KR20100138228A - Construction method and system and simulation method for 3d coordinates database of dams and rivers using gis, dgps and echo sounder - Google Patents

Abstract

PURPOSE: A method and a system for building a 3D coordinate database of river and a dam using a GIS(Geographic Information System), a DGPS(Differential Global Positioning System), and a depth sounder, and a simulation method using the same are provided to use saved data based on a need. CONSTITUTION: A DGPS receiver(20) obtains current location information of a ship. A depth sounder(30) is installed on one side of the ship. The depth sounder measures the depth of water. A user terminal(40) converts latitude and longitude coordinates collected from the DGPS receiver into TM coordinates. The user terminal displays the TM coordinate on a GIS of river and a dam. The user terminal stores a coordinate value and a water depth value in a database.

Description

Construction method of three-dimensional coordinate database of rivers and dams using GIS, Digi-PS, and echo sounder and its system and simulation method using the same SOUNDER}

The present invention relates to a method of constructing a three-dimensional coordinate database of rivers and dams using GIS, DGPS and echo sounder, and to simulating the volume of rivers and dams in a three-dimensional shape using the values stored in the database.

Accurate volumetric data on water stored in rivers and dams is needed for drought and flooding, and for water management.

However, since basic data such as the depth and volume of rivers and dams surveyed at the time of dam design are changed as sediment accumulates on the bottom, afterwards, it is necessary to identify water storage in preparation for water quality management or drought, If dredging is to be done, it is necessary to re-examine the sedimentation of the bottom.

Conventionally, in order to investigate the sedimentation status or shape of the underwater bottom to obtain dredging information of rivers and dams, the divers and the probe equipped with the exploration equipment are moved to a place requiring measurement, and the divers enter and examine the bottom. In addition, water pollution and environmental pollution are inevitable, and it is difficult to accurately and systematically obtain data on the depth of the place where measurement is needed and the overall shape of the bottom surface. Based on this, it was difficult to accurately obtain three-dimensional information of the bottom surface.

In addition, large exploration boats carrying exploration equipment and exploration personnel must be moved to rivers and dams, resulting in longer investigation periods, economic losses and environmental pollution caused by increased equipment operation and labor costs, as well as in underwater operations. There is also a risk of safety accidents, such as workers' lives, which can occur.

In addition, since the obtained information is used only once, it is necessary to build a separate database so that the surveyed data can be used in a timely manner afterwards.

The present invention is to solve the problems described above, an embodiment of the present invention, collecting the GIS information of the rivers and dams, latitude and longitude coordinates while the vessel equipped with the DGPS receiver and echo sounder is moved And measuring depth, converting latitude and longitude coordinate values into TM coordinate values, and storing TM coordinate values and depth values in a database, saving measurement time and cost, and storing the stored data. It relates to the construction of three-dimensional coordinate database of rivers and dams using GIS, DGPS and echo sounder that can be utilized as needed.

According to a preferred embodiment of the present invention, the method comprises: collecting GIS information of rivers and dams, measuring latitude and longitude coordinates and depth while moving a ship equipped with a DGPS receiver and an echo sounder, and latitude and longitude coordinates; A method for constructing a three-dimensional coordinate database of rivers and dams using GIS, DGPS, and echo sounder, including converting values into TM coordinate values, and storing TM coordinate values and depth values in a database is provided.

According to one embodiment of the present invention, it is possible to accurately and easily grasp the bottom surface of the river and dam at the same time as the movement of the ship, it is possible to reduce the time and cost of the measurement, and to establish a separate database By storing the collected data, it can be recycled again when necessary.

In addition, by implementing the three-dimensional shape of the bottom surface of the river and dam using the measured data, water quality management and bottom dredging can be efficiently performed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a method of constructing a three-dimensional coordinate database of a river and a dam using a GIS, a DGPS, and an echo sounder, a system, and a simulation method using the same according to an embodiment of the present invention will be described with reference to the accompanying drawings. Shall be. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

In addition, the following examples are not intended to limit the scope of the present invention but merely illustrative of the components set forth in the claims of the present invention, which are included in the technical spirit throughout the specification of the present invention and constitute the claims Embodiments that include a substitutable component as an equivalent in the element may be included in the scope of the present invention.

