A kind of optical fiber sensing wireless measurement system and its data processing method

A technology of wireless measurement and optical fiber sensing, which is applied in the direction of measuring devices, instruments, special recording/indicating devices, etc., can solve problems such as U-shaped drift of the center wavelength of insertion loss, and achieve the effect of accurately demodulating physical parameters

Active Publication Date: 2021-01-05
WUHAN UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the defects existing in the prior art, the present invention provides an optical fiber sensing wireless measurement system and its data processing method, which solves the phenomenon of U-shaped drift of the central wavelength caused by excessive insertion loss, and realizes accurate demodulation of physical parameters

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  • A kind of optical fiber sensing wireless measurement system and its data processing method
  • A kind of optical fiber sensing wireless measurement system and its data processing method
  • A kind of optical fiber sensing wireless measurement system and its data processing method

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[0024] 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 the accompanying drawings and embodiments.

[0025] The invention provides an optical fiber sensing wireless measurement system, such as figure 1 As shown, it includes broadband light source, high-speed demodulator, circulator, first spatial optical collimator, second spatial optical collimator, FBG optical sensor and computer; the second spatial optical collimator and FBG optical sensor are fixed on the reciprocating parts Above; the light emitted by the broadband light source enters the first spatial optical collimator and the second spatial optical collimator through the circulator, and the optical signal obtained through the wireless coupling of the two optical collimators is reflected by the FBG optical sensor, and the reflected optical signal passes through the two optical collimators ag...

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Abstract

The invention discloses a fiber sensing wireless measuring system and a data processing method thereof. Light emitted by a broadband light source enters a first spatial optical calibrator and a secondspatial optical calibrator through a circulator; an optical signal obtained by wireless coupling of the two optical calibrators is reflected by an FBG optical sensor; the reflected optical signal isprocessed by wireless coupling of the two optical calibrators and the processed signal enters a high-speed demodulator through the circulator; and then the processed signal is transmitted to a computer for signal processing. Therefore, a phenomenon of the U type drifting of the central wavelength due to the excessive insertion losses is avoided; and accurate demodulation of physical parameters isrealized.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, and more specifically, relates to an optical fiber sensing wireless measurement system and a data processing method thereof. Background technique [0002] For some special industrial environments, the application of traditional electrical sensing systems is limited due to their inherent non-explosion-proof nature and difficulty in networking. For example, for the measurement of bearing bush temperature of petrochemical compressors, electrical sensors are not suitable for such flammable and explosive environments. Compared with traditional electrical sensors, optical fiber sensors are small in size, high temperature resistant, explosion-proof, and anti-electromagnetic Strong capacity, very suitable for harsh environment like petrochemical. [0003] The optical fiber sensing system for monitoring the physical parameters of reciprocating parts has the problem of optical fiber winding....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D3/036
CPCG01D3/036
Inventor 张翠何为童杏林刘访邓承伟冒燕
Owner WUHAN UNIV OF TECH
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