Power over ethernet lighting system with battery charge control algorithm
First Claim
1. A power over ethernet lighting system comprising:
- a power/communication bus;
a plurality of nodes electrically connected to the power/communication bus with a PoE interface, and each of the nodes being electrically connected to a PoE luminaire;
each of the plurality of nodes including the PoE interface, a micro-controller, and a driver electrically connected to the PoE luminaire;
at least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger, and the micro-controller is electrically connected to the rechargeable battery;
wherein the system has a maintained mode in which the PoE luminaire of each of the nodes, including the emergency management node, is powered by electricity from the power/communication bus as controlled by the respective micro-controller, which is powered by one of the power/communication bus and the rechargeable battery;
wherein the system has an emergency mode characterized by a power loss on the power/communication bus, and the PoE luminaire of the emergency management node is powered by electricity from the rechargeable battery as controlled by the respective micro-controller, which is powered by the rechargeable battery;
wherein the emergency management node includes a charge sensor operably coupled to the battery and in communication with the respective micro-controller; and
the 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 the charge sensor, and configured to dynamically adjust an allocation of power to the PoE battery charger responsive to the charge level.
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Accused Products
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.
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Citations
20 Claims
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1. A power over ethernet lighting system comprising:
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a power/communication bus; a plurality of nodes electrically connected to the power/communication bus with a PoE interface, and each of the nodes being electrically connected to a PoE luminaire; each of the plurality of nodes including the PoE interface, a micro-controller, and a driver electrically connected to the PoE luminaire; at least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger, and the micro-controller is electrically connected to the rechargeable battery; wherein the system has a maintained mode in which the PoE luminaire of each of the nodes, including the emergency management node, is powered by electricity from the power/communication bus as controlled by the respective micro-controller, which is powered by one of the power/communication bus and the rechargeable battery; wherein the system has an emergency mode characterized by a power loss on the power/communication bus, and the PoE luminaire of the emergency management node is powered by electricity from the rechargeable battery as controlled by the respective micro-controller, which is powered by the rechargeable battery; wherein the emergency management node includes a charge sensor operably coupled to the battery and in communication with the respective micro-controller; and the 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 the charge sensor, and configured to dynamically adjust an allocation of power to the PoE battery charger responsive to the charge level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operating a power over ethernet lighting system that includes a power/communication bus;
- a plurality of nodes electrically connected to the power/communication bus with a PoE interface, and each of the nodes being electrically connected to a PoE luminaire;
each of the plurality of nodes including the PoE interface, a micro-controller, and a driver electrically connected to the PoE luminaire;
at least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger, and the micro-controller is electrically connected to the rechargeable battery;
wherein the system has a maintained mode in which the PoE luminaire of each of the nodes, including the emergency management node, is powered by electricity from the power/communication bus as controlled by the respective micro-controller, which is powered by one of the power/communication bus and the rechargeable battery;
wherein the system has an emergency mode characterized by a power loss on the power/communication bus, and the PoE luminaire of the emergency management node is powered by electricity from the rechargeable battery as controlled by the respective micro-controller, which is powered by the rechargeable battery, and the method comprising the steps of;communicating a charge level of the rechargeable battery to the micro-controller of the emergency management node, which includes a charge control algorithm; adjusting an allocation of power to the PoE battery charger based on the charge level responsive to execution of the charge control algorithm. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
- a plurality of nodes electrically connected to the power/communication bus with a PoE interface, and each of the nodes being electrically connected to a PoE luminaire;
Specification