KR102608741B1 - Underground facility survey survey system using GPS - Google Patents

Abstract

The present invention relates to an underground facility survey system using GPS. More specifically, it uses a GPS-integrated wireless communication base to confirm accurate coordinates and uses smart markers installed together during construction work on underground facilities. An improved underground facility survey system using GPS is used to collect information such as type, location information, burial depth, and burial date of underground facilities through an improved GPS system to efficiently collect information for building numerical maps related to underground facilities. It's about.

Description

Underground facility survey survey system using GPS}

The present invention relates to an underground facility survey system using GPS in the field of surveying technology. More specifically, it verifies accurate coordinates using a GPS-integrated wireless communication base and is installed together during construction work on underground facilities. Underground facilities using improved GPS to efficiently collect information for building numerical maps related to underground facilities by collecting information such as type, location information, burial depth, and burial date of underground facilities through a smart marker. It is about surveying and surveying systems.

Water supply and sewage lines, various communication lines, and various infrastructure facilities (hereinafter referred to as “underground facilities”) for constructing urban areas are stored and protected by being buried underground.

Therefore, after the underground facility is buried, it cannot be exposed to the outside, so the buried location and type of the underground facility cannot be known from the ground.

However, in order to repair and manage problematic underground facilities in the event of an emergency, the buried location of the underground facility must be accurately confirmed, and the confirmed location must be recorded so that the relevant underground facility subject to search can be effectively managed.

Previously, multiple measurement workers were required to confirm the location of underground facilities and record them.

Accordingly, the location of the relevant underground facility is measured and calculated using open and public surveying equipment such as the total station on the ground.

However, as the unit price of services for measuring the location of underground facilities decreased and labor costs increased, a phenomenon of avoidance of service requests for measuring the location of underground facilities occurred. However, the location measurement results of underground facilities are used not only as data for the smooth protection and management of underground facilities, but also as important basic data during civil engineering and building construction in adjacent areas. Therefore, the location measurement of underground facilities is performed on urban infrastructure. It is an essential and important task in the process of collecting information.

In addition, the location measurement results of underground facilities are used as important basic data not only for the protection and management of the underground facilities, but also for civil engineering and building construction in adjacent areas as described above, so the reliability and accuracy of the location measurement results are very high. It is important.

Therefore, a method that can perform the position measurement of underground facilities economically while also ensuring the accuracy and reliability of the measurement results is required.

Republic of Korea Patent Registration No. 10-1944445 (2019.01.25.) “Geodetic surveying device for underground facilities using GPS”

The present invention was created in response to a request for supplementation as described above, and uses a GPS-integrated wireless communication base to confirm accurate coordinates and identify the type and location of underground facilities through smart markers installed together during construction work. The main purpose is to provide an improved underground facility survey system using GPS to efficiently collect information such as information, burial depth, and burial date to build a digital map related to underground facilities.

The present invention is a means for achieving the above-mentioned object, including an unmanned aerial vehicle (10), a management server (20) capable of wireless communication with the unmanned aerial vehicle (10), and a smart marker installed in a buried underground facility and teaching the unmanned aerial vehicle (10). (30) and a communication satellite (40) that provides the current coordinates of the unmanned aerial vehicle (10) in real time through satellite communication with the unmanned aerial vehicle (10). In the underground facility surveying and surveying system using GPS;

The unmanned aerial vehicle (10) includes a controller (11) that includes a memory and controls flight, and communicates wirelessly with the management server (20) according to a control signal from the controller (11) to provide flight area information and a map of the flight area. A wireless communication module 12 that receives information, and a marker reader 15 that communicates with a smart marker 30 installed in the flight area under the control of the controller 11 and receives underground facility information from the smart marker 30. ), a stereo camera 13 that is attached and installed on one side of the marker reader 15 and photographs the flight area according to a control signal from the controller 11, and a communication satellite 40 and an unmanned aerial vehicle (10) through satellite communication. ) to a flight area with predetermined coordinates and a GPS receiver (14) that outputs satellite communication information to the controller (11) to fly within the flight area, and compresses the image captured by the stereo camera (13) to a certain size. It includes a video compressor (16) that transmits to the management server (20);

The management server 20 selects the flight area in which the unmanned aerial vehicle 10 will fly, provides coordinate values to fly and map information about the flight area, and reads the image captured by the stereo camera 13 using machine learning techniques. An image reader (22) that checks changes in terrain features around underground facilities and extracts coordinate information by comparing images of confirmed features with existing images, and a coordinate mapper that updates map information by displaying the extracted coordinate information on a digital map. (24) An underground facility survey system using GPS is provided.

