Abstract: A power over ethernet lighting system includes a plurality of nodes electrically connected to a power/communication bus. Each of the nodes includes a PoE interface, a micro-controller and a PoE driver electrically connected to a PoE luminaire. At least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger. The system has a maintained mode in which the PoE luminaire of each of the nodes is powered by electricity from the power/communication bus, and has an emergency mode characterized by a power loss on the power/communication bus. A micro-controller of the emergency management node includes a charge control algorithm configured to determine a charge level of the battery based on a signal from a charge sensor, and configured to dynamically adjust an allocation of power to the PoE battery charger responsive to the charge level.
Type:
Grant
Filed:
March 30, 2018
Date of Patent:
September 25, 2018
Assignee:
Platformatics, Inc.
Inventors:
Michael Jay Siefer, Arthur Alvin Harper, III
Abstract: A power over ethernet lighting system includes a plurality of nodes electrically connected to a power/communication bus. Each of the nodes includes a PoE interface, a micro-controller and a PoE driver electrically connected to a PoE luminaire. At least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger. The system has a maintained mode in which the PoE luminaire of each of the nodes is powered by electricity from the power/communication bus as controlled by the respective micro-controller, which is powered by one of the bus and the rechargeable battery. The system has an emergency mode characterized by a power loss on the power/communication bus, with the PoE luminaire of the emergency management node powered by the rechargeable battery as controlled by the micro-controller, which is also powered by the rechargeable battery.
Type:
Grant
Filed:
September 12, 2017
Date of Patent:
May 8, 2018
Assignee:
Platformatics Inc.
Inventors:
Michael J. Siefer, David C. Bender, Jonathan D. Ford, Arthur A. Harper, III