KR101872431B1 - Apparatus for Measuring Laying-Gap of Expansion Joint of Bridge - Google Patents

Apparatus for Measuring Laying-Gap of Expansion Joint of Bridge Download PDF

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Publication number
KR101872431B1
KR101872431B1 KR1020170058933A KR20170058933A KR101872431B1 KR 101872431 B1 KR101872431 B1 KR 101872431B1 KR 1020170058933 A KR1020170058933 A KR 1020170058933A KR 20170058933 A KR20170058933 A KR 20170058933A KR 101872431 B1 KR101872431 B1 KR 101872431B1
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KR
South Korea
Prior art keywords
image
expansion joint
unit
measuring unit
bridge
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KR1020170058933A
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Korean (ko)
Inventor
김인배
이병주
박창호
이상래
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한국도로공사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/001—Industrial image inspection using an image reference approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/136—Segmentation; Edge detection involving thresholding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The present invention relates to an apparatus for measuring a laying-gap of an expansion joint of a bridge. By mounting equipment for measuring a laying-gap of an expansion joint on a moving vehicle, the laying-gap of the expansion joint of a bridge is conveniently and rapidly measured by using the moving vehicle to travel on a bridge road, the laying-gap of the expansion joint of for a traveling rode of the bridge is measured without suspension of traffic, and a risk of a safety accident for inspectors is eliminated. An image of the expansion joint is rapidly and conveniently analyzed through a scheme of analyzing a photographed image by applying an image measurement unit for photographing a ground at a high speed as the equipment for measuring the laying-gap of the expansion joint, and a measurement result for the laying-gap of the expansion joint is verified through image information by additionally mounting a step difference measurement unit for measuring a step difference profile with respect to a height of the ground, so that a more accurate measurement result is obtained. The apparatus for measuring the laying-gap of the expansion joint of the bridge includes: a moving vehicle; an image measurement unit; a step difference measurement unit; a protective case; a support rod; a rod driving unit; an operation processing unit; and a data storage unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for measuring a gap in an expansion joint,

BACKGROUND OF THE INVENTION 1. Field of the Invention. More specifically, it is possible to conveniently and quickly measure the distance between the expansion joints of a bridge by using a moving vehicle to travel on the bridge road by installing a measurement device for expansion joints on a moving vehicle, It is possible to measure the distance between the expansion joints of the driving lane and to eliminate the risk of safety accident of the inspector, and it is possible to use the image measuring part capable of high speed photographing , It is possible to analyze the image of the expansion joints quickly and conveniently and to verify the measurement results of the expansion joints by the image information by additionally installing a step difference measuring section capable of measuring the step profile with respect to the height of the ground Of a bridge extension joint part which can produce more accurate measurement result will be.

Generally, in the case of a road structure, particularly a bridge, a plurality of top plates are connected in the longitudinal direction, and a connection portion of the top plate is formed with a stretch joint, which is a predetermined gap, in order to cope with a length varying with a change in temperature in summer or winter .

The spacing for expansion and contraction of the expansion joint is referred to as the disturbance. It is necessary to check the state of the bridge by checking and checking that the amount of change in the disturbance of the expansion joint greatly affects the life or strength of the bridge.

In the present study, the flow measurement of the expansion joint of a bridge is carried out manually by the manpower. In general, the inspector is proceeding with visual inspection of each expansion joint section using a measuring instrument such as a tape measure.

Since the vehicle is running on the bridge road by hand, the measurement of the flow of the expansion joint is measured at the shoulder portion of the bridge road, and in the area of the main road running lane, We can not measure the diurnal variance. Even if the traffic is intercepted, there is a problem that the safety threat of the inspectors continues to exist.

In this way, it is problematic that representative measurement is not enough to evaluate the whole new structure of the bridge structure because the general measurement method of the expansion joint part is mainly in the shoulder part. Particularly, in the case of a bridge in which a lane has been extended, different types of expansion joints are separately provided at the portions of the first and second lanes (existing lanes) and third lanes (extended lanes). In this case, There is a problem that the measurement of the measured expansion and contraction is significantly lacking in representativeness.

Korean Patent No. 10-0636897

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide an apparatus and a method for controlling a bridge, The present invention provides a bridging apparatus for bridging and stretching joints capable of measuring a bridging gap conveniently and quickly, measuring the bridging distance between bridges and a bridge, will be.

