KR101409814B1 - Apparatus For Detecting Crack - Google Patents
Apparatus For Detecting Crack Download PDFInfo
- Publication number
- KR101409814B1 KR101409814B1 KR1020140037830A KR20140037830A KR101409814B1 KR 101409814 B1 KR101409814 B1 KR 101409814B1 KR 1020140037830 A KR1020140037830 A KR 1020140037830A KR 20140037830 A KR20140037830 A KR 20140037830A KR 101409814 B1 KR101409814 B1 KR 101409814B1
- Authority
- KR
- South Korea
- Prior art keywords
- main body
- crack
- photographing means
- concave portion
- coupled
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J5/00—Manipulators mounted on wheels or on carriages
- B25J5/007—Manipulators mounted on wheels or on carriages mounted on wheels
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
- G01B3/205—Slide gauges provided with a counter for digital indication of the measured dimension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A crack measuring apparatus according to the present invention includes a body 100 having a space inside thereof and having a front surface 103 opened, a front surface 103 coupled to one surface 103 of the opened main body 100, And the other surface 103 of the main body 100 facing the one surface 103 of the main body 100 is formed so as to be spaced apart from the measurement plate 130 by a predetermined distance D, A photographing means 140 for photographing a crack seen through the scale 135 and the measuring plate 130 and a photographing means 140 attached to the side surface of the main body 100 for moving the main body 100, When the main body 100 is moved in one direction as the wheel 160 rotates, the photographing unit 140 can photograph the information captured by the scale 135 together with the scale 135, .
Description
The present invention relates to a crack measuring apparatus.
Concrete has a characteristic of being resistant to compression, but relatively weak in tensile strength. Due to these weak tensile properties, cracks, which greatly affect the stability, durability, and usability of concrete structures, are becoming serious degradation problems. Measurement and analysis of concrete surface cracks are one of the most basic and important tasks in terms of maintenance of concrete structures as one of the investigation and diagnosis items for diagnosis of concrete structures, life prediction and so on.
Conventional crack management was performed by visual inspection of the inspectors and measurement of cracks using equipment such as crack magnifiers and by directly recording characteristics of cracks. However, such conventional crack management requires a lot of time and manpower, and inspectors are subject to supervision. Therefore, not only objectivity is insufficient, but also structures can not be accessed, which is often difficult to measure. Therefore, studies are being conducted to automate and quantify problems with conventional crack management through image processing techniques.
Previous studies on concrete crack image processing have been conducted to investigate micro cracks using a microscope according to the size of the cracks and macro cracks macro-cracks). The former was mainly focused on quantitatively expressing the distribution of microcracks in concrete using image processing techniques, and the latter was focused on the study of accurately measuring crack width, length, and distribution. In particular, as disclosed in the patent documents of the following prior art documents, there has recently been proposed a technique for extracting cracks from a concrete surface crack image and measuring the crack width more accurately than conventional methods, Separable systems are also being developed.
However, there is still a lack of research on crack measurement devices using image processing techniques. Particularly, there is a problem that the crack width measuring apparatus developed in the past does not show much better results than the crack magnifier in crack detection, accuracy, and analytical ability.
SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art described above. One aspect of the present invention includes a transparent measuring plate marked with a scale and a photographing means for photographing a scale and a crack together, Which is capable of increasing the crack height.
A crack measuring apparatus according to an embodiment of the present invention includes a body having a space therein and having an open side, a measurement plate coupled to one side of the opened body and formed with a transparent scale, A photographing means coupled to the other surface of the main body facing the one surface of the main body so as to be spaced apart from the main body and photographing a crack visible through the scale and the measurement plate; And when the main body moves in one direction as the wheel rotates, the photographing means transmits information about the scale and the crack together to another electronic device.
In addition, in the crack measuring apparatus according to the embodiment of the present invention, the body is formed as a hexahedron having one surface and the other surface arranged in parallel.
Further, in the apparatus for measuring cracks according to an embodiment of the present invention, the apparatus further includes a handle coupled to the body and extending outward.
Further, in the crack measuring apparatus according to the embodiment of the present invention, the handle is coupled to the side surface of the main body, and the angle between the side surface and the side surface of the main body is adjustable.
Further, in the crack measuring apparatus according to an embodiment of the present invention, the apparatus further includes light emitting means coupled to the body, for emitting light in the cracking direction.
Further, in the crack measuring apparatus according to the embodiment of the present invention, the photographing means is a camera.
Further, in the crack measuring apparatus according to the embodiment of the present invention, the photographing means transmits information photographed by radio to the electronic apparatus.
