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Fiber Optic Acceleration Sensor

An acceleration sensor, acceleration technology, applied in the measurement of acceleration, speed/acceleration/shock measurement, acceleration measurement using inertial force, etc. increase the guiding effect

Active Publication Date: 2020-01-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an optical fiber acceleration sensor to solve the problems of complex structure and short life in the prior art

Method used

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  • Fiber Optic Acceleration Sensor
  • Fiber Optic Acceleration Sensor

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include...

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Abstract

The invention provides an optical fiber acceleration sensor which comprises an acceleration sensor including a mass block and an elastic cylinder, wherein the mass block is provided with a conical outer surface, and the inner surface of the elastic cylinder is in a cone shape matched with the conical outer surface of the mass block, the mass block can be movably arranged in the elastic cylinder inthe axial direction, and the elastic cylinder can be expanded or contracted outwards along with the movement of the mass block. The optical fiber acceleration sensor further comprises an optical fiber interferometer which comprises a sensitive optical fiber and a reference optical fiber, wherein the sensitive optical fiber is wound on the outer side of the acceleration sensor to form an optical fiber coil, and the peripheral length of the optical fiber coil is increased or reduced along with the external expansion or contraction of the elastic cylinder. According to the technical scheme, theproblems of complex structure and short service life in the prior art are effectively solved.

Description

technical field [0001] The invention relates to the field of acceleration sensors, in particular to an optical fiber acceleration sensor. Background technique [0002] Acceleration sensors can convert the information of external acceleration changes into electrical or optical signals that are easy to measure, so they are widely used in geological exploration, oil extraction, and large-scale building monitoring. The traditional acceleration sensor mainly adopts the electric base structure, and uses the principle of piezoelectric effect to obtain the acceleration of the object. In addition to disadvantages such as low sensitivity, the above-mentioned acceleration sensor has poor survivability in extreme environments (such as high temperature and high pressure environments, etc.). Compared with the above-mentioned traditional acceleration sensors, fiber optic acceleration sensors have the advantages of high sensitivity, high dynamic range and strong anti-electromagnetic interf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P15/03
CPCG01P15/032
Inventor 谢斌潘勇张敏胡承军芦志伟章庆勇段胜男周宏朴邱晓康古丽娟
Owner PETROCHINA CO LTD