JP2008101942A - Earthquake countermeasure system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake countermeasure system having an emergency contact means by utilizing a part of an existing telephone network facility. <P>SOLUTION: This earthquake measuring system 10 uses a telephone network 11 comprising exchanges 13 and a plurality of terminal devices 14a-14f installed directly or indirectly in the exchanges. An earthquake alarm device 15 is connected with the exchanges, and the earthquake alarm device receives information for an earthquake, then sends an earthquake countermeasure start signal to the exchanges, The exchanges having a memory 22 storing the information of the terminal devices for emergency contact receive the earthquake countermeasure start signal and send a call signal to the terminal devices 14a-14f for emergency contact use using the stored information in the memory, and then secure the line for the emergency contact. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an earthquake countermeasure system for predicting an incoming seismic wave in advance based on information about an earthquake obtained by observing an earthquake and taking countermeasures for disaster prevention before the seismic wave arrives.

  In recent years, there has been proposed a system that informs of the predicted strength of an earthquake and the predicted arrival time (time), supports the preparation of a kite against an earthquake, and prevents disasters (Patent Document 1).

  This system is composed of an earthquake observation network arranged nationwide and a central organization that supervises earthquake information, and transmits real-time information observed by each earthquake observation network to the receiving section of the central organization. Real-time information sent from the observation network is earthquake parameter information (three elements of the earthquake: location, time, magnitude) such as the original data, strength that can be used for disaster prevention, arrival time, etc. Three elements are obtained by the analysis unit.

  Then, it is determined whether or not the JMA seismic intensity scale is, for example, a magnitude that gives a value of 5 or more in a specific location, and whether or not the epicenter distance in the specific location is within a sensitive radius determined from the magnitude. In addition, the prediction calculation unit calculates the standard intensity at the specific location from the epicenter distance, magnitude, and depth, as well as the amplification factor at the specific location due to the geological situation of the place of earthquake motion, the difference in the structure of the building, etc. Using the standard intensity and the amplification factor, the seismic parameters of the seismic intensity such as the predicted intensity of the seismic wave (S wave) or the maximum velocity, maximum acceleration, maximum displacement, and predicted arrival time are obtained.

  When the obtained predicted intensity exceeds the preset lower limit intensity, the arrival prediction time and the predicted intensity are notified (displayed) based on the propagation speed of the seismic wave (P wave, S wave).

  In addition, as a seismic alarm device that can issue alarms with a simpler configuration, the seismometer installation location (your own station), after observing the P wave from the measured original data, before the arrival of the S wave An earthquake warning device has also been proposed that issues a warning by estimating the degree of damage (such as seismic intensity) (Patent Document 2).

  Furthermore, by using neural networks, it is possible to evaluate not only the earthquake early warning but also the ground period and the vibration characteristics of the building with high accuracy, and the reliability of prediction is dramatically improved by optimizing the neural network through learning. An earthquake disaster prevention system has been proposed (Patent Document 3).

  By the way, when a disaster such as an earthquake occurs, outgoing calls and incoming calls are more concentrated in the affected area than usual, which may result in congestion exceeding the processing capacity of the exchange. In a conventional fixed telephone exchange, it has been proposed to restrict outgoing calls as a countermeasure against congestion when the usage rate of a call processor in the exchange exceeds a threshold value for a certain time or more (Patent Document 4).

JP 2003-66152 A JP 2006-112999 A JP 2006-170739 A JP 2000-36866 A

  Traditionally, in the case of highly public industries such as local governments, police, firefighting, electric power, transportation, flood control, communications, broadcasting, etc. or private companies in the event of an earthquake, a dedicated pager (pager, (There are names such as Quickcast) and dedicated emergency wireless terminals were distributed, and after the earthquake occurred, they were used to communicate. Since it is necessary to distribute dedicated terminals individually, it is not a reliable communication network because it is economically burdensome and contacts are made in a confused state after the earthquake.

  In addition, when dedicated terminals are not distributed, staff members or employees gathered and contacted themselves, but it was left to the independence of each person and could not be said to be reliable at all. The telephone line in a congested state after the earthquake occurred did not remain in contact. In addition, even when a dedicated terminal is distributed or when it is left to each person's independence, delays in response are a problem because communication and measures are taken after the occurrence of an earthquake.

  Conventionally, when a disaster occurs such as an earthquake, if one exchange performs a call restriction process as a countermeasure against congestion, there has been a problem that calls are concentrated on other exchanges and the congestion state spreads. As a result, a failure occurs in the telephone network itself, resulting in an overall communication failure.

  In particular, since the mobile phone terminal is highly portable, there is a characteristic that if the terminal moves and concentrates in a specific area, it is limited by the number of wireless lines and is not easily connected. In addition, in order to restrict incoming calls into an area by using a mobile phone switchboard, it is necessary to check with the service control station to determine which area each mobile terminal is in, so the confirmation processing to the control station also increases. However, the influence has spread to other telephone networks, and the total amount of all telephone networks has been regulated.

