CN106972936A - A kind of system and method for adjustable POE supply voltages - Google Patents
A kind of system and method for adjustable POE supply voltages Download PDFInfo
- Publication number
- CN106972936A CN106972936A CN201710292687.4A CN201710292687A CN106972936A CN 106972936 A CN106972936 A CN 106972936A CN 201710292687 A CN201710292687 A CN 201710292687A CN 106972936 A CN106972936 A CN 106972936A
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- end equipment
- poe
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- resistance
- power
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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
Abstract
The invention discloses a kind of system and method for adjustable POE supply voltages, power that transformation efficiency is low to solve existing POE, power attenuation is big, the problem of wasting electric energy.The system includes：It is made up of power supply end equipment and receiving end equipment；The receiving end equipment includes：POE electric power detecting modules, for detect the receiving end equipment by electrical power signal and feed back to the power supply end equipment；Resistance is detected, for receiving the detecting current-carrying ripple of the power supply end equipment transmission and returning to level signal to the power supply end equipment according to the resistance of the detecting resistance；The power supply end equipment includes：Feeder ear power module, for adjusting supply voltage；Feeder ear switch controller, is connected with the feeder ear power module, and the level signal for sending detecting carrier wave and being returned according to the receiving end equipment calculates the voltage value after adjustment.Using the present invention, efficiently solve that POE voltages are too high to cause the problem of receiving end device power supply (DPS) transformation efficiency is low.
Description
Technical field
Powered field, more particularly to a kind of system and method for adjustable POE supply voltages the present invention relates to POE.
Background technology
POE is that a kind of utilization netting twine transmits data to rear end equipment and while the technology powered, makes receiving end equipment (referred to as
PD) need not be additionally provided power can just work, as shown in figure 1, power supply end equipment (abbreviation PSE) is originally used for 4 couple of transmission
The wherein two pairs voltage in the additional 48V in net mouth transformer rear end of line is realized and distal end PD is powered.
PSE structures are as shown in Fig. 2 a PSE power supply passes through multiple PSE switch controllers inside actual POE interchangers
Multiple network interfaces are transferred to, then are powered by network interface to distal end PD equipment.To prevent the loss of voltage on netting twine, POE defines output
Voltage is fixed as 48V.
The problem of this fixed voltage brings certain, when PD end equipments only need to 5V operating voltage, PD equipment needs
The 48V received is converted into 5V, could be used for PD systems.So the step being had to pass through in PD equipment is by POE voltages
The system of being converted into needs voltage, and the 48V that will be obtained switchs to 5V.Input voltage and output voltage pressure difference are bigger, the conversion of its electric energy
Efficiency is lower, and loss is bigger, and input voltage is high, and the voltage endurance requirement to electronic device will be high, can add electricity
The cost of sub- product.
Existing POE electric power-feeding structures schematic diagram is as shown in figure 3, the PSE power modules output 48V power supplys at PSE ends flow through PSE
Switch controller, PSE switch controllers can communicate with the POE electric power detecting modules at PD ends, control whether 48V POE electricity exports
To the watt level of network interface and the POE power supplys of output, netting twine is used to transmit data and POE power supplys.
PD ends network interface is received after network signal and power supply from PSE ends, network signal and power supply separation, and POE power supplys are detectd
Survey module to turn on the POE power supplys received to POE photovoltaic conversion modules, POE electricity is converted into PD systems by POE photovoltaic conversions module
Required voltage unite by system worked well.
For many PD equipment, the power supply for receiving 48V is then converted to a very low voltage, this power conversion effect
Rate is low, and power attenuation is big, wastes energy.
Publication No. CN105357017A patent provides a kind of system and method for stable POE supply voltages.Using
In based on POE technologies, regulation Power Source Equipment to the supply voltage of terminal power receiving equipment, detecting receiving voltage module with it is described
Being connected by electric module in terminal power receiving equipment, by the voltage of electric module described in detecting real-time, produces detecting data；Power receiving equipment
CPU is connected with the detecting receiving voltage module, is exported after handling the detecting data；Power supply unit CPU with it is described
Power receiving equipment CPU connections, the detecting data after reception processing, and the detecting data after the processing is further located
Reason, produces control signal；Power supply of the feedback regulation module respectively with the power supply unit CPU, Power Source Equipment is connected,
The supply voltage of the power supply is adjusted according to the control signal.The invention utilizes defeated by CPU regulation voltages
Go out.
