CN106101028A - A kind of Ethernet switch and by electricity power supply circuits - Google Patents
A kind of Ethernet switch and by electricity power supply circuits Download PDFInfo
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- CN106101028A CN106101028A CN201610685638.2A CN201610685638A CN106101028A CN 106101028 A CN106101028 A CN 106101028A CN 201610685638 A CN201610685638 A CN 201610685638A CN 106101028 A CN106101028 A CN 106101028A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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Abstract
The invention belongs to ethernet technology field, it is provided that a kind of Ethernet switch and by electricity power supply circuits.In the present invention, include by electricity module, supply module, motherboard power supply module by employing, be subject to electricity power supply circuits by electro-detection module, control module and exchanger chip, make to be sent unidirectional current to supply module, motherboard power supply module and by electro-detection module by electricity module, and send data to exchanger chip；Supply module is outwards powered according to unidirectional current；Motherboard power supply module carries out voltage conversion and backward is powered by electro-detection module, control module and exchanger chip unidirectional current；By electro-detection module according to unidirectional current output detections signal to control module；Control module is according to detection signal output control signal, exchanger chip is according to the break-make of detection signal control network port, so that data are sent, solve existing POE switch and have that circuit structure is complicated, fault rate high, cost is high and the non-powered uncontrollable problem of the network port.
Description
Technical field
The invention belongs to ethernet technology field, particularly relate to a kind of Ethernet switch and by electricity power supply circuits.
Background technology
At present, active Ethernet (Power Over Ethernet, POE) power supply, powered Ethernet exchanging machine equipment by
It is widely applied in internet arena acquisition in installing the advantages such as simple, easy construction.And the POE switch released on market
Chip functions single, its can only carry out single port power or single port by electricity.
In order to solve the problems referred to above, prior art uses many power supply chips and by electrical chip in POE switch, but
This method makes the circuit structure complexity of POE switch, and then causing trouble rate increases, high in cost of production problem；Additionally, it is above-mentioned
Method is when some network port of POE switch is powered, and not only this supply network port can carry out communication, other network-side
Mouth also can carry out communication, and then causes POE switch problem uncontrollable to the non-powered network port.
In sum, there is circuit structure complexity in existing POE switch, fault rate is high, cost is high and non-powered network
The uncontrollable problem of port.
Summary of the invention
It is an object of the invention to provide a kind of Ethernet switch and by electricity power supply circuits, it is intended to solve existing
There is circuit structure complexity in POE switch, fault rate is high, cost is high and the non-powered uncontrollable problem of the network port.
The present invention be achieved in that a kind of Ethernet switch by electricity power supply circuits, described by electricity power supply circuits with
Externally fed equipment and outside power receiving equipment connect, and described are included by electricity module, supply module, mainboard electricity by electricity power supply circuits
Source module, by electro-detection module, control module and exchanger chip；
Described it is connected with the network port of described exchanger chip by the electricity FPDP of module, described defeated by electric module
Go out end and the input of described supply module, the input of described motherboard power supply module and described by the first of electro-detection module
Input connects；The FPDP of described supply module is connected with the network port of described exchanger chip；Described motherboard power supply
The outfan output services unidirectional current of module, the outfan of described motherboard power supply module and described second defeated by electro-detection module
The voltage input end entering end, the voltage input end of described control module and described exchanger chip connects；Described by electro-detection
The outfan of module is connected with the signal input part of described control module；The signal output part of described control module and described exchange
The signal input part of movement sheet connects；
The described unidirectional current provided by the electricity module described externally fed equipment of reception and data, and described unidirectional current is sent
To described supply module, described motherboard power supply module and described by electro-detection module；Described supply module is according to described direct current
Electricity is powered to described outside power receiving equipment；Described motherboard power supply module carries out voltage conversion to described unidirectional current, and according to conversion
After working direct current electricity powered by electro-detection module, described control module and described exchanger chip to described；Described by electricity
Detection module is according to described unidirectional current output detections signal to described control module；Described detection signal is entered by described control module
Row exports control signal after processing, control signal described in described exchanger chip identification, and according to described control signal Controling network
The break-make of network port, is set by electricity to described outside the described data received by electricity module to be sent through described supply module
Standby.
Another object of the present invention also resides in a kind of Ethernet switch of offer, and described Ethernet switch includes above-mentioned
By electricity power supply circuits.