Another object of the present invention is to provide a method and apparatus for measuring an image of a stretch joint by quickly and conveniently analyzing an image taken by an image measuring unit by applying an image measuring unit capable of taking a high- And a step difference measurement unit capable of measuring a step profile with respect to the height of the ground surface is additionally provided, it is possible to verify the measurement result of the expansion joint by the image information through the step profile information, The present invention is to provide an apparatus for measuring the distances between adjacent bridges.

It is a further object of the present invention to simplify the data processing of the image measuring unit and the step difference measuring unit by comparing the GPS information of the moving vehicle with the bridge position so that the image measuring unit and the step difference measuring unit operate only at the bridge position, The present invention also provides a bridging apparatus for bridging expansion joints that minimizes exposure to the outside environment to prevent damage and enhance durability.

It is still another object of the present invention to provide a method and apparatus for measuring an inclination angle of an image measuring unit and a step measuring unit, And a distance measuring device for measuring the distance between the bridge and the joint.

The present invention relates to an apparatus for measuring flow distances to an expansion joint of a bridge, comprising: a moving vehicle; An image measuring unit mounted on the moving vehicle and photographing the ground during movement of the moving vehicle; And an arithmetic processing unit for receiving the image information photographed by the image measuring unit, analyzing the received image information to extract a stretch joint image, and analyzing the extracted stretch joint image to calculate a stretch of the stretch joint unit Wherein the first and second joints are connected to each other by a connecting member.

At this time, the operation processing unit may extract the expansion joint image by comparing the image information of the discontinuous interface among the image information received from the image measurement unit, with the previously stored expansion joint reference image information.

Further, the discontinuous boundary surface is characterized by being a discontinuous boundary surface based on light and shade.

The arithmetic processing unit may calculate a separation distance between the discontinuous boundary surfaces in the extracted expansion joint image, and calculate the separation of the expansion joint by applying the calculated separation distance to a predetermined actual distance conversion standard.

The bridge elongation joint gauge measuring apparatus may further include a step difference measuring unit mounted on the moving vehicle and detecting a step profile with respect to the elevation of the ground along the traveling direction of the moving vehicle, And comparing the result of the distraction of the stretch joint portion calculated based on the image information of the image measuring portion with the step profile information.

In addition, the moving vehicle may be equipped with a GPS receiver, and the bridge stretch joint measuring apparatus may further include a controller receiving the GPS information received through the GPS receiver and controlling the operation state of the image measuring unit and the step difference measuring unit .

The controller may further include a data storage unit for storing position information of the bridge, wherein the controller compares the received GPS information with the bridge position information stored in the data storage unit, And the operating state of the step difference measurement unit.

In addition, the image photographed by the image measuring unit and the step profile detected by the step measuring unit may store the image and the step profile at the corresponding time point in unit time intervals, The image and the step profile stored in each unit time interval may be set within a time interval within which adjacent ones overlap each other.

In addition, the bridging and expansion joint measuring apparatus of the bridge may include a protective case mounted on the moving vehicle and having a receiving space formed therein; A support rod installed in the protective case so as to be able to be drawn in and drawn out; And a rod driving unit for moving the support rod so that the support rod is drawn in and out of the protective case. The image measurement unit and the step difference measurement unit may be mounted at the end of the support rod.

Also, the controller may control the operation of the load driver by comparing the GPS information with the bridge position information stored in the data storage unit.

A temperature sensor may be mounted on the support rod.

The support rod may be provided with an inclination angle sensor capable of measuring the inclination angle of the support rod during movement of the moving vehicle, and the arithmetic processing unit may calculate the measured value of the inclination angle sensor in the process of analyzing the extracted expansion joint image It is possible to calculate the divergence of the expansion joint.

According to the present invention, it is possible to conveniently and quickly measure the distance between the expansion joints of a bridge by using a moving vehicle to travel on the bridge road by installing a measurement device for expansion joints on a moving vehicle, It is possible to measure the distances between the expansion joints of the running lane of the vehicle and the risk of safety accident of the inspector.

In addition, by applying an image measuring unit capable of shooting at a high speed on the ground as an apparatus for measuring distracting portions of a telescopic joint mounted on a moving vehicle, it is possible to quickly and conveniently analyze an image of a telescopic joint by analyzing a captured image of the image measuring unit, It is possible to verify the measurement result of the stretching joint by the image information through the step profile information by adding the step difference measuring part which can measure the step profile with respect to the height of the ground, have.

