Sensing network positioning and addressing system and method based on coding type fiber bragg grating sensing

A fiber Bragg grating, network positioning technology, applied in the fields of information processing, network communication, and sensing technology, can solve the problems of algorithm ambiguity positioning confusion, unable to obtain positioning information, missing matching nodes, etc.

Active Publication Date: 2013-12-04
WUHAN UNIV OF TECH
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Problems solved by technology

When a large number of sensing node changes overlap, the ambiguity of the algorithm will cause a series of

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  • Sensing network positioning and addressing system and method based on coding type fiber bragg grating sensing
  • Sensing network positioning and addressing system and method based on coding type fiber bragg grating sensing
  • Sensing network positioning and addressing system and method based on coding type fiber bragg grating sensing

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[0047] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0048] A network positioning and addressing system based on coded fiber grating sensing of the present invention, such as figure 2 , The system includes a first light source, a second light source, a first fiber grating demodulator, a second fiber grating demodulator, a first coupler, a second coupler, a first optical delayer, a second optical delay Timer, data processing system, sensory signal analysis and condition monitoring system, multiple coded fiber gratings connected in series, wherein the first light source is connected to the first interface of the first coupler, and the second interface of the first coupler passes through the first The optical delayer is connected to one end of a plurality of coded fiber gratings connected in series, the third interface of the first coupler is connected to the signal input end of the data processing system...

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Abstract

The invention discloses a sensing network positioning and addressing system and method based on coding type fiber bragg grating sensing. The sensing network positioning and addressing method includes three levels of intelligent processing processes. The first level adopts circulated matching under condition constraints so as to ensure the only correct matching results, and wavelength information which cannot be addressed in the first level can be secondarily filtered by the third level for further accurate processing. Wavelength information which cannot be totally matched in the second level can enter the third level to be matched in an interactive mode with the second level by utilizing an auxiliary deciding mode based on a decision matrix reasonably until high-accuracy positioning and addressing results are obtained. Compared with a traditional coding type fiber bragg grating sensing network addressing and positioning method, the sensing network positioning and addressing system adopts the multi-level processing mode, rigidly controls matching conditions and matching results, avoids the problem that the traditional method can be failed when used for sensing coinciding of variable quantity, and can achieve accurate addressing and positioning. The sensing network positioning and addressing system and method can be used for positioning and addressing of sensing networks based on coding type fiber bragg grating sensing and has high accuracy and reliability.

Description

technical field [0001] The invention relates to the technical fields of sensing technology, information processing and network communication, and specifically refers to a sensory network positioning and addressing system and method based on coded fiber grating sensing. Background technique [0002] With the rapid development of modern industrial technology, safety monitoring during the operation of large-scale projects and major equipment has always been a hot spot in international research, and has become an important strategic issue for many countries' economy, security and national defense. Traditional electrical sensors have disadvantages such as poor anti-interference ability, incapable of large-scale distributed sensing, weak environmental adaptability, large volume and mass, and difficult deployment of key parts, which cannot meet the needs of long-term accurate safety monitoring. Especially for the long-term intelligent perception and monitoring of the state of large...

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Application Information

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IPC IPC(8): H04W64/00H04W84/18
Inventor 周祖德张帆刘泉徐文君
Owner WUHAN UNIV OF TECH
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