POE load detecting method and power supply terminal equipment

A power supply device and load detection technology, which is applied in the network field, can solve problems such as being stained with debris, unable to supply power to equipment, and unable to supply power to POE equipment, so as to achieve the effect of maintaining compatibility

Active Publication Date: 2010-10-13
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
View PDF4 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of POE detection, this resistance is connected in parallel with the effective PD characteristic resistance (RE//RPD), and the characteristic resistance detected by the PSE becomes smaller, which often makes the PSE terminal judge that the PD load is invalid, so it cannot supply power to the device.
[0020] 2. After the n

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • POE load detecting method and power supply terminal equipment
  • POE load detecting method and power supply terminal equipment
  • POE load detecting method and power supply terminal equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] The second embodiment, because the equivalent additional resistance R within a certain period of time E The change will not be too great, so the present invention also provides another implementation scheme, which can also include steps such as Figure 5 Shown:

[0058] In step 501, the power supply end device PSE outputs a first specified voltage value at the output end of the POE control circuit, and detects the equivalent additional resistance (R E ), and save the resistance value of the equivalent additional resistance. Among them, the first specified voltage value generally selects a value between 0-0.5V.

[0059] Since most PD devices need a bridge rectifier circuit at the Ethernet power supply end, such as image 3 As shown in the PD circuit on the right side, it can be used to simultaneously accept 100M network data line pairs (1 / 2, 3 / 6) and 100M network idle line pairs (4 / 5, 7 / 8). The bridge rectifier circuit requires a conduction voltage that is generally greater t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a POE load detecting method and power supply terminal equipment. The method comprises the steps that the power supply terminal equipment PSE outputs a first specified voltage value at the output end of a POE control circuit, equivalent additional resistance is detected when no load exists between the POE power supply wire pair; a second specified voltage value is outputtedat the output end of the POE control circuit, first resistance between the POE power supply wire pair is obtained via detection so as to take the first resistance as the parallel equivalent resistance of the equivalent additional resistance and the load resistance; the resistance value of the load resistance is obtained according to the detected first resistance and the equivalent additional resistance so as to determine whether the load resistance value meets preset judging conditions, and the externally connected receiving end equipment PD is determined to be effective if the judging conditions are met. The method and the equipment provided by the invention can detect the equivalent additional resistance, thereby reducing the erroneous judgment on the effectiveness of the externally connected PD.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a POE load detection method and power supply terminal equipment in the process of power supply over Ethernet. Background technique [0002] Power Over Ethernet (POE for short) refers to powering some Ethernet-based terminals (such as IP phones, wireless LAN access points, network camera, etc.) while transmitting data signals, it can also provide DC power supply technology for such devices. A complete POE system includes two parts: power supply equipment (PSE, Power Sourcing Equipment) and power receiving equipment (PD, Power Device). [0003] The Power Sourcing Equipment (PSE) is used to supply power to the Ethernet client device, is responsible for injecting DC power into the Ethernet cable, and also manages the entire POE Power over Ethernet process. [0004] The Power Device (PD) is the PSE load that receives power, that is, the client device of the POE system, such as IP p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/10H04L12/28H04L12/26G01R27/08H02J17/00H02J50/00
Inventor 陈楚
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap