KR20180058242A - Earthquake monitoring service system - Google Patents

Abstract

According to the present invention, disclosed is an earthquake monitoring service system which provides a monitoring service by sensing an earthquake event to reduce damage of an earthquake disaster. According to an embodiment of the present invention, the earthquake monitoring service system comprises: an earthquake warning server for generating and transmitting earthquake warning information by earthquake vibration measurement information and GPS displacement measurement information; a terminal for displaying monitoring information based on a disaster region by the earthquake warning information received from the earthquake warning server; and a communication network for transmitting and receiving the earthquake warning information between the earthquake warning server and the terminal.

Description

Earthquake monitoring service system {Earthquake monitoring service system}

The present invention relates to an earthquake monitoring service system, and more particularly, to an earthquake monitoring service system that enables monitoring according to seismic event detection for mitigating earthquake damage.

Recent frequent earthquakes have affected the whole society as well as individuals, households, and society, and it is necessary to provide an early warning system to detect and warn earthquakes early. On the other hand, the conventional earthquake early warning system is a very large device that is alarmed by government public research institutes. It is composed of industrial computer based seismic signal detection, signal acquisition and analysis, data storage and so on. , It is impossible to detect the earthquake due to operational errors and the reliability of the operation of the apparatus is very low due to the fact that the independence is not secured physically. Also, the earthquake is analyzed through acquisition, storage and analysis of the seismic data, There is a problem that it takes a lot of time.

In addition, the conventional earthquake early warning system has a problem that the earthquake occurs when an earthquake occurs because an individual must rely solely on public broadcasting. 2. Description of the Related Art A conventional earthquake warning system using a mobile communication network includes a mobile communication unit including a mobile communication terminal, a geographical information system (GIS) for storing and processing topographical information including an operating subject computer connected to a seismic station, And a short message server for transmitting a short message about the seismic alert to the mobile communication terminal through the mobile communication network. According to these components, when the seismic station converts the observations into electrical signals and transmits them to the operating subject computer, the operating subject computer receives the signals and judges the risk of an earthquake. The operating subject computer largely sets the limit of the observation value, and there is a method of judging a dangerous state when an observation value exceeding the limit value is received, and a method of simulating an earthquake state by inputting the collected observation value into a pre- And prediction method.

If it is determined that the operation subject computer is in a dangerous state, the dangerous area is set through the geographic information system and the corresponding mobile communication cell is extracted. The cell information extracted by the geographic information system is transmitted to the SMS server via the Internet by the operating subject computer together with the alarm message, and the SMS server transmits an alarm message to all the mobile communication terminals in the dangerous area through the mobile communication network, And transmits an alarm message to the registered terminal.

However, in the conventional seismic early warning system, when the earthquake and disaster related information of the Korea Meteorological Administration is interlocked with the operation subject computer and the real time interworking between the operation subject computer and the mobile communication network is not established, The transmission of the earthquake / tsunami observation information is delayed due to the inconsistency and the transmission delay due to the overload of the mobile communication network, so that the user of the mobile communication terminal is delayed and the risk of a major disaster accidents becomes high.

An object of the present invention is to provide a monitoring service for detecting an earthquake event for alleviating earthquake disasters.

According to an aspect of the present invention, there is provided an earthquake monitoring service system including: a seismic alert server for generating and transmitting seismic alert information according to seismic dynamic measurement information and GPS displacement measurement information; A terminal for displaying location-based monitoring information on the disaster area according to the seismic alert information received from the seismic alert server; And a communication network for transmitting and receiving the seismic alert information between the seismic alert server and the terminal.

The location based monitoring information includes at least one of map display information on the disaster area, a GPS displacement data graph, an MMA earthquake motion data graph, a sampling earthquake motion data graph, and an environment monitoring data graph.

The communication network includes at least one of a wired network and a wireless network.

Wherein the earthquake warning server receives the earthquake dynamic measurement information from a earthquake dynamic measurement unit that senses earthquake acceleration data according to earthquake motion of the disaster area and receives the GPS displacement measurement information from a GPS displacement measurement unit that measures GPS displacement of the disaster area do.

