Monitoring entry through doorways
First Claim
Patent Images
1. An apparatus for detecting and providing indication of ‘
- tailgating’
through an access controlled portal, comprising means for transmitting and receiving one or more infrared beams across the portal, monitored by an electronic control means electronically disposed between an authorising means and a locking and/or unlocking means associated with the portal.
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Accused Products
Abstract
An access control or monitoring system, comprising means for transmitting an electromagnetic signal across a space (Tx); means for receiving said signal (Rx), the two means being disposed across a doorway in which a door (1) is located; means for using the received signals to monitor access through the doorway, and means for controlling or monitoring the opening, locking or unlocking of the door by said apparatus.
30 Citations
16 Claims
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1. An apparatus for detecting and providing indication of ‘
- tailgating’
through an access controlled portal, comprising means for transmitting and receiving one or more infrared beams across the portal, monitored by an electronic control means electronically disposed between an authorising means and a locking and/or unlocking means associated with the portal. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 14, 15)
- tailgating’
-
2. An access control or monitoring system, comprising means for transmitting an electromagnetic radiation across a space;
- means for receiving said radiation, the two means being disposed across a doorway in which a door is located;
means for using the received signals to monitor access through the doorway, and means for controlling or monitoring the opening, locking or unlocking of the door by said apparatus.
- means for receiving said radiation, the two means being disposed across a doorway in which a door is located;
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11. An access monitoring apparatus comprising means for transmitting an electromagnetic signal across a space;
- means for receiving said signal, and means for using the received signals to control and monitor access across the space, the apparatus being adapted to receive a signal from an authorising means and to provide controlling signals to a locking and/or unlocking means on an access controlled portal.
- View Dependent Claims (12, 13, 16)
Specification