Two-dimensional antenna configuration
First Claim
1. An antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising:
- (a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and
(b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein;
at least one elongated reader coil in the first set is associated with at least two different elongated reader coils in the second set;
at least one elongated reader coil in the second set is associated with at least two different elongated reader coils in the first set; and
each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set.
2 Assignments
0 Petitions
Accused Products
Abstract
In one embodiment, an antenna configuration for locating RFID tags has two sets of (mutually orthogonal) elongated reader coils, where each elongated reader coil corresponds to two or more different possible locations of RFID tags, and each possible location is associated with one reader coil in each of the two sets. The identities and locations of RFID tags can be determined by (sequentially) energizing the different sets of reader coils and correlating the recorded responses from RFID tags. In one application, the antenna configuration is used at the box level of a cold storage system for biological samples having one or more freezers, each freezer having one or racks, each rack receiving one or more boxes, each box receiving one or more sample containers, where, in addition to the biological sample, each sample container has a unique passive RFID tag.
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Citations
36 Claims
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1. An antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising:
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(a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and (b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein; at least one elongated reader coil in the first set is associated with at least two different elongated reader coils in the second set; at least one elongated reader coil in the second set is associated with at least two different elongated reader coils in the first set; and each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27)
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26. A system for storing samples, the system comprising one or more cabinets, each cabinet comprising cabinet control electronics and one or more hierarchy levels, each hierarchy level comprising control electronics adapted to communicate with control electronics of one or more elements of a next-lower hierarchy level, wherein:
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a lowest hierarchy level in each cabinet is a box level comprising one or more boxes for each element of a second-lowest hierarchy level in each cabinet; each box at the box level comprises box control electronics and adapted to receive one or more corresponding sample containers, each sample container comprising container electronics and adapted to store a sample; the cabinet control electronics of each cabinet is adapted to communicate with control electronics of each element of a highest hierarchy level in each cabinet; the box control electronics of each box are adapted to communicate with the container electronics of each corresponding sample container; the container electronics of each sample container is adapted to communicate sample-identification information to the corresponding box control electronics; the corresponding box control electronics is adapted to communicate the sample-identification information to control electronics of the corresponding element of the second-lowest hierarchy level; control electronics of each element of a second-highest hierarchy level is adapted to communicate the sample-identification information to the corresponding cabinet control electronics; and the system includes an antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising; (a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and (b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein; each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set.
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28. An antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising:
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(a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and (b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein; each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set; each elongated reader coil has a series of expanded regions interconnected by contracted regions, wherein; conductors forming the expanded region are further apart than are conductors forming the contracted regions; and each expanded region corresponds to a different possible location in the corresponding column or row of the two-dimensional distribution. - View Dependent Claims (29, 30, 31)
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32. An antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising:
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(a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and (b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein; each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set; further comprising control electronics adapted to energize each elongated reader coil and record the identity of RFID tags responding to each energized reader coil, wherein the control electronics are adapted to inject a signal into each of one or more neighboring reader coils that neighbor an energized reader coil, wherein the injected signal inhibits RFID tags associated with the corresponding neighboring reader coil from being read by the energized reader coil. - View Dependent Claims (33, 34, 35)
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36. An antenna configuration for determining identity and location of RFID tags in a two-dimensional distribution of possible locations, the antenna configuration comprising:
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(a) a first set of elongated reader coils, each elongated reader coil in the first set associated with a different column of possible locations in the two-dimensional distribution; and (b) a second set of elongated reader coils, each elongated reader coil in the second set associated with a different row of possible locations in the two-dimensional distribution, wherein; each possible location in the two-dimensional distribution is associated with (i) a single elongated reader coil in the first set and (ii) a single elongated reader coil in the second set; the two-dimensional distribution corresponds to a box having a two-dimensional distribution of slots for receiving samples, each sample having a unique RFID tag; the two-dimensional distribution is a substantially sector-shaped distribution of annular and radial rows/columns of slots; at least two annular rows/columns have different numbers of slots; and at least two radial rows/columns have different numbers of slots.
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Specification