Global process control information system and method

• US 5,408,603 A
• Filed: 03/31/1992
• Issued: 04/18/1995
• Est. Priority Date: 03/31/1992
• Status: Expired due to Fees

• Current Assignee: Dow Benelux BV (Dow, Inc.)
• Original Assignee: Dow Benelux BV (Dow, Inc.)
• Inventors: Van de Lavoir, Ronny, Follon, Marinus, Ravenscroft, Ian
• Primary Examiner(s): Nguyen, Phu K.
• Application Number:
  US07/861,371
• Time in Patent Office: 1,113 Days
• Field of Search: 395/160, 395/161, 395/140, 395/155, 364/419.01, 364/419.08, 345/115, 345/116, 345/131
• US Class Current: 715/763
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces
• CPC Class Codes: Y10S 715/965 for process control and configuration
• CPC Class Codes: Y10S 715/97 Instrumentation and component modelling, e.g. interactive control panel

Abstract

The process control display program receives input in the form of an alphanumeric process control statement. The alphanumeric statement is parsed into its constituent lexical units and graphical icons corresponding to those lexical units are arranged on the display screen in an interconnected network or pattern which corresponds to the syntactic relationship of the lexical units which make up the statement being displayed. The change or flow of live data is depicted by changing the visual quality or color of the icons and their interconnecting network to provide a graphical representation of the alphanumeric statement which is readily understood by users worldwide.

Claims

1. A computer-implemented process control display system for producing a graphical display of alphanumeric process control statements corresponding to a process being controlled, the process control statements comprising a set of lexical units grouped in a syntactic relationship defined by a predetermined grammar with at least a subset of the lexical units being capable of representing data, the process control display system comprising:

means for supplying a process control statement to be displayed;

statement analyzer means for generating a parse tree corresponding to the process control statement to be displayed;

means for producing a graphical display window;

means for establishing a predefined set of graphical icons for representing at least a portion of said lexical units;

display generation means in communication with said parse tree for placing selected ones of said predefined set of graphical icons in said display window in a spatial relationship corresponding to the syntactic relationship of said lexica units which make up said process control statement to be displayed;

means for supplying data from the process being controlled, said data corresponding to at least one of said lexical units of said process control statement to be displayed;

evaluation means responsive to the syntactic relationship defined by said process control statement to be displayed, for establishing visual quality of said selected graphical icons in said display window based on said supplied data, whereby at least a first condition may be visually distinguished from a second condition on the basis of its visual quality.

2. The process control display system of claim 1 wherein said display generation means places selected ones of said predefined set of graphical icons in said display window in an interconnected network.

3. The process control display system of claim 1 wherein said supplied data is dynamically changing data.

4. The process control display system of claim 1 wherein said visual quality is color.

5. The process control display system of claim 1 wherein said visual quality is color, in which a first color is used to represent a first condition and a second color is used to represent a second condition.

6. The process control display system of claim 5 wherein said First color is blue and said second color is orange.

7. The process control display system of claim 1 wherein said graphical icons include interconnection means for joining with one another to define said spatial relationship.

8. The process control display system of claim 2 wherein said graphical icons include interconnection means for joining with one another to define said interconnected network.

9. The process control display system of claim 1 wherein said graphical icons include interconnection means for joining with one another to define said spatial relationship and wherein said evaluation means establishes the visual quality of said interconnection means.

10. The process control display system of claim 1 wherein said display window defines a predetermined display area and wherein said process control program further comprises means for determining the boundary defined by said graphical icons placed in said display window and for altering at least a portion of said graphical icons placed in said display window to cause said boundary to fit within said predetermined display area.

11. The process control display system of claim 1 further comprising means for initiating a request to update said data supplied by said means for supplying data.

12. The process control display system of claim 1 wherein said process control statements are synchronized to a clock and wherein said evaluation means is synchronized to said clock.

