Pipeline leakage monitoring method and system based on optical fiber sensing

Abstract

A pipeline leakage monitoring method and system based on optical fiber sensing are provided, and belongs to the technical field of pipeline leakage monitoring. The disclosure eliminates the jump and drift of the signal baseline by quickly finding the median by dichotomy, and corrects the position of the integration starting point in real time to eliminate the cumulative effect, while retaining the low-frequency response of the sensor. The specific positions of the entry point and the exclusion point of the moving window in the sorted window data are quickly found by dichotomy, the execution speed of the method is greatly accelerated. By constructing the mapping relationship between original data and leakage parameter, a large number of redundant and invalid original data are simplified into leakage parameters equal to the number of segmented vibration data after preprocessing.