System and method for providing location based information

• US 7,116,993 B2
• Filed: 09/27/2002
• Issued: 10/03/2006
• Est. Priority Date: 09/27/2002
• Status: Expired due to Term

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Awad, Fahed, Pai, Ramdas M., Brandt, David D., Farchmin, David W.
• Primary Examiner(s): Cumming, William D.
• Application Number:
  US10/259,089
• Publication Number:
  US 20040203930A1
• Time in Patent Office: 1,467 Days
• Field of Search: 455/457, 455/456.1, 455/422.1, 455/403, 455/41.1, 455/525
• US Class Current: 455/457
• CPC Class Codes: G01S 5/02529 not involving signal parameters, i.e. only involving identifiers
• CPC Class Codes: G05B 19/00 Programme-control systems
• CPC Class Codes: G05B 19/4184 characterised by fault tolerance, reliability of production system
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A method and system for providing information corresponding to one of several machines to a wireless interface device (WID) where the machines are located within a facility and at least a sub-set of the machines are located within a facility space where the invention includes specifying machine zones within the facility including a separate zone adjacent each machine within the space, identifying the location of the WID within the facility and determining if the WID is located within the machine zone, where the WID is located within the machine zone, identifying machine information related to an associated machine and transmitting the information to the WID.

Claims

1. A method for providing information corresponding to one of several machines to a wireless interface device (WID) where the machines are located within a facility and at least a sub-set of the machines are located within a facility space, the method comprising the steps of:

identifying zones within the facility including a separate machine zone adjacent each of the machines within the space;

identifying the location of the WID within the facility;

determining if the WID location is within a machine zone;

where the WID is located within a machine zone associated with a specific machine, identifying machine information related to the specific machine;

transmitting at least a sub-set of the machine information to the WID; and

presenting the received information via the WID.

2. The method of claim 1 for use with a wireless network including a plurality of access points positioned throughout the facility and wherein the step of identifying the WID location includes determining the approximate distances between a sub-set of the access points and the WID.

3. The method of claim 2 wherein the step of determining the approximate distances includes transmitting signals between the WID and the access points, receiving the transmitted signals and comparing relative strengths of the received signals.

4. The method of claim 3 wherein the step of transmitting includes transmitting from at least three access points to the WID.

5. The method of claim 3 wherein the wireless network includes a plurality of channels for simultaneous communication and the step of transmitting includes transmitting signals from each access point along at least a sub-set of the plurality of channels and wherein the step of comparing includes applying a statistical model corresponding to the facility to the received signals to determine WID location.

6. The method of claim 1 further including the step of storing a WID identifier in the WID, the step of identifying machine information including identifying the WID identifier and selecting a sub-set of the machine information corresponding to the identified WID identifier.

7. The method of claim 6 wherein each WID identifier is associated with a specification related to the information that can be transmitted to the WID associated with the identifier and, wherein, the step of selecting the sub-set of information includes selecting a sub-set that is consistent with the specification.

8. The method of claim 7 wherein at least a sub-set of the specifications indicate that no information is associated with the WID identifier and wherein the step of transmitting includes transmitting an indication that no information is associated with the WID.

9. The method of claim 7 wherein each specification includes at least one authority indicator indicating the types of information accessible via an associated WID and wherein the step of selecting the sub-set of information includes selecting a sub-set that is consistent with the information authority indicator.

10. The method of claim 7 wherein each specification includes at least one information presentation specification indicating information presentation preferences and wherein the method further includes the step of formatting the sub-set of information according to the information presentation specification, the step of transmitting includes transmitting the formatted information and the step of presenting includes presenting the information in a format consistent with the presentation specification.

11. The method of claim 6 wherein the step of transmitting at least a sub-set of the machine information to the WID includes transmitting the WID identifier along with the information sub-set thereby specifying the WID to receive the information sub-set.

12. The method of claim 6 wherein the step of identifying the WID identifier includes the step of transmitting the WID identifier from the WID via an access point to a machine controller.

13. The method of claim 1 wherein the received information includes a control interface specification for the specific machine and wherein the step of presenting includes configuring the WID to receive user control commands for the specific machine.

14. The method of claim 13 further including the step of, after the WID is located within a zone corresponding to a specific machine, monitoring WID location and, if the WID is removed from the zone, altering the information provided via the WID.

15. The method of claim 14 wherein the step of altering the information includes transmitting access information to the WID where the access information includes operating characteristics for the specific machine and presenting at least a sub-set of the access information via the WID.

