CN109039659B - Fast reverse power supply system and local side equipment - Google Patents
Fast reverse power supply system and local side equipment Download PDFInfo
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- CN109039659B CN109039659B CN201810612427.5A CN201810612427A CN109039659B CN 109039659 B CN109039659 B CN 109039659B CN 201810612427 A CN201810612427 A CN 201810612427A CN 109039659 B CN109039659 B CN 109039659B
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Abstract
The invention discloses a G.fast reverse power supply system, which comprises: the system comprises a G.fast terminal circuit, a terminal signal coupling circuit, a PSE power supply module, a terminal signal interface, a G.fast local side circuit, a local side signal coupling circuit, a PD powered module and a local side signal interface; the G.fast terminal circuit, the terminal signal coupling circuit and the PSE power supply module are sequentially connected, and the terminal signal interface is connected in parallel between the terminal signal coupling circuit and the PSE power supply module; the G.fast local side circuit, the local side signal coupling circuit and the PD powered module are sequentially connected, and the local side signal interface is connected in parallel between the local side signal coupling circuit and the PD powered module; and the terminal telephone line interface of the terminal signal interface is connected with the local side telephone line interface of the local side signal interface through a telephone line. The G.fast reverse power supply system can realize reverse power supply of the G.fast technology based on the telephone line.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a g.fast reverse power supply system and a local side device.
Background
The novel digital subscriber line G.fast technology can utilize the existing copper cable to realize the transmission rate of 1Gbps, and meanwhile, the reverse power supply technology can enable operators to be free of a special alternating-current power supply, so that equipment installation is more convenient to realize more efficient and lower-cost network deployment.
The traditional power over ethernet (PoE) technology is to transmit power via an ethernet cable, that is, a power supply device (PSE) at one end of the ethernet cable converts 220V ac power into 48V dc power and transmits the dc power to a Powered Device (PD) at the other end of the ethernet cable, and the PD converts the 48V dc power into dc power with lower voltage and supplies the dc power to a terminal device, so as to achieve the purpose of power over ethernet cable. The technology of reverse power supply based on telephone lines is different from the traditional PoE technology, which is to supply power to local side equipment through telephone lines by network terminal equipment, and the European Telecommunication Standards Institute (ETSI) in 2014 draws up standards for reverse power supply based on telephone lines to guide and standardize the development of the technology.
However, the g.fast technology is in a primary development stage at present, the g.fast reverse power supply technology based on the telephone line is not standardized, and a specific scheme for realizing the g.fast reverse power supply technology is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a G.fast reverse power supply system and local side equipment, which can realize reverse power supply of the G.fast technology based on a telephone line without designing an additional power supply circuit for the G.fast technology.
The embodiment of the invention provides a G.fast reverse power supply system, which comprises: the system comprises a G.fast terminal circuit, a terminal signal coupling circuit, a PSE power supply module, a terminal signal interface, a G.fast local side circuit, a local side signal coupling circuit, a PD powered module and a local side signal interface;
the G.fast terminal circuit is provided with a terminal input/output port, the terminal signal coupling circuit is provided with two terminal coupling input ends and two terminal coupling output ends, the PSE power supply module is provided with a positive output end and a negative output end, and the terminal signal interface is provided with a first signal interface and a terminal telephone line interface;
a terminal input/output port of the G.fast terminal circuit is connected with two terminal coupling input ends of the terminal signal coupling circuit, two terminal coupling output ends of the terminal signal coupling circuit are respectively connected with a positive output end and a negative output end of the PSE power supply module through a first connecting wire and a second connecting wire, and a terminal signal interface is connected in parallel between the first connecting wire and the second connecting wire through a first signal interface;
the g.fast local side circuit has a local side input/output port, the local side signal coupling circuit has two local side coupling input terminals and two local side coupling output terminals, the PD power receiving module has a positive power receiving terminal and a negative power receiving terminal, and the local side signal interface has a second signal interface and a local side telephone line interface;
a local side input/output port of the g.fast local side circuit is connected with two local side coupling input ends of the local side signal coupling circuit, the two local side coupling output ends of the local side signal coupling circuit are respectively connected with a positive power receiving end and a negative power receiving end of the PD power receiving module through a third connecting line and a fourth connecting line, and the local side signal interface is connected in parallel between the third connecting line and the fourth connecting line through a second signal interface;
and the terminal telephone line interface of the terminal signal interface is connected with the local side telephone line interface of the local side signal interface through a telephone line.
