notification system of the present invention. The server 30 is connected to the base station 20A and the base station 20B via the network 21 constituting the mobile communication network, and the mobile terminal 10A and the mobile terminal 10B, which are one of information devices, are located in the service area of the base station 20A and perform wireless communication. Communicate with.

  In FIG. 1, only two base stations 20 (in the case of not distinguishing between the base station 20A and the base station 20B are referred to as base stations 20. The same applies to others) and two mobile terminals 10 are shown. In the notification system. The mobile communication network may be divided into a plurality of areas, and the server 30 may be grounded in each divided area.

  The mobile terminal 10 is an information device that is used personally, for example, a mobile device such as a mobile phone or a PDA (Personal Digital Assistant) or a portable personal computer, and a storage unit that stores programs and data (not shown). And a CPU (central processing unit) for executing the program and an input means operable by the user. The mobile terminal 10 includes a server communication unit 12, a terminal processing unit 11, a position detection unit 13, a display unit 14, and a short-range communication unit 15. In the present embodiment, the portable terminal 10 is illustrated on behalf of the information device, but is not limited to the portable terminal 10 and may be another information device.

  The terminal processing unit 11 is a means for executing the function of the mobile terminal 10, and is realized by a program, stored in a storage means (not shown), and executed by a CPU (not shown). The terminal processing unit 11 controls the server communication unit 12, the position detection unit 13, the display unit 14, and the short-range communication unit 15 in order to execute the function of the mobile terminal 10. Specific operation contents will be described later in the description of the operation.

  The server communication unit 12 is provided to communicate with the server 30 on the mobile communication network, and performs wireless communication with the base station 20 under the control of the terminal processing unit 11. Although not shown, the server communication unit 12 includes an antenna for transmitting and receiving radio waves communicated with the base station 20, and converts the radio waves received in accordance with instructions from the terminal processing unit 11 into digital information and sends the digital information to the terminal processing unit 11. The digital information instructed to the terminal processing unit 11 has a function of transmitting as radio waves from the antenna.

  The short-range communication unit 15 is a means for executing short-range communication provided separately from the mobile communication network, and is controlled by the terminal processing unit 11. Near field communication is wireless communication with a communication range limited to a short distance. Unlike wide area communication performed by providing a relay station like a telephone communication network, for example, near field communication within several tens of meters to several hundred meters. This is wireless communication directly performed between information devices at a distance without using a relay station.

  The short-range communication unit 15 includes an antenna for transmitting and receiving radio waves communicated with the mobile terminal 10 or the relay device at a short distance, and converts the radio waves received in accordance with instructions from the terminal processing unit 11 into digital information. The terminal processing unit 11 has a function of transmitting the digital information instructed to the terminal processing unit 11 from the antenna as a radio wave.

  The short-range communication unit 15 can be realized by, for example, BlueTooth. In this case, the communication range is 10 m or 100 m depending on the specification. However, the communication range is not particularly limited, and the communication range can be extended to a geographical range where common information derived from the current position of the information device can be effectively used between users. The common information is, for example, evacuation guidance information at the time of a disaster, and the evacuation guidance information is information determined based on the current position, such as an evacuation destination and an evacuation route for evacuating from a disaster. For example, when a plurality of users carry the mobile terminal 10 in the same site like a school, a factory, or an office, each user can use common evacuation guidance information.

  The position detection unit 13 has a function of detecting the current position of the mobile terminal 10 itself. As an example of means for detecting the current position, there is a detection means using GPS (Global Positioning System). The means using the GPS can be realized by an antenna for receiving radio waves transmitted from a plurality of artificial satellites and a function for calculating the current position by analyzing the radio waves received under the control of the terminal processing unit 11.

  The display unit 14 is provided to display information instructed by the terminal processing unit 11 by the user, and is realized by a display device such as a liquid crystal display. The display content has a function of displaying a map and a route on the map in addition to characters. In the case where the mobile terminal 10 is a small device such as a mobile phone, it may be realized in combination with an input means such as a touch screen.

  The network 21 is a network for connecting a mobile communication network and connects the server 30 and each base station 20 to each other to exchange data. In FIG. 1, the base station 20 is directly connected to the network 21, but when a large number of base stations 20 are connected, a relay device may be inserted between the base station 20 and the network 21. In addition to the server 30, there is a device for controlling connection of a mobile communication network, and a gateway for connecting to another communication network such as a wired telephone network or the Internet is also connected.