The crack measuring apparatus according to an embodiment of the present invention may further include a distance measuring unit connected to the wheel and measuring a distance the main body moves based on the number of revolutions of the wheel.
In the crack measuring apparatus according to the embodiment of the present invention, one surface is fixed to the other surface of the main body, a first recessed portion recessed in the thickness direction is formed on one surface, and a second recessed portion recessed in the thickness direction is formed on the other surface. A third concave portion that is recessed from one side surface in the center direction and connected to the first concave portion and the second concave portion and is depressed in the center direction from the other side surface to form the first concave portion and the second concave portion, A second concave portion formed in a shape corresponding to the second concave portion and having one side inserted into the second concave portion and the other side coupled to the photographing means, A first pivoting part pivoted vertically from one surface of the second fastening part to be in contact with the third recessed part and having a first projection formed at a distal end thereof engaged with the first recessed part, And a second turning part which is pivoted so as to protrude vertically from one surface and which is in contact with the fourth concave part and in which the second projection formed at the distal end is caught by the first concave part.
Further, in the crack measuring apparatus according to the embodiment of the present invention, it is preferable that the apparatus further comprises an extension part for moving the second rotary part in a direction away from the second coupling part, Direction.
In the crack measuring apparatus according to an embodiment of the present invention, the apparatus further includes a support rod extending from a side surface of the main body to the image capturing means and supporting a side surface of the image capturing means.
The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.
Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.
According to the present invention, it is possible to enhance the detection, accuracy, and analysis capability of cracks by providing a transparent measurement plate marked with a scale and a photographing means for photographing the scale and the crack together.
In addition, according to the present invention, it is possible to simultaneously capture a scale and a crack while moving by using a wheel, and thus it is easy to measure a crack over a certain range.
1 and 2 are perspective views of a crack measuring apparatus according to an embodiment of the present invention,
3 is a side view of a crack measuring apparatus according to an embodiment of the present invention,
FIG. 4 is a plan view of a crack measuring apparatus according to an embodiment of the present invention,
5 is an exploded perspective view of the other surface of the first fastening part and the main body of the crack measuring apparatus according to the embodiment of the present invention,
6 is a perspective view illustrating the operation of the second fastening part of the crack measuring apparatus according to the embodiment of the present invention,
FIGS. 7 to 8 are perspective views showing the coupling relationship of the first fastening portion, the second fastening portion, and the photographing means of the crack measuring apparatus according to the embodiment of the present invention, and FIGS.
9 to 10 are conceptual diagrams illustrating a process of measuring cracks in a tunnel using a crack measuring apparatus according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "first "," second ", and the like are used to distinguish one element from another element, and the element is not limited thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIGS. 1 and 2 are perspective views of a crack measuring apparatus according to an embodiment of the present invention, and FIG. 3 is a side view of a crack measuring apparatus according to an embodiment of the present invention.
1 to 3, a crack measuring apparatus according to an embodiment of the present invention includes a
The
The
The photographing means 140 photographs the
The photographing means 140 is coupled to the
In order to fix the photographing means 140 to the
In addition, as shown in Figs. 1-2, a
The
The crack measuring apparatus according to an embodiment of the present invention can be used to measure cracks in all structures, but can be used particularly to measure cracks in tunnels.
9 to 10 are conceptual diagrams illustrating a process of measuring cracks in a tunnel using a crack measuring apparatus according to an embodiment of the present invention.
First, as shown in FIG. 9, the operator grasps the
Next, as shown in FIG. 10, the operator can grasp the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
100: main body 103: one side of the main body
105: Face of the main body 107: Frame
108: support bar 109: plate
109a: opening 110: handle
113: flange 115: hole
117: pin 120: light emitting means
123: engaging portion 130: measuring plate
135: scale 140: photographing means
141:
141b: second
141d: fourth concave portion 142: bolt
143: second fastening part 145: first fastening part
145a: first projection 147: second east portion
147a: second projection 149: extension part
150: support rod 160:
170: Distance meter 200: Electronic device
300: Concrete surface C: Crack
D: Distance between the measuring plate and the photographing means
Claims (11)
A measuring plate coupled to one side of the opened main body and having a transparent mark formed therein;
A photographing means coupled to the other surface of the main body facing the one surface of the main body so as to be spaced apart from the measurement plate by a predetermined distance and photographing a crack visible through the scale and the measurement plate; And
A wheel provided on a side surface of the main body so that the main body moves;
Lt; / RTI >
And when the main body moves in one direction as the wheel rotates, the photographing means transmits the photographed information of the scale and the crack together to a separate electronic device.
Wherein the main body is formed by a hexahedron having one surface and the other surface arranged in parallel.
