KR20160038595A - Monitoring method for underground state - Google Patents

Abstract

The present invention has a purpose to prevent the occurrence of a sinkhole or a sunken road in advance by monitoring an underground state. The present invention relates to a method for monitoring an underground state by using an underground state monitoring system to which a geographic information system (GIS) and an ubiquitous system are applied. The underground state monitoring system constructs a database related to underground utilities and comprises: a device for monitoring the underground utilities in real time, middleware, a connecting device, and a water and sewage sensor network device. The system sets real-time monitoring for the underground utilities, stores request information for monitoring and performed monitoring information in a sensing database included in a monitoring server, analyzes the underground utilities by using a system driving device, and transmits the analyzed information to a user.

Description

Monitoring method for underground state}

The present invention relates to a method of preparing for sinkholes or road depression, and more particularly, it relates to a method of preparing sinkholes or road depressions by predicting the possibility of sinking of roads by grasping ground conditions under roads in various ways, The present invention relates to an underground condition monitoring method.

In recent years, interest in sink holes has been increasing as sink holes or road depressions have occurred in various parts of the city. In many parts of the world, a large number of sinkholes have been created, and there has been much interest in sinkholes. For example, Mexico's cave of swallow is the world's largest vertical sink hole, measuring 50 meters in diameter and 376 meters in depth. In Venezuela, there is a huge sinkhole with a diameter and depth of 350m, which is called sarisarinama in the upper part of the mountain over 2000m above sea level, continuing along the fault line.

Sinkholes or road depressions are typically created as groundwater is drained from the ground. There is a long cracked crack in the ground, which is filled with ground water, and the ground is settled by the empty space created by the ground water. Also, when the ground water is turned to another place, the ground can be settled down due to the weakness of the soil due to the water 's contact with the soil which has not been watered for a long time. In addition, the leakage of water into the surrounding soil may cause a sinkhole or a road ditch due to the leakage of water from the city water supply pipe. In addition, the groundwater flows well and the large and small grains such as clay, silt, and sand flow together, so that the groundwater flowing through the hole can be eroded and the groundwater length can be eroded to increase the risk of sink hole or road depression.

Sinkholes or road depressions occur deeply and largely in areas with many sedimentary rocks, so most of the country's land does not occur in soils composed of solid granite and gneissic layers like Korea. In recent years, however, due to insufficient urban development and safety measures, underground water has been introduced into the ground under weakened ground, thereby reducing or sweeping the cohesion of the soil, which causes land sinks such as sinkholes or road depressions .

There is a problem that if a sink hole or a road dwindle suddenly occurs, it may lead to large damage. Therefore, it is necessary to perform monitoring to grasp the ground condition under the road in advance to grasp and prevent it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to prevent a sink hole or a road ditch from occurring by monitoring the underground condition.

According to an aspect of the present invention, there is provided a method for monitoring an underground condition using a geographic information system (GIS) and a ubiquitous underground condition monitoring system, Establishing a database of underground objects in the underground condition monitoring system; Wherein the underground condition monitoring system is provided with a real time monitoring device, a middleware, a linkage device, and a water supply and drainage sensor network device in the underground condition monitoring system, Storing the request information and the performed monitoring information in a sensing database included in the monitoring server; And a step of the underground condition monitoring system analyzing the underground using the system driving apparatus and transmitting the analyzed information to the user.

The underground condition monitoring system may include a camera capable of sensing and moving situation information for real time monitoring, capable of controlling operation by an external signal, and capable of storing and transmitting monitoring information.

The camera is capable of shooting 360 degrees and performs image capturing in a panoramic manner, and coordinates can be expressed in each image area by the monitoring server.

According to another aspect of the present invention, there is provided a method for monitoring a ground condition using an underground condition monitoring system to which an internal shape and spatial information of an underground space and a shielding structure are applied, The underground monitoring system includes a geophysical receiver, a laser displacement meter, and an analysis unit. The geophysical monitoring system includes setting a reference point outside the underground space and the shielding structure through the laser ray receiver; Obtaining world geodetic coordinates from a GPS receiver; Obtaining a world geodetic coordinate of the laser scanner through a laser displacement meter; And acquiring the internal shape and spatial information by performing correction according to whether or not correction of the world geodetic coordinate is required in the analysis unit.

