KR20050048914A - A safety testing device for bridge with optical monitor - Google Patents
A safety testing device for bridge with optical monitor Download PDFInfo
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- KR20050048914A KR20050048914A KR1020030082658A KR20030082658A KR20050048914A KR 20050048914 A KR20050048914 A KR 20050048914A KR 1020030082658 A KR1020030082658 A KR 1020030082658A KR 20030082658 A KR20030082658 A KR 20030082658A KR 20050048914 A KR20050048914 A KR 20050048914A
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- light receiver
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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
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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
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
본 발명은 레이저장치를 이용하여 도로구조물인 교량의 상판이 변형된 상태를 측정할 수 있도록 한 광학적 감시수단을 갖는 교량 안전진단장치에 관한 것이다.The present invention relates to a bridge safety diagnosis apparatus having an optical monitoring means that can measure the state of the deformation of the top plate of the bridge as a road structure using a laser device.
이는특히, 교각에 지지되는 상판에 지지판을 통하여 수평및 수직방향을 갖는 복수의 수광기를 설치하고, 상기 수광기에 광신호를 반사시켜 위치를 감지하도록 레이저측정기가 설치되며, 상기 레어저 측정기는 제어부에 연결되는 감지센서에 의해 수평상태의 보상이 가능하며 구동수단에 의해 소정의 회전이 가능토록 설치되는 것을 특징으로 한다.In particular, a plurality of light receivers having horizontal and vertical directions are installed on the upper plate supported by the piers through a support plate, and a laser measuring device is installed to reflect a light signal to the light receiver to detect a position. Compensation of the horizontal state is possible by a sensing sensor connected to the control unit, characterized in that the predetermined rotation is possible by the drive means.
이에따라서, 상판의 수평및 수직방향 변형상태를 용이하게 감지하여 대형사고를 미연에 방지하는 것이다.Accordingly, it is easy to detect the horizontal and vertical deformation of the top plate to prevent large accidents in advance.
Description
본 발명은 광학적 감시수단을 갖는 교량 안전진단장치에 관한 것으로서 이는특히, 교각에 지지되는 상판에 지지판을 통하여 수평및 수직방향을 갖는 복수의 수광기를 설치하고, 상기 수광기에 광신호를 반사시켜 위치를 감지하도록 레이저측정기가 설치되며, 상기 레어저 측정기는 제어부에 연결되는 감지센서에 의해 수평상태의 보상이 가능하며 구동수단에 의해 소정의 회전이 가능토록 하는 구성으로 상판의 수평및 수직방향 변형상태를 용이하게 감지하여 대형사고를 미연에 방지하는 광학적 감시수단을 갖는 교량 안전진단장치에 관한 것이다.The present invention relates to a bridge safety diagnostic apparatus having an optical monitoring means, in particular, a plurality of receivers having a horizontal and vertical direction through the support plate on the upper plate supported by the bridge, and reflecting the optical signal to the receiver A laser measuring device is installed to detect a position, and the laser measuring device is capable of compensating the horizontal state by a sensing sensor connected to the control unit and deforming the horizontal and vertical directions of the upper plate in such a manner as to allow a predetermined rotation by a driving means. The present invention relates to a bridge safety diagnosis apparatus having optical monitoring means for easily detecting a state and preventing a large accident in advance.
일반적으로 교량이나 지하터널등 각종 도로 구조물의 경우에 반복적으로 하중이 가해짐에 따라 구조물의 중앙부가 하방으로 휘어지는 현상이 발생되며, 이러한 구조물의 휨 현상은 일정치 이상이 되면 구조물이 붕괴되는 등 대형사고의 원인이 되므로 안전을 위하여 수시로 점검 하여야 된다.In general, in the case of various road structures such as bridges or underground tunnels, the load is repeatedly applied to the center portion of the structure, and the bending of the structure is overwhelmed by a certain amount. As it may cause an accident, it should be checked frequently for safety.
