JP3963727B2 - Earthquake waveform data collection device and earthquake observation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to earthquake observation, and more particularly to a network system for earthquake observation.
[0002]
[Prior art]
In recent years, earthquake observation systems have been established in various local governments. This is aimed at establishing an initial response system in the event of an earthquake. This earthquake observation system collects and distributes seismic intensity information using a network when an earthquake occurs. Observation terminals are installed in each municipality of the local government. Since the observation terminal is equipped with an earthquake measuring instrument, it can acquire earthquake acceleration and seismic intensity (seismic intensity) data. A transmission / reception device is installed at the headquarters of the local government for the earthquake. When the observation terminal measures an earthquake having a specified seismic intensity or higher, the observation terminal transmits seismic intensity data of the earthquake to the transmission / reception device via a communication line. The transmission / reception device distributes the received seismic intensity data to various external facilities (for example, earthquake damage early evaluation system and fire department).
[0003]
[Problems to be solved by the invention]
An object of the present invention is to improve a conventional seismic observation system. Specifically, an object is to provide an earthquake observation system capable of collecting not only seismic intensity data but also seismic waveform data, and an earthquake waveform data collecting apparatus used in this system.
[0004]
[Means for Solving the Problems]
The seismic waveform data collection device according to the present invention is used in an earthquake observation system. This earthquake observation system Measure earthquake acceleration data and waveform data One or more observation terminals each having an earthquake measuring instrument are provided. When an earthquake occurs, each observation terminal acquires waveform data and acceleration data of the earthquake. The seismic waveform data collection device of the present invention automatically responds to an instruction from the user or automatically reaches the observation terminal when a predetermined time is reached. Of acceleration data and waveform data, Request acceleration data. Thereafter, acceleration data is received from the observation terminal, and it is determined whether or not the acceleration data satisfies a predetermined collection condition. The current time is included in the designated time zone for receiving waveform data, and When it is determined that the acceleration data satisfies the collection condition, the observation terminal is requested for earthquake waveform data corresponding to the acceleration data. Thereafter, the waveform data is received from the observation terminal and stored.
[0005]
Moreover, the seismic waveform data collection device of the present invention may include an input means. In this case, the user can operate the input means to instruct the earthquake waveform data collection apparatus of the present invention to request acceleration data from the observation terminal. The user may be able to set the collection conditions and the waveform data collection time zone by operating the input means.
[0006]
The earthquake observation system according to the present invention includes one or more observation terminals and an earthquake waveform data collection device that can communicate with each observation terminal. Each observation terminal Measure earthquake acceleration data and waveform data Has a seismic instrument. When an earthquake occurs, the observation terminal acquires waveform data and acceleration data of the earthquake. The seismic waveform data collection device automatically responds to instructions from the user or automatically reaches the observation terminal when a predetermined time is reached. Of acceleration data and waveform data, Request acceleration data. In response to this request, the observation terminal transmits acceleration data to the seismic waveform data collection device. The earthquake waveform data collection device receives acceleration data from the observation terminal and determines whether the acceleration data satisfies a predetermined collection condition. Earthquake waveform data collection device The current time is included in the designated time zone for receiving waveform data, and When it is determined that the acceleration data satisfies the collection condition, the observation terminal is requested for earthquake waveform data corresponding to the acceleration data. In response to this request, the observation terminal transmits waveform data to the seismic waveform data collection device. The seismic waveform data collection device receives and stores the waveform data.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
[0008]
The seismic observation system of this embodiment is constructed using an existing seismic intensity information network system. The existing seismic intensity information network system does not collect seismic waveform data for the purpose of establishing the initial action system in the event of an earthquake. However, facilities such as universities that conduct earthquake / eruption prediction research (hereinafter referred to as “research facilities”) require not only seismic intensity data but also waveform data as research data. Therefore, in this embodiment, an earthquake observation system capable of collecting earthquake waveform data is constructed by adding an earthquake waveform data collection device to the seismic intensity information network system.
[0009]
FIG. 1 shows the configuration of the earthquake observation system 1 of the present embodiment. The earthquake observation system 1 mainly includes a plurality of observation terminals 2, a communication network 3, a transmission / reception device 4, an epicenter information management device 5, and a research facility 6. The observation terminal 2 measures an earthquake and acquires various earthquake information. The transmission / reception device 4 communicates with the observation terminal 2 via the communication line 3 and receives information on seismic intensity. The transmission / reception device 4 can distribute this seismic intensity information to an external facility. The epicenter information management device 5 communicates with the observation terminal 2 via the communication network 3 to acquire seismic information and identify the epicenter. The research facility 6 communicates with the observation terminal 2 via the communication network 3 and collects seismic waveform data. In the present embodiment, a multiple line network is used as the communication line network 3. However, it is not limited to this line network.
[0010]
The observation terminal 2 is installed in various municipalities of one local government. The observation terminal 2 is a measurement seismometer, and includes a measurement unit 10 that measures earthquake motion and a processing unit 11 that processes measurement data acquired by the measurement unit 10. The observation terminal 2 is installed in a seismometer room, for example. The processing unit 11 includes a communication interface with an external device. Therefore, the processing unit 11 can communicate with the transmission / reception device 4, the epicenter information management device 5, and the research facility 6 via the communication line network 3.