In the present invention, by employing include by electricity module, supply module, motherboard power supply module, by electro-detection module, control
Molding block and exchanger chip by electricity power supply circuits so that by electricity module, unidirectional current is sent to supply module, mainboard electricity
Source module and by electro-detection module, and send data to exchanger chip；Supply module is subject to electric according to unidirectional current to outside
Equipment is powered；It is backward by electro-detection module, control module and switch that motherboard power supply module carries out voltage conversion to unidirectional current
Chip power supply；By electro-detection module according to unidirectional current output detections signal to control module；Control module is defeated according to detection signal
Going out and control signal to exchanger chip, exchanger chip controls the break-make of the network port according to control signal, data to be passed through
Supply module sends to outside power receiving equipment, owing to this circuit by be subject to electric situation by electro-detection module to Ethernet switch
Detect, and then make the network port of exchanger chip controlled, and this circuit is without using multiple power supply chip and being subject to
Electrical chip, simple in construction, and low cost, solve existing POE switch and there is circuit structure complexity, fault rate height, cost
High and the non-powered uncontrollable problem of the network port.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram by electricity power supply circuits that one embodiment of the invention is provided；
Fig. 2 is the modular structure schematic diagram by electricity power supply circuits that another embodiment of the present invention is provided；
Fig. 3 be one embodiment of the invention provided be subject to electricity module, supply module and mainboard electric by electricity power supply circuits
The electrical block diagram of source module；
Fig. 4 be one embodiment of the invention provided by electricity power supply circuits by electro-detection module, control module and friendship
Change planes the electrical block diagram of chip.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Below in conjunction with concrete accompanying drawing, the realization of the present invention is described in detail:
Fig. 1 shows that the Ethernet switch that one embodiment of the invention is provided is subject to the modular structure of electricity power supply circuits, for
Being easy to explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
As it is shown in figure 1, the electricity power supply circuits that are subject to of embodiment of the present invention offer include by electricity module 10, supply module 11, master
Plate power module 12, by electro-detection module 13, control module 14 and exchanger chip 15.
Wherein, it is connected with the network port of exchanger chip 15 by the electricity FPDP of module 10, is subject to the defeated of electricity module 10
Go out end to be connected with input, motherboard power supply module 12 and the first input end by electro-detection module 13 of supply module 11；Supply
The electricity FPDP of module 11 is connected with the network port of exchanger chip 15；The outfan output services of motherboard power supply module 12
Unidirectional current, and the outfan of motherboard power supply module 12 with by the second input of electro-detection module 13, the electricity of control module 14
The voltage input end of pressure input and exchanger chip 15 connects；Outfan and control module 14 by electro-detection module 13
Signal input part connects；The signal output part of control module 14 is connected with the signal input part of exchanger chip 15.
Concrete, received, by electricity module 10, unidirectional current and the data that externally fed equipment 20 provides, and unidirectional current is sent
To supply module 11, motherboard power supply module 12 and by electro-detection module 13；Supply module 11 according to unidirectional current outside external
Portion's power receiving equipment 30 is powered；Motherboard power supply module 12 carries out voltage conversion to unidirectional current, and according to the working direct current electricity after conversion
Power to by electro-detection module 13, control module 14 and exchanger chip 15；Exported according to unidirectional current by electro-detection module 13
Detection signal is to control module 14；Control module 14 exports control signal, exchanger chip 15 after processing detection signal
Identify control signal, and according to the break-make of the control signal control network port, supply will be passed through by the data that electricity module 10 receives
Electricity module 11 sends to outside power receiving equipment 30.
It should be noted that in the present embodiment, galvanic voltage value is 48V, the value of supply voltage and direct current
The voltage value of electricity is identical, and the voltage value of working direct current electricity is 3.3V.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, included by electrical interface list by electricity module 10
Unit 100 with by electric unit 101.
Wherein, it is the FPDP by electricity module 10 by the data-interface of electric interface unit 100, by electric interface unit 100
Be connected with the input by electric unit 101 by electrical interface, by the outfan of electric unit 101 and being subject to by electric interface unit 100
Electrical interface forms the outfan by electricity module 10.
Concrete, by electric unit 101 by by electric interface unit 100 receive unidirectional current that externally fed equipment 20 provides with
Data, and unidirectional current is sent supply module 11 and motherboard power supply module 12, by electric interface unit 100, unidirectional current is exported to being subject to
Electro-detection module 13, is sent data to exchanger chip 15 by electric interface unit 100.
Further, as the present invention one preferred implementation, as it is shown on figure 3, included multiple being subject to by electric interface unit 100
Electrical interface chip RJ45, is included multiple first diode D1 by electric unit 101.