즉, 교량의 경우, 상하 직립상태로 세워 설치된 교각에 다수의 상판을 올려 놓는 방법으로 교량이 시공되며, 교각과 교각 사이의 상판 중앙부가 휨 발생의 최대지점이 되므로, 이를 점검하기 위하여는 교각에 설치된 안전난간에 점검자가 내려가 육안으로 휨상태를 확인하여야 되었다.That is, in the case of the bridge, the bridge is constructed by placing a plurality of top plates on the piers installed upright and upright, and the center of the top plate between the piers and the piers is the maximum point of the occurrence of bending. The inspector went down to the installed safety rail to check the bending state with the naked eye.
그러나, 점검자가 위치된 안전난관과 실제 점검이 필요한 상판 중앙부가 원거리에 있기 때문에 육안으로 확인이 어려워 망원경을 이용하여야 되기 때문에 매우 번거롭고 날씨가 좋지 않거나 야간에는 점검할 수 없었다.However, because the safety barrier where the inspector is located and the central part of the top plate that needs actual inspection are far away, it is difficult to check with the naked eye, so the telescope must be used.
또한, 육안으로 점검하므로서 점검자가 바뀌는 경우나 점검자의 위치등에 따라 기준점이 틀려지므로 정확한 측정이 어려웠다.In addition, since the reference point is changed according to the case where the inspector changes or the position of the inspector by visual inspection, accurate measurement was difficult.
더욱이 상기의 점검을 위하여는 점검자가 교각 아래로 내려가야 되기 때문에 빈번한 점검을 할 수 없어 결국 점검시기를 놓쳐 안전사고의 발생원인이 되었다.Moreover, because the inspector had to go down the pier for the above inspection, the inspection could not be done frequently, so it missed the inspection period and caused the safety accident.
이와같은 문제점을 해결하기 위한 기술이 등록실용신안공보 제265766호에 개시되어 있으며 그 구성은 도1a,b에서와 같이,도로 구조물인 교량 상판의 휨상태를 측정하기 위하여 상판(T)의 중앙에 상하 길이 방향으로 고정된 지지구(1)에 수광기(2)를 장치하며, 고정판(11)과 유동판(12)으로 형성된 위치조절부재(3)를 교각(F)의 상부에 설치한후 이에 레이저측정기(4)를 고정하고, 상기 레이저측정기(4)는 표시창(21)과 온·오프스위치(22)가 장치된 콘트롤시스템(c)과 전기적으로 연결되는 구성으로 이루어 진다.A technique for solving such a problem is disclosed in Korean Utility Model Publication No. 265766, the configuration of which is located in the center of the top plate T to measure the bending state of the bridge top plate as a road structure, as shown in FIGS. 1A and 1B. The receiver 2 is mounted on the supporter 1 fixed in the vertical direction, and the position adjusting member 3 formed of the fixing plate 11 and the flow plate 12 is installed on the upper portion of the piers F. The laser measuring instrument 4 is fixed thereto, and the laser measuring instrument 4 is configured to be electrically connected to the control system c in which the display window 21 and the on / off switch 22 are provided.
그러나, 상기와 같은 안전진단용 점검시스템은, 휨 많을 측정할수 있어 측정의 정확도가 저하되며, 초기위치의 선정시 정확한 선정이 힘들게 되어 많은 편차를 갖게 되고, 초기세팅시 보정작업이 힘들게 되는 단점이 있는 것이다. However, the safety diagnosis check system as described above can measure a large number of deflections, which lowers the accuracy of the measurement, and makes it difficult to accurately select the initial position, resulting in a large number of deviations. will be.
본 발명은 상기한 문제를 해결하기 위하여 발명된 것으로서, 교량 구조물의 상판 변형상태를 레이저로써 간편하고 정확하게 측정할 수 있도록 하고, 기준값의 자체 보상이 가능하여 정확한 측정이 가능하도록 하며, 점검자가 현장에 직접 가지 않아도 원격지에서 변형을 측정하도록 하고, 교량의 안전범위이상으로 변형될때 경보할 수 있도록 하는 광학적 감시수단을 갖는 교량 안전진단장치를 제공하는데 있다.The present invention has been invented to solve the above problems, it is possible to easily and accurately measure the deformation state of the top plate of the bridge structure with a laser, it is possible to compensate the reference value itself to enable accurate measurement, the inspector to the field The present invention provides a bridge safety diagnosis apparatus having optical monitoring means that can measure deformation at a remote location even if it does not go directly, and can warn when it is deformed beyond the safety range of the bridge.