  The base station 20 is wirelessly connected to the mobile terminal 10 located in the vicinity, and is connected to the server 30 via the network 21. Since the base station 20 communicates with the mobile terminal 10 within a predetermined distance by radio, the base station 20 is specified as an area having a communication range. In the case of a mobile phone, at least one base station 20 is installed in a communication range called a call area, and is installed so as to cover the service target area of the mobile communication network.

  The server 30 is an information processing apparatus having a function of providing information to the mobile terminal 10, and has a storage means (not shown) for storing a program and data and a CPU for executing the program, An information holding unit 32 is included.

  The server processing unit 31 is a means for executing the functions of the server 30, is realized by a program, is stored in a storage means of the server 30, and is executed by the CPU of the server 30. The server processing unit 31 controls the information holding unit 32 in order to execute the function of the server 30, and broadcasts the occurrence of an event or an alarm to the area identified as the notification target for the occurrence of the event. When a common information request including the current position of the mobile terminal 10 is received from the mobile terminal 10, the common information related to the event or alarm is generated and returned from the current position.

  The information holding unit 32 is an area provided in the storage unit of the server 30 for storing evacuation destination information, map information, and position information of the base station 20 in each place. The evacuation destination information is information including the name and address of a building or park designated as an evacuation destination, position information designated by the longitude and latitude thereof. Map information includes evacuation destination and road information. The position information of the base station 20 is information indicating an address, latitude / longitude for each base station 20.

  Next, the operation of the embodiment of the present invention will be described with reference to the drawings. First, it is assumed that the arrangement of the mobile terminal 10 and the base station 20 is the arrangement shown in FIG. 2, and the base station 20A is the target area for the broadcast. In FIG. 2, it is assumed that the mobile terminals 10A to 10F are in the communication range of the base station 20A, and the mobile terminals 10A to 10D are within the short-range communication range. The operation of the portable terminal 10A when the broadcast is performed with this arrangement will be mainly described.

  First, when an earthquake occurs in XX prefecture, the designated organization detects the occurrence of the earthquake and collects necessary information such as the occurrence area, epicenter, seismic intensity, tsunami hazard and warning for evacuation advice. Create outbreak information. If the predetermined engine further analyzes the occurrence information and determines that there is a risk of a tsunami, it creates alarm information for evacuation recommendation for the tsunami and sends it to the server 30 together with the occurrence information. Thus, the server 30 of the present invention starts operation by receiving the occurrence information and the alarm information.

  The following description will be given with reference to the flowchart of FIG. FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention, and shows the operation of the server 30 and the operation of the mobile terminal 10A separately. When receiving the occurrence information and the alarm information (S61), the server processing unit 31 of the server 30 creates a wide area notification based on the occurrence information and the alarm information and distributes it to the base station 20 to be broadcast (S62). The base station 20 that has received the wide area notification broadcasts the wide area notification to the mobile terminal 10 within the mobile communication range of the local station.

  The wide area notification is a notification that the server 30 makes to the mobile terminal 10 prior to the distribution of the common information, and is a notification for notifying that a predetermined event such as an earthquake, fire, or flood has occurred, The common information is evacuation guidance information and directions to the venue.

  FIG. 4 is a diagram showing an example of a wide area notification. The wide area notification in FIG. 4 includes an occurrence message for notifying the occurrence of an event “I felt a strong earthquake in XX prefecture at about 10:10” and “Tsunami If you are in the vicinity of the coast, please evacuate to the hill. Also included.

  The operation of step S62 will be described in detail. The server processing unit 31 determines that the occurrence event is an earthquake, the occurrence time is 10:10, the occurrence area is XX prefecture, the location information of the epicenter, and the seismic intensity of each place. From the occurrence information including the information, an occurrence message “I felt a strong earthquake in XX prefecture at around 10:10” is created. The server processing unit 31 has a risk of tsunamis. From the warning information that recommends evacuation to the coastal areas of XX and △ □ prefectures, “There is a danger of tsunami. Create an alert message. The occurrence message and the warning message may be stored in advance in the storage means in association with the type of event that occurs.

  Further, the server processing unit 31 refers to the information holding unit 32 to read the map information of the earthquake occurrence area, registers the location of the epicenter included in the occurrence information in this map information, and sets the seismic intensity of each place to the position of each area. The registered explanatory diagram is created, and the wide area notification shown in FIG. 4 is created together with the occurrence message and the warning message.

