Method for monitoring tower crane by utilizing high-speed photogrammetric technology

Abstract

The invention provides a method for monitoring a tower crane by utilizing high-speed photogrammetric technology. The method comprises the following steps: acquiring images in a cargo beam movement process of a standard crane tower by using a high-speed camera so as to form a monitoring image; computing a relationship between the cargo beam movement speed and an image matrix change coefficient in the adjacent image interval, and establishing a mathematical model; acquiring the cargo beam movement speed and the theoretical image matrix change coefficient in the interval between the first image and the second image in the carbo beam movement process of the current crane tower; computing the actual image matrix change coefficients of the current two images; and giving an alarm to a user side when the difference between the theoretical image matrix change coefficient and the actual image matrix change coefficient is greater than a predetermined threshold. The cargo beam movement image is shot through the high-speed photogrammetric technology, and the image parameters are modelled and monitored, thereby monitoring the state of the crane tower when the cargo beam moves, and improving thesecurity of the crane tower.

Description

technical field [0001] The invention relates to construction equipment, in particular to a method for monitoring tower cranes using high-speed photogrammetry technology. Background technique [0002] In order to strengthen the safety management of tower cranes at the construction site and reduce the occurrence of safety accidents, safety inspections are required when using tower cranes to ensure the safe use of tower cranes. [0003] In the prior art, the safety inspection of the tower crane is carried out by the security inspectors by observing each component and connection, and it is easy to ignore the micro-deformation or structural cracks of the tower crane, but during the hoisting process of the tower crane, the security inspectors The deformation of the boom structure and the deviation of the hoisting trajectory during hoisting cannot be found through observation. Therefore, during the hoisting process, the security inspectors cannot discover the potential safety haza...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the safety inspection of tower cranes is carried out by security inspectors by observing each component and connection, and it is easy to ignore the micro-deformation or structural cracks of tower cranes, but during the hoisting process of tower cranes, security inspectors The deformation of the boom structure and the deviation of the hoisting trajectory during hoisting cannot be found through observation

Therefore, during the hoisting process, the security inspectors cannot discover the potential safety hazards of the tower crane in time, and cannot take measures in time, resulting in safety accidents

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