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Long-distance multi-parameter synchronous detection system for bridge

A synchronous detection, multi-parameter technology, applied in the direction of elasticity test, machine/structural component test, measurement device, etc., can solve the problem that the detection method cannot collect bridge parameters in time, achieve accurate judgment results, improve accuracy, Exclude abnormal effects

Active Publication Date: 2021-06-22
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a long-distance multi-parameter synchronous detection system for bridges to solve the problem that existing detection methods cannot collect bridge parameters in time

Method used

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  • Long-distance multi-parameter synchronous detection system for bridge
  • Long-distance multi-parameter synchronous detection system for bridge
  • Long-distance multi-parameter synchronous detection system for bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Long-distance multi-parameter simultaneous detection system for bridges, such as figure 1 As shown: it includes an analysis module, a modulation module, and an optical fiber sensing module. The analysis module sends the optical signal to the modulation module. The analysis module can use an existing optical fiber decoder. A plurality of frequencies arranged in the second order are modulated into a first detection signal and a second detection signal, and the modulation module sends the first detection signal and the second detection signal to the optical fiber sensing module respectively, and the optical fiber sensing module is along the length of the bridge Direction laying, the optical fiber sensing module is located inside the bridge or on the outer wall of the bridge. The optical fiber sensing module transmits the first detection signal and the second detection signal respectively and simultaneously senses the change information of the bridge. The change information ...

Embodiment 2

[0039] The difference from Embodiment 1 is that the processing module sends abnormal point information to the analyzing module when the optical fiber sensing module is located in the bridge.

[0040] When the optical fiber sensing module is located in the bridge, it is impossible to visually see the corresponding abnormal situation, and the abnormal point information is sent to the analysis module, so as to know the abnormal situation inside the bridge in time.

Embodiment 3

[0042] The difference with Embodiment 1 is that, if figure 2 and image 3 , the reference signs in the figure are: elastic tube 1, cavity 2, metal powder 3, conductive terminal 4, groove 5, friction head 6, friction rod 7, optical fiber sensing module 8, indicator 9, power supply 10.

[0043] It also includes a transition piece located at the bridge joint gap, the transition piece includes an elastic tube 1 sleeved outside the optical fiber sensing module 8, the two ends of the elastic tube 1 are fixedly connected to the bridges at both ends of the joint point gap, and the elastic tube 1 The outer tube wall facing upward is arc-shaped, and the elastic tube 1 is provided with a plurality of cavities 2 on the upward tube wall, the cavities 2 are filled with metal powder 3, and the top wall of the cavity 2 is bonded with friction The friction strip is provided with a groove 5, the inner wall of the groove 5 is arc-shaped, the two ends of the friction strip are bonded with condu...

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Abstract

The invention relates to the field of structural component elasticity testing, in particular to a long-distance multi-parameter synchronous detection system for a bridge. The system comprises an analysis module, a modulation module and an optical fiber sensing module, wherein the analysis module sends optical signals to the modulation module, the modulation module modulates the optical signals into detection signals according to frequencies arranged in different sequences, the modulation module sends the detection signals to the optical fiber sensing module, the optical fiber sensing module transmits the detection signals and synchronously senses change information of the bridge, the change information comprises vibration change, temperature change and stress change, and the optical fiber sensing module sends echo signals obtained after the detection signals are reflected to the analysis module; the analysis module receives the echo signals for analysis; and the analysis module analyzes the stress value, the vibration intensity and the temperature value of the bridge from the echo signals, and stores and displays the values. According to the invention, the timeliness of detecting parameter changes at different positions of the bridge can be improved, the contrast of multiple pieces of data is higher, and the reference of the data is improved.

Description

technical field [0001] The invention relates to the field of testing the elasticity of structural components, in particular to a long-distance multi-parameter synchronous detection system for bridges. Background technique [0002] In order to adapt to the modern high-speed development of the transportation industry, bridges have become important buildings erected to cross mountain streams, unfavorable geology or meet other transportation needs to make traffic more convenient. Each technical parameter is detected to judge or predict the service condition of the bridge according to the technical parameter. [0003] At present, for the detection of technical parameters of bridges, the key parts are usually tested regularly, which is cumbersome to operate and the data is unreliable. In view of the current problems, the patent with publication number CN104198144A discloses a small and medium-sized bridge based on long-gauge optical fiber strain sensors The rapid detection method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00
CPCG01M5/0008G01M5/005Y02A30/30
Inventor 梁帅孙维王璇孙中光张建鑫戴书球钟宇李勇张宇谭一川韩麟之
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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