Vibration signal feature extraction method and device, storage medium and computer equipment

A vibration signal and feature extraction technology, applied in the field of signal analysis, can solve problems such as low accuracy

Inactive Publication Date: 2018-06-29
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to address the problem of low accuracy of traditional vibration signal feature extraction, and provide a

Method used

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  • Vibration signal feature extraction method and device, storage medium and computer equipment
  • Vibration signal feature extraction method and device, storage medium and computer equipment
  • Vibration signal feature extraction method and device, storage medium and computer equipment

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Experimental program
Comparison scheme
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Embodiment Construction

[0030] refer to figure 1 , the vibration signal feature extraction method in an embodiment includes the following steps:

[0031] S110: Collect the vibration signal of the target device.

[0032] The target device is a device that can generate vibration signals and needs to analyze the operating status according to the vibration signals. For example, the target device can be an on-load tap-changer in a power transformer.

[0033] S130: Perform noise reduction processing on the vibration signal to obtain a noise reduction signal.

[0034] The vibration signals collected on site often contain noise, which will affect the effect of feature extraction. By performing noise reduction processing on the vibration signals, the noise reduction signal obtained is the signal after denoising.

[0035] S150: Perform empirical mode decomposition on the noise reduction signal to obtain an original eigenmode function corresponding to the noise reduction signal.

[0036] The collected vibra...

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Abstract

The invention relates to a vibration signal feature extraction method and device, a storage medium and computer equipment. The vibration signal feature extraction method comprises the following steps:collecting a vibration signal of target equipment; carrying out noise reduction on the vibration signal, so as to obtain a noise reduction signal; carrying out empirical mode decomposition on the noise reduction signal, so as to obtain an original intrinsic mode function corresponding to the noise reduction signal; acquiring a superposed signal according to the original intrinsic mode function corresponding to the noise reduction signal, and carrying out empirical mode decomposition and superposition removal on the superposed signal, so as to obtain a final intrinsic mode function corresponding to the noise reduction signal; and carrying out Hilbert-Huang transformation on the final intrinsic mode function, so as to obtain a spectrum signature of the vibration signal. According to the vibration signal feature extraction method, the feature extraction accuracy can be increased, and extracted features can well represent the operation states of the target equipment.

Description

technical field [0001] The present invention relates to the technical field of signal analysis, and in particular, to a method, device, storage medium and computer equipment for extracting characteristics of vibration signals. Background technique [0002] The vibration signal is a signal caused by the mechanical vibration of the equipment. The characteristics of the vibration signal can reflect the mechanical movement of the equipment. Therefore, extracting the characteristics of the vibration signal for analysis can help to understand the operating status of the equipment and find hidden faults as soon as possible. For example, the on-load tap-changer is the only movable part in the power transformer, and its operating state is directly related to the safe and reliable operation of the entire power grid; extracting the characteristics of the on-load tap-changer vibration signal can accurately analyze the on-load tap-changer operation status, so as to detect the hidden trou...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06F2218/04G06F2218/08
Inventor 熊俊莫文雄杨森陈莎莎刘宇钟少泉田妍吉旺威林艺郑服利何昊杜钢
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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