WO2017010763A1

WO2017010763A1 - Collapse warning system using structure deformation monitoring and method therefor

Info

Publication number: WO2017010763A1
Application number: PCT/KR2016/007499
Authority: WO
Inventors: 신경재
Original assignee: 경북대학교산학협력단
Priority date: 2015-07-10
Filing date: 2016-07-11
Publication date: 2017-01-19
Also published as: KR101696629B1

Abstract

The present invention relates to a collapse warning system using structure deformation monitoring and a method therefor, which compares an initial photographed image and a current photographed image of a structure, and provides collapse warning information for the corresponding structure when the deformed state of the structure is equal to or greater than a predetermined reference value, so as to provide a collapse warning for the structure at an appropriate timing. The collapse warning system using structure deformation monitoring and the method therefor according to the present invention comprise: a photographing terminal which is installed near a structure so as to photograph an area of interest of the corresponding structure; a manager terminal for outputting received collapse warning information; and a service providing device for comparing a previous photographed image and a current photographed image of the corresponding structure, provided by the photographing terminal, calculating a horizontal velocity variation and a vertical velocity variation for the area of interest, respectively, and providing structure collapse warning information to the manager terminal when the difference between the horizontal velocity variation and the vertical velocity variation is equal to or greater than a reference level.

Description

Collapse warning system and its method using structure deformation monitoring

The present invention compares the initial photographing image and the current photographing image of the structure to provide the collapse warning information for the structure when the deformation state of the structure is more than a predetermined reference value, thereby providing a collapse warning for the structure at an appropriate timing The present invention relates to a collapse warning system and method using structural deformation monitoring.

In general, the construction of large buildings such as buildings, such as the construction of pillars, beams, slabs, etc. to form the skeleton of the building, and after the completion of the above-mentioned frame construction, the tiles, stone, curtain wall, etc. It consists of exterior finishing work that beautifully decorates the interior or outdoor surface of the building by constructing finishing materials.

In the case of high-rise buildings, construction works such as scaffolding and safety railings are installed outside the building to move the temporary material to the upper floor by tower crane.

That is, the temporary material is temporarily installed for the construction or movement of the construction company during construction.

However, when the construction of the construction material is deformed or collapsed when performing the construction, it is directly connected to human life, and it is necessary to prevent accidents due to the deformation or collapse of the temporary material through continuous safety diagnosis.

In addition, even in completed structures, such as bridges and structures, when the collapse of the structure has a significant impact on social and economic as well as human life, it is necessary to prevent accidents due to falling behind through continuous safety diagnosis.

Various structures including such temporary materials are mostly subjected to irregular loads and shocks, and in Korea, the daily crossover is very large, and sudden stimuli such as cold waves and typhoons are given. As described above, the structure causes long-term deformation such as deflection or torsion by changing the mechanical properties of the material constituting the structure as well as external shocks and stimuli.

Measurement of the displacement of the structure is most appropriate as an index for evaluating the overall performance change of the structure. Therefore, displacement is now used as a reliable measurement value even in load test for safety diagnosis of structure.

A widely used method for measuring displacement of a structure is a method using a laser measuring instrument. Laser-based measuring instruments are commonly used to measure displacements or vibrations in large structures or special bridges, where mechanical scanners move a laser source to measure scattered multipoints. However, this method has the advantage of ease of use of the device, but the product is expensive and complicated procedures.

In addition, recently, a method of continuously photographing specific coordinates of a structure using a camera and extracting a displacement value from a plurality of photographed images has been proposed. That is, the deformation of the structure may be determined based on the change in the displacement value of the photographed image photographed by the camera.

However, in order to determine the state of the structure through the various methods described above and to use it for the structure management, it is necessary to provide the manager with information related to the deformation of the structure at an appropriate timing. That is, in providing deformation occurrence information of a structure to a manager, providing structure deformation occurrence information to a manager after a dangerous state may be meaningless in preliminary structure management.

Accordingly, the present invention was created in view of the above circumstances, and when the difference between the horizontal speed change and the vertical speed change amount of the structure is greater than or equal to the preset reference value by comparing the previous image and the current image of the structure, The present invention relates to a collapse warning system and method using structural deformation monitoring, which provides the collapse warning information at an appropriate timing, thereby enabling the manager to perform more efficient structure management.

