Method and system for detecting house facade hollowing through unmanned aerial vehicle

Abstract

The invention discloses a method and system for detecting house facade hollowing through an unmanned aerial vehicle. The method comprises the following steps of a space coordinate system being established; selecting a detection point; detecting parameters; preliminary comparison; performing accurate shooting; comparing again; empty drum confirmation. According to the method for detecting the hollowing of the outer vertical surface of the house through the unmanned aerial vehicle, 1, the unmanned aerial vehicle is controlled to replace manpower to shoot the exterior of the house, so house detection difficulty is greatly reduced, and meanwhile, detection precision and detection efficiency can also be improved; 2, the shot house three-dimensional image is compared with house external data, so that the error occurrence position can be quickly obtained, the error occurrence position can be conveniently obtained, and the manual troubleshooting range is reduced; and 4, the obtained accurate three-dimensional image is compared with a common object image in a database, so the investigation range can be further expanded, and investigation difficulty and workload are improved.

Description

technical field [0001] The invention relates to the technical field of hollow drum detection, in particular to a method and system for detecting hollow drums on house facades by means of unmanned aerial vehicles. Background technique [0002] More and more houses have been built in our country. Since 2007, the country began to promote the external wall insulation system to achieve the effect of building energy saving and heat preservation. At present, the design service life of building structures in my country is generally 50 years, while the design service life of external wall insulation is only 25 years. Due to the short promotion and use of external wall insulation, there are few related studies, and the construction quality is difficult to guarantee. In recent years, quality problems such as cracking, falling off, water seepage, and decline in thermal insulation performance have occurred in external wall insulation systems in various places. demand is increasing. [...

AI Technical Summary

Problems solved by technology

[0011] (2) The shooting angle of the camera is limited, (the angle with the wall should not be greater than 40°, otherwise the photo will be invalid), and the actual shooting requires the mobile phone camera to be as vertical as possible to the wall, which brings great inconvenience to the shooting work. When shooting for high-rise buildings, it is necessary to go to the opposite building to shoot, which consumes the time of the photographer, and the shooting distance will also affect the shooting effect;

[0012] (3) Parts, such as roof inspection, require personnel to climb high for exploration, which increases the risk of personnel injury, and accidents occur from time to time;

[0013] (4) The number of exploration experts is limited, and on-site exploration requires experts to travel all over the country. The existing personnel cannot meet the increasing detection tasks across the country, and the efficiency is low;

[0014] (5) After experts confirm the problem points, it is often necessary to manually go to the site to confirm the suspected problem points again, so as to finally determine the problem points, and it is impossible to achieve the integration of intelligent survey and intelligent review. Method and system for human-machine detection of empty drums on house facades

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