[0011]
The transmission / reception device 4 is used in an existing seismic intensity information network system. The transmission / reception device 4 receives earthquake acceleration data and seismic intensity data from the observation terminal 2 via the communication line network 3, and distributes these data to various external facilities. The transmission / reception device 4 is provided, for example, in a central facility that centrally manages information on seismic intensity.
[0012]
The transmission / reception device 4 is a single computer, and includes a communication unit 21, a control processing unit 22, and a storage unit 23. The communication unit 21 communicates with the observation terminal 2 and an external facility (not shown) under the control of the control processing unit 22. The communication unit 21 is provided with a modem for connection to the communication line network 3. The transmission / reception device 4 can receive earthquake acceleration data and seismic intensity data from the observation terminal 2 using this modem. However, the transmission / reception device 4 does not receive earthquake waveform data. The communication unit 21 is also provided with a LAN adapter for connection with an external facility. The transmission / reception device 4 can communicate with an external facility using the LAN adapter and a router (not shown). The control processing unit 22 controls the overall operation of the transmission / reception device 4 and processes data received by the communication unit 21. The storage unit 23 stores data under the control of the control processing unit 22.
[0013]
The epicenter information management device 5 centralizes and manages seismic center information. This is installed, for example, in the Japan Meteorological Agency. The epicenter information management device 5 communicates with the observation terminal 2 via the communication network 3 and collects earthquake data. The epicenter information management device 5 performs calculations using the seismic data to identify the epicenter. The epicenter information management device 5 stores the epicenter information thus obtained.
[0014]
The research facility 6 includes an earthquake waveform data collection device 30 and one or more terminal devices 40 connected thereto. The seismic waveform data collection device 30 can communicate with the observation terminal 2 and the epicenter information management device 5 via the communication network 3. The seismic waveform data collection device 30 collects seismic waveform data from the observation terminal 2 and enables secondary use of the seismic waveform data. Further, the seismic waveform data collection device 30 receives the epicenter information from the epicenter information management device 5 through the communication network 3. The earthquake waveform data collection device 60 creates common earthquake data using the various earthquake information received in this way. The common earthquake data has a format that can be used in common by each terminal device 40. The researcher can access the common earthquake data by operating the terminal device 40. The common earthquake data can also be downloaded from the earthquake waveform data collection device 30 to the terminal device 40.
[0015]
The seismic waveform data collection device 30 includes a modem unit 31, an operation unit 32, a display unit 33, a LAN connection unit 34, and a control unit 35. The seismic waveform data collection device 30 may be a computer system in which a control program is installed.
[0016]
The modem unit 31 communicates with the observation terminal 2 and the epicenter information management device 5 via the communication network 3. Specifically, a request signal for seismic intensity information and seismic waveform data is transmitted to the observation terminal 2, and seismic intensity information and seismic waveform data are received from the observation terminal 2. Also, a request signal for the epicenter information is transmitted to the epicenter information management device 5 and the epicenter information is received from the epicenter information management device 5.
[0017]
The operation unit 32 is an input device for operating the earthquake waveform data collection device 30. The user can input operation instructions and data to the seismic waveform data collection device 30 by operating the operation unit 32. The operation unit 32 is provided with a keyboard and a mouse.
[0018]
The display unit 33 displays setting information and operation status of the seismic waveform data collection device 30. The display unit 33 is, for example, a CRT display or a liquid crystal display.
[0019]
The LAN connection unit 34 connects the seismic waveform data collection device 30 and the terminal device 40 via a local area network (LAN). The LAN connection unit 34 includes a LAN adapter. This LAN adapter is connected to a switching hub (not shown) via a LAN cable. A LAN adapter provided in the terminal device 40 is also connected to the switching hub via a LAN cable. Thereby, the earthquake waveform data collection device 30 and the terminal device 40 are LAN-connected.
[0020]
The control unit 35 controls the overall operation of the seismic waveform data collection device 30. Further, the control unit 35 processes the earthquake data transmitted from the observation terminal 2 and the epicenter information management device 5. The control unit 35 is a computer including a CPU (Central Processing Control Device) and a storage device. A control program is installed in the storage device. The control unit 35 operates according to this control program. The control unit 35 also includes an interface with each of the modem unit 31, the operation unit 32, the display unit 33, and the LAN connection unit 34.
[0021]
FIG. 2 is a functional block diagram of the control unit 35. The control unit 35 has functions as setting control means 71, observation terminal means 72, storage management means 73, data conversion means 74, and main control means 75. Each of these means is embodied by a CPU and a storage device.
[0022]
The setting control unit 71 processes setting information input by the user via the operation unit 32 and reflects the setting information on the display on the display unit 33. The counter-observation terminal means 72 controls the operation of the modem unit 31 and thereby controls communication with the observation terminal 2. The observation terminal means 72 collects seismic intensity information and earthquake waveform data from the observation terminal 2. The storage management means 73 stores various earthquake information (including earthquake waveform data) and management information. In addition, the storage management unit 73 registers, searches, and updates these pieces of information. The data conversion means 74 controls the operation of the modem unit 31 and thereby controls communication with the epicenter information management device 5. The data conversion means 74 collects earthquake source information from the earthquake source information management device 5. The data conversion means 74 creates common earthquake data using seismic intensity information, earthquake waveform data, and epicenter information. In addition, the data conversion unit 74 controls the operation of the LAN connection unit 34, thereby controlling communication with the terminal device 40. The data conversion means 74 can transmit common earthquake data to the terminal device 40 via the LAN. The main control means 75 performs calculation processing of earthquake information and determination using earthquake information.