  Therefore, an object of the present invention is to provide an earthquake countermeasure system provided with an emergency contact means by using a part of existing telephone network equipment. In addition, the present invention provides an earthquake countermeasure system that can perform congestion countermeasure processing for suppressing the occurrence of a failure in the telephone network itself at the time of a disaster using a part of the existing telephone network equipment. For other purposes.

  The earthquake countermeasure system of the present invention is an earthquake countermeasure system using a telephone network including an exchange and a plurality of terminal devices accommodated directly or indirectly in the exchange, and an earthquake alarm device is connected to the exchange. The earthquake alarm device receives information on an earthquake and sends an earthquake countermeasure activation signal to the exchange. The exchange has a memory in which information on a terminal device for emergency contact is recorded, and the earthquake countermeasure activation signal. And a call signal is transmitted to the terminal device for emergency contact using the information recorded in the memory to secure a line for emergency contact.

  Furthermore, in the earthquake countermeasure system, it is preferable that the exchange sends a message based on the notification information generated by the earthquake warning device based on the information related to the earthquake to the emergency contact terminal device that has responded. .

  Further, in the earthquake countermeasure system, the earthquake warning device calculates a predicted seismic intensity in an area where a connected switch is located based on the information on the earthquake, and when the predicted seismic intensity exceeds a threshold, the switch The earthquake countermeasure activation signal may be sent to

  Furthermore, in the earthquake countermeasure system, it is preferable that the exchange receives the earthquake countermeasure activation signal and regulates transmission of a line to a terminal device other than the emergency contact terminal device.

  Another earthquake countermeasure system according to the present invention is an earthquake countermeasure system using a telephone network including an exchange and a plurality of terminal devices accommodated directly or indirectly in the exchange. A device is connected, the earthquake warning device receives information relating to an earthquake, sends an earthquake countermeasure activation signal to the exchange, the exchange receives the earthquake countermeasure activation signal, and the exchange and the terminal device It is characterized by restricting communication.

  Further, in the earthquake countermeasure system, the earthquake warning device generates disaster area information based on the information related to the earthquake, sends the disaster area information to the exchange, and the exchange is based on the disaster area information. It is preferable to regulate communication with a terminal device in a disaster area.

  Further, in the earthquake countermeasure system, it is preferable that the exchange regulates transmission to the terminal device in the disaster area or transmission from the terminal device in the disaster area.

  Further, in the earthquake countermeasure system, the exchange may generate a restriction number table related to a terminal device located in the disaster area and restrict transmission to the terminal device included in the restriction number table.

  According to the present invention, the telephone network switch sends the call signal to the emergency contact terminal device using the information recorded in the memory and secures the emergency contact line. Can be used to make an emergency contact with the terminal device for emergency contact, and a versatile emergency contact network can be formed with less equipment investment. Further, in the event of a disaster, an emergency contact line can be secured and emergency contact can be made before the earthquake arrives, so that a quicker response can be performed.

  Further, according to the present invention, the telephone network switch receives the earthquake countermeasure activation signal and restricts communication between the switch and the terminal device, so that communication restriction or preparation can be performed before the occurrence of the earthquake. It is possible to reduce the burden on the telephone network when an earthquake occurs and to prevent congestion. Moreover, congestion can be more effectively prevented by selectively restricting communication to or from the disaster area.

  FIG. 1 is a block diagram conceptually showing the structure of an earthquake countermeasure system 10 of the present invention.

  In FIG. 1, an earthquake countermeasure system 10 is connected to a telephone network 11 including a line 12, an exchange 13 connected to the line 12, and a plurality of terminal devices 14 a to 14 f accommodated in the exchange 13, and the exchange 13. The earthquake alarm device 15 is connected to the earthquake alarm device 15 and a line 16 is connected to the earthquake alarm device 15 and transmits information related to the earthquake.

  The telephone network 11 can use at least a part of an existing telephone network. The telephone network is a public telephone network, ISDN (abbreviation of Integrated Service Digital Network, also called Digital Integrated Service Network), ADSL (Asymmetric Digital Subscriber Line), CATV (Community Antenna TeleVision) network, optical fiber network, wireless LAN (Local Area Network), CS (Communication Satellite) broadcast, mobile telephone network, etc. can be used.

  The line 12 is a communication transmission line corresponding to the telephone network 11, and is a dedicated line for connecting the exchange to the exchange. For example, a common line signal system. The line 12 can also be used as the line 16 for transmitting information related to the earthquake connected to the earthquake warning device 15 (an example of separate lines is described in FIG. 1). In this case, the line connected to the outside may be branched into the line 12 and the line 16 by a router or the like.