The laser scanner may further include a camera for acquiring image information.

According to another aspect of the present invention, there is provided a method for monitoring an underground condition using an underground condition monitoring system using an underground space and an inner shape and spatial information of a shielding structure, Determining a sideline by referring to the existing storage data data for the specific area by the underground condition monitoring system, and determining the sideline status; Acquiring an image section of an underground by performing a search while maintaining a predetermined transmit / receive antenna interval along the selected side line; Tracking the underground material using a metal pipe detector, determining the location and depth, and collecting the imaged surface section data; And analyzing the state of the underground after converting the collected surface data into a video image.

The underground condition monitoring system measures the ground structure and the shape and position of the structures existing in the ground by measuring the time of returning electromagnetic waves reflected at the interface where the physical properties of the medium are changed, ) Can be used.

The ground surface radar survey method using the satellite can estimate a ground settlement expected area by collecting satellite images for a predetermined period and tracking and analyzing the state change of the ground.

According to the present invention, it is possible to grasp the causes of subsidence such as sink hole and road depression by grasping the state change of underground in real time.

FIG. 1A is a flowchart illustrating a ground state monitoring method using GIS and Ubiquitous according to an embodiment of the present invention.
1B is a block diagram illustrating a ground state monitoring system using GIS and Ubiquitous according to an embodiment of the present invention.
FIG. 1C is a block diagram illustrating an underground embedded real time monitoring apparatus according to an embodiment of the present invention. Referring to FIG.
2 is a flowchart illustrating a ground state monitoring method according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1A is a flowchart illustrating a ground state monitoring method using a geographic information system (hereinafter, referred to as 'GIS') and a ubiquitous system according to an embodiment of the present invention. 1B is a block diagram illustrating a ground state monitoring system using GIS and Ubiquitous according to an embodiment of the present invention.

FIG. 1C is a block diagram illustrating an underground embedded real time monitoring apparatus according to an embodiment of the present invention. Referring to FIG.

GIS is a comprehensive information system designed to create and manage maps and geographic information used in the form of past prints using a computer, and to collect, analyze and process data based on the geographical information obtained therefrom and apply it to all fields related to the terrain. .

Referring to FIGS. 1A to 1C, in step 110, a basic database 11 for a basement, such as a water supply pipe and a sewage pipe, is constructed. The constructed database 11 may include a plurality of pieces of geographical information as geographical information, detailed information corresponding to the geographical data, and attribute information data as related information. Here, the geographical data may include an administrative area map, a water pipe, an inlet pipe, a sewer pipe, a hydraulic node, a sediment node, a sewage drainage area map, and the like. In addition, the attribute information data may include a water pipe, an inlet pipe, a sewer pipe, a sewer manhole, a sewer pipe, a sewer pipe, an excellent pipe line, pipe network analysis information, pipe network environment variable information, layer information, It is possible to analyze related information quickly by using the database 11 constructed based on such data, and it is possible to acquire information on the corresponding waterworks and sewerage pipes through the pipe network analysis.

In addition, it is possible to manage the information by the data collected from the sensors installed in the waterworks and the sewerage, and the data collected from the sensors through the underground condition monitoring system 10. That is, information related to the waterworks and sewerage can be collected in real time by executing commands related to information collection to the sensor 16, and it is possible to efficiently manage underground objects by periodically checking the information.

To this end, the underground condition monitoring system 10 includes a middleware 13, a middleware 13, and an underground facility 13, which enable the underground embedded real time monitoring device 12, the sensor network device 15, A connection device 14 that enables the setting of monitoring by connecting the monitoring device 12 in the middle and a water supply and drainage sensor network device 15 that causes the sensor 16 actually installed in the underground such as water supply and sewage to operate by monitoring command, . In addition, it may further include a sensing database 17 for storing monitoring information. The sensor 16 connected to the water supply and drainage sensor network device 15 and sensing the state of fluid delivered through the water supply and drainage pipe includes a water pressure sensor for sensing a water pressure, a water level, and a gas pressure, a water level sensor, It is possible.

