KR20220117109A - Facility displacement measurement monitoring apparatus using moire phenomenon and method thereof - Google Patents

Abstract

The present invention relates to a facility displacement measurement monitoring device using Moire phenomenon and a method thereof, capable of expecting a risk of a collapse of a horizontal member or a vertical member. According to the present invention, the facility displacement measurement monitoring device using the Moire phenomenon includes: an input unit receiving an input of an image of a vertical member image or a horizontal member image photographed in real-time by a camera spaced from a vertical member or a horizontal member with a Moire marker by a predetermined distance; an image processing unit processing the vertical member image or the horizontal member image and inserting a Moire pattern onto a screen; a first measurement unit measuring the number of pixels corresponding to a vertical movement displacement or a horizon movement displacement of an interference pattern generated from the vertical member image or the horizontal member image; a second measurement unit measuring the number of pixels corresponding to a vertical length or a horizontal length of the Moire marker on the screen included in the vertical member image or the horizontal member image; a calculation unit calculating a horizontal displacement or a vertical displacement of the vertical member or the horizontal member by using the number of pixels corresponding to the vertical length or the horizontal length of the Moire marker on the screen and the number of pixels corresponding to the vertical movement displacement or the horizontal movement displacement of the interference pattern; and a determination unit determining riskiness of the vertical member or the horizontal member by comparing a reference value to the calculated horizontal displacement or the calculated vertical displacement of the vertical member or the horizontal member.

Description

Facility displacement measurement monitoring device and method using moiré phenomenon

The present invention relates to a facility displacement measurement monitoring device and method using a moiré phenomenon, and more particularly, to a facility displacement measurement monitoring device using a moiré phenomenon for predicting the risk of collapse of a vertical or horizontal member using a moiré phenomenon in a construction phenomenon and methods thereof.

In general, facilities are classified as obsolete facilities after 30 years from completion, and separate maintenance is required accordingly.

As shown in Figure 1, according to the '2020 Facility Statistical Yearbook' of the 'Korea Facility Safety Diagnosis Association', among the facilities registered in Korea, 16% and 41 %, 73%.

This means that 20 years from now, the aging rate of aging facilities that are more than 30 years old after completion among domestic facilities will increase rapidly to 73% or more. With the enforcement of the ‘Special Act on Management’, maintenance measures are being prepared for aging facilities.

One of the facility maintenance methods is Structural Health Monitoring (hereinafter referred to as "SHM"). SHM refers to a technology for diagnosing the condition of a structure through a sensor network and signal processing, etc. The importance of maintenance and securing safety is emphasized.

Meanwhile, among the various data applied to the SHM, displacement and vibration are used as major measures to indicate the condition of the facility, such as predicting the collapse of the facility.

At this time, the camera image system can simplify the measurement system and significantly reduce the maintenance cost by measuring the behavior of a part or the whole structure instead of a large number of physically attached sensors with one image acquisition, so it is possible to measure displacement and vibration in various fields is attracting attention as

In Korea, not only the aging of the facilities, but also the large daily temperature difference depending on the season, the impact and stimulation acting on the structure from the outside such as cold waves or typhoons, and long-term deformation such as deflection or torsion of the facility due to changes in the mechanical properties of materials This can lead to the collapse of the facility.

Therefore, there is a need for a facility displacement measurement and monitoring method that prevents accidents due to falling behind through continuous safety diagnosis using a camera.

The technology that is the background of the present invention is disclosed in Korean Patent No. 10-1696629 (published on January 17, 2017).

The technical problem to be achieved by the present invention relates to a facility displacement measurement monitoring apparatus and method using a moiré phenomenon for predicting the collapse risk of a vertical or horizontal member using a moiré phenomenon in a construction phenomenon.