  Subsequently, the server processing unit 31 specifies the area where the wide area notification should be distributed from the occurrence information and the alarm information, and the location information of the base station 20 held in the information holding unit 32 corresponding to the specified distribution destination area , And notifies the extracted base station 20 of the wide area notification. In the example of FIG. 4, the coastal areas of XX and △ □ prefectures are evacuation advisory areas. Therefore, the server processing unit 31 identifies the coastal areas of XX and △ □ prefectures as distribution destination areas, and the information holding unit 32. Referring to FIG. 5, a wide area notification created by extracting the base stations 20 installed in the coastal areas of XX and △ □ prefectures is transmitted via the network 21. Depending on the contents of the wide area notification, all base stations 20 may be specified as the notification destination.

  Next, the arrangement of FIG. 2 will be described before describing the operation of the mobile terminal 10A when a wide area notification is received. FIG. 2 is a diagram illustrating an example of the arrangement of the mobile terminal 10 when the mobile terminal 10A receives the wide area notification, and the base station 20A is a distribution destination of the wide area notification. In the example of FIG. 4, the base station 20 </ b> A is arranged in either the coastal area of XX prefecture or the coastal area of △ □ prefecture. The mobile terminals 10A to 10F exist in the communication range of the base station 20A, and the mobile terminals 10A to 10D are in a range in which short-distance communication is possible.

  The wide area notification transmitted from the server 30 is received by the base station 20A, and the base station 20A broadcasts the wide area notification to the mobile terminals 10A to 10F. Upon receiving the wide area notification, the terminal processing unit 11A of the mobile terminal 10A displays the wide area notification on the display unit 14, instructs the position detection unit 13 to calculate the current position (latitude / longitude), and acquires the current position of the calculation result. (S71). Thereby, for example, the display as shown in FIG. 4 is displayed on the mobile terminal 10A, and the user can start the evacuation action knowing the occurrence of the earthquake and the danger of the tsunami.

  The terminal processing unit 11A confirms whether the short-range communication unit 15 has received a request suppression signal from the mobile terminals 10B to 10D in the short-range range (S72). When the reception of the request suppression signal is confirmed, the terminal processing unit 11 waits for the evacuation guidance information to be transmitted from the mobile terminal 10 (any of BD) that has transmitted the request suppression signal, and proceeds to step S76 (described later). The request suppression signal is a signal for suppressing transmission of a common information request to the server 30. The common information request is a request for the server 30 to acquire evacuation guidance information, which is common information that is commonly required by the mobile terminals 10 (in this case, the mobile terminals 10A to 10D) at a short distance, The current position information of the mobile terminal 10 is included.

  The terminal processing unit 11A waits for a predetermined time for the request suppression signal (S73). If the request suppression signal is not received even after waiting for the predetermined time, the terminal processing unit 11A instructs the short-range communication unit 15 to request the request suppression signal. And a common information request is sent to the server 30 with the current position in order to acquire evacuation guidance information (S74). The predetermined time is a predetermined time for each mobile terminal 10 and is provided to prevent each mobile terminal 10 from accessing the server 30 at the same time.

  That is, when a request suppression signal is not received from any of the mobile terminals 10B to 10D after waiting for a predetermined time, the terminal processing unit 11A acquires evacuation guidance information from the server 30 on behalf of the mobile terminals 10A to 10D. to decide. Then, the terminal processing unit 11A distributes a request suppression signal by short-range communication so that the mobile terminals 10B to 10D do not transmit the common information request, and transmits the common information request to the server 30 as a representative. The mobile terminals 10B to 10D that have received the request suppression signal operate so as to proceed to step S76 in step S72, respectively, so that transmission of the common information request is suppressed.

  When the server processing unit 31 of the server 30 receives the common information request via the base station 20A and the network 21, the server processing unit 31 refers to the evacuation destination information held in the information holding unit 32 based on the current position attached to the common information request. The optimum evacuation destination is extracted, and map information in the vicinity of the evacuation destination and the current position is read from the information holding unit 32 (S63). Subsequently, the server processing unit 31 determines an optimum evacuation route based on map information including the evacuation destination, the current position, and road information, creates evacuation guidance information, and returns the evacuation guidance information to the mobile terminal 10A (S64). If road information that is recommended as an evacuation route is included in the road information, a safer evacuation route can be determined by determining an evacuation route so that the recommended road is used preferentially.

  FIG. 5 is a diagram showing an example of evacuation guidance information. The evacuation guidance information is information that incorporates the current location, evacuation destination, and evacuation route on a map to make it easier for the user to see the evacuation route. In the example of FIG. 5, a route from the current position to the evacuation destination ΔΔ mountain park is shown on the map as an evacuation route.