Compared with the prior art, the g.fast reverse power supply system in the embodiment of the invention is characterized in that a terminal signal coupling circuit connected with a g.fast terminal circuit and a PSE power supply module connected with the terminal signal coupling circuit are arranged at a client terminal, a local side signal coupling circuit connected with the g.fast local side circuit and a PD power receiving module connected with the local side signal coupling circuit are arranged at a local side, and a terminal signal interface connected in parallel between the terminal signal coupling circuit and the PSE power supply module is connected with a local side signal interface connected in parallel between the local side signal coupling circuit and the PD power receiving device through a telephone line, so that the g.fast signal of the client terminal and the g.fast signal of the local side can be coupled to the telephone line while the PSE power supply module supplies power to the g.fast terminal circuit and the terminal signal coupling circuit and supplies power to the PD module, the local side signal coupling circuit and the g.fast local side circuit through the telephone line, and realizing interaction of the fast signal. The G.fast reverse power supply system provided by the embodiment of the invention can realize reverse power supply of the G.fast technology based on the telephone line, realizes communication of the G.fast signal, does not need to additionally design a power supply circuit for the G.fast technology, and is simple to deploy.
Further, the PSE power supply module and the PD powered module are configured to comply with an ieee802.3af protocol standard or an ieee802.3at protocol standard.
Furthermore, the terminal signal coupling circuit comprises a terminal signal coupling transformer and a terminal blocking capacitor;
the terminal signal coupling transformer is provided with two input ends and two output ends, the two input ends of the terminal signal coupling transformer are two terminal coupling input ends of the terminal signal coupling circuit, and the two output ends of the terminal signal coupling transformer are respectively connected with the first connecting line and the second connecting line; the terminal blocking capacitor is connected in series with a connecting wire connecting the terminal signal coupling transformer and the second connecting wire;
the local side signal coupling circuit comprises a local side signal coupling transformer and a local side DC blocking capacitor;
the local side signal coupling transformer is provided with two input ends and two output ends, the two input ends of the local side signal coupling transformer are two terminal coupling input ends of the local side signal coupling circuit, and the two output ends of the local side signal coupling transformer are respectively connected with the third connecting wire and the fourth connecting wire; the local side direct current blocking capacitor is connected in series with a connecting line of the local side signal coupling transformer and the fourth connecting line.
The terminal signal coupling transformer and the local side signal coupling transformer are respectively used for coupling G.fast signals of a G.fast terminal circuit and G.fast local side circuits to a telephone line, and the terminal blocking capacitor and the local side blocking capacitor are used for preventing the power supply voltage of the PSE power supply module from interfering the G.fast signals.
Furthermore, the terminal signal coupling circuit further comprises a terminal bidirectional TVS tube, and the terminal bidirectional TVS tube is connected between two output ends of the terminal signal coupling transformer in parallel;
the local side signal coupling circuit further comprises a local side bidirectional TVS tube, and the local side bidirectional TVS tube is connected between the two output ends of the local side signal coupling transformer in parallel.
The terminal bidirectional TVS tube and the local-side bidirectional TVS tube are respectively used for protecting the G.fast terminal circuit and the G.fast local-side circuit.
Furthermore, the number of turns of the terminal signal coupling transformer and the local side signal coupling transformer is 1:1, the inductance is greater than or equal to 12.5uH, the insertion loss is less than 3dB, and the capacitance values of the terminal blocking capacitor and the local side blocking capacitor are 3300 pF-5600 pF.
Furthermore, the system comprises a terminal anti-surge circuit and a local side anti-surge circuit;
the terminal anti-surge circuit comprises a first anti-surge circuit and a second anti-surge circuit, the first anti-surge circuit is connected in series on the first connecting line, and the second anti-surge circuit is connected in series on the second connecting line;
local side surge circuit includes third prevention surge circuit and fourth anti-surge circuit, third prevention surge circuit establishes ties is in on the third connecting wire, fourth anti-surge circuit establishes ties is in on the fourth connecting wire.
Further, the first anti-surge circuit comprises a first resistor and a first inductor which are connected in parallel with each other; the second anti-surge circuit comprises a second resistor and a second inductor which are connected in parallel; the third surge prevention circuit comprises a third resistor and a third inductor which are connected in parallel; the fourth anti-surge circuit comprises a fourth resistor and a fourth inductor which are connected in parallel.
