KR20010086762A - Automatic measuring and assessment system for bridge diagnostics - Google Patents

Automatic measuring and assessment system for bridge diagnostics Download PDF

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Publication number
KR20010086762A
KR20010086762A KR1020000010620A KR20000010620A KR20010086762A KR 20010086762 A KR20010086762 A KR 20010086762A KR 1020000010620 A KR1020000010620 A KR 1020000010620A KR 20000010620 A KR20000010620 A KR 20000010620A KR 20010086762 A KR20010086762 A KR 20010086762A
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South Korea
Prior art keywords
bridge
sensors
meter
operation center
transmission device
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KR1020000010620A
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Korean (ko)
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KR100366397B1 (en
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김성곤
박민석
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정숭렬
한국도로공사
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Priority to KR10-2000-0010620A priority Critical patent/KR100366397B1/en
Priority to KR2020000005926U priority patent/KR200191455Y1/en
Publication of KR20010086762A publication Critical patent/KR20010086762A/en
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Publication of KR100366397B1 publication Critical patent/KR100366397B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PURPOSE: An automatic system for examining state of a bridge is provided to decide the state of the bridge through attaching a sensor on the bridge while connecting the sensor to a central operation center at a remote location. CONSTITUTION: Measured signals by a static transformation meter(1), a stress meter(2), a displacement meter(3), a clinometer(4), and positional displacement meter(5) on a bridge(16) are transferred to an optical transferring apparatus(12) through a switch box(9) or a static data logger(10). Measured signals by an acceleration meter(6) and an active transformation meter(7), and a wind direction and speed meter(8) are adjusted by signal adjusters(15) for being transferred to the optical transferring apparatus through a dynamic data logger(11). The signals are transferred to an optical transferring apparatus(13) of a central operation center(17) through an optical cable. Then, the signals are transferred to a monitoring computer(14). Thus, the computer analyzes the signals from the sensors for checking state of the bridge. The computer forms a database for examining the bridge by using an analyzed result while displaying the result on a monitor.

Description

교량 상태진단을 위한 자동 계측시스템{Automatic measuring and assessment system for bridge diagnostics}Automatic measuring and assessment system for bridge diagnostics

본 발명은 교량 상태진단을 위한 자동 계측시스템에 관한 것으로서, 더욱 상세하게는 사회 주요 기간 시설물의 하나인 교량의 과학적 유지관리의 수단으로 교량에 필요한 센서를 부착하고 이를 원격지 통제실에 연결하여 교량의 거동을 자동 감지하여 이상유무를 판단할 수 있도록 하는 교량 상태진단을 위한 자동 계측시스템에 관한 것이다.The present invention relates to an automatic measurement system for diagnosing a bridge condition, and more particularly, to attach a sensor required for the bridge as a means of scientific maintenance of the bridge, which is one of the main infrastructure facilities, and to connect the sensor to a remote control room to operate the bridge. The present invention relates to an automatic measuring system for diagnosing a bridge state that can automatically detect an abnormality.

종래의 기술에 있어서는 도1에서와 같이 정적 변형율계(101)와 무응력계(102), 변위차계(103), 경사계(104), 지점 변위계(105), 가속도계(106) 등의 센서를 교량에 설치하고 이를 쉴드 케이블(shield cable)로 스위치 박스(107:switch box) 또는 멀티플렉스(Multiplexer)와 스테이틱 데이터 로거(108:static data logger) 혹은 다이나믹 앰프(109:dynamic Amp)를 이용하여 교량(112) 근처에 있는 현장 계측실(113)로 연결하여 각종 측정신호를 전달하고 이를 현장 계측실에 있는 모니터링 컴퓨터(110,111)에 저장한다. 이후 일정한 주기로 사람에 의해 저장된 데이터를 수집하여 원격지 통제실에서 데이터를 분석하는 방식을 취하고 있다.In the prior art, as shown in FIG. 1, sensors such as the static strain gauge 101, the stress-free gauge 102, the displacement difference meter 103, the inclinometer 104, the point displacement meter 105, the accelerometer 106, and the like are bridged. And use a shield cable to connect the bridge using a switch box or multiplexer and a static data logger or a dynamic amplifier. Connection to the field measuring room 113 near the 112 transmits various measurement signals and stores them in the monitoring computers 110 and 111 in the field measuring room. Since then, data collected by humans are collected at regular intervals, and data is analyzed in a remote control room.

위와 같은 방식은 실험실에서의 계측방법을 그대로 현장에 확장시킨 것으로 케이블의 길이가 길어짐에 따라 잡음(noise)의 간섭이 심해지고 실시간 계측성능을 확보할 수 없으며, 현장에 컴퓨터를 배치함으로써 오는 셧다운(shut down) 문제 등 유지관리가 어렵다는 문제점이 있다.The above method extends the measurement method in the laboratory as it is. As the length of the cable increases, noise interference increases and real-time measurement performance cannot be secured. There is a problem that maintenance is difficult, such as a shut down problem.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 사회 주요 기간 시설물의 하나인 교량의 과학적 유지관리의 수단으로 교량에 필요한 센서를 부착하고 이를 원격지 중앙운영센터에 연결하여 교량의 거동을 자동 감지하여 이상유무를 판단할 수 있도록 하는 교량 상태진단을 위한 자동 계측시스템을 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, by attaching the sensor necessary for the bridge as a means of scientific maintenance of the bridge, which is one of the main infrastructure facilities of the bridge and connected to the remote central operation center to automatically operate the bridge The purpose of the present invention is to provide an automatic measuring system for diagnosing bridge condition that can detect and determine the abnormality.

도 1 은 종래의 교량 상태진단을 위한 계측시스템을 보인 구성도이다.1 is a block diagram showing a measurement system for a conventional bridge state diagnosis.

도 2 는 본 발명에 따른 교량의 상태진단을 위한 자동 계측시스템을 보인 구성도이다.2 is a block diagram showing an automatic measurement system for the state diagnosis of the bridge according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1,101 : 정적 변형율계 2,102 : 무응력계1,101: static strain meter 2,102: stress-free

3,103 : 변위차계 4,104 : 경사계3,103: displacement difference meter 4,104: inclinometer

5,105 : 지점 변위계 6,106 : 가속도계5,105: point displacement meter 6,106: accelerometer

7 : 동적 변형율계 8 : 풍향 풍속계7: dynamic strain meter 8: wind direction anemometer

9,107 : 스위치 박스 또는 멀티플렉스9,107: switch box or multiplex

10,108 : 스테이틱 데이터 로거10,108: Static Data Logger

11 : 다이나믹 데이터 로거 12,13 : 광 전송장치11: dynamic data logger 12, 13: optical transmission device

109 : 다이나믹 앰프 14,110 : 모니터링 컴퓨터109: dynamic amplifier 14110: monitoring computer

111 : 다이나믹 데이터 로거 겸용 모니터링 컴퓨터111: dynamic data logger combined monitoring computer

