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Optical fiber intrusion detection method based on space-time two-dimensional sparse representation k-s test of vibration signal

A vibration signal, sparse representation technology, used in instruments, anti-theft alarms, alarms, etc., can solve the problems of large errors in monitoring results and inaccurate alarms, and achieve the effect of eliminating noise and interference intrusion

Inactive Publication Date: 2017-07-07
NORTH CHINA UNIVERSITY OF TECHNOLOGY +1
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Problems solved by technology

However, the monitoring results obtained by this processing method have large errors and inaccurate alarms, which make long-distance complex vibration detection face severe challenges. It is urgent to carry out research on long-distance optical fiber vibration detection methods on this basis.

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  • Optical fiber intrusion detection method based on space-time two-dimensional sparse representation k-s test of vibration signal
  • Optical fiber intrusion detection method based on space-time two-dimensional sparse representation k-s test of vibration signal
  • Optical fiber intrusion detection method based on space-time two-dimensional sparse representation k-s test of vibration signal

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[0029] specific implementation plan

[0030] The technical solutions in the embodiments of the present invention are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those of ordinary skill in the art can obtain other embodiments according to these drawings without any creative effort, which all belong to the protection scope of the present invention.

[0031] See figure 1 as shown, figure 1 is the overall flow of the space-time two-dimensional detection method according to an embodiment of the present invention. Such as figure 1 As shown, the space-time two-dimensional detection algorithm disclosed in this embodiment includes:

[0032] S101: Airspace CFAR detection, performing CA-CFAR detection on reference samples adjacent to detection units in the same time interval;

[0033] S102: Extract th...

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Abstract

The invention provides a fiber intrusion detection method using time-space 2D sparseness of vibration signals to represent K-S test, and aims at a fiber intrusion early-warning system. The method comprises CFAR (Constant False Alarm Rate) detection is carried out on signals of different positions via the CFAR, time-domain K-S test is carried out on data, over-threshold CFAR data is grouped to obtain time-domain to-be-tested data sets, the time interval between data in each time-domain to-be-tested data set is compared with that of prior interference intrusion signals via K-S test, if distribution of the time interval is the same, the detected data set includes interference intrusion signals, and if distribution is different, amplitude K-S test is carried out, namely, the amplitude of data in each time-domain to-be-tested data set is compared with that of the prior interference intrusion signals via K-S test, if distribution of the amplitude is the same, the detected data set is an interference intrusion group, and otherwise, the set is a potential harmful intrusion group. The method detects the intrusion signals in the space-time 2D manner, influence of interference intrusion can rejected, and potential harmful intrusion information is obtained.

Description

technical field [0001] The invention relates to an optical fiber intrusion detection method for vibration detection of an optical fiber intrusion system based on a Kolmogorov-Smorov (K-S) test of a vibration signal space-time two-dimensional sparse representation. [0002] technical background [0003] With the development of the economy, oil and natural gas have become the most important energy sources for the development of the national economy. As the most ideal and economical transportation method for oil and natural gas, long-distance pipelines have been widely used. The oil and gas pipeline is the main artery of energy transportation. Once the pipeline leaks, it is easy to burn and explode, which not only affects the safe production of the pipeline, but also causes huge losses to the life and property of the country and the people. Therefore, the early warning system for pipeline safety has a wide range of application scenarios. [0004] Since most oil and gas pipelin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B13/186
CPCG08B13/186
Inventor 毕福昆郑彤曲洪权杜栩李德生
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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