[0023]
Below, operation | movement of the earthquake observation system 1 is demonstrated in detail, referring FIGS. 3-11. Here, FIGS. 3 to 7 are flowcharts showing the flow of various processes in the earthquake observation system 1. 8-11 has shown the screen displayed on the display part 33 of an earthquake waveform data collection device.
[0024]
First, FIG. 3 will be described. FIG. 3 shows the flow of processing executed by the observation terminal 2, the epicenter information management device 5, and the seismic waveform data collection device 30, respectively.
[0025]
Each observation terminal 2 stands by for the occurrence of an earthquake (steps S102 and S104). When an earthquake occurs (step S104: YES route), the measurement unit 10 measures the earthquake and acquires measurement data (step S106). This measurement data includes earthquake waveform data. Next, the processing unit 11 processes the measurement data and extracts seismic intensity information (step S108). The seismic intensity information here is the same as that distributed by the existing seismic intensity information network system, and includes the earthquake occurrence time, seismic acceleration, and seismic intensity scale (seismic intensity). The seismic waveform data and the extracted seismic intensity information are stored in the storage device in the processing unit 11 (step S110). Although not shown in FIG. 3, transmission of seismic intensity information to the transmission / reception device 4 and the epicenter information management device 5 and printing of seismic waveform data are also performed. After storing the earthquake information, the processing unit 11 of the observation terminal 2 determines whether or not the seismic intensity request information has been received from the earthquake waveform data collection device 30 (step S112).
[0026]
The epicenter information management device 5 also waits for the occurrence of an earthquake (steps S202 and S204). When an earthquake occurs (step S204: YES route), the epicenter information management device 5 executes an epicenter identification process (step S206). In this process, the epicenter information management device 5 receives seismic intensity information from one or more observation terminals 2, and calculates the seismic intensity information to identify the epicenter. The epicenter information management device 5 stores the identified epicenter information in association with the seismic intensity information. Thereafter, the epicenter information management device 5 determines whether or not the epicenter request information has been received from the seismic waveform data collection device 30 (step S208).
[0027]
Below, before demonstrating the process after step S112 by the observation terminal 2, and the process after step S208 by the epicenter information management apparatus 5, the process which the earthquake waveform data collection apparatus 30 performs is demonstrated.
[0028]
First, the seismic waveform data collection device 30 displays a basic screen on the display unit 33 under the control of the control unit 35 (step S302). FIG. 8 shows an example of the basic screen. The basic screen displays the waveform data collection status, the operation status of the seismic waveform data collection device 30, the waveform data collection time zone, the collection conditions, and the like.
[0029]
A collection status field 102 is provided on the left side of the basic screen. As will be described later, the collection status column 102 displays character information representing the waveform data collection status.
[0030]
In the upper right part of the basic screen, a date display area 104 and an operation status column 106 are provided. The date and time display area 104 displays the current date and time. In the operation status column 106, character information indicating the operation status of the seismic waveform data collection device 30 (for example, “system in operation”, “waveform data collecting ...”) is displayed.
[0031]
In the lower right part of the basic screen, a set value field 108, a seismic intensity information acquisition button 109, and a system stop button 110 are provided. Hereinafter, these display objects will be sequentially described.
[0032]
In the setting value column 108, the collection start time, collection end time, and collection acceleration level of earthquake waveform data are displayed. These values can be set by the user. As will be described later, the earthquake waveform data collection device 30 collects earthquake waveform data that satisfies the “collection acceleration level” condition at the collection start time, and stops collecting waveform data at the collection end time. A setting value change button 112 is provided below the setting value column 108. When the setting change button 112 is pressed by operating the operation unit 32, a setting value change screen is displayed.
[0033]
FIG. 9 shows a setting value change screen. The user can set the waveform data collection start time, collection time, and collection acceleration level via the set value change screen. The setting value change screen is provided with a collection time setting field 202 and a collection level setting field 204. In the collection time setting column 202, columns 202a and 202b for entering the collection start time and the collection time are provided. In these fields, numerical values can be entered by operating the operation unit 32. The collection level setting column 204 is provided with a column 204a for entering an acceleration serving as a reference value for whether to collect waveform data, and check columns 204b, 204c and 204d for setting a range of acceleration to be collected. . A numerical value can be entered in the acceleration entry column 204a by operating the operation unit 32. Further, by operating the operation unit 32, it is possible to check any of the check columns 204b, 204c, or 204d. If the acceleration is entered and any one of the check boxes “all”, “above” and “less than” is checked, the condition for collecting the seismic waveform data (that is, “collected acceleration level” in FIG. 8) is determined. A setting button 208 and a return button 210 are provided at the bottom of the setting value change screen. When the setting button 208 is pressed by operating the operation unit 32, the setting value is updated to the content displayed on the setting change screen. Further, the screen displayed on the display unit 33 changes from the setting value change screen to the basic screen. At this time, the setting value displayed on the basic screen is also updated. On the other hand, when the return button 210 is pressed by operating the operation unit 32, the display returns to the basic screen without updating the set value.
[0034]
Reference is again made to FIG. The seismic intensity information acquisition button 109 is an operation button for manually collecting seismic intensity information from the observation terminal 2. When the setting button 109 is pressed by operating the operation unit 32, a seismic intensity information collection screen is displayed on the display unit 33.