Further, by comparing the GPS information of the moving vehicle with the bridge position, the image measuring unit and the step difference measuring unit are operated only at the bridge position, the data processing of the image measuring unit and the step difference measuring unit can be simplified, The exposure is minimized to prevent damage and improve the durability.

In addition, it is possible to calculate the accurate distant distance even if the measurement state changes according to the external condition by measuring the change of the inclination angle of the image measuring unit and the step difference measuring unit and correcting the result by reflecting the measurement result in the calculation process of the distant- There is an effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram conceptually showing a configuration of a bridging apparatus for a bridge expansion joint according to an embodiment of the present invention;
FIG. 2 is a functional block diagram functionally showing a configuration of a bridging apparatus for a bridge expansion joint according to an embodiment of the present invention. FIG.
3 is a view for explaining a method of measuring an image and a level difference of a bridging apparatus according to an embodiment of the present invention,
4 and 5 are views for explaining an image analysis method for various photographed images photographed through an image measuring unit of a bridging apparatus for a bridge expansion joint according to an embodiment of the present invention;
6 is a view for explaining a step profile analysis method according to an embodiment of the present invention,
FIG. 7 is a conceptual diagram conceptually showing a configuration of an apparatus for measuring distant flow of a bridge expansion joint according to another embodiment of the present invention. Referring to FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a conceptual diagram conceptually showing the construction of a bridge stretch joint measuring device according to an embodiment of the present invention. FIG. 2 is a schematic view showing a configuration of a bridge stretch joint measuring device according to an embodiment of the present invention, FIG. 3 is a view for explaining a method of measuring an image and a step difference of an apparatus for measuring a bridge expansion joint in a bridge joint according to an embodiment of the present invention. FIGS. 4 and 5 are views FIG. 6 is a view for explaining an image analysis method for various photographed images photographed through the image measuring unit of the bridge stretch joint measuring unit according to the embodiment, and FIG. 6 is a view for explaining the image analyzing method of the bridge stretching joint measuring unit according to an embodiment of the present invention. And a step difference measuring unit for measuring a step difference.

The apparatus for measuring distant flow of a bridge expansion joint according to an embodiment of the present invention is an apparatus for measuring distant distances to a stretch joint 10 of a bridge and includes a moving vehicle 100, an image measuring unit 200, 300, and may further include a step difference measurement unit 400. [0043]

As described in the Background of the Invention, the expansion joint 10 of the bridge is installed at the connecting portion of the bridge 1 to allow the bridge to expand and contract. In the lower portion thereof, Or a pier 2 is provided. The expansion joint 10 removes a certain portion of the end portion of the connecting portion of the upper plate 1 and is provided with metal supporting plates 11 on the both upper plates at the removed stepped portions, The elastic body 12 is interposed and the concrete in the outer space of the support plate 11 is filled with the finished concrete 13 to form the finished concrete 13. The expansion joint 10 is formed in a direction transverse to the bridge road in the width direction.

The moving vehicle 100 is a vehicle capable of running on the road for the measurement of distant flow, and the type of vehicle can be variously selected.

A protective case 610 having an accommodation space formed therein can be mounted on the upper portion of the moving vehicle 100 and the protective case 610 is provided with a support rod And a rod driving unit 630 for moving the support rod 620 so that the support rod 620 may be drawn into and drawn out from the protective case 610. The load driving unit 630 may include a driving motor and a gear box or the like and may move the support rod 620 according to a user's operation so as to be drawn out from the protective case 610 or into the protective case 610 . The support rod 620 may be equipped with an image measuring unit 200 and a step difference measuring unit 400, which will be described later.

An image measuring unit 200 and an arithmetic processing unit 300 are mounted on the moving vehicle 100. The image measuring unit 200 is coupled to an end portion of the support rod 620 and moves according to the movement of the support rod 620 The operation processing unit 300 can be inserted into the protective case 610 together with the support rod 620 or drawn out to the outside. Of course, the arithmetic processing unit 300 may be mounted in an indoor space of the moving vehicle 100 as a separate apparatus.

