Systems and methods for adaptively controlling a transmitter field
AssigneeTyco Fire & Security GmbH
InventorsAdam S. Bergman, Manuel Soto
Life of this patent
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Abstract
Systems (100) and methods (600-800) for adaptively controlling a transmitter field in an Electronic Article Surveillance (“EAS”) detection system. The methods comprise: detecting, by at least one first proximity sensor (108a, 108b), a presence of a first person located in proximity to a pedestal (102a, 102b) of the EAS detection system; determining a first distance from the first proximity sensor to the first person; and using the first distance to adaptively control the transmitter field of the EAS detection system.
Claims20
A method for adaptively controlling a transmitter field in an Electronic Article Surveillance (“EAS”) detection system, comprising:
- detecting, by at least one first proximity sensor, a presence of a first person located in proximity to a pedestal of the EAS detection system;
- determining a first distance from the first proximity sensor to the first person;
- determining a second distance from a second proximity sensor to the first person or a second person;
- comparing the first distance to the second distance;
- and
- using the results of the comparing to adaptively control the transmitter field of the EAS detection system.
A method for adaptively controlling a transmitter field in an Electronic Article Surveillance (“EAS”) detection system, comprising:
- detecting, by at least one first proximity sensor, a presence of a first person located in proximity to a pedestal of the EAS detection system;
- determining a first distance from the first proximity sensor to the first person;
- and
- using the first distance to adaptively control the transmitter field of the EAS detection system;
- determining if the first person is located in a back-field of a radiation pattern of an antenna of the first pedestal;
- and
- performing the using step if it is determined that the first person is located in the back-field of the radiation pattern of the antenna of the first pedestal and if distance information associated with a person located in the back-field should be used to control transmit power of a pedestal.
A method for adaptively controlling a transmitter field in an Electronic Article Surveillance (“EAS”) detection system, comprising:
- detecting, by at least one first proximity sensor, a presence of a first person located in proximity to a pedestal of the EAS detection system;
- determining a first distance from the first proximity sensor to the first person;
- and
- using the first distance to adaptively control the transmitter field of the EAS detection system;
- determining a second distance from a second proximity sensor to the first person;
- and
- determining if the first and second distances are the same.
A method for adaptively controlling a transmitter field in an Electronic Article Surveillance (“EAS”) detection system, comprising:
- detecting, by at least one first proximity sensor, a presence of a first person located in proximity to a pedestal of the EAS detection system;
- determining a first distance from the first proximity sensor to the first person;
- and
- using the first distance to adaptively control the transmitter field of the EAS detection system;
- detecting a presence of a second person located in proximity to a pedestal of the EAS detection system while the first person is located in proximity to the pedestal;
- determining a second distance from the pedestal to the second person;
- and
- determining if the first and second distances are the same.
An Electronic Article Surveillance (“EAS”) detection system, comprising:
- at least one proximity sensor detecting a presence of a first person located in proximity to a pedestal of the EAS detection system;
- and
- a system controller
- determining a first distance from a first proximity sensor to the first person,
- determining a second distance from a second proximity sensor to a second person,
- comparing the first distance to the second distance, and
- using the results of the comparing to adaptively control a transmitter field of the EAS detection system.
An Electronic Article Surveillance (“EAS”) detection system, comprising:
- at least one proximity sensor detecting a presence of a first person located in proximity to a pedestal of the EAS detection system;
- and
- a system controller determining a first distance from a first proximity sensor to the first person, and using the first distance to adaptively control a transmitter field of the EAS detection system;
- wherein the system controller further determines if the first person is located in a back-field of a radiation pattern of an antenna of the first pedestal;
- and
- wherein the system controller uses the first distance to adaptively control the transmitter field if it is determined that the first person is located in the back-field of the radiation pattern of the antenna of the first pedestal and if distance information associated with a person located in the back-field should be used to control transmit power of a pedestal.
An Electronic Article Surveillance (“EAS”) detection system, comprising:
- at least one proximity sensor detecting a presence of a first person located in proximity to a pedestal of the EAS detection system;
- and
- a system controller
- determining a first distance from a first proximity sensor to the first person,
- using the first distance to adaptively control a transmitter field of the EAS detection system;
- determining a second distance from a second proximity sensor to the first person;
- and
- determining if the first and second distances are the same.
An Electronic Article Surveillance (“EAS”) detection system, comprising:
- at least one proximity sensor detecting a presence of a first person located in proximity to a pedestal of the EAS detection system;
- and
- a system controller
- determining a first distance from a first proximity sensor to the first person,
- using the first distance to adaptively control a transmitter field of the EAS detection system;
- detecting a presence of a second person located in proximity to a pedestal of the EAS detection system while the first person is located in proximity to the pedestal;
- determining a second distance from the pedestal to the second person;
- and
- determining if the first and second distances are the same.
Dependencies are inferred from the claim text.