According to an aspect of the present invention for achieving the above object, a photographing terminal installed around the structure and photographing the region of interest of the structure, an administrator terminal for outputting the received collapse warning information, and provided from the photographing terminal Comparing the previous and current shots of the structure, calculate the horizontal speed change and the vertical speed change for the ROI, and if the difference between the horizontal speed change and the vertical speed change is greater than the reference level, Provided is a collapse warning system using structural deformation monitoring, comprising a service providing device for providing collapse warning information to a manager terminal.

The service providing apparatus may be configured to calculate a current risk based on a ratio of a horizontal speed change to a vertical speed change, and determine whether the current risk is greater than or equal to a preset reference risk. A collapse warning system is provided.

In addition, there is provided a collapse warning system using structural deformation monitoring, characterized in that the reference risk is set to a value in the range of "4-6" or "1 / 6-1 / 4".

When the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing device is based on a shooting period corresponding to a danger range corresponding to a current risk level among a preset multi-stage risk range. Provided is a collapse warning system using structural deformation monitoring, characterized in that to change the shooting cycle of the.

In addition, when the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing apparatus photographs the image based on the image analysis period corresponding to the risk range including the current risk level among the preset multi-stage risk ranges. A collapse warning system using structure deformation monitoring is provided that is configured to perform a risk calculation process for an image.

In addition, a vibration sensor for detecting a vibration state is additionally installed on the structure, and the service providing apparatus changes and sets a reference level for determining a risk according to the vibration state of the structure provided from the vibration sensor. There is provided a collapse warning system using structural deformation monitoring, wherein the reference level value is set smaller as the vibration level is higher.

The service providing apparatus calculates a horizontal displacement and a vertical displacement for the ROI, and calculates a horizontal speed change and a vertical speed change based on the horizontal displacement and the vertical displacement for a predetermined time. When the displacement amount of at least one of the horizontal displacement amount or the vertical displacement amount is equal to or more than a preset reference displacement amount, a collapse warning system using structure deformation monitoring is provided so as to provide collapse warning information to a corresponding manager terminal.

In addition, according to another aspect of the present invention for achieving the above object, the first step of photographing the region of interest of the structure in the photographing terminal to provide to the service providing apparatus, and provided from the photographing terminal in the service providing apparatus In the second step of determining whether there is a change by comparing a current shot image with a previously stored shot image, when a change occurs as a result of the comparison between the current shot image and the previous shot image in the service providing apparatus, the horizontal displacement amount and the vertical direction of the region of interest are vertical. A third step of calculating a direction displacement amount respectively; a fourth step of calculating a horizontal speed change amount and a vertical speed change amount according to a time change amount based on the horizontal displacement amount and a vertical displacement amount in the service providing device; Determine whether the difference between the horizontal speed change and the vertical speed change is more than the reference level. A fifth step and a sixth step of providing structural collapse warning information to the manager terminal when the difference between the horizontal speed change amount and the vertical speed change amount is greater than a reference level in the service providing apparatus. A collapse warning method using strain monitoring is provided.

Further, in the fifth step, the service providing apparatus calculates a current risk based on a ratio of a horizontal speed change amount and a vertical speed change amount, and determines whether the current risk level is greater than or equal to a preset reference risk level. A collapse warning method using monitoring is provided.

Further, the reference risk level is provided with a collapse warning method using structural deformation monitoring, characterized in that the value is set in the range of "4 ~ 6" or "1/6 ~ 1/4".

In addition, in the fifth step, the service providing apparatus, when the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, selects a shooting period corresponding to a risk range corresponding to a current risk level among a preset multi-stage risk range. If it is determined that the photographing period is different from the searched photographing period and the current photographing period, the photographing period change setting information is provided to the photographing terminal, and the photographing terminal provides a photographing period change setting report provided from the service providing device. The collapse warning method using the structure deformation monitoring, characterized in that for automatically changing and setting the shooting setting period based on the.

