A poe power supply control device and poe power supply system

Abstract

The invention discloses a POE power supply control device, comprising: an input module, a boost control module, a through switch, a central control module and an interface module, the boost control module includes a voltage comparison unit and a boost unit, and the interface module includes several interfaces , used to connect to the POE power receiving end; the voltage comparison unit judges whether to boost the voltage input by the input module; if so, enables the boost unit, and the boost unit outputs the boosted voltage to the interface module; if not, Then enable the pass-through switch, and the pass-through switch outputs the voltage to the interface module; when the central control module responds to the power management command sent by the voltage comparison unit, according to the connection status between the POE power receiving end and the interface module and the power application command sent by the POE power receiving end Performs power management on the interface module. The invention also discloses a POE power supply system. The embodiment of the present invention can effectively expand the power supply distance of the standard POE to realize the relay function; at the same time, it can allocate and manage the power to realize the Hub function.

Description

technical field [0001] The present invention relates to the technical field of POE power supply, in particular to a POE power supply control device and a POE power supply system. Background technique [0002] In recent years, there has been a network cable as the medium, through the POE (POE, Power Over Ethernet) power supply system for some IP-based terminal IPAP, network camera, network phone, PDA and other equipment to transmit data signals At the same time, it can also provide DC power supply technology for such devices. The use of POE power delivery systems eliminates the need to install wall power connections for end devices, thus greatly reducing the applied costs associated with supporting end devices. [0003] At present, the latest 802.3bt PoE protocol supports Type3 / 4 power level and can transmit a maximum power of 90W. However, the standard PoE power supply itself has a limited transmission distance, and most of the standard PoE relay devices on the market do n...

AI Technical Summary

Problems solved by technology

However, the standard PoE power supply itself has a limited transmission distance. Most of the standard PoE relay devices on the market do not have a boost function, which results in a limited transmission distance.

In addition, because it does not have the relay function to extend the transmission distance of PoE power, it cannot perform power management

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