15 : 신호 조절기 16,112 : 교량15: signal regulator 16,112: bridge

17 : 중앙운영센터 113 : 현장계측실17: central operation center 113: field measurement room

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 교량 상태진단을 위한 자동 계측시스템은, 정적 변형율계와 무응력계, 변위차계, 경사계, 지점 변위계 등의 각 정적 센서들이 스위치 박스 또는 멀티플렉스와 스테이틱 데이터 로거를 통해 광 전송장치에 연결되고, 가속도계와 동적 변형율계, 풍향풍속계 등의 각 센서들이 다이나믹 데이터 로거를 통해 상기 광 전송장치에 연결되어, 상기 각 센서들에 의해 측정되는 측정신호를 실시간으로 전송할 수 있도록 상기 교량의 광 전송장치와 중앙운영센터간의 광 전송장치가 전용 광 케이블로 연결되어, 상기 교량에 설치된 다수개의 센서들의 측정신호를 교량의 거동을 분석하는 중앙운영센터의 모니터링 컴퓨터에 제공되도록 연결하는 것을 특징으로 한다.In order to achieve the object as described above, the automatic measurement system for diagnosing a bridge state according to the present invention is characterized in that each static sensor such as a static strain meter, a stress-free meter, a displacement differential meter, an inclinometer, a point displacement meter, Sensors such as accelerometers, dynamic strain gauges, wind vanes, etc. are connected to the optical transmitters via static data loggers, and are connected to the optical transmitters through dynamic data loggers to measure the measured signals measured by the respective sensors. The optical transmission device between the optical transmission device of the bridge and the central operation center is connected with a dedicated optical cable so as to transmit in real time, and the monitoring computer of the central operation center analyzes the behavior of the bridge by measuring signals of a plurality of sensors installed in the bridge. It characterized in that the connection to be provided to.

상기 다수개의 다이나믹 센서들의 후단에는 상기 센서들의 측정신호를 전송시 잡음의 영향을 줄이기 위해 신호 조절기가 각각 설치되는 것이 적절하다.The rear end of the plurality of dynamic sensors is appropriately provided with a signal controller to reduce the effect of noise when transmitting the measurement signal of the sensors.

또한, 본 발명은 상기 모니터링 컴퓨터를 네트워크에 접속하여, 네트워크 상에서 각 교량의 거동을 원거리에서 모니터링할 수 있는 다수개의 사용자 단말기를 접속하여 각 내·외부기관 등에서 교량의 거동상태를 확인할 수 있다.In addition, the present invention can connect the monitoring computer to the network, by connecting a plurality of user terminals that can remotely monitor the behavior of each bridge on the network to check the behavior of the bridge in each internal and external organization.

이하, 본 발명의 바람직한 실 예를 예시도면과 함께 보다 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

본 발명은 도2에 도시한 것처럼, 교량에 설치된 정적 변형율계(1)와 무응력계(2), 변위차계(3), 경사계(4), 지점 변위계(5) 등의 각 정적 센서들이 실드 케이블(shield cable)에 의해 스위치 박스(9) 또는 멀티플렉스에 접속 된 후 스테이틱 데이터 로거(10)로 연결된 후 통신망에 의해 스테이틱 데이터 로거(10)에서 광 전송장치로 테이터를 전송하게 되어있다. 또한, 교량에 설치된 가속도계(6)와 동적 변형율계(7), 풍향풍속계(8) 등의 각 동적 센서들이 신호 조절기(15)에 접속된 후 실드 케이블(shield cable)에 의해 다이나믹 데이터 로거(11)에 연결되어 있고, 다이나믹 데이터 로거(11) 역시 통신인터페이스에 의해 광 전송장치(12)로 데이터를 전송하게 되어 있다.According to the present invention, as shown in FIG. 2, static sensors such as a static strain gauge 1, a stress-free meter 2, a displacement difference meter 3, an inclinometer 4, and a point displacement meter 5 installed in a bridge are shielded. It is connected to the switch box 9 or multiplex by a shield cable, and then connected to the static data logger 10, and then the data is transmitted from the static data logger 10 to the optical transmission device by a communication network. . In addition, each dynamic sensor such as the accelerometer 6, the dynamic strain meter 7, the wind vane 8, and the like installed on the bridge is connected to the signal regulator 15, and then the dynamic data logger 11 is connected by a shield cable. ), And the dynamic data logger 11 also transmits data to the optical transmission device 12 by a communication interface.