The image measuring unit 200 is mounted to photograph the ground during the movement of the moving vehicle 100, and is configured to enable two-dimensional high-speed shooting.

The operation processing unit 300 receives the image information photographed by the image measuring unit 200, analyzes the received image information to extract the expansion joint image, analyzes the extracted expansion joint image, ).

More specifically, the moving vehicle 100 is provided with a data storage unit 310 separately from the calculation processing unit 300, and the position information of the bridge is stored in the data storage unit 310.

The image measuring unit 200 is a device capable of two-dimensional high-speed photographing and is mounted on a support rod 620 of the moving vehicle 100 so as to photograph the ground while the moving vehicle 100 is running. At this time, the images photographed by the image measuring unit 200 are stored in the data storage unit 310 at the respective time points S1, S2, and S3 at the unit time intervals. In this case, the unit time interval is a range within a time interval in which adjacent images S1, S2, and S3 stored in units of time intervals (S1 and S2, or S2 and S3) overlap each other as shown in FIG. 3 Respectively. According to this configuration, when the images S1, S2, and S3 stored in units of time intervals are sequentially arranged in chronological order, all the ground regions can be photographed and stored without an omitted region based on the traveling direction of the moving vehicle 100 .

The operation processing unit 300 analyzes the image captured by the image measuring unit 200 or analyzes the image information received from the image measuring unit 200 to determine whether the image information indicating the stretching / do. For example, as shown in FIG. 3, image information on the stretch joint portion in the photographed image S2 can be found.

At this time, the operation processing unit 300 extracts the expansion joint image by comparing the image information about the discontinuous interface among the image information received from the image measurement unit 200 with the previously stored expansion joint reference image information.

That is, as shown in FIGS. 1 and 3, the expansion joint 10 has a structure in which metal support plates 11 are arranged apart from each other and an elastic body 12 such as rubber is interposed therebetween As shown in FIG. 4, the support plate 11 made of a metal is relatively bright due to reflection of light, and the elastic body 12 therebetween is relatively As a dark area. Accordingly, a bright region and a dark region appear along the interface between the support plate 11 and the elastic body 12, and a discontinuous interface NF based on light and dark is formed along the interface.

According to this characteristic, it is determined whether or not a discontinuous interface (NF) exists in the captured image in the process of analyzing the image captured and stored by the image measuring unit 200. If there is a discontinuous interface NF, It is determined whether a bright region, a dark region and a bright region appear adjacent to each other as in the case of the expansion joint unit 10. If such a dark region exists based on the discontinuous boundary face NF, And extracts the photographed image as an expansion joint image.

In the data storage unit 310, various types of expansion joint reference image information are stored according to the type of the expansion joint, and the operation processor 300 determines the size of the expansion joint reference The image information is compared with the image information received from the image measuring unit 200, and the corresponding image is extracted as the expansion joint image according to the comparison result.

After extracting the expansion joint image based on the image information about the discontinuous interface NF of the image information received from the image measurement unit 200, the operation processor 300 extracts the expansion joint image from the extracted expansion joint image information NF, and compares the calculated distance d with the previously stored distance reference image information to calculate the divergence of the expansion joint 10.

That is, it is possible to calculate the actual distant distance through the relationship between the distance and the actual distance in the image photographed by the image measuring unit 200. This is because, in the initial setting process for the image measuring unit 200, It is possible to calculate easily by applying the actual distance conversion standard which is set in advance in relation to the distance.

For example, if an object having an actual distance of 30 cm is photographed through the image measuring unit 200 in the setting process for the image measuring unit 200 and the distance shown in the captured image is set to be 5 cm, The ratio of the distance, that is, the actual distance conversion criterion is set to a relation of 6: 1. When the stretching joint portion is photographed through the image measuring unit 200 set in this way, if the distance between the discontinuous boundary surfaces NF is 2 cm, the relationship of 6: 1, which is the actual distance conversion standard, It is easy to calculate that the distance between the trees is 12cm, which is six times of this. Of course, the actual distance conversion criterion can be variously set in the process of setting the image measuring unit 200.

On the other hand, when the moving vehicle 100 travels in the direction perpendicular to the direction of the expansion joint 10 as shown in Fig. 3, as shown in Fig. 4 (a), the discontinuous boundary surface NF When the moving vehicle 100 travels in a direction intersecting obliquely with respect to the stretch joint 10, the discontinuous boundary surface NF on the photographing screen as shown in FIG. 4 (b) In the oblique direction.

