METHOD FOR REDUCING METAL DETECTION SYSTEM FALSE ALARMS
First Claim
1. A system, comprising:
- an antenna housing;
a sensor situated proximate the antenna housing, the sensor generating a movement signal corresponding to movement of the antenna housing; and
a controller in communication with the sensor, the controller determining if the antenna housing has moved at least a predetermined amount based on the movement signal, the controller inhibiting generation of a metal detection alarm signal if it is determined that the antenna housing has moved at least the predetermined amount.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method for reducing the occurrence of false alarms in metal detection systems and combination EAS/metal detection systems. The system includes a motion sensor mounted on or near an antenna housing, such as an EAS pedestal, at the entrance/exit of a given interrogation zone. The motion sensor detects movement or vibration of the antenna housing. The sensor transmits signals to a controller that determines if the antenna housing has moved a predetermined amount. The system includes a metal detection module that determines if metal objects are proximate the pedestal. If metal objects are detected, a metal detection alarm is enabled. However, if it is determined that the antenna housing is moving or vibrating at least a predetermined amount, the controller inhibits generation of the metal detection alarm signal.
-
Citations
20 Claims
-
1. A system, comprising:
-
an antenna housing; a sensor situated proximate the antenna housing, the sensor generating a movement signal corresponding to movement of the antenna housing; and a controller in communication with the sensor, the controller determining if the antenna housing has moved at least a predetermined amount based on the movement signal, the controller inhibiting generation of a metal detection alarm signal if it is determined that the antenna housing has moved at least the predetermined amount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for reducing false alarms in a metal detection system comprising:
-
generating a movement signal corresponding to movement of an antenna housing; determining if the antenna housing has moved at least a predetermined amount based on the movement signal; and inhibiting generation of a metal detection alarm signal if it is determined that the antenna housing has moved at least the predetermined amount. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An integrated electronic article surveillance (“
- EAS”
)/metal detection system comprising;an EAS pedestal; a sensor mounted on the EAS pedestal, the sensor generating a movement signal corresponding to movement of the pedestal; a controller in communication with the sensor, the controller determining if the pedestal has moved at least a predetermined amount based on the movement signal, the controller inhibiting generation of a metal detection alarm signal if it determines that the antenna housing has moved at least the predetermined amount.
- EAS”
Specification