KR102474883B1 - Device and Mehtod for measuring underground facility location - Google Patents

Abstract

The present invention relates to an underground facility surveying terminal and a surveying method. According to the present invention, the surveying terminal, which is an underground facility surveying terminal aiming at surveying the coordinate and depth of an underground facility in which at least a part is exposed to an upper side of the ground through excavation construction, can comprise: a camera; a screen unit outputting an image acquired by the camera; a sensor unit providing measurement information in accordance with changes in the position and posture of the surveying terminal; a reference height setting unit setting a reference height of the surveying terminal from the ground surface; a height information provision unit correcting the displacement volume of the surveying terminal on the set reference height and providing the height information of the surveying terminal; and a position information calculation unit calculating the coordinate and depth of the underground facility by using the measurement information provided from the sensor unit and the height information provided from the height information provision unit. According to the present invention, a precise position information of an underground facility can be conveniently and rapidly surveyed through only an image photographing method.

Description

Underground facility surveying terminal and surveying method {Device and Mehtod for measuring underground facility location}

The present invention relates to an underground facility surveying terminal and a surveying method, and more particularly, to an underground facility surveying terminal and a surveying method that can easily and quickly measure accurate location information of an underground facility only through an image capturing method.

In general, numerous infrastructures such as water and sewage pipes, gas pipes, and various communication lines are buried underground for the aesthetics of the city or the safety of people.

For the facilities buried underground (hereinafter referred to as 'underground facilities'), the location information (burial location and depth) of the underground facilities must be accurately identified for efficient management and maintenance. There is a need.

Accordingly, the location information of underground facilities, that is, the buried location and depth, is measured and stored as GIS (Geographic Information System) data and managed.

However, in the case of existing underground facilities, the reliability of the location information stored in GIS is not high due to various factors such as inaccurate surveying and surveying errors. There are problems with maintenance work that are very difficult, such as carrying out construction in the wrong location or repeating unnecessary construction due to errors in location information stored in GIS.

Therefore, in order to verify the reliability of GIS for existing underground facilities, public institutions must conduct a confirmation survey for the underground facility when maintenance work is performed on the underground facility, and GIS according to the result of the confirmation survey. We are obliged to update the information, such as correcting it.

However, despite the mandatory verification survey as above, there are too many cases where verification surveys are not conducted in actual sites. It is only about 41%.

As above, it was investigated that the main reason for the non-conduct of confirmation survey despite the mandatory is the lack of confirmation survey equipment itself or the burden of cost for expensive confirmation survey equipment.

Therefore, in order to increase the reliability of GIS information and achieve efficient management of underground facilities, it is urgently required to develop a device that can easily perform confirmation surveying at the maintenance and repair construction site of underground facilities without the burden of purchasing expensive equipment. something to do.

Registered Patent No. 10-1830956: Underground facility surveying device

The present invention is proposed to solve the above-mentioned conventional problems, and an object of the present invention is to survey underground facilities that can measure accurate location information on underground facilities simply and quickly through only an image capturing method at an underground facility construction site. It is to provide terminals and surveying methods.

As a problem solving means of the present invention for achieving the above object,

An underground facility surveying terminal for measuring the coordinates and depth of an underground facility at least partially exposed to the ground through excavation work, comprising: a camera, a screen unit for outputting an image obtained by the camera, and a location and attitude of the surveying terminal A sensor unit that provides measurement information according to fluctuations, a standard height setting unit that sets a standard height for the ground surface of the surveying terminal, and a height that provides height information of the surveying terminal by correcting the displacement of the surveying terminal to the set reference height. An underground facility surveying terminal comprising an information providing unit and a location information calculating unit for calculating the coordinates and depth of an underground facility using the measurement information provided by the sensor unit and the height information provided by the height information providing unit, an underground facility surveying terminal is disclosed. .

Here, the reference height setting unit, when the camera is directed to the same point on the ground at the first and second positions, which are different from each other, using the measurement information provided at the first position and the measurement information provided at the second position It is possible to set the reference height of the surveying terminal with respect to the ground surface.