Wherein the earthquake warning server comprises: a receiver for receiving the earthquake-dynamic measurement information and the GPS displacement measurement information; A controller for comparing the at least one of the earthquake dynamic measurement information and the GPS displacement measurement information with a threshold to generate the seismic alert information; And a transmitter for transmitting the generated seismic alert information.

According to the embodiment of the present invention, a warning message informing the danger of an earthquake situation through the observed earthquake-related data can be transmitted to the terminal in real time so that an earthquake warning can be transmitted to the individual early so that it can be guided safely.

1 is a block diagram of an earthquake monitoring service system according to an embodiment of the present invention.
2 is a graph illustrating raw earthquake data measured by the earthquake-dynamic measuring unit.
3 is a graph illustrating GPS reception data received by the GPS displacement measuring unit.
4 is a block diagram showing the configuration of the seismic alert server shown in FIG.
5A and 5B are diagrams illustrating a user interface screen according to driving of a monitoring program.
6A to 6E are views illustrating location based monitoring information displayed on the terminal shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an earthquake monitoring service system according to an embodiment of the present invention. Referring to FIG. 1, an earthquake monitoring service system includes an early warning server 100, a communication network 200, and a terminal 300.

The early warning server 100 generates seismic alert information according to the seismic dynamic measurement information and the GPS displacement measurement information and transmits the generated seismic alert information to the terminal 300 through the communication network 200. The earthquake warning server 100 receives the earthquake vibration measurement information from a earthquake motion measurement unit (not shown) that detects earthquake acceleration data according to the earthquake-induced vibration of the disaster area, and measures a GPS displacement of the disaster area And receives the GPS displacement measurement information.

The earthquake dynamic measurement unit is installed in free field and structure and has up to 8 3-axis acceleration sensors, OBE (Operating Based Earthquake) and SSE (Safety Shutdown Earthquake) for real- Eight earthquake switches that only respond to seismic acceleration amplitudes above the setpoint and two seismic triggers that provide separate operating contacts for multiple seismic acquisition commands in response to a setpoint of the amplitude of the earthquake acceleration in a particular frequency range .

The seismic vibration measuring unit can detect the earthquake vibration signal through the 3-axis acceleration sensor and measure the acceleration value from the sensed signal. Here, the three-axis acceleration sensor is a sensor that detects acceleration and vibration by dividing the measurement area into X, Y, and Z axes. The earthquake dynamic range measuring unit may transmit the measured acceleration value to the seismic alert server 100. The transmission can use either a wired or wireless scheme. 2 is a graph illustrating raw earthquake data measured by the earthquake-dynamic measuring unit.

The earthquake-dynamic measuring unit can pre-trigger earthquake occurrence through seismic event detection algorithm for data measured at the corresponding location using the earthquake event pre-detection module. Here, the seismic event detection algorithm used is a short-term average (STA) using a short-term average value of vibration detected at the time of an earthquake, a long-term average (LTA) And a seismic wave automatic detection method using a variable threshold value.

Acceleration data and pre-detection results (preTRG = ON or OFF) of the three-axis directions (EW, NS, UD) measured at the same time in at least two seismic motion measuring units are stored in real time Or a data packet composed of data of a predetermined time interval to the seismic alert server 100. The data waiting module of the seismic dynamic measuring unit is composed of N ring buffers having a predetermined data length, that is, a moving data window size. And serves as a temporary storage for retransmission of data when there is untransmitted data due to a communication error such as disconnection with the earthquake alert server 100. [ When the connection is disconnected, continuous reconnection occurs. If the set reconnection time is exceeded, data exceeding the ring buffer size is discarded to prevent waste of resources of the system.

The GPS displacement measuring unit measures the GPS displacement of the disaster area and transmits the measured GPS displacement measurement information to the seismic alert server 100. 3 is a graph illustrating GPS reception data received by the GPS displacement measuring unit.

