Work machine including information collecting system

• US 9,905,062 B2
• Filed: 07/22/2013
• Issued: 02/27/2018
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Fujimori, Toshiyuki, Sugimura, Shunsuke
• Primary Examiner(s): Ramesh, Krishnan
• Application Number:
  US14/232,718
• Publication Number:
  US 20150371464A1
• Time in Patent Office: 1,681 Days
• Field of Search: None
• CPC Class Codes: E02F 9/2054 Fleet management
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

The work machine includes a controller including a first storage unit capable of storing work machine information and capable of rewriting the stored work machine information, and a processing unit configured to collect the work machine information, and when trigger information for causing the first storage unit to start storing the work machine information occurs, the processing unit causes at least a portion of the collected work machine information to be stored to the first storage unit. The first storage unit stores header information. At a time when the trigger information occurs, the processing unit generates the work machine data from the collected work machine information in accordance with the header information and stores the work machine data to the first storage unit.

Claims

1. A work machine comprising:

a controller including;

a storage unit configured to;

store work machine information;

store definition information which is information for generating work machine data including time-series data in which data collected at multiple points in time from a time at which a trigger occurs making a point as a reference time are selected as the time-series data for at least one type of work machine information from among multiple types of work machine information;

store a trigger time data which includes at least one piece of work machine information of a type different from the time-series data, in which data collected at the time at which the trigger occurs as the reference time is selected as the trigger time data;

a processing unit configured to;

collect the work machine information;

generate the work machine data from the work machine information collected according to the definition information;

store the work machine data to the storage unit;

store at least a portion of the collected work machine information in the storage unit when the trigger is received,

wherein the processing unit generates the time-series data by selecting the data collected of the one-type of work machine information at a series of points of time including before, after and at the reference time at which the trigger occurred, the processing unit stores the time-series data and the trigger time data in response to an occurrence of the trigger, and a number of pieces of data included in the trigger time data is less than a number of pieces of data included in the time-series data.

2. The work machine according to claim 1, wherein the trigger time data are one piece of data for one type of work machine information.

3. The work machine according to claim 1, wherein the definition information can be rewritten by an external unit provided outside of the controller.

4. The work machine according to claim 1, wherein the trigger time data include at least an external air temperature, an atmospheric pressure, and position information about the work machine.

5. The work machine according to claim 1, further comprising a plurality of the controllers, wherein each of the controllers can individually set the definition information.

6. The work machine according to claim 1, further comprising a communication unit for communicating with the external unit provided outside of the controller,

wherein the definition information can be rewritten by the external unit provided outside of the controller by wireless communication via the communication unit.

7. The work machine according to claim 1, wherein the trigger time data are described in a region provided at a head of the time-series data and describing at least information for interpreting the time-series data.

8. The work machine according to claim 1, wherein, for a same type of work machine information, the processing unit generates multiple different pieces of work machine data having different combinations of a number of pieces of work machine information collected by the processing unit before the trigger, a number of pieces of work machine information collected by the processing unit after the trigger, and a time interval with which the processing unit collects the work machine information.

9. The work machine according to claim 1, wherein the type of the work machine information can be changed.

10. The work machine according to claim 9, wherein the storage unit stores multiple types of definition information.

11. The work machine according to claim 10, wherein the multiple types of definition information can be changed individually from an external unit provided outside of the controller.

12. A work machine comprising:

a controller including;

a first storage unit configured to;

store work machine information;

store definition information which is information for generating work machine data including time-series data in which data collected at multiple points in time from a time at which a trigger occurs making a point as a reference time are selected as time-series data for at least one type of work machine information from among multiple types of work machine information;

store a trigger time data which includes at least one piece of work machine information of a type different from the time-series data and in which data collected at the time at which the trigger occurs as the reference time is selected as the trigger time data;

a second storage unit configured to;

store a command for executing operations;

a processing unit configured to;

generate the work machine data from the work machine information collected according to the definition information;

store the work machine data to the storage unit,

wherein the processing unit generates the time-series data by selecting the data collected of the one-type of work machine information at a series of points of time including before, after and at the reference time at which the trigger occurred, the processing unit stores the time-series data and the trigger time data in response to an occurrence of the trigger, and a number of pieces of data included in the trigger time data is less than a number of pieces of data included in the time-series data.

13. The work machine according to claim 12, wherein, for a same type of work machine information, the processing unit generates multiple different pieces of work machine data having different combinations of a number of pieces of work machine information collected by the processing unit before the trigger, a number of pieces of work machine information collected by the processing unit after the trigger, and a time interval with which the processing unit collects the work machine information.

14. The work machine according to claim 12, wherein the type of the work machine information can be changed.

15. The work machine according to claim 14, wherein the storage unit stores multiple types of definition information.

16. The work machine according to claim 15, wherein the multiple types of definition information can be changed individually from an external unit provided outside of the controller.