In addition, in the fifth step, the service providing apparatus, when the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, selects a shooting period corresponding to a risk range corresponding to a current risk level among a preset multi-stage risk range. If it is determined that the photographing period is different by comparing the searched photographing period and the current photographing period, the corresponding photographing period change setting information is provided to the manager terminal, and the manager terminal receives a photographing period change setting report provided from a service providing device. The collapse warning method using the structure deformation monitoring, characterized in that the output to request the manager to change the shooting cycle of the photographing terminal is provided.

Further, in the fifth step, the service providing apparatus searches for an image analysis period corresponding to a risk range corresponding to a current risk among multiple risk ranges when the difference between the horizontal speed change and the vertical speed change is less than a reference level. Based on this, there is provided a collapse warning method using structural deformation monitoring, which calculates a horizontal displacement amount and a vertical displacement amount for the captured image.

In addition, the first step is to provide a vibration state of the structure to the service providing device additionally in the vibration sensor installed on the structure, the service providing device provides a reference level for determining the risk level according to the vibration state provided from the vibration sensor The change setting is set, but the collapse warning method using the structure deformation monitoring, characterized in that the reference level value is set so that the higher the vibration level of the structure is provided.

Further, in the third step, the service providing apparatus checks whether the horizontal displacement amount or the vertical displacement amount is greater than or equal to a preset reference displacement amount, and collapses when the displacement amount of the at least one of the horizontal displacement amount or the vertical displacement amount is greater than the reference displacement amount. A collapse warning method using structure deformation monitoring, which provides information to a corresponding manager terminal, is provided.

According to the present invention, by analyzing the photographed image of the structure for various structures including temporary materials and completed buildings, the collapse warning at the appropriate timing by providing the collapse warning information to the manager terminal in the deformation state corresponding to the point of collapse risk By providing information, managers can perform more efficient structure management.

In addition, according to the present invention, by changing the shooting cycle or the image analysis period according to the deformation state of the structure, it becomes possible to operate a more efficient system for warning of the collapse risk.

In particular, in the case of buckling collapse, it is difficult to predict using absolute displacement, but using an engineering principle in which the rate of change of velocity according to the present invention is not proportional to the X and Y directions can facilitate the prediction of collapse.

1 is a diagram showing a schematic configuration of a collapse warning system using structure deformation monitoring according to a first embodiment of the present invention.

Figure 2 illustrates a structure (1) formed with a marker (2) applied to the present invention.

3 is a view showing functionally separated internal structure of the service providing apparatus 100 shown in FIG.

Figure 4 illustrates a structure deformation state according to the design shape of the structure.

FIG. 5 is a model drawing for a collapse test of a structure, and shows a relationship between a vertical displacement amount Dy and a horizontal displacement amount Dx measured during an experiment. FIG.

6 is a flow chart for explaining the operation of the collapse warning system using the structure deformation monitoring shown in FIG.

Description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as limited by the embodiments described in the text. That is, since the embodiments may be variously modified and may have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, the objects or effects presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereby.

Hereinafter, a collapse warning system using structure deformation monitoring according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a diagram illustrating a schematic configuration of a collapse warning system using structure deformation monitoring according to a first embodiment of the present invention.

As illustrated in FIG. 1, in the collapse warning system using structure deformation monitoring according to the present invention, the service providing device 100 is coupled to the photographing terminal 200 and the manager terminal 300 through a communication network.

The photographing terminal 200 photographs a structure to be monitored to provide a photographed image to the service providing apparatus 100. The photographing terminal 200 includes a camera 210 for photographing a region of interest of the structure and a communication unit 220 for transmitting a photographed image provided from the camera 210 to the service providing apparatus 100. In this case, the communication unit 220 may be configured to perform a wireless communication interface for converting the photographed image into a wireless signal to transmit to the service providing apparatus 100.

In addition, the photographing terminal 200 is configured to provide a photographed image of at least one or more positions of the structure to be monitored 1, as shown in FIG. 2. That is, each camera 210 is one communication unit 220 while a plurality of photographing terminals 200 are installed for one structure 1 or a plurality of cameras 210 are respectively installed at a plurality of positions of the structure 1. It is also possible to be configured in the form that is combined with).