[0035]
FIG. 10 shows an example of the seismic intensity information collection screen. The user can manually collect seismic intensity information from the desired observation terminal 2 via the seismic intensity information collection screen. The seismic intensity information collection screen is provided with a terminal display window 302, an all select / cancel button 304, a collection start button 306, and a return button 308. The terminal display window 302 lists the names of municipalities in which the observation terminals 2 are installed. The user can select a desired city name by operating the operation unit 32. When the all select / cancel button 304 is pressed, all city names are selected, and when the all select / cancel button 304 is pressed again, all selections are cancelled. When the collection start button 306 is pressed, collection of seismic intensity information is started from the observation terminal 2 installed in the selected municipality. When the return button 308 is pressed, the screen displayed on the display unit 33 is changed from the seismic intensity information collection screen to the basic screen.
[0036]
Reference is again made to FIG. The system stop button 110 is an operation button for stopping the collection of waveform data. When the system stop button 110 is pressed, the seismic waveform data collection device 30 no longer collects waveform data. If the system stop button 110 is pressed during the collection of waveform data, the seismic waveform data collection device 30 stops collecting subsequent waveform data after completing the collection of the current waveform data. When the system stop button 110 is pressed again, the seismic waveform data collection device 30 collects waveform data again.
[0037]
Please refer to FIG. 3 again. After displaying the basic screen, the seismic waveform data collection device 30 performs seismic intensity information processing (step S304). FIG. 4 is a flowchart showing details of seismic intensity information processing. Hereinafter, seismic intensity information processing will be described with reference to FIG.
[0038]
In the seismic intensity information processing, the seismic waveform data collection device 30 collects seismic intensity information from the observation terminal 2 when the condition is satisfied. Seismic intensity information may be collected manually or automatically.
[0039]
First, a case where seismic intensity information is manually collected (step S402: YES route) will be described. In this case, the seismic waveform data collection device 30 sets the collection destination observation terminal 2 in accordance with an instruction from the user (step S403). This setting is performed via the seismic intensity information collection screen of FIG. When the user selects the collection destination observation terminal 2 and presses the collection start button 306, collection of seismic intensity information from the selected observation terminal 2 is started. At this time, the paired observation terminal means 72 controls the modem unit 31 to transmit seismic intensity request information to the observation terminal 2 (step S408).
[0040]
Please refer to FIG. 3 again. When the seismic intensity request information is received (step S112: YES route), the processing unit 11 of the observation terminal 2 confirms the presence / absence of untransmitted seismic intensity information, and if there is untransmitted seismic intensity information, the seismic waveform data collection device (Step S114). At this time, the observation terminal 2 also transmits terminal identification information. This terminal identification information may be an identification number (ID) assigned in advance to each observation terminal 2 or location information of the observation terminal 2.
[0041]
Reference is again made to FIG. The modem unit 31 receives seismic intensity information from the observation terminal 2 (step S410). This seismic intensity information is stored in the storage management means 73 (step S412). Terminal identification information transmitted from the observation terminal 2 together with the seismic intensity information is also stored in the storage management means 73. At this time, seismic intensity information and terminal identification information are associated with each other to form one data set.
[0042]
Next, the main control means 75 determines whether or not the received seismic intensity information satisfies a preset collection condition (step S414). As will be described later, the seismic waveform data collection device 30 collects waveform data only for earthquakes that satisfy a predetermined condition, rather than unconditionally collecting the waveform data of earthquakes for which seismic intensity information has been acquired. This collection condition is determined based on the earthquake acceleration. The collection condition in the present embodiment is the “collection acceleration level” described above, and can be set by the user.
[0043]
As shown in FIG. 9, the collection conditions can be set in three ways. First, acceleration data included in seismic intensity information is greater than or equal to a set acceleration value, second, acceleration data included in seismic intensity information is less than a set acceleration value, and third, Collect waveform data for all earthquakes that acquired seismic intensity information. The “acceleration value” used in the present embodiment is a composite acceleration of three components.
[0044]
If it is determined that the seismic intensity information satisfies the collection condition (YES route of step S414), the storage management means 73 stores the collection instruction information in association with the seismic intensity information (step S416). This collection instruction information is data for notifying each means of the control unit 35 that earthquake waveform data should be collected. As will be described later, the control unit 35 collects waveform data only for earthquakes whose collection instruction information is associated with seismic intensity information. The collection instruction information may be, for example, a flag in a specific state attached to the seismic intensity information and terminal identification information data set. In other words, a flag is added when storing the data set, and when the collection condition is satisfied, the state of the flag is changed from the initial state (for example, the flag is turned on) to store the collection instruction information. Also good. The collection instruction information in this case is a flag that has been changed from the initial state (for example, an on-state flag).
[0045]
When the storage of the collection instruction information (step S416) is completed or it is determined that the collection conditions are not satisfied (step S414: NO route), the seismic intensity information processing ends.
[0046]
Next, a case where seismic intensity information is automatically collected will be described. When the seismic intensity information is not collected manually (step S402: NO route), the main control means 75 determines whether or not the seismic intensity information is automatically collected (step S404). The automatic collection of seismic intensity information is executed every preset number of days. Data indicating the collection date and time of seismic intensity information is stored in the storage management means 73. The main control means 75 accesses the current date information and the collection date information stored in the storage management means 73, and determines whether the current date has reached the collection date. When the main control means 75 determines that the current date and time has reached the collection date and time, it starts collecting seismic intensity information. At this time, the paired observation terminal means 72 controls the modem unit 31 to transmit seismic intensity request information to the observation terminal 2 (step S408). Thereafter, the processing after step S410 is executed. Since these processes are as described above, a description thereof will be omitted. On the other hand, if it is determined that the current date / time has not reached the collection date / time (step S404: NO route), the seismic intensity information processing ends.
