JP2006013789A - Disaster prevention telecommunication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to assure an alternative communication line even if a communication line at the usual time becomes impossible to be used at an urgent disaster time, and to enable to transfer disaster prevention information certainly. <P>SOLUTION: A disaster prevention telecommunication system transfers the disaster prevention information by establishing a connection between the terminal 11 of each organization including a self-governing body or a fire fighting office and the center apparatus 1 of a disaster prevention information center becoming an information shared hub to the terminal 11. The disaster prevention telecommunication system includes at least two or more communication lines 3-1, 3-2 to 3-n, 13, 14 and 15 which can connect as a communication line for performing a communication by establishing the connection between the terminal 11 of each organization and the center apparatus 1. The disaster prevention telecommunication system transfers the information at the normal time by establishing the connection as one specific communication line of the two or more communication lines, and transfers the information by holding the state that the connection is retained established as it is as the alternative communication line of the specific communication line at the emergency disaster time by other communication line except the specific communication line. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a disaster prevention information communication that establishes a communication line between a terminal of each institution including a local government and a fire department and a center device of a disaster prevention information center serving as a hub for information sharing with the terminal to transmit disaster prevention information. About the system.

  FIG. 2 is a diagram illustrating a conventional configuration example of a disaster prevention information communication system. As a conventional disaster prevention information communication system, as shown in FIG. 2, the disaster prevention information center 21 and terminals of each organization such as the municipality terminal 22, the fire department terminal 23, and the hospital terminal 24 are connected via the Internet 25, and communication is established through a TCP connection. Such a configuration is generally considered. However, if the communication line is congested during a disaster, the local government's disaster response headquarters may not be able to secure the communication line and may not be able to transmit emergency information.

On the other hand, a regional disaster prevention radio system that transmits and receives digital radio signals has been proposed so that control information of the center apparatus and the terminal apparatus can be reliably transmitted between the center apparatus that controls communication and a plurality of terminal apparatuses ( For example, see Patent Document 1). In this system, communication channels composed of combinations of frequency and time slots are divided into channel groups, and classified into individual users, common users, and high priority specific users, and line allocation is performed according to traffic and configuration conditions. In addition, the communication signals are classified into control information and mutual communication information to enable mutual communication, and the transmission speed is changed by changing the voice compression / decompression method selection depending on the traffic situation, and fewer lines are used. It enables multiple users to share the system.
JP 2001-69095 A

  In the above-mentioned conventional system, communication can be performed according to each phase at the time of disaster and non-disaster, immediately after disaster, at the time of information collection, and at the time of information reduction, so as to improve the utilization efficiency of the limited wireless line However, in the event of an emergency disaster, it is impossible to prevent a situation where even a local government disaster response headquarters cannot secure a communication line with a disaster response organization or the like due to communication infrastructure damage or communication line congestion. As a result, there arises a problem that appropriate information is not transmitted to the disaster response headquarters, making it difficult to respond quickly.

  The present invention solves the above-described problem, and can ensure an alternative communication line even when a normal communication line cannot be used in an emergency disaster, and reliably transmit disaster prevention information.

  For this purpose, the present invention establishes a connection between a terminal of each organization including a local government or a fire department and a center device of a disaster prevention information center serving as a hub for sharing information with respect to the terminal, and transmits disaster prevention information. A communication system comprising at least two or more communication lines connectable as communication lines for establishing communication between the terminals of the respective institutions and the center apparatus, and of the two or more communication lines One of the communication lines is established as a specific communication line to transmit information in a normal state, and other communication lines other than the specific communication line are connected as an alternative communication line for the specific communication line in an emergency disaster. It is characterized in that information is transmitted while maintaining an established state.

  The alternative communication line is connected with the transmission of the earthquake occurrence information, and the connection is established on the condition that the specific communication line becomes incapable of communication, or the connection of the specific communication line cannot be established. The alternative communication line is a telephone line connected via a modem, and the specific communication line is an Internet line.

  The center device acquires earthquake occurrence information from a communication satellite receiver to transmit the earthquake occurrence information to the terminals of the respective organizations during the emergency disaster, and the alternative communication according to the transmission of the earthquake occurrence information. In the normal time, the center device transmits a TCP packet to each terminal at regular intervals, so that when the terminal of each organization receives a communication confirmation packet, a transmission confirmation packet is transmitted. In the case of an emergency disaster, the terminal transmits only difference information with respect to information that has already been transmitted, and the center device adds the difference information to the received information and edits it. To do.

