公开(公告)号：US10942248B2

公开(公告)日：2021-03-09

申请号：US16385909

申请日：2019-04-16

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: G01S5/06 ,  H04L12/24 ,  H04B1/16 ,  H04W4/029 ,  G01S5/02 ,  H04W4/02

Abstract: An example method includes receiving environmental data from a plurality of receivers; calculating, using a processor, an environmental offset based on the environmental data, wherein the environmental offset is operable to adjust a reference phase offset; and dynamically adjusting the environmental offset in response to a detected change in the environmental data.

公开(公告)号：US10310052B2

公开(公告)日：2019-06-04

申请号：US15492537

申请日：2017-04-20

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W4/02 ,  G01S5/06 ,  H04L12/24 ,  H04B1/16 ,  G01S5/02

Abstract: Systems, methods, apparatuses, and computer readable media are disclosed for improving, in some examples, reference in a location system. In one embodiment, a method is provided comprising: receiving reference tag blink data from a plurality of receivers; calculating, using a processor, a reference phase offset between the plurality of receivers; and generating a suspended reference phase offset table, wherein a suspended reference phase offset table is generated by causing the reference phase offset to be stored in a memory for later tag location calculations.

公开(公告)号：US10261169B2

公开(公告)日：2019-04-16

申请号：US14729761

申请日：2015-06-03

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W24/00 ,  G01S5/06 ,  G01S5/02

Abstract: The present invention provides methods for an active RFID tag target location system that provides for an iterative recalculating of a target location estimate by successively testing receiver TOA and DTOA error measurements and discarding outlier receivers. The present invention works to reduce the erratic effects that multipath channel interference and random noise play in target location systems due to incorrect identification of the main pulse of the transmit signal. In addition to providing for a greater accuracy and consistency in a TOA-based target location system, the method also provides for an opportunity to reduce a transmission bandwidth associate with the TOA transmission by the multiple receivers. The method may be considered a post-processing element, as the determination of TOA and DTOA may require a real-time calculation, where the timing constraints for the ensuing target location estimate may be less severe.

公开(公告)号：US10520582B2

公开(公告)日：2019-12-31

申请号：US16279410

申请日：2019-02-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: H04W64/00 ,  G01S5/06 ,  G01S5/02

Abstract: An disclosed method includes receiving, from receivers, TOA data associated with location tag transmissions; determining a first set of the receivers based on the received TOA data; calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers; determining a first data quality indicator (DQI) for the first tag location estimate; and when the first DQI for the first tag location estimate does not meet a threshold: determining, for the first set of the TOA data, impacts of respective delays on the minimizing function; determining, based on the impacts of the respective delays on the minimizing function, a second set the receivers different from the first set of the receivers; and calculating a second tag location estimate for the second set of the receivers.

公开(公告)号：US10481238B2

公开(公告)日：2019-11-19

申请号：US16277235

申请日：2019-02-15

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Belinda Turner ,  Thomas Dorris

IPC: H04W24/00 ,  G01S5/02 ,  G01S19/39

Abstract: Methods and apparatus for generating site health information are disclosed herein. An example apparatus is configured to generate a hub quality matrix, wherein the apparatus comprises a processor and memory including machine-readable instructions that, when executed, cause the processor to generate the hub quality matrix using at least two values of a data quality value based on the received location data, a receiver health value based on a receive rate of respective ones of the receivers, a locate gap value based on amounts of time between location estimations, a locate rate value based on a ratio of a first amount of the location estimations and a second amount of tracked participants at the site, and to output the hub quality matrix.

公开(公告)号：US20190242969A1

公开(公告)日：2019-08-08

申请号：US16385909

申请日：2019-04-16

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: G01S5/06 ,  G01S5/02 ,  H04W4/02 ,  H04L12/24 ,  H04B1/16

CPC classification number: G01S5/06 ,  G01S5/021 ,  G01S5/0236 ,  H04B1/16 ,  H04L41/0803 ,  H04W4/02 ,  H04W4/029

Abstract: An example method includes receiving environmental data from a plurality of receivers; calculating, using a processor, an environmental offset based on the environmental data, wherein the environmental offset is operable to adjust a reference phase offset; and dynamically adjusting the environmental offset in response to a detected change in the environmental data.