  The exchange 13 is a device that connects lines between terminal devices, includes a processing unit 21 and a memory 22, and accommodates a plurality of terminal devices 14a to 14f directly or indirectly. Examples of the exchange 13 include a subscriber exchange, a relay exchange, a gateway exchange, a mobile communication control station, and a mobile communication exchange. The subscriber exchange is directly connected to the subscriber line, and accommodates a plurality of terminal devices 14a to 14f. The relay exchange connects the exchange and the exchange, and a plurality of terminal devices are accommodated indirectly through the subscriber exchange or through another relay exchange or gateway exchange with the subscriber exchange. Has been. A gateway exchange connects networks of different operators to each other, and is connected to a relay exchange or a subscriber exchange. Further, the gateway exchange is connected to the subscriber exchange or between the subscriber exchange and other exchanges. A plurality of terminal devices are accommodated indirectly through the gateway exchange. The mobile communication control station corresponds to a subscriber exchange in a landline telephone, accommodates the mobile communication terminal device via a radio base station in the area of the mobile communication control station, registers the location of the mobile communication terminal device, Radio link control, call processing, etc. are performed at the time of incoming call or handover. The mobile communication switching center is connected to another type of network and each mobile communication control station, and has a terminal information database consisting of location registration information of mobile communication terminal devices collected by each mobile communication control station. For communication with a terminal, the mobile communication terminal is searched for in which area, and a link is formed with the mobile communication control station in that area.

  In FIG. 1, the exchange 13 is described as being directly connected to the terminal devices 14a to 14f. However, this is a conceptual diagram, and when the exchange 13 is a relay exchange, the terminal device 14a. In the case where a subscriber exchange is interposed between ˜f and the exchange 13 is a mobile communication control station, they are connected wirelessly via a radio base station.

  The processing unit 21 of the exchange 13 normally performs processing for connecting lines between terminal devices and the like, but performs earthquake countermeasure processing based on signals and information from the earthquake warning device 15. The memory 22 stores information and response messages related to emergency contact terminal devices.

  The plurality of terminal devices 14a to 14f can use communication terminals such as a fixed telephone, a facsimile, a mobile phone, and a personal handyphone system (PHS). In FIG. 1, terminal devices 14a and 14f are registered in the memory 22 of the exchange 13 as terminal devices for emergency contact, and are surrounded by thick lines. The terminal device for emergency contact is a terminal device owned by a person who needs countermeasures in the event of a disaster, and is registered in advance in the exchange 13 in case of a disaster. For example, it is a terminal device owned by a staff member or employee of a highly public industry such as a local government, police, fire fighting, electric power, transportation, flood control, communication, broadcasting, or a private company. The emergency contact terminal device itself may be the same as a normal terminal device.

  The earthquake alarm device 15 includes a processing unit 31, a memory 32, and an exchange interface unit 33. The line 16 is connected to the exchange 13 through the exchange interface unit 33.

  The processing unit 31 of the earthquake warning device 15 is a CPU (Central Processing Unit) that controls the operation of the earthquake warning device 15, generates an earthquake countermeasure activation signal based on at least information related to the earthquake transmitted from the line 16, and the exchange An earthquake countermeasure activation signal is sent to the exchange 13 via the interface unit 33. Furthermore, the processing unit 31 may generate disaster area information and notification information. In addition, the earthquake alarm device 15 can be integrated into the exchange 13 so that the processing unit 21 of the exchange 13 can also be used as the processing unit 31 of the earthquake alarm device 15.

  The earthquake countermeasure activation signal is a signal for causing the exchange 13 to perform earthquake countermeasure processing. The disaster area information is information on an area where the seismic intensity is equal to or greater than a certain seismic intensity or an area where a predicted seismic intensity greater than a certain seismic intensity calculated from information on the earthquake is predicted (hereinafter simply referred to as “stricken area”). . If the earthquake warning device 15 received the disaster area information included in the earthquake information, it may be extracted to generate the disaster area information, but the earthquake information includes the disaster area information. If not, the processing unit 31 calculates the disaster area estimated to be equal to or greater than the set seismic intensity based on the information about the earthquake, and generates the disaster area information. As the content of the notification information, information regarding the earthquake may be used as it is, or a result calculated based on the information regarding the earthquake may be used as the notification information. For example, if the information on the earthquake is information on the predicted strength, maximum speed, maximum acceleration, maximum displacement, predicted arrival time or remaining time until the predicted arrival time of the earthquake in the area where the earthquake warning device 15 is installed, It is sufficiently effective to notify one or several as it is as notification information. In addition, even if the information about the earthquake is only information about the place, time, and magnitude of the earthquake, it is necessary to take disaster prevention measures against the earthquake simply by notifying one or several of the information as notification information. Can do. However, if the information about the earthquake is information about the location, time, and magnitude of the earthquake, the processing unit 31 based on the information, the predicted strength, maximum speed of the earthquake in the area where the earthquake alarm device 15 is installed, It is preferable to calculate the maximum acceleration, the maximum displacement, the predicted arrival time, or the remaining time until the predicted arrival time, and to include one or several of the information in the notification information, since it is possible to prepare for an earthquake.