According to an embodiment of the present invention for achieving this technical problem, in a facility displacement measurement and monitoring device using a moiré phenomenon, vertical or horizontal photographed in real time through a camera spaced a certain distance from a vertical or horizontal member to which a moiré marker is attached. An input unit that receives a member image, an image processing unit that image-processes the vertical or horizontal member image and inserts a moiré pattern on the screen, corresponding to the vertical displacement or horizontal displacement of the interference fringe generated from the vertical or horizontal member image A first measurement unit for measuring the number of pixels, a second measurement unit for measuring the number of pixels corresponding to the vertical length or horizontal length of the moiré marker on the screen included in the vertical or horizontal member image, the vertical movement displacement of the interference fringe, or A calculator for calculating the horizontal displacement or vertical displacement of the vertical or horizontal member using the number of pixels corresponding to the horizontal displacement and the number of pixels corresponding to the vertical or horizontal length of the moiré marker on the screen, and the calculated vertical or and a determination unit for judging whether the vertical or horizontal member is dangerous by comparing the horizontal displacement or vertical displacement of the horizontal member with a reference value.

The determination unit may determine that there is a risk of collapse of the vertical or horizontal member when the calculated horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value.

When the horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value, an alarm unit for setting a collapse risk detection alarm to sound or transmitting an alarm signal to a preset user terminal may be further included.

The moiré marker may be attached to the vertical or horizontal member in a longitudinal direction.

The moiré pattern may be formed in a pattern inclined at a predetermined angle with respect to a vertical line or a horizontal line.

The calculator may calculate the horizontal displacement or vertical displacement of the vertical or horizontal member through the following equation.

Here, y is the horizontal displacement or vertical displacement value of the vertical or horizontal member, z is the number of pixels corresponding to the vertical or horizontal length of the moire marker on the screen, and x is the vertical displacement or horizontal displacement of the interference fringe. The number of pixels can be displayed.

According to another embodiment of the present invention, in the facility displacement measurement monitoring method using the facility displacement measurement monitoring device, a vertical or horizontal member image captured in real time through a camera spaced a certain distance from a vertical or horizontal member to which a moiré marker is attached receiving the input, image processing the vertical or horizontal member image to insert a moiré pattern on the screen, and determining the number of pixels corresponding to the vertical displacement or horizontal displacement of the interference fringe generated from the vertical or horizontal member image. measuring, measuring the number of pixels corresponding to the vertical or horizontal length of the moiré marker on the screen included in the vertical or horizontal member image, the number of pixels corresponding to the vertical displacement or horizontal displacement of the interference fringe; calculating the horizontal displacement or vertical displacement of the vertical or horizontal member using the number of pixels corresponding to the vertical length or horizontal length of the moiré marker on the screen, and the calculated horizontal displacement or vertical displacement of the vertical or horizontal member; and determining whether the vertical or horizontal member is dangerous by comparing the reference values.

As described above, according to the present invention, horizontal displacement or vertical displacement of a vertical or horizontal member is calculated using a moire marker attached to a vertical or horizontal member and a moire pattern inserted in an image, and the vertical or horizontal member By predicting collapse, it is possible to prevent collapse accidents at the construction site, and to prevent human casualties and economic damage. In addition, it predicts the collapse of vertical or horizontal members in real time and transmits a danger detection alarm, enabling quick evacuation with efficient operation. In particular, according to the present invention, it is applicable to a temporary building, it is possible to prevent an accident by grasping the inclination of the temporary building in advance.

1 is a view for explaining the trend of aging facilities.
2 is a view for explaining a facility displacement measurement and monitoring apparatus using a moiré phenomenon according to an embodiment of the present invention.
3 is a block diagram showing the configuration of a facility displacement measurement and monitoring device using a moiré phenomenon according to an embodiment of the present invention.
4A is a diagram for explaining a moiré phenomenon.
4B is a diagram for explaining a moiré pattern.
4C is a diagram for explaining the principle of the moiré phenomenon.
5A is an exemplary view for explaining a vertical member to which a moiré marker is attached.
5B is an exemplary diagram for explaining an image-processed moiré pattern.
5C is an exemplary view for explaining the vertical movement displacement of the moiré interference fringe according to the horizontal displacement of the vertical member.
5D is a view for explaining the vertical movement displacement of the moiré interference fringe according to the horizontal displacement of the vertical member.
5E is a diagram illustrating a linear inclination according to a distance between a camera and a vertical member.
5f is a view showing the vertical length of the moiré marker according to the distance between the camera and the vertical member.
6 is a flowchart illustrating a facility displacement measurement method using the facility displacement measurement and monitoring apparatus according to an embodiment of the present invention.
FIG. 7 is an exemplary diagram for explaining step S610 of FIG. 6 .
FIG. 8 is an exemplary diagram for explaining step S620 of FIG. 6 .
FIG. 9 is an exemplary view for explaining step S630 of FIG. 6 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Then, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

