公开(公告)号：US20220252387A1

公开(公告)日：2022-08-11

申请号：US17666297

申请日：2022-02-07

Applicant: Chengdu University of Technology

Inventor： Lubo Meng ,  Junqi Fan ,  Guosong Sun ,  Fuli Kong ,  Tianbin Li ,  Xiaoyan Shi ,  Wei Zhou ,  Enlai Liu ,  Xing Zhu

IPC: G01B11/16 ,  H04N5/232 ,  G06T7/73 ,  E21F17/00

Abstract: A method for monitoring large deformation of a surrounding rock of a tunnel based on an automatic targeting and ranging system includes: acquiring, by a camera module, a target monitoring image; identifying a center image position in the target monitoring image; performing, by a laser ranging module, an automatic targeting and ranging task according to the center image position; and calculating a deformation offset of each target of left wall targets, right wall targets and a vault target based on an automatic targeting and ranging result corresponding to the target. The method solves the problem that a laser ranging device fails to measure a target at a fixed angle and obtains a real and accurate deformation offset thereby greatly improving the reliability of the large deformation monitoring result of the surrounding rock of the tunnel.