Outdoor structure vibration displacement automatic monitoring method based on computer vision
A technology of computer vision and structural vibration, applied in computing, image analysis, image enhancement, etc., can solve the problems that monocular vision algorithms cannot be measured by rotation measurement, limited scope of application, cumbersome operation, etc., and achieve simple layout, low cost, Solve the effect of lack of precision
Active Publication Date: 2021-08-10
ZHEJIANG UNIV
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Problems solved by technology
[0011] The purpose of the present invention is to solve the problems of limited application range, high cost and cumbersome operation of traditional sensors in outdoor structural displacement monitoring, and to solve the problem that the current traditional monocular vision algorithm cannot be used for rotation measurement and measurement in harsh environments and other problems, providing an automatic monitoring method for outdoor structure vibration displacement based on computer vision
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[0040] The present invention will be described in further detail with reference to the flowchart and accompanying drawings.
[0041] figure 1 The on-site test schematic diagram of the automatic monitoring method for vibration displacement of outdoor structures based on computer vision provided by the present invention, the specific implementation includes the following steps:
[0042] (1) Select the marker as the monitoring target, prepare 5000 images of the marker in advance to train the convolutional neuron network (CNN) to obtain the network weight; prepare 500 pairs of clear marker images and the same marker with blurred parts in advance The image trains the Generative Adversarial Network (GAN) to get the weights of the network.
[0043] (2) if figure 1 As shown, the camera ④ is placed far away from the outdoor building ① to ensure that the camera can capture the monitoring target point ② on the surface of the building and its vibration displacement plane;
[0044] (3) ...
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The invention provides an outdoor structure vibration displacement automatic monitoring method based on computer vision, and the method has the following advantages that: (1) compared with a traditional displacement monitoring method, the defects that errors are possibly caused when a differential pressure sensor, a liquid level meter, a laser displacement meter and the like are used for measuring structural vibration displacement, the measuring distance is limited, the measuring point is single, and operation is complex are overcome; (2) compared with a binocular and multi-view computer vision system, the method has the characteristics of simple arrangement, high robustness, high efficiency, convenience and low cost, and has higher applicability in an outdoor structure vibration displacement monitoring scene; (3) the monitoring range is wide, the monitoring visual angle is large, the requirement of flexibly arranging the camera outdoors can be met, and the method is suitable for monitoring the rotating condition of a target; and (4) image deblurring is realized, the problem that the precision is insufficient due to the influence of image blurring in outdoor structure vibration monitoring of the existing monitoring algorithm is solved, and the outdoor structure vibration displacement-time relation curve can be accurately obtained in real time.
Description
technical field [0001] The invention relates to an automatic monitoring method for vibration displacement of outdoor structures based on computer vision. Background technique [0002] Structural health monitoring is the process of detecting various structural damages, tracking the operating status and evaluating the status, which is of great significance for the applicability and safety assessment of structures. Structural damage in the field of civil engineering includes local damage and overall damage. The overall damage can be described by the displacement response of key parts of the structure. Therefore, health monitoring at the overall level of the structure is often achieved by monitoring the displacement response. [0003] For high-rise buildings, the vertical movement is small and the horizontal displacement response of the top is the most severe after vibration; for long-span bridges or space structures, the axial movement is small and the mid-span vertical vibrati...
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IPC IPC(8): G06T7/80G06T7/73G06T5/00
CPCG06T7/80G06T7/73G06T2207/20081G06T2207/20084G06T5/73
Inventor 张柏岩黄铭枫楼文娟李先哲
Owner ZHEJIANG UNIV