  Upon receiving the evacuation guidance information from the server 30, the terminal processing unit 11A of the mobile terminal 10A displays the evacuation guidance information on the display unit 14 and transmits the received evacuation guidance information by instructing the short-range communication unit 15 ( S75). The evacuation guidance information displayed on the mobile terminal 10A is as shown in FIG. 5, and the user can evacuate to the evacuation destination with peace of mind while viewing the evacuation guidance information displayed on the mobile terminal 10A.

  The mobile terminals 10B to 10D receive the evacuation guidance information from the mobile terminal 10A and display the evacuation guidance information on each display unit 14, so that the user of the mobile terminals 10B to 10D acquires the same evacuation guidance information as the user of the mobile terminal 10A. be able to. Similarly, the terminal processing unit 11A that has received the request suppression signal in step S73 receives the evacuation guidance information from the representative mobile terminal 10 among the mobile terminals 10B to 10D and displays it on the display unit 14A (S76). . Accordingly, the mobile terminal 10 </ b> A can obtain the evacuation guidance information provided by the server 30 without accessing the server 30.

  By operating in this way, in the present invention, when there are a plurality of portable terminals 10 in the short-range communication range, one of them represents the server 30 to obtain evacuation guidance information as a representative, Since this information can be distributed to other mobile terminals 10 in the short-range communication range by communication, the processing load of the server 30 can be greatly reduced, and the communication load of the mobile communication network can be greatly reduced.

  Accordingly, the overload of the mobile communication network and the overload of the server 30 are reduced, and the time until the delivery of the evacuation guidance information to all of the mobile terminals 10 to be notified can be greatly shortened. Evacuation guidance information can be obtained. Alternatively, even if the performance of the server 30 or the mobile communication network is lowered, processing can be performed in the same time, so that the system can be constructed at low cost.

  In addition, since the server 30 transmits the wide area notification at regular intervals following the first broadcast, each mobile terminal 10 can update the current position and the optimum evacuation route. Even if the directions are wrong during evacuation, the correct evacuation route can be obtained from the evacuation guidance information distributed after the second time. Here, the fixed interval is set to a time longer than a time during which all the common information requests from the target mobile terminal 10 can be processed, so that a delay in the first delivery to the mobile terminal 10 does not occur.

  In the above description, the representative of the mobile terminal 10 in the short-range communication range is determined using a predetermined time difference determined in advance for each mobile terminal 10, but in addition, the representative using the identification information of the mobile terminal 10 is used. May be determined. When the identification information of the portable terminal 10 is used as a determination method, the operations in steps S72 and S73 may be performed as follows. A case will be described as an example in which the mobile phone number used when the mobile terminal 10 communicates with the mobile communication network is used as identification information.

  First, the terminal processing unit 11 acquires a mobile phone number from each mobile terminal 10 within the short-range communication range by short-range communication. That is, the mobile terminal 10A acquires the mobile phone numbers of the mobile terminals 10B to 10D, and compares whether the mobile phone number of the mobile terminal 10A is the minimum. If the mobile phone number of the mobile terminal 10A is the smallest, the mobile terminal 10A recognizes that the mobile terminal 10A has become a representative and proceeds to step 74 to transmit a common information request to the server 30. If the mobile phone number of the mobile terminal 10A is not the minimum, the mobile terminal 10A recognizes that the mobile terminal 10A is not a representative and proceeds to step 76. As described above, the representative determination method is not limited to the procedure of the flowchart of FIG. 3 and can be realized by another method.

  Further, in the above description, the notification destination of the evacuation guidance information has been described as the portable terminal 10, but the present invention can be achieved even if the portable terminal 10 is a stationary telephone or a personal computer and the portable communication network is replaced with a wired telephone network. It is obvious that it can be applied. In the case of a PC, it is necessary to provide a communication means for a wired telephone network instead of the server communication unit 12. The server 30 may be connected to the wired telephone network or connected to the Internet connected via the wired telephone network.

  In the case of a wired telephone network, there is nothing corresponding to the base station 20, so the address of the telephone or PC is specified based on the contract information, and it is determined whether the address is the evacuation target area. It is only necessary to broadcast a wide area notification, or it may be wider than the base station 20, but a wired telephone relay station may be determined to be in the evacuation target area and broadcast to the subordinate.

