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Signal extraction method and device capable of resisting interference of rat repeller

A signal extraction and anti-mouse repellent technology, applied in the field of signal processing, can solve the problem of inability to effectively separate the interference components of the discharge and the mouse repellent, and achieve the effect of avoiding the mode aliasing problem

Active Publication Date: 2021-12-24
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, there is no relevant technology in the existing technology to extract the anti-mouse repellent interference signal. On the other hand, although there is a decomposition of the signal, it is impossible to effectively separate the interference components of the discharge and the mouse repellent and the existing mode aliasing problem

Method used

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  • Signal extraction method and device capable of resisting interference of rat repeller
  • Signal extraction method and device capable of resisting interference of rat repeller
  • Signal extraction method and device capable of resisting interference of rat repeller

Examples

Experimental program
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Effect test

Embodiment 1

[0055] figure 1 It is a flow chart of a signal extraction method for anti-mouse repellent interference in this embodiment, and the present invention provides a signal extraction method for anti-mouse repellent interference, including:

[0056] Step S1: Acquiring the original partial discharge ultrasonic signal including the anti-mouse device interference;

[0057] Step S2: carry out ensemble empirical mode (EEMD) decomposition to the original partial discharge ultrasonic signal containing anti-mouse device interference to obtain each intrinsic mode function (IMF) component;

[0058]Specifically include the following steps:

[0059] Step S201: Carry out N times of noise addition to the original partial discharge ultrasonic signal f(t) to obtain the original partial discharge ultrasonic signal F containing anti-mouse device interference i (t), the formula is:

[0060] f i (t)=f(t)+noise_i(i=1,2,...,N)

[0061] Among them, noise_i is Gaussian white noise.

[0062] Step S202...

Embodiment 2

[0094] This embodiment provides a signal extraction device based on a kind of anti-mouse repellent interference, which is realized by the following technical solutions:

[0095] The signal acquisition module is configured to: acquire the original partial discharge ultrasonic signal including anti-mouse interference;

[0096] The signal decomposing module is configured to: carry out ensemble empirical mode (EEMD) decomposition to the original partial discharge ultrasonic signal that contains anti-mouse device interference to obtain each intrinsic mode function (IMF) component;

[0097] The anti-interference signal extraction module is configured to: carry out pattern recognition to the anti-interference signal to the discharge component and the rat repeller interference component according to each intrinsic mode function (IMF) component and the trained SVM model.

Embodiment 3

[0099] The implementation mode of this specification provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the anti-drive The steps of the signal extraction method for mouse interference.

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Abstract

The invention provides a signal extraction method and system for resisting interference of a mouse repeller. The method comprises the following steps: acquiring an original partial discharge ultrasonic signal containing interference of the mouse repeller; carrying out ensemble empirical mode decomposition on the original partial discharge ultrasonic signal containing anti-mouse interference to obtain each intrinsic mode function component; according to each intrinsic mode function component and the trained SVM model, performing mode recognition on the discharge component and the deratization device interference component to obtain an anti-interference signal, so the characteristic difference between the discharge signal and the deratization device interference can be effectively reflected, and the anti-deratization device interference signal finally obtained by the algorithm has the advantages of obvious power frequency periodicity and high signal-to-noise ratio.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a signal extraction method and device for anti-mouse repeller interference. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Defect diagnosis and discharge location based on partial discharge ultrasonic signals require that the signal data collected on site can reflect the discharge information as truly as possible, but the actual detected ultrasonic signals are often affected by serious interference from mouse repellers. Interference has very important engineering significance for partial discharge ultrasonic signal detection. [0004] The partial discharge ultrasonic signal itself has power frequency periodicity. Compared with the strong randomness and irregular rat repeller interference, the discharge signal behaves mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06F2218/08G06F2218/12G06F18/214G06F18/2411
Inventor 林颖辜超刘萌白德盟李杰杨祎李程启郑文杰徐冉李壮壮张峰达高建峰王平
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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