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Poe power compensation method and power supply equipment

A technology of power supply equipment and power compensation, applied in the direction of data switching current source, data exchange details, etc., can solve the problem that the power cannot reach the negotiated power, etc.

Active Publication Date: 2019-04-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a PoE power compensation method and power supply equipment, which are used to solve the problem that sometimes the power obtained by the PD connected to the PSE cannot reach the negotiated power

Method used

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  • Poe power compensation method and power supply equipment
  • Poe power compensation method and power supply equipment
  • Poe power compensation method and power supply equipment

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] figure 1 It is a flow chart of Embodiment 1 of the PoE power compensation method of the present invention, such as figure 1 As shown, the specific steps of the method are as follows:

[0055] S101: The PSE obtains the resistance of the Ethernet cable between the PSE and the PD to be powered.

[0056] The PSE is connected to the PD through an Ethernet cable, and the Ethernet cable has power loss during the power supply process. The PSE can obtain the resistan...

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Abstract

The invention provides a PoE power compensation method and PSE. The method comprises that the PSE obtains the resistance of an Ethernet line between the PSE and a PD (Powered Device) to supply; according to the output voltage of the PSE, the negotiation power, obtained by the PSE in advance, of the PD and the resistance of the Ethernet line, the PSE calculates compensation power; the PSE uses the sum of the negotiation power and the compensation power as output power; and the PSE supplies power to the PD via the Ethernet line according to the output power. The PSE detects the resistance of the Ethernet line to compensate the power output to the PD in real time as well as power loss in the Ethernet line, namely sufficient power is provided for the PD, and the PD is prevented from abnormal conditions as repeated power on / off due to the fact that sufficient power is not obtained.

Description

technical field [0001] Embodiments of the present invention relate to a network power supply technology, and in particular to a Power over Ethernet (English: Power overEthernet, abbreviated: PoE) power compensation method and power sourcing equipment (English: power sourcing equipment, abbreviated: PSE). Background technique [0002] The devices in the PoE system are divided into a power supply device and a powered device (English: powered device, PD for short), and the power supply device supplies power to the powered device through an Ethernet cable. [0003] PSE power negotiation mainly includes physical layer hierarchical negotiation and link layer protocol power negotiation. In physical layer grading negotiation power, the PSE classifies the output current according to the current level of the PD, and then outputs power according to the grading current. Link layer protocol power negotiation is the power consumption required by the PSE and PD communication to obtain the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/10
Inventor 杨建光付世勇华睿
Owner HUAWEI TECH CO LTD