公开(公告)号：US09889528B2

公开(公告)日：2018-02-13

申请号：US15541021

申请日：2015-12-16

Applicant: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jiayou Wang ,  Jie Zhu ,  Cai Zhang ,  Maosen Yang ,  Na Su ,  Wenhang Li

IPC: G06K9/00 ,  B23K31/12 ,  G01B11/02 ,  G01B11/14 ,  G06T7/00 ,  G06T7/13 ,  G06T7/73 ,  G06T7/155 ,  G06T7/136 ,  G01R19/00

CPC classification number: B23K31/125 ,  B23K9/0213 ,  B23K9/0216 ,  B23K9/0956 ,  B23K9/1274 ,  B23K9/173 ,  G01B11/022 ,  G01B11/14 ,  G01R19/0092 ,  G06T7/0004 ,  G06T7/13 ,  G06T7/136 ,  G06T7/155 ,  G06T7/73 ,  G06T2207/10048 ,  G06T2207/20032 ,  G06T2207/20036 ,  G06T2207/30136 ,  G06T2207/30152

Abstract: An infrared vision sensing detection method and device for narrow-gap weld seam deviation are provided. The device includes a shaking (or rotating) arc narrow-gap welding torch, an arc current sensor, a computer image processing system, and an infrared photographing system. The infrared photographing system includes an infrared camera which acquires an infrared image of a welding region in an external triggering manner when an arc shakes (or rotates) to a position closest to the left side wall or right side wall of a groove. After computer image processing, a welding wire position and a groove edge information is extracted in real time, and a weld seam deviation is calculated according to position changes of a welding wire relative to the left side wall and the right side wall of the groove, and the weld seam deviation is output. During pulsed arc welding, a signal in a base value period of the arc current pulse is detected by using the current sensor, thereby realizing welding image acquisition synchronized with the base value current period of the pulsed arc.