In addition, as shown in FIG. 2, various shapes, for example, quadrangular markers 2 may be formed in the region of interest of the structure 1. In this case, the marker 2 may be formed at a position where collapse is expected when the structure 1 is deformed, for example, a central axis of a top plate or a form pillar, that is, a portion of a copper bar. That is, the camera 210 of the photographing terminal 200 is installed at a suitable position capable of photographing the marker 2 formed in the structure 1.

In addition, the photographing terminal 200 may be configured to perform a photographing operation based on a photographing period set by an administrator or a photographing period automatically set by the service providing apparatus 100. In this case, although not shown, the photographing terminal 200 may perform bidirectional communication with the service providing apparatus 100, and may be provided with control means for performing a photographing operation according to a photographing period.

The manager terminal 300 is a terminal of a manager or a company managing the monitoring target structure 1, and may be a wireless terminal or a wired terminal. At this time, the manager terminal 300 is installed with an application for receiving the structure collapse warning service according to the present invention is a text display or voice display of the structure collapse warning information provided from the service providing apparatus 100 in accordance with the execution of this application Is configured to output.

When the service providing apparatus 100 determines that a change has occurred by comparing the initial photographed image provided from the photographing terminal 200 with the current photographed image, the service providing apparatus 100 calculates a horizontal displacement amount and a vertical displacement amount for the ROI. Based on this, the horizontal speed change amount and the vertical speed change amount are calculated for a predetermined time, and if the difference between the horizontal speed change amount and the vertical speed change amount is more than the reference level, the manager terminal 300 which has previously registered structural collapse warning information (300). Is configured to provide

FIG. 3 is a block diagram showing functional separation of the internal configuration of the service providing apparatus 100 shown in FIG.

As shown in FIG. 3, the apparatus 100 for providing a service includes a communication processor 110, an image analyzer 120, an alert processor 130, and an information storage 140.

The communication processor 110 performs a communication process with the photographing terminal 200 and the manager terminal 300. That is, the communication processing unit 110 provides the captured image received from the photographing terminal 200 to the image analyzing unit 120, and provides the collapse warning information provided from the warning processing unit 130 to the manager terminal 300. To provide.

The image analyzer 120 compares a current photographed image received from the photographing terminal 200 with a previous photographed image to determine whether there is a change, and when a change between images is confirmed, the image region 120 includes a region of interest, that is, the marker 2. Calculate the horizontal displacement and the vertical displacement relative to each other. In this case, the previous photographed image may be the first photographed image initially photographed or may be a previous photographed image based on a preset time period.

For example, FIG. 4 illustrates the left and right deformation state A and the up and down deformation state B according to the design shape of the structure 1, where the dashed-dotted line is the initial state of the structure and the solid line is the current state of the structure. Indicates. In this case, the marker 2 for determining the deformation state of the structure 1 may be attached to, for example, the club 3 of the structure 1. The image analyzer 120 calculates a horizontal displacement and a vertical displacement for the same time based on the pixel coordinate values of the marker 2 in the captured image including the marker 2. That is, the image analysis unit 120 has a horizontal displacement amount Dx, which is a difference in X coordinates, and a vertical displacement amount, which is a difference in Y coordinates, with respect to the center position of the markers 2, 2 'in the initial image and the current image. (Dy) is respectively calculated.

The warning processing unit 130 is a horizontal speed and a vertical speed for a predetermined time based on the horizontal displacement amount Dx and the vertical displacement amount Dy with respect to the mark 2 provided from the image analyzer 120. And calculate the current speed corresponding to the difference by calculating the horizontal speed change and the vertical speed change for a predetermined time with respect to the horizontal speed and the vertical speed. In addition, the warning processor 130 compares the calculated current risk with a reference risk, and provides the collapse warning information to the manager terminal 300 through the communication processor 110 when the currently calculated risk is greater than or equal to the reference risk. In this case, the collapse alert information may include a warning message and the collapse warning image position.

Equation 1 shows a risk calculation process.

Where

Is the displacement in the X direction at time i,

Is the displacement in Y direction at time i,

Is the velocity in the X direction at time i,

Is the velocity in the Y direction at time i,

Is the acceleration in the X direction at time i,

Is the acceleration in the Y direction at time i,

Is the ratio of the accelerations in the X and Y directions at time i.