In addition, it may further include an augmented reality module for outputting an augmented reality image on a screen by synthesizing a virtual ground mark corresponding to the ground surface to a real image obtained from the camera.

In addition, the location information calculation unit, when the direction of the camera is primarily set so that the virtual ground mark is located above the underground facility, measures information provided from the sensor unit and height information provided from the height information providing unit. When the coordinate value of the underground facility is calculated using the sensor unit and the height information provided by the height information providing unit and the measurement information provided by the sensor unit are in a secondary setting state such that the direction of the camera is downward toward the underground facility, and the above The depth of the underground facility can be calculated using the calculated coordinate values of the underground facility.

In addition, as a problem solving means of the present invention for achieving the above object,

As a method for a surveying terminal to measure the coordinates and depth of an underground facility at least partially exposed to the ground through excavation work, (a) outputting an image of a camera through a screen unit; (b) When a touch input occurs through the screen unit while the camera is facing the ground, setting a reference height using measurement information provided from the sensor unit and then correcting the displacement to generate real-time height information; (c) A virtual ground mark corresponding to the ground surface is created and visualized in the image of the screen unit; If it occurs, calculating the coordinate value of the underground facility using the measurement information and height information at the corresponding location; When an input is generated, an underground facility surveying method including the step of calculating a depth of an underground facility using measurement information, height information, and coordinate values of the underground facility at a corresponding location is initiated.

Here, the step (b) is the step of receiving measurement information at the location when a touch input is generated through the screen unit when the camera is facing a specific point on the ground at the first location, and After moving to a second location, when a touch input occurs through the screen unit while the camera is facing the specific point, receiving measurement information at the corresponding location, and providing measurement information at the first location and the second location. It may include setting a reference height using measurement information in , and providing real-time height information by correcting a displacement amount to the reference height according to the location movement of the surveying terminal after setting the reference height.

According to the underground facility surveying terminal and surveying method according to the present invention,

Without the need to purchase or use expensive and complicated surveying equipment, accurate location information of underground facilities can be surveyed easily and quickly through direction adjustment and touch input of the surveying terminal at the construction site.

In addition, according to the above advantages, confirmation surveying can be performed more easily than before, and it is expected that the reliability of GIS can be improved through this, and maintenance and management of underground facilities will be performed more efficiently.

In addition, it is added that, in addition to the specifically specified effects as described above, unique effects that can be easily derived and expected from the characteristic configuration of the present invention may also be included in the effects of the present invention.

1 is a diagram schematically illustrating an excavated underground facility and a surveying terminal;
2 is a block configuration diagram illustrating the configuration of a surveying terminal according to an embodiment of the present invention;
3 and 4 are diagrams each illustrating a concept for calculating the reference height of the surveying terminal,
5 is a diagram illustrating a concept for calculating coordinate values of underground facilities,
6 is a diagram illustrating a concept for calculating the depth of an underground facility,
7 is a diagram illustrating the flow of a surveying method according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of an underground facility surveying terminal and a surveying method according to the present invention will be described in detail with reference to the accompanying drawings.

This embodiment is provided to more clearly explain the present invention to those with average knowledge in the art, and the shape, size, number, spacing between elements, etc. of elements in the accompanying drawings provide a clearer explanation. It may be reduced or exaggerated for emphasis, and is not limited to those illustrated in the drawings unless otherwise specifically limited.

In addition, in describing the embodiments, if a certain component is described as “provided”, “formed”, “installed”, “coupled”, “fixed”, or “connected” to another component, , It may be provided, formed, installed, coupled, fixed, or connected directly to the other components, but it should be understood that other components may exist in the middle.

In addition, terms such as “~~unit”, “~~means”, and “~~module” may mean a unit that processes at least one function or operation, which is hardware or software or a combination of hardware and software. can be implemented

In addition, terms indicating directions such as front, back, left, right, up, down, etc. are only used to describe the direction shown and observed in the drawings, and these terms will also change if the direction shown and observed is different. It should be understood that it can.

In addition, when it is determined that the technical features of the present invention may be unnecessarily obscured as matters already obvious to those skilled in the art, such as known functions or known configurations related to the description of the embodiments, the detailed I will omit the explanation.