Multiple data pin Y1 by electrical interface chip RJ45 form the data-interface by electric interface unit 100, Duo Geshou
Electrical interface chip RJ45 voltage pin Y2 composition by electric interface unit 100 by electrical interface, the sun of multiple first diode D1
Pole composition is by the input of electric unit 101, and the negative electrode composition of multiple second diode D1 is by the outfan of electric unit 101, each
Connected one to one with the anode of each first diode D1 by voltage pin Y2 of electrical interface chip RJ45；Need explanation
Be, in the present embodiment, by data pin Y1 of electrical interface chip RJ45 refer to this by the pin 1 of electrical interface chip RJ45 or
Pin 2, or should be referred to this by the pin 3 of electrical interface chip or pin 6 by voltage pin Y2 of electrical interface chip RJ45
By pin 4 or the pin 5 of electrical interface chip RJ45, should be by the pin Y3 ground connection of electrical interface chip RJ45, this pin 3 refers to be subject to
The grounding pin 7 of electrical chip RJ45 or grounding pin 8.
It should be noted that in the present embodiment, the number by electrical interface chip RJ45 in circuit shown in Fig. 3 is 7,
Certainly should be not limited to 7 by the number of electrical interface chip RJ45 interface, its can according to the network port of Ethernet switch with
The number of power supply interface chip U1 is set, such as, when Ethernet switch is 8 mouthfuls of Ethernet switches, and power supply interface
When the number of chip U1 is 1, then as it is shown on figure 3, should be 7 by the number of electrical interface chip RJ45, when Ethernet switch is 8 mouthfuls
Ethernet switch, the and when number of power supply interface chip U1 is 2, then should be 6 etc. by the number of electrical interface chip RJ45, because of
This, knowable to foregoing description, be that Ethernet is handed over by the number of electrical interface chip RJ45 with the number sum of power supply interface chip U1
The port number changed planes；Additionally, should be identical with the number of the first diode D1 by the number of electrical interface chip RJ45.
Furthermore, in the present embodiment, first by voltage pin Y2 of electrical interface chip RJ45 be first by electrical interface
The outfan PWR0 of unit 100, second by voltage pin Y2 of electrical interface chip RJ45 be second by electric interface unit 100
Outfan PWR1, the 3rd is the 3rd output by electric interface unit 100 by voltage pin Y2 of electrical interface chip RJ45
End PWR2, the 4th is the 4th the outfan PWR3 by electric interface unit 100 by voltage pin Y2 of electrical interface chip RJ45,
5th is the 5th the outfan PWR4 by electric interface unit 100 by voltage pin Y2 of electrical interface chip RJ45, the 6th
Being the 6th the outfan PWR5 by electric interface unit 100 by voltage pin Y2 of electrical interface chip RJ45, the 7th is connect by electricity
Voltage pin Y2 of mouthful chip RJ45 is the 7th the outfan PWR6 by electric interface unit 100, and first by electrical interface
The outfan PWR0 of unit 100, second outfan PWR1 by electric interface unit 100, the 3rd by electric interface unit 100
Outfan PWR2, the 4th the outfan PWR3 by electric interface unit 100, the 5th outfan by electric interface unit 100
PWR4, the 6th the outfan PWR5 by electric interface unit 100 and the 7th the outfan PWR6 group by electric interface unit 100
Become the first outfan by electricity module 10.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, supply module 11 includes power supply unit 110
With power supply interface unit 111.
Wherein, the input of power supply unit 110 is the input of supply module 11, the outfan of power supply unit 110 and confession
The power supply interface of electric interface unit 111 connects, and the data-interface of power supply interface unit 111 is the FPDP of supply module 11.
Concrete, power supply unit 110 receives unidirectional current, and is supplied for outside power receiving equipment 30 by power supply interface unit 111
Electricity, this outside power receiving equipment 30 can be IP phone, web camera, the network switch, ONU (Optical Network
Unit, optical network unit) etc. terminal unit.
Further, as the present invention one preferred implementation, as it is shown on figure 3, power supply unit 110 include at least one
Two diode D2, power supply interface unit 111 includes at least one power supply interface chip U1.
Wherein, the input that anode is power supply unit 110 of the second diode D2, the negative electrode of the second diode D2 is power supply
The outfan of unit 110, the power supply interface that voltage pin Y2 is power supply interface unit 111 of power supply interface chip U1, power supply connects
The data-interface that data pin Y1 is power supply interface unit 111 of mouth chip U1；It should be noted that in the present embodiment, supply
Data pin Y1 of electrical interface chip U1 refers to pin 1 or the pin 2 of this power supply interface chip U1, or should be by electrical interface
The pin 3 of chip or pin 6, voltage pin Y2 of power supply interface chip U1 refer to this power supply interface chip U1 pin 4 or
Pin 5, should be by the pin Y3 ground connection of electrical interface chip U1, and this pin Y3 refers to the grounding pin 7 of power supply chip U1 or connects
Ground pin 8.
