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Inclination angle measuring instrument and system based on optical fiber structure

A technology of optical fiber structure and measuring instrument, which is applied in measuring device, measuring inclination, measuring ultrasonic/sonic wave/infrasonic wave, etc., which can solve problems such as low sensitivity and weak optical signal

Inactive Publication Date: 2020-06-23
西安柯莱特信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the limitation of the high Young's modulus of the optical fiber material itself, the traditional optical fiber inclination measuring instrument will modulate the optical signal very weakly when the inclination angle changes in the external environment, so its sensitivity is usually very low

Method used

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  • Inclination angle measuring instrument and system based on optical fiber structure
  • Inclination angle measuring instrument and system based on optical fiber structure
  • Inclination angle measuring instrument and system based on optical fiber structure

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Embodiment 1

[0038] The invention provides an inclination measuring instrument based on an optical fiber structure, figure 1 It is a schematic diagram of the inclinometer based on the optical fiber structure. Such as figure 1 As shown, the inclinometer includes: an input optical fiber, a chamber and an output optical fiber, wherein the output end of the light source is connected to the input optical fiber, the output end of the input optical fiber is connected to the chamber, the output end of the chamber is connected to the output optical fiber, and the cavity A moving part is provided in the room, and the moving part is used for displacement under the action of vibration.

[0039] The input fiber, the chamber, and the output fiber are connected in sequence. In practical applications, the other end of the input fiber is connected to a light source, and the other end of the output fiber is connected to a detector. The detector can generally be a spectrometer. , the substrate is attached ...

Embodiment 2

[0054] Figure 4 is a structural schematic diagram of an inclinometer based on an optical fiber structure with a horizontal plane, such as Figure 4 Shown, on the basis of Embodiment 1, is a schematic diagram of an inclinometer based on an optical fiber structure with a horizontal plane. The inclination measuring instrument based on the optical fiber structure includes: an input optical fiber, a chamber and an output optical fiber, wherein the output end of the light source is connected to the input optical fiber, the output end of the input optical fiber is connected to the chamber, and the output end of the chamber is connected to the chamber. The output optical fiber is connected, and a moving part is arranged in the chamber, which is used for displacement under the action of vibration, and the connection position between the chamber and the output optical fiber is a horizontal plane. When the light emitted by the light source is transmitted to the output fiber through the...

Embodiment 3

[0059] Figure 7 Schematic diagram of the structure of the optical fiber-based inclinometer with a noble metal thin film. Such as Figure 7 Shown, on the basis of Example 1, is a schematic diagram of an inclinometer with a noble metal thin film based on an optical fiber structure. The inclination measuring instrument based on the optical fiber structure includes: an input optical fiber, a chamber and an output optical fiber, wherein the output end of the light source is connected to the input optical fiber, the output end of the input optical fiber is connected to the chamber, and the output end of the chamber is connected to the chamber. The output optical fiber is connected, and a moving part is arranged in the chamber, and the moving part is used for displacement under the action of vibration. The outside of the chamber is coated with a metal film, and the thickness of the metal film is greater than 100 nanometers. When the light emitted by the light source is transported...

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Abstract

The invention relates to an inclination angle measuring instrument and system based on an optical fiber structure, and particularly relates to the field of inclination angle measuring devices. According to the inclination angle measuring instrument based on the optical fiber structure, during usage, a substrate is attached to a to-be-measured object; when the to-be-measured object is inclined, aninner portion of a chamber is also inclined and a position of a moving part can be changed; the position of the moving part in the chamber is different at different inclination angles; and therefore,light energy transmitted into an output optical fiber is different. Through detecting a change of a transmission peak in a transmission spectrum, the inclination angle can be measured by the inclination angle measuring instrument based on the optical fiber structure; the moving part can directly modulate an optical signal in the optical fiber, and sensitivity of the inclination angle measuring instrument can be greatly improved; in addition, when the to-be-measured object vibrates, the moving part in the chamber can move along with the to-be-measured object, and the detected transmission spectrum can be obviously changed so that the inclination angle measuring instrument has another function of detecting the vibration of the object.

Description

technical field [0001] The invention relates to the field of inclination measuring devices, in particular to an inclination measuring instrument and system based on an optical fiber structure. Background technique [0002] Real-time monitoring of tilt angle and tilt direction plays an important role in civil, military, aerospace and other fields. For example: high-rise buildings, bridges, dams, and large-scale equipment must always monitor their inclination angles relative to the plumb line. In the military, it is often necessary to establish an instrument for measuring the height difference between two points on the ground with a horizontal line of sight. [0003] Compared with the traditional sensing structure based on electronic components, the optical fiber sensing structure has the advantages of anti-electromagnetic interference, anti-corrosion, compact structure and so on. [0004] However, due to the limitation of the high Young's modulus of the optical fiber materia...

Claims

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Application Information

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IPC IPC(8): G01C9/10G01H9/00
CPCG01C9/10G01C2009/105G01C2009/107G01H9/004
Inventor 不公告发明人
Owner 西安柯莱特信息科技有限公司
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