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Reflective fiber displacement sensor field calibration system and method

A displacement sensor, reflective technology, used in radio wave measurement systems, instruments, use of re-radiation, etc., can solve the problem of different output voltage-displacement curves, and achieve increased sensitivity and resolution, improved work performance, and simple operation. Effect

Inactive Publication Date: 2018-11-23
INST OF GEOLOGY CHINA EARTHQUAKE ADMINISTRATION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the influence of the shape of the reflective surface and the material of the measured surface, even when the same sensor measures different objects, the output voltage-displacement curves are usually very different

Method used

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  • Reflective fiber displacement sensor field calibration system and method
  • Reflective fiber displacement sensor field calibration system and method
  • Reflective fiber displacement sensor field calibration system and method

Examples

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Embodiment 1

[0035] This embodiment provides a reflective optical fiber displacement sensor field calibration system, such as figure 1 and figure 2 As shown, it includes: workbench 1, reflective optical fiber displacement sensor 3, laser displacement sensor 2, target holder 5 and central processing unit; reflective optical fiber displacement sensor 3, laser displacement sensor 2, and target holder 5 are all set on workbench 1 above, and connected with the central processing unit, through the central processing unit to measure, record the information of each component, and control each component.

[0036] The reflective optical fiber displacement sensor 3 and the laser displacement sensor 2 are arranged side by side on the workbench 1 through a fixed bracket, and the laser displacement sensor 2 is used as a reference to accurately compare the displacement value of the laser displacement sensor 2 and the voltage value of the reflective optical fiber displacement sensor 3 After a period of ...

Embodiment 2

[0052] This embodiment is an improvement on the basis of Embodiment 1, and the only improvement is the difference in the structure of the fiber optic probe 4, such as image 3 As shown, the optical fiber probe 4 is provided with a coaxially arranged transmitting optical fiber 41, a reference optical fiber 42, and a receiving optical fiber 43. There are multiple transmitting optical fibers 41 and receiving optical fibers 43, and multiple transmitting optical fibers 41 are arranged around the outside of the reference optical fiber 42. , a plurality of receiving optical fibers 43 are arranged around the emitting optical fiber 41 .

[0053] This embodiment adopts the coaxial multi-layer arrangement of the transmitting optical fiber 41, the reference optical fiber 42 and the receiving optical fiber 43, which has good symmetry and can make it easier for the light emitted by the light source to be coupled into the optical fiber probe 4, ensuring the transmission of larger Illuminatio...

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Abstract

The invention discloses a reflective fiber displacement sensor field calibration system and method; the system comprises a work table, a reflective fiber displacement sensor, a laser displacement sensor, a target seat and a central processor; the reflective fiber displacement sensor, the laser displacement sensor, and the target seat are arranged above the work table, and connected with the central processor; the method uses the laser displacement sensor as reference, synchronizes a displacement value and a voltage value and stores same, thus correspondingly forming more measuring points of acalibration curve, and effectively increasing accuracy of the calibration curve formed by follow up fitting process; the reflective fiber displacement sensor comprises a fiber probe; an emission fiber, a reference fiber and a reception fiber are coaxially arranged in the fiber probe; the emission fiber and the reception fiber are coaxially arranged in multi-layer; the reference fiber is arranged so as to increase the sensitivity and resolution of the reflective fiber displacement sensor, and improving the working performance.

Description

technical field [0001] The invention relates to the technical field of reflective optical fiber displacement sensing, in particular to an on-site calibration system and method for a reflective optical fiber displacement sensor. Background technique [0002] Reflective optical fiber displacement sensing technology is a continuous light source as the measurement carrier, the light intensity as the measurement signal, and the optical fiber as the propagation medium. By sensing the measured signal and distinguishing the relationship between the received signal and the transmitted signal, the displacement of the measured object can be obtained. Technology (references: Cong Hong, reflective optical fiber micro-displacement sensor. 2003). Compared with other displacement sensors, optical fiber displacement sensors have the characteristics of high frequency response (high sensitivity), non-contact measurement, small size, simple structure, resistance to electrical interference, and ...

Claims

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Application Information

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IPC IPC(8): G01S7/40G01S17/08
CPCG01S7/40G01S7/4004G01S17/08
Inventor 李世念卓燕群汲云涛郭彦双刘力强
Owner INST OF GEOLOGY CHINA EARTHQUAKE ADMINISTRATION
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