The support plate 11 and the elastic body 12 of the expansion joint 10 are disposed along the direction perpendicular to the discontinuous interface NF when the captured image is analyzed around the discontinuous interface NF And the distances d in the perpendicular direction to the discontinuous interface NF can be calculated to calculate the distant flow distances to the expansion joint 10 in the above-described manner.

In addition, there are various types of expansion joints 10, for example, a finger-type expansion joint, etc. In this case, a photographed image may be displayed as shown in FIG. The discontinuous boundary surface NF due to the support plate 11 and the elastic body 12 also appears in the captured image and the separation distance d in the perpendicular direction is calculated on the basis of the separation distance d to calculate the distant flow distance to the expansion joint 10 can do.

According to the above-described configuration, the apparatus for measuring distances of a bridge expansion / contraction portion according to an embodiment of the present invention includes a video measurement unit 200 mounted on a moving vehicle 100, It is possible to conveniently calculate the disturbance of the expansion joint 10 by photographing the joint 10 and analyzing the photographed image so that it is possible to measure the extension of the expansion joint to the running lane of the bridge without interrupting the traffic It is possible to eliminate the risk of safety accident of the inspector, and it is possible to measure the expansion joint portion disturbance very conveniently and quickly.

In addition to the image measuring unit 200, the moving vehicle 100 may be equipped with a step measuring unit 400 for detecting a step profile with respect to the elevation of the ground along the traveling direction of the moving vehicle. The step measurement unit 400 may be formed in such a manner that the measurement light is irradiated toward the ground and the height of the ground is calculated through the time variation of the measurement light reflected from the ground. This measurement light is continuously irradiated on the ground along the line L formed along the vehicle traveling direction as shown in Fig.

The step profile information about the ground measured by the step measuring unit 400 is also stored in the data storage unit 310 at the corresponding time point per unit time interval as in the image information of the image measuring unit 200, At this time, the unit time interval is set to a range within a time interval in which adjacent stepped profiles are overlapped with each other in each unit time interval.

For example, step profile information is continuously measured by the step measuring unit 400 as shown in FIG. 6, and information on the step profile information is stored in the data storage unit 310 so as to overlap with each other at unit time intervals. That is, step profile information such as T1, T2, and T3 overlapping with each other is stored in the data storage unit 310. [

The unit time interval at which the step profile information is stored may be synchronously stored in the same time interval as the unit time interval at which the image information of the image measuring unit 200 is stored, Interval.

The operation processing unit 300 receives the step profile information such as T1, T2, and T3 and compares the step result of the expansion joint calculated based on the image information of the image measurement unit 200 with the step profile information, can do.

That is, since the elevation of the ground is relatively low in the section of the elastic body 12 between the support plates 11 due to the structure of the expansion joint 10, And the formed section appears. The distance d of the section where the step is formed at a low level means the distances between the ends of the expansion joint 10. Accordingly, the operation processing unit 300 can use the step profile information of the step measuring unit 400 as a verification criterion for the results of the distant distance calculated through the image information of the image measuring unit 200.

Of course, it is possible to directly calculate the distances between the expansion joints 10 through the step profile information through the step measurement unit 400. However, in the actual expansion joint unit 10, foreign substances may flow into the space between the support plates 11, Therefore, it is difficult to calculate accurate distant measurement results only by the step profile information. Therefore, the distant distance can be calculated through the image information of the image measuring unit 200, and the step profile information can be utilized for the verification.

It is also possible to improve the accuracy of the distant measurement results through the verification and to determine the distant distances calculated through the image information of the image measuring unit 200 and the distant distances calculated through the step profile information of the step measuring unit 400, If they appear differently, they can be stored separately so that the actual distances can be manually checked by the inspector.

The mobile vehicle 100 is equipped with a GPS receiver 700 and synchronizes the GPS information of the GPS receiver 700 with the image information and the step profile information of the image measuring unit 200 and the step measuring unit 400 The image measuring unit 200, and the step difference measuring unit 400 may be information on the expansion joint of the bridge.

The moving vehicle 100 is also equipped with a control unit 500 that receives the GPS information received through the GPS receiver 700 and controls the operation state of the image measuring unit 200 and the step measuring unit 400. In addition, the controller 500 also controls the operation of the rod driver 630.