The GPS displacement measuring unit stores the measurement satellite data (the carrier phase value, the distance between the satellite and the receiver antenna (similar distance), the satellite orbit information measured by the GPS receiver, and the clock data (GPS time) employed in the satellite measurement system) A satellite data for measurement obtained from the GPS receiver and measurement satellite data from a mobile station in the vicinity of a reference station or a reference station and a reference relative displacement amount of a previous station through a receiver, A reference relative displacement amount calculating unit for calculating a relative relative displacement amount of the mobile station by inputting a relative displacement amount obtained by the relative displacement amount calculating unit and a reference relative displacement amount of the previous station, The satellite data for measurement of the mobile station, i.e., the own station, and the reference relative displacement amount, Binary reference is input to a relative amount of displacement composed of a transmission data generating writing transmission data to transmit to the next station. The transmission data created by the transmission data creating unit is transmitted to the seismic alert server 100 through the transmitter.

When receiving the acceleration value from the earthquake-motion measuring unit, the earthquake warning server 100 compares the received critical acceleration value with the received acceleration value. The critical acceleration value is a minimum value for generating a warning message indicating occurrence of an earthquake. The seismic alert server 100 may generate and output seismic alert information when the received acceleration value exceeds the critical acceleration value as a result of the comparison. The seismic alert server 100 may be used in various forms such as a USB modem.

4 is a block diagram showing the configuration of the seismic alert server 100 shown in Fig. 4, the seismic alert server 100 may include a receiver 110, a database 120, a controller 130, and a transmitter 140.

The receiving unit 110 receives the earthquake measurement information measured by the three-axis acceleration sensor of the earthquake-vibration measuring unit by sensing the earthquake-induced vibration signal. Also, the receiving unit 110 receives the measured GPS displacement measurement information of the disaster area.

The database 120 stores the earthquake-dynamic measurement information and the GPS displacement measurement information received from the reception unit 110. In addition, the database 120 may store application programs and other software necessary for the seismic alert server 100 to operate. The database 120 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a RAM , ROM (EEPROM, etc.), and the like.

The control unit 130 compares the at least one of the earthquake-dynamic measurement information and the GPS displacement measurement information with a threshold value to determine whether to generate the earthquake warning information. The controller 130 receives the earthquake dynamic measurement information, that is, the acceleration value, and determines whether to generate the early warning information by comparing with the threshold acceleration value. The critical acceleration value means a minimum value for generating early warning information. The early warning information is information indicating the occurrence of an earthquake, and may include an area where the earthquake occurs, a progress indicating the intensity of the earthquake, and a phrase indicating the evacuation. If the received acceleration value exceeds the threshold acceleration value, the control unit 130 may generate and output early warning information indicating the occurrence of an earthquake.

The control unit 130 includes a data waiting module for performing accurate time synchronization of measurement data through a retransmission process when there is an unreceived data due to a communication error with each seismic data measurement system, A stacking processing module for reconstructing the data into stacked data, an earthquake event detection module for performing post-processing detection to check whether an earthquake event has occurred, and an earthquake event pre-detection And an earthquake event discrimination module for discriminating whether or not an earthquake event has occurred by utilizing the result and post-processing detection result.

The process of removing noise and reconstructing the data into stacked data includes a process of removing offset noise due to sensor misalignment at each sensor output, a process of generating a data acquisition system (SDAS; seismic data the method comprising the steps of removing measurement noise of a random characteristic through microarray data stacking of an acquisition system and accumulating positional data consisting of a plurality of SDAS outputs with measurement noise removed, And removing background noise of the remaining coherent characteristic.

The real-time data or data packet transmitted from two or more seismic data measurement systems may be transmitted to the control unit 130 in a case where there is unreceived data due to a communication error with each seismic data measurement system in the data standby module of the control unit 130, Synchronization takes place. The data waiting module is composed of N ring buffers having a predetermined data length, that is, a moving data window size.