[0047]
Refer to FIG. 3 again. When the seismic intensity information processing (step S304) ends, the seismic waveform data collection device 30 determines whether or not the current time is included in a predetermined collection time zone (step S306). Here, the “collection time zone” is a time zone from the collection start time to the collection end time displayed in the set value column 108 of the basic screen (FIG. 8). The main control means 75 accesses the current time information, the collection start time information, and the collection time information stored in the storage management means 73, and performs the determination in step S306.
[0048]
When it is determined that the current time is included in the collection time zone (step S306: YES route), the seismic waveform data collection device 30 executes a waveform data collection process (step S308). FIG. 5 is a flowchart showing the flow of waveform data collection processing. Hereinafter, the waveform data collection process will be described in detail with reference to FIG.
[0049]
First, the setting control means 71 displays the characters “While collecting waveform data ...” in the operation status field 106 of the basic screen (step S502). Next, the main control means 75 confirms the presence / absence of collection instruction information in the storage management means 73 (step S504). When the collection instruction information is not stored in the storage management means 73 (step S504: NO route), the seismic waveform data is not collected. In this case, the setting control means 71 changes the character in the operation status column 106 of the basic screen from “While collecting waveform data ...” to “System in operation” (step S516). On the other hand, when the collection instruction information is stored in the storage management means 73 (step S504: YES route), the anti-observation terminal means 72 controls the modem unit 31 to transmit the waveform request information to the observation terminal 2 ( Step S506). The requested observation terminal 2 is specified by terminal identification information associated with the collection instruction information. The waveform request information includes information (for example, earthquake occurrence time) that identifies an earthquake. The seismic waveform data collection device 30 requests the seismic waveform data from the observation terminal 2 in this way.
[0050]
Reference is now made again to FIG. When the observation terminal 2 receives the waveform request information (step S116: YES route), the observation terminal 2 transmits the earthquake waveform data specified by the waveform request information to the earthquake waveform data collection device 30 (step S118). When the transmission of the waveform data ends, the process returns to step S102. Even when the waveform request information is not received (step S116: NO route), the process returns to step S102.
[0051]
Refer to FIG. 5 again. The waveform data transmitted from the observation terminal 2 is received by the modem unit 31 (step S508). The setting control means 71 displays characters for notifying the collection status in the collection status column 102 of the basic screen according to the waveform data reception status (step S510).
[0052]
FIG. 11 shows an example of a basic screen displayed during the waveform data collection process. As shown in this figure, when the reception of the waveform data starts, the setting control means 71 displays the characters “waveform data collection start” in the collection status column 102. In addition, the date and time when reception started and the installation location (for example, the name of the municipality) of the observation terminal 2 are also displayed. The information on the installation location is transmitted by the observation terminal 2 together with the waveform data. When the reception of the waveform data is completed, the setting control means 71 displays the characters “waveform data collection complete” in the collection status column 102. In addition, the date and time of completion of reception and the setting location of the observation terminal 2 are also displayed.
[0053]
The data conversion means 74 converts the received waveform data into a predetermined format (step S511). This is a process necessary for creating common earthquake data, which will be described later. The waveform data that has undergone format conversion can be used in common by all the terminal devices 40.
[0054]
The waveform data after the format conversion is stored in the storage management means 73 (step S512). At this time, the waveform data is stored in association with seismic intensity information and terminal identification information of the same earthquake. In addition, the collected information is stored in the storage management unit 73 in association with the seismic intensity information and the terminal identification information. The collected information may be, for example, a flag in a specific state. One earthquake waveform data file is managed with the observation point (installation location of the observation terminal 2) and observation time (earthquake occurrence time) of the earthquake as an index.
[0055]
Next, the main control means 75 determines whether or not all the collection instruction information has been processed (step S514). The main control means 75 confirms the presence / absence of seismic intensity information with the collection instruction information but without the collected information. When such seismic intensity information remains, it is determined that there is unprocessed collection instruction information (step S514: NO route). In this case, the main control means 76 determines whether or not the current time is included in the collection time zone (step S515). If it is determined that the current time is included in the collection time zone (step S515: YES route), the process returns to step S506, and the process from step S506 to step S514 is executed for another collection instruction information. . In this way, during the collection time period, the collection of waveform data is repeated until all the collection instruction information is processed. When the collected information is attached to all the seismic intensity information accompanied by the collection instruction information, it is determined that all the collection instruction information has been processed (step S514: NO route). In this case, the setting control means 71 changes the character “While collecting waveform data ...” in the operation status field 106 of the basic screen to “system in operation” (step S516). Thereby, the waveform data collection process is completed. Even when it is determined in step S515 that the current time is not included in the collection time zone (step S515: NO route), the characters “system in operation” are displayed (step S516), and the waveform data collection process is completed. . In this case, unprocessed collection instruction information is processed in the next collection time zone.
[0056]
In the present embodiment, if an earthquake occurs during the collection of waveform data, the waveform data collection process may be interrupted. When the processing unit 11 of the observation terminal 2 is transmitting waveform data and the measurement unit 10 of the same observation terminal 2 detects an earthquake motion, the observation terminal 2 interrupts the transmission of the waveform data and acquires the earthquake information. Processing and storage are performed (steps S106 to S110). As a result, even when an earthquake occurs during transmission of waveform data, the observation terminal 2 does not miss the earthquake.
