Title:
HIGH-SPEED WIRE COIL SHAPE AND POSITION DETECTION METHOD BASED ON INFRARED TECHNOLOGY
Document Type and Number:
WIPO Patent Application WO/2023/134193
Kind Code:
A1
Abstract:
Disclosed in the present invention is a high-speed wire coil shape and position detection method based on infrared technology. The method comprises: acquiring an original material image on a wire coil conveying roller track, and converting same into a corresponding grayscale image; performing noise reduction processing on the grayscale image by using a standard median filtering method; then, acquiring an edge contour and a depression point of a coil by using a bidirectional threshold segmentation method; and performing fitting using a least squares fitting algorithm, so as to obtain a corresponding equivalent ellipse, taking a calculated position of the central point and a calculated length of the major axis of the equivalent ellipse as the position of the center and the diameter of a wire coil layer corresponding to a curve segment combination, and calculating the shapes and positions of all the coils in the current original material image. In the present invention, the shapes and positions of all coils are acquired by means of analyzing and extracting contours and depression points and by means of a curve pairing method; and with regard to situations such as a sudden change, a production line operator is reminded in a timely manner to perform corresponding processing, thereby reducing product quality problems.
Inventors:
CHEN LEI (CN)
XIA QI (CN)
WANG ZHE (CN)
XIA QI (CN)
WANG ZHE (CN)
Application Number:
PCT/CN2022/119357
Publication Date:
July 20, 2023
Filing Date:
September 16, 2022
Export Citation:
Assignee:
INSTITUTE OF RES OF IRON AND STEEL JIANGSU PROVINCE/SHA STEEL CO LTD CN (CN)
JIANGSU SHAGANG HIGH TECH INFORMATION TECH CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
JIANGSU SHAGANG HIGH TECH INFORMATION TECH CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
International Classes:
G01B11/00; G01B11/24; G06T7/00; G06T7/12; G06T7/136; G06T7/62; G06T7/64; G06T7/73
Foreign References:
| CN114383506A | 2022-04-22 | |||
| CN113888517A | 2022-01-04 | |||
| CN105631876A | 2016-06-01 | |||
| CN101170641A | 2008-04-30 | |||
| JPH10164436A | 1998-06-19 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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