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US 2019/0356162 A1Published application
Power over ethernet emergency lighting system and method of detecting power loss of a link segment thereof
OwnerDavid Crenshawinventor
Life of this patent
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Abstract
A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
Claims22
A power over Ethernet (“POE”) emergency lighting system, comprising:
- a first POE input connectable to a first POE port link segment, the first POE input connected to a first POE interface connected to extract DC power from a connected POE port link segment and supply DC power to charge a connected battery;
- a second POE input connectable to a second POE port link segment, the second POE input connected to a second POE interface connected to extract DC power from a connected second POE port link segment and to supply the extracted DC power to a normal lighting LED driver;
- a switch having an output, which, responsive to control signals, alternatively connects its output to the battery or the normal lighting LED driver;
- a power loss monitor capable of detecting a loss of normal operating power,
- wherein, when the system has normal operating power, the switch connects the normal lighting LED driver to the switch output, and when the power loss monitor detects a loss of normal operating power, the switch connects the battery to the switch output.
2 more elements
A POE emergency lighting system comprising:
- a POE input connectable to a POE port link segment, the POE input connected to a POE interface, which extracts DC power from a connected POE port link segment and supplies DC power to a normal lighting lamp driver and an auxiliary DC output;
- a rechargeable battery connected to receive DC power from the auxiliary DC output;
- a power loss monitor connected to detect a loss of normal operating power, and
- a switch having a first input connected to the battery, a second input connected to the normal lighting lamp driver and an output, wherein
- when the system has normal operating power, the switch's output is connected to the normal lighting lamp driver, and when the power loss monitor detects a loss of normal operating power, the switch's output is connected to the battery.
2 more elements
The system of 7, further comprising one or more LED lamps connected to the output of the switch.
A POE emergency lighting system comprising:
- a POE input connectable to a POE port link segment, the POE input connected to a POE interface, which extracts DC power from a connected POE port link, wherein the POE interface includes an integral power bridge connected to supply low level DC power to a connected battery charger, and wherein the POE interface is also connected to supply a relatively higher level of DC power to a normal lighting lamp driver;
- a rechargeable battery connected to receive DC power from the battery charger and to supply DC power to a connected backup lamp driver;
- a controller connected to detect and generate control signals in response to a loss of normal operating power;
- a switch having an output alternatively connectable to the backup lamp driver and the normal lighting lamp driver and an output, wherein
- when the system has normal operating power, the switch's output is connected to the normal lighting lamp driver, and when the controller detects a loss of normal operating power, controller generated control signals cause the switch's output to be connected to backup lamp driver.
2 more elements
A POE lighting system comprising:
- a lamp;
- a rechargeable battery;
- a POE input;
- and
- a POE interface for extracting normal operating power from a POE cable connected to the POE input, wherein
- the system has a normal mode wherein the lamp receives normal operating power from a connected POE cable, and
- the system has an emergency mode, wherein the lamp receives power from the battery.
4 more elements
Dependencies are inferred from the claim text.