Component defect monitoring and prediction system based on TLS (Terrestrial Laser Scanning)

Abstract

The application provides a structure health monitoring and intelligent-prediction method based on TLS (Terrestrial Laser Scanning) technology. The method includes: acquiring point cloud data of each area of an external structure of a component, and preprocessing the obtained point cloud data; further processing the point cloud data to obtain a complete three-dimensional model and deformation and crack data, and then carrying out finite-element analysis on the initial model to obtain material deformation and crack results; reconstructing a finite-element model according to corrected parameters,analyzing structure deformation and crack situations, and comparing the deformation and crack results of the finite-element model with the point cloud data to obtain a numerical-value comparison result; and utilizing the reconstructed finite-element model to intelligently predict future deformation situations of the structure, carrying out risk analysis, and giving a risk analysis report. According to the method, detection time of the external structure of the component can be shortened, and accuracy of a defect change trend of the component can be improved.

Description

technical field [0001] The present application relates to the technical field of measurement, especially the technical field of defect monitoring, and specifically relates to a TLS-based component defect monitoring and prediction system and a TLS-based component defect monitoring and prediction method. Background technique [0002] Due to the differences in geological conditions, underground facilities, subway transportation conditions and requirements, and regulatory requirements between domestic and foreign countries, the application of 3D laser scanning technology in China requires a large number of independently developed software and software that are suitable for China's national conditions and application needs. Only with supporting hardware can it be possible to exert the technological level and function that the technology should have. Traditional detection methods mainly include total station, GPSRTK technology and so on. When the total station locates the coordin...

AI Technical Summary

Problems solved by technology

Although CAD and CAE software such as CATIA and Pro / E can reversely model the point cloud obtained by detection, it needs to manually extract the feature points and feature lines to generate the model, which consumes a lot of manpower and time; therefore, an automated Model reconstruction technology, so that the actual model and prediction model of the external structure of the component can be constructed in time to avoid various safety hazards

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