Furthermore, the resistance values of the first resistor, the second resistor, the third resistor and the fourth resistor are 180-330R; the inductance values of the first inductor, the second inductor, the third inductor and the fourth inductor are 33 uH-56 uH.
Another embodiment of the present invention provides a central office device, where the central office device includes: a fast local side circuit, a local side signal coupling circuit, a PD powered module and a local side signal interface;
the g.fast local side circuit has a local side input/output port, the local side signal coupling circuit has two local side coupling input terminals and two local side coupling output terminals, the PD power receiving module has a positive power receiving terminal and a negative power receiving terminal, and the local side signal interface has a second signal interface and a local side telephone line interface;
the local side input/output port of the g.fast local side circuit is connected with two local side coupling input ends of the local side signal coupling circuit, the two local side coupling output ends of the local side signal coupling circuit are respectively connected with the positive power receiving end and the negative power receiving end of the PD power receiving module through a third connecting line and a fourth connecting line, and the local side signal interface is connected in parallel between the third connecting line and the fourth connecting line through a second signal interface.
Drawings
Fig. 1 is a schematic structural diagram of a g.fast reverse power supply system according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a termination signal coupling circuit according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a local side signal coupling circuit according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a PSE power supply module according to a first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a g.fast reverse power supply system according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a terminal device according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a local side device according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a g.fast reverse power supply system according to a first embodiment of the present invention.
The g.fast reverse power supply system comprises a g.fast terminal circuit 100, a terminal signal coupling circuit 200, a PSE power supply module 300, a terminal signal interface 400, a g.fast local side circuit 100 ', a local side signal coupling circuit 200', a PD powered module 300 'and a local side signal interface 400'.
The g.fast termination circuit 100 has termination input/output ports; the terminal signal coupling circuit 200 has two terminal coupling input terminals and two terminal coupling output terminals; the PSE power supply module 300 has a positive input terminal, a negative input terminal, a positive output terminal, and a negative output terminal; the terminal signal interface 400 has a first signal interface and a terminal phone line interface.
A terminal input/output port of the g.fast terminal circuit 100 is connected to two terminal coupling input terminals of the terminal signal coupling circuit 200; two terminal coupling output ends of the terminal signal coupling circuit 200 are respectively connected with a positive output end and a negative output end of the PSE power supply module 300 through a first connecting line a and a second connecting line b; the positive input end and the negative input end of the PSE power supply module 300 are used for accessing mains supply; the terminal signal interface 400 is connected in parallel between the first connection line a and the second connection line b through a first signal interface.
The g.fast local side circuit 100' has a local side input/output port; the local side signal coupling circuit 200' has two local side coupling input ends and two local side coupling output ends; the PD power receiving module 300' has a positive power receiving end and a negative power receiving end; the office signal interface 400' has a second signal interface and an office telephone line interface.
The local side input/output port of the g.fast local side circuit 100 'is connected to the two local side coupling input terminals of the local side signal coupling circuit 200'; two local side coupling output ends of the local side signal coupling circuit 200 'are respectively connected with the positive electrode power receiving end and the negative electrode power receiving end of the PD power receiving module 300' through a third connecting line c and a fourth connecting line d; the office signal interface 400' is connected in parallel between the third connection line c and the fourth connection line d through a second signal interface.
The terminal telephone line interface of the terminal signal interface 400 is connected to the office telephone line interface of the office signal interface 400' via a telephone line.
In this embodiment, the PSE power supply module 300 and the PD powered module 300' are configured to comply with the ieee802.3af protocol standard or the ieee802.3at protocol standard.
In this embodiment, the terminal signal interface 400 and the local signal interface 400' are both RJ11 interfaces.
In the g.fast reverse power supply system of this embodiment, a terminal signal coupling circuit connected to a g.fast terminal circuit and a PSE power supply module connected to the terminal signal coupling circuit are disposed at a client terminal, a local side signal coupling circuit connected to the g.fast local side circuit and a PD power receiving module connected to the local side signal coupling circuit are disposed at a local side, and a terminal signal interface connected in parallel between the terminal signal coupling circuit and the PSE power supply module is connected to a local side signal interface connected in parallel between the local side signal coupling circuit and the PD power receiving device through a telephone line, so that the g.fast signal of the client terminal and the g.fast signal of the local side can be coupled to the telephone line while the PSE power supply module supplies power to the g.fast terminal circuit and the terminal signal coupling circuit and supplies power to the PD power receiving module, the local side signal coupling circuit and the g.fast local side circuit through the telephone line, and realizing interaction of the fast signal.
