Pipeline micro-leakage characteristic information monitoring method, system, equipment and medium

Abstract

The invention provides a pipeline micro-leakage characteristic information monitoring method, system and device and a medium, and is used for monitoring pipeline micro-leakage based on a sensing optical fiber laid on a pipeline, the sensing optical fiber comprises a plurality of sensing units arranged at intervals, and the method comprises the following steps: obtaining a plurality of time domain characteristic signals of the pipeline based on the plurality of sensing units; judging whether a micro-leakage event occurs in the pipeline based on the plurality of time domain characteristic signals; when a micro-leakage event occurs in the pipeline, determining a micro-leakage time-domain characteristic signal in which the micro-leakage event occurs in the plurality of time-domain characteristic signals; constructing a micro-leakage aperture determination model, and determining the micro-leakage aperture of the micro-leakage event based on the micro-leakage time domain characteristic signal and the micro-leakage aperture determination model; and constructing a micro-leakage position determination model, and determining the micro-leakage position of the micro-leakage event based on the micro-leakage time domain characteristic signal and the micro-leakage position determination model. According to the invention, high-precision and high-accuracy monitoring of the micro-leakage event can be realized.

Description

technical field [0001] The invention relates to the technical field of distributed acoustic wave sensing systems, in particular to a method, system, equipment and medium for monitoring pipeline micro-leakage characteristic information. Background technique [0002] As an important means of energy transportation, pipeline transportation is called "civilized transportation" among the five major transportation industries because of its large transportation volume, low transportation cost, low energy consumption, and easy management. In recent years, with the continuous increase in the scale of pipeline infrastructure, accidents related to pipeline safety, such as pipeline explosions, fractures, leakages, illegal drilling into pipelines and oil theft, have occurred frequently. The leakage will cause the explosion of the pipe body, resulting in serious environmental pollution and economic losses, and will also destroy the integrity of the pipeline. Therefore, an effective pipeli...

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Problems solved by technology

[0005] In view of this, it is necessary to provide a pipeline micro-leakage feature information monitoring method, system, equipment and medium to solve the problem in the prior art that it is difficult to achieve accurate detection and positioning of micro-leakage signals, and the leakage signals in different states Technical problem of lack of classification and discrimination mechanism

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