Abstract: An access control system includes an access database and barrier controller in communication with the access database. The access control system includes a vehicle with an electrical system having an OBD transceiver in communication with an on-board computer through an OBD connector. The OBD transceiver provides a vehicle indication signal SVehicle to the barrier controller in response to receiving a query signal SQuery from the barrier controller.

Abstract: A remote unit (14) couples to an obstacle detection sensor (13) to both detect an obstacle in the path of a movable barrier (11) and operability of the obstacle detection sensor (13) itself. Information regarding these and, optionally, other parameters (such as battery status) is coded and transmitted as a short burst wireless transmission to an interface unit (15). The interface unit (15) decodes the message and provides controlling information to a movable barrier operator (12) as appropriate when an obstacle is present, when the sensor (13) is faulty, or when other monitored parameters are out of normal bounds. In addition, the interface unit (15) can provide local alarms (auditory and visual) when detecting one or more of the above conditions.

Abstract: A remote unit 14 couples to an obstacle detection sensor 13 to both detect an obstacle in the path of a movable barrier 11 and operability of the obstacle detection sensor 13 itself. Information regarding these and, optionally, other parameters (such as battery status) is coded and transmitted as a short burst wireless transmission to an interface unit 15. The interface unit 15 decodes the message and provides controlling information to a movable barrier operator 12 as appropriate when an obstacle is present, when the sensor 13 is faulty, or when other monitored parameters are out of normal bounds. In addition, the interface unit 15 can provide local alarms (auditory and visual) when detecting one or more of the above conditions.

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.

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.