According to the present invention, accurate coordinates are confirmed using a wireless communication base integrated with GPS, and information such as the type, location information, burial depth, and burial date of the underground facility is provided through a smart marker installed together during the construction work of the underground facility. By collecting , improved effects can be obtained to efficiently collect information for building digital maps related to underground facilities.

1 is an exemplary block diagram of a system according to the present invention.
Figure 2 is an exemplary side cross-sectional view of an aeronautical geodetic unit constituting a system according to the present invention.
and
Figure 3 is an exemplary inverted perspective view of Figure 2.

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

Prior to describing the present invention, the following specific structural and functional descriptions are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms. It should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the specification. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

As shown in the examples of Figures 1 and 2, the system according to the present invention includes an unmanned aerial vehicle (10) such as a drone, a management server (20) capable of wireless communication with the unmanned aerial vehicle (10), installed in a buried underground facility, and the unmanned aerial vehicle (10). ) and a communication satellite 40 that provides the current coordinates of the unmanned aerial vehicle (10) in real time through satellite communication with the unmanned aerial vehicle (10).

At this time, the unmanned aerial vehicle (10) wirelessly communicates with the management server (20) according to a control signal from the controller (11) and the controller (11), which includes a memory and controls the flight, to provide flight area information and the flight area. A marker reader that communicates with a wireless communication module (12) that receives map information and a smart marker (30) installed in the flight area under the control of the controller (11) and receives underground facility information from the smart marker (30). (15), a stereo camera (13) attached to one side of the marker reader (15) and photographing the flight area according to a control signal from the controller (11), and a communication satellite (40) and an unmanned aerial vehicle (UAV) through satellite communication. A GPS receiver (14) that moves (10) to a flight area with predetermined coordinates and outputs satellite communication information to the controller (11) so that it can fly within the flight area, and the image captured by the stereo camera (13) is converted to a certain size. It includes a video compressor (16) that compresses and transmits it to the management server (20).

In addition, the management server 20 selects a flight area in which the unmanned aerial vehicle 10 will fly, provides a flight range (coordinate value), and also provides map information about the flight area.

In addition, the management server 20 further includes an image reader 22 and a coordinate mapper 24.

Therefore, the image captured by the stereo camera 13 is read using machine learning techniques to check changes in terrain features around the underground facility, and the image reader 22 extracts coordinate information by comparing the confirmed feature image with the existing image. The extracted coordinate information is displayed on the digital map by the coordinate mapper 24 to update the map information.

In addition, the smart marker 30 has a unique identification number, is classified by frequency according to the type of underground facility, and is a type of indicator used to detect the burial depth. This smart marker 30 stores pipe type, depth measurement, ID assignment, and attribute information, and is configured to transmit the relevant information by communicating with a reader.

The smart marker 30 is installed buried close to the ground surface to enable wireless communication, or the corresponding antenna is connected and installed to extend to the ground surface.

And, the communication satellite 40 is a satellite that implements GPS (Global Positioning System), that is, a satellite navigation system.

These communication satellites (40) consist of 24 GPS satellites that continuously rotate in the Earth's atmosphere in different orbits, and through this, signals from four or more satellites can be obtained from any place at any time on Earth, allowing accurate location values to be obtained. give.

Therefore, while photographing the flight area, information on underground facilities in the area is received through communication with the smart marker 30 and then transmitted to the management server 20. At the same time, surrounding images are also transmitted to allow the management server 20 to After reading, it can be reflected in the numerical map.

This work provides the information necessary for subsequent construction work and management of underground facilities by allowing underground facility information to be immediately confirmed and measured even after a significant amount of time has passed after the underground facility has been constructed.

