BP network based pipeline security identifying method for optical fiber pipeline leakage monitoring device

A technology of pipeline leakage and monitoring device, which is applied in neural learning method, biological neural network model, electromagnetic wave transmission system, etc., can solve the problem of low detection sensitivity and achieve the effect of low implementation cost

Inactive Publication Date: 2008-05-21
TIANJIN UNIV
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  • Abstract
  • Description
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Problems solved by technology

This type of method is affected by factors such as the characteristics of the transported material and transporting conditions, and the detection sensitivity is not high

Method used

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  • BP network based pipeline security identifying method for optical fiber pipeline leakage monitoring device
  • BP network based pipeline security identifying method for optical fiber pipeline leakage monitoring device
  • BP network based pipeline security identifying method for optical fiber pipeline leakage monitoring device

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Embodiment Construction

[0049] Taking the two abnormal events of gas pipeline leakage and manual excavation as examples, the present invention will be further described in detail in conjunction with the accompanying drawings and specific implementation methods:

[0050] System voltage signal acquisition:

[0051] A data acquisition card with at least two channels is used to collect two voltage signals of the interferometric distributed optical fiber pipeline leakage monitoring device, that is, the voltage signals output by the two photoelectric converters 12a and 12b in FIG. 1 .

[0052] Then execute the flow of the method shown in FIG. 2 , wherein the wide black frame is the algorithm implemented inside the computer, and the rest is implemented by the actual device. The specific steps of the process in the block diagram are as follows:

[0053] The photoelectric conversion unit converts two interfering optical signals in the interferometric distributed optical fiber pipeline monitoring device into ...

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Abstract

The invention relates to an identification method for the pipeline safety based on BP network and used in a monitoring device for the fiber pipeline leakage, belonging to the pipeline monitoring technique. The method comprises the following steps: the voltage signal is acquired after the photoelectric conversion of two channels of interference light in the monitoring device for the interference typed distributed optical fiber pipeline by utilizing a synchronous data acquisition card with at least double channels; the eigenvector of the detection signal obtained by calculation is decomposed by the wavelet; a plurality of acquisition samples are selected for each intrusive event in order to train and test a BP neural network; after the model training is completed, the system can acquire the real-time testing signal, extract signal characteristics, import into the well trained model for the online identification of the types of the abnormal events occurring along the pipeline and locate the abnormal events. The invention has the advantages of simple and convenient method, small occupied resource of the system, good real-time quality, which can be realized by a plurality of forms.

Description

technical field [0001] The invention relates to a pipeline safety identification method for an optical fiber pipeline leakage monitoring device based on a BP network, which belongs to the pipeline monitoring technology. Background technique [0002] As one of the important ways of oil and gas transportation, pipeline transportation has played an increasingly important role in national economic construction due to its own advantages. Oil and gas pipelines may pass through various environments along the way, and many factors such as surrounding construction, man-made sabotage (such as drilling oil and stealing oil, etc.), and natural disasters (such as earthquakes, floods, mudslides, and landslides, etc.) may affect the safety of pipelines , And lead to pipeline leakage, once an accident occurs, it will cause huge loss of life and property and environmental pollution. [0003] At present, there are many pipeline leakage detection technologies and methods at home and abroad, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/08G08C23/06G06N3/06G06N3/08H04B10/075
Inventor 靳世久曲志刚周琰曾周末封皓
Owner TIANJIN UNIV
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