Operating state management system

• US 5,841,964 A
• Filed: 06/20/1996
• Issued: 11/24/1998
• Est. Priority Date: 06/28/1995
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamaguchi, Hideki
• Primary Examiner(s): Decady, Albert
• Assistant Examiner(s): Baderman, Scott T.
• Application Number:
  US08/668,250
• Time in Patent Office: 887 Days
• Field of Search: 395/183.21, 395/184.01, 395/182.18, 395/183.13, 395/183.2, 395/185.02, 395/185.1, 371/21.6
• US Class Current: 714/45
• CPC Class Codes: G05B 19/41875 characterised by quality surveillance of production
• CPC Class Codes: G05B 23/0227 Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

An operating state management system having database, to collect and totalize the operating states of production equipment and circumstances under which types of trouble occur in the production equipment, creates a record set Q of records in a designated range of times (ta, tb) on the basis of an operating status table in which the state of the production equipment and the time at which there is a change in the state are linked is stored in the data base in advance, and creates a trouble table on the basis of the record set Q (step S61-S73) and totalizes downtime of the production equipment by type of trouble on the basis of the trouble table (step S74).

Claims

1. An operating state management system comprising database means and a computer for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said computer including:

correlating means for storing correlation data in said database means in a time series, the correlation data being obtained by linking the type of trouble that has occurred in the production equipment, the state of the production equipment, and time of day and date at which a change in the state occurred; and

totalizing means for totalizing states of the production equipment in a designated period of time on the basis of the correlation data.

2. The system according to claim 1, wherein said totalizing means comprises downtime totalizing means for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data.

3. The system according to claim 1, wherein said totalizing means comprises working time totalizing means for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

4. The system according to claim 1, wherein said totalizing means comprises:

downtime totalizing means for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data; and

working time totalizing means for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

5. The system according to claim 1, wherein said production equipment comprising:

timekeeping means; and

communicating means for communicating type of trouble that has occurred in the production equipment and state of the production equipment to said computer together with time data indicative of time of day and date at which a change in the state occurred.

6. The system according to claim 4, wherein said computer is capable of modifying the correlation data and is capable of re-totalizing the working time and/or downtime on the basis of the correlation data that has been modified.

7. The system according to claim 6, wherein said computer is capable of modifying type of shutdown of the production equipment contained in the correlation data and of excluding this from totalization performed by said downtime totalizing means.

8. The system according to claim 1, wherein said production equipment comprises:

timekeeping mean; and

communication means for communicating type of trouble that has occurred in said production equipment and state of said production equipment to said operating state management system together with time data obtained by said timekeeping means indicative of time of day and date at which a change in the state occurred.

9. The system according to claim 8, wherein said communication means is connected to the computer of said operating state management system.

10. A computer for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said computer comprising:

correlating means for storing correlation data in external database means in a time series, the correlation data being obtained by linking the type of trouble that has occurred in the production equipment, the state of the production equipment, and time of day and date at which a change in the state occurred; and

totalizing means for totalizing states of the production equipment in a designated period of time on the basis of the correlation data.

11. The computer according to claim 10, wherein said totalizing means comprises downtime totalizing means for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data.

12. The computer according to claim 10, wherein said totalizing means comprises working time totalizing means for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

13. The computer according to claim 10, wherein said totalizing means comprises:

downtime totalizing means for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data; and

working time totalizing means for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

14. The computer according to claim 13, wherein said computer is capable of modifying the correlation data and is capable of re-totalizing the working time and/or downtime on the basis of the correlation data that has been modified.

15. The computer according to claim 14, wherein said computer is capable of modifying type of shutdown of the production equipment contained in the correlation data and of excluding this from totalization performed by said downtime totalizing means.

16. A computer readable memory storing program codes for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said memory comprising:

a correlating process code for storing correlation data in external database means in a time series, the correlation data being obtained by linking the type of trouble that has occurred in the production equipment, the state of the production equipment, and time of day and date at which a change in the state occurred; and

a totalizing process code for totalizing states of the production equipment in a designated period of time on the basis of the correlation data.

17. The memory according to claim 16, wherein said totalizing process code comprises a downtime totalizing process code for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data.

18. The memory according to claim 16, wherein said totalizing process code comprises a working time totalizing process code for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

19. The memory according to claim 16, wherein said totalizing process code comprises:

a downtime totalizing process code for totalizing downtime of the production equipment in the designated period of time on the basis of the correlation data; and

a working time totalizing process code for totalizing working time of the production equipment in the designated period of time on the basis of the correlation data.