[0057]
Specifically, when the measurement unit 10 detects an earthquake motion during transmission of waveform data, the processing unit 11 forcibly stops transmission of waveform data. This is because the seismic intensity information is transmitted to the transmission / reception device 4 so that the occurrence of the earthquake can be reported quickly.
[0058]
When the seismic waveform data collection device 30 detects the interruption of the reception of the waveform data, it executes an interrupt process. FIG. 6 is a flowchart showing the flow of this interrupt process. Hereinafter, this interrupt processing will be described with reference to FIG.
[0059]
When the observation terminal means 72 detects that the transmission of the waveform data from the observation terminal 2 to the modem unit 31 has been interrupted, the setting control means 71 displays the characters “line disconnection” in the collection status column 102 of the basic screen. (Step S602). This character is displayed on the right side of a character (such as a city name) indicating the installation location of the observation terminal 2. As a result, the user is notified of the interruption of waveform data reception.
[0060]
Next, the seismic waveform data collection device 30 repeatedly transmits the waveform request information to the observation terminal 2 at a predetermined time interval until the waveform data is received again from the observation terminal 2 that interrupted the transmission of the waveform data ( Steps S604 to S612). Hereinafter, this process will be described in detail.
[0061]
First, the pair observation terminal means 72 controls the modem unit 31 to transmit waveform request information to the observation terminal 2 (step S604). Next, the main control means 75 determines whether or not the current time is included in the collection time zone (step S606). If it is determined that the current time is not included in the collection time zone (step S606: NO route), the process proceeds to step S516 (FIG. 5) of the waveform data collection process. The characters “System in operation” are displayed in the operation status field 106 of the basic screen, and the waveform data collection process is completed. In this case, reception of the interrupted waveform data is carried forward to the next collection time zone.
[0062]
On the other hand, if it is determined that the current time is included in the collection time zone (step S606: YES route), the anti-observation terminal means 72 determines whether or not the modem unit 31 has received waveform data from the observation terminal 2. Is confirmed (step S608). When the observation terminal 2 receives the waveform request information from the earthquake waveform data collection device 30 after a predetermined time has elapsed since the completion of the acquisition, processing, and storage of the earthquake information, the observation terminal 2 obtains the waveform data of the earthquake specified by the waveform request information. It transmits again to the seismic waveform data collection device 30. When the modem unit 31 is receiving waveform data (step S608: YES route), the reception is continued, while the setting control means 71 displays “Waveform data collection start” in the collection status column 102 of the basic screen. Characters are displayed (step S610). As a result, the reception of the waveform data is restarted and the restart is notified to the user.
[0063]
If the modem unit 31 has not received waveform data (step S608: NO route), the main control means 75 determines whether or not the number of waveform request information transmissions has reached a predetermined number of retries (step S612). . When it is determined that the number of retries has not been reached (step S612: NO route), the waveform request information is transmitted to the observation terminal 2 again. On the other hand, if it is determined that the number of transmissions has reached the number of retries (step S612: YES route), the process proceeds to step S514 (FIG. 5) of the waveform data collection process. In this case, re-reception of waveform data is given up. Reception of the interrupted waveform data is carried forward to the next collection time zone.
[0064]
As described above, the seismic waveform data collection device 30 repeats the transmission of the waveform request information until the waveform data is received again or the number of transmissions reaches the number of retries. However, the repeated transmission of the waveform request information is limited during the collection time period.
[0065]
Refer to FIG. 3 again. When the waveform data collection process (step S308) is completed, the seismic waveform data collection apparatus 30 determines whether or not the current time has reached a predetermined data processing date (step S310). This determination is also made when it is determined in step S306 that the current time is not included in the collection time zone. The data processing date and time is set in advance every predetermined number of days. Data processing date / time information is stored in the storage management means 73. The main control means 75 accesses the current time information and data processing date / time information stored in the storage management means 73, and performs the determination in step S310.
[0066]
If it is determined that the current time has reached the data processing date and time (step S310: YES route), the seismic waveform data collection device 30 executes common earthquake data processing (step S312). In the common earthquake data processing, the earthquake information is collected from the earthquake information management device 5, and common earthquake data including this earthquake information and already collected seismic intensity information and waveform data is created. FIG. 7 is a flowchart showing the flow of common earthquake data processing. Hereinafter, the common earthquake data processing will be described in detail with reference to FIG.
[0067]
First, the seismic waveform data collection device 30 transmits the epicenter request information to the epicenter information management device 5 (step S702). The hypocenter request information includes information (for example, earthquake occurrence time) that identifies each earthquake from which the waveform data is acquired. The data conversion means 74 controls the modem unit 31 to transmit the epicenter request information to the epicenter information management device 5.
[0068]
Reference is now made again to FIG. When receiving the hypocenter request information (step S208: YES route), the hypocenter information management device 5 transmits the seismic source information of each earthquake specified by the hypocenter request information to the seismic waveform data collection device 30 (step S210). When the transmission of the epicenter information is completed, the process returns to step S202. Even when the hypocenter request information is not received (step S208: NO route), the process returns to step S202.
