US 12,305,972 B2
Method for measuring deformation of dummy rib
Zhixin Liu, Tianjin (CN); Zhixin Wu, Tianjin (CN); Hong Zheng, Tianjin (CN); Liwei Qin, Tianjin (CN); Weidong Liu, Tianjin (CN); Hong Chen, Tianjin (CN); Hai Liu, Tianjin (CN); and Kai Wang, Tianjin (CN)
Assigned to CHINA AUTOMOTIVE TECHNOLOGY AND RESEARCH CENTER CO., LTD, Tianjin (CN); and CATARC AUTOMOTIVE TEST CENTER (TIANJIN) CO., LTD, Tianjin (CN)
Filed by CHINA AUTOMOTIVE TECHNOLOGY AND RESEARCH CENTER CO., LTD, Tianjin (CN); and CATARC AUTOMOTIVE TEST CENTER (TIANJIN) CO., LTD, Tianjin (CN)
Filed on Mar. 22, 2023, as Appl. No. 18/187,697.
Claims priority of application No. 202211133833.6 (CN), filed on Sep. 19, 2022.
Prior Publication US 2024/0102792 A1, Mar. 28, 2024
Int. Cl. G01B 11/16 (2006.01); G01B 11/00 (2006.01)
CPC G01B 11/16 (2013.01) [G01B 11/002 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for measuring a deformation of dummy rib, wherein the method is implemented by a rib form measuring apparatus; the rib form measuring apparatus comprises a slide rail, an imaging component, and a plurality of laser device groups; the slide rail is disposed on a periphery of a to-be-measured dummy rib, and curvature of each position on the slide rail is identical to that of a corresponding position of a pre-designed initial dummy rib; the plurality of laser device groups are disposed on different curve segments of the slide rail, and each laser device group comprises a laser range finder; the imaging component comprises a photosensitive material disposed inside the slide rail; the method comprises:
controlling the plurality of laser device groups to slide along corresponding curve segments respectively, and
executing the following steps when the laser device groups slide to each sampling point, to obtain a degree of deformation at a position, corresponding to the sampling point, on the to-be-measured dummy rib:
controlling the laser range finder to emit a laser beam in a normal vector direction of a tangent corresponding to a position of the laser range finder on the slide rail;
determining whether the laser range finder receives corresponding reflected laser;
obtaining, if the laser range finder receives no corresponding reflected laser, a position where the corresponding reflected laser is received on the imaging component; and
determining the degree of deformation at the position, corresponding to the sampling point, on the to-be-measured dummy rib according to a position where the laser range finder emits the laser beam on the corresponding curve segment and the position where the corresponding reflected laser is received on the imaging component;
wherein each laser device group further comprises a light processing lens group for processing the laser beam emitted from the laser range finder into horizontal laser and vertical laser; and
accordingly, the determining the degree of deformation at the position, corresponding to the sampling point, on the to-be-measured dummy rib according to a position where the laser range finder emits the laser beam on the corresponding curve segment and the position where the corresponding reflected laser is received on the imaging component comprises:
determining a degree of bending deformation at the position, corresponding to the sampling point, on the to-be-measured dummy rib in a horizontal direction according to the position where the laser range finder emits the laser beam on the corresponding curve segment and a position where the reflected laser corresponding to the vertical laser is received on the imaging component.