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Optical fiber sensing device with electromagnetic environment monitoring function

A technology for environmental monitoring and optical fiber sensing, which can be used in measuring devices, measuring the force of change in optical properties of materials when they are stressed, and measuring heat, etc., and can solve problems such as environmental monitoring without electric power.

Active Publication Date: 2018-01-16
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the signal acquisition and processing module only analyzes the specific frequency point of the optical fiber sensing signal, and does not have the ability to monitor the power electromagnetic environment

Method used

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  • Optical fiber sensing device with electromagnetic environment monitoring function
  • Optical fiber sensing device with electromagnetic environment monitoring function
  • Optical fiber sensing device with electromagnetic environment monitoring function

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] The invention provides an optical fiber sensing device with electromagnetic environment monitoring function, the specific structure diagram is as follows figure 1As shown, it mainly includes a laser 1, a first fiber coupler 201, a second fiber coupler 202, an acousto-optic modulator 3, a fiber circulator 4, an optical interface 5, a photodetector 6, a low noise amplifier 7, and a radio frequency antenna 8 , band-pass filter 9, radio frequency coupler 10, frequency synthesizer 11, mixer 12, low-pass filter 13, data acquisition and processing module 14, computer 15; The connection relationship between them is specifically as follows:

[0030] The output end of the laser 1 is connected to the input end of the first fiber coupler 201, the first output end of the first fiber coupler 201 is connected to the input end of the acousto-optic modulator 3, and the...

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PUM

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Abstract

The invention provides an optical fiber sensing device with an electromagnetic environment monitoring function, which comprises a laser (1), a first optical fiber coupler (201), a second optical fibercoupler (202), an acousto-optic modulator (3), an optical fiber circulator (4), an optical interface (5), a photodetector (6), a low-noise amplifier (7), a radio frequency antenna (8), a bandpass filter (9), a radio frequency coupler (10), a frequency synthesizer (11), a mixer (12), a low pass filter (13), a data acquisition and processing module (14) and a computer (15). The optical fiber sensing device with the electromagnetic environment monitoring function provided by the invention integrates a Brillouin scattering signal measurement mode and an electromagnetic environment measurement mode, and provides a technical support for communication spectrum monitoring of a power wireless communication private network and analysis on a spectrum generated by discharge of high-voltage equipmentand facilities.

Description

technical field [0001] The invention relates to the technical field of electric power automation, in particular to an optical fiber sensing device with an electromagnetic environment monitoring function. Background technique [0002] Since optical fiber can also be used as a communication and sensing medium, its passive, anti-electromagnetic interference, corrosion resistance, high temperature resistance and other characteristics determine its great potential in the development of global energy Internet. Mature optical fiber sensing technology and equipment have been applied in the electric power industry, such as Raman optical time domain reflectometer for transformer temperature monitoring, Brillouin optical time domain reflectometer for submarine cable temperature / stress monitoring, Brillouin optical time domain reflectometer for submarine cable temperature / stress monitoring, Yuanguang time-domain analyzer is used for icing monitoring of transmission lines, application of...

Claims

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Application Information

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IPC IPC(8): G01L1/24G01K11/32G01R31/12G01R23/17G01K11/322
Inventor 吕立冬孙晓艳陶静姚继明钟成崔力民李炳林郭经红
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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