Network power supply control system, network power supply equipment and network power device thereof

Abstract

The invention provides a network power supply control system, network power supply equipment, and a network power device thereof. A network power supply control system is applicable to a network power supply equipment (PSE) and a network power device (PD) connected through a network cable. A signal generator is disposed on the network PSE for generating and combining an operating signal with a power signal provided by the network PSE. A signal analyzer is disposed on the network PD for extracting the operating signal from the power signal received by the network PD and controlling a load circuit of the network PD according to the operating signal. Alternatively, the signal generator is disposed on the PD and sends a operating signal according to a state of the load circuit and combines the operating signal with a return power signal returned by the network PD, and the signal analyzer is disposed on the PSE for extracting the operating signal from the return power signal received by the network PSE.

Description

technical field [0001] The present invention relates to a network power supply control system, in particular to a network power supply control system for controlling the action and state of a network power receiving device through changes in power signals. Background technique [0002] In the prior art, the network power supply technology (Power over Ethernet) is now commonly used in network systems. The system consists of network power supply equipment (Power Supply Equipment, PSE) and network power receiving device (Power Device, PD) connected by network cables. The network power supply equipment provides power, which is transmitted to the network power receiving device through the network cable, so that the power receiving device can operate. During this period, the network power supply equipment is also connected to the network power receiving device through the network cable for packet data transmission. [0003] However, the PoE system is not suitable for the followi...

AI Technical Summary

Problems solved by technology

The network power supply equipment cannot know whether the network power receiving device has actually obtained the data transmitted by the network power supply device, nor can it know that the network power receiving device operates according to the instructions of the network power supply device

Secondly, if there is a failure during the operation of the network power receiving device, such as a crash, it cannot receive packets or instructions to perform related actions, and the network power supply equipment cannot know the operation status of the network power receiving device; Conducting power to the network power receiving device, once the network power receiving device is down, the network power supply equipment will not know whether the output power is used by the network power receiving device, which is wasteful

Third, when many network power receiving devices are connected to network power supply equipment through one-to-many devices (such as switches, routers, smart hubs, etc.), once the network power supply equipment wants to connect one of the electronic devices When performing a remote reset and powering off the electronic device and then re-powering it, the network power supply device can only cut off its own power supply, but this will cause all electronic devices connected to the switch to perform a power reset action, which will affect the overall system Stability and work fluency

Fourth, when the network power supply equipment and the network power receiving device use different network protocols (network protocol), or the data identification formats used by the upper-layer application software of both parties are different, as far as the network architecture is concerned, the first layer and the The second layer has formed a path connection, but the third layer and above fail to complete the data identification and form an open circuit. The network power receiving device will not understand the control command of the network power supply equipment, resulting in the network power receiving device not being powered by the network. The control of the device occurs when the

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