It should be noted that in the present embodiment, the number of the power supply interface chip U1 in the circuit shown in Fig. 3 is 1,
Certainly the number of this power supply interface chip U1 interface is not limited to 1, and it can be according to the network port number of Ethernet switch
It is set with the number by electrical interface chip RJ45, such as, when Ethernet switch is 8 mouthfuls of Ethernet switches, and by electricity
When the number of interface chip RJ45 is 7, then as it is shown on figure 3, the number of this power supply interface chip U1 is 1, work as Ethernet switch
It is 8 mouthfuls of Ethernet switches, and when being 6 by the number of electrical interface chip RJ45, then the number of this power supply interface chip U1 is 2
Deng, therefore, knowable to foregoing description, it is ether by the number of electrical interface chip RJ45 and the number sum of power supply interface chip U1
The port number of network switch；Additionally, should be identical with the number of the second diode D2 by the number of electrical interface chip U1.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, motherboard power supply module 12 includes the first electricity
Pressure converting unit 120 and the second voltage conversion unit 121.
Wherein, the input that input is motherboard power supply module 12 of the first voltage conversion unit 120, the first voltage conversion
The outfan of unit 120 and the input of the second voltage conversion unit 121 connect, the outfan of the second voltage conversion unit 121
Outfan for motherboard power supply module 12.
Concrete, the first voltage conversion unit 120 receives unidirectional current, and unidirectional current carries out output first after voltage conversion
Unidirectional current is to the second voltage conversion unit 121, and the second voltage conversion unit 121 exports after first unidirectional current carries out voltage conversion
Working direct current electricity；It should be noted that in the present embodiment, the first galvanic voltage is less than galvanic voltage value, excellent
Choosing, the first galvanic voltage value is 12V.
Further, as the present invention one preferred implementation, as it is shown on figure 3, this first voltage conversion unit 120 is by electricity
Pressure conversion chip Ax3161 realizes, and the voltage input end Vin of this voltage conversion chip Ax3161 is this first voltage conversion unit
The input of 120, the voltage output end Vout of the Ax3161 of this voltage conversion chip is the defeated of this first voltage conversion unit 120
Go out end, the earth terminal Gnd ground connection of this voltage conversion chip Ax3161；This second voltage conversion unit 121 is by voltage conversion chip
AP1534 realizes, the input that voltage input end Vin is this second voltage conversion unit 121 of this voltage conversion chip AP1534
End, the outfan that voltage output end Vout is this second voltage conversion unit 121 of this voltage conversion chip AP1534, this voltage
The earth terminal Gnd ground connection of conversion chip AP1534.
Further, as the present invention one preferred implementation, as in figure 2 it is shown, motherboard power supply module 12 also includes the 3rd
Voltage conversion unit 122 and the 4th voltage conversion unit 123.
Wherein, the input termination of the input of tertiary voltage converting unit 122 and the 4th voltage conversion unit 123 is all with the
The outfan of one voltage conversion unit 120 connects, the outfan of tertiary voltage converting unit 122 and the 4th voltage conversion unit
The outfan of 123 exports the second unidirectional current and the 3rd unidirectional current respectively.
Concrete, tertiary voltage converting unit 122 receives the first unidirectional current, and electric first unidirectional current is carried out voltage conversion
Rear output the second unidirectional current；4th voltage conversion unit 123 receives the first unidirectional current, and the first unidirectional current is carried out voltage conversion
Rear output the 3rd unidirectional current；It should be noted that in the present embodiment, the second unidirectional current and the voltage value of the 3rd DC voltage
It is below the first galvanic voltage value, it is preferred that the second galvanic voltage value is 2.5V, the 3rd galvanic voltage
Value is second unidirectional current of 1.8V, this 2.5V and the 3rd unidirectional current of 1.8V can be other works on the mainboard of Ethernet switch
Voltage needed for module offer work is provided.
Further, as the present invention one preferred implementation, as it is shown on figure 3, this tertiary voltage converting unit 122 and
Four voltage conversion voltages 123 are realized by voltage conversion chip AP1534, the voltage input end of this voltage conversion chip AP1534
Vin is the input of this tertiary voltage converting unit 122 and the 4th voltage conversion unit 123, this voltage conversion chip
The voltage output end Vout of AP1534 is the outfan of this tertiary voltage converting unit 122 and the 4th voltage conversion unit 123,
The earth terminal Gnd ground connection of this voltage conversion chip AP1534.
Further, as the present invention one preferred implementation, as shown in Fig. 2 Yu Fig. 4, included many by electro-detection module 13
Individual by electro-detection unit 130.
