US 12,444,245 B2
Mine management system
Yoichi Iihoshi, Tokyo (JP); Kenji Mizutani, Tokyo (JP); Kouichirou Ejiri, Tokyo (JP); Hiroshi Tsukui, Tokyo (JP); and Kouji Otani, Tsuchiura (JP)
Assigned to HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
Appl. No. 18/280,776
Filed by HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo (JP)
PCT Filed Apr. 11, 2022, PCT No. PCT/JP2022/017536
§ 371(c)(1), (2) Date Sep. 7, 2023,
PCT Pub. No. WO2023/013181, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 2021-128964 (JP), filed on Aug. 5, 2021.
Prior Publication US 2024/0304038 A1, Sep. 12, 2024
Int. Cl. G07C 5/02 (2006.01)
CPC G07C 5/02 (2013.01) 10 Claims
OG exemplary drawing
 
1. A mine management system for managing mine dump trucks operating in a mine, comprising:
a processing device configured to calculate and totalize a productivity index of the mine dump trucks, wherein
the processing device is configured to:
calculate consumed energy of the mine dump truck on a basis of at least a vehicle velocity of the mine dump truck, a road surface gradient, and a load amount of the mine dump truck;
calculate input energy of the mine dump truck on a basis of at least one of a fuel injection amount, trolley electric power, and battery electric power of the mine dump truck; and
determine presence or absence of an abnormality of a load amount sensor or a powertrain system of the mine dump truck on a basis of the consumed energy and the input energy.