Example

1 is a perspective view showing a three-dimensional coordinate database construction system of rivers and dams using GIS, DGPS and echo sounder according to an embodiment of the present invention, Figure 2 is a conceptual diagram of the system, Figure 3 is an embodiment of the present invention 4 to 12 illustrate a screen displayed on a user terminal by a dedicated application from a database. FIG. 4 to FIG. 12 illustrate a method for constructing a three-dimensional coordinate database of rivers and dams using GIS, DGPS and echo sounder.

1 and 2, the three-dimensional coordinate database construction system 10 of rivers and dams using GIS, DGPS and echo sounder according to an embodiment of the present invention, the DGPS receiver to obtain the current position information 20, an echo sounder 30 for measuring the depth of the water, and a user terminal 40 incorporating GIS information on rivers and dams, all of which operate on the water level of the rivers and dams. To be mounted on the vessel 60 can be used.

Hereinafter, a three-dimensional coordinate database construction system of rivers and dams using GIS, DGPS, and echo sounder according to an embodiment of the present invention will be described with reference to the flowchart shown in FIG. 3.

Here, the DGPS receiver 20 includes a GPS receiver 21 and a BEACON receiver 22. The GPS receiver 21 is provided with coordinate information provided from the satellite 210, and the BEACON receiver 22 is grounded. Error correction information according to the Radio Technical Commission for Maritime (RTCM) protocol provided from the base station 220 is received through a medium wave signal.

At this time, the DGPS receiver 20 corrects the received coordinate information by using error correction information, calculates a more accurate coordinate value, and provides the user terminal 40 to be described later based on the National Marine Electronics Associate (NMEA) protocol. do.

In addition, the DGPS receiver 20 and the user terminal 40 may be connected by RS232C serial communication, and the user terminal 40 provided with the coordinate value in which the error is corrected may be connected to the WGS84 (World Geodetic System 1984) coordinate system. Latitude and longitude can be displayed, preferably converted to TM coordinates and then displayed together with the data of the pre-input GIS map unit to display the position of the vessel on the GIS and move the vessel as shown in FIG. The path can be stored in the database 41.

One side of the vessel 60 is provided with an echo sounder (echo sounder) (30). The echo sounder 30 emits sound waves that last a very short time at the surface below the surface, and the emitted sound waves propagate while spreading in all directions.

Here, some of the sound waves propagate vertically, some of them are transmitted through the bottom surface, but most of them are reflected to reach the surface of the water. At this time, the sound wave signal is diffused to a certain range, but the sound wave signal near the vertical direction is most strongly at the flat bottom surface. Is detected.

Therefore, the time difference between the transmission sound wave and the reception sound wave can be accurately measured, and the depth of water can be calculated by knowing the speed of sound. Since this calculation method corresponds to a well-known fact, a detailed description thereof will be omitted.

In this case, the signal recognized by the echo sounder 30 is converted by the controller 31 and input to the user terminal 40 through the RS232C communication port, and the measured depth value is stored in the database 41.

The user terminal 40 is a terminal used by a user in an online or offline environment, and includes a desktop such as a personal computer (PC), a notebook, and a mobile communication terminal such as a cellular phone, a PCS, a PDA, and the like, which provides geographic information. It may include a navigation device for providing other geographic information.

Here, the user terminal 40 objectizes the geographic information stored in the database 41 in units of GIS maps and displays them on the screen, and performs the function so that the user can check the object information. ) Can be displayed on the screen as shown in FIG.

In addition, as shown in Figure 6, the latitude and longitude coordinate values input from the above-described DGPS receiver 20 is converted to the TM coordinate value and displayed with the GIS map, thereby accurately correcting the current position of the vessel 60 in real time In addition, by connecting and displaying coordinate values stored in the database 41 in units of time, as shown in FIG. 7, a movement path of the ship 60 may be displayed as time passes.

In addition, as shown in FIG. 8, the measured depth value is displayed together with the GIS map divided into a certain grid, thereby simulating and showing a change in depth depending on the position of the water surface.

At this time, the ship 60 is randomly divided and the automatically collected depth value is divided into regular grid intervals (1m, 3m, 5m, 10m, 20m, 50m, etc.) in the horizontal and vertical directions, and any position within the grid. By calculating the depth at, we can derive the depth at the portion not directly measured.