The content of the invention
The technical problem to be solved in the present invention purpose is to provide a kind of system and method for adjustable POE supply voltages, used
Low to solve existing POE transformation efficiencies of powering, power attenuation is big, the problem of wasting electric energy.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of system of adjustable POE supply voltages, is made up of power supply end equipment and receiving end equipment；
The receiving end equipment includes：
POE electric power detecting modules, for detect the receiving end equipment by electrical power signal and feed back to the power supply
End equipment；
Resistance is detected, for receiving the detecting current-carrying ripple of the power supply end equipment transmission and according to the resistance of the detecting resistance
Value returns to level signal to the power supply end equipment；
The power supply end equipment includes：
Feeder ear power module, for adjusting supply voltage；
Feeder ear switch controller, is connected with the feeder ear power module, for sending detecting carrier wave and according to described
The level signal that receiving end equipment is returned calculates the voltage value after adjustment.
Further, the power supply end equipment is connected with the receiving end equipment by netting twine.
Further, the receiving end equipment also includes：
Photovoltaic conversion module, is connected with the POE electric power detectings module, is set for POE electricity to be converted into the receiving end
Standby supply voltage.
Further, the receiving end equipment also includes：
Controlling switch, connects the POE electric power detectings module and the detecting resistance, for controlling the detecting resistance
Detecting.
Further, the controlling switch is opened after the receiving end equipment has been fed back by electrical power signal.
Further, the power supply end equipment also includes：
Feedback line, connects the feeder ear power module and the feeder ear switch controller, for according to the detecting
The resistance of resistance produces level signal and is sent to the feeder ear power module.
A kind of method of adjustable POE supply voltages, including step：
S1, the resistance for detecting resistance for obtaining receiving end equipment；
S2, the voltage output value according to resistance adjustment power supply end equipment.
Further, step S1 is specifically included：
Send detecting carrier wave；
The receiving end equipment is determined whether, if so, the detecting carrier wave passes through the detecting resistance；
Obtain the resistance of the detecting resistance.
Further, the step of detecting carrier wave passes through the detecting resistance specifically includes：
The detecting carrier wave is returned by electrical power signal and touched after the POE electric power detecting modules by the receiving end equipment
Controlling switch is sent out so that the detecting carrier wave passes through the detecting resistance.
Further, step S2 is specifically included：
Level signal is returned to the power supply end equipment according to the resistance of the detecting resistance；
The voltage output value of the power supply end equipment is adjusted according to the level signal.
It is of the invention compared with traditional technology, have the following advantages：
The POE power supplys that the present invention is exported provide accurate magnitude of voltage according to demand, and receiving end equipment switching levels are caused
Power attenuation is few, efficiently solve POE voltages too it is high cause by electric power conversion efficiency it is low the problem of.
Brief description of the drawings
Fig. 1 is POE power supply the principle figures；
Fig. 2 is PSE structural representations inside POE interchangers；
Fig. 3 is the POE electric power-feeding structure schematic diagrames that prior art is provided；
Fig. 4 is the adjustable POE electric power-feeding structures schematic diagram that the present invention is provided；
Fig. 5 is a kind of system construction drawing for adjustable POE supply voltages that embodiment one is provided；
Fig. 6 is a kind of method flow diagram for adjustable POE supply voltages that embodiment two is provided；
Fig. 7 is a kind of method flow diagram for adjustable POE supply voltages that embodiment three is provided；
Fig. 8 is a kind of method flow diagram for adjustable POE supply voltages that example IV is provided.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
A kind of system of adjustable POE supply voltages is present embodiments provided, is made up of power supply end equipment and receiving end equipment；
As shown in figure 5,
The receiving end equipment includes：
POE electric power detectings module 11, for detect the receiving end equipment by electrical power signal and feed back to the confession
Electric end equipment；
Photovoltaic conversion module 12, is connected with POE electric power detectings module 11, for POE electricity to be converted into receiving end equipment
Supply voltage；
Resistance 13 is detected, for receiving the detecting current-carrying ripple of the power supply end equipment transmission and according to the detecting resistance
Resistance returns to level signal to the power supply end equipment；
Controlling switch 14, connection POE electric power detectings module 11 and detecting resistance 13, the resistance for controlling detecting resistance 13
Value；
The power supply end equipment includes：
Feeder ear power module 21, for adjusting supply voltage；
Feeder ear switch controller 22, is connected with the feeder ear power module, for sending detecting carrier wave and according to institute
The level signal for stating the return of receiving end equipment calculates the voltage value after adjustment.