  The memory 32 of the earthquake warning device 15 stores voice information transmitted as notification information, information when the processing unit 31 calculates, and the like, and is used when the processing unit 31 generates notification information. It is also possible to integrate the earthquake warning device 15 into the exchange 13 so that the memory 22 of the exchange 13 can also be used as the memory 32 of the earthquake warning device 15.

  The exchange interface unit 33 is connected to the exchange 13 and sends signals, information, and the like to be sent to the exchange 13 in a format corresponding to the exchange 13.

  The line 16 is directly or indirectly connected to the earthquake warning device 15, and is for transmitting information related to the earthquake to the earthquake warning device 15 from a distribution source (not shown).

  The information about earthquakes transmitted through the line 16 is the observation results observed by sensors installed in various places, or the calculation results based on the observation results. Obtain the information sent from the Japan Meteorological Agency or the Japan Meteorological Agency. It is distributed from a distribution source such as a distribution company that distributes through a line. As information about the earthquake, for example, information on the location, time, and magnitude that are the three elements of the earthquake, and the predicted strength, maximum speed, maximum acceleration, maximum displacement, predicted arrival time, or predicted arrival of the earthquake in the area where the earthquake alarm device 15 is installed For example, information on the remaining time until the time. In addition, disaster information other than earthquakes may be notified through the line 16.

  Next, the operation of the earthquake countermeasure processing of the earthquake countermeasure system of the present invention will be described with reference to FIGS. FIG. 2 is a flowchart when emergency communication is performed as an earthquake countermeasure process by the earthquake countermeasure system, and FIG. 3 is a diagram illustrating a connection sequence at the time of emergency communication. Note that the leftmost column in FIG. 3 is a distribution source 41 of information related to earthquakes.

  First, in step 1 (S1), the earthquake alarm device 15 receives the information 42 about the earthquake transmitted from the distribution source 41 and transmitted through the line 16, and the earthquake countermeasure processing operation is started.

  In step 2, the processing unit 31 of the earthquake warning device 15 is based on the earthquake information 42, the predicted earthquake intensity, maximum speed, maximum acceleration, maximum displacement, predicted arrival time or remaining time until the predicted arrival time in the installation area. Etc. However, Step 2 is not necessary when the information 42 relating to the earthquake already includes information such as predicted strength.

  In step 3 (S3), it is determined whether the predicted intensity of the earthquake in the installation area is smaller or larger than a preset threshold value. Here, the threshold value is the intensity of the earthquake in question in the facility. For example, when the earthquake countermeasure process is executed when the seismic intensity is 3 or more, the threshold value may be set to seismic intensity 3. Without setting a threshold, it is possible to always operate regardless of the intensity of the earthquake. If no threshold value is set, step 3 is not necessary.

  In step 4 (S4), an earthquake countermeasure activation signal 43 is sent from the earthquake warning device 15 to the exchange 13. The earthquake countermeasure activation signal 43 causes the exchange 13 to execute an earthquake countermeasure process, and is sent to the exchange 13 via the exchange interface unit 33 of the earthquake alarm device 15.

  In step 5 (S5), since the exchange 13 that has received the earthquake countermeasure activation signal 43 makes an emergency contact as one of the earthquake countermeasure processing, information on the emergency contact terminal devices 14a and 14f is stored from the memory 22 of the exchange 13. Is read. The information related to the emergency contact terminal devices 14a and 14f may be a telephone number or information associated with the telephone number as long as the telephone number of the emergency contact terminal device can be finally obtained.

  For example, as shown in FIG. 4, the accommodation terminal device table (A) in which the telephone numbers of the terminal devices accommodated in the memory 22 are registered, and the emergency contact table (in which information related to the emergency contact terminal device is registered) If B) is recorded, the reference number is read from the emergency contact table, and the telephone number of the terminal device for emergency contact can be obtained from the corresponding reference number in the accommodation terminal device table. In FIG. 4, the reference number No. 1, no. 6... Are registered, the corresponding reference number No. 1 telephone number xx-xxxx-aaaa and reference number No. The telephone number xx-xxxx-ffff and (hereinafter omitted) of the terminal device 14f in FIG.

  Further, the emergency contact priority may be set for the terminal device to be recorded in the exchange, and information related to the emergency contact terminal device may be recorded. For example, three levels of emergency contact priority are set, and emergency contacts are made in order from the terminal device with the highest priority. A terminal device with a low priority may occupy one line for a plurality of terminal devices, and a terminal device with the lowest priority may be subject to outgoing call control described later.

