Double-CCD (Charge Coupled Device) detecting method and system for apparent defect assessment of civil engineering structure

Abstract

The invention provides a double-CCD (Charge Coupled Device) detecting method and equipment for apparent defect assessment of a civil engineering structure. The method comprises the following methods: a structure configuration method of the apparent defect double-CCD detecting system, a space coordinate calculating method of characteristic points of the double-CCD detecting method, a matching method of the image characteristic points of the structure apparent defect and an assessing method of the size of the structure apparent defect. The detecting system is composed of a double-CCD camera, a bracket, a double-path image collecting card, a computer and apparent defect detection assessing software, wherein the double-CCD camera is installed on the bracket and the double-CCD camera is connected to the double-path image collecting card through a lead wire; the double-path image collecting card is installed on the computer and the assessing software is used for controlling the system to realize collection, processing and assessment of the structure apparent defect images. In the invention, the system has the functions of carrying out synchronous collection by double-CCD, displaying andstoring images, matching characteristics, assessing defects and damages and providing a detection report. The system provided by the invention also has the advantages of real-time property of collection and rapidness in processing so that the system is suitable for the field measurement of the civil engineering structures.

Description

technical field [0001] The invention relates to the technical field of defect detection of civil engineering structures, in particular to a double-CCD detection method and system for evaluating apparent defects of civil engineering structures. Background technique [0002] Due to changes in the external environment and the influence of human errors, civil engineering structures will suffer various degrees of damage during service, while most of the defects of concrete structures originate or appear on the surface of the structure, such as cracks, holes, corrosion pits, Grooves, etc., reduce the safety, integrity and serviceability of the overall structure, affecting the normal use of the structure. The existence of these defects seriously threatens the safety and reliability of the structure, may lead to structural instability or strength damage, and seriously even affect the normal operation and benefit of the project. In order to ensure safe production, it is necessary to...

AI Technical Summary

Problems solved by technology

In this way, visual inspection can only roughly estimate the size range of cracks, but cannot obtain accurate results; moreover, due to the limitations of its own conditions, the visual inspection method has the disadvantages of limited detection ability, low detection reliability, long detection time, and high cost.

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