In step 130, real-time monitoring is set in the underground real time monitoring device 12. In step 140, when real-time monitoring of underground objects is set, the middleware 13 executes a monitoring command, receives request information for the monitoring, receives information on monitoring performed in the middleware 13 together with the request information, In the sensing database 17. In this case, the middleware 13 performs sensing and monitoring commands using the sensors 16 provided in the actual installed water supply and sewerage, and collects data in the sensing database 17. The collected data is transmitted to the water supply and drainage sensor network device 15 And is transferred to the linking device 14. Thereafter, in the linking device 14, the data transferred from the sensor network device 15 is converted and stored in the sensing database 17 again. This data is then displayed in the underground embedded real time monitoring system 10, And is displayed on the display 18 through a user interface (GUI).

The underground condition monitoring system 10 may further include a system drive 19. [ The system driving device 19 may be a means for utilizing the overlay analysis function of the water pipe block information and the zone information of the wastewater treatment zone and the measurement information corresponding to the acquired water pipe for the analysis of the capacity of the sewage pipe. It can also be used as a means to transmit the measurement information acquired from the excellent pipeline in connection with the river flow rate, water quality prediction and disaster analysis solution. That is, through the system driving device 19, various analysis information can be calculated using geographic information data and metrology data as input data. Through this, it is possible to acquire the change of the status of underground objects and the environment or condition information of underground objects do.

In addition, in step 150, the system driving device 19 can transmit information of underground objects acquired through various communication means to the user under the ubiquitous environment. For example, according to a user's setting, it is possible to transmit the underground-related information acquired in real time to the user's mobile terminal through a short message (SMS). At this time, the data compatibility of the system driving device 19 is determined according to the communication environment of the underground condition monitoring system 10, and the communication environment includes middleware 13 capable of accommodating various ubiquitous environments such as Zigbee, CDMA, WCDMA, ) Can be adopted and used universally. On the other hand, the reception API and the sensing database receiving unit of the middleware 13 can freely set the information on the transmission period, the transmission item, and the transmission object by standardizing the communication protocol of the communication network.

Here, the camera can be used in conjunction with the sensor for underground real-time monitoring. The underground real time monitoring device 12 using a camera includes a situation information sensing unit 121 serving as the sensor 16, a mobile camera 122, a camera operation control unit 123, a camera movement rail and a monitoring server 124 < / RTI >

The situation information sensing unit 121 is installed in the basement and acquires underground situation information. At least one or more of the situation information sensing unit 121 may be installed in the basement and may provide information on various situations such as smoke generation, water level rise, flame generation, and the like.

The mobile camera 122 has a moving means and photographs the underground environment. At least one mobile camera 122 may be installed in the underground, and may further include a distance meter, a tachometer, or the like as a tachometer to measure an accurate moving distance when moving. In addition, the mobile camera 122 may further include a temperature / humidity sensor or a gas sensor for determining the lighting unit and the underground situation to smoothly photograph the underground.

The camera operation control unit 123 generates a signal for moving the mobile camera 122 to the situation information sensing unit 121 where the situation information is obtained when the situation information is acquired in the situation information sensing unit 121. [ That is, the camera operation control unit 123 determines one of the mobile cameras 122 installed in the basement in consideration of the acquired position of the situation information, and transmits the status information to the mobile camera 122). Here, the mobile camera 122 may have a moving means, such as a moving rail, and photographs the basement at a predetermined location.

When the portable camera 122 captures the location where the underground situation information is acquired by the control of the camera operation control unit 123 and transmits the captured image, the end is performed. Here, the transmission of the photographed image may be transmitted in real time via the wired or wireless communication means. The mobile camera 122 used here can take a background image in a panoramic manner around the observation point. In other words, all of the horizontal 360 ° directions around the point at which the situation information is to be acquired are divided into a plurality of images, and the captured plurality of images can be synthesized into one panoramic image in order. A panoramic background image is generated by recording coordinate information captured in the synthesized panoramic image. The generated panoramic background image may include a 360-degree surrounding image, each image region, and coordinate information of each point. Data transmitted from the camera by rotating or tilting around the point of interest is generated as surveillance image data. As a result, a real-time monitoring image of the monitoring area changing every moment is generated, and coordinate information of the monitoring area screen and the monitoring point photographed together with the real-time monitoring image is recorded. The surveillance image data generated together with the coordinate information and thus generated is transmitted to the monitoring server 124 in real time.