That is, the risk is the ratio of the acceleration in the X, Y direction as shown in Equation 1 above (

Is calculated as In this case, the risk of Equation 1 is calculated as the horizontal speed change amount with respect to the vertical speed change amount, but may be calculated as the vertical speed change amount with respect to the horizontal speed change amount.

In addition, the reference risk, which is a criterion for providing collapse warning information, may be set to a value in the range of "4 to 6" or "1/6 to 1/4". That is, the warning processing unit 130 provides the collapse warning information to the manager terminal 300 when the difference between the vertical speed change amount and the horizontal speed change amount is "4 times to 6 times" or more. As shown in FIG. 5, the horizontal reference risk is “4 to 6” based on an experimental result in which the deformation of the structure is rapidly performed after the difference between the vertical speed change and the horizontal speed change tends to be higher than a certain ratio. Or "1/6 to 1/4".

In FIG. 5, (A) is a schematic view of an experimental model, in which collapse experiments are performed by applying an arbitrary force (F) at the top. (B) and (C) in FIG. 5 are experimental results for (A), (B) shows the vertical and horizontal displacements of the test specimen when the collapse time is 60 seconds, and (C) the horizontal displacement amount immediately before collapse. The enlarged view shows an area larger than the vertical displacement by a certain ratio.

In addition, when the currently calculated risk is less than the reference level, the warning processor 130 may set an image capturing period of the photographing terminal 200 based on the current risk. That is, the warning processing unit 130 compares the multi-stage risk range stored in the information storage unit 140 to which the current risk level belongs, and searches for the image capturing period corresponding to the corresponding risk range afterwards. It may be configured to provide to the photographing terminal 200 through the communication processing unit 110.

In addition, the warning processing unit 130 may be configured to change the subsequent image analysis period based on the current risk. That is, the warning processing unit 130 compares the risk range of the multi-stage stored in the information storage unit 140 to which the current risk degree belongs, and then searches for an image analysis period corresponding to the corresponding risk range after the image analysis period. The image analysis unit 120 may be provided to change the image analysis period.

In addition, the warning processing unit 130 may be configured to include information output means (not shown), and may be configured to display or output audio warning information and image analysis result information.

The information storage unit 140 stores various information related to the collapse warning. For example, the information storage unit 140 may include an initial photographing image for each identification information of the photographing terminal 200 installed in the structure 1, photographing terminal information including an initial photographing date, a photographing period, a current risk, and a photographing date; Information related to the collapse warning including the shooting cycle or image analysis period information by each risk range and the collapse warning message is stored. Here, the shooting cycle or the image analysis cycle for each risk range is the initial stage with the lowest risk, the shooting cycle or the image analysis cycle is set to the longest, for example, "30 days", the late stage when the risk range is close to the reference level The photographing period or the image analysis period may be set as the shortest, for example, in units of "1 day".

Next, the collapse warning method through the structure deformation monitoring having the above configuration will be described with reference to the flowchart shown in FIG.

First, at least one or more markers 2 of the collapse warning object structure 1 are formed, and the photographing terminal 200 is located at a suitable position to photograph an area in which the markers 2 are included. ) Is installed.

The photographing terminal 200 photographs a region of interest of the structure 1 on which the marker 2 is formed at a predetermined interval, and provides the photographing terminal 200 to the service providing apparatus 100. In this case, the photographing period may be arbitrarily set by the user or may be provided from the service providing apparatus 100.

When the photographed image is received from the photographing terminal 200 (ST10), the service providing device 100 compares the current photographed image with the previously photographed initial photographed image and determines whether there is a change (ST20).

When the service providing apparatus 100 determines that a change has occurred in the current photographed image at step ST20, the service providing apparatus 100 calculates a horizontal displacement amount and a vertical displacement amount with respect to the ROI, that is, the marker 2 (ST30).

Subsequently, the service providing apparatus 100 calculates a horizontal speed change amount and a vertical speed change amount for a predetermined time based on the horizontal displacement amount and the vertical displacement amount with respect to the marker 2 calculated in step ST30. The risk is calculated based on the difference between the horizontal speed change and the vertical speed change (ST40). In this case, the risk calculation method is the same as Equation 1 above. That is, the risk is calculated as the ratio of the vertical speed change amount and the vertical speed change amount for a predetermined time t.

