Claims:WE CLAIMS

1. A method of localizing articles comprising passive Radio Frequency Identification Device (RFID) tags, the method comprising:
receiving, by an RFID platform, tag information from each of a plurality of RFID tags attached to a plurality of articles, the plurality of articles being fixed to a plurality of immovable assets disposed in a predefined layout within an enclosed region, wherein the RFID platform is automatically oriented based on the predefined layout to receive tag information from each of the plurality of RFID tags;
segregating, by the RFID platform, the tag information received from each of the plurality of RFID tags into a plurality of regions within the predefined layout based on the tag information, physical dimensions of each of the plurality of immovable assets, and a physical location of each of the plurality of immovable assets within the enclosed region;
mapping, by the RFID platform, an RFID tag from the plurality of RFID tags to an immovable asset from the plurality of immovable assets, based on a detection count of the RFID tag at a physical location of the immovable asset and total number of detection counts for a set of RFID tags from the plurality of RFID tags, at the physical location of the immovable asset, in response to segregating the tag information; and
verifying, by the RFID platform, mapping of the RFID tag to the immovable asset based on an estimated physical location of the RFID tag and an actual physical location of the RFID tag.
2. The method of claim 1, further comprising estimating a physical location of the RFID tag based on detection counts of the RFID tag at each region within the physical dimension of the immovable asset, and physical location of each region within the physical dimension of the immovable asset.
3. The method of claim 1, wherein verifying comprises comparing the physical dimension of the immovable asset with Euclidean distance between the estimated location of the RFID tag and the actual physical location of the RFID tag.
4. The method of claim 3, wherein the Euclidean distance being greater than the physical dimension of the immovable asset indicates incorrect mapping of the RFID tag to the immovable asset.
5. The method of claim 3, wherein the Euclidean distance being less than the physical dimension of the immovable asset indicates correct mapping of the RFID tag to the immovable asset.
6. The method of claim 1, further comprising displaying a result of the verification, the result comprising one of: each immovable asset comprising a single article, each immovable asset comprising multiple articles, or each immovable asset not comprising an article.
7. The method of claim 1, wherein the plurality of immovable assets comprises one of chairs, oxygen mask compartments, a lifeboat compartment, or airbag compartments.
8. The method of claim 1, wherein the plurality of articles comprises one of life vests, floats, oxygen masks, life boats, or airbags.
9. The method of claim 1, wherein receiving the tag information comprises capturing, by the RFID platform, an RFID reader power at time of detecting an RFID tag and a time stamp of detection of the RFID tag, and wherein the tag information received from the RFID tag comprises at least a unique ID of the RFID tag and a Received Signal Strength Indicator (RSSI) of a backscatter signal received from the RFID tag.
10. The method of claim 1, wherein the physical dimensions of the immovable asset comprise one or more of a width, a height, a length, or a thickness of the immovable asset.
11. The method of claim 1, wherein mapping the RFID tag to the immovable asset comprises:
computing a probability of the RFID tag being detected at the immovable asset based on a detection count for the RFID tag on the physical location of the immovable asset and the total number of detection counts for the set of RFID tags on the physical location of the immovable asset; and
normalizing the probability by applying Baye’s theorem across the plurality of immovable assets.
12. A Radio Frequency Identification Device (RFID) platform for localizing articles comprising passive RFID tags, the RFID platform comprising:
an RFID reader configured to receive tag information from each of a plurality of RFID tags attached to a plurality of articles, the plurality of articles being fixed to a plurality of immovable assets disposed in a predefined layout within an enclosed region, wherein the RFID reader is automatically oriented based on the predefined layout to receive tag information from each of the plurality of RFID tags; and
an analytics engine communicatively coupled to the RFID reader, the analytics engine being configured to:
segregate the tag information received from each of the plurality of RFID tags into a plurality of regions within the predefined layout based on the tag information, physical dimensions of each of the plurality of immovable assets, and a physical location of each of the plurality of immovable assets within the enclosed region;
map an RFID tag from the plurality of RFID tags to an immovable asset from the plurality of immovable assets, based on a detection count of the RFID tag at a physical location of the immovable asset and total number of detection counts for a set of RFID tags from the plurality of RFID tags, at the physical location of the immovable asset, in response to segregating the tag information; and
verify the mapping of the RFID tag to the immovable asset based on an estimated physical location of the RFID tag and an actual physical location of the RFID tag.
13. The RFID platform of claim 12, wherein the analytics engine is further configured to estimate a physical location of the RFID tag based on detection counts of the RFID tag at each region within the physical dimension of the immovable asset, and physical location of each region within the physical dimension of the immovable asset.
14. The RFID platform of claim 12, wherein the analytics engine is further configured to compare the physical dimension of the immovable asset with Euclidean distance between the estimated location of the RFID tag and the actual physical location of the RFID tag.
15. The RFID platform of claim 12, further comprising a display configured to display a result of the verification, the result comprising one of: each immovable asset comprising a single article, each immovable asset comprising multiple articles, or each immovable asset not comprising an article.
16. The RFID platform of claim 12, wherein the plurality of immovable assets comprises one of chairs, oxygen mask compartments, a lifeboat compartment, or airbag compartments.
17. The RFID platform of claim 12, wherein the plurality of articles comprises one of life vests, floats, oxygen masks, life boats, or airbags.
18. The RFID platform of claim 12, wherein the RFID reader is further configured to capture an RFID reader power at time of detecting an RFID tag and a time stamp of detection of the RFID tag while receiving the tag information, wherein the tag information received from the RFID tag comprises at least a unique ID of the RFID tag and a Received Signal Strength Indicator (RSSI) of a backscatter signal received from the RFID tag.
19. The RFID platform of claim 12, wherein the analytics engine is further configured to:
compute a probability of the RFID tag being detected at the immovable asset based on a detection count for the RFID tag on the physical location of the immovable asset and the total number of detection counts for the set of RFID tags on the physical location of the immovable asset; and
normalize the probability by applying Baye’s theorem across the plurality of immovable assets.

Dated this 30th day of November, 2016

R Ramya Rao
Of K&S Partners
Agent for the Applicant
, Description:TECHNICAL FIELD
This disclosure relates generally to localizing articles and more particularly to methods and systems for localizing articles comprising passive Radio Frequency Identification Device (RFID) tags.