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Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision

A technology of machine vision and fault monitoring, applied in the testing of machines/structural components, instruments, measuring devices, etc., can solve problems such as lack of objectivity and insufficient intelligence, and achieve the elimination of potential safety hazards, low requirements for the use environment, and mathematical Model Simple Effects

Active Publication Date: 2015-04-22
CENT SOUTH UNIV
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Problems solved by technology

[0004] At present, the solution to this kind of wire rope faults basically relies on manual observation, which lacks objectivity and is not intelligent enough.

Method used

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  • Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision
  • Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision
  • Method and system for monitoring rope arrangement faults of drum steel wire rope on basis of machine vision

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] Such as figure 2 As shown, a machine vision-based method for detecting faults in drum wire rope arrangement includes the following steps:

[0044] Step 1: Fix the industrial camera 8 on the back of the roll 9, and the roll is fixed on the installation base, such as Image 6 As shown, the imaging area of ​​the industrial camera covers the rope-laying area of ​​the drum wire rope;

[0045] Step 2: Calibrate the industrial camera to obtain the actual distance calibration parameters represented by the unit pixel of the industrial camera;

[0046] From the extracted pixel coordinates to the calculation of the actual center distance, the system needs to establish the image plane coordinate system and the actual coordinate system, such as image 3 As shown in , the geometric constraints corresponding to the two coordinates are solved by automatic ca...

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Abstract

The invention discloses a method and system for monitoring rope arrangement faults of a drum steel wire rope on the basis of machine vision. An industrial camera is arranged on the back surface of a drum, the automatic calibration of internal parameters of a vision system is finished by sampling static images of a designated marker, the industrial camera is used for performing continuous image sampling on the steel wire rope arranged on the drum, and the horizontal coordinates of the center point of the steel wire rope just wound on the drum in an image coordinate system are acquired by virtue of a corresponding image processing algorithm; according to the parameters obtained by the automatic calibration, the horizontal coordinates are converted into corresponding position coordinates in an actual coordinate system, so that the center distance between the steel wire rope just wound on the drum and an adjacent steel wire rope is calculated; and whether a fault happens is judged according to the center distance, and a fault signal is transmitted to a monitoring center to give an alarm. Whether the drum steel wire rope has rope arrangement faults is quantitatively judged by virtue of the industrial camera, the data processing and error analysis are simple and convenient, the reliability is high, and the practicability is strong.

Description

technical field [0001] The invention relates to an online real-time monitoring technology for faults of reel wire ropes at industrial sites, in particular to a machine vision-based method and system for fault monitoring of reel wire ropes. Background technique [0002] Mine hoisting equipment is the "throat equipment" connecting the ground and underground, and is responsible for lifting coal, ore, lowering materials, lifting personnel and equipment. With the advancement of science and technology and the continuous improvement of modernization requirements for mine production, new technologies are gradually introduced into hoisting equipment, especially technologies that help improve equipment operation safety and improve the information level of mine hoisting equipment, and are gradually applied. [0003] In addition to mine hoists, large tower cranes, winches, drilling rigs, etc. use motors to drive the reel to rotate and lift or lower heavy objects through wire ropes. Whe...

Claims

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Application Information

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IPC IPC(8): G01M99/00B66D1/54
Inventor 谭建平吴志鹏刘溯奇薛少华
Owner CENT SOUTH UNIV
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