Distribution type online measurement method for optical cable's wind noise

Abstract

The invention relates to a distribution type online measurement method for optical cable's wind noise. The method comprises: using a distributed type wind vibration monitoring device to access the communication fiber passing a to-be-tested channel to obtain the wind vibration frequency spectrums of the entire channel at all time; and through the use of a conversion method, calculating the audible wind noise at each position in real time. Through the use of light sensing technology, the wind vibration frequency spectrums can be detected; and through a calibration model, the radiation sound pressure level can be calculated so as to further convert and obtain for the wind pressure level on the ground based on the line characteristics. With the system it is possible to conveniently measure the magnitude of the wind noise radiated from all positions along an optical fiber so as to solve the problems in the prior art that in dot type or ground type measurement, environment often plays a limiting role and the measurement result is not universal.

Description

technical field [0001] The invention relates to the technical field of electric power monitoring, in particular to a distributed on-line measurement method for wind noise of transmission line optical cables. Background technique [0002] Wind noise is an important source of noise on transmission lines. When it is severe, it can exceed environmental noise standards. It can produce certain sound pollution in densely populated areas such as cities. With the densification of transmission networks and the expansion of population residences, some line areas The noise level in this section has affected the normal production and life of human beings. [0003] The industry standard for the measurement method of audible noise on transmission lines is to use a sound level meter to perform fixed-point, directional short-term or long-term measurements at several different distances directly below the line and on the side of the line. It is required that the vicinity of the measurement po...

AI Technical Summary

Problems solved by technology

[0004] The traditional measurement method has strict requirements on the environment, and it is difficult to achieve ideal conditions in most cases, and it cannot avoid the influence of electromagnetic and background noise, so the measurement data is often not accurate, and point measurement is not representative. The cost of determining the strong point of noise is relatively large

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