Title:
GROOVE DEFECT DETECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/243992
Kind Code:
A1
Abstract:
Disclosed is a groove defect detection system for detecting a defect of an annular groove at an end portion of a tubular element. The system comprises: a visual assembly comprising an annular light source and a lens and a camera located behind the annular light source, wherein the annular light source illuminates the groove using an annular light, and the lens and the camera collect images of the groove; a transmission assembly for driving the tubular element to move such that the tubular element is located in front of the annular light source and is coaxial with the annular light source; and a computing apparatus connected to the camera, and used to acquire the images of the groove and to detect a defect of the groove according to the images of the groove. Further disclosed are a corresponding groove defect detection method and a computing apparatus.
Inventors:
LIU JIAN (CN)
JIANG CHAO (CN)
SUO XINYU (CN)
DONG LICHENG (CN)
YANG SHIHUI (CN)
HU ZHAOCHUAN (CN)
JIANG CHAO (CN)
SUO XINYU (CN)
DONG LICHENG (CN)
YANG SHIHUI (CN)
HU ZHAOCHUAN (CN)
Application Number:
PCT/CN2019/091684
Publication Date:
December 10, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
UNIV HUNAN (CN)
International Classes:
G01N21/88
Foreign References:
| CN108037141A | 2018-05-15 | |||
| CN108037141A | 2018-05-15 | |||
| CN109406542A | 2019-03-01 | |||
| CN105334219A | 2016-02-17 | |||
| JP2013011448A | 2013-01-17 |
Attorney, Agent or Firm:
BEIJING SRF INTELLECTUAL PROPERTY LLC (CN)
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