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Power device detection circuit, method for detecting power device, and power device

A detection circuit and power device technology, which is applied in the field of power devices and power device detection circuits, can solve the problems of difficult debugging of PD detection schemes, and achieve the effect of difficult debugging, easy implementation, and easy debugging

Active Publication Date: 2018-01-23
BOWEI TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a power device detection circuit, a method for detecting power devices, and a power device, so as to solve the technical problem that the PD detection scheme in the prior art is difficult to debug, and the PD detection scheme in the prior art can only be used for Technical problems in the use of power supply equipment around 40V ~ 55V

Method used

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  • Power device detection circuit, method for detecting power device, and power device
  • Power device detection circuit, method for detecting power device, and power device
  • Power device detection circuit, method for detecting power device, and power device

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Embodiment Construction

[0018] In order to solve the technical problem that the PD detection scheme in the prior art is difficult to debug, and the technical problem that the PD detection scheme in the prior art can only be used by power supply equipment of about 40V ~ 55V, the embodiment of the present invention provides a power equipment The detection circuit, the method for detecting the power equipment and the power equipment, the general idea is as follows:

[0019] Including the PD detection circuit and the PD end part, the PD detection circuit is applied to the PoE device, so that the PoE device with the PD discrimination circuit can correctly detect whether the load is the corresponding PD end with the PD detection circuit or a general Ethernet port, so as to determine Whether the PSE provides external power.

[0020] Through the above solution, the PD discrimination circuit can correctly detect whether the load has a corresponding PD feedback circuit, is not affected by the voltage, can supp...

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Abstract

The invention discloses a power device detection circuit, a method for detecting power devices and a power device, which are applied in the technical field of power supply, and solve the technical problem that the PD detection scheme in the prior art is difficult to debug, and the PD detection in the prior art The technical problem that the solution can only be used by power supply equipment of about 40V ~ 55V. Wherein, the power device detection circuit is applied to the PoE device, and the power device detection circuit includes: a PD polling circuit, a PD discrimination circuit, a first Ethernet port, a power output switch, and a power line switching switch. The technical scheme of the invention can support the use of power supply equipment lower than 40V, and is flexible in use. The adopted feedback discrimination circuit is easy to debug and easier to implement.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a power device detection circuit, a power device detection method and the power device. Background technique [0002] Without making any changes to the existing Ethernet Cat.5 cabling infrastructure, it can transmit data for some IP (Internet Protocol, Internet Protocol)-based terminals (such as IP phones, wireless LAN access points, network cameras, etc.) At the same time as the signal, it can also provide DC power supply technology for such devices. PoE (Power Supply Equipment, Power over Ethernet) technology can ensure the safety of existing structured wiring while ensuring the normal operation of the existing network and minimizing costs. [0003] At present, the PoE standards in the industry mainly include IEEE 802.3af and IEEE802.3at, which support PD (Power Device, power device) power consumption up to 25.5w. In addition, there is also non-standard LTPoE++ widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 李汝虎蔡舒宏欧阳宁
Owner BOWEI TECH
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