  In step 6 (S6), the exchange 13 sends call signals 44a and 44f to the telephone numbers of the read emergency contact terminal devices 14a and 14f. In step 7 (S7), it is determined whether or not there is a response from the emergency contact terminal devices 14a and 14f. If there is no response, the call is made again. If there is a response 45a or 45f, in step 8 (S8), Send out emergency messages 46a and 46f.

  The emergency messages 46 a and 46 f may be response messages recorded in the memory 22 of the exchange 13 or messages based on notification information received from the earthquake warning device 15. For example, if the message is simply “An earthquake is predicted to occur”, the notification information is not required, but the message “An earthquake with a seismic intensity of XX is predicted in XX seconds” or “ In the case of the message “Occurrence of earthquake of seismic intensity XX in XX region at XX hours XX minutes,” the notification information from the earthquake warning device 15 is required. Note that the message may be sent from the exchange 13 to each terminal device by sending the message recorded in the memory 32 of the earthquake alarm device 15 to the exchange 13 via the exchange interface unit 33.

  In FIG. 3, the exchange 13 immediately sends a message 46a because there is a response 45a from the terminal device 14a. However, since there is no response from the terminal device 14f, the second call signal 44f is transmitted, and since there is a response 45f, a message 46f is transmitted.

  The emergency communication as described above is performed, and the operation ends in step 9 (S9). Thus, the exchange 13 can make an emergency contact with the emergency contact terminal devices 14a and 14f, and can secure an emergency contact line in the event of a disaster. Further, since emergency contact is possible before the earthquake arrives, a more prompt response can be performed. Even after sending a message to the emergency contact terminal devices 14a and 14f and ending the response, the exchange 13 is dedicated as an emergency contact line, and thereafter the emergency contact terminal devices 14a and 14f Communication may be possible. This exclusive use of the line is more effective when it is performed together with communication regulation as a congestion countermeasure described later.

  FIG. 5 is a flowchart when communication restriction is performed as an earthquake countermeasure process by the earthquake countermeasure system.

  First, in step 11 (S11), when the earthquake warning device 15 receives information related to an earthquake, an earthquake countermeasure processing operation is started.

  In step 12 (S12), the processing unit 31 of the earthquake warning device 15 determines the predicted earthquake intensity, maximum speed, maximum acceleration, maximum displacement, predicted arrival time or predicted arrival time based on the information related to the earthquake. Calculate remaining time. However, Step 12 is not necessary when the information about the earthquake already includes information such as predicted strength.

  In step 13 (S13), it is determined whether the predicted intensity of the earthquake in the installation area is smaller or larger than a preset threshold value. Here, the threshold value is the intensity of the earthquake in question in the facility. For example, when the earthquake countermeasure process is executed when the seismic intensity is 3 or more, the threshold value may be set to seismic intensity 3. Without setting a threshold, it is possible to always operate regardless of the intensity of the earthquake. If no threshold is set, step 13 is not necessary.

  If the predicted earthquake intensity in the installation area is equal to or greater than the threshold value, the process proceeds to step 14 (S14), and an earthquake countermeasure activation signal is sent from the earthquake warning device 15 to the exchange 13. In step 15 (S15), the exchange 13 regulates outgoing calls of the accommodated terminal devices 14a to 14f. Here, it is preferable to make an emergency contact with respect to the emergency contact terminal devices 14a and 14f described in FIG. 2 and FIG. 3, and send to the terminal devices 14b to 14e other than the emergency contact terminal devices. Regulation is preferred. The formation of a link (communication path) by transmission from the terminal devices 14b to 14e is restricted by the transmission restriction.

  If the predicted earthquake intensity in the installation area is less than the threshold value in S13, in step 16, the processing unit 31 of the earthquake warning device 15 calculates the predicted earthquake intensity in other areas based on the information related to the earthquake. . However, if the information on the earthquake already includes information on the predicted strength in other areas, step 16 is not necessary. As indicated by the arrows from S15 to S16 in FIG. 5, even if the predicted intensity of the earthquake in the installation area is equal to or greater than the threshold value, that is, the affected area, the exchange 13 is accommodated in the accommodated terminal device 14a. The processing of S16 and subsequent steps for restricting outgoing calls to other affected areas may be performed simultaneously with the outgoing call restriction of ~ f.

  In step 17 (S17), it is determined whether the predicted intensity in other regions is smaller or larger than a preset threshold value. If it is less than the predicted intensity in other areas, the process ends until information on the next earthquake is received.

