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Distributed optical fiber sensing signal mode identifying method and system

A distributed optical fiber, pattern recognition technology, applied in the direction of instruments, anti-theft alarm mechanical starting, alarms, etc., to achieve the effect of low false recognition rate, simple and effective screening method, and good environmental adaptability

Active Publication Date: 2015-07-01
WUHAN WUTOS
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in a complex and changeable application environment, the distributed optical fiber sensing system can reduce or avoid false alarms while identifying intrusion or sabotage behaviors

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  • Distributed optical fiber sensing signal mode identifying method and system
  • Distributed optical fiber sensing signal mode identifying method and system
  • Distributed optical fiber sensing signal mode identifying method and system

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] The distributed optical fiber sensing signal pattern recognition method of the present invention can effectively identify intrusion or destruction signals under the condition that the signals are noisy or deformed, and at the same time reduce false alarms.

[0042] The distributed optical fiber sensing signal pattern recognition method of the embodiment of the present invention, such as figure 1 shown, including the following steps:

[0043] S1. Sample collection. For each behavior excitation signal, collect multiple sets of samples respectively to obtain a sample library; when collecting o...

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Abstract

The invention discloses a distributed optical fiber sensing signal mode identifying method and system. The distributed optical fiber sensing signal mode identifying method includes steps of acquiring samples, and acquiring several groups of samples for excitation signals of each behavior, so as to set up a sample library; roughly screening samples, screening the acquired sample library to remove samples high in discreteness; finely screening the samples, training to generate a classifier used for signal mode identification by means of the screened sample library and storing; identifying signal modes, calculating characteristic vectors for a newly triggered and read section of signal data and subjecting the characteristic vectors to calculation in the stored classifier to obtain mode identification results. The distributed optical fiber sensing signal mode identifying method and system can effectively identify invasion or damage signals in case that signals are carried with noise or distortion, and in the meantime, mistaken reports are reduced.

Description

technical field [0001] The invention relates to the field of signal pattern recognition, in particular to a distributed optical fiber sensing signal pattern recognition method and system. Background technique [0002] Distributed optical fiber sensing is a technology that utilizes the one-dimensional spatial continuity of optical fibers for measurement. The optical fiber is used as both a sensing element and a transmission element. It can continuously and real-time measure the environmental physical parameters distributed along the geometric path of the optical fiber over the entire length of the optical fiber. It is very suitable for a large space range, such as oil pipelines, communication trunk lines, perimeters Measurement of security, forest fire prevention and other occasions. Its technical advantages are high sensitivity, low cost, continuous real-time, long monitoring distance, high concealment, and anti-electromagnetic and other environmental factors. [0003] A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/02
CPCG08B13/02G08B29/18
Inventor 杨玥刘军荣董雷印新达
Owner WUHAN WUTOS
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