Wireless fire alarm door unlocking interface
First Claim
1. A door unlocking interface for a facility having sensors connected to an alarm control panel, the facility further having an access control system comprising a central access controller and a remote access controller, the remote access controller positively controlling access to the facility through an electronic lock on a door, the door unlocking interface comprising:
- a central alarm control panel interface receiving an alarm signal from the alarm control panel and responsively generating an unlock signal;
a first RF transceiver transmitting the unlock signal on a channel of an RF communications link;
a second RF transceiver receiving the unlock signal;
a remote alarm control panel interface associated with the door, the remote alarm control panel interface receiving the unlock signal from the second RF transceiver and responsively disengaging the electronic lock to cause the release of the door; and
an error detection function for detection of errors on the channel.
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Accused Products
Abstract
A wireless fire alarm door unlocking system includes a remote alarm panel interface to receive information from a central alarm panel interface over an RF channel. The central alarm panel interface monitors an output from an alarm control panel and, when an alarm condition is asserted, initiates an unlock signal that is sent to the remote alarm panel interface. It in turn causes the door with which it is associated to unconditionally release to allow unimpeded entrance and exit. The system also monitors the status of the remove alarm panel interface and raises an alert in the event of a malfunction. The interface may be implemented as a hardware and software modification to an access control system or as separate components that coexist with an access control system on a non-interfering basis.
72 Citations
20 Claims
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1. A door unlocking interface for a facility having sensors connected to an alarm control panel, the facility further having an access control system comprising a central access controller and a remote access controller, the remote access controller positively controlling access to the facility through an electronic lock on a door, the door unlocking interface comprising:
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a central alarm control panel interface receiving an alarm signal from the alarm control panel and responsively generating an unlock signal; a first RF transceiver transmitting the unlock signal on a channel of an RF communications link; a second RF transceiver receiving the unlock signal; a remote alarm control panel interface associated with the door, the remote alarm control panel interface receiving the unlock signal from the second RF transceiver and responsively disengaging the electronic lock to cause the release of the door; and an error detection function for detection of errors on the channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An integrated system for controlling access to a facility through a door and for unlocking the door in response to an alert condition, the integrated system comprising
an alarm control panel providing an alarm signal; -
a central access controller containing a central alarm control panel interface, the central alarm control panel interface receiving the alarm signal and responsively sending an unlock signal; a central alarm transceiver transmitting the unlock signal over a wireless communications channel; a remote alarm transceiver receiving the unlock signal on the wireless communications channel and providing the unlock signal to a remote alarm control panel interface; a remote access controller containing the remote alarm control panel interface, the remote access controller associated with the door, the remote alarm control panel interface receiving the unlock signal and responsively disengaging a lock associated with the door to cause the release of the door; and an error detection function for detection of errors on the channel. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. In a facility having an access control system and a fire alarm control system,
the access control system comprising a central access controller, a remote access controller, and an RF channel, the central access controller communicating with the remote access controller over the RF channel, the remote access controller positively controlling access to the facility through an electronic lock on a door, the fire alarm control system comprising a sensor connected to a fire alarm control panel that generates an alarm signal in response to the sensor, an alarm control system comprising a central alarm control panel interface receiving the alarm signal from the fire alarm control system and responsively generating an unlock signal that causes the door to disengage.
Specification