Hitachi Construction Machinery Co., Ltd.

Hidehiro Iizuka

Hiroyuki Adachi

Hiroshi Watanabe

Isao Karube

Kunitsugu Tomita

Masami Kamibayashi

Ryota Niizeki

A server device for generating and outputting work management information of at least one carrier. The server device comprises a storage device for storing a program for generating work management information, and a controller for reading the program from the storage device and generating work management information by executing the program. The controller performs: a process of acquiring position information about at least one carrier; a process of generating, based on the position information, work type information indicating whether the carrier is performing a predetermined work or moving; a process of calculating a required time for each work type information item of the carrier; a process of comparing the required time for each work type information item and extracting a work element with low work efficiency based on a first rule concerning required time; and a process of outputting the extracted work element with low work efficiency.

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Tokyo, Japan

Hidehiro Iizuka