The surveying terminal 100 of the present invention is for conveniently measuring the location information (coordinates and depth (burial depth)) of the underground facility 300 only through an image capturing method, as illustrated in FIG. 1, the present invention The use of the surveying terminal 100 according to is based on a state in which at least a portion of the underground facility 300 buried underground through excavation work is exposed to the ground.

That is, in the case of an underground facility 300, for example, a water pipe, excavation work is performed to repair or replace leaks. It is legally mandated, and the surveying terminal of the present invention is the location of the underground facility 300 through only the video recording method for the construction site when exposure of at least a portion of the underground facility 300 buried through excavation construction occurs. It is to make information easy and convenient to obtain.

The surveying terminal 100 according to the present invention is a mobile device that can be carried by a user who performs the surveying work of the underground facility 300, and is a tablet (Tablet PC), smart phone (smart phone), laptop (Laptop) without particular limitation. ), notebooks (NoteBook), PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), etc., various devices that the user can carry and use may be included.

2 illustrates a block configuration diagram of an underground facility surveying terminal (hereinafter, abbreviated as “surveying terminal 100”) according to an embodiment of the present invention.

As illustrated in FIG. 2, the surveying terminal of the present invention includes a camera 10, a screen unit 20, a sensor unit 30, a reference height setting unit 40, and a height information providing unit 50. ), an augmented reality module 60, and a location information calculation unit 70 may be included.

Of course, the above components are only examples of those related to the features of the present invention, and it is natural that other components for implementing various functions of the mobile device may be further included as needed.

For example, a wireless communication unit for transmitting/receiving data with a GIS server or other wireless communication, a power supply unit for supplying power to a mobile device, a storage unit for storing various data and programs, a voice input/output means for inputting/outputting voice or sound, etc. Various components may be further included. However, since these components are known in the art and are not related to the characteristics of the present invention, unnecessary description thereof will be omitted.

The camera 10 acquires a real image of the underground facility 300 to be surveyed and its surroundings, and the real image obtained by the camera 10 can be output through the screen unit 20 and displayed.

The screen unit 20 has a display function of outputting and displaying an image acquired by the camera 10 .

The screen unit 20 may have a display function of an image obtained by the camera 10 as well as a function of an input means capable of receiving various commands from a user through a touch. It can be implemented as a touch screen.

The sensor unit 30 may provide measurement information according to position change or posture change of the measurement terminal 100 . That is, the sensor unit 30 may provide measurement information by detecting and measuring the positional coordinates of the surveying terminal 100, the angle according to the inclination, and the amount of displacement or rate of change according to the movement of the position.

This measurement information measured by the sensor unit 30 is provided to the reference height setting unit 40, the height information providing unit 50, and the location information calculating unit 70 to be described later to calculate the height of the measurement terminal 100 or It can be used to calculate the location information (coordinates and depth) of the underground facility 300.

The sensor unit 30 may be a combination of various sensors configured to detect a positional movement or attitude change of the measurement terminal 100 .

For example, the sensor unit 30 includes a GPS that provides latitude and longitude coordinate information, a gyroscope sensor that provides angle information according to an inclination, an acceleration sensor that provides displacement information, and a geomagnetic sensor that provides azimuth information. It may be a combination including

The reference height setting unit 40 is a part for setting an initial reference height for the ground surface of the surveying terminal 100 .

The height information of the surveying terminal 100 should be provided as a height value relative to the ground surface around the exposed underground facility 300, and the reference height may be a standard for calculating and providing such a height value as height information. . That is, the reference height may be defined as an initial height value of the measurement terminal 100 serving as a reference for providing height information of the measurement terminal 100 .

The reference height setting unit 40 may basically be implemented to calculate a reference height value using measurement information provided from the sensor unit 30 when the camera 10 is set to face the ground surface.

For example, as illustrated in the conceptual diagrams of FIGS. 3 and 4, the reference height setting unit 40 has the camera 10 at the first position (A) and the second position (B), which are different from each other, respectively, on the ground surface. When set to face the same point (C), the measurement information provided from the sensor unit 30 at the first position (A) and the measurement information provided from the sensor unit 30 at the second position (B) It is possible to calculate the initial reference height value (h1) of the surveying terminal 100 for the ground surface by using.