The service providing device 100 compares the risk calculated in step ST40 with a preset reference risk level (ST50), and provides the collapse warning information to the corresponding administrator terminal 300 (ST60).

Meanwhile, when the risk calculated in step ST40 is less than the reference risk, the service providing device 100 searches for a captured image period corresponding to the risk range including the current risk in the preset multistage risk range (ST70).

The service providing apparatus 100 compares the currently detected photographed image period and the currently set photographed image period to change and set the photographing period of the photographing terminal 200 to the photographed image period detected in step ST70 when the photographed image period is different. Request (ST80). In this case, the service providing apparatus 100 provides the shooting period change setting request information to the administrator terminal 300 to allow the administrator to change the shooting cycle of the corresponding shooting terminal 200 or communicate with the shooting terminal 200. It is possible to change and set the shooting cycle of the photographing terminal 200 automatically.

In addition, in the present invention, when the risk calculated in step ST40 is less than the reference risk, the service providing device 100 searches for an image analysis period corresponding to the risk range including the current risk of the preset multi-stage risk range; Then, it may be operated to determine the risk by performing an image analysis process on the photographed image provided from the photographing terminal 200 based on this.

Also, in the present invention, when the risk according to the difference between the horizontal speed change amount and the vertical speed change amount by the captured image is greater than the reference risk level, the collapse warning information is provided at the point of time, but for detecting the vibration state on the structure. A vibration sensor (not shown) may be further installed, and the service providing device may be configured to change and set a reference risk according to the vibration state of the structure provided from the vibration sensor. In other words, the higher the vibration level of the structure, the smaller the reference risk value may be set.

That is, according to the embodiment, by analyzing the photographed image of the structure to provide the collapse warning information to the manager terminal when the horizontal displacement amount is greater than a certain multiple of the vertical displacement amount, the management warning of the structure more efficiently can do.

On the other hand, in the present invention, when the horizontal speed change amount and the vertical speed change amount of the structure increase similarly at the same time, even if the displacement amount in each direction is more than a certain level, the current risk is calculated to be low and the collapse warning information is appropriately timed to the manager terminal. May not be provided.

Accordingly, in the present invention, in consideration of the above situation, it is determined whether the horizontal displacement amount or the vertical displacement amount calculated through image analysis is equal to or greater than a preset reference displacement amount, and thus the displacement amount of at least one of the horizontal displacement amount or the vertical displacement amount is determined as a reference. If the displacement amount is higher than that, it is also possible to provide collapse warning information to the relevant manager terminal without calculating the risk. At this time, the current risk calculation is performed when both the horizontal displacement and the vertical displacement are less than the reference displacement.

Claims

A photographing terminal installed around the structure and photographing a region of interest of the structure;

An administrator terminal for outputting received collapse warning information,

Comparing the previous photographed image and the current photographed image of the structure provided from the photographing terminal, the horizontal speed change amount and the vertical speed change amount for the ROI are respectively calculated, and the difference between the horizontal speed change amount and the vertical speed change amount is based on the difference. If the level is greater than, collapse warning system using structural deformation monitoring, comprising a service providing device for providing a structure collapse warning information to the administrator terminal.
The method of claim 1,

The service providing apparatus is configured to calculate a current risk based on a ratio of a horizontal speed change amount and a vertical speed change amount, and determine whether the current risk level is higher than or equal to a preset reference risk level. system.
The method of claim 2,

The reference risk level is collapse warning system using structural deformation monitoring, characterized in that set to a value in the range of "4 ~ 6" or "1/6 ~ 1/4".
The method of claim 1,

When the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing apparatus captures the photographing terminal based on a shooting period corresponding to a risk range corresponding to a current risk level among a preset multi-stage risk range. Disintegration warning system using structural deformation monitoring, characterized in that the cycle change.
The method of claim 1,

When the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing device may be configured to later capture images based on an image analysis period corresponding to a risk range including a current risk level among a preset multi-stage risk range. Collapse warning system using structure deformation monitoring, characterized in that it is configured to perform a risk calculation process.
The method of claim 1,

Further installing a vibration sensor for detecting the vibration state on the structure,

The service providing apparatus changes and sets a reference level for determining a risk according to the vibration state of the structure provided from the vibration sensor, but sets the reference level value to decrease as the vibration level of the structure increases. Collapse warning system.
The method of claim 1,

The service providing apparatus calculates a horizontal displacement amount and a vertical displacement amount with respect to the ROI, and calculates a horizontal speed change amount and a vertical speed change amount based on the horizontal displacement amount and the vertical displacement amount for a predetermined time.