Feeder ear power module 21 and feeder ear switch controller 22 are connected by feedback line.
Feedback line connection feeder ear power module 21 and feeder ear switch controller 22, for the resistance according to detecting resistance 13
Value produces level signal and is sent to feeder ear power module 21.
POE is that a kind of utilization netting twine transmits data to rear end equipment and while the technology powered, makes receiving end equipment (referred to as
PD) need not be additionally provided power can just work, as shown in figure 1, power supply end equipment (abbreviation PSE) is originally used for 4 couple of transmission
The wherein two pairs voltage in the additional 48V in net mouth transformer rear end of line is realized and distal end PD is powered.
POE refer to existing Ethernet Cat.5 wiring architecture do not make any changes in the case of, for some
While IP-based terminal (such as IP telephone machine, wireless local network connecting point AP, web camera) transmission data-signal, also
The technology of direct current supply can be provided for this kind equipment.POE technologies can ensure existing while ensuring that existing structureization wiring is safe
There is the normal operation of network, cost is reduced to greatest extent.
POE is also referred to as electric power system or active Ethernet based on LAN, is also called POE for short sometimes,
This be utilize existing standard Ethernet transmission cable while transmission data and electrical power newest standards specification, and maintain with
Existing Ethernet system and the compatibility of user.
The present embodiment provide one kind can adjustable POE electric power systems of output voltage as needed, it can be according to PD ends
Required voltage, adjusts PSE output voltage values, reduces the pressure difference of input voltage and output voltage in PD equipment, lifting electricity
Source transformation efficiency.
As shown in figure 4, Fig. 4 is the adjustable POE electric power-feeding structures schematic diagram that the present invention is provided, the POE with Fig. 3 prior art
Electric power-feeding structure schematic diagram is compared, and has following difference：
First, adding controlling switch and detecting resistance in POE electric power detecting modules.Controlling switch is detectd with POE power supplys
Survey module to be connected, detecting resistance connection controlling switch.
Second, the feedback line that the increase of feeder ear switch controller is connected with feeder ear power module.
A kind of system construction drawing for adjustable POE supply voltages that the present embodiment is provided is as shown in figure 5, the system is by feeder ear
Equipment is constituted with receiving end equipment.
Wherein, power supply end equipment is made up of with receiving end equipment netting twine.
The power supply end equipment is by feeder ear power module 21, feeder ear switch controller 22.
Feeder ear power module 21 is connected with feeder ear switch controller 22 by feedback line.
Feeder ear switch controller 22 and the network interface connection of power supply end equipment.
The receiving end equipment is by POE electric power detectings module 11, photovoltaic conversion module 12, detecting resistance 13 and controlling switch
14 compositions.
The one end of POE electric power detectings module 11 and the network interface connection of receiving end equipment, the other end of POE electric power detectings module 11
It is connected with photovoltaic conversion module.
POE electric power detecting moulds, have detecting resistance 13 on 11, and connect by controlling switch 14.
The detecting electricity of the increase detecting receiving end equipment when detecting POE electric power detecting modules 11 of feeder ear switch controller 22
The step for resistance of resistance 13.
Feeder ear switch controller 22 after the power grade of POE electric power detectings module 11 of receiving end equipment has been detected,
POE electric power detectings module 11 will open controlling switch 14, feeder ear switch controller 22 is detected the detecting under controlling switch 14
The resistance size of resistance 13, feeder ear switch controller 22 will produce one according to the resistance size of detecting resistance 13 on feedback line
Individual level signal, the size of level signal is different according to resistance size, and feeder ear power module 21 is according to the level of feedback line
Size readjusts output voltage values.
In the present embodiment, feeder ear switch controller 22 constantly sends detecting carrier wave, and whether detecting rear end has receiving end to set
It is standby.
Carrier wave or carrier frequency (carrier frequency) are a physical concepts, are the radio waves of a specific frequency, unit Hz,
It is a kind of electromagnetic wave that can be such as modulated to transmit language, music, image or other signals in terms of frequency, amplitude modulation or phase.