Hereinafter, the facility displacement measurement and monitoring apparatus 100 using the moiré phenomenon according to an embodiment of the present invention will be described with reference to FIG. 2 .

2 is a view for explaining a facility displacement measurement and monitoring apparatus using a moiré phenomenon according to an embodiment of the present invention.

As shown in FIG. 2 , the facility displacement measurement and monitoring apparatus 100 according to an embodiment of the present invention is connected to the camera 200 and the user terminal 300 through a network.

First, the facility displacement measurement monitoring apparatus 100 is implemented as a device capable of predicting the collapse risk of a vertical member through a change in the horizontal displacement of the vertical member based on the moiré phenomenon at a construction site.

That is, the facility displacement measurement and monitoring apparatus 100 may receive the vertical member image photographed from the camera 200 and transmit an alarm signal for notifying the detection of the risk of collapse to the user terminal 300 .

Next, the camera 200 is installed in the construction site, and transmits to the facility displacement measurement monitoring apparatus 100 by photographing vertical members such as formwork, temporary structures, and temporary equipment in real time.

In addition, the user terminal 300 may receive an alarm signal for detecting the risk of collapse from the facility displacement measurement and monitoring apparatus 100 .

In this case, the user terminal 300 is a portable user terminal, and may be implemented as a device capable of exchanging information by connecting to a network by wire or wirelessly, such as a notebook computer, a smart pad, or a smart phone.

Hereinafter, the configuration of the facility displacement measurement and monitoring apparatus 100 according to an embodiment of the present invention will be described with reference to FIG. 2 .

3 is a block diagram showing the configuration of a facility displacement measurement and monitoring device using a moiré phenomenon according to an embodiment of the present invention.

As shown in FIG. 3 , the facility displacement measurement and monitoring apparatus 100 according to an embodiment of the present invention includes an input unit 110 , an image processing unit 120 , a first measurement unit 130 , a second measurement unit 140 , It includes an operation unit 150 , a determination unit 160 , and an alarm unit 170 .

First, the input unit 110 receives a vertical member image captured in real time through a camera spaced apart from a vertical member to which a moiré marker is attached.

In this case, the moiré marker is a marker for inducing the moiré phenomenon, and is attached to the vertical member in the longitudinal direction.

Next, the image processing unit 120 image-processes the vertical member image and inserts a moiré pattern on the screen.

At this time, the moiré pattern is inserted on the vertical member screen in the form of a pattern inclined at a predetermined angle with respect to the vertical line.

Next, the first measurement unit 130 measures the number of pixels corresponding to the vertical movement displacement of the interference fringe generated from the vertical member image.

At this time, the first measurement unit 130 measures the number of pixels corresponding to the vertical movement displacement of the interference fringe, which appears by interfering with each other due to the moiré phenomenon while overlapping the moire marker attached to the vertical member and the moire pattern inserted through image processing. do.

Next, the second measurement unit 140 measures the number of pixels corresponding to the vertical length of the moiré marker on the screen included in the vertical member image.

In this case, the number of pixels corresponding to the vertical length of the moiré marker decreases as the distance between the vertical member and the camera increases.

Next, the calculator 150 calculates the horizontal displacement of the vertical member using the number of pixels corresponding to the vertical displacement of the interference fringe and the number of pixels corresponding to the vertical length of the moire marker on the screen.

Next, the determination unit 160 compares the calculated horizontal displacement of the vertical member with a reference value to determine whether the vertical member is dangerous.

In this case, when the calculated horizontal displacement of the vertical member is greater than the reference value, the determination unit 160 may determine that the vertical member has a risk of collapse.

Next, if the risk of the vertical member is greater than the reference value, the alarm unit 170 sets the collapse risk detection alarm to sound.

In this case, the alarm unit 170 may transmit an alarm signal to the user terminal 300 to notify the user of the risk of collapse through the user terminal 300 .

Hereinafter, the moiré phenomenon will be described with reference to FIGS. 4A to 4C .

4A is a diagram for explaining a moiré phenomenon, FIG. 4B is a diagram for explaining a moiré pattern, and FIG. 4C is a diagram for explaining a principle of the moiré phenomenon.

As shown in Fig. 4a, the moiré phenomenon refers to an interference phenomenon of light having a wave property, and is based on the same principle as the beat phenomenon that appears when a wave with a minute difference between a frequency wave and a wave with a fine frequency interferes. Occurs.

As shown in FIG. 4B , the moiré pattern refers to a pattern in which patterns having regular intervals are repeatedly overlapped and interfered with each other.

As shown in Fig. 4c, (a) the grid is a linear grid with a period p, and (b) the grid has the same period as the grid (a) and is rotated counterclockwise by θ. And, when (a) lattice and (b) lattice are overlapped, the same moiré pattern as (c) lattice is obtained, and (d) lattice is moved horizontally by p/2 in (c) lattice. .

Therefore, the (c) lattice with period P in the moiré pattern has a slightly amplified size value than the (a) lattice with the period p of the linear lattice.

That is, according to an embodiment of the present invention, as shown in FIGS. 4A to 4C , the facility displacement measurement and monitoring apparatus 100 uses a period amplified based on a moiré phenomenon generated by overlapping grids to vertically shift the interference fringes. measure

Hereinafter, an experimental procedure for monitoring the displacement measurement of a facility will be described with reference to FIGS. 5A to 5F .

5A is an exemplary view for explaining a vertical member to which a moiré marker is attached.

As shown in Figure 5a, the vertical member can use an object implemented with an outer diameter of 60 mm and a length of 2 m, which is a size similar to the actual site, and a moiré marker has a width of 15 mm, an interval of 15 mm, and a grid of 500 mm in length. However, the width, spacing, and vertical length may vary.

In addition, according to this experiment, the distance between the camera and the vertical member was moved at 1m intervals from 2m to 8m, and the horizontal displacement of the vertical member was moved in 1mm increments from 1mm to 10mm and 2mm increments from 12mm to 20mm, for a total of 15 Each dog's displacement is photographed 7 times.

5B is an exemplary diagram for explaining an image-processed moiré pattern.

As shown in FIG. 5B , a moiré pattern is inserted through image processing in the image taken for each displacement, and the image into which the moiré pattern is inserted interferes with a moire marker attached to a vertical member, so that an interference fringe appears. At this time, the smaller the lattice slope, the larger the amplification appears. Here, the moiré pattern applies an appropriate slope of an observable level, and a grid pattern inclined at 8° is used, but the slope may be changed depending on the design.

5C is an exemplary view for explaining the vertical displacement of the moiré interference fringe according to the horizontal displacement of the vertical member, and FIG. 5D is a diagram for explaining the vertical displacement of the moire interference fringe according to the horizontal displacement of the vertical member.

As shown in FIG. 5C , the moiré interference fringes appearing in the image moved vertically as the vertical member moved horizontally.

Accordingly, the facility displacement measurement and monitoring apparatus 100 measures the number of pixels corresponding to the vertical displacement of the moved interference fringe.

And, as shown in FIG. 5D , as the horizontal displacement of the vertical member increases, the number of pixels corresponding to the vertical displacement of the interference fringe increases.

Also, it can be seen from the graph that the number of pixels corresponding to the horizontal displacement of the vertical member and the vertical displacement of the interference fringe varies as the distance between the camera and the vertical member changes.

That is, it can be seen that the number of pixels corresponding to the horizontal displacement of the vertical member, the vertical displacement of the interference fringe, and the slope of the linear line on the graph vary according to the change in the distance between the camera and the vertical member.

Accordingly, the relational expression of the number of pixels corresponding to the vertical displacement of the interference fringe according to the horizontal displacement of the vertical member can be obtained through FIG. 5D, and is expressed by Equation 1 below.