Fig. 2-3 are schematic structural diagrams of the terminal signal coupling circuit and the local signal coupling circuit according to the present embodiment, respectively.
As shown in fig. 2, the termination signal coupling circuit 200 includes a termination signal coupling transformer T1, a termination dc blocking capacitor C1, and a termination bidirectional TVS transistor D1.
The terminal signal coupling transformer T1 has two inputs and two outputs. Two input ends of the terminal signal coupling transformer T1 are two terminal coupling input ends of the terminal signal coupling circuit 200, and two output ends of the terminal signal coupling transformer T1 are respectively connected to the first connection line a and the second connection line b. The terminal blocking capacitor C1 is connected in series to the connection line between the terminal signal coupling transformer T1 and the second connection line b. The terminal bidirectional TVS tube D1 is connected in parallel to the two outputs of the terminal signal coupling transformer T1 and is located between the terminal signal coupling transformer T1 and the terminal blocking capacitor C1.
As shown in fig. 3, the local side signal coupling circuit 200' includes a local side signal coupling transformer T2, a local side dc blocking capacitor C2, and a local side bidirectional TVS transistor D2.
The local side signal coupling transformer T2 has two input terminals and two output terminals. Two input ends of the office signal coupling transformer T2 are two terminal coupling input ends of the office signal coupling circuit 200', and two output ends of the office signal coupling transformer T2 are connected to the third connection line c and the fourth connection line d, respectively. The local side dc blocking capacitor C2 is connected in series to the connection line between the local side signal coupling transformer T2 and the fourth connection line d. The local side bidirectional TVS tube D2 is connected in parallel to two output terminals of the local side signal coupling transformer T2 and is located between the local side signal coupling transformer T2 and the local side dc blocking capacitor C2.
In this embodiment, the number of turns of the terminal signal coupling transformer T1 and the local side signal coupling transformer T2 is 1:1, the inductance is greater than or equal to 12.5uH, and the insertion loss is less than 3 dB. The capacitance values of the terminal blocking capacitor C1 and the local side blocking capacitor C2 are 3300 pF-5600 pF.
In this embodiment, the termination signal coupling transformer T1 and the office signal coupling transformer T2 are respectively used to couple the g.fast signals of the g.fast termination circuit 100 and the g.fast office circuit 100' to the telephone line. The terminal blocking capacitor C1 and the local side blocking capacitor C2 are used to prevent the power supply voltage of the PSE power supply module 300 from interfering with the g.fast signal. The terminal bidirectional TVS transistor D1 and the local bidirectional TVS transistor D2 are respectively used for protecting the g.fast terminal circuit and the g.fast local side circuit.
Referring to fig. 4, which is a schematic structural diagram of the PSE power supply module in this embodiment, the PSE power supply module 300 includes an AC-DC conversion circuit 301 and a PD detection circuit 302, and the AC-DC conversion circuit 301 is connected to the PD detection circuit 302. The PD detection circuit 302 is configured to detect whether a PD powered module exists in a local side device accessing the terminal signal interface 400, and determine whether to control the AC-DC conversion circuit 301 to convert the commercial power into a direct current for the PD powered module according to a detection result.
In this embodiment, the positive input terminal and the negative input terminal of the PSE power supply module 300 are connected to the mains to convert the AC power through the AC-DC conversion circuit 301 and supply the AC power to the terminal signal coupling circuit 200 and the g.fast terminal circuit 100. When the PSE power supply module 300 detects that a PD powered module 300 'exists in the office device, the AC-DC conversion circuit 301 converts 220V AC power into corresponding DC power according to the power requirement of the PD powered module 300', and supplies the DC power to the PD powered module 300 'through a telephone line, and then the PD powered module 300' supplies power to the office signal coupling circuit 200 'and the g.fast office circuit 100', so as to implement reverse power supply based on the telephone line. Meanwhile, the g.fast signal of the g.fast terminal circuit 100 is coupled to a telephone line connected to the terminal signal interface 400 through a terminal signal coupling circuit 200 composed of a terminal signal coupling transformer T1, a terminal blocking capacitor C1 and a terminal bidirectional TVS transistor D1, so as to be transmitted to the g.fast local side circuit 100'; the g.fast signal of the g.fast local side circuit 100 ' is also coupled to the telephone line connected to the local side signal interface 400 ' through the local side signal coupling circuit 200 ' composed of the local side signal coupling transformer T2, the local side dc blocking capacitor C2, and the local side bidirectional TVS tube D2, so as to be transmitted to the g.fast terminal circuit 100, thereby completing the g.fast signal processing and realizing the communication of the g.fast signal.