When the displacement amount of at least one of the horizontal displacement amount or the vertical displacement amount is more than the predetermined reference displacement amount collapse warning system using structure deformation monitoring, characterized in that configured to provide the warning information to the administrator terminal.
A first step of photographing a region of interest of the structure in a photographing terminal and providing the same to a service providing apparatus;

A second step of comparing a current photographed image provided from the photographing terminal with a pre-stored previously photographed image and determining whether to change in the service providing apparatus;

A third step of calculating a horizontal displacement and a vertical displacement in a corresponding region of interest when a change occurs as a result of comparing the current photographed image with a previous photographed image in the service providing apparatus;

A fourth step of calculating a horizontal speed change amount and a vertical speed change amount according to a time change amount based on the horizontal displacement amount and the vertical displacement amount in the service providing apparatus;

A fifth step of determining whether a difference between a horizontal speed change amount and a vertical speed change amount is greater than or equal to a reference level in the service providing apparatus;

When the difference between the horizontal speed change and the vertical speed change in the service providing apparatus is more than the reference level, the collapse using the structure deformation monitoring comprising a sixth step of providing the structural collapse warning information to the administrator terminal Warning method.
The method of claim 8,

In the fifth step, the service providing apparatus calculates a current risk based on a ratio of a horizontal speed change amount and a vertical speed change amount, and determines whether the current risk level is greater than or equal to a preset reference risk level. Used collapse warning method.
The method of claim 9,

The reference risk is collapse warning method using the structure deformation monitoring, characterized in that set to a value in the range of "4 ~ 6" or "1/6 ~ 1/4".
The method of claim 8,

In the fifth step, when the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing apparatus searches for a shooting period corresponding to a risk range corresponding to a current risk level among a preset multi-stage risk range. If it is determined that the shooting cycle is different by comparing the retrieved shooting cycle with the current shooting cycle, the corresponding shooting cycle change setting information is provided to the shooting terminal.

And the photographing terminal automatically changes and sets a photographing setting period based on the photographing period change setting report provided from the service providing device.
The method of claim 8,

In the fifth step, when the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing apparatus searches for a shooting period corresponding to a risk range corresponding to a current risk level among a preset multi-stage risk range. If it is determined that the shooting cycle is different by comparing the retrieved shooting cycle with the current shooting cycle, the corresponding shooting cycle change setting information is provided to the administrator terminal.

The manager terminal outputs a shooting cycle change setting report provided from the service providing device to request the manager to change the shooting cycle of the shooting terminal, the collapse warning method using the structure deformation monitoring.
The method of claim 8,

In the fifth step, if the difference between the horizontal speed change amount and the vertical speed change amount is less than a reference level, the service providing apparatus searches for an image analysis period corresponding to a risk range corresponding to a current risk level among multiple risk ranges. The collapse warning method using the structural deformation monitoring, characterized in that for calculating the horizontal displacement and the vertical displacement for the photographed image on the basis.
The method of claim 8,

In the first step, the vibration state of the structure is additionally provided to the service providing apparatus in the vibration sensor installed on the structure.

The service providing apparatus is configured to change the reference level for determining the risk according to the vibration state provided from the vibration sensor, the structure deformation monitoring characterized in that the reference level value is set to be smaller as the vibration level of the structure is higher Used collapse warning method.
The method of claim 8,

In the third step, the service providing apparatus checks whether the horizontal displacement amount or the vertical displacement amount is greater than or equal to a preset reference displacement amount, and when the displacement amount of at least one of the horizontal displacement amount or the vertical displacement amount is equal to or greater than the reference displacement amount, collapse warning information is provided. Collapse warning method using structural deformation monitoring, characterized in that provided to the administrator terminal.