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A detection method based on fiber grating watertight door sealing state

A fiber grating and detection method technology, applied in the field of ships, can solve the problems of direct and real-time monitoring of watertight doors, poor corrosion resistance and chemical stability, and threats to ship operation safety, etc. Effects of improved detection accuracy due to electromagnetic interference

Active Publication Date: 2022-07-15
WUHAN UNIV OF TECH
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Problems solved by technology

[0005] In order to solve the problem that the current watertight door seal detection system has poor anti-interference ability, poor corrosion resistance and chemical stability, it cannot achieve the direct and real-time monitoring purpose of watertight doors; operational security issues

Method used

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  • A detection method based on fiber grating watertight door sealing state
  • A detection method based on fiber grating watertight door sealing state
  • A detection method based on fiber grating watertight door sealing state

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Embodiment Construction

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings. The content shown in each figure is only used to understand the technical content of the invention, and does not represent the actual scale and real shape of the product, wherein the same reference numerals indicate parts with the same structure or the same function but similar structures.

[0022] In this text, "parallel", "perpendicular" and the like are not limitations in strict mathematical and / or geometric senses, and may also include errors that can be understood by those skilled in the art and allowable when manufacturing or using the product. In addition, "perpendicular" includes not only the mutual perpendicularity when two objects are directly in contact with each other in space, but also the mutual perpendicularity when two objects are ...

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Abstract

The invention discloses a detection method based on the sealing state of an optical fiber grating watertight door. The compensation fiber grating strain gauge is fixedly installed on the door panel of the watertight door to eliminate the influence of temperature, the wavelength difference of the fiber grating when the watertight door is closed and opened is monitored in real time, the strain difference curve of the watertight door is obtained, and the strain of the fiber grating is established through the threshold judgment method. The difference curve database can accurately judge the sealing state of the watertight door. The detection method based on optical fiber sensing technology is used to greatly improve the detection accuracy and stability, and the installation method of multiple fiber grating strain gauges at multiple points is adopted to improve the accuracy of the detection of the sealing state of the watertight door, and when the watertight door is abnormal In the sealed state, the cause of abnormal sealing can be judged, the abnormal sealing position can be accurately positioned, and the reliability of the detection method can be improved.

Description

technical field [0001] The invention belongs to the technical field of detection of the sealing state of watertight doors in the field of ships, and particularly relates to a detection method for the sealing state of watertight doors based on optical fiber gratings. Background technique [0002] The watertight door is an important structure to ensure the safe running of the ship. The watertight door of the ship is very important to ensure the watertightness of the cabin, and then to ensure the safety of the engine room and even the ship. Therefore, the seal detection of ship watertight doors is particularly important. [0003] The sealing detection system is an important ship signal equipment. It uses sensors to detect the sealing information of the watertight door, and can obtain the sealing state of the watertight door after it is closed. Most of the existing watertight door seal detection systems use ultrasonic detection methods. The basic principle is to place the ultra...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/36
CPCG01M3/363
Inventor 潘建军侯伟祁耀斌郭会勇张俊杰
Owner WUHAN UNIV OF TECH
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