Crack multiple-parameter observation device based on close-range photogrammetry

Abstract

The invention discloses a crack multiple-parameter observation device based on close-range photogrammetry. The crack multiple-parameter observation device comprises an image collection module used for acquiring conditions of cracks to generate crack images; a position determining module used for determining positions of the cracks and marking the positions on the crack images to generate marked images; an image processing module used for analyzing the crack images to generate crack parameters and marking the crack parameters on the marked images to generate result images, and a memory module used for storing the crack images and the result images. The crack multiple-parameter observation device enables crack observation data to be more accurate, higher in reliability and convenient to operate so as to effectively improve the crack observation efficiency.

Description

technical field [0001] The invention relates to the field of crack observation, in particular to a multi-parameter crack observation device based on close-range photogrammetry. Background technique [0002] The professional monitoring of geological disasters includes geometric deformation monitoring, influencing factor monitoring, and stress-strain monitoring. Among them, the development of ground fissures can reflect the macroscopic deformation of deformed bodies, which is the key content of geometric deformation monitoring of geological disasters, and provides important information for geological disaster monitoring and early warning. data support. [0003] Building (structure) deformation monitoring and quality inspection include plane displacement monitoring, vertical displacement monitoring, tilt (perpendicularity) monitoring, crack monitoring, stress and strain monitoring, structural integrity, material force testing, etc. The development of structural cracks not only...

AI Technical Summary

Problems solved by technology

[0006] 1. The monitoring parameters are single. At present, this type of equipment focuses on the observation of crack width parameters;

[0007] 2. The degree of automation is low, and the boundaries between indoor and outdoor working hours are obvious

Since technicians need to regularly arrive at the monitoring point for manual operation and recording, and then organize and analyze the observation data internally, the monitoring efficiency is relatively low;

[0008] 3. The pre-embedding of equipment or the pre-establishment of observation signs have higher requirements

In order to ensure the observation accuracy, the burial of the joint gauge must be strictly installed and carried out. When using a crack width gauge or a reading microscope, an obvious observation mark must be established. Once the observation mark is damaged, the monitoring data sequence will be interrupted;

[0009] 4. It is difficult to guarantee the accuracy of the observation data

Since the above-mentioned observation equipment or observation methods are greatly affected by human factors, the multi-period observation data is poor or even exceeds the real deformation

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