Meanwhile, Figure 3 is an exemplary diagram of a geodetic unit (UT) attached and detachable to the lower part of the unmanned aerial vehicle 10, and is shown upside down for convenience of explanation. That is, it is attached and detached to the bottom of the unmanned aerial vehicle (10) in the same form as shown in FIG. 2, but is shown upside down and flipped 180° for ease of understanding.

Referring to Figures 2 and 3, the geodetic unit (UT) constituting the system according to the present invention is attached and detachable to the lower surface of the unmanned aerial vehicle (10) so as to detect the ball-type smart marker (30) as in the example.

Then, when burying underground facilities, it communicates with the smart markers 30 installed at regular intervals, and the position values (x, y, z) of the smart marker 30, that is, three-dimensional coordinate values, and the smart marker 30 By using the ID value as the basic key, it is possible to read and store survey data and other attribute information related to underground facilities.

In addition, the marker reader 15, which detects the presence or absence of the smart marker 30 and reads attribute information, is mounted on the geodetic unit (UT).

That is, the geodetic unit (UT) includes a base 200 that is detachable from the lower surface of the unmanned aerial vehicle 10, a step motor 210 fixed to the center of the lower surface of the base 200 and connected to the controller 11, and the step motor 210. A guide chamber 220 that is fixed to the motor shaft 212 of the motor 210 and can be rotated, a fixed block 230 that slides along the guide chamber 220, and a device that moves the fixed block 230. A screw shaft 240, a shaft motor 250 that rotates the screw shaft 240 and is connected to a controller 11, and a marker reader 15 controlled by the controller 11 are mounted, and the fixed block It includes a reader holder 260 fixed on (230) and a stereo camera 13 installed on one side of the reader holder 260 and controlled by the controller 11.

At this time, the stereo camera 13 can be used to capture terrain information and merge it with underground facility exploration information.

In addition, a fixing disc 262 is fixed to the reader fixing stand 260, a fixing bar 264 is fixed vertically on the fixing disc 262, and a marker reader 15 is placed on the cross section of the fixing bar 264. is installed.

In addition, the fixing block 230 is seated on a box-shaped guide chamber 220 with an open top and is assembled so that it can slide within it.

In this case, although not specifically shown, both sides of the open end of the guide chamber 220 are vertically bent in directions facing each other to prevent the fixing block 230 from moving downward.

In addition, a screw shaft 240 is screwed through the center of the fixing block 230, and the other end of the screw shaft 240 is connected to the motor shaft of the shaft motor 250, and the shaft motor 250 is It is fixed on a block provided at one end of the guide chamber 220.

Therefore, the fixing block 230 moves in a linear reciprocating direction according to the rotation direction of the shaft motor 250, and the shaft motor 250 can also be driven and controlled by a remote control, and the power for driving the motor is a battery. do.

Additionally, the step motor 210 can rotate the guide chamber 220 at a certain angle under the control of the controller 11.

Therefore, the marker reader 15 can detect within a very wide radius, thereby increasing the detection efficiency by increasing the detection radius.

In addition, the surface of the guide chamber 220 is coated with a friction resistance liquid to improve sliding properties by lowering the frictional resistance of the fixing block 230 and to enhance waterproofing, water resistance, and corrosion resistance.

At this time, the friction resistance solution is 3.5 parts by weight of tricalcium phosphate, 12.5 parts by weight of hydroxyproline, 3.5 parts by weight of barium carbonate, and 5.5 parts by weight of bisphenol A-epichlorohydrin-methacrylic acid polymer, based on 100 parts by weight of polycarbonate resin. It is composed by mixing 5.5 parts by weight of benzoyl peroxide (BPO), 3.5 parts by weight of cyclomethicone, and 15 parts by weight of dimethyl carbonate.

At this time, polycarbonate resin is a base resin with excellent stain resistance, corrosion resistance, deformation resistance, crack resistance, fire resistance, heat resistance, and durability.

In addition, Tricalcium Phosphate is added to prevent surface contamination by preventing water stains from forming.

In addition, hydroxyproline suppresses the occurrence of surface cracks in the coating layer, prevents cracking, and strengthens corrosion resistance.

In addition, barium carbonate is added to promote cohesion to improve hardenability, to form a smooth surface, and to prevent oxidation and discoloration.