If there are receiving end equipment, POE power module 11 of the detecting carrier wave Jing Guo receiving end equipment in detecting rear end, and returns to one
It is individual by electrical power signal to feeder ear switch controller 22, what the signal can be because of POE electric power detectings module 11 is different and different.Return
By electrical power signal frequency and response time by determine receiving end equipment by electrical power.
Such as AT standards 15W, AF standards 30W.
The POE electric power detectings module 11 of receiving end equipment opens the control of detecting resistance 13 after having fed back by electrical power signal
System switch 14.
After controlling switch 14 is opened, feeder ear switch controller 22 will detect carrier wave and flow through detecting resistance 13, and detecting is carried
Wave current is crossed after detecting resistance 13 according to the level signal of one different voltage of resistance size return to feeder ear switch controller 22；
Feeder ear switch controller 22 determines the size of the magnitude of voltage of output to the back-end according to the size of level signal.
Feeder ear switch controller 22 increases after the power grade of receiving end equipment is judged judges rear end demand level
Step, then demand level information by feedback line is sent to feeder ear power module 21.
The POE power supplys of output provide accurate magnitude of voltage according to demand, and the power that receiving end equipment switching levels are caused is damaged
Consumption is fewer.
Embodiment two
A kind of method of adjustable POE supply voltages is present embodiments provided, as shown in fig. 6, including step：
S11：Obtain the resistance of the detecting resistance of receiving end equipment；
S12：The voltage output value of power supply end equipment is adjusted according to resistance.
The method of supplying power to of prior art is that the power feeder ear power module output 48V power supplys of end equipment flow through feeder ear and opened
Gateway controller, feeder ear switch controller communicates with the POE electric power detecting modules of receiving end, controls whether 48V POE electricity exports
To network interface and the POE power sizes of output, the netting twine of connection power supply end equipment and receiving end equipment is used to transmit data
And POE power supplys.
The network interface of receiving end equipment receives network signal and power supply from power supply end equipment, network signal and power supply separation
Afterwards, POE electric power detectings module will receive POE power supplys and turn on to POE photovoltaic conversion modules, and POE photovoltaic conversions module is by POE points
PD system required voltages are converted into by system worked well.
However, existing POE output voltages are fixed as 48V, for many power receiving equipments, 48V power supply is received again
Very low voltage is converted into, transformation efficiency is low, power attenuation is big, wastes energy.
The method that the present embodiment is provided, a detecting resistance is added in receiving end equipment.
Power end equipment detect POE electric power detecting modules when increase detecting receiving end equipment detecting resistance this
Step.
The resistance that end equipment of powering detects resistance by obtaining obtains receiving end equipment required voltage value, so as to adjust confession
The output voltage of electric end equipment, so, the voltage for flowing through receiving end equipment will not be excessive, it is to avoid power attenuation is big, wastes energy
The problems such as amount.
Embodiment three
A kind of method of adjustable POE supply voltages is present embodiments provided, as shown in fig. 7, comprises step：
S21：Send detecting carrier wave；
S22：Receiving end equipment is determined whether, if so, detecting carrier wave is by detecting resistance；
S23：Obtain the resistance of detecting resistance；
S24：The voltage output value for increasing power supply unit end is adjusted according to resistance.
The present embodiment is that the step of detecting carrier wave is by detecting resistance specifically includes step with the difference of embodiment two
S21, step S22 and step S23.
Feeder ear switch controller constantly sends detecting carrier wave, and whether detecting rear end has power receiving equipment connection.
If there are power receiving equipment connection, the POE electric power detecting modules that carrier wave can be Jing Guo receiving end equipment in rear end, and returns to one
By electrical power signal to feeder ear switch controller, the signal is different and different because POE electric power detecting modules.
Return determined by electrical power signal frequency and response time receiving end equipment by electrical power.
Returned after detecting POE electric power detecting modules of the carrier wave by receiving end equipment by electrical power signal and trigger receiving end
The controlling switch of equipment.
The controlling switch of receiving end equipment is opened, the detecting resistance that detecting carrier wave can be Jing Guo receiving end equipment.Feeder ear is set
Standby feeder ear switch controller detects the resistance size of detecting resistance, power supply end equipment according to the resistance size of resistance again
Adjust output voltage.
