CN106330468B - A kind of Power over Ethernet device and Power over Ethernet method - Google Patents
A kind of Power over Ethernet device and Power over Ethernet method Download PDFInfo
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- CN106330468B CN106330468B CN201610707397.7A CN201610707397A CN106330468B CN 106330468 B CN106330468 B CN 106330468B CN 201610707397 A CN201610707397 A CN 201610707397A CN 106330468 B CN106330468 B CN 106330468B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The invention discloses a kind of Power over Ethernet device and Power over Ethernet methods, it include: POE chip, POE chip includes M pin, M pin of POE chip connects one to one with M pin being isolated on voltage changing module, an isolation capacitance of connecting between POE chip and each pair of pin that voltage changing module connection is isolated；Isolation voltage changing module is also used to access PHY chip；Network interface, including M pin, M pin of network interface connect one to one with M pin being isolated on voltage changing module, the isolation capacitance of connecting between network interface and each pair of pin that voltage changing module connection is isolated；M pin of network interface also connects one to one with M pin on POE chip；Wherein, the PD equipment power supply that POE chip is used to access to network interface.Above-mentioned apparatus provided by the invention solves power supply unit in the prior art there are output powers smaller, the technical issues of being unsatisfactory for high-power power demands.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of Power over Ethernet device and Power over Ethernet method.
Background technique
Twisted pair (twisted pair, TP) is that most common transmission medium (is commonly called as net in a kind of generic cabling engineering
Line), the inside one shares 4 pairs of 8 lines.Currently the most commonly used is 1,2,3,6 lines pair of signal wire, transmit for common data；Remaining
4,5,7,8 lines pair, be for future consider reserved route.
Power over Ethernet (Pow on Ethernet, POE) standard current at present mainly has IEEE 802.3af (POE)
With IEEE 802.3at (POE+), difference of them is that port provides the output power of 15.4W and 30W respectively.POE points are PSE
With two components of PD, power supply unit (Power Sourcing Equipment, PSE) and power receiving equipment (Powered Device,
PD).PSE is normally on switch device, and PD is then located on terminal device.The technology uses in an ethernet cable 2
Line is powered, it may be assumed that using 1,2,3,6 lines to being superimposed upon on data transfer signal, current 2 pairs of lines are up to for power
30W。
As the function of wireless, IP phone, the rise of monitoring camera etc. this kind of product, terminal device is constantly rich
Richness, the promotion of power consumption slowly, some models terminal have been over the maximum power 30W that POE+ can be provided, so that
This Terminal Type can only change the powering mode of passback system.
High power Power over Ethernet (High Power Over Ethernet, HPOE), that is, be currently to formulate
In standard IEEE 802.3bt, be powered by 4 pairs of 8 lines, in existing HPOE power supply plan, be isolation become
The centre cap making alive of die block, all uses of the centre cap of four pairs of lines can realize high-power POE scheme, at present by
In POE chip limitation, every route is to the power that can only export 45W-50W, then existing HPOE power supply plan may be implemented
Peak power there was only 90W-100W.So that there are output powers is smaller for power supply unit in the prior art, it is unsatisfactory for high-power
The technical issues of power demands.
Summary of the invention
The embodiment of the present invention provides a kind of Power over Ethernet device and Power over Ethernet method, for solving in the prior art
Power supply unit that there are output powers is smaller, the technical issues of being unsatisfactory for high-power power demands.
First aspect of the embodiment of the present invention provides a kind of Power over Ethernet device, comprising:
PHY chip POE chip, the POE chip include M pin, M pin of the POE chip with transformation is isolated
M pin in module connects one to one, and connects between the POE chip and each pair of pin that voltage changing module connection is isolated
One isolation capacitance；Wherein, M is the positive integer greater than 0；The isolation voltage changing module is also used to access PHY chip；
Network interface, the network interface include M pin, and transformation is isolated with described in M pin of the network interface
M pin in module connects one to one, and goes here and there between the network interface and each pair of pin that voltage changing module connection is isolated
Join the isolation capacitance；M pin of the network interface also connects one to one with M pin on the POE chip；
Wherein, the PD equipment power supply that the POE chip is used to access to the network interface.