상기 목적을 달성하기 위해, 교각에 지지되는 상판의 일측에 지지판을 통하여 수평및 수직방향을 갖는 복수의 수광기를 설치하고, 상기 수광기에 광신호를 반사시켜 상판의 상태를 감지하도록 교각에 레이저측정기가 설치되며, 상기 레이저 측정기는 제어부와 연결되는 감지센서에 의해 수평상태의 보상이 가능하며 소정의 회전이 가능하도록 구동수단이 설치되는 광학적 감시수단을 갖는 교량 안전진단장치가 제공된다.In order to achieve the above object, a plurality of light receivers having horizontal and vertical directions are installed on one side of the upper plate supported by the pier through a support plate, and the optical beam is reflected on the light receiver to detect the state of the upper plate. The measuring device is installed, the laser measuring device is provided with a bridge safety diagnosis device having an optical monitoring means that can be compensated of the horizontal state by the sensor connected to the control unit and the drive means is installed to enable a predetermined rotation.
이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도2 내지 도4에서와 같이 본 발명은, 복수의 교각(100) 상부에 복수의 상판(120)이 완충연결부재(140)를 통하여 지지된다. 2 to 4, in the present invention, a plurality of upper plates 120 are supported on the plurality of piers 100 through the buffer connection member 140.
그리고, 상기 교각(100)에 지지되는 상판(120)의 일측 저면에 지지판(210)이 돌출되도록 연결되고, 상기 지지판(210)은 호형상으로 형성된다.In addition, the support plate 210 is connected to the bottom of one side of the upper plate 120 supported by the pier 100 to protrude, and the support plate 210 is formed in an arc shape.
또한, 상기 지지판(210)에 수평및 수직방향을 갖는 복수의 반사면(230b)과 그 양측에 위치하는 흡수면(230a)으로 이루어진 수광기(230)가 설치되고, 상기 반사면(230b)에는 기준점(210a)이 설치된다.In addition, a light receiver 230 including a plurality of reflective surfaces 230b having horizontal and vertical directions and absorbing surfaces 230a positioned at both sides thereof is provided on the support plate 210, and the reflective surface 230b is provided on the supporting plate 210. Reference point 210a is installed.
더하여, 상기 수광기(230)에 광신호를 반사시켜 상판(120)의 변형상태를 감지하도록 교각(100)에 레이저측정기(300)가 설치된다.In addition, a laser measuring device 300 is installed in the piers 100 to reflect the optical signal to the light receiver 230 so as to sense the deformation state of the upper plate 120.
상기 레이저측정기(300)는, 구동수단(400)을 통하여 회전가능토록 설치되고, 상기 구동수단(400)은, 저면에 설치되는 나사산(420)을 통하여 구동모터(440)와 치합되는 연결블록(460)으로 이루어 지며, 상기 연결블록(460)을 베어링을 통하여 회전가능토록 지지하면서 교각(100)에 연결되는 하우징(480)이 설치된다.The laser measuring device 300 is installed to be rotatable through the driving means 400, and the driving means 400 is connected to the driving motor 440 through a screw thread 420 installed on the bottom surface of the connecting block ( 460, the housing 480 connected to the piers 100 is installed while supporting the connection block 460 to be rotatable through a bearing.
또한, 상기 나사산(420)의 일측에 회전량을 감지하는 엔코더(440a)가 치합되며, 상기 하우징(480)의 내측에 수평감지센서(480a)가 부착된다.In addition, the encoder 440a for detecting the amount of rotation is engaged with one side of the screw thread 420, and the horizontal sensor 480a is attached to the inside of the housing 480.
