JP2006292663A - Portable urgent earthquake news flash network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem, wherein conventional earthquake observation is premised basically on fixed point observation, a margin time up to the arrival of main movement is fixed by earthquake occurring location, and it is not suitable for use in disaster prevention activity and rescue activity, in a region having a small margin of time or no margin of time. <P>SOLUTION: Urgent earthquake news flash distributed from the Japan Meteorological Agency 1 or the like is received with an urgent earthquake news flash distribution server via the real-time earthquake utilization assembly 2, and immediately the information is distributed by a satellite channel processing thunder information and weather information. Since the information, distributed by the satellite channel, is an earthquake source position and its magnitude, measured magnitude equivalent value and earthquake arrival time prediction are calculated by a small-sized terminal from the information. The information is transmitted to a portable terminal, possessed by outdoor workers with specific power radios and alarm is issued. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a system that collects real-time earthquake information and conveys the processing results of earthquake data after the occurrence of an earthquake and before the arrival of an earthquake wave in order to provide early warning of earthquakes or automatic disaster prevention measures.

  When there is an observation network of a certain scale, the initial tremor (P wave) of the earthquake is analyzed at one or more stations to estimate the source element (source location, source time, scale), and Technology to be used for earthquake disaster prevention as information before reaching the main movement has been developed.

Japanese Patent Application No. 2001-257765 Japanese Patent Application No. 2001-308218 Railway Research Institute Vol.19 No.3, pp1-12

  Conventional seismic observations are basically based on fixed-point observations, and the time to reach the main motion is fixed depending on where the earthquake occurs. Disaster prevention activities and rescue operations in the epicenter area where there is little or no time Not suitable for use in activities. In other words, when the fixed network maintenance conditions (observation point density, delay time) do not match the purpose of use (margin time, accuracy), or there is no fixed network in the first place, support disaster reduction or disaster prevention / rescue activities There is no system that can distribute earthquake early warnings for the purpose, and there is a problem that the use of earthquake early warnings is restricted.

  Moreover, it cannot be used in countries and regions where earthquake observation networks are not established. One of the requirements that make it impossible to use is the need for large funds to develop and maintain the observation network. The present invention proposes a portable emergency earthquake bulletin network system for solving these problems.

The present invention presents a method for solving these problems.
That is, the present invention as described in claim 1,
A portable earthquake early warning network system comprising a portable seismometer and a wireless LAN in the use of the earthquake early warning using the Internet and a dedicated line is configured.
Further, according to the present invention, as described in claim 2, in the use of the earthquake early warning using the Internet and a dedicated line, the portable earthquake meter and the emergency earthquake early warning via a distribution organization such as the Japan Meteorological Agency are provided. The portable emergency earthquake bulletin network system according to claim 1 is configured.

  The effect obtained by the portable emergency earthquake bulletin network system according to the present invention will be described for each claim.

In the first aspect of the invention, the use of a portable seismometer can contribute to ensuring the safety of rescue activities.
In the invention of claim 2, a more accurate emergency earthquake warning can be obtained by combining an emergency earthquake warning from the Japan Meteorological Agency obtained via the Internet and a portable emergency earthquake warning.

  Examples 1-2 are shown below.

  In the earthquake of magnitude M6.8 (maximum seismic intensity 6+) that occurred in the Chuetsu region of Niigata Prefecture on October 23, 2004, damage has occurred since the Great Hanshin-Awaji Earthquake. This is a typical direct earthquake, and it is said that emergency earthquake warning is not effective. The allowance time in Ojiya, where the actual damage was severe, was -2 seconds. That is, the emergency earthquake bulletin was sent 2 seconds after the arrival of the main earthquake motion (S wave). However, this should be improved by changing the conditions that determine the performance of earthquake early warning such as data transmission and observation point interval. If it becomes possible, for example, it will be possible to prevent the fire damage of hundreds of thousands of households predicted by the earthquake directly under the Tokyo metropolitan area (the northern part of Tokyo Bay, the damage is the largest case).

  FIG. 1 is a configuration diagram of a portable emergency earthquake bulletin network system according to the present invention. As shown in FIG. 1, the disaster site type earthquake early warning analysis device 21 inputs earthquake information from N portable seismometers 11a to 11n.

  The power sources of the portable seismographs 11a to 11n are built-in power sources including a fuel cell. The portable seismometers 11a to 11n are one-component or three-component strong motion meters. Data from the seismometer is transmitted by wireless LAN or satellite line.

  Since the information delivered by the satellite link is the location of the epicenter and its magnitude, this information is used to calculate the measured seismic intensity equivalent value and the earthquake arrival time prediction at the mobile terminal 23 for the disaster site. Then, the calculation result is transmitted to the rescuer portable terminal 24 by the specific low-power wireless LAN, and an alarm is issued. With this system, it is possible to know in advance the magnitude of the earthquake shake and the time to shake. By using the Earthquake Early Warning, you can contribute to the safety of rescue activities.