Optionally, the Power over Ethernet device further include:
Processor is connect with the POE chip, for determining the type of the PD equipment, the class based on the PD equipment
Type controls the POE chip and powers to the PD equipment.
Optionally, the processor determines the class of the PD equipment by parsing the LLDP signal of the PD equipment feedback
Type.
Optionally, the PD equipment is connect by cable with the network interface, and the PHY chip is also used to: detection institute
The type for stating cable, by the type transfers of the cable to the processor.
Optionally, the processor is also used to: being determined the type of the cable, based on the type of the cable, is controlled institute
State the polarity of M pin of POE chip；Wherein, when the type for determining the cable is direct-connected line style, the POE core is controlled
The holding initial polarity of M pin of piece；When the type for determining the cable is to intersect line style, the M of the POE chip is controlled
The initial polarity of a pin is exchanged.
Optionally, the PHY chip further includes status register, for storing the status information of the cable, the place
Reason device determines the type of the cable by reading the status information.
Second aspect of the embodiment of the present invention provide Power over Ethernet method, applied to the present embodiment first aspect provide with
Too net power supply unit, which comprises
Determine the type of the PD equipment；
Based on the type of the PD equipment, controls the POE chip and power to the PD equipment.Optionally, the determination
The type of the PD equipment, specifically includes: the LLDP signal by parsing the PD equipment feedback determines the class of the PD equipment
Type.
Optionally, the control POE chip powers to the PD equipment, specifically includes:
Determine that the type for the cable connecting with the PD equipment controls the POE chip based on the type of the cable
The polarity of M pin, so that the POE chip powers to the PD equipment by M pin of the POE chip.
Optionally, the type based on the cable controls the polarity of M pin of the POE chip, specific to wrap
It includes:
When the type for determining the cable is direct-connected line style, the initial pole of holding of M pin of the POE chip is controlled
Property；
When the type for determining the cable is to intersect line style, the initial polarity pair of M pin of the POE chip is controlled
It changes.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
1, since in technical solution in the embodiment of the present application, the Power over Ethernet device of design includes: POE chip,
The POE chip includes M pin, and M pin of the POE chip is corresponded with M pin being isolated on voltage changing module
Connection, an isolation capacitance of connecting between the POE chip and each pair of pin that voltage changing module connection is isolated；Wherein, M be greater than
0 positive integer；The isolation voltage changing module is also used to access PHY chip；Network interface, the network interface include M pin,
M pin of the network interface connects one to one with the M pin being isolated on voltage changing module, the network interface with
It connects the isolation capacitance between each pair of pin of the isolation voltage changing module connection；M pin of the network interface also with institute
The M pin stated on POE chip connects one to one；Wherein, the POE chip to the PD that the network interface accesses for setting
The technological means of available electricity.In this way, the line in each pair of differential lines MDI in network interface end adds power supply cathode PSE-, line to MDI4+/-
To MDI3+ ,/- adds power supply cathode PSE+, and line adds the anode PSE+ that powers to MDI1+/- to MDI2+/- plus power supply cathode PSE-, line,
Respectively add an isolation capacitance on eight MDI line J1-J8 simultaneously, due to the logical exchange resistance direct current of isolation capacitance, can be used to be isolated
The positive and negative anodes of PSE, differential data signals are unaffected；Direct current is transmitted while transmitting data, transmission of electricity uses and Ethernet
The different frequency of data-signal, does not influence the transmission of data service, and in order to realize stopping direct current, PSE+/- must be connected to added isolation
After capacitor.According to the every road output power 45W-50W of current industry PSE chip, then can be realized using four pairs of lines simultaneously
The super high power of the port 4*45W=180W of one network interface is powered, and comparison industry HPOE power supply circuit realizes power and turns over
Times.Thus it is possible to effectively solve power supply unit in the prior art there are output powers smaller, it is unsatisfactory for high-power power demands
Technical problem.It realizes directly using line to method of supplying power to, super large output power is provided, meet the technology effect of high-power power demands
Fruit.
