Optical fiber vibration detection method and system

CN118916821BActive Publication Date: 2025-02-28QINGDAO HUIAN VALLEY TECH DEV CO LTD
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Patent Information

Application Number
CN202411397265.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-02-28
Estimated Expiration
2044-10-09

AI Technical Summary

Technical Problem

Traditional vibration signal processing methods rely only on a single feature and cannot fully reflect the true status of the device, which can easily lead to misjudgment or misjudgment.

Method used

By using the optical fiber vibration detection method, the vibration signal of the optical fiber sensor is obtained and feature extraction is performed, including vibration amplitude, frequency and phase. These features are input into the pre-trained regression model and neural network model, and the vibration intensity and category labels are obtained respectively. Combined with the vibration frequency and sensor position information, the vibration score is calculated. If the score exceeds the threshold, the signal is determined to be abnormal.

Benefits of technology

Through the comprehensive consideration of multi-dimensional characteristics, it is possible to more accurately determine whether the vibration signal is abnormal, reduce misjudgment and misjudgment, and improve the accuracy of equipment status monitoring.

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Abstract

The present application provides a method and system for detecting optical fiber vibration, the method comprising: obtaining a vibration signal from an optical fiber sensor; performing feature extraction on the vibration signal to obtain vibration features, the vibration features including vibration amplitude, vibration frequency and phase; inputting the vibration features into a pre-trained regression model to obtain the vibration intensity of the vibration signal; inputting the vibration features into a pre-trained neural network model to obtain a category label corresponding to the vibration signal; obtaining a vibration score of the vibration signal based on the vibration intensity, the category label, the vibration frequency and the position information of the optical fiber sensor; and determining that the vibration signal is an abnormal vibration signal when the vibration score is greater than a preset score threshold. Using the method provided in the embodiment of the present application, it is possible to accurately determine whether a vibration signal is abnormal through multi-dimensional features.
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Citation Information

Patent Citations

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