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Fiber Bragg Grating Shape Sensor Fixture

A fiber grating and sensor technology, applied in the direction of manufacturing tools, workpiece clamping devices, etc., can solve the problems of low precision, expensive equipment, difficult packaging, etc., and achieve improved stability and reliability, improved measurement accuracy, and smooth surface Effect

Active Publication Date: 2018-06-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In endoscopic inspection, since the shape cannot be detected deep inside, X-ray and other technologies are usually used. However, due to the shortcomings of electromagnetic interference, real-time performance, no 3D information, and expensive equipment, the existing X-ray technology is not practical in the process of inspection. restricted
Due to its advantages of anti-magnetic field interference, no radiation, high precision, and real-time performance, fiber grating shape sensors have received more and more attention and research in shape reconstruction. However, due to their small diameter, packaging is difficult
[0003] The position accuracy of the fiber grating in the existing fiber grating shape sensor is not high, and the adhesive is mostly applied by hand, which leads to the disadvantages of low precision, poor stability and poor repeatability of the sensor

Method used

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  • Fiber Bragg Grating Shape Sensor Fixture
  • Fiber Bragg Grating Shape Sensor Fixture
  • Fiber Bragg Grating Shape Sensor Fixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see Figure 1~Figure 4 , this fiber grating packaging fixture includes a base (I), a fiber grating axial adjustment device (II) with opposite directions on the left and right sides, n fiber grating-memory alloy wire positioning devices (III) in the middle and n adhesives The encapsulation device (IV) is used for encapsulation of n grid points, characterized in that: the left and right fiber grating axial adjustment devices (II) and the n fiber grating-memory alloy wire positioning devices (III) are all installed with bolts On the base, the n adhesive packaging devices (IV) are respectively installed on the n optical fiber grating-memory alloy wire positioning devices (III).

Embodiment 2

[0025] This embodiment is basically the same as Embodiment 1, and the features are as follows:

[0026] The structure of the fiber grating axial adjustment device (II) is: a one-dimensional mobile platform (13) is installed on the base (I), and the one-dimensional mobile platform (13) is connected with an adjustment plate (1); four Cylindrical sliders (10) are respectively placed in the matching slider holes (1-2) on the adjustment plate (1), and each slider (10) has a groove (10-5) along the longitudinal direction , for clamping the fiber grating, two recesses (10-4) are cut out at the rear end of the slider (10), and a fastening threaded hole (10-3) for clamping the fiber grating is drilled on one recess, Carve a transverse groove (10-5) on the front of the concave table to the longitudinal groove where the fiber grating is placed, so that the part clamping the fiber grating can be deformed enough; the front end of the adjustment plate (1) is connected with four connecting r...

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Abstract

The invention provides a packaging fixture for a fiber grating shape sensor. The packaging fixture comprises a base, fiber grating axial adjusting devices, n fiber grating-memory alloy wire positioning devices and n adhesive packaging devices, wherein the fiber grating axial adjusting devices are arranged on the left side and the right side correspondingly and opposite in direction, and the n fiber grating-memory alloy wire positioning devices and the n adhesive packaging devices are arranged in the middle and used for packaging n grating points. The packaging fixture is characterized in that the two fiber grating axial adjusting devices on the left side and the right side and the n fiber grating-memory alloy wire positioning devices are all installed on the base through bolts, and the n adhesive packaging devices are installed on the n fiber grating-memory alloy wire positioning devices respectively. According to the packaging fixture for the fiber grating shape sensor, not only is the packaging precision of the fiber grating shape sensor improved, but also mold packaging is achieved, and the stability and the reliability of the sensor are improved, so that the blank of research in the aspect is filled.

Description

technical field [0001] The invention relates to a packaging fixture for an optical fiber grating shape sensor, which can conveniently and reliably locate the position accuracy of the optical fiber grating in the axial, circumferential and radial directions, and can realize molded packaging of an adhesive. It can solve the problems of sensor accuracy, stability, reliability and processing speed. The device belongs to the field of sensor packaging equipment. technical background [0002] In endoscopic inspection, since the shape cannot be detected deep inside, X-ray and other technologies are usually used. However, due to the shortcomings of electromagnetic interference, real-time performance, no 3D information, and expensive equipment, the existing X-ray technology is not practical in the process of inspection. restricted. Due to its anti-magnetic field interference, no radiation, high precision, and real-time performance, fiber grating shape sensors have received more and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00
CPCB25B11/00
Inventor 吴仲台章亚男沈林勇肖海景玲玲
Owner SHANGHAI UNIV
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