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A Fiber Bragg Grating Angle Sensor

A fiber optic Bragg and angle sensor technology, applied in the field of sensing, can solve the problems of large measurement error, large volume, and complex structure, and achieve the effects of strong practicability, improved resolution, and ingenious design

Active Publication Date: 2020-10-30
THE HONG KONG POLYTECHNIC UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fiber grating gravity pendulum type inclination sensor mentioned above has the disadvantages of large volume and complicated structure when measuring the measured object; Overall deformation, there are shortcomings such as large measurement errors

Method used

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  • A Fiber Bragg Grating Angle Sensor
  • A Fiber Bragg Grating Angle Sensor
  • A Fiber Bragg Grating Angle Sensor

Examples

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Embodiment Construction

[0023] Such as Figure 1-Figure 5 as shown, figure 1 A schematic diagram showing a preferred embodiment of the fiber Bragg grating angle sensor of the present invention; figure 2 show figure 1 The schematic diagram of the rotating pair mechanism of the fiber Bragg grating angle sensor shown; image 3 show figure 2 A schematic diagram of the other direction of the revolving pair mechanism shown; Figure 4 show figure 1 Schematic diagram of the fiber Bragg grating element of the fiber Bragg grating angle sensor shown; Figure 5 show figure 1 Schematic of the rigid rotating short end and pretension applicator of the fiber Bragg grating angle sensor shown. Specifically, the fiber Bragg grating angle sensor includes a rigid rotating long end 10 and a rigid rotating short end 20; the rigid rotating long end 10 and the rigid rotating short end 20 are relatively rotatably connected to form a rotating pair mechanism 50; the rigid rotating long end 10 Including a rigid member ...

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Abstract

The invention relates to a fiber Bragg grating angle sensor, which comprises a rigid rotating long end (10) and a rigid rotating short end (20), wherein the rigid rotating long end (10) and the rigidrotating short end (20) form a rotating pair mechanism (50); the rigid rotating long end (10) comprises a rigid member (11); the rigid member (11) comprises a rigid rod and a fixed member, and the rigid rod is rotatably connected with the rigid rotating short end (20) through a joint (13). The fiber Bragg grating angle sensor further comprises at least two fiber Bragg grating elements (30), wherein the two fiber Bragg grating elements (30) are respectively arranged at two sides of the rigid rod; two segments of each fiber Bragg grating element (30) are fixedly connected with the fixed member and the rigid rotating short end (20) respectively. The fiber Bragg grating angle sensor also comprises a pre-tension applicator (22) which is used for tensioning the fiber Bragg grating elements (30).The fiber Bragg grating angle sensor is ingenious in design and high in practicability.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a fiber Bragg grating angle sensor. Background technique [0002] The inclination sensor is suitable for long-term measurement of the inclination, displacement and other deformation of civil engineering structures, which is convenient for the automation of civil engineering structure measurement and detection. Common inclination sensors can be divided into electrical and optical types according to different sensing technologies. Among them, the electrical inclination sensor has poor anti-electromagnetic interference ability, and the signal is easy to attenuate. It has obvious advantages in strong electromagnetic interference or large-scale measurement and monitoring cases. At present, this type of sensor has been widely used in the field of civil engineering structure measurement and monitoring. [0003] At present, optical inclination sensors are mainly divided into fiber gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/353G01C9/00
CPCG01C9/00G01D5/35316
Inventor 倪一清王仲宇王颢霖张超袁懋诞
Owner THE HONG KONG POLYTECHNIC UNIV