2, due to using the Power over Ethernet device in technical solution in the embodiment of the present application further include: place
Device is managed, is connect with the POE chip, for determining the type of the PD equipment, based on the type of the PD equipment, described in control
The technological means that POE chip powers to the PD equipment.In this way, when network interface accesses PD equipment, it can be according to PD equipment
Type come to PD equipment power, it is ensured that the reasonability of power supply, thus it is possible to effectively solve power supply mode exists in the prior art
Poor compatibility technical problem.Realize according to different type PD equipment provide different output power, it is compatible it is different types of by
Electric equipment improves the technical effect of the compatibility of power supply mode.
3, due to being also used to using the processor in technical solution in the embodiment of the present application: determining the net
The type of line controls the polar technological means of M pin of the POE chip based on the type of the cable.In this way,
When network interface accesses PD equipment by cable, since the type of cable is different, the line sequence that both ends may use is different, the application
Power over Ethernet device in embodiment can adjust the polarity of power supply according to the type of cable, it is ensured that the reasonability of power supply.
Thus it is possible to effectively solve the poor compatibility technical problem for depositing power supply mode in the prior art, compatible different types of net is realized
Line improves the technical effect of the compatibility of power supply mode.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application or in prior art, below retouches embodiment
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention one
A little embodiments.
Fig. 1 is the structure chart of Power over Ethernet device in the embodiment of the present application one；
Fig. 2 is the schematic diagram of each device connection relationship in Power over Ethernet device in the embodiment of the present application one；
Fig. 3 is each device signal transmission mode schematic diagram in Power over Ethernet device in the embodiment of the present application one；
Fig. 4 is the flow chart of Power over Ethernet method in the embodiment of the present application two.
Specific embodiment
The embodiment of the present invention provides a kind of Power over Ethernet device, there is confession for solving power supply unit in the prior art
The technical issues of electrical power is smaller, is unsatisfactory for high-power power demands.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of Power over Ethernet device, and general thought is as follows:
The Power over Ethernet device, comprising:
POE chip, the POE chip include M pin, M pin of the POE chip be isolated on voltage changing module
M pin connects one to one, one isolation electricity of series connection between the POE chip and each pair of pin that voltage changing module connection is isolated
Hold；Wherein, M is the positive integer greater than 0；The isolation voltage changing module is also used to access PHY chip；
Network interface, the network interface include M pin, and transformation is isolated with described in M pin of the network interface
M pin in module connects one to one, and goes here and there between the network interface and each pair of pin that voltage changing module connection is isolated
Join the isolation capacitance；M pin of the network interface also connects one to one with M pin on the POE chip；
Wherein, the PD equipment power supply that the POE chip is used to access to the network interface.
In this way, the line in each pair of differential lines MDI in the network interface end of Power over Ethernet device adds power supply cathode to MDI4+/-
PSE-, line add power supply cathode PSE+ to MDI3+/-, and for line to MDI2+/- plus power supply cathode PSE-, line is to MDI1+/- plus powers just
Pole PSE+, while respectively adding an isolation capacitance on eight MDI line J1-J8, due to the logical exchange resistance direct current of isolation capacitance, Ke Yiyong
The positive and negative anodes of PSE are isolated, differential data signals are unaffected；Transmit direct current while transmitting data, transmission of electricity using with
The different frequency of Ethernet data signal, does not influence the transmission of data service, and in order to realize stopping direct current, PSE+/- must be connected to institute
After adding isolation capacitance.According to the every road output power 45W-50W of current industry PSE chip, then simultaneously can using four pairs of lines
To realize the super high power power supply of the port 4*45W=180W of a network interface, comparison industry HPOE power supply circuit is realized
Power is double.Thus it is possible to effectively solve power supply unit in the prior art there are output powers smaller, it is unsatisfactory for high-power power supply
The technical issues of demand.It realizes directly using line to method of supplying power to, super large output power is provided, high-power power demands are met
Technical effect.
With reference to the accompanying drawing to main realization principle, specific embodiment and its correspondence of the embodiment of the present application technical solution
The beneficial effect that can reach is explained in detail.