  According to the present invention, a communication line is not secured only at the time of an emergency disaster, but a communication line is secured from a normal time, and even if a normal communication line cannot be secured at an emergency disaster, the communication infrastructure is damaged. It is possible to secure automatic and manual lines in response. In addition, since the state where the connection of the alternative communication line is continuously established is maintained, there is no connection confirmation procedure each time information is transmitted, and the transmission of information in an emergency disaster can be speeded up without waste. Information transmission can be performed efficiently.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining an embodiment of a disaster prevention information communication system according to the present invention. In the figure, 1 is a center device, 2 is a communication satellite receiver, 3-1, 3-2,..., 3-n, 13 is a modem, 4 is a LAN card, 5 is the Internet, 11 is a terminal, and 12 is a built-in LAN. Ports 14, 15 are USB ports, 16 is a mobile phone, and 17 is a satellite phone.

  As shown in FIG. 1 (A), the center device 1 is arranged in a disaster prevention information center and serves as an information sharing hub for terminals 11 (plurality) of each organization such as a local government, a fire department, a hospital, and a shelter. Are connected to a telephone line via a plurality of modems 3-1, 3-2,..., 3-n, and connected to the Internet 5 via a LAN card 4. In addition, the center device 1 receives earthquake occurrence information including epicenter information such as the location of the epicenter, the seismic intensity, and the occurrence time from the communication satellite receiving unit 2, and in the event of an earthquake (emergency disaster), the local government The epicenter information is transmitted to the terminal 11 (plurality) of each organization.

  As shown in FIG. 1 (B), the terminal 11 arranged in each organization such as a local government, fire department, hospital, or shelter is connected to the Internet 5 via a built-in LAN port 12, and further via a modem 13. Alternatively, telephone lines are connected via the USB ports 14 and 15, the mobile phone 16, and the satellite phone 17, respectively. As described above, at least two or more connectable communication lines are established as communication lines for establishing communication between the center apparatus 1 and the terminal 11 of each organization such as a local government, fire department, hospital, or shelter. It establishes a communication line connection and transmits information during normal times and emergency disasters.

  With the above system configuration, in normal times, the center device 1 is connected to the terminal 11 of each institution such as a local government, a refuge, a fire department, or a hospital via the Internet 5 to establish communication through a TCP connection. It transmits to the terminal 11 of the institution. Upon receiving the communication confirmation packet, the terminal 11 of each organization transmits the reception confirmation packet to the center device 1 of the disaster prevention information center. As a result, the communication state is monitored, and when a reception confirmation packet cannot be received, an alarm indicating that communication is not possible is output to prevent the communication disabled state from being left unattended.

  In addition to the communication status check, information for confirming the status of each organization is transmitted from the terminal 11 of each organization to the center device 1 of the disaster prevention information center. For example, the local government terminal 11 serving as the disaster response headquarters transmits information such as the presence or absence of decision-makers such as disaster prevention officers, mayors, etc. from time to time. Similarly, the fire station terminal 11 dispatches fire engines, ambulances, etc. For example, the hospital terminal 11 transmits information such as the availability of a bed and the presence or absence of a doctor.

  When an earthquake occurs, the terminal 11 of each organization such as a local government receives the epicenter information from the center device 1 of the disaster prevention center, and transmits the latest information necessary for disaster prevention to the center device 1 of the immediate disaster prevention center. Thereafter, when the earthquake motion arrives and the Internet line is damaged, the terminal 11 is connected to the center device via the modem 13 or via the USB port 14, 15, the mobile phone 16, and the satellite phone 17 via the telephone line. Establish. In this way, the terminals 11 of each institution communicate in a communication environment that can be used after a disaster. Information sharing is performed by accessing a center device serving as an information hub and sharing information with each terminal 11. Enable.

  For example, when the disaster site and each evacuation institution communicate information to the local government, which is the disaster response headquarters, data related to the information is established between the disaster site and each evacuation site between the terminal 11 and the center device 1. Information is sent to the center device 1 through the communication line, and is transmitted to the disaster response headquarters through a communication line between the center device 1 and the terminal 11 of the local government which is the disaster response headquarters.