A handle coupled to the body and extending outwardly;
Further comprising:
Wherein the handle is coupled to a side surface of the main body, the angle of which is adjustable with respect to a side surface of the main body.
Light emitting means coupled to the body for emitting light in the cracking direction;
Further comprising:
Wherein the photographing means is a camera.
Wherein the photographing means transmits information photographed by radio to the electronic device.
A distance measuring unit, connected to the wheel, for measuring a distance traveled by the main body based on the number of rotations of the wheel;
Further comprising:
A first concave portion formed on one side of the body and having a first concave portion recessed in the thickness direction thereof and a second concave portion recessed in the thickness direction on the other side thereof, And a third concave portion connected to the second concave portion, the first concave portion being recessed in the center direction from the other side to form a fourth concave portion connected to the first concave portion and the second concave portion;
A second coupling part formed in a shape corresponding to the second concave part and having one side inserted into the second concave part and the photographing means coupled to the other side;
A first pivoting part pivoted vertically from one surface of the second fastening part to be in contact with the third recessed part and having a first projection formed on a distal end thereof engaged with the first recessed part; And
A second pivoting part pivoted vertically from one surface of the second fastening part to be in contact with the fourth recess and having a second projection formed on the end thereof engaged with the first recessed part;
And a crack detector.
An extension part for moving the second turning part in a direction away from the second fastening part;
Further comprising:
And an elastic force acts on the extended portion in a direction toward the second fastening portion.
A supporting rod extending from a side surface of the main body to the photographing means and supporting a side surface of the photographing means;
Further comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020140037830A KR101409814B1 (en) | 2014-03-31 | 2014-03-31 | Apparatus For Detecting Crack |
Applications Claiming Priority (1)
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KR1020140037830A KR101409814B1 (en) | 2014-03-31 | 2014-03-31 | Apparatus For Detecting Crack |
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KR101409814B1 true KR101409814B1 (en) | 2014-06-24 |
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KR1020140037830A KR101409814B1 (en) | 2014-03-31 | 2014-03-31 | Apparatus For Detecting Crack |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102074434B1 (en) * | 2019-08-28 | 2020-02-06 | 주식회사 다담엔지니어링 | Marking Device for safety Diagnosis with Adjustable Length |
KR102234863B1 (en) * | 2020-06-26 | 2021-04-05 | 주식회사 동우기술단 | Device for measuring width of crack in concrete slab |
KR20210068731A (en) * | 2019-12-02 | 2021-06-10 | 국토안전관리원 | Diagnostic device for tunnel |
KR102270770B1 (en) * | 2020-07-14 | 2021-06-29 | 우리기술 주식회사 | Measuring device for crack section |
Citations (4)
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JPH0886601A (en) * | 1994-09-19 | 1996-04-02 | Toyo Consultant Kk | Assisting instrument for investigating crack |
JPH08128015A (en) * | 1994-10-31 | 1996-05-21 | Matsushita Electric Ind Co Ltd | Bridge beam inspection facility and its inspection robot |
JP2001280960A (en) | 2000-03-29 | 2001-10-10 | Nkk Corp | Telemetering method and instrument |
KR20010094657A (en) * | 2000-03-31 | 2001-11-01 | 양경택 | Bridge defect detection method and device using camera-mounted probe |
-
2014
- 2014-03-31 KR KR1020140037830A patent/KR101409814B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0886601A (en) * | 1994-09-19 | 1996-04-02 | Toyo Consultant Kk | Assisting instrument for investigating crack |
JPH08128015A (en) * | 1994-10-31 | 1996-05-21 | Matsushita Electric Ind Co Ltd | Bridge beam inspection facility and its inspection robot |
JP2001280960A (en) | 2000-03-29 | 2001-10-10 | Nkk Corp | Telemetering method and instrument |
KR20010094657A (en) * | 2000-03-31 | 2001-11-01 | 양경택 | Bridge defect detection method and device using camera-mounted probe |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102074434B1 (en) * | 2019-08-28 | 2020-02-06 | 주식회사 다담엔지니어링 | Marking Device for safety Diagnosis with Adjustable Length |
KR20210068731A (en) * | 2019-12-02 | 2021-06-10 | 국토안전관리원 | Diagnostic device for tunnel |
KR102320876B1 (en) * | 2019-12-02 | 2021-11-02 | 국토안전관리원 | Diagnostic device for tunnel |
KR102234863B1 (en) * | 2020-06-26 | 2021-04-05 | 주식회사 동우기술단 | Device for measuring width of crack in concrete slab |
KR102270770B1 (en) * | 2020-07-14 | 2021-06-29 | 우리기술 주식회사 | Measuring device for crack section |
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