Embodiment one
It is as shown in Figure 1 the specific block diagram of Power over Ethernet device in the embodiment of the present invention one, Fig. 2 is that the present invention is real
Apply the connection relationship diagram of each device in Power over Ethernet device in example.The Power over Ethernet device includes:
POE chip 10, the POE chip 10 include M pin, M pin of the POE chip 10 with transformation mould is isolated
M pin on block 20 connects one to one, between the POE chip 10 and each pair of pin that the connection of voltage changing module 20 is isolated
It connects an isolation capacitance；Wherein, M is the positive integer greater than 0；The isolation voltage changing module 20 is also used to access PHY chip 30；
Network interface 40, the network interface include M pin, and M pin of the network interface 40 is isolated with described
M pin on voltage changing module 20 connects one to one, and the every of the connection of voltage changing module 20 is isolated with described in the network interface 40
Between the isolation capacitance of connecting pin；M pin of the network interface 40 also with M pin on the POE chip 10
It connects one to one；
Wherein, the PD equipment power supply that the POE chip 10 is used to access to the network interface 40, the network interface 40
For RJ45 network interface.
Specifically, in this city embodiment, the J8-J1 pin of isolation voltage changing module 20 pass through respectively a capacitor C1, C2,
C3, C4, C5, C6, C7, C8 are connected to MX4-, MX4+, MX3-, MX3+, MX2-, MX2+, MX1-, MX1 of RJ45 network interface 40
+ pin is transmitted for data between voltage changing module 20 and RJ45 network interface 40 to be isolated.It is connected to respectively after eight capacitors
On PSE-4, PSE-3, PSE+4, PSE+3, PSE-2, PSE-1, PSE+2, PSE+1 pin of POE chip 10, it to be used for POE chip
10 to 40 line of RJ45 network interface to power supply, RJ45 network interface 40 is for accessing PD equipment.
When there is PD equipment to be connected to RJ45 network interface 40 by cable, CPU can control POE chip 10PSE-1 and PSE+1 confession
Electric 15.4W, voltage signal arrives PD equipment to offer by MX1- the and MX1+ line of RJ45 network interface 40, first for PD device systems
It behaves；PD equipment sends LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) signal and passes through
Network cable transmission passes through MDI data line MX1-, MX1 to the PSE device in POE chip 10, by the RJ45 network interface 40 of PSE device
+, MX2-, MX2+, MX3-, MX3+, MX4-, MX4+ and isolation voltage changing module 20 send PHY chip 30 to, PHY chip 30 is passed through
MAC chip is transmitted to processor CPU, and processor CPU parses LLDP signal, then manages POE chip 10 and configure corresponding PSE-4, PSE
+ 4, PSE-3, PSE+3, PSE-2, PSE+2, PSE-1, PSE+1 line is to power supply, and voltage signal is by 40 line of RJ45 network interface to mentioning
It is supplied to PD equipment, completes power supply.
In this way, the line in each pair of differential lines MDI in the network interface end of Power over Ethernet device adds power supply cathode to MDI4+/-
PSE-, line add power supply cathode PSE+ to MDI3+/-, and for line to MDI2+/- plus power supply cathode PSE-, line is to MDI1+/- plus powers just
Pole PSE+, while respectively adding an isolation capacitance on eight MDI line J1-J8, due to the logical exchange resistance direct current of isolation capacitance, Ke Yiyong
The positive and negative anodes of PSE are isolated, differential data signals are unaffected；Transmit direct current while transmitting data, transmission of electricity using with
The different frequency of Ethernet data signal, does not influence the transmission of data service, and in order to realize stopping direct current, PSE+/- must be connected to institute
After adding isolation capacitance.According to the every road output power 45W-50W of current industry PSE chip, then simultaneously can using four pairs of lines
To realize the super high power power supply of the port 4*45W=180W of a network interface, comparison industry HPOE power supply circuit is realized
Power is double.Thus it is possible to effectively solve power supply unit in the prior art there are output powers smaller, it is unsatisfactory for high-power power supply
The technical issues of demand.It realizes directly using line to method of supplying power to, super large output power is provided, high-power power demands are met
Technical effect.
Specifically, in the present embodiment, the Power over Ethernet device further include: processor connects with the POE chip
It connects, for determining the type of the PD equipment, based on the type of the PD equipment, controls the POE chip 10 and the PD is set
Available electricity；
Wherein, the processor determines the type of the PD equipment by parsing the LLDP signal of the PD equipment feedback.
