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Instantaneous cable force identification method based on wavelet and isoline, electronic equipment and medium

A recognition method and contour line technology, applied in character and pattern recognition, tension measurement, instruments, etc., can solve problems such as installation and maintenance difficulties, low collection efficiency, and inability to obtain cable sag information to achieve denoising better effect

Pending Publication Date: 2022-04-01
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the data acquisition efficiency of the contact acceleration sensor is low, the installation and maintenance are difficult, and the sag information of the cable cannot be obtained.

Method used

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  • Instantaneous cable force identification method based on wavelet and isoline, electronic equipment and medium
  • Instantaneous cable force identification method based on wavelet and isoline, electronic equipment and medium
  • Instantaneous cable force identification method based on wavelet and isoline, electronic equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] image 3 A flow chart showing the step of the instantaneous sorting force recognition method based on the wavelet and the contour is shown in accordance with one embodiment of the present invention.

[0112] Such as image 3 As shown, the transient sorting force recognition method based on wavelet and contour includes: Step 1: Take the cable vibration displacement signal by microwave interference radar, perform small window focus analysis for the cable vibration displacement signal: Step 101: According to the small window The cable vibration displacement signal is continuously complexed and the wavelet coefficient is obtained; step 102: Reduce the wavelet coefficient by the wavelet soft threshold denoising method, obtaining a wavelet coefficient after noise reduction; step 103: according to the noise reduction The wavelet coefficient, extracts the wavelet ridge by the equivalent line method; Step 104: Fit the wavelet ridge with the neighboring method to fit the interpolated ...

Embodiment 2

[0139] The present disclosure provides an electronic device comprising: a memory, a executable instruction, a processor, a processor running a memory, to implement the above-described wavelet and contour-based transient cable force recognition method .

[0140] The electronic device according to the embodiment of the present disclosure includes a memory and a processor.

[0141] This memory is used to store non-temporary computer readable instructions. Specifically, the memory can include one or more computer program products, which may include various forms of computer readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory can, for example, include a random access memory (RAM) and / or a cache, or the like. This non-volatile memory can, for example, include a read only memory (ROM), hard disk, flash memory, and the like.

[0142] The processor can be a central processing unit (CPU) or other form of processing unit having data processing ...

Embodiment 3

[0146] The present disclosure provides a computer readable storage medium that stores a computer program that implements the transient solength cable identification method based on wavelet and contour when executed by the processor.

[0147] According to a computer readable storage medium according to an embodiment of the present disclosure, a non-transitory computer readable instruction is stored. When the non-transitory computer readable instruction is run by the processor, all or some of the steps of the embodiments of the present disclosure are performed.

[0148] The above computer readable storage medium includes, but is not limited to, a light storage medium (eg, a CD-ROM and DVD), magneto-optical storage medium (eg, Mo), magnetic storage medium (eg, a tape or mobile hard disk), has built-in Revolving media (e.g., memory cards) of non-volatile memory and media with built-in ROM (eg ROM box).

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Abstract

The invention discloses an instantaneous cable force identification method based on a wavelet and a contour line, electronic equipment and a medium. The method comprises the following steps: step 1, obtaining a vibration displacement signal of the inhaul cable through a microwave interference radar, and carrying out small window focusing analysis: carrying out continuous complex wavelet transform according to a small window signal to obtain a wavelet coefficient; carrying out noise reduction processing on the wavelet coefficient to obtain a denoised wavelet coefficient; extracting a wavelet ridge band on the constant-amplitude surface through an isoline method; fitting interpolation is carried out on the wavelet ridge band through a nearest neighbor method, then equalization processing is carried out, and a small-window time-frequency curve is obtained; and 2, superposing the time-frequency curves of the small windows to obtain a final time-frequency curve, identifying the instantaneous frequency of the inhaul cable, and calculating the instantaneous cable force. According to the method, response data are acquired through the non-contact microwave interference radar, long-time analysis is realized through a small window focusing analysis and multi-window superposition display mode, a wavelet ridge band is extracted through an isoline method, and the cable force identification precision is improved.

Description

Technical field [0001] The present invention relates to the field of bridge health detection, and more particularly to a transient silent recognition method, electronic device and medium based on wavelet and contour. Background technique [0002] In a larger cross-structural system such as a cable-stayed bridge, a suspension bridge, and arch bridge, cable is the main force component between the bridge and the tower. As a critical and relatively weak ring in the entire bridge system, the reliability of the secluded safety operation is directly related to whether the bridge can be used normally. The cable in the work is due to long-term endurance, which will cause the tired failure of the cable. Therefore, the ropes in the service can monitor the degree of fatigue damage of the cable, assess the healthy state of the cable, and help the safety level assessment, repair and maintenance and life prediction of the bridge. [0003] The existing Russo force recognition method mainly has p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/04G06K9/00
Inventor 蒋淑霞刘文王天鹏柳霞何泽江张长伟陈溢广
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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