20. An operating state management system comprising database means and a computer for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said computer including:

first correlating means for storing first correlation data in said database means in a time series, the first correlation data being obtained by linking the state of the production equipment and time of day and date at which a change in the state occurred;

second correlating means for storing second correlation data in said database means in a time series, the second correlation data being obtained by linking the type of trouble that has occurred in the production equipment and time of day and date at which the production equipment shut down owing to occurrence of the trouble; and

totalizing means for totalizing states of the production equipment in a designated period of time on the basis of the first and second correlation data.

21. The system according to claim 20, wherein said totalizing means comprises downtime totalizing means for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data.

22. The system according to claim 20, wherein said totalizing means comprises working time totalizing means for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.

23. The system according to claim 20, wherein said totalizing means comprises:

downtime totalizing means for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data; and

working time totalizing means for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.

24. The system according to claim 23, wherein said second correlating means is capable of correlating a plurality of troubles of different types that have occurred in the production equipment at the same times, wherein said second correlation means refers to the first correlation data to append, to the second correlation data, time of day and date at which the production equipment resumed operation upon resolution of the troubles;

and

said downtime totalizing means totalizes downtime by type of trouble based upon the appended second correlation data.

25. The system according to claim 24, wherein said production equipment has timekeeping means and communicates type of trouble that has occurred in the production equipment and state of the production equipment to said computer together with time data indicative of time of day and date at which a change in the state occurred.

26. The system according to claim 25, wherein said computer is capable of modifying the first and second correlation data and is capable of re-totalizing the working time and/or downtime on the basis of the correlation data that has been modified.

27. The system according to claim 26, wherein said computer is capable of modifying type of shutdown of the production equipment contained in the second correlation data and of excluding this from totalization performed by said downtime totalizing means.

28. A computer for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said computer comprising:

first correlating means for storing first correlation data in external database means in a time series, the first correlation data being obtained by linking the state of the production equipment and time of day and date at which a change in the state occurred;

second correlating means for storing second correlation data in said database means in a time series, the second correlation data being obtained by linking the type of trouble that has occurred in the production equipment and time of day and date at which the production equipment shut down owing to occurrence of the trouble; and

totalizing means for totalizing states of the production equipment in a designated period of time on the basis of the first and second correlation data.

29. The computer according to claim 28, wherein said totalizing means comprises downtime totalizing means for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data.

30. The computer according to claim 28, wherein said totalizing means comprises working time totalizing means for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.

31. The computer according to claim 28, wherein said totalizing means comprises:

downtime totalizing means for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data; and

working time totalizing means for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.

32. The computer according to claim 31, wherein said second correlating means is capable of correlating a plurality of troubles of different types that have occurred in the production equipment at the same times, wherein said second correlation means refers to the first correlation data to append, to the second correlation data, time of day and date at which the production equipment resumed operation upon resolution of the troubles;

and

said downtime totalizing means totalizes downtime by type of trouble based upon the appended second correlation data.

33. The computer according to claim 32, wherein said computer is capable of modifying the first and second correlation data and is capable of re-totalizing the working time and/or downtime on the basis of the correlation data that has been modified.

34. The computer according to claim 33, wherein said computer is capable of modifying type of shutdown of the production equipment contained in the second correlation data and of excluding this from totalization performed by said downtime totalizing means.

38. The memory according to claim 33, wherein said totalizing process code comprises:

a downtime totalizing process code for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data; and

a working time totalizing process code for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.

35. A computer readable memory storing program codes for collecting and totalizing the operating states of production equipment and circumstances under which types of trouble occur in said production equipment, said memory comprising:

a first correlating process code for storing first correlation data in external database means in a time series, the first correlation data being obtained by linking the state of the production equipment and time of day and date at which a change in the state occurred;

a second correlating process code for storing second correlation data in said database means in a time series, the second correlation data being obtained by linking the type of trouble that has occurred in the production equipment and time of day and date at which the production equipment shut down owing to occurrence of the trouble; and

a totalizing process code for totalizing states of the production equipment in a designated period of time on the basis of the first and second correlation data.

36. The memory according to claim 35, wherein said totalizing process code comprises a downtime totalizing process code for totalizing downtime of the production equipment in the designated period of time based upon the first and second correlation data.

37. The memory according to claim 35, wherein said totalizing process code comprises a working time totalizing process code for totalizing working time of the production equipment in the designated period of time based upon the first and second correlation data.