That is, when the camera 10 is set from the first position (A) to a point (C) on the ground, the reference height setting unit 40 moves the sensor unit 30 to the first position (A). Coordinate information and angle information in can be provided.

Then, when the measurement terminal 100 is slightly moved and the camera 10 is set to face the same point C on the ground at the second position B, the reference height setting unit 40 is the sensor unit ( 30), coordinate information, angle information, and displacement information at the second position (B) can be provided.

And, using the measurement information provided from the first location (A) and the measurement information provided from the second location (B) as above, the reference height value (h1) of the surveying terminal 100 is calculated through the following formula calculation can be set by

Looking in detail with reference to FIGS. 3 and 4, first, as illustrated in FIG. 3, an x-y coordinate system with the earth surface as the x-axis is set, and the point A, which is the first position of the camera 10, is (x1, y1 ), point B, which is the second position of the camera 10, is (x2, y2), and point C, which is the same point on the ground toward which the camera 10 is facing, is assumed to be (x3, y3).

Then, as illustrated in FIG. 4 , the x-axis is moved in parallel to the height of the first camera 10, not the ground, and point A, which is the position of the first camera 10, is set as the origin (0, 0).

Then, point B becomes (x2-x1, y2-y1), where x2-x1 and y2-y1 are relative position values of points A and B, which can be known through displacement information of the sensor unit 30, These x2-x1 and y2-y1 are replaced by constants a and b. That is, point B becomes (a, b).

Arranged as above,

- The linear function of the line segment AC is as follows,

- The linear function of line segment BC is as follows.

- At this time, since line segment BC passes through point B(a, b), substituting (a, b) for line segment BC gives the following result.

- The value of h2 can be obtained through the above formula, and if h2 is substituted, the linear function of the segment BC is as follows

- Then, since point C is the solution of the line segment AC function and the line segment BC function, substitute (x3, y3) for each function to obtain y3 through the calculation of the following simultaneous equations.

∴

∴

- The absolute value of y3 obtained through the above calculation formula is set as the initial reference height (h1) of the surveying terminal (100).

After the reference height of the measurement terminal 100 is set in the reference height setting unit 40, the height information providing unit 50 provides real-time height information of the measurement terminal 100 based on the reference height part of doing

That is, after the reference height is set in the reference height setting unit 40, when the position change of the measurement terminal 100 occurs, the height value of the measurement terminal 100 is changed. Real-time height information according to the location change of the terminal 100 is generated and provided.

The height information providing unit 50 may provide real-time height information at a corresponding position that has changed through correction of adding or subtracting displacement amount information provided from the sensor unit 30 to a set reference height value.

For example, the height information providing unit 50 adds a displacement to the reference height value when the measurement terminal 100 is moved upward from the position at the time of setting the reference height value to provide real-time height information at the corresponding position, When the surveying terminal 100 is moved down, the amount of displacement is subtracted from the reference height value to provide real-time height information at the corresponding position.

The augmented reality module 60 may perform various functions for implementing augmented reality in the measurement terminal 100 .

That is, the augmented reality module 60 may output an augmented reality image to the screen unit 20 by synthesizing a virtual image with a real image obtained from the camera 10 .

For example, when the reference height is set in the reference height setting unit 40, the augmented reality module 60 generates a virtual ground mark (v.g) corresponding to the actual ground surface, and the camera 10 obtains the The augmented reality image can be visualized by synthesizing the virtual ground surface formula (v.g) created above with the real image and outputting it on the screen unit 20 .

The virtual ground mark (v.g) may be referred to as a mark representing a virtual ground surface corresponding to the actual land surface, and for example, it may consist of a substantially rectangular outer line and a cross line orthogonal to the inside of the outer line in the form of a cross. can

After the reference height is set in the reference height setting unit 40, the augmented reality module 60 detects the ground surface in the real image of the screen unit 20 based on the height information provided by the height information providing unit 50 thereafter. In addition, while the virtual ground marker is positioned corresponding to the actual ground surface in the image of the screen unit 20, when the direction of the camera 10 is changed, the virtual ground marker (v.g) can be controlled to move along the actual ground surface in the image. have.

