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US 11,509,492 B2Granted
Power over Ethernet system having multiple power source devices and control device thereof
AssigneeIC Plus Corp.
InventorChef Hsiao
Life of this patent
Estimating the term…
Abstract
Control device for power over Ethernet system having multiple power source devices controls power distribution to a plurality of communication ports. Master controller provides a power supply to power consumption look-up-table to a plurality of control circuits in various manners via a series bus. When one power source device shuts down, each control circuit can rapidly shut off selected port switches connected thereto.
Claims25
A control device for power over Ethernet (PoE) system having multiple power source device, to control a power consumption state of a plurality of communication ports in the system;
- wherein the PoE system comprises a plurality of power source device and a combination of power supply state of the plurality of power source device at one time forms a power supply state combination;
- the control device comprising:
- a master controller, comprising:
- an input terminal for connecting a plurality of power source devices to receive a power supply state signal representing a power supply state combination of the plurality of power source devices;
- a detection circuit connected to the input terminal for detecting the power supply state signal and for generating a power supply state change signal, when a power supply state signal received by the detection device is different from a previously received power supply state signal;
- a first look-up-table memory to store a first power supply to power consumption look-up-table defining a corresponding relation of a plurality of power supply state combination to a plurality of power consumption control combination;
- and
- a control signal generating circuit connected to the detection circuit and configured to:
- generate, upon receipt of a power supply state change signal, a power supply state code corresponding to the received power supply state signal;
- a plurality of control circuits connected to the master controller and a plurality of port switches, each port switch controlling a power consumption state of at least one port to be connected by a power consuming device;
- wherein each control circuit is configured to generate, upon receipt of the power supply state code, a power consumption control signal corresponding to the power supply state code and to provide the power consumption control signals to corresponding port switches, to determine a power consumption state of corresponding ports;
- and
- a signal bus connected to the master controller and the plurality of control circuits;
- wherein, the signal bus is a serial bus.
11 more elements
A control device for power over Ethernet (PoE) system having multiple power source device, to control a power consumption state of a plurality of communication ports in the system;
- wherein the PoE system comprises a plurality of power source device and a combination of power supply state of the plurality of power source device at one time forms a power supply state combination;
- the control device comprising:
- a master controller, comprising:
- an input terminal, connected to the plurality of power source devices to receive a power supply state signal representing a combination of power supply state of the plurality of power source devices;
- a detection circuit connected to the input terminal to detect a change in the power supply state combination according to the received power supply state combination signal;
- a first look-up-table memory to store a first power supply to power consumption look-up-table defining a corresponding relation of a plurality of power supply state combination and a plurality of power consuming control combination;
- and
- a control signal generating circuit connected to the detection circuit and configured to:
- pick up, after detection of a change in the power supply state combination by the detection circuit, a power consumption control data corresponding to the received power supply stage signal from the first power supply to power consumption look-up-table, divide the power consumption control data into a plurality of power consumption control signals and output the power consumption control signals;
- wherein each power consumption control signal corresponds to at least one control circuit;
- and
- a plurality of control circuit connected to the master controller and a plurality of port switches, each port switch controlling a power consumption state of at least one port for connection by a power consuming device;
- wherein each control circuit is configured to:
- upon receipt of the power consumption control signal, provide the power consumption control signals to corresponding port switches, to enable or disable power supplied to respective ports;
- and
- a signal bus connected to the master controller and the plurality of control circuits;
- wherein, the signal bus is a serial bus.
14 more elements
Dependencies are inferred from the claim text.