公开(公告)号：US09964627B1

公开(公告)日：2018-05-08

申请号：US15824659

申请日：2017-11-28

Applicant: BOOZ ALLEN HAMILTON INC.

Inventor： John C. Swartz ,  Anthony Hefner ,  Charles W. Richards ,  Gary Jason Myers ,  Matthias Welsh

IPC: G01S5/14 ,  G01S5/02 ,  G01S13/82 ,  G01S13/75 ,  G06K7/10

CPC classification number: G01S5/0252 ,  G01S13/75 ,  G01S13/825 ,  G06K7/10366

Abstract: A system and method detect direction of movement. The system includes at least two radio frequency identification (RFID) readers arranged in different locations. The RFID readers transmit respective location signals from their locations and receive corresponding response signals from a portable electronic device (PED) when the PED is within range to receive the corresponding location signals, respectively. The system includes a controller configured to determine whether the individual response signals received by the RFID readers respectively satisfy a predetermined condition at a first time and a second time after the first time. The controller is configured to determine a direction of movement of the PED relative to the locations of the RFID readers during the first and second times based on whether the response signals respectively satisfy the predetermined condition at the first and second times, and control operations of the PED based on the determined movement of the PED.

公开(公告)号：US09841490B1

公开(公告)日：2017-12-12

申请号：US15408055

申请日：2017-01-17

Applicant: BOOZ ALLEN HAMILTON INC.

Inventor： John C. Swartz ,  Anthony Hefner ,  Charles W. Richards, IV ,  Gary Jason Myers ,  Matthias Welsh

IPC: G01S3/02 ,  G01S5/02 ,  G06K7/10 ,  G01S13/75 ,  G01S13/82

CPC classification number: G01S5/0252 ,  G01S13/75 ,  G01S13/825 ,  G06K7/10366

Abstract: A system and method are provided for detecting direction of movement. The system includes at least two radio frequency identification (RFID) readers arranged in different locations. The RFID readers transmit respective location signals from their locations and receive corresponding response signals from a portable electronic device (PED) when the PED is within range to receive the corresponding location signals, respectively. The system includes a controller configured to determine whether the individual response signals received by the RFID readers respectively satisfy a predetermined condition at a first time and a second time subsequent to the first time. The controller is also configured to determine a direction of movement of the portable electronic device relative to the locations of the RFID readers during the first and second times based on whether the response signals respectively satisfy the predetermined condition at the first and second times.