That is, the virtual ground mark (v.g) corresponds to the actual ground surface in the image of the screen unit 20, so when the camera 10 is directed to the excavated part where the underground facility 300 is exposed, the screen unit In the image of (20), the virtual ground marker (v.g) can be located on the ground surface part (the ground surface part removed by excavation) above the underground facility 300.

In addition, the augmented reality module 60 may generate and output a target line on the screen unit 20 where the image of the camera 10 is output.

The target line may be formed in a crosshair shape, and the user may more easily set the direction of the camera 10 so that the camera 10 accurately faces the target point through the target line. That is, the direction of the camera 10 can be easily adjusted by positioning the target line visualized in the real image of the screen unit 20 at the target point.

This augmented reality module 60 may be implemented using Google's ARCore or Apple's ARKit.

The location information calculating unit 70 finally calculates the location information of the underground facility 300 to be surveyed using the measurement information provided from the sensor unit 30 and the height information provided from the height information providing unit 50. part of doing

Location information calculation by the location information calculation unit 70 may be performed in a state in which the direction of the camera 10 is set to face the exposed underground facility 300 .

That is, the location information calculation unit 70 directs the camera 10 toward the underground facility 300 in a state where the surveying terminal 100 is located at a point spaced a certain distance from the exposed underground facility 300. In the set state, the coordinates and depth of the underground facility 300 may be calculated using the measurement information provided from the sensor unit 30 and the height information provided from the height information providing unit 50 .

Specifically, as illustrated in the conceptual diagram of FIG. 5, the location information calculation unit 70 is positioned on top of the underground facility 300 where the virtual ground mark (v.g) in the image of the screen unit 20 is exposed. When the direction of ) is set primarily, the coordinate value of the underground facility may be first calculated using the measurement information provided from the sensor unit 30 and the height information provided from the height information providing unit.

That is, as the direction of the camera 10 is adjusted to face the underground facility 300, the virtual ground mark (v.g) in the image of the screen unit 20 moves along the actual ground surface in the image and then moves to the top of the underground facility 300. (That is, in the real image, it can be located in the excavated space).

When the direction of the camera 10 is set so that the virtual ground marker (v.g) is positioned above the underground facility 300, as illustrated in FIG. 5, the coordinate information P1 and angle provided by the sensor unit 30 Using the information (θ1) and the height information (H) provided by the height information providing unit 50, the coordinate value (P2) of the underground facility can be calculated through the following calculation formula.

That is, the coordinates of the underground facility 300 by obtaining the horizontal distance L1 between the measurement terminal 100 and the underground facility 300 and adding the obtained horizontal distance L1 to the coordinate value P1 of the surveying terminal 100. It is to calculate the value (P2).

<Calculation>

- L1 = tanθ1 × H

- P2 = P1 + L1

As above, when the horizontal distance L1 between the measuring terminal 100 and the underground facility 300 and the coordinate value P2 of the underground facility 300 are calculated, the direction of the camera 10 is then downward, and the underground facility 300 ), and at this time, using the measurement information provided from the sensor unit 30, the height information provided from the height information providing unit 50, and the calculated coordinate values of the underground facility 300, The depth of the facility 300 may be calculated.

That is, as illustrated in the conceptual diagram of FIG. 6, when the direction of the camera 10 is set to face the underground facility 300, the location information calculation unit 70 provides angle information θ2 provided from the sensor unit 30. ), and the height information (H) provided by the height information providing unit 50, together with the calculated horizontal distance (L1) between the measuring terminal 100 and the underground facility 300, the underground facility through the following calculation formula The depth (D) of can be calculated.

<Calculation>

- L2 = tanθ2 × H

- L3 = L1 - L2

- D = L3 / tanθ2

After calculating the location information of the underground facility 300, that is, the coordinates P2 and the depth D, the location information calculation unit 70 outputs the calculated location information to be displayed on the image of the screen unit 20 as described above. can make it

In addition, the location information calculation unit 70 may store the image of the screen unit 20 on which the calculated location information is displayed as a photo file and transmit it to the GIS server through wireless communication. The stored photo file may include various information related to surveying, such as coordinates and depth information of the underground facility 300 together with the image of the underground facility 300, and the measurement date and time.

