US 11,941,562 B2
Operation analysis method, operation analysis device, and operation analysis program
Katsuhiko Takahashi, Hiroshima (JP); Katsumi Morikawa, Hiroshima (JP); and Shoya Nakamura, Hiroshima (JP)
Assigned to KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP); and HIROSHIMA UNIVERSITY, Higashi-Hiroshima (JP)
Appl. No. 17/440,013
Filed by KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP); and HIROSHIMA UNIVERSITY, Higashi-Hiroshima (JP)
PCT Filed Feb. 6, 2020, PCT No. PCT/JP2020/004683
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/202788, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-065247 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0172133 A1, Jun. 2, 2022
Int. Cl. G06Q 10/0633 (2023.01)
CPC G06Q 10/0633 (2013.01) 7 Claims
OG exemplary drawing
 
1. An operation analysis method in an operation analysis device that analyzes a dismantling operation of repeating an action of grasping a dismantling part from a dismantling target by a crusher attached to an attachment tip of a dismantling machine and an action of moving the grasped dismantling part to a sorting destination, the operation analysis method comprising:
a first step of acquiring operation trajectory data in which position information and open/close information of the crusher during an operation period of the dismantling operation are recorded in time series;
a second step of identifying, based on the operation trajectory data, all open points indicating positions at which the crusher is opened during the operation period and all close points indicating positions at which the crusher is closed during the operation period;
a third step of calculating, as a shortest distance, a distance between each open point of the all open points and a close point nearest to the each open point, and identifying, as a sorting destination open point, an open point at which the shortest distance exceeds a first threshold value;
a fourth step of identifying, based on the position information, data until the crusher grasping the dismantling part moves to the sorting destination and returns to the dismantling target again from among the operation trajectory data as movement data of the crusher having moved in the dismantling operation; and
a fifth step of identifying data in which the movement data has been removed from the operation trajectory data as grasping operation data indicating an action until the crusher grasps the dismantling part in the dismantling operation.