Compared with the prior art, in the g.fast reverse power supply system of this embodiment, the terminal signal coupling circuit connected to the g.fast terminal circuit and the PSE power supply module connected to the terminal signal coupling circuit are disposed at the client terminal, the local side signal coupling circuit connected to the g.fast local side circuit and the PD power receiving module connected to the local side signal coupling circuit are disposed at the local side, and the terminal signal interface connected in parallel between the terminal signal coupling circuit and the PSE power supply module is connected to the local side signal interface connected in parallel between the local side signal coupling circuit and the PD power receiving device through the telephone line, so that the g.fast signal of the client terminal and the g.fast signal of the local side can be coupled to the telephone line while the PSE power supply module supplies power to the g.fast terminal circuit and the terminal signal coupling circuit through the telephone line and the PD power receiving module, the local side signal coupling circuit and the g.fast local side circuit are supplied power, and realizing interaction of the fast signal. The G.fast reverse power supply system provided by the embodiment of the invention can realize reverse power supply of the G.fast technology based on the telephone line, realizes communication of the G.fast signal, does not need to additionally design a power supply circuit for the G.fast technology, and is simple to deploy.
Fig. 5 is a schematic structural diagram of a g.fast reverse power supply system according to a second embodiment of the present invention. The present embodiment differs from the first embodiment in that:
the g.fast reverse power supply system further includes a terminal anti-surge circuit 500 and a local anti-surge circuit 500'.
The terminal anti-surge circuit 500 includes a first anti-surge circuit 501 and a second anti-surge circuit 502. The first anti-surge circuit 501 is connected in series to the first connection line a, and the second anti-surge circuit 502 is connected in series to the second connection line b. The first anti-surge circuit 501 comprises a first resistor R1 and a first inductor L1 which are connected in parallel with each other; the second anti-surge circuit 501' includes a second resistor R2 and a second inductor L2 connected in parallel.
The local side surge circuit 500 ' includes a third surge circuit 501 ' and a fourth surge circuit 502 ', the third surge circuit 501 ' is connected in series to the third connection line c, and the fourth surge circuit 502 ' is connected in series to the fourth connection line b. The third surge protection circuit 501' comprises a third resistor R3 and a third inductor L3 which are connected in parallel; the fourth anti-surge circuit 502' includes a fourth resistor R4 and a fourth inductor L4 connected in parallel.
In this embodiment, the resistance values of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are 180R to 330R; the inductance values of the first inductor L1, the second inductor L2, the third inductor L3 and the fourth inductor L4 are 33 uH-56 uH.
The terminal anti-surge circuit 500 and the local side anti-surge circuit 500' are used for suppressing conducted interference and surge protection, so as to ensure that the electrical signal of the PSE power supply module 300 does not affect the quality of the g.fas signal.
Fig. 6 is a schematic structural diagram of a terminal device according to a third embodiment of the present invention.
The terminal equipment comprises a g.fast terminal circuit 100, a terminal signal coupling circuit 200, a PSE power supply module 300 and a terminal signal interface 400.
The g.fast termination circuit 100 has termination input/output ports; the terminal signal coupling circuit 200 has two terminal coupling input terminals and two terminal coupling output terminals; the PSE power supply module 300 has a positive output terminal and a negative output terminal; the terminal signal interface 400 has a first signal interface and a terminal phone line interface.
A terminal input/output port of the g.fast terminal circuit 100 is connected to two terminal coupling input terminals of the terminal signal coupling circuit 200; two terminal coupling output ends of the terminal signal coupling circuit 200 are respectively connected with a positive output end and a negative output end of the PSE power supply module 300 through a first connecting line a and a second connecting line b; the terminal signal interface 400 is connected in parallel between the first connection line and the second connection line through the first signal interface.
In this embodiment, the PSE power supply module 300 is configured to comply with the ieee802.3af protocol standard or the ieee802.3at protocol standard.