7 illustrates a flowchart of a method in which the surveying terminal 100 having the above configuration calculates location information of the underground facility 300.

As illustrated in FIG. 7 , when a command for surveying is input from the user, the surveying terminal 100 outputs the real-time image acquired through the camera 10 through the screen unit 20 (S101).

At this time, the augmented reality module 600 may create a target line and visualize it in the image of the screen unit 20 . That is, the target line is displayed on the screen unit 20 together with the real image acquired through the camera 10, and therefore the user can check the target line together with the real image through the screen unit 20, and the target line The direction of the camera 10 can be easily adjusted by directing it toward the target point.

Subsequently, when a command for setting a height is input from a user, the measurement terminal 100 sets a reference height, and then generates height information in real time and outputs the generated height information to the screen unit 20 .

In the process of setting the reference height and generating the height information, first, when the camera 10 is directed to a specific point on the ground in a state where the measurement terminal 100 is located at the first position, a user touches the screen unit 20 through the screen unit 20. When an input occurs, measurement information at the first position is provided from the sensor unit 30 (S102).

That is, when the user touches the screen unit 20 in a state in which the direction of the camera 10 is set to face a specific point on the ground at the first location, the measurement terminal 100 detects the sensor unit 30 at the corresponding location. To receive measurement information, that is, measurement information at the first location.

Then, after the measurement terminal 100 is slightly moved to a second position different from the first position, when the camera 10 is directed to the specific point, that is, the same point, the user touches again through the screen unit 20. When this occurs, measurement information at the second position is provided from the sensor unit 30 (S103).

That is, when the user touches the screen unit 20 again after changing only the position from the first position to the second position while keeping the direction of the camera 10 toward the same point on the ground, the measurement terminal 100 detects the sensor unit (30) to receive measurement information at the corresponding location, that is, measurement information at the second location.

Subsequently, the measurement terminal 100 uses the measurement information provided in step S102, that is, the measurement information at the first position, and the measurement information provided at step S103, that is, the measurement information at the second position, through a predetermined calculation formula. Calculate and set the standard height. (S104)

Here, the formula calculation for calculating the reference height using the measurement information at the first position and the measurement information at the second position has been described above in the section describing the configuration of the surveying terminal 100, and overlapping descriptions are omitted. do it with

Subsequently, the measurement terminal 100 generates real-time height information by performing correction of adding or subtracting measurement information provided from the sensor unit 30, in particular, displacement information, to the reference height set in step S104. (S105)

The real-time height information is a height value that changes in real time as the measurement terminal 100 moves, and this height information can be displayed on the screen unit 20 in real time so that the user can check the changed height value. .

When the reference height is set and the height information is generated through the above process, the surveying terminal 100 creates a virtual ground mark (v.g) corresponding to the ground surface and outputs it in the image of the screen unit 20 to visualize it. (S106 )

That is, on the screen unit 20, the virtual ground landmark v.g is synthesized together with the real-time image obtained from the camera 10 and displayed as an augmented reality image.

Subsequently, the surveying terminal 100 calculates the location information of the underground facility 300. First, the location coordinate value of the underground facility 300 is calculated (S107), and then the depth (depth) of the underground facility is calculated (S108). ).

First, in step S107, in a state in which the direction of the camera 10 is primarily set so that the virtual ground mark (v.g) visualized on the screen unit 20 is located above the underground facility 300, the screen unit received from the user. When a touch input is generated through (20), coordinate values of the underground facility 300 are calculated using measurement information and height information at the corresponding location.

That is, the user adjusts the direction of the camera 10 so that the virtual ground marker v.g visualized on the screen unit 20 is moved to the excavated part, and the virtual ground marker v.g is excavated, that is, underground. When located on the top of the facility 300, direction adjustment is stopped and input is performed by touching the screen unit 20.

