Monitoring device and real-time monitoring method for bridge vibration deformation

A monitoring device, real-time monitoring technology, applied in measuring devices, using optical devices, measuring ultrasonic/sonic/infrasonic waves, etc., to achieve accurate and safe measurement and optimal design effects

Active Publication Date: 2008-12-03
XI AN JIAOTONG UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned deficiencies in the existing bridge vibration d

Method used

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  • Monitoring device and real-time monitoring method for bridge vibration deformation

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0018] refer to figure 1 Firstly, the outgoing beam 2 is formed by the laser transmitter 1 and passed through the beam expanding and collimating optical system to irradiate the reflective and transmissive prism 3 of the first set of synchronous light receiving and transmitting device 9, and then the reflected beam 7 passing through the prism in a certain proportion, It is irradiated on the imaging screen 4 (the imaging screen can be a piece of frosted glass) to form a uniform light spot, which is imaged on the photoelectric conversion and data memory 6 through the optical amplifier 5, and the photoelectric conversion and data memory set the light spot data collected initially as a reference When the bridge deforms, the light spot will move on the frosted glass. At this time, the photoelectric conversion and data memory 6 will compare the colle...

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Abstract

The invention discloses a monitoring device and a real-time monitoring method for bridge vibration and deformation. The device comprises a laser emitter, synchronous light receiving and transmitting devices on a plurality of monitoring points, a centralized control and communication device, a remote monitoring center, etc. When a beam emitted by the laser emitter irradiates a reflection and transmission prism of the synchronous light receiving and transmitting device, the beam is split in proportion; a part of the split beam is reflected and received; the other part of the split beam is transmitted and passed, and irradiates a reflection and transmission prism of the next synchronous light receiving and transmitting device; and each synchronous light receiving and transmitting device can collect and store deformation (spot displacement) of a monitoring point, and upload the data of the deformation. The monitoring system can synchronously collect and process data on the deformation of all monitoring points, thereby realizing the measurement for vibration and deformation of a whole bridge. The monitoring device and the monitoring method can be used for measuring the deformation and the low-frequency vibration of various large-scaled bridge buildings. Furthermore, the device and the method have the advantages of rapid and real-time measurement, high accuracy of measurement, and real-time monitoring.

Description

technical field [0001] The invention relates to a measuring device and a measuring method, in particular to a monitoring device and a real-time monitoring method for vibration deformation of a large bridge. Background technique [0002] At present, there are relatively few devices and methods related to real-time vibration and deformation monitoring of bridges in China, and the existing measurement methods are too complicated and the measurement accuracy is not high, or the measurement methods are simple, and the deformation of the bridge cannot be accurately measured. Accurate real-time collection will bring inconvenience to the bridge monitoring personnel to judge the deformation and safety of the bridge. Contents of the invention [0003] The invention aims to solve the above-mentioned deficiencies existing in the existing bridge vibration deformation monitoring method, and improve the safety of the bridge in use. Provided are a high-precision, real-time monitoring dev...

Claims

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Application Information

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IPC IPC(8): G01B11/16G01H9/00
Inventor 乐开端
Owner XI AN JIAOTONG UNIV
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