여기서, 스위치 박스(9) 또는 멀티플렉스와 스테이틱 데이터 로거(10) 및 다이나믹 데이터 로거(11)를 교량에 설치된 각 센서들에 근접되게 설치하거나 필요시신호조절기를 센서 바로 곁에 부착함으로써 측정신호를 전송하는 중에 신호 대 잡음비를 최대화하여 잡음의 영향을 크게 줄일 수 있을 것이다.Here, a switch box 9 or multiplex and static data logger 10 and dynamic data logger 11 are installed in close proximity to each sensor installed in the bridge or, if necessary, by attaching a signal controller directly to the sensor, By maximizing the signal-to-noise ratio during transmission, the effect of noise will be greatly reduced.

교량에 설치된 광 전송장치(12)와 중앙운영센터의 광 전송장치(13)를 전용 광 케이블로 연결하여 교량(16)에 설치된 각 센서들에 의해 측정되는 측정신호를 실시간으로 중앙운영센터(17)의 모니터링 컴퓨터(14)에 전송할 수 있도록 되어 있다.The optical transmission device 12 installed on the bridge and the optical transmission device 13 of the central operation center are connected by a dedicated optical cable to measure the measurement signals measured by the sensors installed on the bridge 16 in real time. Can be transmitted to the monitoring computer 14 of (

그리고, 광 전송장치(13)에 전송된 다수개의 센서들의 측정신호가 통신망을 통하여 중앙운영센터 내의 모니터링 컴퓨터(14)에 전송되도록 연결되어 있어, 모니터링 컴퓨터(14)는 다수개의 센서들의 측정신호를 분석하여 교량의 거동을 분석할 수 있다.In addition, since the measurement signals of the plurality of sensors transmitted to the optical transmission device 13 are connected to be transmitted to the monitoring computer 14 in the central operation center through the communication network, the monitoring computer 14 receives the measurement signals of the plurality of sensors. Analyze the behavior of the bridge.

또한, 중앙운영센터의 모니터링 컴퓨터(14)가 네트워크에 접속되어 네트워크 상에서 각 교량의 거동을 모니터링 할 수 있는 다수개의 사용자 단말기가 접속되어 있어, 중앙운영센터(17) 뿐만 아니라 각 내·외부기관에서도 교량의 거동상태를 원격으로 확인할 수 있다.In addition, the monitoring computer 14 of the central operation center is connected to the network, and a plurality of user terminals that can monitor the behavior of each bridge on the network are connected to each other. The behavior of the bridge can be checked remotely.

이와 같이 구성된 본 발명은 다음과 같이 동작된다.The present invention configured as described above operates as follows.

교량에 설치된 정적 변형율계(1)와 무응력계(2), 변위차계(3), 경사계(4), 지점 변위계(5) 등에 의해 계측되는 교량의 변형율, 무응력, 변위차, 경사, 지점 변위 등의 측정신호가 스위치 박스(9) 또는 멀티플렉스와 스테이틱 데이터 로거(10)를 통해 광 전송장치(12)에 전송된다. 또한, 교량(16)에 설치된 가속도계(6)와 동적 변형율계(7) 및 풍향풍속계(8) 등에 의해 계측되는 가속도, 변형율, 풍향풍속 등의 측정신호가 신호 조절기(15)에 의해 적정레벨로 증폭 조절된 후 다이나믹 데이터 로거(11)를 통해 광 전송장치(12)에 전송된다.Strain, no stress, displacement difference, slope, and point of the bridge measured by the static strain gauge (1), the stress-free gauge (2), the displacement gauge (3), the inclinometer (4), the point displacement gauge (5), etc. installed in the bridge. Measurement signals such as displacements are transmitted to the optical transmission device 12 via the switch box 9 or the multiplex and the static data logger 10. In addition, measurement signals such as acceleration, strain, wind direction, and the like measured by the accelerometer 6, the dynamic strain meter 7, and the wind vane 8, etc., installed on the bridge 16, are brought to an appropriate level by the signal controller 15. After the amplification is adjusted, it is transmitted to the optical transmission device 12 through the dynamic data logger 11.

