# US 2013/0278390 A1 · Systems and methods for object localization and path identification based on rfid sensing

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- Number: US 2013/0278390 A1
- Document ID: US20130278390A1
- Status: Published application
- Kind: A1
- Application number: 13/921,976
- Filed: 2013-06-19
- Published: 2013-10-24
- Earliest claimed: 2007-07-27
- Assignees: Lucomm Technologies, Inc.
- Applicants: Lucomm Technologies, Inc.
- Inventors: Lucian Cristache
- Web page: https://patentgrep.com/patent/US20130278390A1

## CPC

- G01S 13/876: {Combination of several spaced transponders or reflectors of known location for determining the position of a receiver (G01S13/874 takes precedence)}
- G01S 5/0278: {involving statistical or probabilistic considerations (G01S5/0252, G01S5/0294 take precedence)}
- G06K 7/10366: {the interrogation device being adapted for miscellaneous applications}
- H04B 5/77: for interrogation
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- H04B: TRANSMISSION

## Abstract

A networked radio frequency identification system includes a plurality of radio frequency identification (RFID) tag readers, a computer in signal communication with the RFID tag readers over a network, and a software module for storage on and operable by the computer that localizes RFID tags based on information received from the RFID tag readers using a network model having endpoints and oriented links. In an additional example, at least one of the RFID tag readers includes an adjustable configuration setting selected from RF signal strength, antenna gain, antenna polarization, and antenna orientation. In a further aspect, the system localizes RFID tags based on hierarchical threshold limit calculations. In an additional aspect, the system controls a locking device associated with an access point based on localization of an authorized RFID tag at the access point and reception of additional authorizing information from an input device.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The system of claim 1 wherein the tag is assigned to a semantic group and the system associates the rating based on the determined semantic and the semantic group.

### Claim 3 (depends on 2)

The system of claim 2, wherein the semantic group is associated with a rating or a weight.

### Claim 4 (depends on 1)

The system of claim 1, wherein the semantic is associated with a rating or a weight.

### Claim 5 (depends on 1)

The system of claim 1, wherein the system further adjusts the semantic model as a function of the rating associated with the tag.

### Claim 6 (depends on 5)

The system of claim 5, 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.

### Claim 7 (depends on 6)

The system of claim 6, 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.

### Claim 8 (depends on 1)

The system of claim 1, 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.

### Claim 9 (depends on 1)

The system of claim 1, 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.

### Claim 10 (depends on 1)

The system of claim 1, wherein the software model determines an incentive as a function of the rating.