Optical fiber distributed sensing monitoring system for bridge

Abstract

The invention relates to an optical fiber distributed sensing monitoring system for a bridge, and aims to solve the technical problems of low efficiency and complexity. The system is characterized in that by adopting a server, a terminal processor in distributed connection with the server and a high-speed data acquisition module connected with the terminal processor, the high-speed data acquisition module is connected with a photoelectric detection module, the photoelectric detection module comprises a plurality of FBG optical fiber sensors and a plurality of BOTDR optical fiber sensors which are connected in parallel, the FBG optical fiber sensors are connected to a first sensing data fusion unit, the BOTDR optical fiber sensors are connected to a second sensing data fusion unit, the FBG optical fiber sensors and the BOTDR optical fiber sensors are both connected to a third sensing data fusion unit, and the first sensing data fusion unit, the second sensing data fusion unit and the third sensing data fusion unit are all connected to a weighting calculation unit. According to the invention, the problem is well solved, and the system can be used for bridge monitoring.

Description

technical field [0001] The invention relates to the field of bridge monitoring, in particular to an optical fiber distributed sensing monitoring system for bridges. Background technique [0002] The basic connotation of bridge health monitoring is to send out early warning signals for bridges under special weather, traffic conditions or abnormally serious bridge operation conditions through the monitoring and evaluation of bridge structural conditions, and provide basis and guidance for bridge maintenance and management decisions . However, bridge structural health monitoring is not only for structural state monitoring and evaluation, but also for the further significance of its information feedback to structural design, which may improve structural design methods and corresponding code standards. Furthermore, bridge health monitoring brings more than just a monitoring system and reflection on a specific bridge design, it may and should become a "field laboratory" for bridg...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem of complex and inconsistent data and low transmission efficiency existing in the prior art when sensors are comprehensively utilized

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