On the other hand, the three-dimensional shape of the bottom surface can be simulated three-dimensionally by calculating the measured coordinate values and the depth value, which is illustrated in FIG. 9, and FIG. 10 shows the change in the position of the bottom surface by cutting a randomly selected bottom surface. The deposit amount according to the present invention is shown, and as shown in FIG. 11, the total area of the dam and the capacity of the stored water may be calculated and displayed.

Water quality measurement of dams and streams is performed by water quality measurement sensor 50, which is a chlorophyll sensor, dissolved oxygen sensor, pH sensor, turbidity sensor, temperature sensor and solar radiation sensor. It may be made of any one or a combination thereof.

At this time, the sampling point for measuring the water quality can be arbitrarily selected by the user, for example, 3m, 5m, 7m lower from the water surface, 3m from the bottom of the pump water after pulling up the water, the water quality measurement sensor (50 By measuring the water quality for each sample and storing the measured value in the database 41, it can be displayed on the screen of the user terminal 40 as shown in Figure 12 when necessary.

As described above, according to an embodiment of the present invention can simultaneously collect the data of the bottom surface at the same time as the movement of the vessel 60, it is possible to reduce the measurement time and cost and the collected data is the database 41 It can be simulated in 3D shape afterwards, and it can be used as basic and policy data for water quality management and improvement such as dredging by grasping accurate depth and capacity to area.

1 is a perspective view showing a three-dimensional coordinate database construction system of rivers and dams using GIS, DGPS and echo sounder according to an embodiment of the present invention.

2 is a conceptual diagram of a three-dimensional coordinate database construction system of rivers and dams using GIS, DGPS and echo sounder according to an embodiment of the present invention.

3 is a flowchart illustrating a method for constructing a three-dimensional coordinate database of rivers and dams using GIS, DGPS and echo sounder according to an embodiment of the present invention.

4 to 12 are screens displayed on the user terminal by a dedicated application from a database.

Explanation of symbols on the main parts of the drawings

10: 3D coordinate database construction system of rivers and dams using GIS, DGPS and echo sounder

20: DGPS Receiver 21: GPS Receiver

210: satellite 22: BEACON receiver

220: ground base station 30: echo sounder

31: controller 40: user terminal

41: database 50: water quality measurement sensor

60: ship

Claims (6)

Collecting GIS information of rivers and dams; Measuring latitude and longitude coordinates and depth while the vessel equipped with the DGPS receiver and the echo sounder is moved; Converting the latitude and longitude coordinate values into TM coordinate values; And And storing the TM coordinate value and the depth value in a database. 3. The method of claim 3, further comprising: a GIS, a DGPS, and an echo sounder. The method according to claim 1, Measuring at least one of chlorophyll, DO, turbidity, pH, water depth, temperature and insolation, and storing the measured value in the database, the river and dam using GIS, DGPS and echo sounder 3D coordinate database construction method. A DGPS receiver mounted on a ship moving on the surface of rivers and dams, and obtaining current position information of the ship; An acoustic echo sounder installed on one side of the vessel to measure the depth of water; And GIS, DGPS and echo sounder, comprising; a user terminal for converting the latitude and longitude coordinates collected from the DGPS receiver to TM coordinates to be displayed on the GIS of rivers and dams, and stores the coordinates and the depth value in a database 3D Coordinate Database Construction System for Rivers and Dams. The method according to claim 3, A system for constructing a three-dimensional coordinate database of rivers and dams using GIS, DGPS and echo sounder, further comprising at least one water quality measurement sensor for detecting a physical quantity related to the water quality, and a water level measurement sensor for measuring the current water level. The method according to claim 4, The water quality measurement sensor is a chlorophyll (chlorophyll) sensor, DO (dissolved oxygen) sensor, pH sensor, turbidity sensor, temperature sensor and solar radiation sensor using any one or a combination thereof, characterized in that using the echo sounder 3D coordinate database construction system for rivers and dams. Comparing the coordinate values and the depth values stored in the database with the GIS information of the rivers and dams collected in advance by the method of claim 1, the total area and volume of the rivers and dams are calculated and displayed in three dimensions. 3D coordinate simulation method of rivers and dams using GIS, DGPS and echo sounder.

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