[0069]
Refer to FIG. 7 again. The epicenter information from the epicenter information management device 5 is received by the modem unit 31 and sent to the data conversion means 74 (step S704). Next, the data conversion means 74 creates common earthquake data by using the received earthquake source information and the seismic intensity information and waveform data stored in the storage management means 73 (step S706). The common earthquake data has a format that can be commonly used by all the terminal devices 40. The common earthquake data includes earthquake occurrence time, seismic intensity information, epicenter information, and seismic waveform data. The created common earthquake data is stored in the storage management means 73 (step S708).
[0070]
Each terminal device 40 can access the common earthquake data via the LAN. Therefore, each terminal device 40 can study earthquakes using various earthquake information including waveform data. The terminal device 40 can also download common earthquake data from the earthquake waveform data collection device 30. The earthquake data request signal from the terminal device 40 is transmitted to the LAN connection unit 34 via the LAN. The earthquake data request signal is sent from the LAN connection unit 34 to the data conversion means 74. In response to the earthquake data request signal, the data conversion unit 74 reads the common earthquake data from the storage management unit 73 and transmits it to the terminal device 40 that has transmitted the earthquake data request signal. In this way, the common earthquake data is downloaded to the terminal device 40.
[0071]
The terminal device 40 can directly access not only the common earthquake data but also individual waveform data. Therefore, the terminal device 40 can use the waveform data without waiting for the creation of the common earthquake data.
[0072]
Below, the effect of the earthquake observation system 1 of this embodiment is demonstrated.
[0073]
First, seismic waveform data can be collected from observation terminals 2 installed at various locations. The conventional seismic observation system cannot collect the seismic waveform data even though the observation terminal 2 acquires the seismic waveform data. The present inventors have overcome the difficulties associated with the collection of waveform data and have realized an earthquake observation system that can collect not only seismic intensity information but also waveform data.
[0074]
Second, the earthquake observation system 1 is relatively easy to construct. If the seismic waveform data collection device 30 is installed in an existing seismic observation system, the seismic observation system 1 of this embodiment can be constructed.
[0075]
Third, it is possible to collect waveform data that meets various research objectives. This is because the user can set the earthquake acceleration range (collection acceleration level described above) for collecting waveform data.
[0076]
Fourth, collection of waveform data can be performed automatically at a time zone set by the user, or can be manually performed at a desired time. Therefore, waveform data can be collected flexibly according to the situation.
[0077]
Fifth, the observation terminal 2 does not fail to measure the earthquake even when an earthquake occurs during transmission of the waveform data to the earthquake waveform data collection device 30. This is because the observation terminal 2 suspends the transmission of the waveform data and measures the earthquake when an earthquake occurs during the transmission of the waveform data.
[0078]
Sixth, a researcher who operates the terminal device 40 can smoothly perform earthquake research using waveform data. The waveform data is stored in the earthquake waveform data collection device 30 as a part of the common earthquake data having a format that can be commonly used by the terminal device 40. Researchers can use any terminal to access waveform data and use it for research. As a result, earthquake research using waveform data can be carried out smoothly by multiple researchers.
[0079]
Seventh, researchers can conduct seismic research using source information along with waveform data. This is because the common earthquake data includes the epicenter information received by the seismic waveform data collection device 30.
[0080]
The present invention has been specifically described above based on the embodiment. However, the present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the gist thereof. For example, each of the above processes can be executed in any order as long as the effects of the present invention can be achieved.
[0081]
In the above embodiment, the epicenter information management device 5 performs the calculation for identifying the epicenter by itself using the seismic intensity information acquired from the observation terminal 2. However, instead of such an epicenter information management apparatus 5, an epicenter information management apparatus that receives and stores the epicenter information acquired by the observation terminal 2 or other external devices may be used.
[0082]
In the above embodiment, the plurality of terminal devices 40 are connected to the seismic waveform data collection device 30 via the LAN. However, the seismic waveform data collection device 30 and the terminal device 40 may be connected via a network other than the LAN. For example, terminal devices in various research facilities may be connected to one seismic waveform data collection device via the Internet or the like. In this way, the common earthquake data generated by the seismic waveform data collection device can be shared among a plurality of research facilities.
[0083]
【The invention's effect】
According to the present invention, seismic waveform data can be collected from observation terminals installed in various places.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an earthquake observation system of an embodiment.
FIG. 2 is a block diagram showing a configuration of a control unit.
FIG. 3 is a flowchart showing processing executed by an observation terminal, an epicenter information management device, and an earthquake waveform data collection device.
FIG. 4 is a flowchart showing seismic intensity information processing.
FIG. 5 is a flowchart showing a waveform data collection process.
FIG. 6 is a flowchart showing interrupt processing executed during waveform data collection processing;
FIG. 7 is a flowchart showing common earthquake data processing.
FIG. 8 is a diagram showing a basic screen.
FIG. 9 is a diagram showing a setting change screen.
FIG. 10 is a diagram showing a seismic intensity information collection screen.
FIG. 11 is a diagram showing a basic screen displayed during a waveform data collection process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Earthquake observation system, 2 ... Observation terminal, 3 ... Communication line, 4 ... Transmission / reception apparatus, 5 ... Epicenter information management apparatus, 6 ... Research facility, 30 ... Earthquake waveform data collection apparatus, 40 ... Terminal apparatus.

