Abstract: Electronic circuits capable of operating in a supervised capacity for controlling a mechanical release mechanism that releases a door. The circuits include a digital logic circuit for processing signals which are indicative of a condition in an outside environment and for providing a trigger that will actuate the mechanical release mechanism in response to a condition. The circuits further comprise a sensor input interface connected to the digital logic circuit for receiving a signal produced by a sensor in the environment that monitors the environment to determine the condition. Additional circuitry is provided interfaced with the digital logic circuit for controlling the motion of the door during occurrence of the condition in the environment. The electronic circuits and release mechanism described herein provide a full capability control system for rolling fire door and other emergency-type applications.

Abstract: Fire control systems and release mechanisms. The release mechanisms of the present invention comprise a digital logic circuit for processing signals which are indicative of a condition in an outside environment, and for providing a trigger that will actuate the mechanical release mechanism in response to the condition, a power circuit for providing regulated power to the electronic circuit in response to the input power, the regulated power being used to operate the digital logic circuit, and a power backup circuit interfaced to the power circuit for providing the regulated power for a predetermined time in the event of an input power failure so that the digital logic circuit can be operated for the predetermined time during the input power failure.