Here, y is the horizontal displacement (mm) of the vertical member, A is the linear slope shown in the graph of FIG. 4D, and x is the number of pixels corresponding to the vertical displacement of the interference fringe.

In addition, the relationship between the linear slope (A) and the distance between the camera and the vertical member from the graph of FIG. 4D may be expressed by the following Equation 2 as an analysis result.

Here, S represents the distance (m) between the camera and the vertical member.

FIG. 5E is a diagram illustrating a linear inclination (A) according to a distance (S) between a camera and a vertical member.

As shown in FIG. 5E , it can be seen that the linear inclination A increases as the distance S between the camera and the vertical member increases.

That is, through this analysis result, the relational expression of the linear inclination (A) according to the distance (S) between the camera and the vertical member is derived as in Equation 2 above.

In addition, the distance (S) between the camera and the vertical member for calculating the linear slope (A) can be calculated using the vertical length of the moiré marker attached to the vertical member. Hereinafter, the camera and the A relational expression of the number of pixels corresponding to the vertical length of the moiré marker according to the distance between the vertical members will be described.

5f is a view showing the vertical length of the moiré marker according to the distance between the camera and the vertical member.

As shown in FIG. 5F , as the number of pixels corresponding to the vertical length of the moiré marker included in the image obtained by photographing the vertical member through the camera increases, the distance S between the camera and the vertical member decreases.

Accordingly, the relational expression for the distance S between the camera and the vertical member may be expressed by the following Equation 3 through FIG. 5F.

Here, z represents the number of pixels corresponding to the vertical length of the moire marker on the screen.

That is, the distance (S) between the camera and the vertical member can be calculated through the number of pixels (z) corresponding to the vertical length of the moiré marker on the screen, and if the distance (S) between the camera and the vertical member is known, Equation 2 The slope of the linear straight line (A) can be calculated through .

Then, the horizontal displacement (y) of the vertical member may be calculated based on the linear slope (A) and the number of pixels (x) corresponding to the vertical displacement of the interference fringe.

Hereinafter, a facility displacement measurement monitoring method using the facility displacement measurement monitoring apparatus according to an embodiment of the present invention will be described with reference to FIGS. 6 to 9 .

6 is a flowchart illustrating a facility displacement measurement method using the facility displacement measurement monitoring apparatus according to an embodiment of the present invention.

First, the input unit 110 receives an image of a vertical member photographed through a camera spaced apart from a vertical member to which a moiré marker is attached (S610).

7 is an exemplary diagram for explaining step S610 of FIG. 6 .

As shown in FIG. 7 , the moiré marker is attached to the vertical member in the longitudinal direction, and the input unit 110 receives an image of the vertical member photographed in real time through a camera in real time.

Next, the image processing unit 120 inserts a moiré pattern into the vertical member image (S620).

FIG. 8 is an exemplary diagram for explaining step S620 of FIG. 6 .

As shown in FIG. 8 , the image processing unit 120 inserts a moiré pattern inclined at a predetermined angle with respect to a vertical line with respect to the input vertical member image so that an interference fringe appears.

For example, the image processing unit 120 may insert a moiré pattern inclined by about 8°.

Next, the first measurement unit 130 measures the number of pixels (x) corresponding to the vertical movement displacement of the interference fringe generated from the vertical member image (S530).

FIG. 9 is an exemplary diagram for explaining step S630 of FIG. 6 .

As shown in FIG. 9 , if the vertical member is moved horizontally, the interference fringe generated in the vertical member image is moved vertically, and the first measurement unit 130 determines the number of pixels corresponding to the vertical displacement of the interference fringe. Measure (x).

Next, the second measurement unit 140 measures the number of pixels (z) corresponding to the vertical length of the moiré marker on the screen included in the vertical member image (S540).

In this case, as the distance S between the camera and the vertical member increases, the number of pixels z corresponding to the vertical length of the moiré marker on the screen is measured as a small value.

