Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2014205174) SYSTEMS AND METHODS FOR OBJECT LOCALIZATION AND PATH IDENTIFICATION BASED ON RFID SENSING
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

The embodiments of the invention in which an exclusive property or privilege is claimed

are defined as follows:

1. A radio frequency identification (RFID) system for localizing an RFID tag, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

at least one sensing entity;

a computer in signal communication with the plurality of RFID tag readers and at least one sensing entity over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a semantic attribute the RFID tag by:

mapping one of the oriented links to a source endpoint at a first physical location and a destination endpoint at a second physical location; determining that the RFID tag is present at the source endpoint at a first time value and that the RFID tag is present at the destination endpoint at a second time value;

determining that the RFID tag has traversed the oriented link from the source endpoint to arrive at the destination endpoint, including a path of travel and a direction assigned to the oriented link;

determining that a parameter from at least one sensing entity sampled between the first time value and the second time value is within a predetermined measurement interval; and

associating the semantic attribute to the RFID tag based on the determination that the RFID tag has traversed the oriented link and the determined parameter.

2. The system of claim 1 , wherein the sensing entity is attached to one of the RFID tags.

3. The system of claim 1 , where the software module invalidates the semantic attribute after the passage of a time interval.

4. The system of claim 1 where the system communicates with a tag by providing to the RFID readers a tag mask or filter based on a semantic associated with the tag.

5. A radio frequency identification (RFID) system for localizing at least two RFID tags, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

a computer in signal communication with the plurality of RFID tag readers over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a group dependent semantic attribute to at least one of the RFID tags by:

determining that the first RFID tag passed an oriented link at a first time value;

determining that the second RFID tag passed the oriented link at a second time value; and

defining a semantic group by associating a group dependent semantic attribute to at least one of the RFID tags based on a semantic attribute associated with the oriented link.

6. The system of claim 5 wherein the system associates the group semantic attribute to the first RFID tag when the difference between the second time value and first time value is within a predefined interval.

7. The system of claim 5 wherein the system defines a new group semantic attribute

based on the at least two RFID tags and further wherein the step of associating the group semantic attribute comprises associating the new group semantic attribute.

8. The system of claim 5 wherein the semantic attribute is associated with access control rules.

9. The system of claim 5 wherein the semantic attribute is further determined based on an external input or external semantic.

10. The system of claim 5 wherein the semantic attribute is associated with time

management rules.

1 1. The system of claim 5 wherein the system develops a semantic chain based on the group dependent semantic attribute.

12. The system of claim 5 where the system communicates with a semantic group by

providing to the RFID readers a tag mask or filter based on the semantic group.

13. A radio frequency identification (RFID) system for localizing at least two RFID tags, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

at least one sensor, the sensor being configured to detect a parameter other than a location or presence of the RFID tags;

a computer in signal communication with the plurality of RFID tag readers and at least one sensing entity over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a group semantic attribute with at least one of the RFID tags by:

determining that the first RFID tag is present at a first endpoint at a first time value and that the second RFID tag is present at the first endpoint at a second time value;

receiving a measurement from a sensor associated with the first endpoint between the first time and the second time value; and

forming a semantic group by associating the group semantic attribute to at least one of the RFID tags as a function of the sensor measurement and the determined presence of the first RFID tag and the second RFID tag.

14. The system of claim 13 wherein the system defines a new group semantic attribute based on at least one of the RFID tags and assigns the new group semantic attribute to the semantic group.

15. The system of claim 13, wherein the sensor is attached to one of the RFID tags.

16. The system of claim 13, wherein the software module invalidates the semantic attribute after the passage of a time interval.

17. The system of claim 13 wherein the system communicates with the semantic group by providing to the RFID readers a tag mask or filter based on the semantic group.

18. The system of claim 13 wherein the group semantic attribute is associated with an

access control rule.

19. The system of claim 13 wherein the group semantic attribute is associated with time a management rule.

20. The system of claim 19 wherein the time management rule is based on a semantic

interval.

21. A radio frequency identification (RFID) system for localizing an RFID tag, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

a computer in signal communication with the plurality of RFID tag readers over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a composite semantic attribute to the RFID tag by:

assigning a first semantic attribute to a first oriented link;

assigning a second semantic attribute to a second oriented link;

defining the composite semantic attribute based on a combination of the first semantic attribute and the second semantic attribute;

determining that the RFID tag passed the first oriented link at a first time value; determining that the RFID tag passed a second oriented link at a second time value; and

associating the composite semantic attribute to the RFID tag.

22. The system of claim 21 where the software module is further configured to assign and record an activity duration for an RFID tag based on a semantic attribute determined for the RFID tag.

23. The system of claim 21 , where the software module invalidates at least one of the first and the second semantic attribute after the passage of a time interval and further the software module does not assign the composite semantic attribute if at least one of the first and the second semantic attributes are invalid.

24. The system of claim 21 , where the software module invalidates the composite semantic attribute after the passage of a time interval.