In addition, bisphenol A-epichlorohydrin-methacrylic acid polymer is a material corresponding to CAS number 36425-15-7, which enhances corrosion resistance, corrosion resistance, and anti-pollution properties. It is added for

In addition, benzoyl peroxide (BPO: Benzoyl Peroxide) is further added to improve the rigidity of the coating layer; Cyclomethicone is added to protect the surface by inhibiting oxidation and to enhance durability.

Additionally, dimethyl carbonate is added to increase wear resistance and lubricity to reduce frictional resistance.

In addition, a stopper (STP) protrudes at one end of the guide chamber 220, that is, at the end where the shaft motor 250 is installed, to prevent a collision with the shaft motor 250 by restricting the movement of the fixing block 230. It is configured to do so.

In other words, a stopper (STP) is provided to cushion the collision even in the event of a collision. The stopper (STP) is preferably configured to have a cushioning function by inserting a sponge into a vertically standing rod.

10: Drone
20: Management server
30: Smart marker
40: Communication satellite

Claims (1)

An unmanned aerial vehicle (10), a management server (20) capable of wireless communication with the unmanned aerial vehicle (10), a smart marker (30) installed in a buried underground facility and teaching to the unmanned aerial vehicle (10), and satellite communication with the unmanned aerial vehicle (10). In the underground facility survey system using GPS, which includes a communication satellite 40 that provides the current coordinates of the unmanned aerial vehicle 10 in real time;
The unmanned aerial vehicle (10) includes a controller (11) that includes a memory and controls flight, and communicates wirelessly with the management server (20) according to a control signal from the controller (11) to provide flight area information and a map of the flight area. A wireless communication module 12 that receives information, and a marker reader 15 that communicates with a smart marker 30 installed in the flight area under the control of the controller 11 and receives underground facility information from the smart marker 30. ), a stereo camera 13 that is attached and installed on one side of the marker reader 15 and photographs the flight area according to a control signal from the controller 11, and a communication satellite 40 and an unmanned aerial vehicle (10) through satellite communication. ) to a flight area with predetermined coordinates and a GPS receiver (14) that outputs satellite communication information to the controller (11) to fly within the flight area, and compresses the image captured by the stereo camera (13) to a certain size. It includes a video compressor (16) that transmits to the management server (20);
The management server 20 selects the flight area in which the unmanned aerial vehicle 10 will fly, provides coordinate values to fly and map information about the flight area, and reads the image captured by the stereo camera 13 using machine learning techniques. An image reader (22) that checks changes in terrain features around underground facilities and extracts coordinate information by comparing images of confirmed features with existing images, and a coordinate mapper that updates map information by displaying the extracted coordinate information on a digital map. Contains (24),
The marker reader 15 is mounted on a geodetic unit (UT),
The geodetic unit (UT) is
A base 200 that is detachable from the lower surface of the unmanned aerial vehicle (10);
A step motor 210 fixed to the center of the lower surface of the base 200 and connected to the controller 11;
A guide chamber 220 that is fixed to the motor shaft 212 of the step motor 210 and can be rotated;
A fixed block 230 sliding along the guide chamber 220;
A screw shaft 240 that moves the fixing block 230;
A shaft motor 250 that rotates the screw shaft 240 and is connected to the controller 11;
A reader fixture 260 on which the marker reader 15 controlled by the controller 11 is mounted and fixed on the fixture block 230; Including,
The stereo camera 13 controlled by the controller 11 is installed on one side of the reader holder 260,
A fixing disk 262 is fixed to the reader holder 260, a fixing bar 264 is fixed vertically on the fixing disk 262, and a marker reader 15 is installed on the end face of the fixing bar 264. become,
The fixing block 230 is seated on a box-shaped guide chamber 220 with an open top and is assembled so that it can slide within it,
Both sides of the open end of the guide chamber 220 are bent in directions facing each other so that the fixing block 230 does not deviate from the guide chamber 220,
A screw shaft 240 is screwed through the center of the fixing block 230, and the other end of the screw shaft 240 is connected to the motor shaft of the shaft motor 250, and the shaft motor 250 is a guide chamber. An underground facility survey system using GPS, characterized in that it is fixed on a block provided at one end of (220).

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