그리고, 상기 수평감지센서(480a)와 구동모터(440)및 엔코더(440a)는 제어부(500)와 연결되며, 상기 제어부(500)는, 유무선을 통하여 외부의 제어판넬에 경보신호나 변형데이터를 전달하도록 설치된다.The horizontal sensor 480a, the driving motor 440, and the encoder 440a are connected to the control unit 500, and the control unit 500 transmits an alarm signal or deformation data to an external control panel through a wired or wireless connection. Installed to deliver.
상기와 같은 구성을 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having the configuration as described above are as follows.
도2 내지 도4에서와 같이, 레이저를 이용한 변위측정기(300)에 제어부(500)를 통하여 전원을 공급하면 상기 변위측정기(300)에서 방출되는 레이저광은 수광기(230)를 향하게 된다.2 to 4, when power is supplied to the displacement measuring device 300 using the laser through the control unit 500, the laser light emitted from the displacement measuring device 300 is directed toward the light receiver 230.
이때, 상기 수광기(230)는, 상판(120)의 저면에 돌출되는 지지판(210)즉 상기 변위측정기(300)와 소정거리 이격된 지점에 대향토록 설치된다.In this case, the light receiver 230 is installed to face the support plate 210 protruding from the bottom surface of the upper plate 120, that is, the point spaced apart from the displacement measuring unit 300 by a predetermined distance.
그리고, 상기 변위측정(300)는 그 저면에 연결되는 구동수단(400)및 제어부(500)의 동작에 의해 변위량의 감지후 항상 원래의 상태의 복원되어 전원의 공급시 항상 수평방향으로 길게 형성되는 반사면(230b)을 먼저 측정하게 된다.Then, the displacement measurement 300 is always restored to its original state after the detection of the displacement by the operation of the drive means 400 and the control unit 500 connected to the bottom surface is always formed long in the horizontal direction when supplying power The reflective surface 230b is measured first.
또한, 상기 수광기(230)의 수평방향 반사면(230b)은, 교각에 지지되는 상판의 회전변위를 측정하게 되고, 수직방향 반사면(230b)은 교각의 처짐상태를 감지하게 된다.In addition, the horizontal reflective surface 230b of the light receiver 230 measures the rotational displacement of the upper plate supported by the piers, and the vertical reflective surface 230b detects the deflection of the piers.
더하여, 상기 수광기(230)가 지지되는 지지판(210)은 반사면(230b)에 반사되는 변위측정기(300)의 레이저광이 항상 수직방향으로 입사되도록 변위측정기(300)와 수광기(230)가 그리는 원호와 일치되는 호형상으로 형성된다.In addition, the support plate 210 on which the light receiver 230 is supported may have the displacement meter 300 and the light receiver 230 such that the laser light of the displacement meter 300 reflected on the reflective surface 230b is always incident in the vertical direction. Is formed in the shape of an arc coinciding with the arc.
상기 변위측정기(300)에서 광원을 방출하여 수평방향 변위를 측정한후 상기 구동수단(400)에 의해 일정량 만큼만 회전시켜(즉 상기 수평방향 반사면일측에 설치되는 수직방향반사면 사이의 거리) 수직방향의 변형을 측정한다.After measuring the horizontal displacement by emitting a light source from the displacement measuring unit 300 by rotating only by a predetermined amount by the driving means 400 (that is, the distance between the vertical reflective surface installed on one side of the horizontal reflective surface) vertical Measure the deformation of the direction.
또한, 상기 구동수단(400)은, 일측에 엔코더(440a)가 부착되어 정확한 회전이 가능토록 된다.In addition, the drive means 400, the encoder 440a is attached to one side to enable accurate rotation.
그리고, 상기 수광부(230)는, 레이저광을 반사시키는 반사면(230b)과 광원을 흡수하는 흡수면(230a)으로 구성되어 상판이 일정변형량 이상으로 변형되어 광원이 흡수면을 향하여 방출되면 변위측정기(300)에 연결되는 제어부(500)가 위험상태를 곧바로 감지토록 된다.The light receiving unit 230 includes a reflecting surface 230b for reflecting a laser light and an absorbing surface 230a for absorbing a light source. When the top plate is deformed to a predetermined amount or more and the light source is emitted toward the absorbing surface, the displacement measuring device is used. The control unit 500 connected to the 300 is to detect the dangerous state immediately.