  If the affected area exists, the process proceeds to step 18 (S18), and an earthquake countermeasure activation signal is sent from the earthquake warning device 15 to the exchange 13. In step 19 (S19), the exchange 13 restricts communication with the accommodated terminal devices 14a to 14f, executes congestion countermeasures, and ends the operation (step 20). More preferably, outgoing calls are restricted for communication to the terminal device accommodated in the affected area. For example, in the case of a landline telephone, list the area codes in the affected area and generate a restriction number table, and search whether the other party's telephone number sent from the terminal device contains the restriction number table number. If included, the formation of a link (communication path) by transmission is restricted, and if not included, the link may be formed without any particular restriction. In the case of a mobile communication terminal, the mobile communication switching center generates a restriction number table by listing the telephone numbers of mobile communication terminal devices located in the affected area, and the other party's telephone number transmitted from the terminal device Is included in the restriction number table, and if included, the formation of the link by calling is restricted, and if not included, the link may be formed without any particular restriction.

  The communication regulation can be performed in any one or a plurality of subscriber exchanges, relay exchanges, gateway exchanges, mobile communication control stations, and mobile communication exchanges.

  Here, even in areas other than the disaster-stricken area, it is preferable that links from the emergency contact terminal devices 14a and 14f are preferentially formed to the disaster-stricken area. In this case, information related to the emergency contact terminal devices 14a and 14f is recorded in the memory of the exchange 13, and the telephone number of the emergency contact terminal device obtained from the information related to the emergency contact terminal device is obtained. If they match, the outgoing call restriction may be canceled and communication may be performed.

  As described above, in the earthquake countermeasure system of the present invention, communication restrictions or preparations can be made before an earthquake occurs, and the burden on the telephone network at the time of the earthquake can be reduced and congestion can be prevented. Moreover, congestion can be more effectively prevented by selectively restricting communication to or from the disaster area.

  FIG. 6 is a block diagram showing an embodiment of the earthquake countermeasure system 50 of the present invention. The telephone network 51 includes a gateway exchange 52, relay exchanges 53a and 53b, subscriber exchanges 54a and 54b, and terminal devices 14a to 14l. The gateway switch 52 is connected to another telephone network 61. An earthquake alarm device 15 is connected to each of the exchanges 52, 53a, 53b, 54a, 54b. In FIG. 6, the relay exchange 53a, the subscriber exchange 54a, and the terminal devices 14a to 14f are installed in the disaster area 55.

  When each of the exchanges 52, 53a, 53b, 54a, 54b receives an earthquake countermeasure activation signal from each of the earthquake warning devices 15, it performs emergency communication or communication restriction.

  As the emergency contact, each exchange sends each terminal device 14a, 14f, 14g, 14l based on the information related to the emergency contact terminal devices 14a, 14f, 14g, 14l recorded in the memory. When a call signal is transmitted and a response is received, an emergency message is transmitted.

  As communication restrictions, the exchanges 53a and 54a in the affected area 55 restrict outgoing calls for communication from the terminal devices 14a to 14f in the affected area 55, and the exchanges 52, 53b, and 54b arranged in other areas are The outgoing call is restricted for communication to the terminal devices 14a to 14f in the disaster area 55. Hereinafter, description will be made based on the flowchart of FIG.

  First, in step 11 (S11), when the earthquake warning device 15 receives information related to an earthquake, an earthquake countermeasure processing operation is started. In step 12 (S12), the processing unit 31 of the earthquake warning device 15 calculates the predicted strength of the earthquake in the installation area based on the information about the earthquake, and in step 13 (S13), the predicted strength of the earthquake in the installation area. Is smaller than or larger than a preset threshold value. Here, the threshold is the intensity of the earthquake in question in the facility. For example, when the earthquake countermeasure process is executed when the seismic intensity is 3 or more, the threshold may be set to seismic intensity 3.

  If the predicted earthquake intensity in the installation area is equal to or greater than the threshold value, the process proceeds to step 14 (S14), and an earthquake countermeasure activation signal is sent from the earthquake warning device 15 to the exchanges 53 and 54a. In step 15 (S 15), the relay exchange 53 a and the subscriber exchange 54 a in the disaster area 55 regulate outgoing calls of the terminal devices 14 a to 14 f accommodated in the disaster area 55. Here, it is preferable to restrict outgoing calls to the terminal devices 14b to 14e other than the emergency contact terminal device. The formation of a link (communication path) by transmission from the terminal devices 14b to e is restricted by the transmission restriction, and only the link by transmission from the terminal device 14b is formed in FIG. 6, and the transmission from the other terminal devices 14c to e is performed. The link is broken.

  When the predicted earthquake intensity in the installation area is less than the threshold value in S13 or the exchange that has controlled the transmission up to S15, the processing unit 31 of the earthquake alarm device 15 determines whether the Calculate the predicted strength of earthquakes in the region. However, if the information on the earthquake already includes information on the predicted strength in other areas, step 16 is not necessary.