The synchronized data is reconstructed with noise cancellation and stacked data through a data stacking processing module. The data polymerization processing module can reconstruct the data or the data packet s (t) resulting from the real-time measurement data and the seismic event pre-detection, noise cancellation and single-polymerization data using the polymerization data subjected to the measurement time information correction and polymerization. If the state of a specific seismic data measurement system is not normal during the polymerization process, the data of the measurement system is excluded from the polymerization process. The use of a large number of measurement systems can improve noise canceling performance and reduce the probability of false alarms.

The noise processing and its effect will be described in more detail as follows. In order to remove the noise of the seismic wave using the micropositioning polymerization, the following structure and operation are performed. The acceleration signal measured by the acceleration sensor is converted into a digital signal by the ADC (analog to digital converter) inside the sensor according to the set value and stored in the internal register. The main acceleration data acquisition module acquires the acceleration data stored in the internal register of the main acceleration sensor in series through the I2C module whenever an Fsync signal synchronized with the sampling frequency (100 Hz) is sensed. Thereafter, the data is sorted into X (EW), Y (NS), and Z (UD) axis data, and the offset is removed and transmitted to the stacking module. The I2C communication speed used in the design is the standard mode (100kbit / s).

The control unit 130 includes offset eliminating means for eliminating offset noise due to sensor misalignment at each sensor output, micro array data of a seismic data acquisition system (SDAS) composed of a plurality of sensor outputs, A micro-polymerization processing means for removing the measurement noise of the random characteristic through the stacking, and the position alignment data composed of a plurality of SDAS outputs from which measurement noises have been removed are further stacked in the main system, And a positional polymerization processing means for removing background noise of the characteristic. The control unit 130 performs post-processing detection (post TRG = ON or OFF) to check whether or not an earthquake event has occurred using the noise-removed polymerization data and the seismic event detection algorithm. The control unit 130 can finally determine whether an earthquake event has occurred by utilizing the pre-seismic event detection result and the post-processing detection result (post TRG = ON or OFF) in each seismic data measurement system.

The transmission unit 140 can transmit the generated early warning information to the communication network 200. [ The transmitting unit 140 is connected to the communication network 200 through a wired or wireless network.

The communication network 200 transmits and receives seismic alert information between the seismic alert server 100 and the terminal 300. For this purpose, the communication network 200 may form at least one network of a wired network and a wireless network. For example, the communication network 200 may be a wireless Internet such as WiFi (wireless fidelity), a portable Internet such as a wireless broadband internet (WiBro) or a world interoperability for microwave access (WiMax), a global system for mobile communication a 3G mobile communication network such as WCDMA (Wideband Code Division Multiple Access) or CDMA2000, a high speed downlink packet access (HSDPA), or a high speed uplink packet access (HSUPA) , A 4G mobile communication network such as an LTE (Long Term Evolution) network or an LTE-Advanced network, and a 5G mobile communication network.

A base station constituting the communication network 200 includes an access point, a radio access station, a node B, an evolved node B, a base transceiver station ), A mobile multihop relay (MMR) -BS, or the like, and may include all or some of functions of a base station, an access point, a radio access station, a Node B, an eNodeB, a base transceiver station, and an MMR-BS.

The terminal 300 displays location based monitoring information on the disaster area according to the earthquake alert information provided from the earthquake alert server 100 through the communication network 200. Herein, the terminal 300 includes a mobile station, a mobile terminal, a subscriber station, a portable subscriber station, a user equipment, an access terminal, etc. And may include all or some of functions of a terminal, a mobile station, a mobile terminal, a subscriber station, a mobile subscriber station, a user equipment, an access terminal, and the like. The terminal 300 may be a desktop computer, a laptop computer, a tablet PC, a wireless phone, a mobile phone, a smart phone, A smart watch, a smart glass, an e-book reader, a portable multimedia player (PMP), a portable game machine, a navigation device, a digital camera, a digital multimedia broadcasting (DMB) A digital audio recorder, a digital audio player, a digital picture recorder, a digital picture player, a digital video recorder, a digital video player digital video player) can be used.

