Pole tower deformation detection method with constraint registration

Abstract

The invention discloses a pole tower deformation detection method with constraint registration. The method includes steps: acquiring original three-dimensional point cloud data of an original pole tower; acquiring state three-dimensional point cloud data of a to-be-detected stage pole tower; denoising, and extracting axis of the pole tower; performing initial registration and fine registration; measuring an included angle between axis of the original pole tower and deviation state axis of the pole tower to acquire an inclination angle of the pole tower; calculating Eucidean distance from each spatial point on the deviated pole tower to the original pole tower, calculating Hausdorff distance between two denoised point cloud data after going through fine registration, and taking a ratio of the Eucidean distance to the Hausdorff distance as deviation amount of the pole tower; converting the deviation amount into a visual gray value to acquire a pole tower deformation deviation cloud chart. By the method, effective analysis of overall deformation of the pole tower is realized to directly acquire deformation degree of the pole tower in three-dimensional space; the method is high in detection accuracy and efficiency, low in cost, free of influence by outside environment and convenient to operate.

Description

technical field [0001] The invention relates to a deformation detection method, in particular to a tower deformation detection method with constrained registration, and belongs to the technical field of deformation detection. Background technique [0002] With the advancement of science and technology and the modernization of society, people's quality of life and demand continue to improve, and power consumption has also increased significantly, which puts forward higher and higher requirements for the safety and reliability of power grid power supply. The transmission and distribution of electric power is inseparable from overhead high-voltage transmission lines. High-voltage overhead towers and transmission cables are widely distributed. The quality of their work and operation determines the safety and efficiency of the power system. As it grows longer, the tower is affected by natural factors such as wind, frost, rain and snow, and human factors such as various undergroun...

AI Technical Summary

Problems solved by technology

As it grows longer, the tower is affected by natural factors such as wind, frost, rain and snow, and human factors such as various underground goafs caused by mineral mining in recent years. The light ones may cause cracking, tilting, and tower deformation, and the severe ones may cause the tower to topple. , collapse, which will pose a great threat to the safe operation of the transmission network and cause losses to people's lives and property

[0003] For a long time in the past, the main method of tower deformation detection in my country is manual visual inspection, which consumes a lot of manpower and material resources, and manual inspection is prone to problems such as negligent detection, neglect of defects, and large deviations.

At present, some detection methods using electrical devices or sensors have also appeared. Although the detection accuracy has been greatly improved, for many large-scale detection operations of the deformation degree of towers, there are still problems with low efficiency and device installation. High maintenance costs and potential safety hazards

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