  In step 17 (S17), it is determined whether the predicted intensity in other regions is smaller or larger than a preset threshold value. If it is less than the predicted intensity in other areas, the process ends until information on the next earthquake is received.

  If the affected area 55 exists, the process proceeds to step 18 (S18), and an earthquake countermeasure activation signal is sent from the earthquake warning device 15 to the exchange. In step 19 (S19), each exchange regulates communication with the accommodated terminal devices 14a to 14l, executes a countermeasure against congestion, and ends the operation (step 20). Here, it is preferable to restrict outgoing calls to the terminal devices 14b to 14e, h to k other than the emergency contact terminal device. More preferably, outgoing calls are restricted for communication with the terminal devices 14a to 14f accommodated in the affected area 55. For example, in the case of a landline telephone, a list of area codes of the affected area 55 is listed to generate a restriction number table, and a search is made as to whether the destination telephone number transmitted from the terminal device includes a restriction number table number. If it is included, the formation of a link (communication path) by transmission is limited. If it is not included, the link may be formed without particular limitation. In the case of a mobile communication terminal, the mobile communication switching center generates a restriction number table by listing the telephone numbers of mobile communication terminal devices located in the affected area 55, and the other party's phone transmitted from the terminal device. Whether or not the number is included in the restriction number table is searched. If it is included, the formation of the link by calling is restricted, and if it is not included, the link may be formed without any particular restriction.

  In FIG. 6, since the terminal devices 14h to j in the area other than the affected area 55 made a call to the terminal apparatus in the affected area 55, the terminal apparatus 14h formed a link with the subscriber exchange 54b, but then relayed it. The link is disconnected by the exchange 53b, and the links of the terminal apparatuses 14i and 14j are disconnected by the subscriber exchange 54b. Further, since the terminal device 14k is a transmission to a terminal device other than the disaster area 55, a link is formed without restriction. In addition, outgoing calls from other telephone networks 61 are restricted to the affected area 55 by the gateway exchange 52 or the relay exchange 53a.

  Here, also in areas other than the disaster-affected area 55, it is preferable that the outgoing call from the emergency contact terminal devices 14g and 14l is preferentially linked to the disaster-affected area 55. In this case, information related to the terminal device for emergency contact is recorded in the memory of the exchange, and the caller telephone number is collated with the telephone number of the terminal device for emergency contact obtained from the information related to the terminal device for emergency contact. If they match, it is sufficient to cancel the outgoing call restriction and communicate.

  As described above, in the earthquake countermeasure system of the present invention, communication restrictions or preparations can be made before an earthquake occurs, and the burden on the telephone network at the time of the earthquake can be reduced and congestion can be prevented. Moreover, congestion can be more effectively prevented by selectively restricting communication to or from the disaster area.

  In FIG. 6, the earthquake warning device 15 is connected to all of the gateway exchange 52, the relay exchanges 53a and 53b, and the subscriber exchanges 54a and 54b, but the earthquake warning device 15 is attached to only a part of them. A connected configuration may be used. For example, the earthquake warning device 15 is connected to the gateway exchange 52 and the relay exchanges 53a and 53b, and control signals are transmitted from these exchanges to the subscriber exchanges 54a and 54b, and the earthquake countermeasure processing is performed to the subscriber exchanges 54a and 54b. An operation may be executed.

  FIG. 7 is a conceptual block diagram of an earthquake countermeasure system 70 using the mobile telephone network 71. The mobile telephone network 71 includes a mobile terminal switching center 72, mobile terminal control stations 73a and 73b, base stations 74a and 74b, and mobile communication terminal apparatuses 14a to 14l. And is connected to another type of network not shown. The earthquake warning device 15 is connected to each of the mobile terminal exchange 72 and the mobile terminal control stations 73a and 73b. In FIG. 7, the mobile terminal control station 73a, the base station 74a, and the mobile communication terminal apparatuses 14a to 14f are located in the disaster area 75.

  When the mobile terminal switching center 72 receives the earthquake response activation signal from the connected earthquake warning device 15, the mobile terminal switching center 72 reads information on the emergency communication mobile communication terminal devices 14a, 14f, 14g, and 14l recorded in a memory (not shown). The terminal information database 75 is searched to obtain the location registration information of each mobile communication terminal device 14a, 14f, 14g, 14l for emergency contact. Then, the mobile terminal switching center 72 sends a calling signal to the mobile terminal control stations 73a and 73b in the area where the mobile communication terminal devices 14a, 14f, 14g, and 14l for each emergency contact are located. Further, the mobile terminal control stations 73a and 73b simultaneously send out call signals from the base stations 74a and 74b in the area. When there is a response, the mobile terminal switching center 72 or the mobile terminal control stations 73a and 73b sends a response message.