Next, the calculator 150 calculates the horizontal displacement of the vertical member using the number of pixels (x) corresponding to the vertical displacement of the interference fringe and the number of pixels (z) corresponding to the vertical length of the moiré marker on the screen ( S550).

In this case, the horizontal displacement y of the vertical member may be calculated through Equation 4 below derived using Equations 1 to 3.

For example, it is assumed that the number of pixels corresponding to the vertical displacement of the interference fringe measured in step S530 of FIG. 5 is 200, and corresponding to the vertical length of the moiré marker on the screen measured in step S540 of FIG. 5 . Assuming that the number of pixels is 400, it can be calculated that the horizontal displacement of the vertical member is moved by 35.97 mm by Equation (4).

Next, the determination unit 160 compares the calculated horizontal displacement y of the vertical member with a reference value to determine whether the vertical member is dangerous (S560).

In this case, the reference value may be set to 10 mm, but is not limited thereto.

For example, when the calculated horizontal displacement (y) of the vertical member is 35.97mm, which is greater than the reference value of 10mm, the determination unit 160 determines that the vertical member has a risk of collapse.

Next, the alarm unit 170 sets the collapse risk detection alarm to sound or transmits an alarm signal to a preset user terminal (S570).

If it is determined that there is no collapse risk in step S560 of FIG. 5 , the alarm unit 170 does not operate the collapse risk detection alarm, and monitors the potential collapse risk in real time through step S510 again.

As described above, according to an embodiment of the present invention, the horizontal displacement of the vertical member can be measured along the longitudinal direction of the moire marker attached to the vertical member, and in the same way, according to the horizontal direction of the moire marker attached to the vertical member The vertical displacement of the vertical member can be measured. Since the method of measuring the vertical displacement of the vertical member is substantially the same as the steps S510 to S570 described with reference to FIGS. 5 to 8 , those skilled in the art can easily carry out the method, and the overlapping description will be omitted.

Meanwhile, although the embodiment according to the present invention has been described as using a vertical member, a horizontal member may be used instead of a vertical member.

That is, according to another embodiment of the present invention, the facility displacement measurement and monitoring apparatus 100 receives a horizontal member image captured in real time through a camera spaced a certain distance from a horizontal member to which a moiré marker is attached, and displays the horizontal member image. The number of pixels corresponding to the horizontal movement displacement of the interference fringe generated from the horizontal member image is measured by image processing and inserting the moiré pattern on the screen. In addition, the facility displacement measurement monitoring apparatus 100 measures the number of pixels corresponding to the horizontal length of the moire marker on the screen included in the horizontal member image, and the number of pixels corresponding to the horizontal movement displacement of the interference fringe and the moire marker on the screen. The vertical displacement of the horizontal member is calculated using the number of pixels corresponding to the horizontal length. Then, the facility displacement measurement monitoring apparatus 100 compares the calculated vertical displacement of the horizontal member with a reference value to determine whether the horizontal member is dangerous.

As described above, according to an embodiment of the present invention, horizontal displacement or vertical displacement of a vertical or horizontal member is calculated using a moire marker attached to a vertical or horizontal member and a moiré pattern inserted in an image, and the vertical or vertical displacement is obtained through the calculated value. By predicting the collapse of the horizontal member, it is possible to prevent a collapse accident at the construction site, and to prevent personal injury and economic damage. In addition, it predicts the collapse of vertical or horizontal members in real time and transmits a danger detection alarm, enabling quick evacuation with efficient operation. In particular, according to the present invention, it is applicable to a temporary building, it is possible to prevent an accident by grasping the inclination of the temporary building in advance.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

100: facility displacement measurement monitoring device, 110: input unit,
120: an image processing unit, 130: a first measurement unit,
140: second measuring unit, 150: calculating unit,
160: judgment unit, 200: camera,
300: user terminal

Claims (12)