  In the above description, the evacuation guidance information at the time of disaster has been described as an example of the common information, but the common information is not limited to the evacuation guidance information. For example, when an event is to be held in a large amusement park or park, an event notification is broadcast to all hands or some mobile terminals 10 in the venue, and one of the mobile terminals 10 within a short distance is represented. Then, it is possible to use the route information from the current position to the event site as common information and distribute it to the mobile terminals 10 located at a short distance. Thus, when the urgency with respect to the transmission time of common information is small compared with evacuation etc., even if the performance required by the server 30 and the communication performance required between the mobile terminal 10 and the server 30 are lowered, there is no problem. Since there is no system, the system can be constructed at low cost.

It is the block diagram which showed the structure of the information notification system of embodiment of this invention. It is the figure which showed an example of arrangement | positioning of the portable terminal 10 in order to demonstrate operation | movement of this invention. It is the flowchart which showed the operation | movement of this invention. It is the figure which showed an example of the wide area notification of embodiment of this invention. It is the figure which showed an example of the evacuation guidance information of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable terminal 11 Terminal processing part 12 Server communication part 13 Position detection part 14 Display part 15 Short-range communication part 20 Base station 21 Network 30 Server 31 Server processing part 32 Information holding part

Claims (9)

An information notification system for notifying a common information that can be commonly used by a plurality of information devices at a short distance from a server to the information device via a base station ,
The information device includes a server communication unit that communicates with the server, a short-range communication unit that performs short-range communication with the information device at a short distance, and a position detection unit that detects a current position,
When the server receives information that is a target of wide area notification that promotes acquisition of common information, the server specifies an area to be distributed based on the received information, and a base station corresponding to the specified area is held in the information holding unit. extracted by referring to the location information of that base station, via the extracted base station transmits a wide-band notification to the plurality of information devices,
When the information device receives the wide area notification at the server communication unit, the short-range communication unit communicates with another information device at a short distance to determine a representative, and when the information device becomes a representative, the position Create a common information request with the current position detected by the detection unit and send it to the server,
When the server receives the common information request, it creates common information derived from the current location attached to the common information request and returns it to the information device,
When the information device receives common information, the information device transmits the received common information from the short-range communication unit to the information device at a short distance. When the information device receives the wide area notification at the server communication unit, the short distance communication unit monitors the reception of the request suppression signal, and does not receive the request suppression signal even after a predetermined time has elapsed. 2. The information notification system according to claim 1 , wherein the information is determined to be a representative and a request suppression signal is transmitted by the short-range communication unit. When the information device receives the wide area notification by the server communication unit, the information device obtains identification information from the information device located at a short distance by the short-range communication unit and determines a representative by comparing the identification information. The information notification system according to claim 1 . 4. The information system according to claim 1, wherein the information device acquires common information from another information device at the short distance when the information device is not representative. The information device is a mobile portable terminal connected to the server via a base station, and the server repeatedly transmits the wide area notification to the information device via a base station at a predetermined interval. The information notification system according to claim 1 . The common information is evacuation guidance information including an evacuation route from the current position to the evacuation destination, and the server includes an information holding unit that holds position information of the evacuation destination designated in advance and map information of each area. When the common information request is received, an evacuation destination is determined with reference to the information holding unit based on the current position attached to the common information request, and an evacuation route is displayed on the map from the current position, the evacuation destination, and the map information. 6. The information notification system according to claim 1, wherein the evacuation guidance information is created. An information notification method for notifying a common information that can be commonly used by a plurality of information devices at a short distance from a server to the information device,
The information device includes a server communication unit that communicates with the server, a short-range communication unit that performs short-range communication with the information device at a short distance, and a position detection unit that detects a current position,
When the server receives information that is a target of wide area notification that prompts acquisition of common information, the server specifies an area to be distributed based on the received information, and a base station corresponding to the specified area is held in the information holding unit. extracted by referring to the location information of that base station, via the extracted base station transmits a wide-band notification to the plurality of information devices,
When the information device receives the wide area notification at the server communication unit, the short-range communication unit communicates with another information device at a short distance to determine a representative, and when the information device becomes a representative, the position Create a common information request with the current position detected by the detection unit and send it to the server,
When the server receives the common information request, it creates common information derived from the current location attached to the common information request and returns it to the information device,
When the information device receives common information, the information device transmits the received common information from the short-range communication unit to the information device at a short distance. When the information device receives the wide area notification at the server communication unit, the short distance communication unit monitors the reception of the request suppression signal, and does not receive the request suppression signal even after a predetermined time has elapsed. 8. The information notification method according to claim 7 , wherein the information is determined as a representative and a request suppression signal is transmitted by the short-range communication unit. The information device is a mobile portable terminal connected to the server via a base station, and the server repeatedly transmits the wide area notification to the information device via a base station at a predetermined interval. The information notification method according to claim 7 or 8 .

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