Method for identifying interference source of vibration source movement

Abstract

The invention discloses a method for identifying an interference source of a vibration source movement. The method comprises the following steps: receiving an alarm vibration signal, wherein the alarmvibration signal comprises a plurality of continuous vibration signals with amplitudes greater than ''0''; generating a two-dimensional array according to acquired alarm vibration signals; continuously acquiring a plurality of amplitude time centers in a plurality of continuous time interval sections with amplitudes greater than ''0'' to form an amplitude time center moving transformation track;acquiring a vibration source movement speed according to the acquired amplitude time center moving transformation track and a corresponding amplitude time center space position change curve; and performing judgement, when the vibration source movement speed is greater than a set vibration source movement speed threshold, the alarm signal is determined as a movement interference signal, otherwise the alarm signal is not a movement interference signal. According to the method for identifying the interference source of the vibration source movement, the identification speed is high, the calculation amount in a system fitting is reduced, and the identification efficiency is improved; and the identification effect is remarkable, vehicle interferences of parallel fiber movement can be accuratelyidentified, so that the false alarm rate of the system is reduced, and the effective alarm quantity of the system is improved.

Description

technical field [0001] The invention relates to a vibration source movement interference source identification method, which is a vibration source movement interference source identification method based on an optical fiber vibration safety early warning system. Background technique [0002] With the application of the fiber optic vibration safety early warning system, the system monitoring area is complex and diverse, including deployment in various environments, such as around military equipment, along oil pipelines, power stations, near hospitals, etc. The optical fiber vibration safety early warning system uses distributed optical fibers as sensors to collect vibration signals along the optical fiber, analyze the collected vibration signals, automatically identify the state and type of vibration sources along the line, and realize timely alarming of harmful vibration sources in the defense area. Has important practical value. [0003] At present, the signal detection te...

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Problems solved by technology

[0004] As a long-distance safety monitoring system, the optical fiber vibration safety early warning system has various interference signals along the line, which interfere with the normal early warning of the system and reduce the accuracy of the system alarm.

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