Specifically, power over Ethernet device in the present embodiment can also realize POE, HPOE, ultra high power three
Switching between power supply mode, it is backward compatible in order to realize since the PD equipment of POE and HPOE standard is all tap power supply, just
The compatibility that line powers to direct power switching at tap must be solved, in conjunction with the variation on hardware, software can be handled by setting
Device CPU realizes that specific process flow is as shown in Figure 3 to manage the power supply of POE chip 10.PSE of the PD equipment into POE chip 10
Equipment sends the LLDP signal with supply standard information first, and LLDP signal passes through RJ45 network interface 40,30 and of PHY chip
MAC chip is packaged encapsulation and is transmitted to processor CPU, and processor CPU can parse in detail LLDP signal, then control management
POE chip 10 carries out corresponding powered operation.
Specifically, processor CPU can formulate suitable power supply policy control POE core according to the different types of PD equipment
Piece 10 is powered PD equipment.When it is to meet the equipment of POE standard that processor CPU, which is resolved to PD equipment, processor CPU meeting
Control POE chip 10 automatically switches into PSE-1, PSE+1 power supply, other roads do not power, and realizes 2 pairs 4 (1,2,3,6 lines to)
Power supply can also switch to PSE-3, PSE+3 power supply, realize 2 pairs 4 (4,5,7,8 lines to) power supplies, meet
IEEE802.3af (POE) standard and IEEE 802.3at (POE+) standard.It is to meet when processor CPU is resolved to PD equipment
When the equipment of HPOE standard, processor CPU control POE chip 10 automatically switches into PSE-1, PSE+1, PSE-3, PSE+3 power supply,
4 pairs of eight lines are realized to power, meet IEEE802.3bt standard.When the equipment that processor CPU parsing PD equipment is super high power
When, processor CPU control POE chip 10 automatically switch into PSE-4, PSE-3, PSE+4, PSE+3, PSE-2, PSE-1, PSE+2,
PSE+1 all powers, and realizes super high power power supply.
By processor CPU manage control POE chip 10 be achieved that line to power supply to tap power supply between switching, it is simultaneous
The normal power supply of POE, HPOE and super high power is held.In this way, when network interface accesses PD equipment, it can be according to PD equipment
Type is powered to PD equipment, it is ensured that the reasonability of power supply, thus it is possible to effectively solve that power supply mode exists in the prior art
Poor compatibility technical problem.It realizes and provides different output power according to different type PD equipment, it is compatible different types of by electricity
Equipment improves the technical effect of the compatibility of power supply mode.
Further, Power over Ethernet device in the present embodiment, the PD equipment pass through cable and the network interface
40 connections.
The PHY chip 30 is also used to: the type of the cable is detected, by the type transfers of the cable to described
Processor.
The processor is also used to: being determined the type of the cable, based on the type of the cable, is controlled the POE core
The polarity of M pin of piece 10；When the type for determining the cable is direct-connected line style, M for controlling the POE chip 10 draw
The holding initial polarity of foot；When the type for determining the cable is to intersect line style, M pin of the POE chip 10 is controlled
Initial polarity exchange.
The PHY chip 30 further includes status register, and for storing the status information of the cable, the processor is logical
Cross the type for reading the status information to determine the cable.
Specifically, in the present embodiment, PD equipment can be accessed in network interface 40 by cable, and then Ethernet device can
To power to PD equipment.Since cable is divided into direct-connected line style and intersects line style, direct-connected line style is that the both ends of same root cable use
Same line sequence.Intersect the both ends that line style is same root cable and uses different line sequences.It is different types of in order to be compatible with both
Cable can determine the type of the cable of access PD equipment first by processor CPU, and then processor CPU powers to control
The polarity of pin.