Wherein, multiple the first voltage input end compositions by electro-detection unit 130 are inputted by the first of electro-detection module 13
End, multiple outfans by electro-detection unit 130 form the outfan by electro-detection module 13, multiple by electro-detection unit 130
The second voltage input end composition by the second input of electro-detection module 13, this second input all receives working direct current electricity,
Each the first voltage input end by electro-detection unit 130 and each being connected by electrical interface one_to_one corresponding by electric interface unit 100
Connect；It should be noted that in the present embodiment, the number by electro-detection unit 130 and the number phase by electric interface unit 100
With.
Concrete, each worked according to working direct current electricity by electro-detection unit 130, and believe according to unidirectional current output detections
Number.
Further, as the present invention one preferred implementation, included as it is shown on figure 3, each by electro-detection unit 130
One resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and photoelectrical coupler U2.
Wherein, first end of the first resistance R1 and first end of the second resistance R2 connect formation altogether by electro-detection unit 130
First voltage input end, second end of the first resistance R1 and second end of the second resistance R2 are all defeated with the first of photoelectrical coupler U2
Entering end to connect, second input of photoelectrical coupler U2 and first end of the 3rd resistance R3 connect, second end of the 3rd resistance R3
For the second voltage input end by electro-detection unit 130, the outfan of photoelectrical coupler U2 is the output by electro-detection unit 130
End, the outfan of photoelectrical coupler U2 and first end of the 4th resistance R4 connect, the second end ground connection of the 4th resistance R4.
It should be noted that in the present embodiment, first the first voltage input end and first by electro-detection unit 130
The individual outfan PWR0 by electric interface unit 100 connects, second the first voltage input end and second by electro-detection unit 130
The individual outfan PWR1 by electric interface unit 100 connects, the 3rd the first voltage input end and the 3rd by electro-detection unit 130
The individual outfan PWR2 by electric interface unit 100 connects, the 4th the first voltage input end and the 4th by electro-detection unit 130
The individual outfan PWR3 by electric interface unit 100 connects, the 5th the first voltage input end and the 5th by electro-detection unit 130
The individual outfan PWR4 by electric interface unit 100 connects, the 6th the first voltage input end and the 6th by electro-detection unit 130
The individual outfan PWR5 by electric interface unit 100 connects, the 7th the first voltage input end and the 7th by electro-detection unit 130
The individual outfan PWR7 by electric interface unit 100 connects.
Further, as the present invention one preferred implementation, as it is shown on figure 3, control module 14 is TF-331 by model
Central processing unit (Central Processing Unit, CPU) realize, this CPU includes multiple signal receiving end, Jie
Matter stand-alone interface (Medium Independent Interface, MII) and voltage input end VCC, the plurality of signal receives
End forms the signal input part of this control module 14, and this MII is the signal output part of control module 14；It should be noted that
In the present embodiment, the CPUTF-331 in Fig. 3 illustrate only seven signal receiving ends of GPIO0-GPIO6, and this CPU TF-331 institute
The number of signal receiving end identical with the number by electrical interface chip RJ45, and with the number phase by electro-detection unit 130
With.
Further, as the present invention one preferred implementation, as it is shown on figure 3, exchanger chip 15 by model is
The exchanger chip of RTL9309SB realizes, this exchanger chip RTL9309SB include a MII, voltage input end VCC and
Eight network ports of P0-P7, this MII is the input of exchanger chip 15, the P0-P6 seven in eight network ports of this P0-P7
The individual network port is connected by the data pin Y1 one_to_one corresponding of electrical interface chip RJ45 with by seven in electric interface unit 100 respectively
Connecing, this P7 network port is connected with data pin Y1 of power supply interface chip U1.
Concrete, network port P0 and first are connected by data pin Y1 of electrical interface chip RJ45, network port P1
Being connected by data pin Y1 of electrical interface chip RJ45 with second, network port P2 and the 3rd are by electrical interface chip RJ45's
Data pin Y1 connects, and network port P3 and the 4th are connected by data pin Y1 of electrical interface chip RJ45, network port P4
Being connected by data pin Y1 of electrical interface chip RJ45 with the 5th, network port P5 and the 6th are by electrical interface chip RJ45's
Data pin Y1 connects, and network port P6 and the 7th are connected by data pin Y1 of electrical interface chip RJ45.
It should be noted that in the present embodiment, Fig. 4 illustrate only 1 exchanger chip RTL9309SB, i.e. includes Fig. 4
Shown in the Ethernet switch of circuit be 8 mouthfuls of Ethernet switches, and when Ethernet switch is 16 mouthfuls or when 32, it is only necessary to
Cascaded switches chip RTL9309SB on the basis of this Ethernet switch is by electricity power supply circuits, and change accordingly is by electricity
The number of detector unit 130, just may be used by the number of electrical interface chip RJ45 and the first diode D1, it is notable that
During the change number by electro-detection unit 130, the number by electrical interface chip RJ45 and the first diode D1, need to follow by electricity
The number of detector unit 130, by electrical interface chip RJ45 and the same number of principle of the first diode D1.