The terminal 300 may be provided with a monitoring program as an app application for displaying location-based monitoring information through the communication network 200. The monitoring program may be executed by using a program included in a platform or an operating system installed in the terminal 300 or may be executed by a program provided through an application providing server such as a web server associated with an application store server or an application service by a user.

The terminal 300 may provide a user interface (UI) for providing location based monitoring information by driving a monitoring program. The terminal 300 may perform a process of authenticating a user when a user's login request is made through a user interface (UI), and may display a web page allowing the user to confirm the location-based monitoring information.

5A and 5B are diagrams illustrating a user interface screen according to driving of a monitoring program. When the user selects an icon for operating the monitoring program or a menu corresponding thereto, the terminal 300 displays a login information input screen for the location based monitoring information, as shown in FIG. 5A. When the user inputs correct login information, the terminal 300 can display various menu information for displaying the location-based monitoring information, as shown in FIG. 5B.

The user can input various user commands including a sensor, region, time, setting information, and the like for displaying the location based monitoring information on the displayed user interface screen. Can be displayed.

The terminal 300 may display the map display information, the GPS displacement data graph, the MMA earthquake data graph, the sampling earthquake data graph, and the environmental monitoring data graph for the disaster area as location based monitoring information. 6A to 6E are views illustrating location based monitoring information displayed on the terminal shown in FIG. Fig. 6A illustrates the map display information of the location based on the earthquake alert information, Fig. 6B illustrates the GPS displacement data graph as the earthquake alert information, Fig. 6C illustrates the MMA earthquake motion data graph as the earthquake alert information, 100HZ sampling earthquake motion data graph is shown as earthquake alert information, and FIG. 6E illustrates environment monitor data graph as seismic alert information. 6A to 6E, the terminal 300 displays map display information, a GPS displacement data graph, an MMA earthquake data graph, a sampling earthquake data graph, and an environmental monitoring data graph as location based monitoring information through a user interface (UI) . ≪ / RTI >

The earthquake monitoring service system according to the present invention is characterized in that, in each seismic alert server, the earthquake waveform source data and the pre-event detection result using the source data, the pre-detection result collected from each measurement system, And the earthquake monitoring information according to the integrated data generation is provided on the terminal in real time, so that the terminal can display it immediately.

The earthquake monitoring service system according to the present invention may be stored in a computer-readable recording medium. The computer-readable recording medium may be a ROM, a RAM, a CD-ROM , A magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. Also, functional programs, codes, and code segments for implementing the system can be easily inferred by programmers of the art to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

100: Earthquake Alert Server
110:
120: Database
130:
140:
200: Network
300:

Claims (5)

A seismic alert server for generating and transmitting seismic alert information according to seismic dynamic measurement information and GPS displacement measurement information;
A terminal for displaying location-based monitoring information on the disaster area according to the seismic alert information received from the seismic alert server; And
And a communication network for transmitting and receiving the seismic alert information between the seismic alert server and the terminal. The method according to claim 1,
Wherein the location based monitoring information includes at least one of map display information for the disaster area, a GPS displacement data graph, an MMA earthquake motion data graph, a sampling earthquake motion data graph, and an environmental monitoring data graph. The method according to claim 1,
Wherein the communication network comprises at least one of a wired network and a wireless network. The method according to claim 1,
The earthquake warning server comprises:
And receiving the GPS displacement measurement information from the GPS displacement measurement unit for measuring the GPS displacement of the disaster area from the earthquake dynamic measurement information from the earthquake dynamic measurement unit that detects the earthquake acceleration data according to the earthquake motion of the disaster area. 5. The method of claim 4,
The earthquake warning server comprises:
A receiver for receiving the earthquake-dynamic measurement information and the GPS displacement measurement information;
A controller for comparing the at least one of the earthquake dynamic measurement information and the GPS displacement measurement information with a threshold to generate the seismic alert information; And
And a transmitter for transmitting the generated seismic alert information.

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