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POE power supply method and device and storage medium

A power supply method and technology for power supply equipment, applied in the field of mobile communications, can solve the problems of complex abnormal paths of side handshake signals, inability to identify PDs, inability to correctly classify, etc.

Active Publication Date: 2019-07-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Incorrect return path, resulting in the inability to identify legitimate PDs or incorrectly classify PDs
[0005] (2) The abnormal path of the handshake signal on the PSE side is complicated
The POE handshake signal path is different from the power supply path. The handshake signal is a pulse signal. During the POE handshake process, the pulse detection signal may pass through a capacitive load with lower impedance, such as the Y capacitor and X capacitor on the PSE side, and flow back to the PSE power input terminal, resulting in failure. Realize normal classification detection

Method used

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  • POE power supply method and device and storage medium
  • POE power supply method and device and storage medium
  • POE power supply method and device and storage medium

Examples

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Embodiment Construction

[0035] An embodiment of the present invention provides a POE power supply method, figure 1 The flow chart of sending backflow signal for PD in the embodiment of the present invention, such as figure 1 Said, said method comprises the following steps:

[0036] In step S101, the PD receives the detection signal sent by the PSE at the positive pole.

[0037] Here, the detection signal is current or voltage.

[0038] Step S102, the PD responds to the detection signal, and sends a return signal carrying PD circuit information to the negative pole of the PSE.

[0039] Here, the PD circuit information includes a resistance value of a characteristic resistor of the PD. The return signal is current or voltage. If the detection signal in the step S101 is a current, the return signal is the voltage corresponding to the current passing through the characteristic resistance of the PD; if the detection signal in the step S101 is a voltage, the return signal is the The voltage correspond...

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Abstract

The embodiment of the invention provides a POE power supply method and device and a storage medium, and the method comprises the steps that a powered device PD receives a detection signal sent by a power supply device PSE at a positive electrode; the PD responds to the detection signal and sends a backflow signal carrying PD circuit information to the negative electrode of the PSE; and before thePD sends the backflow signal, the PD turns off the grounding switch of the PD.

Description

technical field [0001] The present invention relates to the field of mobile communications, and in particular to a Power over Ethernet (POE) power supply method, device and storage medium. Background technique [0002] Power over Ethernet is a standard specification that uses existing standard Ethernet transmission cables to simultaneously transmit data and electric power, and it maintains compatibility with existing Ethernet systems and users. Realize injecting power into the common-mode tap of the transformer at the sending end of the Ethernet signal, and extracting power energy from the common-mode tap at the receiving end of the Ethernet signal. It involves a series of detection and identification, and there are several voltage and current controls. The corresponding transmitting controller is called power supply equipment (Power Supply Equipment, PSE), and the receiving controller is called powered device or powered device (Powered Device, PD). ). [0003] In general,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/10
CPCH04L12/10
Inventor 张佳洁
Owner ZTE CORP
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