16. The method of claim 15 wherein the step of presenting the access information includes presenting the access information until the WID is again located within a machine zone.

17. The method of claim 13 further including the step of receiving control commands for the specific machine via the WID and altering operation of the specific machine as a function of the received control commands.

18. The method of claim 17 wherein the step of altering operation includes transmitting the control commands from the WID via an access point to a machine controller and using the received control commands to alter machine operation via the controller.

19. The method of claim 1 wherein the WID is a first WID and the method is to be used with a plurality of WIDs and wherein, prior to transmitting to the first WID, the method includes the step of determining if a second WID is currently presenting a sub-set of the specific machine information within the machine zone and, if a second WID is currently presenting machine information, limiting the information transmitted to the first WID.

20. The method of claim 19 wherein the step of limiting includes transmitting a sub-set of the information that is being presented via the second WID.

21. The method of claim 20 wherein the step of transmitting a sub-set of information includes transmitting an indication that a second WID is presenting machine information related to the specific machine.

22. The method of claim 19 wherein the machine information includes a control interface specification for the specific machine useable to configure a WID to receive control commands and wherein the step of limiting includes transmitting the control interface specification to only one of the first and second WIDs.

23. The method of claim 1 further including the step of, after the WID is located within a zone corresponding to a specific machine, monitoring WID location and, if the WID is removed from the zone, altering the information provided via the WID.

24. The method of claim 23 wherein the step of altering includes halting provision of the information.

25. The method of claim 23 wherein the step of altering includes causing the WID to erase the information from its memory.

26. The method of claim 23 wherein the step of altering includes transmitting other information to the WID for presentation via the WID.

27. The method of claim 23 wherein the step of altering includes indicating that the WID has been removed from the zone.

28. The method of claim 1 wherein, for at least a sub-set of the machines within the space, the step of identifying machine zones includes identifying first and second machine zones where the first machine zone is smaller than the second machine zone and where first and second different sub-sets of machine information correspond to the first and second machine zones, respectively, the method further including the step of, where the WID is within one of the first and second zones corresponding to a specific machine, identifying which of the first and second zones the WID is in and, wherein the step of identifying machine information related to the specific machine includes the step of identifying the information sub-set corresponding to the identified zone.

29. The method of claim 28 wherein the second information sub-set includes access information and the first information sub-set includes control information for the specific machine and wherein the step of presenting includes configuring the WID as a function of the control information to receive control commands for the specific machine when the first information sub-set is transmitted.

30. The method of claim 1 wherein, for at least a sub-set of the machines within the space, the step of identifying machine zones includes identifying first and second machine zones where the first machine zone is smaller than the second machine zone and where the step of determining if the WID location is within a machine zone includes determining if the WID is located within the first machine zone, the method further including the step of, after the transmitting step, monitoring the WID location and continuing to provide the machine information until the WID is located outside the second machine zone and, when the WID is located outside the second machine zone, altering the provided information.

31. The method of claim 30 wherein the step of altering includes halting provision of the information via the WID.

32. The method of claim 1 wherein the machine information includes machine operating characteristics that are periodically updated and wherein the step of transmitting includes continually transmitting the updated characteristics to the WID.

33. The method of claim 32 further including the step of monitoring WID location and, when the WID is located outside the zone corresponding to the specific machine, stopping transmitting of the updated characteristics.

34. The method of claim 32 further including the step of monitoring WID location and, when the WID is moved to a location within another zone corresponding to a machine other than the specific machine, stopping transmitting of the updated characteristics corresponding to the specific machine.

35. The method of claim 32 further including the step of monitoring WID location and, when the WID is moved to a location within another zone corresponding to a machine other than the specific machine, providing an option to either continue to receive the updated characteristics corresponding to the specific machine or receive information corresponding to the other machine.

36. The method of claim 1 further including the step of, after the step of presenting, monitoring WID location and, when the WID is located outside the zone corresponding to the specific machine, halting presentation of the information sub-set.

37. The method of claim 1 further including the step of, after the step of presenting, monitoring WID location and presenting the machine information until the WID is located within another machine zone.

38. The method of claim 1 further including the step of, after the step of presenting, monitoring the WID for an indication from the WID user that the machine information should not be presented and, when an indication that the machine information should not be presented, halting presentation of the machine information.

39. The method of claim 1 wherein the step of identifying machine zones includes identifying non-overlapping machine zones.

40. The method of claim 1 wherein the step of identifying machine zones includes identifying machine zones where buffer zones are located between adjacent machine zones.

