Reverse Power over Ethernet system and method and load sharing device and powered device
A technology for power receiving equipment and power supply equipment, applied in the direction of data switching current source, data exchange details, etc., can solve problems such as system instability, power consumption, and lack of fairness, so as to improve system stability and avoid switching back and forth Effect
Active Publication Date: 2018-04-27
CHINA TELECOM CORP LTD
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Problems solved by technology
Due to the difference in the length of the five types of cables, the line resistance is different, resulting in different arrival voltages at ports U1 and U2.
According to the conduction characteristics of the diode, the high-voltage line supplies power to the system, and other lines do not bear the power of the system. There are two problems in this way: on the one hand, it is not fair for high-voltage users to supply power alone; on the other hand, high-voltage users After the line is connected, the online high-voltage user power supply is automatically reselected, causing the system power supply to switch back and forth between different lines, which may easily cause system instability or failure
[0005] In addition, in the above system, as long as a user supplies power to the equipment normally, whether other line users are online or not, the line is always in the normal power supply state, and the power consumption
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0027] In the reverse power over Ethernet technology, in order to solve the unfair problem of being powered by high-voltage users alone, and the switching of power supply ports caused by the change of the voltage extracted from each line when the user goes online and offline, the present invention pro...
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The invention discloses a reverse Ethernet power supply system and method, a load sharing device and a power receiving device, and relates to the field of POE. The reverse power over Ethernet system includes a powered device and a plurality of power supply devices, and each power supply device is connected to the powered device respectively. The powered equipment includes a load sharing device. The load sharing device includes: a plurality of adjustable impedances, a control device and a DC-to-DC converter; the power supply signal of each power supply device is output to the DC-to-DC converter through an adjustable impedance respectively; the control device outputs the output signal of each adjustable impedance. If the output voltage of each adjustable impedance is unbalanced, output the feedback signal to the adjustable impedance to re-adjust the impedance value, so that the output voltage of each adjustable impedance can be balanced; the DC-to-DC converter converts each adjustable impedance The output balanced voltage is converted to DC to provide the power receiving equipment, so as to realize the power supply load sharing, avoid the back and forth switching of the power supply port, and improve the system stability.
Description
technical field [0001] The present invention relates to the field of Power Over Ethernet (POE for short), in particular to a reverse Ethernet power supply system and method, a load sharing device and a power receiving device. Background technique [0002] During the construction of FTTx (optical fiber access) network, some communities or buildings have power supply difficulties. Using reverse power over Ethernet technology can effectively solve the problem of power supply difficulties and promote the smooth progress of FTTx network construction. [0003] Ethernet technology refers to the technology that uses the existing Ethernet five-category (Cat.5) wiring to provide DC power supply while transmitting data signals. Reverse Power over Ethernet technology uses the power supply equipment (Power Sourcing Equipment, PSE for short) in the user's home to reversely supply power to the network equipment through the five-category line, so as to solve the power supply problem of the ...
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IPC IPC(8): H04L12/10
Inventor 庄湛海兰潮叶何亮余丹高小兵叶玉剑殴振猛朱宜兵
Owner CHINA TELECOM CORP LTD