Self-repairing system and method for optical fibre distribution type sensor network

Abstract

The invention discloses a self-repairing system and a self-repairing method for an optical fiber distributed sensor network. The system consists of a plurality of optical fiber grating sensors, a self-repairing controller, an optical fiber grating demodulator and a PC. The method is to arrange the self-repairing controller inside an optical fiber network, judge local failure of the optical fiber network after damage by a granularity calculation method, and perform recombination repair on a failed local network by a graph theory method so as to guarantee that the optical fiber network can be operated normally when partial optical fibers fail locally. When an optical fiber sensing system is damaged and partially fails, the self-repairing system and the self-repairing method can automatically recombine the network and repair the functions of the network, make an intelligent material structure capable of realizing self-repairing, and improve the reliability of the optical fiber intelligent structure in engineering application.

Description

technical field [0001] The invention relates to an optical fiber distributed sensor network self-repair system and a self-repair method, belonging to the field of intelligent material structures. Background technique [0002] The basic concept of intelligent material structure is to integrate sensing elements, action elements and control systems into the base material, so that the structure not only has the ability to bear loads, but also has bionic functions such as identification, analysis, processing, and control, even if the structure itself has Capabilities of self-diagnosis, self-adaptation, self-reorganization and self-repair. [0003] The optical fiber sensing system has unique advantages such as light weight, thin diameter, small volume, and corrosion resistance, and is very suitable for making self-diagnosis networks of smart material structures. The optical fiber sensing system has the unique advantage of perfect integration of sensing and sensing. Many sensing p...

AI Technical Summary

Problems solved by technology

However, generally strengthening the protection of the optical fiber will increase the diameter of the optical fiber, which will inevitably affect the performance of the original structure

And even if the protection of the optical fiber is strengthened, it is difficult to completely avoid the damage of the optical fiber

At the same time, the branch combination structure of the optical fiber system will greatly increase the cost and complexity of the system

In addition, if a branch is damaged, the system in the area covered by the branch will fail, affecting the normal operation of the structural system.

Images