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A system and method for measuring the settlement and inclination angle of transmission towers based on optical measurement

A power transmission tower and optical measurement technology, applied in the field of optical measurement, can solve problems such as high labor intensity, low efficiency, and inability to make quantitative judgments

Active Publication Date: 2021-04-02
STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST +1
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  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a measurement system and method for transmission tower settlement and inclination angle based on optical measurement in order to solve the shortcomings of low efficiency, high labor intensity and inability to make quantitative judgments in the prior art

Method used

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  • A system and method for measuring the settlement and inclination angle of transmission towers based on optical measurement
  • A system and method for measuring the settlement and inclination angle of transmission towers based on optical measurement
  • A system and method for measuring the settlement and inclination angle of transmission towers based on optical measurement

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specific Embodiment approach 1

[0028] A measurement system for transmission tower settlement and inclination angle based on optical measurement in this embodiment, its composition includes:

[0029] The image acquisition module 1 is used to continuously acquire images of fixed markers 8 when the power transmission tower 6 does not settle and tilt, and the image acquisition module 1 is selected as a telephoto optical measurement camera;

[0030] An image pre-processing module 2, configured to filter the image of the fixed marker 8 collected by the image collection module 1;

[0031] The corner point extraction module 3 is used to perform corner point detection and corner point sub-pixel positioning on the image after the filtering process of the image preprocessing module 2, so as to obtain an accurate sub-pixel position of the corner point;

[0032] The translation matrix calculation module 4 is used to calculate the camera coordinate system through the establishment of the world coordinate system, the prec...

specific Embodiment approach 2

[0035] The difference from Embodiment 1 is that in this embodiment, a system for measuring the settlement and inclination angle of transmission towers based on optical measurement, when the image acquisition module 1 collects images of fixed markers 8, it is in the power transmission tower 6. When no subsidence or tilt occurs, n frames of images of the fixed marker 8 are collected continuously; the fixed marker 8 is a black and white checkerboard marker board.

specific Embodiment approach 3

[0037] The difference from Embodiment 1 or Embodiment 2 is that in this embodiment, a measurement system for transmission tower settlement and inclination angle based on optical measurement, when the image acquisition module 1 collects images of fixed markers 8, the telephoto The optical measurement camera is fixedly installed on the tower to collect images of fixed markers 8 set in geologically stable areas within 100 meters from the transmission tower 6 , wherein the fixed markers 8 are fixed on the ground by the fixing device 7 .

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Abstract

The invention discloses a system and a method for measuring the settlement and inclination angle of a transmission tower based on optical measurement, and relates to measurement methods for settlementand inclination angles of transmission towers, aiming to solve the defects of low efficiency, high labor intensity and inability to judge quantitatively in the prior art. The method includes preprocessing collected images of fixed landmarks; extracting corner points; calculating translation matrixes of a camera coordinate system and a world coordinate system according to the extracted corner point information; repeating the above steps until translation matrixes of images of all the fixed landmarks as well as the translation matrix increment are acquired; according to the translation matrix increment, determining the settlement displacement variation of the transmission tower in the world coordinate system to acquire the inclination angle of the transmission tower; giving out an alarm when the settlement displacement variation or the inclination angle of the transmission tower exceeds a set threshold value. The system and the method are applied to the field of measurement of the settlement and inclination angles of the transmission towers.

Description

technical field [0001] The invention relates to the field of optical measurement, in particular to a system and method for measuring the settlement and inclination angle of transmission towers based on optical measurement. Background technique [0002] With the rapid development of my country's national economy, the demand for electricity from all walks of life is increasing, and the State Grid is also increasing investment in the construction of electricity. When generating electricity, it often needs to bear the influence of harsh natural factors such as self-weight, wind, heavy rain, ice and snow, and also faces the threat of large-scale machinery and equipment working under iron towers or poles, and the operating conditions are very harsh. It is understood that the line trip rate caused by the inclination of transmission line towers in my country is higher than before. Once, the staff of the State Grid Tianjun County Power Supply Company found that the foundation of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00G01C9/00
CPCG01C5/00G01C9/00
Inventor 王孝余韩冰张彤王莹莹宋宜雷龙学军罗军
Owner STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST
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