OPERATION DATA COLLECTION DEVICE FOR WORK MACHINES

• US 20160226977A1
• Filed: 10/17/2014
• Published: 08/04/2016
• Est. Priority Date: 11/12/2013
• Status: Active Grant

• Current Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Inventors: FUJIWARA, Jyunsuke, AIHARA, Mitsuo, SUZUKI, Hideaki, HIRUTA, Tomoaki
• Granted Patent: US 10,165,053 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E02F 9/2054 Fleet management
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: G05B 23/0264 Control of logging system, e.g. decision on which data to store; time-stamping measurements
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 4/38 for collecting sensor information

Abstract

The operation data collection device for work machines includes a plurality of sensors attached to a work machine to receive measurement data as operation data and record the operation data in an operation data storage section. The operation data collection device further includes: a communication processing section that transmits the operation data stored in the operation data storage section to an external server in response to a download request from the external server; an access history management section that manages a download status of the operation data recorded in the operation data storage section, through the download request from the external server and the transmission of the operation data to the external server; and a recorded data change processing section that changes a condition for recording the operation data in the operation data storage section in accordance with the download status of the operation data.

Claims

1. An operation data collection device for work machines having a plurality of sensors attached to a work machine, the operation data collection device receiving measurement data of the sensors as operation data to record the operation data in an operation data storage section, the operation data collection device comprising:

a communication processing section that transmits the operation data stored in the operation data storage section to an external server in response to a download request from the external server;

an access history management section that manages a download status of the operation data recorded in the operation data storage section, through the download request from the external server and the transmission of the operation data to the external server; and

a recorded data change processing section that changes a condition for recording the operation data in the operation data storage section in accordance with the download status of the operation data acquired by the access history management section.

2. The operation data collection device for work machines according to claim 1, wherein

the recorded data change processing section changes the extent for recording data in the direction of time of the operation data recorded in the operation data storage section and sensor items in accordance with the download status of the operation data acquired by the access history management section.

3. The operation data collection device for work machines according to claim 2 comprising:

a data recording condition storage section that stores information about an available free space of the operation data storage section, wherein

the recorded data change processing section changes a condition for recording the operation data in the operation data storage section in accordance with the information of the available free space of the operation data storage section, the information having been stored in the data recording condition storage section.

4. The operation data collection device for work machines according to claim 3, wherein:

the data recording condition storage section stores information about number of days elapsed from the date of data recording recorded in the operation data storage section; and

the recorded data change processing section changes the condition for recording the operation data in the operation data storage section in accordance with the information about the number of days elapsed from the date of operation data recording recorded in the operation data storage section, the information having been stored in the data recording condition storage section.

5. The operation data collection device for work machines according to claim 1 comprising:

a diagnostic processing section that diagnoses the operating state of each of a plurality of parts/systems making up the work machine on the basis of the operation data; and

a data recording processing section configured to

identify an occurrence of a faulty condition on the basis of results of diagnosis made by the diagnostic processing section, and

record the operation data in the operation data storage section only for a given period of time including the time of occurrence of the faulty condition when the data recording processing section identified an occurrence of a faulty condition.

6. The operation data collection device for work machines according to claim 5, wherein

the diagnostic processing section includes, as target parts/systems to be diagnosed, engine systems and hydraulic systems.