A cascaded Ethernet power supply system and Ethernet power supply method

Abstract

The invention provides a cascaded Ethernet power supply system and an Ethernet power supply method thereof, wherein the Ethernet power supply method comprises the following steps that: each PD (Power Device) is connected with PSE (Power Sourcing Equipment) to form a POE (Power On Ethernet) system by adopting a cascading type; a POE power supply module in the PSE device is started, and a POE control unit of a local end outputs a power supply power to each Ethernet interface; in a process of outputting the power supply power, each PD receives the power supply power output by a superior device through the Ethernet interface, firstly power is supplied for a load of the local end, and surplus power supply power is output to the next stage of PD through the Ethernet interface. According to the embodiment of the invention, the POE system is constructed by adopting the cascading type, on the premise of supplying power for multiple small-power-consumption PDs by the PSE device, port resources of the PSE device can be saved, a power supply line is simplified, and the power supply power out by the PSE device is reasonably and effectively utilized.

Description

technical field [0001] The invention relates to the technical field of Ethernet power supply, in particular to a cascaded Ethernet power supply system and an Ethernet power supply method. Background technique [0002] POE (Power on Ethernet, Power over Ethernet) refers to the transmission of data signals for some network terminal equipment without any changes to the existing Ethernet Category 5 twisted-pair cabling infrastructure. This type of equipment provides DC power supply technology. POE technology can guarantee the normal operation of the existing network while ensuring the safety of the existing structured wiring. A complete POE system includes two parts: power supply equipment (PSE, Power Sourcing Equipment) and power receiving equipment (PD, Power Device) . The PSE device is a device that supplies power to Ethernet client devices, and is also the manager of the entire POE Power over Ethernet process. The PD device is the PSE load receiving power supply, and the ...

AI Technical Summary

Problems solved by technology

[0004] With the application of routers, switches and other data communication devices using POE technology more and more widely, there are more and more PD devices. However, the number of Ethernet ports on the PSE device is limited. When a PD device with low power consumption is used for power supply, it not only needs to occupy more port resources, but also realizes complicated wiring.

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