In the facility displacement measurement and monitoring device using the moiré phenomenon,
An input unit that receives an image of a vertical or horizontal member captured in real time through a camera spaced a certain distance from a vertical or horizontal member to which a moiré marker is attached;
An image processing unit for image processing the vertical or horizontal member image to insert a moiré pattern on the screen;
a first measurement unit for measuring the number of pixels corresponding to vertical displacement or horizontal displacement of the interference fringe generated from the vertical or horizontal member image;
a second measuring unit for measuring the number of pixels corresponding to the vertical or horizontal length of the moiré marker on the screen included in the vertical or horizontal member image;
Calculating the horizontal displacement or vertical displacement of the vertical or horizontal member using the number of pixels corresponding to the vertical displacement or horizontal displacement of the interference fringe and the number of pixels corresponding to the vertical or horizontal length of the moire marker on the screen operator, and
Facility displacement measurement and monitoring device comprising a determination unit for determining whether the vertical or horizontal member is dangerous by comparing the calculated horizontal displacement or vertical displacement of the horizontal member with a reference value. According to claim 1,
The judging unit,
When the calculated horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value, the facility displacement measurement and monitoring device for determining that the vertical or horizontal member has a risk of collapse. 3. The method of claim 2,
When the horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value, the facility displacement measurement monitoring device further comprising an alarm unit for setting a collapse risk detection alarm to sound or transmitting an alarm signal to a preset user terminal. According to claim 1,
The moiré marker,
A facility displacement measurement and monitoring device attached to the vertical or horizontal member in the longitudinal direction. According to claim 1,
The moiré pattern is
A facility displacement measurement and monitoring device that is formed in the form of a pattern inclined at a certain angle with respect to a vertical or horizontal line. According to claim 1,
The calculation unit,
Facility displacement measurement monitoring device for calculating the horizontal displacement or vertical displacement of the vertical or horizontal member through the following equation:

Here, y is the horizontal displacement or vertical displacement value of the vertical or horizontal member, z is the number of pixels corresponding to the vertical or horizontal length of the moire marker on the screen, and x is the vertical displacement or horizontal displacement of the interference fringe. Indicates the number of pixels. In the facility displacement measurement monitoring method using the facility displacement measurement monitoring device,
A step of receiving a vertical or horizontal member image captured in real time through a camera spaced a certain distance from the vertical or horizontal member to which the moiré marker is attached;
inserting a moiré pattern on the screen by image processing the vertical or horizontal member image;
measuring the number of pixels corresponding to vertical displacement or horizontal displacement of the interference fringe generated from the vertical or horizontal member image;
measuring the number of pixels corresponding to the vertical or horizontal length of the moiré marker on the screen included in the vertical or horizontal member image;
Calculating the horizontal displacement or vertical displacement of the vertical or horizontal member using the number of pixels corresponding to the vertical displacement or horizontal displacement of the interference fringe and the number of pixels corresponding to the vertical or horizontal length of the moire marker on the screen step, and
A facility displacement measurement and monitoring method comprising the step of determining whether the vertical or horizontal member is dangerous by comparing the calculated horizontal displacement or vertical displacement of the horizontal member with a reference value. 8. The method of claim 7,
The step of determining whether the vertical or horizontal member collapses,
When the calculated horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value, the facility displacement measurement and monitoring method for determining that the vertical or horizontal member has a risk of collapse. 9. The method of claim 8,
When the horizontal displacement or vertical displacement of the vertical or horizontal member is greater than a reference value, the facility displacement measurement monitoring method further comprising setting a collapse risk detection alarm to sound or transmitting an alarm signal to a preset user terminal. 8. The method of claim 7,
The moiré marker,
A facility displacement measurement and monitoring method attached to the vertical or horizontal member in the longitudinal direction. 8. The method of claim 7,
The moiré pattern is
A facility displacement measurement and monitoring method that is formed in the form of a pattern inclined at a certain angle with respect to a vertical or horizontal line. 8. The method of claim 7,
Calculating the horizontal displacement or vertical displacement of the vertical or horizontal member comprises:
A facility displacement measurement monitoring method for calculating the horizontal displacement or vertical displacement of the vertical or horizontal member through the following equation:

Here, y is the horizontal displacement or vertical displacement value of the vertical or horizontal member, z is the number of pixels corresponding to the vertical or horizontal length of the moire marker on the screen, and x is the vertical displacement or horizontal displacement of the interference fringe. Indicates the number of pixels.

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