Receiver equipment

Abstract

A power receiving end device is electrically connected to a power supply end and is used to receive a voltage signal from the power supply end. The power receiving end device includes a rectification unit, an identification unit, a control unit, a converter and a power receiving circuit. The identification unit is used to identify whether the power supply terminal is an Ethernet power supply terminal or a DC power supply terminal, and decides whether to output an auxiliary power supply signal and a corresponding identification signal according to the identification result. The control unit is used for controlling whether to output the negative voltage signal received from the rectification unit according to the voltage value of the positive voltage signal output by the rectification unit and the voltage value of the corresponding identification signal. The converter converts the received positive voltage signal and negative voltage signal into a voltage applicable to the power receiving circuit to drive the power receiving circuit. Through a simple architecture, the power receiving end device is fed by a single interface and can automatically identify whether it is connected to the Ethernet power supply end or the DC power supply end, and does not require an additional power divider to reduce costs.

Description

technical field [0001] The invention relates to equipment power supply technology, in particular to a power receiving terminal equipment. Background technique [0002] Power Over Ethernet (POE) refers to powering some Internet Protocol (Internet Protocol, IP)-based terminal equipment (such as IP telephones, Wireless LAN access points, network cameras, etc.) while transmitting data signals, it can also provide DC power supply for such devices. [0003] Generally, the receiving end equipment that obtains power through the Power over Ethernet technology usually does not need to obtain power from the power supply. However, it is still not enough to use Power over Ethernet technology alone. Once the Power over Ethernet system fails to supply power normally, the receiving end equipment will not be able to continue to operate. At this time, it needs to be powered by DC power supply. The functions of the power supply circuit and the DC power supply circuit are different, so the po...

AI Technical Summary

Problems solved by technology

However, it is still not enough to use Power over Ethernet technology alone. Once the Power over Ethernet system fails to supply power normally, the receiving end equipment will not be able to continue to operate. At this time, it needs to be powered by DC power supply. The functions of the power supply circuit and the DC power supply circuit are different, so the power over Ethernet and the DC power supply need to be connected to the terminal equipment through different interfaces, and a power divider is also required to realize power distribution.

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