The monitoring server 124 outputs the panoramic background image generated by the camera and then superimposes the surveillance image data around the observation point photographed and received in real time on the background image based on the matched coordinate information. Accordingly, the surveillance image photographed in real time around the observation point can be output in real time on the control screen of the monitoring server 124, and may be output in real time on the panoramic background image. That is, the image is rotated and moved to the corresponding position on the panoramic background image corresponding to the rotated position at the observation point. In this way, the supervisor and operator performing monitoring surveillance can easily grasp the exact position of the surveillance image currently photographed.

Therefore, it is possible to quickly and precisely monitor various alarm situations occurring in the underground, in operating and managing a specific area underground where major infrastructure of a country and a city is accommodated by using such an underground condition monitoring method. It is possible to prevent large-scale accidents in advance by providing information so as to be able to respond promptly in the event of a situation such as damage of water supply and sewer pipes or risk of collapse of underground tunnels.

In addition, it is possible to selectively monitor various alarm situations occurring in the underground, so that it is possible to greatly reduce the workload of manpower dispatch due to the malfunction of the alarm device frequently caused by the underground environment, And manpower required for management can be reduced.

2 is a flowchart illustrating a ground state monitoring method according to another embodiment of the present invention.

In order to acquire the underground space such as the tunnel, the inner shape of the shielding structure, and the spatial information, a reference point can be formed in the underground space and the outside of the shielding structure through the geophone receiver in the positioning unit. The world geodetic system (WGS84) coordinates that determine the coordinates along the X, Y and Z axes with the center of the earth ellipsoid as the origin are obtained from the geophysical receiver using the geocentric coordinate system. Then, the distance from the laser scanner is measured through the laser displacement gauge to obtain the world geodetic coordinate of the laser scanner. At this time, if the attitude of the laser scanner is controlled through the laser scanner posture control unit and the movement trajectory of the AGV (Auto Guided Vehicle) is tracked by using an inertial measurement unit (IMU) The coordinates can be corrected. Therefore, it is possible to calculate by correcting the world geodetic coordinates of the target point existing in the underground space and the shielding structure from the main controller. A camera such as a digital camera may be installed in the laser scanner to acquire image information as well as spatial coordinates within the underground space and the shielding structure.

Also, underground condition monitoring using ground penetration radar (GPR) method can be considered. Ground surface radar survey method is a method to measure the arrival time of electromagnetic waves reflected from the boundary surface where the physical properties of medium are changed by transmitting electromagnetic waves. It is a survey method to grasp the ground structure and the position and shape of a structure existing in the underground. It has been used to acquire information such as exact location and depth by acquiring two-dimensional image section of underground underground in areas where roads and railways pass through and in scenic areas. The ground surface radar survey method has advantages that the equipment is simple and easy to operate and the image with high resolution can be obtained as compared with other exploration methods such as seismic survey method. Therefore, it is possible to confirm sink hole or road depression using this. In other words, the ground subsidence area can be confirmed by analyzing the image taken by the satellite using the ground surface radar survey method and the satellite. Since the sinkhole where the surface is suddenly turned off or the omnipresence of the surrounding landfall before the road depression occurs, the satellite image that can be seen for several tens of kilometers (km) · When observing, it is possible to predict where sink hole or road depression is likely to occur.

Satellite satellite radars can be used to predict sinkholes or road depression via satellites. The weather satellite radar fires an X-band frequency of 2.5 centimeters in wavelength, which is reflected when it touches the surface of the earth. Therefore, by analyzing accumulated images for several years, it is possible to confirm whether there is a change in the height of the ground surface. This can be said to be similar to X-ray examination, which confirms a wide area. Because it uses the reflected wave of the ground surface, it is advantageous that it can obtain high-resolution image at night without being influenced by the weather. Although the accuracy of the settlement measurement method using the currently used satellite positioning system (GPS) is high, there is a problem that it takes a long time and a long time to measure a wide area. In addition, there is a disadvantage that it is difficult to observe if it sinks slowly over several decades.

Surface-based radar surveys using satellites are similar to computed tomography (CT) in that they allow a closer look at the underground space of small areas. The electromagnetic wave is shot on the surface of the earth, and then the received reflected wave is analyzed to confirm the underground crack or pupil. Electromagnetic waves are reflected at the interface between different sand and soil, which is applied to the underground inspection. Equipment with a maximum detection depth of up to tens of meters (m) may be used. Since asphalt can also be penetrated, it can be applied to various places such as bridges. It can also be used in underground roads where it is impossible to check ground subsidence through satellite.

The process described above will be briefly described. At step 210, a survey area is determined by referring to data such as visual inspection and existing storage for a specific area.

In step 220, a search is performed while maintaining the spacing of the transmitting and receiving antennas along the selected sideline to acquire a two-dimensional underground image section.

In step 230, the position and depth of the metal pipe and the cables are tracked by an electromagnetic induction type metal pipe detector, and the reference is made to the image analysis of the surface of the image.

In step 240, the data obtained from the basement is converted into a video image, and the process of analyzing the existing underground objects, the visual inspection, and the analysis using the data using the metal pipe detector is performed.

As a result, it is possible to grasp the location and depth of underground facilities such as water supply and drainage, city gas pipes, and underground cables, and it can be used for basic design of structures and measures to prevent underground burials by enabling nondestructive inspection of civil structures. In addition to these methods, there are excavation, application of distance measuring device using laser, method using RFID, method using USN, and method using network using magnetic field communication as methods for monitoring underground conditions. In addition to water and sewage and underground tunnels, , Gas pipes, oil pipelines, and heating pipes can be accurately judged.

The preferred embodiments of the present invention have been described above. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the improved embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

10: Underground condition monitoring system
11: Basic database 12: Underground monitoring device
13: Middleware 14: Linkage device
15: Sensor network device 16: Sensor
17: Sensing database 18: Display
19: System drive
121: situation information sensing unit 122: mobile camera
123: camera operation control unit 124: monitoring server

Claims (8)

A method for monitoring an underground condition using a geographic information system (GIS) and an underground condition monitoring system using ubiquitous,
Establishing a database of underground objects in the underground condition monitoring system;
The underground condition monitoring system including a real time monitoring device, a middleware, a linkage device, and a water supply and drainage sensor network device;
Setting the underground condition monitoring system to underground underground real time monitoring;
Storing the request information for the monitoring and the monitoring information performed by the underground condition monitoring system in a sensing database included in the monitoring server; And
Wherein the underground condition monitoring system analyzes the underground buried object using the system drive device and delivers the analyzed information to the user. The method according to claim 1,
Wherein the underground condition monitoring system includes a camera capable of sensing and moving situation information for real time monitoring and capable of controlling operation by an external signal and storing and transmitting monitoring information, . The method of claim 2,
Wherein the camera is capable of shooting 360 degrees and performs image capturing in a panoramic manner, and coordinates are displayed in each image area by the monitoring server. A method for monitoring an underground condition using an underground condition monitoring system using an underground space and an inner shape and spatial information of a shielding structure,
The underground monitoring system includes a GPS receiver, a laser displacement meter, and an analysis unit,
Setting a reference point on the outside of the underground space and the shielding structure through the laser ray receiver;
Obtaining world geodetic coordinates from a GPS receiver;
Obtaining a world geodetic coordinate of the laser scanner through a laser displacement meter; And
Wherein the analyzing unit performs calibration to acquire the internal shape and spatial information according to whether correction of the world geodetic coordinate is required or not. The method of claim 4,
Wherein the laser scanner further comprises a camera for acquiring image information. A method for monitoring an underground condition using an underground condition monitoring system using an underground space and an inner shape and spatial information of a shielding structure,
Determining a sideline by referring to the existing storage data data for a specific area by the underground condition monitoring system;
Acquiring an image section of an underground by performing a search while maintaining a predetermined transmit / receive antenna interval along the selected side line;
Tracking the underground material using a metal pipe detector, determining the location and depth, and collecting the imaged surface section data; And
And converting the collected ground surface data into a video image and analyzing the state of the underground condition. The method of claim 6,
The underground condition monitoring system
(GPR) using a satellite that exploits the ground structure and the shape and structure of a structure existing in the ground by measuring the time that electromagnetic waves reflected from the boundary surface at which the physical properties of the medium are changed are returned, Monitoring method of underground condition. The method of claim 7,
Wherein the ground surface radar survey method using the satellite collects satellite images for a predetermined period of time and tracks the state change of the ground to predict and predict a ground settlement expected area.

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