이렇게 광 전송장치(12)에 전송된 각 센서들의 측정신호는 전용 광 케이블을 통해 원거리에 있는 중앙운영센터(17)의 광 전송장치(13)까지 실시간으로 전송되고, 이는 다시 중앙운영센터(17)의 모니터링 컴퓨터(14)에 전송된다. 이에 따라 모니터링 컴퓨터(14)는 교량에 설치된 다수개의 센서들로부터 전송되는 측정신호를 분석하여 교량의 거동상태를 확인한다. 그리고, 모니터링 컴퓨터(14)는 분석결과를 이용하여 교량을 점검하기 위한 데이터 베이스를 구축하는 한편 사용자의 요구에 따라 모니터에 디스플레이한다.The measurement signal of each sensor transmitted to the optical transmission device 12 is transmitted in real time to the optical transmission device 13 of the central operation center 17 at a long distance through a dedicated optical cable, which in turn is the central operation center 17 Is sent to the monitoring computer 14. Accordingly, the monitoring computer 14 analyzes the measurement signals transmitted from the plurality of sensors installed in the bridge to check the behavior of the bridge. Then, the monitoring computer 14 constructs a database for inspecting the bridge using the analysis result and displays it on the monitor according to the user's request.

또한, 모니터링 컴퓨터(14)가 네트워크에 연결되어 네트워크 상에서 다수개의 사용자 단말기가 접속되어 있어, 중앙운영센터(17) 뿐만 아니라 각 내·외부기관에서도 교량의 거동상태를 원격으로 확인할 수 있다.In addition, since the monitoring computer 14 is connected to the network and a plurality of user terminals are connected on the network, not only the central operation center 17 but also the internal and external organizations can remotely check the behavior of the bridge.

본 발명에 의하면, 중앙운영센터는 교량에 설치된 각 센서들에 의해 교량으로부터 계측되는 변형율과 무응력, 변위차, 경사, 지점 변위, 가속도, 변형율, 풍량풍속 등을 실시간으로 전송받아 교량의 거동을 분석할 수 있으며, 각 센서에 의해 측정되어 중앙운영센터로 전송되는 측정신호의 신호 대 잡음비가 최대화되어 유입되는 잡음의 영향을 최소화하는 것과 계측용 장비와 모니터링 컴퓨터의 안정된 운용을 할 수 있도록 하는데 유용한 것이다.According to the present invention, the central operation center receives the strain and non-stress, displacement difference, inclination, point displacement, acceleration, strain rate, wind speed, etc. measured from the bridge by the sensors installed in the bridge in real time to control the behavior of the bridge. The signal-to-noise ratio of the measured signal measured by each sensor and transmitted to the central operation center is maximized to minimize the influence of incoming noise and to ensure stable operation of the measuring equipment and monitoring computer. will be.

이상에서 본 발명은 기재된 구체적인 예에 대해서만 상세히 설명되었지만 본 발명의 기술 사상 범위내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.Although the present invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the present invention, and such modifications and modifications belong to the appended claims.

Claims (3)