Embodiment
A kind of method of adjustable POE supply voltages is present embodiments provided, as shown in figure 8, including step：
S31：Send detecting carrier wave；
S32：Receiving end equipment is determined whether, if so, detecting carrier wave is by detecting resistance；
S33：Obtain the resistance of detecting resistance；
S34：Level signal is returned to end equipment of powering according to the resistance of detecting resistance；
S35：The voltage output value of power supply end equipment is adjusted according to level signal.
The present embodiment is with embodiment two, three differences, and the voltage output value for end equipment of powering is adjusted according to resistance
Specifically include step S34 and step S35.
Carrier wave is detected after detecting resistance according to the level signal of one different voltage of resistance size return to feeder ear
Switch controller.
Feeder ear switch controller produces a level signal on feedback line, and the size of level signal is according to resistance size
And it is different, feeder ear power module receives level signal, and the size of output voltage is readjusted according to level signal size.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of system of adjustable POE supply voltages, it is characterised in that be made up of power supply end equipment and receiving end equipment；
The receiving end equipment includes：
POE electric power detecting modules, for detect the receiving end equipment by electrical power signal and feed back to the feeder ear and set
It is standby；
Resistance is detected, for receiving the detecting current-carrying ripple of the power supply end equipment transmission and being returned according to the resistance of the detecting resistance
Level signal is returned to the power supply end equipment；
The power supply end equipment includes：
Feeder ear power module, for adjusting supply voltage；
Feeder ear switch controller, is connected with the feeder ear power module, for sending detecting carrier wave and according to described by electricity
The level signal that end equipment is returned calculates the voltage value after adjustment.
2. a kind of system of adjustable POE supply voltages according to claim 1, it is characterised in that the power supply end equipment
It is connected with the receiving end equipment by netting twine.
3. a kind of system of adjustable POE supply voltages according to claim 1, it is characterised in that the receiving end equipment
Also include：
Photovoltaic conversion module, is connected with the POE electric power detectings module, for POE electricity to be converted into the receiving end equipment
Supply voltage.
4. a kind of system of adjustable POE supply voltages according to claim 1, it is characterised in that the receiving end equipment
Also include：
Controlling switch, connects the POE electric power detectings module and the detecting resistance, for controlling detecing for the detecting resistance
Survey.
5. the system of a kind of adjustable POE supply voltages according to claim 3, it is characterised in that the controlling switch exists
The receiving end equipment has been fed back to be opened by after electrical power signal.
6. a kind of system of adjustable POE supply voltages according to claim 1, it is characterised in that the power supply end equipment
Also include：
Feedback line, connects the feeder ear power module and the feeder ear switch controller, for according to the detecting resistance
Resistance produce level signal and be sent to the feeder ear power module.
7. a kind of method of adjustable POE supply voltages, it is characterised in that including step：
S1, the resistance for detecting resistance for obtaining receiving end equipment；
S2, the voltage output value according to resistance adjustment power supply end equipment.
8. the method for a kind of adjustable POE supply voltages according to claim 7, it is characterised in that step S1 is specifically included：
Send detecting carrier wave；
The receiving end equipment is determined whether, if so, the detecting carrier wave passes through the detecting resistance；
Obtain the resistance of the detecting resistance.
9. a kind of method of adjustable POE supply voltages according to claim 8, it is characterised in that the detecting carrier wave warp
The step of crossing the detecting resistance specifically includes：
The detecting carrier wave returns by electrical power signal after the POE electric power detecting modules by the receiving end equipment and triggers control
System is switched so that the detecting carrier wave passes through the detecting resistance.
10. the method for a kind of adjustable POE supply voltages according to claim 7, it is characterised in that step S2 is specifically wrapped
Include：
Level signal is returned to the power supply end equipment according to the resistance of the detecting resistance；
The voltage output value of the power supply end equipment is adjusted according to the level signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292687.4A CN106972936A (en) | 2017-04-28 | 2017-04-28 | A kind of system and method for adjustable POE supply voltages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710292687.4A CN106972936A (en) | 2017-04-28 | 2017-04-28 | A kind of system and method for adjustable POE supply voltages |
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| CN106972936A true CN106972936A (en) | 2017-07-21 |
Family
ID=59330249
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| CN201710292687.4A Pending CN106972936A (en) | 2017-04-28 | 2017-04-28 | A kind of system and method for adjustable POE supply voltages |
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