Specific process flow is as shown in Figure 3: PHY chip 30 has the function of detection cable type, and PHY chip 30 is detection
Type be reported to processor CPU, processor CPU to do corresponding processing.Specifically detection cable type flow can be with for PHY chip 30
It is: is provided with status register in PHY chip 30, for storing the status information of cable, processor CPU is by reading the state
Information determines the type of cable.Wherein, status information can be 1 or 0, when status information is 1, show that the cable of connection is
Intersect line style, when status information is 0, shows that the cable of connection is direct-connected line style.Specifically, PHY chip 30 is in random interval
Time, which substitutes, sends FLP negotiation pulse on TD and RD, when the RD of PHY chip 30 has the association for receiving the equipment of the PD from opposite end
When quotient's pulse, that is, it can determine that status register corresponding state information to intersect line style, is set to 1 by the cable of connection.Work as PHY chip
Signal is not received on 30 RD, is just sent FLP on RD and is negotiated pulse, when TD receives the negotiation pulse from opposite end PD equipment
When, i.e., the cable is direct-connected line, and status register corresponding state information can be set to TD and RD automatic turning by PHY chip 30
0, processor CPU can judge the type of cable by the status information in read status register.
When processor CPU confirmly detects cable to intersect line style, the PSE-4 of processor CPU control POE chip 10,
PSE-3 and the exchange of PSE+4, PSE+3 polarity, PSE-2, PSE-1 and PSE+2, the exchange of PSE+1 polarity and PSE-4, PSE-3,
PSE-2, PSE-1 output cathode, PSE+4, PSE+3, PSE+2, PSE+1 output negative pole, so received power supply of PD equipment
Positive and negative anodes just can ensure that normally.When it is direct-connected line style that processor CPU, which confirmly detects cable, processor CPU controls POE chip
10 normal power supplies, it may be assumed that the polarity of the energization pins of POE chip 10 keeps initial polarity, polarity that it goes without doing exchange
In this way, when network interface accesses PD equipment by cable, since the type of cable is different, what both ends may use
Line sequence is different, and the Power over Ethernet device in the embodiment of the present application can adjust the polarity of power supply according to the type of cable, it is ensured that
The reasonability of power supply, thus it is possible to effectively solve the poor compatibility technical problem for depositing power supply mode in the prior art.It realizes simultaneous
Hold different types of cable, improves the technical effect of the compatibility of power supply mode.
Embodiment two
Referring to FIG. 4, being based on providing a kind of Power over Ethernet side with same inventive concept in embodiment one, embodiment two
Method, the Power over Ethernet device in applicating adn implementing one, which comprises
S401: the type of the PD equipment is determined；
S402: the type based on the PD equipment controls the POE chip and powers to the PD equipment.Optionally, described
The type for determining the PD equipment, specifically includes: the LLDP signal by parsing the PD equipment feedback determines the PD equipment
Type.
Optionally, the control POE chip powers to the PD equipment, specifically includes:
Determine that the type for the cable connecting with the PD equipment controls the POE chip based on the type of the cable
The polarity of M pin, so that the POE chip powers to the PD equipment by M pin of the POE chip.
Optionally, the type based on the cable controls the polarity of M pin of the POE chip, specific to wrap
It includes:
When the type for determining the cable is direct-connected line style, the initial pole of holding of M pin of the POE chip is controlled
Property；
When the type for determining the cable is to intersect line style, the initial polarity pair of M pin of the POE chip is controlled
It changes.