41. The method of claim 1 wherein the step of identifying zones further includes identifying facility sub-area zones that correspond to machine sub-sets where each machine sub-set includes a set of proximate machines and wherein the method further includes the step of, after determining the location of the WID, determining if the WID is within one of the sub-area zones and, when the WID is located within a sub-area zone associated with a specific machine sub-set, identifying information corresponding to the specific machine sub-set, transmitting at least a sub-set of the machine sub-set information to the WID and presenting the received information via the WID.

42. The method of claim 41 wherein the WID includes a display, the machine sub-set information includes a map of the machine sub-set and the step of presenting includes displaying the machine sub-set map via the WID.

43. The method of claim 1 wherein the machines within the space are dividable into machine sub-sets where each machine sub-set includes a set of proximate machines and wherein the step of identifying zones further includes identifying area zones that correspond to a plurality of proximate machine sub-sets and wherein the method further includes the step of, after determining the location of the WID, determining if the WID is within one of the area zones and, when the WID is located within an area zone associated with a specific plurality of machine sub-sets, identifying information corresponding to the specific plurality of machine sub-sets, transmitting the plurality of machine sub-sets information to the WID and presenting the received information via the WID.

44. The method of claim 43 wherein the WID includes a display, the plurality of machine sub-sets information includes a map of the plurality of machine sub-sets and the step of presenting includes displaying the plurality of machine sub-sets map via the WID.

45. A method for providing information corresponding to one of several machines to a wireless interface device (WID) where the machines are located within a facility and at least a sub-set of the machines are located within a facility space, the method comprising the steps of:

storing a WID identifier in a WID;

identifying zones within the facility including a separate machine zone adjacent each of the machines within the space;

identifying the location of the WID within the facility;

determining if the WID location is within a machine zone;

where the WID is located within a machine zone associated with a specific machine, identifying the WID identifier;

identifying machine information related to the specific machine;

transmitting at least a sub-set of the machine information along with the WID identifier to the WID; and

presenting the received information via the WID.

46. The method of claim 45 wherein the step of identifying machine information includes selecting a sub-set of the machine information corresponding to the specific identified WID identifier.

47. The method of claim 46 wherein each WID identifier is associated with a specification related to the information that can be transmitted to the WID associated with the identifier and, wherein, the step of selecting the sub-set of information includes selecting a sub-set that is consistent with the specification.

48. The method of claim 47 wherein each specification includes at least one authority indicator indicating the types of information accessible via an associated WID and wherein the step of selecting the sub-set of information includes selecting a sub-set that is consistent with the information authority indicator.

49. The method of claim 45 wherein the step of identifying the WID identifier includes the step of transmitting the WID identifier from the WID via an access point to a machine controller.

50. A method for providing information corresponding to one of several machines to a wireless interface device (WID) where the machines are located within a facility and at least a sub-set of the machines are located within a facility space, the method comprising the steps of:

identifying zones within the facility including a separate machine zone adjacent each of the machines within the space;

identifying the location of the WID within the facility;

determining if the WID location is within a machine zone;

where the WID is located within a machine zone associated with a specific machine, identifying machine information related to the specific machine;

transmitting at least a sub-set of the machine information to the WID;

presenting the received information via the WID;

monitoring WID location and, when the WID is located outside the machine zone, altering the information presented via the WID.

51. The method of claim 50 wherein the received information includes a control interface specification for the specific machine and wherein the step of presenting includes configuring the WID to receive control commands for the specific machine.

52. The method of claim 51 wherein the step of altering the information includes transmitting access information to the WID where the access information includes operating characteristics for the specific machine and presenting at least a sub-set of the access information via the WID.

53. The method of claim 52 wherein the step of presenting the access information includes presenting the access information until the WID is again located within a machine zone.

54. The method of claim 50 wherein the step of altering includes halting provision of the information.

55. The method of claim 50 wherein, for at least a sub-set of the machines within the space, the step of identifying machine zones includes identifying first and second machine zones where the first machine zone is smaller than the second machine zone and where first and second different sub-sets of machine information correspond to the first and second machine zones, respectively, the method further including the step of, where the WID is within one of the first and second zones corresponding to a specific machine, identifying which of the first and second zones the WID is in and, wherein the step of identifying machine information related to the specific machine includes the step of identifying the information sub-set corresponding to the identified zone.

56. The method of claim 55 wherein the second information sub-set includes access information and the first information sub-set includes control information for the specific machine and wherein the step of presenting includes configuring the WID as a function of the control information to receive control commands for the specific machine when the first information sub-set is transmitted.