Detecting system and detection method for overall dimension of underwater part of ship

A technology for underwater parts and outline dimensions, applied in the direction of measuring devices, instruments, and optical devices, can solve the problems of inability to disembark, accurate and fast inspection, complex detection system, and high construction difficulty, and achieve simple structure, Easy to operate and reduce the difficulty of construction

Active Publication Date: 2012-07-11
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, the current measurement method is greatly affected by the subjective influence of the surveyors. During the inspection, the detection equipment must be on board or enter the bottom of the water for detection. The detection system is complicated, the construction is difficult, and the operation is inconvenient.

Method used

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  • Detecting system and detection method for overall dimension of underwater part of ship
  • Detecting system and detection method for overall dimension of underwater part of ship
  • Detecting system and detection method for overall dimension of underwater part of ship

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Embodiment Construction

[0038] Best practice:

[0039] Refer to attached figure 1 And attached figure 2 , an image processing-based detection system for the outline size of the underwater part of a ship, including an underwater laser scanning device 1 , an underwater photographing device, an image processing subsystem 3 , a lifting device 4 and a transmission cable 5 .

[0040] Wherein, the underwater shooting device includes two 8 million pixel CCD cameras 21,22. A CCD camera is used to photograph the laser lighting lines on the underwater hull at different angles. Both the CCD camera and the laser scanning device are placed on the horizontal support 41 at the same underwater depth. And the CCD cameras are located on both sides of the laser scanning device, and the distance from the laser scanning device 1 is 1 meter.

[0041]The lifting device 4 includes a horizontal support 41 , a vertical guide rail 42 and a transmission motor 43 . The horizontal support 41 is used to place the underwater l...

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Abstract

The invention relates to an overall imaging technology of an underwater object and particularly relates to a detecting system and a detection method for the overall dimension of an underwater part of a ship. According to the detection system and the detection method, an image processing method for combining a laser technology with a shooting technology is applied; the underwater part of a ship body is scanned by adopting a laser beam to form a laser illumination line; the underwater shooting device is used for acquiring image scanning information; and image data are processed and three-dimensional outline information of the ship body is calculated by adopting an arithmetic algorithm. The detection system disclosed by the invention is low in construction difficulty; the process of the detection method is controlled by adopting full automation without being influenced by subjectivity of a measurer; during detection, the equipment is not needed to be carried on the ship or enter the water bottom; the measuring system is simple in structure and is convenient and quick in operation; and a measuring result is accurate and stable and important reference for smooth navigation and the safety of persons, the equipment, the ship and a channel is provided.

Description

technical field [0001] The invention relates to an underwater object shape imaging technology, in particular to a ship underwater part outline size detection system and a detection method thereof, which adopts an image processing method based on the combination of laser technology and camera technology. Background technique [0002] The underwater part of a ship refers to the part of the hull submerged in water. For the shipping management department, if the outline size of the underwater part of the ship can be accurately grasped, the ship's stable height, swing period, left and right trim, and heel angle can be calculated by combining the change data of channel water depth and water flow with the cargo loading situation , trim angle and other important stability parameters, and then according to the terrain data of the lock chamber or the ship lift box, reasonably arrange the navigation lock times and the berths in the ship lock (or ship box), so as to ensure smooth naviga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
Inventor 王昕庄明颜艺峰鄢荣玲李宇胜郑杰戴在光吴慧峰黄其捷华林王静怡刘志强
Owner STATE GRID CORP OF CHINA
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