Active-omni-directional-vision-based pipeline inside functional defect detection device and detection method

An active panorama and defect detection technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as low level of automation and intelligence, and difficulty in three-dimensional modeling of the inner side wall of the pipeline

Active Publication Date: 2015-04-29
ZHEJIANG UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0007] In order to overcome the shortcomings of the existing CCTV method, such as the low level of automation and intelligence, the difficulty in performing high-precision automatic analysis and evaluation of functional and structural defects in the pipeline, and the difficulty in three-dimensional modeling of the inner side wall of the pipeline, etc., the p

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  • Active-omni-directional-vision-based pipeline inside functional defect detection device and detection method
  • Active-omni-directional-vision-based pipeline inside functional defect detection device and detection method

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Embodiment 1

[0111] refer to Figure 1-9 , a device and method for qualitative and quantitative detection of functional defects and structural defects in pipelines based on active panoramic vision, its hardware includes: camera crawling system, control cable and core operating system for detection and analysis: The panoramic vision sensor is advanced to the inside of the pipeline, and the active panoramic vision sensor captures the panoramic image inside the pipeline and the laser scanning section slice image, and transmits the image to the console in a timely manner; the control cable is responsible for transmitting the crawling equipment instructions and real-time panoramic image data in the pipeline; The detection and analysis core operating system is responsible for issuing control commands, such as crawling system forward, backward, camera system lighting, etc.; accepts image data and processes the image data, and finally stores the image data and analysis results to the storage device...

Embodiment 2

[0256] In this embodiment, the rest of the implementations are similar, the difference is that the camera crawling system has multiple modes of wheel type, foot type, crawling type, peristaltic type and crawler type according to the situation of the pipeline.

Embodiment 3

[0258] In this embodiment, other implementations are similar, the difference is that the camera crawling system adjusts the installation height of the fixed active panoramic vision sensor according to the size of the pipe diameter, so that the axis of the active panoramic vision sensor and the axis of the pipeline The lines basically match.

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Abstract

The invention discloses an active-omni-directional-vision-based pipeline inside functional defect detection device. The active-omni-directional-vision-based pipeline inside functional defect detection device comprises a camera shooting creeping system, a control cable and a detection analysis core operating system, wherein the detection analysis core operating system comprises a coordinated action control unit, a creeping system control unit, an image receiving unit, a functional defect and structural defect qualitative and quantitative analysis judgment module and a storage unit; and a pipeline inside omni-directional image and a laser scanning cross section slice image are subjected to machine vision processing analysis and the functional defect and the structural defect of the pipeline can be recognized. The invention also discloses an active-omni-directional-vision-based pipeline inside functional defect detection method. A brand new automatic pipeline health checking method is provided and can provide effective technical support for underground pipeline maintenance and completion acceptance.

Description

technical field [0001] The present invention relates to the application of panoramic laser light source, omni-directional visual sensor, digital image processing and computer vision technology in the detection of pipelines, especially relates to the qualitative and quantitative analysis of internal functional defects and structural defects of pipelines based on active panoramic vision Detection device and method. Background technique [0002] At present, the detection technologies of pipelines mainly include the following technologies: magnetic flux leakage method, ultrasonic method, eddy current method, halo image method, ring optical section image method, PSD single point scanning method, CCTV method, omnidirectional detection method, endoscope detection method, etc. The most common detection tool used today is the pipeline closed-circuit television detection system, that is, the CCTV method, which is a tool specially applied to the detection of underground pipelines. Th...

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Application Information

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IPC IPC(8): G01N21/954
Inventor 汤一平吴挺鲁少辉陈麒韩旺明胡克钢王伟羊周伟敏韩国栋
Owner ZHEJIANG UNIV OF TECH
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