With the circuit structure shown in Fig. 3 with Fig. 4, embodiment of the present invention offer is subject to the work of electricity power supply circuits former below
Reason illustrates, and details are as follows:
Firstly, it is necessary to explanation, each in Fig. 3 all can be received externally fed equipment 20 by electrical interface chip RJ45 and carry
The 48V unidirectional current of confession and data signal.When exchanger chip RTL9309SB network port P0 connect first by electrical interface
When chip RJ45 receives 48V unidirectional current and the data signal that externally fed equipment 20 provides, the be connected with network port P0
One by electrical interface chip RJ45 through connected first diode D1 by this 48V unidirectional current send to send to second
Diode D2 and voltage conversion chip Ax3161, the second diode D2 by this 48V unidirectional current output to power supply interface chip U1, with
This power supply interface chip U1 is made to power, to realize the right of Ethernet switch to outside power receiving equipment 30 according to this 48V unidirectional current
Outer power supply.
Voltage conversion chip Ax3161 exports after this 48V unidirectional current is converted to first unidirectional current of 12V to voltage conversion
Chip AP1534, first unidirectional current of 12V is converted to the working direct current electricity of 3.3V by voltage conversion chip AP1534, with according to being somebody's turn to do
The working direct current electricity of 3.3V provides work electricity to multiple photoelectrical coupler U2, CPUTF-331 and exchanger chip RTL9309SB
Pressure；Furthermore, voltage conversion chip Ax3161 exports after this 48V unidirectional current is converted to first unidirectional current of 12V to another two electricity
Pressure conversion chip AP1534, the first unidirectional current conversion of 12V is respectively converted into by two other voltage conversion chip AP1534
Second unidirectional current of 2.5V and the 3rd unidirectional current of 1.8V, second unidirectional current of this 2.5V and the 3rd unidirectional current of 1.8V can be with
Too voltage needed for other operational module offer work on the mainboard of network switch.
Meanwhile, this 48V unidirectional current is sent extremely and it by first be connected with network port P0 by electrical interface chip RJ45
First connected is triggered according to this 48V unidirectional current by the photoelectrical coupler U2 in electro-detection unit 130, this photoelectrical coupler U2
Its internal photocell is luminous, and then the switching tube within photoelectrical coupler U2 is turned on, thus output detections signal is extremely
After the signal receiving end GPIO0 of the signal receiving end GPIO0, CPUTF-331 of CPUTF-331 detects this detection signal, to this
Detection signal carries out processing to export corresponding control signal, and exports this by MII and control signal to exchanger chip
The MII of RTL9309SB, exchanger chip RTL9309SB can recognize that this control signal of CPUTF-331, and according to this control signal
Control its network port P0 open-minded, control other network ports P1-P6 simultaneously and persistently turn off, and then make network port P0 permissible
The connected data signal received by electrical interface chip RJ45 is sent to outside power receiving equipment 30；It should be noted that
In the present embodiment, the original state of the network port P0-P7 in exchanger chip RTL9309SB is shutoff, only when with
During the unidirectional current provided by electrical interface chip RJ45 reception externally fed equipment that the network port connects, corresponding network-side eloquence
Can be opened, and then carry out communication, otherwise, this network port persistently turns off.It should be noted that and exchanger chip
The work process by electrical interface chip RJ45 that other network ports of RTL9309SB connect and above-mentioned and switch
The work process by electrical interface chip RJ45 that the network port P0 of RTL9309SB connects is identical, and here is omitted；Additionally,
Ethernet switch shown in the present embodiment by electricity power supply circuits be not limited to every time can only one by electrical interface chip RJ45
The data signal that the 48V working direct current electricity that receiving user provides provides with external circuit, i.e. Ethernet shown in the present embodiment is handed over
Change planes by electricity power supply circuits the most at least include one by electrical interface chip RJ45 receive user provide 48V working direct current electricity with
The data signal that external circuit provides, and it is processed accordingly.
In the present embodiment, the present embodiment provide by electricity power supply circuits use the first diode D1 substituted for existing with
Too multiple by electrical chip in network switch, and use the second diode D2 to instead of the power supply in existing Ethernet switch
Chip so that the Ethernet switch that the present embodiment provides is handed over compared to existing Ethernet by the circuit structure of electricity power supply circuits
Change planes simple by electricity power supply circuit construction, and low cost, thus solve existing ethernet switch circuitry structure complexity, become
This high problem.