  In addition, this time is sufficient for automatic control, such as stopping the occurrence of fire, from the demonstration experiment of LPG (liquefied propane gas) shutoff system last year. Furthermore, 3,000m-class deep seismic observations are operated by the National Research Institute for Earth Science at 4 points directly below Tokyo. By utilizing this, a margin of about 4 to 5 seconds can be earned for about 2 seconds, and the use of emergency earthquake warnings can have a great effect on earthquake disaster prevention.

  FIG. 2 is an Internet configuration diagram of a portable emergency earthquake warning system. As shown in FIG. 2, the emergency earthquake bulletin delivered from the Japan Meteorological Agency 1 or the like is transmitted to the disaster site type emergency earthquake bulletin analyzer 21 via the distribution organization 2 (for example, the real-time earthquake utilization council) and the Internet 26. The disaster site type earthquake early warning analysis device 21 receives the earthquake early warning distribution server and immediately distributes the information through the satellite line 22 that handles lightning information and weather information.

In the following, as described in FIG. 1, the portable emergency earthquake bulletin network system operates.
Then, by combining the earthquake early warning of the Japan Meteorological Agency 1 and the like obtained from the Internet 26 described in FIG. 2 and the portable emergency earthquake early warning described in FIG. 1, a more accurate emergency earthquake early warning can be obtained.

  On the other hand, if interest in earthquake disaster prevention increases, seismometers will be installed in many places and facilities for earthquake resistance measures for buildings and public facilities. These seismic data can be used not only for specific purposes, but can also make a significant contribution to improving the accuracy and reliability of real-time earthquake information if used throughout the region. In the present invention, a business model having such a purpose is proposed.

  Collect, generate, and distribute real-time earthquake information, improve society's ability to prevent earthquakes, and contribute to creating a safe and secure society. Then, the distribution organization 2 collects real-time earthquake information transmitted from other organizations such as the country. In addition, seismometer data that is owned by other organizations and individuals and can be used to improve the accuracy of real-time earthquake information is collected. In addition, customized real-time earthquake information is distributed to customers and paid for.

For institutions and individuals that provide earthquake data, distribution will be made under preferential conditions and profits will be allocated according to contributions. Therefore, it is possible to maintain a safe and secure network in cooperation with a telecommunications carrier, and to perform distribution that is stable and matches the characteristics of information.
As described above, it is possible to obtain a more accurate earthquake early warning by combining the earthquake early warning of the Japan Meteorological Agency 1 and the like obtained via the Internet 26 and the portable emergency earthquake early warning.

  FIG. 3 is a configuration diagram of the collection analysis system. As shown in FIG. 3, the collection analysis system 50 uses the reception unit 52, the data collection unit 51 that operates according to the trigger in the net, and the bulletin 53 from another net or the trigger 54 from another observation data. Has a function to collect data.

  In addition, the analysis unit 55 aligns the collected data for each frame of a predetermined time width, and determines the epicenter parameter and its accuracy. Then, the transmission unit 56 transmits to the broadcast / net via the Internet 26. Further, the database 57 has functions of an analysis log and a transmission log.

  By using a bucket relay system for transmission, it is possible to transmit via a satellite if the communication infrastructure is complete. It is also conceivable to collect the data directly in the center station 58 by a transmission technique using a pseudo noise signal.

  As described above, the collection and analysis system enables accurate data processing of emergency earthquake warnings at disaster sites.

  Moreover, although the present Example 1 and 2 demonstrated the emergency earthquake bulletin, this invention is applicable not only to earthquake information but disaster prevention information, such as a landslide.

It is a block diagram of the portable emergency earthquake bulletin network system concerning this invention. It is an internet block diagram of a portable emergency earthquake warning system. It is a block diagram of a collection analysis system.

Explanation of symbols

1 Japan Meteorological Agency, etc. 2 Distribution organization (for example, Real-time Earthquake Use Council)
11a to 11n Portable seismometer 21 Disaster site type earthquake early warning analysis device 22 Satellite link 23 Mobile terminal 24 Vehicle rescue terminal 26 Internet 50 Collection analysis system 51 Data collection unit 52 Reception unit 53 Bulletin 54 from another network Trigger from other observation data 55 Analysis unit 56 Transmission unit 57 Database 58 Center station

Claims (2)

A portable earthquake early warning network system comprising a portable seismometer and a wireless LAN for use of earthquake early warning via the Internet and a dedicated line. 2. The portable earthquake early warning network system according to claim 1, further comprising: an emergency earthquake bulletin via the portable seismometer and a distribution agency such as the Japan Meteorological Agency in utilizing the earthquake early warning via the Internet and a dedicated line.

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