Fiber bragg grating sensor intelligent cable for building cable structure

Abstract

The invention provides a fiber bragg grating sensor intelligent cable for a building cable structure. The cable comprises a cable body and a fiber bragg grating sensor, the cable body is composed of aplurality of steel wires, the fiber bragg grating sensor is fixed in the cable body, a packaging structure is arranged outside the fiber bragg grating sensor, and the packaging structure is a fiber composite rib. According to the cable, compared with the prior art, the fiber bragg grating sensor is combined with the building cable, the change of the component part is sensed by a grating, and an optical signal change is transmitted to a fiber bragg grating acquisition instrument through an optical fiber, so that rapid, accurate visual and real-time monitoring on the cable force is realized, and the cable is suitable for long-term monitoring of the building structure.

Description

technical field [0001] The invention relates to a fiber grating sensor wisdom cable used for building cable structures. The architectural cable structure is a tension structure, which needs to be prestressed and stretched to form a stable structural shape. The cable body of the cable structure is always in a state of prestressed tension during construction and use. How to accurately and real-time monitor the change of cable force And the stress status of the cable body? The invention can measure the distribution of the cable force in the cable body in real time and accurately, provide reliable data support for the cable force distribution and internal force changes of the building cable structure, and provide reliable basis for understanding and mastering the health status of the structure. Background technique [0002] At this stage, there are many commonly used methods for monitoring building cable structures, mainly pressure sensor method, oil pressure gauge reading meth...

AI Technical Summary

Problems solved by technology

The magnetic flux method measures the cable force mainly through the ferromagnetic material of the magnetic flux sensor. When the external load changes, the internal magnetic permeability changes, and the cable force is measured by measuring the relationship between the magnetic permeability of the ferromagnetic material component and the cable force. At the same time, it is necessary to add a magnetic flux sensor to the cable body to collect data. This method results in the inability to directly obtain the results of the cable force measurement, and is susceptible to external interference and affects the appearance of the building.

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