In this way, when a touch input occurs in a state where the virtual ground mark (v.g) is located on the upper part of the underground facility 300, the surveying terminal 100 uses the measurement information and height information provided at that time to calculate the underground facility (v.g) through a predetermined formula. 300) to calculate the coordinate values.

Here, the calculation formula for calculating the coordinate value of the underground facility 300 using the measurement information and the height information has been described above in the description of the surveying terminal 100, and the overlapping description thereof will also be omitted.

Next, in step S108, when a touch input is generated from the user through the screen unit 20 in a state where the direction of the camera 10 is secondarily set so that the direction of the camera 10 is downward and directly toward the underground facility 300, the measurement information at the corresponding location The depth of the underground facility 300 is calculated using the height information and coordinate values of the underground facility.

That is, when the coordinates of the underground facility 300 are calculated through step S107, the user adjusts the tilt so that the camera 10 faces the underground facility 300 by pointing the camera 10 downward, and then the screen unit 20 ) to input.

In this way, when a touch input occurs in a state in which the direction of the camera 10 is adjusted to face the underground facility 300, the measurement terminal 100 provides the measurement information and height information provided at that time, and the underground facility calculated in step S107 ( 300) to calculate the depth of the underground facility 300 through a predetermined calculation formula.

Here, the calculation formula for calculating the depth of the underground facility 300 using the measurement information, the height information, and the coordinate values of the underground facility is also described above in the section describing the configuration of the surveying terminal 100, which is also overlapping description. will be omitted.

Through the above process, the location information (coordinates and depth) of the underground facility 300 can be calculated, and the location information of the underground facility 300 calculated in this way is stored together with the image of the screen unit 20, and wireless communication is performed. can be transmitted to the GIS server through

As described above, according to the present invention, without the need to purchase or use expensive and complicated surveying equipment, the user carries the surveying terminal at the construction site, and easily and quickly accurately locates the underground facility through only the direction adjustment and touch input of the camera. It can be seen that information can be measured.

In particular, if easy and quick surveying is possible without cost, it will be possible to easily conduct confirmation surveys at most underground facility construction sites, and through this, the reliability of GIS can be improved and maintenance of underground facilities can be performed. and management will be more efficient.

Although the preferred embodiments of the present invention have been described in detail above, the technical scope of the present invention is not limited to the contents described in the above-described embodiments and drawings, and may be modified or modified by those skilled in the art. It will be said that the modified equivalent configuration does not deviate from the scope of the technical idea of the present invention.

The reference numerals for the main parts of the accompanying drawings are as follows.
10: camera 20: screen unit
30: sensor unit 40: reference height setting unit
50: height information providing unit 60: augmented reality module
70: location information calculation unit

Claims (6)

As a method for a surveying terminal to measure the coordinates and depth of an underground facility at least partially exposed to the ground through excavation work,
(a) outputting the image of the camera through the screen unit;
(b) generating real-time height information by correcting displacement after setting a reference height using measurement information provided from a sensor unit when a touch input occurs through a screen unit while the camera faces the ground;
(c) generating a virtual ground mark corresponding to the ground surface and visualizing it in the image of the screen unit;
(d) When a touch input is generated through the screen unit in a state in which the direction of the camera is primarily set so that the virtual ground marker is located on the upper part of the underground facility, the coordinate value of the underground facility is obtained using the measurement information and height information at the corresponding location. Calculating ;
(e) When a touch input is generated through the screen unit in a state where the direction of the camera is set downward to face the underground facility, the location of the underground facility is measured using the measurement information, height information, and coordinate values of the underground facility. Including the step of calculating the depth,
In step (b),
receiving measurement information at the corresponding location when a touch input is generated through the screen unit while the camera is facing a specific point on the ground at the first location;
receiving measurement information at the corresponding location when a touch input is generated through the screen when the camera is directed toward the specific point after being moved to a second location different from the first location;
Setting a reference height using the measurement information provided at the first location and the measurement information provided at the second location;
Comprising the step of providing real-time height information by correcting the amount of displacement to the reference height according to the position movement of the surveying terminal after setting the reference height, underground facility surveying method. delete delete delete delete delete

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