Abstract
As buildings wear out, external wall tiles or attachments will usually fall off, sometimes causing human injuries. At present, the method employed for middle-high rise buildings is mainly the method of visual inspection. The inspection results in using this method are affected by the factors of subjectivity, safety and cost. This study aims to provide a lowercost and more efficient evaluation method for inspecting the status of buildings’ external walls. This proposed method implements Forward Looking Infrared (FLIR) technology and high-resolution photographic equipment on Unmanned Aerial Vehicle (UAV) which can improve the image recording of the detection process, as well as the overall visual detection technology, and solve the existing visual detection problem of inspectors. Also, the images detected by visual inspection and UAV high-resolution video are used to develop a suitable visual evaluation process and test table for external walls. Through the test results of several cases, the deterioration status and needs for maintenance are taken into account according to the degree of performance indicators. The findings of the study is that the proposed mechanism is more efficient and lower cost for the detection of external walls or ancillary structures’ abnormal status, which is easy to use in practice.
Highlights
As buildings wear out, external wall tiles or attachments will usually fall off, sometimes causing human injuries
This study mainly aims to propose a modified inspection method of external wall that combines Unmanned Aerial Vehicle (UAV) with infrared thermal imager (FLIR, model C2) thermal imaging recording, and case studies to explore the applicability of the proposed method; expert interviews are conducted to improve the application of the detection technology
The conclusions are listed as follows: 1. This study presents an improved way that combines the visual inspection method, infrared detection technology, UAV real-time detection, and grading method for evaluating the status of exterior walls for maintenance
Summary
External wall tiles or attachments will usually fall off, sometimes causing human injuries. While telescopes are often used for detection, their effectiveness is limited by height and angle, and inspectors cannot make clear judgments when they are standing atop the building and looking downwards. These techniques for external wall detection have their respective strengths and weaknesses. This study aims to provide a lower-cost and more efficient evaluation method for inspecting the status of buildings’ external walls This method is widely used; it mainly implements Forward Looking Infrared (FLIR) technology and high-resolution photographic equipment on Unmanned Aerial Vehicle (UAV). Its stability can improve the image recording of the detection process, as well as the overall visual detection technology, and solve the existing visual detection problem of inspectors unable to view from top to bottom at certain angles or when there are shelters
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