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Ship propulsion shafting vibration monitoring method, system and equipment and storage medium

A technology of vibration monitoring and storage media, which is applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as inconvenient maintenance and overhaul of shafting, increase difficulty of maintenance, and detect faults, etc., to achieve The effect of facilitating maintenance responses, simplifying data monitoring methods, and reducing rate requirements

Pending Publication Date: 2022-06-07
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special position of the bearing in the entire shafting system and the harsh environment, it is not convenient for maintenance personnel to maintain and overhaul the shafting system
In addition, when a small fault occurs in the bearing, it is difficult to detect the fault from the surface or through some detection equipment, which increases the difficulty of maintenance
[0003] Vibration monitoring of ship propulsion shafting bearings requires sufficient data for bearing condition monitoring. If the traditional sampling method is used to sample the bearing signal, it must follow the Nyquist sampling theorem, that is, the sampling frequency must be higher than two times the maximum frequency of the signal. Times, too high sampling rate will generate huge data, and bring huge pressure to back-end information transmission, storage and other links

Method used

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  • Ship propulsion shafting vibration monitoring method, system and equipment and storage medium
  • Ship propulsion shafting vibration monitoring method, system and equipment and storage medium
  • Ship propulsion shafting vibration monitoring method, system and equipment and storage medium

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Experimental program
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Embodiment approach

[0036] refer to figure 1 , the method for monitoring vibration of ship propulsion shafting based on compressive sensing according to the present invention comprises the following steps:

[0037] 1) Signal acquisition

[0038] The collected signals include the main engine speed, stern shaft speed, oil pressure, oil temperature and temperature signals of the ship's propulsion shafting, and the vibration acceleration signal of the ship's propulsion shafting bearing. The vibration acceleration signal of the ship's propulsion shafting bearing is based on the principle of compression sensing. Compressed and collected.

[0039] Let the vibration signal of ship propulsion shafting bearing be x∈R n , x has obvious sparsity in some special domains, x=ψθ, the vibration signal is obtained in the orthogonal basis matrix ψ=[ψ 1 , ψ 2 ,…,ψ n ], and at the same time, according to the characteristics of the collected signal, the sparsity k of the signal in the sparse domain is obtained; ...

Embodiment 2

[0063] The ship propulsion shafting vibration monitoring system according to the present invention includes:

[0064] The acquisition module is used to compress and collect the vibration acceleration signal of the ship's propulsion shafting bearing;

[0065] The reconstruction module is used to reconstruct the vibration acceleration signal of the ship's propulsion shafting bearing to obtain the reconstructed vibration acceleration signal;

[0066] The host computer is used to analyze the vibration acceleration signal obtained by reconstruction to complete the vibration monitoring of the ship's propulsion shafting.

Embodiment 3

[0068] A computer device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, the processor implements the method for monitoring vibration of the marine propulsion shafting when the processor executes the computer program A step of.

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Abstract

The invention discloses a ship propulsion shafting vibration monitoring method, system and device and a storage medium. The ship propulsion shafting vibration monitoring method comprises the steps that a vibration acceleration signal of a ship propulsion shafting bearing is compressed and collected; reconstructing the vibration acceleration signal of the ship propulsion shafting bearing to obtain a vibration acceleration signal obtained through reconstruction; the vibration acceleration signals obtained through reconstruction are analyzed, ship propulsion shafting vibration monitoring is completed, and the method, the system, the equipment and the storage medium can save the cost of data storage and transmission.

Description

technical field [0001] The invention belongs to the technical field of ship power plant safety monitoring, and relates to a method, system, equipment and storage medium for vibration monitoring of ship propulsion shafting. Background technique [0002] The ship's propulsion shafting is the heart of the ship. In the ship's propulsion shafting, the bearing is an important part of the ship's power plant system. Therefore, the stability of the bearing is of great significance to the safety of the ship. However, due to the special position of the bearing in the entire shaft system and the harsh environment, it is not convenient for maintenance personnel to maintain and repair the shaft system. In addition, it is difficult to detect the fault from the surface or through some testing equipment when the bearing has a small fault, which increases the difficulty of maintenance. [0003] The vibration monitoring of ship propulsion shafting bearings requires sufficient data for bearing...

Claims

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Application Information

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IPC IPC(8): G01M13/045G01M13/00G01H17/00
CPCG01M13/045G01M13/00G01H17/00Y02T90/00
Inventor 郭睿梁丽萍徐征杨众乔
Owner XIAN THERMAL POWER RES INST CO LTD
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