13. A computer-implemented process control display system for displaying a program expression of the type capable of representing a change in datalogical quality, comprising:

means for parsing the expression into lexical units;

recursive means for creating a structure for storing the lexical units and the syntactic relationship among the lexical units;

means for drawing symbols corresponding to the lexical units and spatially arranged in a network reflecting the syntactic relationship;

means communicating with said drawing means for displaying the change of datalogical quality.

14. The system of claim 13 wherein said means for displaying change in datalogical quality comprises means for selectively altering the visual quality of at least some of said symbols.

15. The system of claim 13 wherein said means for displaying change in datalogical quality comprises means for selectively altering the color of at least some of said symbols.

16. The system of claim 13 wherein said syntactic relationship is based on a mathematical description of a grammar in which said program expression is written.

17. The system of claim 13 further comprising means for receiving data corresponding to at least some of said lexical units and means for updating said visual display based on said data.

18. The system of claim 13 further comprising means for displaying the change of datalogical quality by providing an interconnected network of changing visual quality representing logic flow.

19. A method for displaying a program expression of the type capable of representing a change in datalogical quality, comprising:

parsing the expression into lexical units;

recursively creating a structure for storing said lexical units and the syntactic relationship among said lexical units;

creating a visual display of symbols corresponding to said lexical units in a pattern corresponding to said syntactic relationship;

updating said visual display to show the change of datalogical quality by altering the visual quality of said symbols.

20. The method of claim 19 wherein said visual display is updated by selectively altering the visual quality of at least some of said symbols.

21. The method of claim 19 wherein said visual display is updated by selectively altering the color of at least some of said symbols.

22. The method of claim 19 wherein said syntactic relationship is based on a mathematical description of a grammar in which said program expression is written.

23. The method of claim 19 further comprising receiving data corresponding to at least some of said lexical units and updating said visual display based on said data.

24. The method of claim 19 further comprising displaying the change of datalogical quality by providing an interconnected network of changing visual quality representing logic flow.

25. A completer-implemented process control display system for displaying process control information expressed in the form of a program expression of the type capable of representing a change in datalogical quality, the process control information corresponding to a process being controlled by computer executing said program expression, comprising:

means for parsing the expression into lexical units;

recursive means for creating a structure for storing the lexical units and the syntactic relationship among the lexical units;

means for drawing symbols corresponding to the lexical units and spatially arranged in a network reflecting the syntactic relationship;

means communicating with said drawing means and said process being controlled for displaying the change of datalogical quality corresponding to a state of the process being controlled.

26. The system of claim 25 wherein said means for displaying change in datalogical quality comprises means for selectively altering the visual quality of at least some of said symbols.

27. The system of claim 25 wherein said means for displaying change in datalogical quality comprises means for selectively altering the color of at least some of said symbols.

28. The system of claim 25 wherein said syntactic relationship is based on a mathematical description of a grammar in which said program expression is written.

29. The system of claim 25 further comprising means for receiving data corresponding to at least some of said lexical units and means for updating said visual display based on said data.

30. The system of claim 25 further comprising means for displaying tile change of datalogical quality by providing an interconnected network of changing visual quality representing logic flow.

31. A method for displaying process control information expressed in the form of a program expression of the type capable of representing a change in datalogical quality, the process control information corresponding to a process being control led by computer executing said program expression, comprising:

parsing the expression into lexical units;

recursively creating a structure for storing said lexical units and the syntactic relationship among said lexical units;

creating a visual display of symbols corresponding to said lexical units in a pattern corresponding to said syntactic relationship;

updating said visual display to show the change of datalogical quality, corresponding to a state of the process being controlled, by altering the visual quality of said symbols.

32. The method of claim 31 wherein said visual display is updated by selectively altering the visual quality of at least some of said symbols.

33. The method of claim 31 wherein said visual display is updated by selectively altering the color of at least some of said symbols.

34. The method of claim 31 wherein said syntactic relationship is based on a mathematical description of a grammar in which said program expression is written.

35. The method of claim 31 further comprising receiving data corresponding to at least some of said lexical units and updating said visual display based on said data.

36. The method of claim 31 further comprising displaying the change of datalogical quality by providing an interconnected network of changing visual quality representing logic flow.