By one or more technical solutions in the embodiment of the present application, following one or more technology effects may be implemented
Fruit:
1, since in technical solution in the embodiment of the present application, the Power over Ethernet device of design includes: POE chip,
The POE chip includes M pin, and M pin of the POE chip is corresponded with M pin being isolated on voltage changing module
Connection, an isolation capacitance of connecting between the POE chip and each pair of pin that voltage changing module connection is isolated；Wherein, M be greater than
0 positive integer；The isolation voltage changing module is also used to access PHY chip；Network interface, the network interface include M pin,
M pin of the network interface connects one to one with the M pin being isolated on voltage changing module, the network interface with
It connects the isolation capacitance between each pair of pin of the isolation voltage changing module connection；M pin of the network interface also with institute
The M pin stated on POE chip connects one to one；Wherein, the POE chip to the PD that the network interface accesses for setting
The technological means of available electricity.In this way, the line in each pair of differential lines MDI in network interface end adds power supply cathode PSE-, line to MDI4+/-
To MDI3+ ,/- adds power supply cathode PSE+, and line adds the anode PSE+ that powers to MDI1+/- to MDI2+/- plus power supply cathode PSE-, line,
Respectively add an isolation capacitance on eight MDI line J1-J8 simultaneously, due to the logical exchange resistance direct current of isolation capacitance, can be used to be isolated
The positive and negative anodes of PSE, differential data signals are unaffected；Direct current is transmitted while transmitting data, transmission of electricity uses and Ethernet
The different frequency of data-signal, does not influence the transmission of data service, and in order to realize stopping direct current, PSE+/- must be connected to added isolation
After capacitor.According to the every road output power 45W-50W of current industry PSE chip, then can be realized using four pairs of lines simultaneously
The super high power of the port 4*45W=180W of one network interface is powered, and comparison industry HPOE power supply circuit realizes power and turns over
Times.Thus it is possible to effectively solve power supply unit in the prior art there are output powers smaller, it is unsatisfactory for high-power power demands
Technical problem.It realizes directly using line to method of supplying power to, super large output power is provided, meet the technology effect of high-power power demands
Fruit.
2, due to using the Power over Ethernet device in technical solution in the embodiment of the present application further include: place
Device is managed, is connect with the POE chip, for determining the type of the PD equipment, based on the type of the PD equipment, described in control
The technological means that POE chip powers to the PD equipment.In this way, when network interface accesses PD equipment, it can be according to PD equipment
Type come to PD equipment power, it is ensured that the reasonability of power supply, thus it is possible to effectively solve power supply mode exists in the prior art
Poor compatibility technical problem.Realize according to different type PD equipment provide different output power, it is compatible it is different types of by
Electric equipment improves the technical effect of the compatibility of power supply mode.
3, due to being also used to using the processor in technical solution in the embodiment of the present application: determining the net
The type of line controls the polar technological means of M pin of the POE chip based on the type of the cable.In this way,
When network interface accesses PD equipment by cable, since the type of cable is different, the line sequence that both ends may use is different, the application
Power over Ethernet device in embodiment can adjust the polarity of power supply according to the type of cable, it is ensured that the reasonability of power supply.
Thus it is possible to effectively solve the poor compatibility technical problem for depositing power supply mode in the prior art, compatible different types of net is realized
Line improves the technical effect of the compatibility of power supply mode.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Specifically, the corresponding computer program instructions of Power over Ethernet method in the embodiment of the present application can be stored
In CD, hard disk, on the storage mediums such as USB flash disk, when the computer program corresponding with Power over Ethernet method in storage medium refers to
Order is powered equipment and reads or be performed, and includes the following steps:
Determine the type of the PD equipment；
Based on the type of the PD equipment, controls the POE chip and power to the PD equipment.
Optionally, stored in the storage medium with step: determine the corresponding computer journey of the type of the PD equipment
Sequence instructs when executed, specifically comprises the following steps:
LLDP signal by parsing the PD equipment feedback determines the type of the PD equipment.
Optionally, stored in the storage medium with step: it is corresponding to the PD equipment power supply to control the POE chip
Computer program instructions when executed, specifically comprise the following steps:
Determine that the type for the cable connecting with the PD equipment controls the POE chip based on the type of the cable
The polarity of M pin, so that the POE chip powers to the PD equipment by M pin of the POE chip.
Optionally, store in the storage medium and step: the type based on the cable controls the POE chip
M pin the corresponding computer program instructions of polarity when executed, specifically comprise the following steps:
When the type for determining the cable is direct-connected line style, the initial pole of holding of M pin of the POE chip is controlled
Property；
When the type for determining the cable is to intersect line style, the initial polarity pair of M pin of the POE chip is controlled
It changes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of Power over Ethernet device characterized by comprising
POE chip, the POE chip include M pin, and M pin of the POE chip and the M being isolated on voltage changing module are a
Pin connects one to one, an isolation capacitance of connecting between the POE chip and each pair of pin that voltage changing module connection is isolated；
Wherein, M is the positive integer greater than 0；The isolation voltage changing module is also used to access PHY chip；
Network interface, the network interface include M pin, and voltage changing module is isolated with described in M pin of the network interface
On M pin connect one to one, connect institute between the network interface and each pair of pin that voltage changing module connection is isolated
State isolation capacitance；M pin of the network interface also connects one to one with M pin on the POE chip；
Wherein, the PD equipment power supply that the POE chip is used to access to the network interface.