25. The system of claim 21 where the system communicates with the tag by providing to the RFID readers a tag mask or filter based on a semantic attribute associated with the tag.

26. The system of claim 21 where the composite semantic attribute is associated with an access control rule.

27. The system of claim 26 wherein the access control rule is based on a semantic interval.

28. The system of claim 21 where the semantic attribute is associated with a time

management rule.

29. The system of claim 28 wherein the time management rule is based on a semantic

interval.

30. The system of claim 21 wherein the composite semantic attribute is further determined based on at least one of an external input or an external semantic.

31. The system of claim 30 wherein the external input is based on an input from a user.

32. A radio frequency identification (RFID) system for localizing an RFID tag, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

a computer in signal communication with the plurality of RFID tag readers over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more radio frequency identification (RFID) tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a rating with the RFID tag by determining a semantic for the RFID tag and associating the rating with the tag based on the determined semantic.

33. The system of claim 32 wherein the tag is assigned to a semantic group and the system associates the rating based on the determined semantic and the semantic group.

34. The system of claim 33, wherein the semantic group is associated with a rating or a weight.

35. The system of claim 32, wherein the semantic is associated with a rating or a weight.

36. The system of claim 32, wherein the system further adjusts the semantic model as a function of the rating associated with the tag.

37. The system of claim 36, wherein the system includes at least one sensing entity, and further wherein the system adjusts the semantic model as a function of an input from the sensing entity.

38. The system of claim 37, wherein the system accepts an input from an external source and further wherein the system adjusts the semantic model as a function of the input from the external source.

39. The system of claim 32, wherein the system includes at least one sensing entity, and further wherein the determination of the semantic by the system is based on an input from the sensing entity.

40. The system of claim 32, wherein the system accepts an input from an external source and further wherein the determination of the semantic by the system is based on the input from the external source.

41. The system of claim 32, wherein the software model determines an incentive as a

function of the rating.

42. A radio frequency identification (RFID) system for localizing at least two RFID tags which have tag to tag communication capabilities, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

a computer in signal communication with the plurality of RFID tag readers over a network;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to identify a semantic group of RFID tags by:

issuing a first semantic group identification command to a first RFID tag; conveying the group identification command from the first RFID tag to the second

RFID tag via tag to tag communication;

issuing a second semantic group identification command;

receiving a response from at least one of the first RFID tag or second RFID tag; and identifying a semantic group, the semantic group including the first and the second RFID tags based on the received response.

43. The system of claim 42 wherein the second RFID tag comprises an internal memory, and further wherein an indication of receiving the semantic group identification command is stored in the internal memory.

44. The system of claim 43 wherein further the first RFID tag comprises an internal

memory, and further wherein a response to the semantic group identification command from the second RFID tag is stored in the internal memory.

45. The system of claim 44 wherein semantic rules are stored on at least one of the first and second RFID tags, and further wherein the step of identifying a semantic group is based on the stored semantic rules.

46. A radio frequency identification (RFID) system for localizing at least a first RFID tag and a second RFID tag, the system comprising:

a plurality of radio frequency identification (RFID) tag readers;

a computer in signal communication with the plurality of RFID tag readers over a network;

a memory associated with the computer, the memory storing a network model having a plurality of endpoints and oriented links between the endpoints, wherein the endpoints are associated with physical locations in space, each of the endpoints having associated with it one or more of the RFID tag readers;

the computer being configured to operate a software module that localizes the RFID tag based on data received from the RFID tag readers;

the software module further being configured to associate a group semantic attribute to at least one of the RFID tags by:

associating a semantic attribute with the first RFID tag at a first time;

determining that the first RFID tag and the second RFID tag are present at a first location at a second time;

determining that the second RFID tag has disappeared from a semantic field within an interval of time from the second time; and

associating the group semantic attribute to the second RFID tag based on the semantic attribute associated with the first RFID tag.

47. The system of claim 46 wherein the step of associating the group semantic attribute to the second RFID tag is performed as a function of a determination that all tags associated with the group semantic attribute have disappeared from the semantic field.

48. The system of claim 47 wherein the first RFID tag and the second RFID tags comprise tag to tag communication capabilities and the determination that all tags associated with the group semantic attribute have disappeared from the semantic field is performed using tag to tag communication.

49. The system of claim 46 wherein the second RFID tag belongs to a first semantic group, and further wherein the software module is further configured to associate the group semantic attribute to the first semantic group.

50. The system of claim 46 wherein the first RFID tag and the second RFID tags comprise tag to tag communication capabilities, the step of associating the group semantic attribute being performed as a function of tag to tag communications.

51. The system of claim 46, wherein the second RFID tag belongs to a first semantic group and the software module is further configured to associate the group semantic attribute to the first tag only if all RFID tags of the first semantic group have disappeared from the semantic field.

52. The system of claim 51 , wherein the first and second RFID tags include tag to tag

communication capabilities and the system uses tag to tag communication to determine the disappearance of the first semantic group from the semantic field.