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Feature enhancement and signal processing method of distributed optical fiber vibration signal by means of image signal

A distributed optical fiber and vibration signal technology, which is applied in image enhancement, image data processing, and pattern recognition in signals, etc., can solve the problems of no feature enhancement and signal processing, and inconvenient two-dimensional image signal processing methods, so as to facilitate signal processing. Effect

Pending Publication Date: 2017-06-20
WUXI ATIAN OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

In the field of distributed optical fiber vibration signal image processing, there is no specific method of feature enhancement and signal processing, and the existing two-dimensional image signal processing method is inconvenient

Method used

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Embodiment Construction

[0020] 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 specific 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.

[0021] A feature enhancement and signal processing method for imaging distributed optical fiber vibration signals, the method includes the following steps:

[0022] S1. The front-end optical fiber vibration signal is collected, and the pulse signal is transmitted into the sensing optical fiber through the optical transmission module, and the Rayleigh backscattering signal is used as the carrier signal, and then the signal is received by optical time domain reflection technology and interference technology;

[0023] S2. Data acquisition, with FPGA as the main controller and USB as the transmission interface, the hardwar...

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Abstract

The invention discloses a feature enhancement and signal processing method of a distributed optical fiber vibration signal by means of an image signal. The method comprises the steps of (S1) front end optical fiber vibration signal collection, (S2) data collection, (S3) data transmission, (S4) data stacking and interpolation, (S5) two-dimensional data image enhancement, and (S6)the identification of an area to carry out feature representation and description. The invention provides the feature enhancement and signal processing method of distributed optical fiber vibration signal by means of the image signal, through converting a distributed optical fiber vibration signal into a two-dimensional image signal of a unit time, the signal can be conveniently processed through a mode of two-dimensional image recognition, and the characteristic of the signal is enhanced and is extracted through a Fourier descriptor. The method is suitable for extensive promotion.

Description

technical field [0001] The invention relates to the field of distributed optical fibers, in particular to a feature enhancement and signal processing method for imaging distributed optical fiber vibration signals. Background technique [0002] The principle of distributed optical fiber sensing system is to use optical fiber as sensing sensitive element and transmission signal medium at the same time, and adopt advanced OTDR technology to detect the temperature and strain changes at different positions along the optical fiber to realize truly distributed measurement. The proposed distributed optical fiber sensor based on the OTDR-based Rayleigh scattering system has experienced the OTDR-based Raman scattering system and the OTDR-based Brillouin scattering system, and the temperature measurement accuracy and range have been greatly improved. [0003] OFDR was proposed in the 1990s. With the in-depth study of Raman scattering, Brillouin scattering and strong scattering, the int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/11G01H9/00
CPCG01H9/004G06T2207/20036G06T2207/20056G06F2218/02G06F2218/08
Inventor 陈柏杨建成张承涛陈宇陈嘉琳
Owner WUXI ATIAN OPTOELECTRONICS TECH CO LTD
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