  In addition, when the mobile terminal switching center 72 and the mobile terminal control stations 73a and 73b receive the earthquake response activation signal from the connected earthquake alarm device 15, the mobile terminal switching station 72 and the mobile terminal control stations 73a and 73b regulate communication with the mobile communication terminal device and execute congestion countermeasures. To do. More preferably, outgoing calls are restricted for communication to the mobile communication terminal devices 14a to 14f accommodated in the mobile terminal control station 73a in the affected area 75. In this case, as a first method, the mobile terminal control station 73a in the affected area 75 may regulate outgoing calls from the mobile communication terminal devices 14a to 14f in the area. As a second method, the mobile communication switching center 72 generates a restriction number table by listing the telephone numbers of the mobile communication terminal devices located in the disaster area 75, and other types of line networks or mobile communication terminals. For communication from the device, search whether the other party's telephone number is included in the restriction number table, and if it is included, limit the formation of a link by outgoing call, and if not, limit it in particular What is necessary is just to form a link without it. In addition, the mobile communication switching center 72 sends a restriction number table to the mobile terminal control stations 73a and 73b, and the mobile terminal control stations 73a and 73b restrict the formation of links for communication with numbers included in the restriction number table. Also good.

  As described above, even in the earthquake countermeasure system 70 using the mobile telephone network 71, it is possible to execute the earthquake countermeasure processing before the occurrence of the earthquake, and it is possible to promptly respond to the occurrence of the earthquake by making an emergency contact. did. In addition, it is possible to easily regulate outgoing calls of the mobile communication terminal device, reduce the burden on the mobile telephone network, and prevent congestion.

  In FIG. 7, the earthquake warning device 15 is also connected to the mobile terminal control stations 73a and 73b. On the other hand, the earthquake countermeasure processing operation may be executed by a control signal from the mobile communication switching center 72 without connecting the earthquake warning device 15.

  In addition, this invention is not limited to the thing of the said embodiment, A various change is possible as needed.

The block diagram which shows notionally the structure of the earthquake countermeasure system of this invention Flow chart for emergency contact Diagram showing the connection sequence for emergency contact The figure which shows one Embodiment of the information recorded on memory Flow chart for communication restriction The block diagram which shows one Embodiment of the earthquake countermeasure system of this invention Conceptual block diagram showing an embodiment of an earthquake countermeasure system using a mobile telephone network

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Earthquake countermeasure system 11 Telephone network 12, 16 Line | wire 13 Switch 14a-f Terminal device 15 Earthquake alarm device 21 Exchanger processing part 22 Exchanger memory 31 Earthquake alarm device processing part 32 Earthquake alarm device memory 33 Exchanger interface part

Claims (8)

An earthquake countermeasure system using a telephone network comprising an exchange and a plurality of terminal devices accommodated directly or indirectly in the exchange,
An earthquake alarm device is connected to the exchange;
The earthquake warning device receives information related to an earthquake and sends an earthquake countermeasure activation signal to the exchange,
The exchange has a memory in which information relating to an emergency contact terminal device is recorded, receives the earthquake countermeasure activation signal, and sends a call signal to the emergency contact terminal device using the information recorded in the memory. An earthquake countermeasure system characterized by securing a line for sending and emergency communication.   2. The switch according to claim 1, wherein the switch sends a message based on the notification information generated by the earthquake warning device based on the information related to the earthquake to the terminal device for emergency contact that has responded. Earthquake countermeasure system.   The earthquake warning device calculates the predicted seismic intensity in the area where the connected switch is located based on the information about the earthquake, and sends the earthquake countermeasure activation signal to the switch when the predicted seismic intensity exceeds a threshold value. The earthquake countermeasure system according to claim 1 or 2, wherein   4. The switch according to claim 1, wherein the exchange receives the earthquake countermeasure activation signal and regulates transmission of a line to a terminal device other than the emergency contact terminal device. 5. Earthquake countermeasure system. An earthquake countermeasure system using a telephone network comprising an exchange and a plurality of terminal devices accommodated directly or indirectly in the exchange,
An earthquake alarm device is connected to the exchange;
The earthquake warning device receives information related to an earthquake and sends an earthquake countermeasure activation signal to the exchange,
The exchange receives the earthquake countermeasure activation signal and regulates communication between the exchange and the terminal device. The earthquake warning device generates disaster area information based on information about the earthquake, and sends the disaster area information to the exchange,
6. The earthquake countermeasure system according to claim 5, wherein the exchange regulates communication with a terminal device in a disaster area based on the disaster area information.   The earthquake countermeasure system according to claim 6, wherein the exchange regulates transmission to the terminal device in the disaster area or transmission from the terminal device in the disaster area.   The earthquake countermeasure system according to claim 6, wherein the exchange generates a restriction number table related to a terminal device located in the disaster area, and restricts transmission to the terminal device included in the restriction number table.

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