With this configuration, the moving vehicle 100 receives the GPS information of the moving vehicle 100 by the GPS receiver 700 while the moving vehicle 100 is traveling on the to-be-managed road, And the bridge position information stored in the data storage unit 310. When the moving vehicle 100 approaches the bridge before approaching the bridge, the image measuring unit 200 and the step difference measuring unit 400 ) Can be operated.

For example, if it is determined that there is a bridge 100 meters ahead of the position of the moving vehicle 100, the control unit 500 controls the operation of the image measuring unit 200 and the step measuring unit 400 from that point on, The operation of the image measuring unit 200 and the step measuring unit 400 may be stopped after the moving vehicle 100 passes through the bridge.

Since the image measuring unit 200 and the level difference measuring unit 400 can be mounted on the support rod 620, the controller 500 controls the operation of the image measuring unit 200 and the level difference measuring unit 400 It is possible to control the operation of the rod driving unit 630 such that the rod 620 is pulled out of the protective case 610. After the moving vehicle passes the bridge, the operation of the image measuring unit 200 and the step measuring unit 400 The operation of the rod driver 630 can be controlled so that the support rod 620 is pulled into the protective case 610. [

Also, the temperature sensor 810 can be mounted on the support rod 620, and the temperature of the point can be precisely measured at the time of measuring the flow rate of the expansion joint 10. By accurately measuring the ambient temperature of the expansion joint 10 in this way, it is possible to more accurately manage the distances between the expansion joint 10 and the expansion joint 10.

A front photographing camera 830 capable of photographing the front of the moving vehicle 100 can be mounted in front of the protective case 610 and the photographing image of the front photographing camera 830 can be continuously stored in the data storing unit 310). With this configuration, even if the GPS reception is not normally performed, the image of the front view camera 830 stored in the data storage unit 310 can be displayed on the basis of the camera image of the front view camera 830 and the image of the step measurement unit 400 Information and step profile information can be ascertained supplementally to which bridge's expansion joint information.

In addition, the GPS receiver 700 can be configured as an apparatus combined with an INS (Inertial Navigation System), so that the position information of the moving vehicle 100 can be accurately grasped even in an environment such as a tunnel have. In addition, the moving vehicle 100 can be equipped with a distance measuring instrument (DMI) that can accurately measure the distance traveled by the vehicle in an environment such as a tunnel, , It is possible to accurately measure the length of the expansion joint of the bridge without any measurement error even when the bridge starts as soon as the tunnel section ends.

FIG. 7 is a conceptual diagram conceptually showing a configuration of an apparatus for measuring distant flow of a bridge expansion joint according to another embodiment of the present invention. Referring to FIG.

The apparatus for measuring gyroscopic elasticity of a bridge according to another embodiment of the present invention may include an image measuring unit 200 and a level difference measuring unit 400 mounted on a moving vehicle 100, The vehicle body can be inclined according to the state of the road in the course of traveling the moving vehicle 100 according to the measuring method. In addition, the horizontal state may be inclined by the external load of the support rod 620 on which the image measuring unit 200 and the step measurement unit 400 are mounted.

When the vehicle body of the moving vehicle 100 or the support rod 620 itself is tilted in an inclined manner, a change occurs in the photographed image of the image measuring unit 200 photographing the ground. When a change occurs in the photographed image, the result of the calculation of the distant point distance of the arithmetic processing unit 300 on the basis of the change shows an inaccurate result.

Therefore, in the apparatus for measuring distances of a bridge expansion joint portion according to another embodiment of the present invention, the inclination angle sensor 820 for measuring the inclination angle of the support rod 620 is mounted on the support rod 620, The controller 300 is configured to calculate the divergence of the expansion joint 10 by reflecting the measurement value of the inclination angle sensor 820 in the process of analyzing the expansion joint image information.

For example, the inclination angle change value of the support rod 620 is stored in the data storage unit 310 during the movement of the moving vehicle 100 through the inclination angle sensor 820 provided on the support rod 620, By matching the change value with the GPS information, it is possible to know the inclination angle of the support rod 620 at the position where the stretch joint 10 is photographed. The operation processing unit 300 analyzes the image information by reflecting the inclination angle of the support rod 620 at the position of the expansion joint unit 10 in the process of analyzing the expansion joint image information. If the measurement value of the inclination angle sensor 820 is 20 ° at the position of the specific expansion joint 10, the separation distance between the discontinuous interface NF and the discontinuous interface NF d of the expansion joint 10, and calculates the slip of the expansion joint 10 based on this correction.