더하여, 상기 반사면(230b)에는 기준점(210a)이 설치되어 최초의 설치시 레이저를 이용한 변위측정기(300)의 기준을 용이하게 설정하게 된다.In addition, the reference surface 210a is installed on the reflective surface 230b to easily set the reference of the displacement measuring device 300 using a laser at the first installation.
또한, 상기 제어기(500)는, 변위측정기(300)및 엔코더(440a)와 구동모터(440), 수평감지센서(480a)에 연결되어 이를 제어및 구동토록 한다.In addition, the controller 500 is connected to the displacement measuring unit 300 and the encoder 440a, the driving motor 440, and the horizontal detection sensor 480a to control and drive the same.
이때, 상기 수평감지센서(480a)에 의해 수평이 측정되지 않으면 그 이상 또는 이하의 값을 변위측정기(300)에 의해 측정된 값에서 보상하도록 제어부(500)의 마이콤에 프로그램 된다.In this case, if the horizontal is not measured by the horizontal sensor 480a, the microcomputer of the controller 500 is programmed to compensate for the value greater than or equal to the value measured by the displacement measuring device 300.
그리고, 상기 제어부(500)는, 외부의 전원이나 자체의 직류전원에 의해 동작하도록 설치되고, 유무선을 통하여 외부의 제어판넬에 경보신호나 감지된 변형량 데이터를 전달하도록 하는 것이다.In addition, the control unit 500 is installed to operate by an external power source or its own DC power source, and transmits an alarm signal or sensed deformation amount data to an external control panel through a wired or wireless connection.
이상과 같이 본 발명에 의하면, 교량 상판의 변형상태를 간편하고 정확하게 측정할 수 있어 교량의 점검을 효율적으로 할 수 있는 것이다. As mentioned above, according to this invention, the deformation | transformation state of a bridge top board can be measured simply and accurately, and a bridge can be checked efficiently.
또한, 점검자가 일일이 교각에 내려가는 일 없이 원거리에서 점검이 가능하므로 적은 인력으로 짧은 시간에 점검을 할 수 있고 필요한 경우에 수시로 전체의 교량상태를 파악할 수 있으므로 안전사고를 예방할 수 있는 효과가 있다.In addition, since the inspector can inspect at a long distance without going down to the pier one by one, the inspector can check in a short time with little manpower, and if necessary, can check the entire bridge condition from time to time, thereby preventing safety accidents.
본 발명은 특정한 실시예에 관련하여 도시하고 설명 하였지만, 이하의 특허청구범위에 의해 제공되는 본 발명의 정신이나 분야를 벗어나지 않는 한도내에서 본 발명이 다양하게 개량 및 변화될수 있다는 것을 당업계에서 통상의 지식을 가진자는 용이하게 알수 있음을 밝혀 두고자 한다.While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.
도1a,b는 종래의 레이저 장치를 이용한 도로 구조물의 안전진단영 점검시스템을 도시한 사시도및 요부 사시도.Figure 1a, b is a perspective view and a main perspective view showing a safety diagnosis inspection system of the road structure using a conventional laser device.
