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Title:
METHOD FOR MEASURING ACTUAL OPERATION HOURS OF WORK MACHINE PLACED IN WORK FIELD, DATA COLLECTING/MANAGING SYSTEM, AND BASE STATION
Document Type and Number:
WIPO Patent Application WO/2001/073219
Kind Code:
A1
Abstract:
The invention is applied to a system comprising multiple hydraulic shovel (1) placed in a work field and a base station (16). Each hydraulic shovel (1) has a storage unit (memory (402)), a control unit (CPU (401)) for executing a work action and inputting a machine state variable of the work action and a communication unit (42). The base station (16) has a communication unit (16a), a management server (17) for identifying the machine number of a hydraulic shovel (1) and communicating information, and a database (18) where various sets of information are stored. The control unit of the hydraulic shovel (1) communicates with the management server (17) of the base station (16). In such a system structure, the control unit measures the duration during which the machine state variable satisfies a predetermined condition, stores it in the storage unit, and sends the data on the measured duration to the management server (17) of the base station (16) on condition that the power supply key is off. The management server (17) receives data on the measured duration and calculates the accumulated operation hours. The data on the machine state variable and events stored in the storage unit of the hydraulic shovel (1) is sent to the base station (16). The management server (17) of the base station (16) stores the data on the machine state variable and events in the database (18) in a predetermined format.

Inventors:
Watanabe, Hiroshi (1082-66, Tagucho Ushiku-shi Ibaraki, 300-1236, JP)
Shibata, Koichi (Shiho-ryo, 20-29 Kandatsuchuo 2-chome Tsuchiura-shi, Ibaraki, 300-0011, JP)
Adachi, Hiroyuki (848 Okijukumachi Tsuchiura-shi Ibaraki, 300-0023, JP)
Hirata, Toichi (4-203, Sakaecho Ushiku-shi Ibaraki, 300-1233, JP)
Sugiyama, Genroku (2337, Oyama Miho-mura Inashiki-gun Ibaraki, 300-0402, JP)
Komatsu, Hideki (618-50, Fukawa Tone-machi, Kitasoma-gun Ibaraki, 300-1622, JP)
Application Number:
PCT/JP2001/002782
Publication Date:
October 04, 2001
Filing Date:
March 30, 2001
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD (5-1 Koraku 2-chome Bunkyo-ku Tokyo, 112-0004, JP)
Watanabe, Hiroshi (1082-66, Tagucho Ushiku-shi Ibaraki, 300-1236, JP)
Shibata, Koichi (Shiho-ryo, 20-29 Kandatsuchuo 2-chome Tsuchiura-shi, Ibaraki, 300-0011, JP)
Adachi, Hiroyuki (848 Okijukumachi Tsuchiura-shi Ibaraki, 300-0023, JP)
Hirata, Toichi (4-203, Sakaecho Ushiku-shi Ibaraki, 300-1233, JP)
Sugiyama, Genroku (2337, Oyama Miho-mura Inashiki-gun Ibaraki, 300-0402, JP)
Komatsu, Hideki (618-50, Fukawa Tone-machi, Kitasoma-gun Ibaraki, 300-1622, JP)
International Classes:
E02F9/20; G07C3/02; G07C5/00; (IPC1-7): E02F9/20; G05B23/02; G07C3/02
Foreign References:
JPH08144312A1996-06-04
JPH0254593B21990-11-22
JPH10308983A1998-11-17
JPH0317321A1991-01-25
JPH1136381A1999-02-09
JPH11113072A1999-04-23
JPH08144312A1996-06-04
Other References:
See also references of EP 1273723A1
Attorney, Agent or Firm:
Tamiya, Hiroshi (Meisan Tameike Building 8th floor 1-12, Akasaka 1-chome Minato-ku, Tokyo, 107-0052, JP)
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