The inclination angle of the support rod 620 is measured by using the inclination angle sensor 820 and is matched to the GPS information and reflected in the expansion joint image information analysis process to perform necessary correction, You can always accurately measure the flow.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: moving vehicle 200: image measuring unit
300: operation processing unit 310:
400: step difference measurement part 500: control part
610: Protective case 620: Support rod
630: Rod driver 700: GPS receiver
810: Temperature sensor 820: Incline sensor
830: Front camera

Claims (12)

delete delete delete delete delete delete An apparatus for measuring a disturbance to an expansion joint of a bridge,
A moving vehicle;
An image measuring unit mounted on the moving vehicle and photographing the ground during movement of the moving vehicle;
A step difference measurement unit mounted on the moving vehicle and detecting a step profile with respect to the height of the ground along the traveling direction of the moving vehicle;
A protective case mounted on the moving vehicle and having a receiving space formed therein;
A support rod mounted on the protective case so as to be able to be drawn in and pulled out, and having the image measuring unit and the step difference measuring unit mounted on an end thereof;
A rod driving unit for moving the support rod so that the support rod is drawn into and out of the protective case;
The image information obtained by the image measuring unit and the step profile information of the ground detected by the step measuring unit are received, the received joint image information is analyzed to extract the expansion joint image, and the extracted joint joint image is analyzed An arithmetic processing unit for comparing the distant result of the calculated expansion joint with the step profile information of the ground received from the step measuring unit and verifying the result; And
A data storage unit
Lt; / RTI >
The operation processing unit compares the image information of the discontinuous interface based on the light and darkness of the image information received from the image measuring unit with previously stored expansion joint reference image information to extract the expansion joint image, And calculates the separation of the expansion joint by applying the calculated separation distance to a preset actual distance conversion reference,
The moving vehicle is provided with a GPS receiver and a control unit receiving the GPS information received through the GPS receiver and controlling the operation states of the image measuring unit, the step difference measuring unit and the rod driving unit,
Wherein the control unit compares GPS information of an applied mobile vehicle with bridge position information stored in the data storage unit and controls operation of the rod driving unit so that the support rod is drawn out before the moving vehicle enters the bridge, Controlling the operation of the image measuring unit and the step difference measuring unit to operate and controlling the operation of the image measuring unit and the step difference measuring unit to stop after the moving vehicle passes through the bridge and controlling the rod driving unit so that the support rod is pulled Characterized in that the bridge is an extension of the bridge.
8. The method of claim 7,
Wherein the image photographed by the image measuring unit and the step profile detected by the step measuring unit are stored in the data storage unit,
Wherein the unit time interval is set to a range within a time interval in which adjoining images and stepped profiles stored respectively for the unit time intervals overlap with each other.
delete delete 8. The method of claim 7,
And a temperature sensor is mounted on the support rod.
8. The method of claim 7,
Wherein an inclination angle sensor capable of measuring an inclination angle of the support rod during movement of the moving vehicle is mounted on the support rod,
Wherein the arithmetic processing unit is configured to calculate a disturbance of the expansion joint by reflecting the measured value of the inclination angle sensor in the process of analyzing the extracted expansion joint image.

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JP2020094475A (en) * 2018-11-29 2020-06-18 株式会社構研エンジニアリング Diagnosis apparatus and diagnosis method for bridge having abnormal joint gap
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CN113155599A (en) * 2021-02-25 2021-07-23 温州际高检测仪器有限公司 Mechanical property tester for finished product of building deformation joint device
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KR102588761B1 (en) 2023-02-13 2023-10-16 (주)홍익기술단 Clearance Measurement Device of Expansion Joint for Bridge Safety Diagnosis
CN117385740A (en) * 2023-10-16 2024-01-12 邯郸市华威公路设计咨询有限公司 Bridge deck state detection device and method for highway bridge
CN117385740B (en) * 2023-10-16 2024-04-16 邯郸市华威公路设计咨询有限公司 Bridge deck state detection device and method for highway bridge

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