公开(公告)号：US20190178975A1

公开(公告)日：2019-06-13

申请号：US16277235

申请日：2019-02-15

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Belinda Turner ,  Thomas Dorris

IPC: G01S5/02 ,  G01S19/39

CPC classification number: G01S5/021 ,  G01S5/0205 ,  G01S5/0221 ,  G01S5/0294 ,  G01S19/39

Abstract: Methods and apparatus for generating site health information are disclosed herein. An example apparatus is configured to generate a hub quality matrix, wherein the apparatus comprises a processor and memory including machine-readable instructions that, when executed, cause the processor to generate the hub quality matrix using at least two values of a data quality value based on the received location data, a receiver health value based on a receive rate of respective ones of the receivers, a locate gap value based on amounts of time between location estimations, a locate rate value based on a ratio of a first amount of the location estimations and a second amount of tracked participants at the site, and to output the hub quality matrix.

公开(公告)号：US10212262B2

公开(公告)日：2019-02-19

申请号：US15609823

申请日：2017-05-31

Applicant: Zebra Technologies Corporation

Inventor： Edward A. Richley ,  Belinda Turner ,  Aitan Ameti ,  Jill Stelfox ,  James J. O'Hagan ,  Alexander Mueggenborg

IPC: H04L29/08 ,  G06K7/10 ,  H04Q9/14 ,  H04L12/26 ,  G06F17/30 ,  G06K9/00 ,  G09B19/00 ,  H04B1/7097 ,  H04B1/7163 ,  H04W4/02 ,  H04Q9/00 ,  G06Q90/00 ,  H04W4/80 ,  H04B1/719

Abstract: An example disclosed method includes generating, by a microcontroller of a controller, a data packet; and causing the transmission of the data packet on blink data pulses from two or more individual transmit modules, wherein each individual transmit module is in comprises an antenna and a pulse generator configured to transmit the data packet and is in data communications with the controller, wherein the controller causes substantially simultaneous transmission of the blink data pulses from the respective transmit modules to encourage reliable receipt of the blink data pulses at one or more of a plurality of receivers.

公开(公告)号：US10333568B2

公开(公告)日：2019-06-25

申请号：US15597895

申请日：2017-05-17

Applicant: Zebra Technologies Corporation

Inventor： Rodrigo Alonso ,  Belinda Turner ,  Aitan Ameti ,  David Senerchia

IPC: H04B1/10 ,  H04L29/08 ,  A63B24/00 ,  G06K7/10 ,  G16H50/50 ,  G06F16/951 ,  G06F16/955 ,  G06F16/9537 ,  G08C17/02 ,  H04B1/7097 ,  H04W4/02 ,  A63B71/06 ,  G06K9/00 ,  G06N5/02 ,  H04L12/26 ,  G06Q50/20 ,  G09B19/00 ,  H04B1/7163 ,  H04B1/719 ,  G06Q50/22 ,  H04Q9/00 ,  A41D1/00 ,  A41D1/04 ,  A42B3/30 ,  G16H50/30 ,  G05B15/02 ,  G06N7/00 ,  G06F19/00 ,  G06K17/00 ,  G06Q90/00

Abstract: Systems, methods, apparatuses, and computer readable media are disclosed for associating a radio frequency identification tag with a participant. In one embodiment, a method is provided for associating an unassociated RF location tag with a participant. The method may include determining an unassociated RF location tag to be associated with the participant, receiving sensor derived data from one or more sensors, determining an identity of the particular participant using the sensor derived data, and associating the identity of the particular participant with the unassociated RF location tag.

公开(公告)号：US20190178981A1

公开(公告)日：2019-06-13

申请号：US16279410

申请日：2019-02-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Edward A. Richley ,  Belinda Turner ,  Chang Wang

IPC: G01S5/06 ,  G01S5/02

CPC classification number: G01S5/06 ,  G01S5/02 ,  G01S5/0215 ,  G01S5/0221

Abstract: An disclosed method includes receiving, from receivers, TOA data associated with location tag transmissions; determining a first set of the receivers based on the received TOA data; calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers; determining a first data quality indicator (DQI) for the first tag location estimate; and when the first DQI for the first tag location estimate does not meet a threshold: determining, for the first set of the TOA data, impacts of respective delays on the minimizing function; determining, based on the impacts of the respective delays on the minimizing function, a second set the receivers different from the first set of the receivers; and calculating a second tag location estimate for the second set of the receivers.