Claims (12)

An earthquake waveform data collection device for use in an earthquake observation system,
The seismic observation system comprises one or more observation terminals each having a seismic measuring device for measuring the acceleration data and the waveform data of seismic, the observation terminal, when an earthquake occurs, the waveform data and the acceleration data Get
In response to an instruction from the user or when a predetermined time is reached, the acceleration data and the acceleration data of the waveform data are requested to the observation terminal,
Receiving the acceleration data from the observation terminal;
Determining whether the acceleration data satisfies a predetermined collection condition;
When the current time is included in the specified time period for receiving the waveform data, which is further the acceleration data is determined that the collecting condition is satisfied, the observation terminal the waveform data corresponding to the acceleration data To request and
Receiving and storing the waveform data from the observation terminal;
Earthquake waveform data collection device. The collection condition is that acceleration data is greater than or equal to a reference value, or acceleration data is less than a reference value,
The earthquake waveform data collection device according to claim 1, wherein a user can set the reference value. The seismic waveform data collection device according to claim 1 or 2 , wherein a time zone for receiving the seismic waveform data is set, and the acceleration data is associated with the acceleration data when it is determined that the collection condition is satisfied. Store the collection instruction information,
Confirm the presence of the collection instruction information in the time zone,
When it is confirmed that there is the collection instruction information, for all the acceleration data associated with the collection instruction information, request the observation terminal for earthquake waveform data corresponding to the acceleration data,
The earthquake waveform data collection device according to claim 1 or 2. Upon detecting interruption of waveform data transmission from the observation terminal, repeatedly requesting the observation terminal to transmit the waveform data,
The earthquake waveform data collection device according to claim 1. The earthquake observation system further includes one or more terminal devices connected to the earthquake waveform data collection device via a network,
Creating common earthquake data having a format that can be commonly used by the one or more terminal devices, using the waveform data received from the observation terminal;
Storing the common earthquake data;
The earthquake waveform data collection device according to claim 1. The seismic observation system further includes an epicenter information management device capable of communicating with the seismic waveform data collection device, the seismic source information management device owns the epicenter information,
When the predetermined data creation time comes, request the epicenter information from the epicenter information management device,
Receiving epicenter information from the epicenter information management device,
Create the common earthquake data using the received epicenter information and the waveform data,
The earthquake waveform data collection device according to claim 5. An earthquake observation system comprising one or more observation terminals each having an earthquake measuring instrument for measuring earthquake acceleration data and waveform data, and an earthquake waveform data collection device capable of communicating with each of the observation terminals,
When an earthquake occurs, the observation terminal obtains the waveform data and the acceleration data,
The earthquake waveform data collection device requests the acceleration data from the acceleration data and the waveform data to the observation terminal automatically in response to an instruction from a user or when a predetermined time is reached,
In response to this request, the observation terminal transmits the acceleration data to the seismic waveform data collection device,
The seismic waveform data collection device receives the acceleration data from the observation terminal,
The seismic waveform data collection device determines whether the acceleration data satisfies a predetermined collection condition,
The seismic waveform data collection device corresponds to the acceleration data when it is determined that the current time is included in a designated time zone for receiving the waveform data and the acceleration data satisfies the collection condition. the waveform data to be requested to the observation terminal,
In response to this request, the observation terminal transmits the waveform data to the earthquake waveform data collection device,
The seismic waveform data collection device receives and stores the waveform data;
Earthquake observation system. The collection condition is that acceleration data is greater than or equal to a reference value, or acceleration data is less than a reference value,
The earthquake observation system according to claim 7, wherein a user can set the reference value. The earthquake observation system according to claim 7 or 8, wherein a time zone for receiving earthquake waveform data is set, wherein the earthquake waveform data collection device includes:
When it is determined that the acceleration data satisfies the collection condition, the collection instruction information is stored in association with the acceleration data,
Confirm the presence of the collection instruction information in the time zone,
When it is confirmed that there is the collection instruction information, for all the acceleration data associated with the collection instruction information, request the observation terminal for earthquake waveform data corresponding to the acceleration data,
The earthquake observation system according to claim 7 or 8. When the observation terminal detects an earthquake during transmission of the waveform data to the earthquake waveform data collection device, the observation terminal measures the earthquake and interrupts transmission of the waveform data,
The seismic waveform data collection device, upon detecting interruption of the transmission of the waveform data from the observation terminal, repeatedly requests the observation terminal to transmit the waveform data,
The observation terminal transmits the waveform data again to the earthquake waveform data collection device in response to the request after the measurement of the earthquake is completed.
The earthquake observation system in any one of Claims 7-9. The earthquake observation system according to any one of claims 7 to 10, further comprising one or more terminal devices connected to the earthquake waveform data collection device via a network.
The seismic waveform data collection device creates common earthquake data having a format that can be commonly used by the one or more terminal devices, using the waveform data received from the observation terminal,
The earthquake waveform data collection device stores the common earthquake data,
Each of the terminal devices can access the common earthquake data.
The earthquake observation system in any one of Claims 7-10. The earthquake observation system according to claim 11, further comprising an epicenter information management device capable of communicating with the seismic waveform data collection device,
The epicenter information management device owns the epicenter information,
The seismic waveform data collection device requests the epicenter information from the epicenter information management device at a predetermined data creation time,
In response to this request, the epicenter information management device transmits epicenter information to the seismic waveform data collection device,
The seismic waveform data collection device receives the epicenter information from the epicenter information management device,
The seismic waveform data collection device creates the common earthquake data using the epicenter information and the waveform data,
The earthquake observation system according to claim 11.

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