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Optical fiber sensing method allowing simultaneous measurement of multiple parameters

An optical fiber sensing and optical fiber sensor technology, applied in the field of sensors, can solve the problems of high cost, difficult to detect the environment, complex structure, etc.

Active Publication Date: 2013-12-04
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0003] Taking the SMS optical fiber sensing system as an example, at present, in the field of SMS optical fiber sensing, the methods for simultaneous measurement of multiple parameters are mostly based on the multi-segment SMS optical fiber structure, using spectral characteristics such as wavelength drift. This method has a relatively complex structure and requires Using OSA, the cost is high, and it is not easy to be used in the real detection environment

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  • Optical fiber sensing method allowing simultaneous measurement of multiple parameters

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[0060] A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute part of the invention.

[0061] refer to Figure 1 to Figure 17 Examples of the present invention will be described.

[0062] In order to make the above objects, features and advantages more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0063] The invention is realized by taking single-channel blind signal separation to realize multi-parameter simultaneous measurement in an SMS optical fiber sensing system as an example.

[0064] as attached figure 1 Shown, a kind of optical fiber sensing method based on...

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Abstract

The invention relates to the technical field of sensors, particularly to an optical fiber sensing method allowing simultaneous measurement of multiple parameters. The optical fiber sensing method comprises collecting and obtaining one channel observed data through an optical fiber sensor which allows simultaneous action of multiple parameters; obtaining multichannel observed data through a method of delaying certain sampling points; preprocessing the obtained multichannel observed data, wherein the preprocessing comprises centralization and whitening; separating multiple parameters from observed signals by means of a traditional blind signal separation technology; performing corresponding signal processing on the separated multiple parameters to obtain effective information of the parameters. The optical fiber sensing method allowing the simultaneous measurement of the multiple parameters achieves the simultaneous measurement of the multiple parameters of an optical fiber sensing system by utilizing a single channel blind signal separation technology, and is high in accuracy and easy to achieve. Through the application of the optical fiber sensing method allowing the simultaneous measurement of the multiple parameters, the structure of the optical fiber sensing system allowing the simultaneous measurement of the multiple parameters is simplified, and the costs of the optical fiber sensing system allowing the simultaneous measurement of the multiple parameters are reduced.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an optical fiber sensing method for simultaneously measuring multiple parameters. Background technique [0002] Vibration, temperature, stress, etc. are some parameters that often need to be measured in production and life. In the real production and living environment, multiple parameters often act at the same time, so in order to adapt to the real situation, it is of great practical significance to study the method of simultaneous measurement of multiple parameters. [0003] Taking the SMS optical fiber sensing system as an example, at present, in the field of SMS optical fiber sensing, the methods for simultaneous measurement of multiple parameters are mostly based on the multi-segment SMS optical fiber structure, using spectral characteristics such as wavelength drift. This method has a relatively complex structure and requires The cost of using OSA is relatively high, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/26
Inventor 李强黄泽铗王智张丽梅刘岚岚
Owner BEIJING JIAOTONG UNIV
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