  When communication between the center apparatus 1 and the terminal 11 becomes impossible, the terminal 11 communicates with the center apparatus via the modem 13 or the telephone line via the USB port 14, 15, the mobile phone 16, or the satellite telephone 17. Establish a connection and secure an alternative communication line. In this case, priority may be given to the plurality of alternative communication lines, and the connections may be established in the priority order. However, in the event of an emergency disaster, simultaneous connection to a plurality of alternative communication lines is possible. It is also possible to attempt to establish the communication line and leave the communication line that has been initially connected in the connected state. By doing so, there is no handshake for establishing a communication line between the center apparatus 1 and the terminal 11 every time when it becomes necessary to transmit information. Can be omitted, speeding up information transmission, improving line utilization efficiency, communication efficiency, and information transmission efficiency.

  For the terminal 11 of each organization such as a local government, evacuation center, fire department, hospital, etc., the center device 1 has a terminal capable of always transmitting information while one alternative communication line is kept connected, and a plurality of alternative communication lines. Any one of them may be established and a terminal that transmits information may be set. In addition, for a terminal that can always transmit information while one alternative communication line is kept connected, regardless of whether or not the communication line that is normally used is incapable of communication, The terminal 11 may be controlled to establish an alternative communication line.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, in the above embodiment, a communication line connected to a telephone line via a modem or USB port and a mobile phone / satellite phone is used as an alternative communication line, but a PDA (personal digital assistant) or other device is used. A communication line may be secured as an alternative communication line.

  In addition, a communication line connected to the Internet via a LAN card is used as a specific communication line to establish a connection from normal, and information is transmitted between the center device and terminals of each organization. The communication line connected to the telephone line may be a specific communication line, or in short, as long as it has a plurality of communication lines and one of them is a specific communication line from a normal time to transmit information. Good.

  Furthermore, the terminal of each organization takes the difference between the transmitted information and the untransmitted information for the center device at the time of an emergency disaster, performs transmission information editing processing so that only the difference is sent to the center device, Information received and held from each organization may be updated based on the difference information.

It is a figure explaining embodiment of the disaster prevention information communication system which concerns on this invention. It is a figure which shows the conventional structural example of a disaster prevention information communication system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Center apparatus, 2 ... Communication satellite receiver, 3-1, 3-2-3-n, 13 ... Modem, 4 ... LAN card, 5 ... Internet, 11 ... Terminal, 12 ... Built-in LAN port, 14, 15 ... USB port, 16 ... mobile phone, 17 ... satellite phone

Claims (9)

A disaster prevention information communication system that establishes a connection between a terminal of each organization including a local government or a fire department and a center device of a disaster prevention information center that serves as a hub for information sharing with the terminal, and transmits disaster prevention information, At least two or more communication lines connectable as communication lines for establishing communication between the terminal of each organization and the center apparatus and performing communication, and specifying one of the two or more communication lines Establishing a connection as a communication line to transmit information in a normal state, and in a state where the communication line other than the specific communication line is established as an alternative communication line for the specific communication line in the event of an emergency disaster A disaster prevention information communication system characterized by holding and transmitting information. The disaster prevention information communication system according to claim 1, wherein the alternative communication line is connected with transmission of earthquake occurrence information. 2. The disaster prevention information communication system according to claim 1, wherein the alternative communication line is established on condition that the specific communication line becomes incapable of communication. 2. The disaster prevention information communication system according to claim 1, wherein the alternative communication line is established on condition that connection of the specific communication line cannot be established. 2. The disaster prevention information communication system according to claim 1, wherein the specific communication line is an Internet line. 2. The disaster prevention information communication system according to claim 1, wherein the alternative communication line is a telephone line connected via a modem. The center device acquires earthquake occurrence information from a communication satellite receiver to transmit the earthquake occurrence information to the terminals of the respective organizations during the emergency disaster, and the alternative communication according to the transmission of the earthquake occurrence information. The disaster prevention information communication system according to claim 1, wherein a line is secured. 2. In the normal state, the center apparatus transmits a TCP packet to each terminal at regular intervals, so that when the terminal of each organization receives a communication confirmation packet, the reception confirmation packet is transmitted. The disaster prevention information communication system described in 1. The said terminal transmits only the difference information with respect to the information already transmitted at the time of the said emergency disaster, The said center apparatus adds the information of difference to the received information, and edits it, The editing of Claim 1 characterized by the above-mentioned. Disaster prevention information communication system.

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