2. Power over Ethernet device as described in claim 1, which is characterized in that the Power over Ethernet device further include:
Processor is connect with the POE chip, for determining the type of the PD equipment, based on the type of the PD equipment, control
The POE chip is made to power to the PD equipment.
3. Power over Ethernet device as claimed in claim 2, which is characterized in that the processor is by parsing the PD equipment
The LLDP signal of feedback determines the type of the PD equipment.
4. Power over Ethernet device as claimed in claim 2, which is characterized in that the PD equipment passes through cable and the network
Interface connection, the PHY chip is also used to: the type of the cable is detected, by the type transfers of the cable to described
Processor.
5. Power over Ethernet device as claimed in claim 4, which is characterized in that the processor is also used to: determining the net
The type of line controls the polarity of M pin of the POE chip based on the type of the cable；Wherein, the net is being determined
When the type of line is direct-connected line style, the holding initial polarity of M pin of the POE chip is controlled；Determining the cable
Type is that the initial polarity exchange of M pin of the POE chip is controlled when intersecting line style.
6. Power over Ethernet device as described in claim 4 or 5, which is characterized in that the PHY chip further includes Status register
Device, for storing the status information of the cable, the processor determines the cable by reading the status information
Type.
7. a kind of Power over Ethernet method, special applied to the Power over Ethernet device as described in any in claim 1-6
Sign is, comprising:
Determine the type of the PD equipment；
Based on the type of the PD equipment, controls the POE chip and power to the PD equipment.
8. Power over Ethernet method as claimed in claim 7, which is characterized in that the type of the determination PD equipment, tool
Body includes: the type that the PD equipment is determined by parsing the LLDP signal of the PD equipment feedback.
9. Power over Ethernet method as claimed in claim 8, which is characterized in that the control POE chip is to the PD
Equipment power supply, specifically includes:
The type for determining the cable connecting with the PD equipment controls M of the POE chip based on the type of the cable
The polarity of pin, so that the POE chip powers to the PD equipment by M pin of the POE chip.
10. Power over Ethernet method as claimed in claim 9, which is characterized in that the type based on the cable, control
The polarity of M pin of the POE chip, specifically includes:
When the type for determining the cable is direct-connected line style, the holding initial polarity of M pin of the POE chip is controlled；
When the type for determining the cable is to intersect line style, the initial polarity exchange of M pin of the POE chip is controlled.
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| CN201610707397.7A CN106330468B (en) | 2016-08-23 | 2016-08-23 | A kind of Power over Ethernet device and Power over Ethernet method |
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| CN201610707397.7A CN106330468B (en) | 2016-08-23 | 2016-08-23 | A kind of Power over Ethernet device and Power over Ethernet method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107294733B (en) * | 2017-07-14 | 2023-05-02 | 博为科技有限公司 | Power over Ethernet isolation device |
| CN109698755B (en) * | 2017-10-23 | 2021-12-14 | 华为技术有限公司 | Power supply control method, power supply device and power receiving device |
| CN108521334A (en) * | 2018-03-30 | 2018-09-11 | 深圳市云谷创新科技有限公司 | A kind of POE power supply systems |
| CN110266503A (en) * | 2019-06-29 | 2019-09-20 | 宁波瑞辉智能科技有限公司 | A kind of embedded industrial control terminal of double network interfaces for supporting POE to power |
| US11770155B2 (en) * | 2020-05-19 | 2023-09-26 | Genetec Inc. | Power distribution and data routing in a network of devices interconnected by hybrid data/power links |
| CN112202570B (en) * | 2020-09-04 | 2023-04-07 | 浙江大华技术股份有限公司 | Switch equipment and compatible power supply method |
| CN115396243B (en) * | 2022-10-27 | 2023-03-14 | 武汉思创易控科技有限公司 | PoE power supply control method, storage medium and terminal |
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