정적 변형율계와 무응력계, 변위차계, 경사계, 지점 변위계 등의 각 정적 센서들이 스위치 박스 또는 멀티플렉스와 스테이틱 데이터 로거를 통해 광 전송장치에 연결되고, 가속도계와 동적 변형율계, 풍향풍속계 등의 각 동적 센서들이 다이나믹 데이터 로거에 연결된 후 상기 광 전송장치에 연결되고;Static sensors, such as static strain gauges, stress-free meters, displacement meters, inclinometers, and point displacement meters, are connected to the optical transmission device via switch boxes or multiplexes and static data loggers, such as accelerometers, dynamic strain meters, and wind vanes. Respective dynamic sensors are connected to the optical transmission device after being connected to the dynamic data logger; 상기 각 센서들에 의해 계측되는 측정신호를 실시간으로 전송할 수 있도록 상기 교량의 광 전송장치와 원격지 중앙운영센터의 광 전송장치가 전용 광 케이블로 연결되며;The optical transmission device of the bridge and the optical transmission device of a remote central operation center are connected with a dedicated optical cable so as to transmit the measurement signal measured by each of the sensors in real time; 상기 교량에 설치된 다수개의 센서들의 측정신호가 교량의 거동을 분석하는 원격지 중앙운영센터의 모니터링 컴퓨터에 제공되도록 상기 원격지 중앙운영센터의 광 전송장치가 상기 원격지 중앙운영센터의 모니터링 컴퓨터에 연결되는 것을 특징으로 하는 교량 상태진단을 위한 자동 계측시스템.The optical transmission device of the remote central operation center is connected to the monitoring computer of the remote central operation center so that the measurement signals of a plurality of sensors installed in the bridge are provided to the monitoring computer of the remote central operation center for analyzing the behavior of the bridge. Automatic measurement system for bridge condition diagnosis. 제1항에 있어서,The method of claim 1, 상기 다수개의 다이나믹 센서들의 후단에는 상기 센서들의 측정신호를 전송에 적합한 신호로 증폭 조절하기 위한 신호 조절기가 각각 설치되는 것을 특징으로 하는 교량 상태진단을 위한 자동 계측시스템.And a signal controller for amplifying and controlling a measurement signal of the sensors into a signal suitable for transmission at a rear end of the plurality of dynamic sensors. 제1항에 있어서,The method of claim 1, 상기 모니터링 컴퓨터에는 네트워크에 접속되어 네트워크 상에서 각 교량의 거동을 모니터링할 수 있는 다수개의 사용자 단말기가 접속되는 것을 특징으로 하는 교량 상태진단을 위한 자동 계측시스템.The monitoring computer is connected to the network is connected to a plurality of user terminals capable of monitoring the behavior of each bridge on the network is an automatic measurement system for the bridge status diagnostics.
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KR20000063832A (en) * 2000-08-05 2000-11-06 이선표 Process method of increasing monitoring reliability of sensor output for internet based monitoring system
KR100699029B1 (en) * 2003-06-10 2007-03-23 박세현 Web server embedded data logger system
KR100959543B1 (en) * 2008-08-10 2010-05-27 주식회사 서부에너지기술 Method and system for safely managing structure
KR101522194B1 (en) * 2015-03-26 2015-05-28 한국시설기술단(주) Upper structure displacement measurement system of bridge
WO2018143572A3 (en) * 2017-02-02 2018-10-04 주식회사 케이티 Facility measurement system and method using optical communication, and earthquake early warning method using same

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KR100376100B1 (en) * 2000-07-24 2003-03-15 주식회사 탑시스템 Remote sensing system of structure
KR100794674B1 (en) * 2007-03-23 2008-01-14 (주)다인건설 Beam reinforcement apparatus of a digital type for bridge
KR100853100B1 (en) * 2008-04-29 2008-08-19 하나솔루션(주) Remote monitoring system for catenary and tensioning device
KR20240044201A (en) 2022-09-28 2024-04-04 중앙대학교 산학협력단 Automated Load Detection Method and system using IoT sensor for Evaluating Load Carry Capacity of Bridge

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Publication number Priority date Publication date Assignee Title
KR20000063832A (en) * 2000-08-05 2000-11-06 이선표 Process method of increasing monitoring reliability of sensor output for internet based monitoring system
KR100699029B1 (en) * 2003-06-10 2007-03-23 박세현 Web server embedded data logger system
KR100959543B1 (en) * 2008-08-10 2010-05-27 주식회사 서부에너지기술 Method and system for safely managing structure
KR101522194B1 (en) * 2015-03-26 2015-05-28 한국시설기술단(주) Upper structure displacement measurement system of bridge
WO2018143572A3 (en) * 2017-02-02 2018-10-04 주식회사 케이티 Facility measurement system and method using optical communication, and earthquake early warning method using same

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