Bridge cable appearance detecting method

A cable appearance inspection and appearance inspection technology, which is applied in measuring devices, image data processing, instruments, etc., can solve problems such as difficulty in adapting to cable inspection, high equipment cost, great differences in cable angle, diameter, and environment, etc.

Active Publication Date: 2016-02-24
HUNAN TUODA COMPOSITION MONITORING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mechanical structure is complex, the equipment cost is high, it is not easy to operate, the equipment cost is high, the detection time is long, and the angle, diameter, environment, etc. of different types of bridge cables are very different. It is difficult for a set of equipment to adapt to the detection of all cables. Testing equipment has not been put into use on a large scale

Method used

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0051] (1) HD image acquisition platform

[0052] The image acquisition platform includes a tripod 4 and an acquisition platform, the acquisition platform includes a first frame 6 and a second frame 1, the first frame 6 is connected to the top of the tripod 4 by a vertically arranged rotating shaft 8, and the second A frame 6 can rotate axially around the rotating shaft 8, and the two sides of the second frame 1 are respectively connected with the two sides of the first frame 6 by a rotating shaft 7, and the second frame 1 can be rotated by two The connecting line of the shafts 7 is the rotation of the central axis; the camera 2 and the lens 3 are installed on the second frame 1 , and the center horizontal line of the camera 2 is in the same plane as the two rotation shafts 7 .

[0053] The main function of the high-definition image acquisition platform is: first, c...

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Abstract

The invention discloses a bridge cable appearance detecting method. According to the method, a structure image is subjected to matrix splicing and image straightening in sequence, so as to realize one-one correspondence between the coordinate of the image pixel and the coordinate of an actual CAD drawing; a structure high-definition map is formed, and is subjected to defect measurement, positioning, labeling, classification, statistics and the like. The method has the advantages that not only can defect information on the surface of a bridge cable obtained, but also the precision and the objectivity of the detection are ensured, the sub-millimeter scale defects can be observed, and the actual engineering requirements are met.

Description

technical field [0001] The invention relates to a method for detecting the appearance of bridge cables. Background technique [0002] Suspension bridges, cable-stayed bridges and arch bridges are the main structural forms of long-span bridges, among which the cables are very important structural stress components and play an important role in transferring loads. There are bridges such as Yibin Xiaonanmen Bridge and Qijiang County Rainbow Bridge in China. It is a major accident of the bridge collapse caused by the breakage of the cable (suspension rod). Therefore, bridge cables play an important role in the safety of bridge structures. [0003] Cable inspection is a very important daily work. At present, daily inspections are mainly through telescopes; regular inspections use hoists to pull steel wire ropes to lift the hanging basket, and inspectors inspect the cables in the hanging basket, which is low in efficiency, high in cost, and low in safety. [0004] Aiming at the...

Claims

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Application Information

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IPC IPC(8): G01N21/952G06T3/00G06T7/00
CPCG06T7/0008G01N21/952G01N2021/8861G01N2021/8874G01N2021/887G01N2021/888G01N2021/8887G01N2201/103G06T2207/30132G06T2207/10016G06T3/14
Inventor 谢海波刘晏玲王培玉
Owner HUNAN TUODA COMPOSITION MONITORING TECH CO LTD
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