도2는 본 발명에 따른 교량 안전진단장치를 도시한 사시도Figure 2 is a perspective view showing a bridge safety diagnostic apparatus according to the present invention
도3은 본 발명에 따른 교량 안전진단장치의 레이저측정기를 결합상태도Figure 3 is a combined state laser measuring device of the bridge safety diagnostic apparatus according to the present invention
도4는 본 발명에 따른 교량 안전진단장치의 레이저측정기를 도시한 단면도Figure 4 is a cross-sectional view showing a laser measuring device of the bridge safety diagnostic apparatus according to the present invention
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
100...교각 120...상판100 ... pier 120 ... top
140...완충연결부재 210...지지판140 ... buffer member 210 ... support plate
230...수광기 300...변위측정기230 ... receiver 300 ... displacement meter
440...구동모터 460...연결블록440 ... drive motor 460 ... connection block
500...제어부500 ... control unit
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100672840B1 (en) * | 2004-05-12 | 2007-01-24 | 이근호 | System and method for measuring displacement of structure |
| KR100696567B1 (en) * | 2006-09-14 | 2007-03-19 | 주식회사 하이콘엔지니어링 | Safe diagnosis apparatus of the bridge railing which uses the laser |
| KR100762180B1 (en) * | 2007-04-04 | 2007-10-01 | 케이에스엠기술 주식회사 | Measurement member of girder for bridge |
| KR100804683B1 (en) * | 2007-08-22 | 2008-02-18 | 주식회사 동우기술단 | Bridge safty system |
| CN109520686A (en) * | 2018-12-07 | 2019-03-26 | 张荣楠 | Bridge plate amount of deflection dynamic auto monitoring system and method in real time |
| CN109883388A (en) * | 2019-03-21 | 2019-06-14 | 陈朝忠 | Road and bridge sedimentation and deformation real-time early warning monitors system and its monitoring method |
| CN116952152A (en) * | 2023-08-11 | 2023-10-27 | 湖北辉创重型工程有限公司 | Steel beam deformation detection device |
| CN116952152B (en) * | 2023-08-11 | 2024-05-31 | 湖北辉创重型工程有限公司 | Steel beam deformation detection device |
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| KR100942060B1 (en) | 2008-11-05 | 2010-02-11 | 주식회사 한일엔지니어링 | A bridge device abutment for bridge expansion and contraction abnormal noise department |
| KR101743598B1 (en) | 2017-01-12 | 2017-06-21 | 주식회사 건설방재기술연구원 | Bridge structure deflection safety diagnosis system using multiple laser beams and geosynthetic information |
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| JPH07111346B2 (en) * | 1993-06-30 | 1995-11-29 | ティー・アイ・トレーディング有限会社 | Method for detecting displacement of construct and target plate used therefor |
| JPH10239424A (en) * | 1997-02-21 | 1998-09-11 | Nec Corp | Distance measuring target |
| KR100228226B1 (en) * | 1997-12-27 | 1999-12-01 | 신현준 | Laser scanning device for 3-d shape detection |
| KR20000018508A (en) * | 1998-09-02 | 2000-04-06 | 박정근 | Laser distance measuring device |
| KR100383027B1 (en) * | 2000-03-06 | 2003-05-09 | 한국표준과학연구원 | Method and apparatus for measuring 3 dimensional behavior using laser |
| KR200265796Y1 (en) * | 2001-10-31 | 2002-02-25 | 주식회사 도화종합기술공사 | A system using a laser device for inspecting a safety of a road structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100672840B1 (en) * | 2004-05-12 | 2007-01-24 | 이근호 | System and method for measuring displacement of structure |
| KR100696567B1 (en) * | 2006-09-14 | 2007-03-19 | 주식회사 하이콘엔지니어링 | Safe diagnosis apparatus of the bridge railing which uses the laser |
| KR100762180B1 (en) * | 2007-04-04 | 2007-10-01 | 케이에스엠기술 주식회사 | Measurement member of girder for bridge |
| KR100804683B1 (en) * | 2007-08-22 | 2008-02-18 | 주식회사 동우기술단 | Bridge safty system |
| CN109520686A (en) * | 2018-12-07 | 2019-03-26 | 张荣楠 | Bridge plate amount of deflection dynamic auto monitoring system and method in real time |
| CN109883388A (en) * | 2019-03-21 | 2019-06-14 | 陈朝忠 | Road and bridge sedimentation and deformation real-time early warning monitors system and its monitoring method |
| CN109883388B (en) * | 2019-03-21 | 2021-03-02 | 华思（广州）测控科技有限公司 | Real-time early warning and monitoring system and monitoring method for settlement deformation of road and bridge |
| CN116952152A (en) * | 2023-08-11 | 2023-10-27 | 湖北辉创重型工程有限公司 | Steel beam deformation detection device |
| CN116952152B (en) * | 2023-08-11 | 2024-05-31 | 湖北辉创重型工程有限公司 | Steel beam deformation detection device |
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