US 12,455,210 B2
Working-state cable protection monitoring system, working-state cable protection monitoring method, and storage medium having stored therein working-state cable protection monitoring program
Yutaka Yano, Tokyo (JP); Hiroshi Kawakami, Tokyo (JP); and Makoto Saitoh, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 18/010,329
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Jun. 16, 2021, PCT No. PCT/JP2021/022775
§ 371(c)(1), (2) Date Dec. 14, 2022,
PCT Pub. No. WO2021/256478, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 2020-104718 (JP), filed on Jun. 17, 2020.
Prior Publication US 2023/0341291 A1, Oct. 26, 2023
Int. Cl. G01M 11/00 (2006.01); G01H 9/00 (2006.01)
CPC G01M 11/3109 (2013.01) [G01H 9/004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A working-state cable protection monitoring system comprising:
a work apparatus configured to work or install a wire cable-shaped construction material including an optical fiber having at least one core;
an interrogator configured to acquire environment information in each location of the construction material being sensed by the optical fiber; and
an abnormal event detector configured to detect, when the environment information acquired in the location satisfies an abnormal pattern, an abnormal event in the location, wherein
the work apparatus stops movement and installation of the wire cable-shaped construction material when the abnormal event is detected, and
the abnormal event detector:
previously stores, as a non-abnormal pattern, previous environment information acquired when the work apparatus appropriately moves or installs the construction material,
does not detect the abnormal event when the environment information satisfies the non-abnormal pattern, and
determines, based on the environment information and the non-abnormal pattern, a location making contact with the work apparatus among locations of the construction material.