Additionally, the present embodiment provide by electricity power supply circuits by use photoelectrical coupler U2 by electro-detection module 13,
Make photoelectrical coupler U2 according to the 48 unidirectional current output corresponding detection signals exported by electrical interface chip RJ45 to CPU, enter
And CPU is exported after being changed by this detection signal and is switched on or off controlling signal to exchanger chip RTL9309SB accordingly,
Exchanger chip RTL9309SB is turned on and off according to being switched on or off the control signal corresponding network port of control, to carry out
The control of communication, it is achieved that port controllable, the non-powered network port solving the existence of existing Ethernet switch is uncontrollable
Problem.
Further, the embodiment of the present invention also provides for a kind of Ethernet switch, and this Ethernet switch includes above-mentioned
By electricity power supply circuits.
In the present invention, by employing include by electricity module 10, supply module 11, motherboard power supply module 12, by electro-detection
Module 113, control module 14 and exchanger chip 15 by electricity power supply circuits so that by electricity module 10 by unidirectional current send extremely
Supply module 11, motherboard power supply module 12 and by electro-detection module 13, and send data to exchanger chip 15；Power supply mould
Block 11 is powered to outside power receiving equipment 30 according to unidirectional current；It is backward by electricity that motherboard power supply module 12 carries out voltage conversion to unidirectional current
Detection module 13, control module 14 and exchanger chip 15 are powered；Believed according to unidirectional current output detections by electro-detection module 13
Number to control module 14；Control module 14 outputs control signals to exchanger chip 15 after processing detection signal, exchange
Movement sheet 15 identifies control signal, and controls the break-make of the network port according to control signal, with by data through supply module 11
Send to outside power receiving equipment 30, owing to this circuit is by being carried out by electricity situation Ethernet switch by electro-detection module 13
Detection, and then make the network port of exchanger chip 15 controlled, and this circuit without use multiple power supply chip with by electricity
Chip, simple in construction, and low cost, solve existing POE switch and there is circuit structure complexity, fault rate height, cost height
And the non-powered uncontrollable problem of the network port.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. Ethernet switch by electricity power supply circuits, described by electricity power supply circuits and externally fed equipment and outside by electricity
Equipment connect, it is characterised in that described by electricity power supply circuits include:
By electricity module, supply module, motherboard power supply module, by electro-detection module, control module and exchanger chip；
Described it is connected with the network port of described exchanger chip by the electricity FPDP of module, the described outfan by electric module
With the input of described supply module, the input of described motherboard power supply module and described the first input by electro-detection module
End connects；The FPDP of described supply module is connected with the network port of described exchanger chip；Described motherboard power supply module
Outfan output services unidirectional current, the outfan of described motherboard power supply module with described by electro-detection module second input
The voltage input end of end, the voltage input end of described control module and described exchanger chip connects；Described by electro-detection mould
The outfan of block is connected with the signal input part of described control module；The signal output part of described control module and described switch
The signal input part of chip connects；
The described unidirectional current provided by the electricity module described externally fed equipment of reception and data, and described unidirectional current is sent to institute
State supply module, described motherboard power supply module and described by electro-detection module；Described supply module according to described unidirectional current to
Described outside power receiving equipment is powered；Described motherboard power supply module carries out voltage conversion to described unidirectional current, and according to conversion after
Working direct current electricity is powered by electro-detection module, described control module and described exchanger chip to described；Described by electro-detection
Module is according to described unidirectional current output detections signal to described control module；Described control module to described detection signal at
Control signal is exported after reason, control signal described in described exchanger chip identification, and control network-side according to described control signal
The break-make of mouth, to send the described data received by electricity module to the most described outside power receiving equipment through described supply module.
2. according to described in right 1 by electricity power supply circuits, it is characterised in that described by electricity module include by electric interface unit be subject to
Electric unit；
The described data-interface by electric interface unit is the described FPDP by electricity module, described is subject to electricity by electric interface unit
Interface is connected with the described input by electric unit, the described outfan by electric unit and described being connect by electricity by electric interface unit
By the outfan of electricity module described in interruption-forming；
Described received the described externally fed equipment unidirectional current that provide by described by electric interface unit by electric unit, and by described
Unidirectional current sends to described supply module and described motherboard power supply module, described is exported extremely by described unidirectional current by electric interface unit
Described by electro-detection module, described by electric interface unit, described data are sent to described exchanger chip.
