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De-noising algorithm of laser range finding signals of power transmission circuit based on improved EEMD

A technology of laser distance measurement and power transmission line, which is applied in the direction of radio wave measurement system, measurement device, electromagnetic wave reradiation, etc., can solve the problems of difficult selection of adaptive filter parameters and unsatisfactory adaptive filter algorithm, etc. Effects of modal aliasing, improving operation efficiency, and improving operation efficiency

Inactive Publication Date: 2018-01-19
STATE GRID CORP OF CHINA +1
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Problems solved by technology

However, the parameter selection of the adaptive filter is difficult, and for the denoising of non-stationary signals, the adaptive filtering algorithm is not ideal

Method used

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  • De-noising algorithm of laser range finding signals of power transmission circuit based on improved EEMD
  • De-noising algorithm of laser range finding signals of power transmission circuit based on improved EEMD
  • De-noising algorithm of laser range finding signals of power transmission circuit based on improved EEMD

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Embodiment Construction

[0048] Hereinafter, the present invention will be further described in detail through specific embodiments in conjunction with the drawings.

[0049] This example proposes a denoising algorithm for transmission line laser ranging signals based on improved EEMD. The flowchart is as follows figure 1 As shown, including the following steps:

[0050] S100: Establish a laser ranging signal acquisition system for transmission lines, such as figure 2 Shown. The laboratory simulation samples data of targets that may affect the transmission line to obtain the laser ranging signal of the transmission line.

[0051] The laser ranging system designed by this method is composed of three modules, namely the transmitting module, the receiving module and the data processing control module. Among them, the transmitting module is mainly composed of a driving circuit and a laser transmitter, and its main function is to transmit a certain frequency of laser signals that are harmless to people; the rec...

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Abstract

The invention provides a de-noising algorithm of laser range finding signals of a power transmission circuit based on the improved EEMD. Filtering analysis and de-noising processing carried out on noise-containing laser range finding signals of the power transmission circuit can be effectively achieved. The method comprises steps of firstly establishing a power transmission circuit laser range finding signal acquisition system; carrying out rapid EEMD decomposition on the power transmission circuit laser range finding signals obtained through the experiment so as to obtain a series of intrinsic mode functions IMFs; then, selecting different numbers of IMFs to carry out adaptive filtering de-noising according to different noise forms; and finally, adding the de-noised IMFs so as to reconstruct the expected power transmission circuit laser range finding signals. An experiment result proves that by use of the method, noise in the power transmission circuit laser range finding signals canbe effectively reduced; rapid and precise range finding can be performed on targets influencing operation of the power transmission circuit; and safety and stability of the operation of the power transmission circuit are improved.

Description

Technical field [0001] The invention relates to the field of laser ranging for power transmission lines, and in particular to an improved EEMD-based signal denoising algorithm for laser ranging for power transmission lines. Background technique [0002] The safe and reliable operation of transmission lines is of great significance to the development of the national economy. However, most of the transmission lines are erected in hills, mountains and other areas. During the annual tree growth period, line tripping accidents caused by tree barriers with insufficient safety distances in the transmission line corridors occur from time to time, posing a great threat to the safe operation of the lines. Such accidents have occurred both at home and abroad, and some of the incidents have serious consequences, causing a lot of economic losses. At present, power departments basically rely on manual line inspections for line safety protection, but line inspections have high intensity, low e...

Claims

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Application Information

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IPC IPC(8): G01R31/08G01S17/10G01S7/48
Inventor 高晓东韩正新郑连勇毕斌乔耀华李冰冰袁杰徐元超冯迎春张民张君王大鹏李敏李永明
Owner STATE GRID CORP OF CHINA
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