A method of construction progress monitoring based on UAV oblique photogrammetry technology

Abstract

The invention, which relates to the field of construction progress monitoring, provides a method for realizing construction progress monitoring based on an unmanned aerial vehicle oblique photogrammetry technology . The method comprises the following steps: S1, determining a construction task; S2, designing a route according to the construction task in the S1; S3, after completion of the airline design in the S2, determining whether the airspace application is approved or not; if not, returning to the S1; and if so, carrying out the S4; S4, arranging target points on the ground of a plant; S5,according to the arrangement of the target points in the S4, acquiring plant area images obliquely through an unmanned aerial vehicle; S6, carrying out aerial triangulation; S7, generating a true three-dimensional model; S8, after construction of the true three-dimensional model, comparing the actual construction progress witha planned construction progress to reflect progress deviation; and S9,predicting a later engineering progress trend. The method can vividly reflect the spatial form of a building and is easy to compare the construction progress deviation.

Description

technical field [0001] The invention relates to a method for monitoring construction progress, in particular to a method for monitoring construction progress based on unmanned aerial vehicle tilt photogrammetry technology. Background technique [0002] The construction of a power plant is generally divided into several stages such as "preliminary", "feasibility study", "start", "construction", and "commissioning". The most complicated management stage is the construction stage, where the construction progress is monitored, the progress deviation is discovered in time, the cause of the deviation and its impact on the follow-up work and the total construction period are analyzed, and corresponding measures are taken when necessary to ensure the realization of the progress goal. It is of great significance for construction progress monitoring. The current construction progress monitoring methods include: bar chart method, S-curve comparison method, banana curve comparison meth...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned patent documents use UAVs in the field of engineering progress monitoring, they do not use the data obtained by UAVs to establish a 3D real model, but directly compare with the planned construction progress, which cannot be seen intuitively and clearly. The difference between the actual construction progress and the planned construction progress is identified. The main purpose is to eliminate the need for on-site monitoring of the actual construction progress. However, the detection by drone photography still cannot realistically reflect the characteristics of the building changing with the construction progress in a three-dimensional form.

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