The most according to claim 2 by electricity power supply circuits, it is characterised in that described by electric interface unit include multiple by electricity
Interface chip, described is included multiple first diode by electric unit；
Multiple described data pin by electrical interface chip form the described data-interface by electric interface unit, multiple described by electricity
The voltage pin composition of interface chip described by electric interface unit by electrical interface, the anode composition of multiple described first diodes
The described input by electric unit, the described outfan by electric unit of negative electrode composition of multiple described second diodes, Mei Gesuo
State and connected one to one with the anode of each described first diode by the voltage pin of electrical interface chip.
The most according to claim 1 by electricity power supply circuits, it is characterised in that described supply module includes power supply unit and confession
Electric interface unit；
The input of said supply unit is the input of described supply module, the outfan of said supply unit and described power supply
The power supply interface of interface unit connects, the FPDP that data-interface is described supply module of described power supply interface unit；
Said supply unit receives described unidirectional current, and is that described outside power receiving equipment is powered by described power supply interface unit.
The most according to claim 4 by electricity power supply circuits, it is characterised in that said supply unit include at least one second
Diode, described power supply interface unit includes at least one power supply interface chip；
The input that anode is said supply unit of described second diode, the negative electrode of described second diode is described power supply
The outfan of unit, the voltage pin of described power supply interface chip is the power supply interface of described power supply interface unit, described power supply
The data pin of interface chip is the data-interface of described power supply interface unit.
The most according to claim 1 by electricity power supply circuits, it is characterised in that described motherboard power supply module includes the first voltage
Converting unit and the second voltage conversion unit；
The input of described first voltage conversion unit is the input of described motherboard power supply module, and described first voltage conversion is single
The outfan of unit is connected with the input of described second voltage conversion unit, and the outfan of described second voltage conversion unit is institute
State the outfan of motherboard power supply module；
Described first voltage conversion unit receives described unidirectional current, and it is straight that described unidirectional current carries out export first after voltage conversion
Stream electricity is to described second voltage conversion unit, after described second voltage conversion unit carries out voltage conversion to described first unidirectional current
Export described working direct current electricity.
The most according to claim 6 by electricity power supply circuits, it is characterised in that described motherboard power supply module also includes the 3rd electricity
Pressure converting unit and the 4th voltage conversion unit；
The input of described tertiary voltage converting unit terminates all with described first with the input of described 4th voltage conversion unit
The outfan of voltage conversion unit connects, the outfan of described tertiary voltage converting unit and described 4th voltage conversion unit
Outfan exports the second unidirectional current and the 3rd unidirectional current respectively；
Described tertiary voltage converting unit receives described first unidirectional current, and described first unidirectional current carries out institute after voltage conversion
The second unidirectional current is exported after stating；Described 4th voltage conversion unit receives described first unidirectional current, and to described first unidirectional current
The 3rd unidirectional current is exported after carrying out voltage conversion.
The most according to claim 3 by electricity power supply circuits, it is characterised in that described by electro-detection module include multiple by electricity
Detector unit；
Multiple described the first described first input ends by electro-detection module of voltage input end composition by electro-detection unit, multiple
The described outfan by electro-detection unit forms the described outfan by electro-detection module, multiple described by the of electro-detection unit
Two described the second inputs by electro-detection module of voltage input end composition, each described defeated by the first voltage of electro-detection unit
Enter end to be connected one to one by the voltage pin of electrical interface chip described in each；
Worked according to described working direct current electricity by electro-detection unit described in each, and according to described unidirectional current output detections signal.
The most according to claim 8 by electricity power supply circuits, it is characterised in that described in each, to be included first by electro-detection unit
Resistance, the second resistance, the 3rd resistance, the 4th resistance and photoelectrical coupler；
It is described by the first of electro-detection unit that first end of described first resistance and the first end of described second resistance connect formation altogether
Voltage input end, the second end of the second end of described first resistance and described second resistance all with the first of described photoelectrical coupler
Input connects, and the second input of described photoelectrical coupler is connected with the first end of described 3rd resistance, described 3rd resistance
The second end be described the second voltage input end by electro-detection unit, the outfan of described photoelectrical coupler is described by electric-examination
Surveying the outfan of unit, the outfan of described photoelectrical coupler is connected with the first end of described 4th resistance, described 4th resistance
The second end ground connection.
10. an Ethernet switch, it is characterised in that described Ethernet switch includes such as any one of claim 1 to 9 institute
That states is subject to electricity power supply circuits.
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| CN201610685638.2A CN106101028B (en) | 2016-08-18 | 2016-08-18 | Ethernet switch and power receiving and supplying circuit thereof |
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| CN201610685638.2A CN106101028B (en) | 2016-08-18 | 2016-08-18 | Ethernet switch and power receiving and supplying circuit thereof |
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