In this embodiment, the terminal device further includes a terminal anti-surge circuit 500. The terminal anti-surge circuit 500 includes a first anti-surge circuit 501 and a second anti-surge circuit 502. The first anti-surge circuit 501 is connected in series to the first connection line a, and the second anti-surge circuit 502 is connected in series to the second connection line b. The first anti-surge circuit 501 comprises a first resistor R1 and a first inductor L1 which are connected in parallel with each other; the second anti-surge circuit 502 includes a second resistor R2 and a second inductor L2 connected in parallel.
The terminal device in this embodiment is used to connect with a local side device matched with the terminal phone line interface of the terminal signal interface 400, so as to form a g.fast reverse power supply system, and implement deployment and application of the g.fast technology.
Fig. 7 is a schematic structural diagram of a central office device according to a fourth embodiment of the present invention.
The local side device includes a g.fast local side circuit 100 ', a local side signal coupling circuit 200', a PD powered module 300 ', and a local side signal interface 400'.
The g.fast local side circuit 100' has a local side input/output port; the local side signal coupling circuit 200' has two local side coupling input ends and two local side coupling output ends; the PD power receiving module 300' has a positive power receiving end and a negative power receiving end; the office signal interface 400' has a second signal interface and an office telephone line interface.
The local side input/output port of the g.fast local side circuit 100 'is connected to the two local side coupling input terminals of the local side signal coupling circuit 200'; two local side coupling output ends of the local side signal coupling circuit 200 ' are respectively connected with the positive electrode power receiving end and the negative electrode power receiving end of the PD power receiving module 300 ' through a third connecting line c and a fourth connecting line d, and the local side signal interface 400 ' is connected in parallel between the third connecting line and the fourth connecting line through a second signal interface.
In this embodiment, the PD powered module 300' is configured to comply with the ieee802.3af protocol standard or the ieee802.3at protocol standard.
In this embodiment, the office device further includes an office anti-surge circuit 500'. The local side anti-surge circuit 500 ' comprises a third anti-surge circuit 501 ' and a fourth anti-surge circuit 502 '. The third anti-surge circuit 501 'is connected in series to the third connection line c, and the fourth anti-surge circuit 502' is connected in series to the fourth connection line d. The third surge protection circuit 501' comprises a third resistor R3 and a third inductor L3 which are connected in parallel; the fourth anti-surge circuit 502' includes a fourth resistor R4 and a fourth inductor L4 connected in parallel.
The office device in this embodiment is configured to connect with a terminal device matched with the office device through the telephone line interface of the office signal interface 400', so as to form a g.fast reverse power supply system, and implement deployment and application of the g.fast technology.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A G.fast reverse power supply system, comprising:
the system comprises a G.fast terminal circuit, a terminal signal coupling circuit, a PSE power supply module, a terminal signal interface, a G.fast local side circuit, a local side signal coupling circuit, a PD powered module and a local side signal interface;
the G.fast terminal circuit is provided with a terminal input/output port, the terminal signal coupling circuit is provided with two terminal coupling input ends and two terminal coupling output ends, the PSE power supply module is provided with a positive output end and a negative output end, and the terminal signal interface is provided with a first signal interface and a terminal telephone line interface;
a terminal input/output port of the G.fast terminal circuit is connected with two terminal coupling input ends of the terminal signal coupling circuit, two terminal coupling output ends of the terminal signal coupling circuit are respectively connected with a positive output end and a negative output end of the PSE power supply module through a first connecting wire and a second connecting wire, and a terminal signal interface is connected in parallel between the first connecting wire and the second connecting wire through a first signal interface;
the g.fast local side circuit has a local side input/output port, the local side signal coupling circuit has two local side coupling input terminals and two local side coupling output terminals, the PD power receiving module has a positive power receiving terminal and a negative power receiving terminal, and the local side signal interface has a second signal interface and a local side telephone line interface;
a local side input/output port of the g.fast local side circuit is connected with two local side coupling input ends of the local side signal coupling circuit, the two local side coupling output ends of the local side signal coupling circuit are respectively connected with a positive power receiving end and a negative power receiving end of the PD power receiving module through a third connecting line and a fourth connecting line, and the local side signal interface is connected in parallel between the third connecting line and the fourth connecting line through a second signal interface;
and the terminal telephone line interface of the terminal signal interface is connected with the local side telephone line interface of the local side signal interface through a telephone line.
2. The g.fast reverse power supply system according to claim 1, wherein:
the PSE power supply module and the PD powered module are arranged according to an IEEE802.3af protocol standard or an IEEE802.3at protocol standard.
