Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof

A fiber optic sensor and micro-displacement technology, which is applied in the direction of optical devices, measuring devices, instruments, etc., can solve the problems of lack of interferometric micro-displacement optical fiber sensors, lack of, and lack of combined use, etc., to solve the problem of micro-displacement detection and realize integration The effect of simplification and easy operation

Active Publication Date: 2016-07-06
SHANGHAI UNIV
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Problems solved by technology

However, for integrated interferometric micro-displacement fiber optic sensors, although there are separate fiber optic interferometer modules and sensor calibration devices on the market, there is a lack of commercial or dedicated integrated interferometric micro-displacement fiber optic sensors based on ultra-small fiber optic lenses.
[0003] A typical integrated interferometric micro-displacement optical fiber sensor should include a fi

Method used

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  • Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof
  • Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof
  • Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof

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Embodiment Construction

[0023] Preferred embodiments of the present invention are discussed as follows in conjunction with the accompanying drawings:

[0024] see figure 1 , an integrated interferometric micro-displacement optical fiber sensor, comprising an optical fiber collimator 101, an ultra-small optical fiber lens 102, an optical fiber interferometer module 105, an indicating laser 108, a broadband laser 109, a data acquisition card 111 and a computer 112, the optical fiber The collimator 101, the ultra-small fiber lens 102, the pointing laser 108, and the broadband laser 109 are respectively connected to the fiber interferometer module 105 through fiber jumpers, and the fiber interferometer module 105 is connected to the data acquisition card 111 and the computer 112 through data lines.

[0025] Such as figure 2 As shown, the fiber optic interferometer module 105 includes a reference arm interface 103, a signal arm interface 104, an indicating laser interface 106, a broadband laser interfa...

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Abstract

The invention discloses an integrated interference type micro-displacement optical fiber sensor, a calibration device thereof and a calibration method for the same. The integrated interference type micro-displacement optical fiber sensor comprises an optical fiber collimator, a super small optical fiber lens, an optical fiber interference module, an indication laser device, a broadband laser device, a data collection card and a computer. The calibration device of the integrated interference type micro-displacement optical fiber sensor comprises an object reflector, a fixed platform, and a five-dimension regulation table with threads. The calibration method of the integrated interference type micro-displacement optical fiber sensor comprises steps of enabling the output terminal of the super small optical fiber lens to directly face the object reflector, moving the five-dimension regulation table with threads through an axis, and obtaining a function relation between the voltage of outputting the interference intensity and the micro-displacement, wherein the function relation is the calibration function of the integrated interference type micro-displacement optical fiber sensor. The calibration method disclosed by the invention can be used for the micro-displacement calibration which is high in accuracy and fast in measurement.

Description

technical field [0001] The invention relates to an integrated interference type micro-displacement optical fiber sensor, a calibration device and a calibration method thereof, which are used in the field of measurement of micro-displacement. Background technique [0002] With the development of testing instruments towards integration and high precision, the precise detection of displacement in the scientific research and production process, especially in the micro-displacement endoscopic measurement, is becoming more and more demanding. Optical fiber sensor is gradually formed along with the development of optical fiber and communication technology. The optical fiber sensor uses the change of the propagation characteristics of light in the optical fiber to modulate the optical wave in the waveguide, so that the optical wave parameter in the optical fiber changes with the change of the measured signal, so as to obtain the magnitude of the measured signal. An integrated inter...

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Application Information

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IPC IPC(8): G01B11/02
CPCG01B11/02
Inventor 王驰徐龙龙孙建美王宁朱茜
Owner SHANGHAI UNIV
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