3. The g.fast reverse power supply system according to claim 1, wherein:
the terminal signal coupling circuit comprises a terminal signal coupling transformer and a terminal blocking capacitor;
the terminal signal coupling transformer is provided with two input ends and two output ends, the two input ends of the terminal signal coupling transformer are two terminal coupling input ends of the terminal signal coupling circuit, and the two output ends of the terminal signal coupling transformer are respectively connected with the first connecting line and the second connecting line; the terminal blocking capacitor is connected in series with a connecting wire connecting the terminal signal coupling transformer and the second connecting wire;
the local side signal coupling circuit comprises a local side signal coupling transformer and a local side DC blocking capacitor;
the local side signal coupling transformer is provided with two input ends and two output ends, the two input ends of the local side signal coupling transformer are two terminal coupling input ends of the local side signal coupling circuit, and the two output ends of the local side signal coupling transformer are respectively connected with the third connecting wire and the fourth connecting wire; the local side direct current blocking capacitor is connected in series with a connecting line of the local side signal coupling transformer and the fourth connecting line.
4. The g.fast reverse power supply system according to claim 3, wherein:
the terminal signal coupling circuit also comprises a terminal bidirectional TVS tube which is connected between two output ends of the terminal signal coupling transformer in parallel;
the local side signal coupling circuit further comprises a local side bidirectional TVS tube, and the local side bidirectional TVS tube is connected between the two output ends of the local side signal coupling transformer in parallel.
5. The g.fast reverse power supply system according to claim 3, wherein: the number of turns of the terminal signal coupling transformer and the local side signal coupling transformer is 1:1, the inductance is greater than or equal to 12.5uH, the insertion loss is less than 3dB, and the capacitance values of the terminal blocking capacitor and the local side blocking capacitor are 3300 pF-5600 pF.
6. The g.fast reverse power supply system according to any one of claims 1 to 5, wherein: the system comprises a terminal anti-surge circuit and a local side anti-surge circuit;
the terminal anti-surge circuit comprises a first anti-surge circuit and a second anti-surge circuit, the first anti-surge circuit is connected in series on the first connecting line, and the second anti-surge circuit is connected in series on the second connecting line;
local side surge circuit includes third prevention surge circuit and fourth anti-surge circuit, third prevention surge circuit establishes ties is in on the third connecting wire, fourth anti-surge circuit establishes ties is in on the fourth connecting wire.
7. The g.fast reverse power supply system according to claim 6, wherein: the first anti-surge circuit comprises a first resistor and a first inductor which are connected in parallel; the second anti-surge circuit comprises a second resistor and a second inductor which are connected in parallel; the third surge prevention circuit comprises a third resistor and a third inductor which are connected in parallel; the fourth anti-surge circuit comprises a fourth resistor and a fourth inductor which are connected in parallel.
8. The g.fast reverse power supply system according to claim 7, wherein: the resistance values of the first resistor, the second resistor, the third resistor and the fourth resistor are 180-330R; the inductance values of the first inductor, the second inductor, the third inductor and the fourth inductor are 33 uH-56 uH.
9. An office-side device, characterized by: the office device includes: a fast local side circuit, a local side signal coupling circuit, a PD powered module and a local side signal interface;
the g.fast local side circuit has a local side input/output port, the local side signal coupling circuit has two local side coupling input terminals and two local side coupling output terminals, the PD power receiving module has a positive power receiving terminal and a negative power receiving terminal, and the local side signal interface has a third signal interface and a local side telephone line interface;
the local side input/output port of the g.fast local side circuit is connected with two local side coupling input ends of the local side signal coupling circuit, the two local side coupling output ends of the local side signal coupling circuit are respectively connected with the positive power receiving end and the negative power receiving end of the PD power receiving module through a third connecting line and a fourth connecting line, and the local side signal interface is connected in parallel between the third connecting line and the fourth connecting line through a third signal interface.
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| CN201810612427.5A CN109039659B (en) | 2018-06-13 | 2018-06-13 | Fast reverse power supply system and local side equipment |
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| CN201810612427.5A CN109039659B (en) | 2018-06-13 | 2018-06-13 | Fast reverse power supply system and local side equipment |
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| CN109039659A CN109039659A (en) | 2018-12-18 |
| CN109039659B true CN109039659B (en) | 2021-06-04 |
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| CN111966010B (en) * | 2020-07-30 | 2022-05-03 | 深圳市普威技术有限公司 | Signal access module, control method and signal access equipment |
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