CN102983982B - Average voltage distribution method, system and multiport power receiving equipment - Google Patents
Average voltage distribution method, system and multiport power receiving equipment Download PDFInfo
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Abstract
The invention discloses a kind of average voltage distribution method, system and multiport power receiving equipment.Wherein, the method is included in after each feed equipment powers on, and multiport power receiving equipment sends query messages to inquire about the output voltage values of each feed equipment to each feed equipment periodically；After the output voltage values receiving each feed equipment feedback, multiport power receiving equipment detects the magnitude of voltage from each feed equipment self received；Output voltage values according to the magnitude of voltage from each feed equipment detected and each feed equipment determines that each feed equipment is to the Ethernet cable path loss between multiport power receiving equipment；The average voltage level detected according to path loss and multiport power receiving equipment calculates the desired output magnitude of voltage of each feed equipment respectively, and the desired output magnitude of voltage of each feed equipment is respectively sent to each feed equipment to control the output voltage values of each feed equipment.The present invention improves reasonability and the fairness of the reverse POE of broadband access terminal device.
Description
Technical field
The present invention relates to broadband access network, especially, relate to a kind of average voltage distribution method, system and multiport power receiving equipment.
Background technology
In extensive broadband access network process of construction, find that portion access terminal equipment power taking difficulty causes and cannot install, even if install reluctantly is also that maintenance personnel has laid 220V power line, there is the problem that installation effectiveness is low at present.Reversely power over Ethernet then can transmit power supply by ethernet line, rely on Ethernet feed equipment (PoweroverEthernet, PoE) it is low-voltage DC by the power supply transformation of 220V, and be jointly transmitted in category-5 cable with Ethernet data signal, reach the purpose of reverse power supply.
But, due to category-5 cable transmission performance and reverse Ethernet feed equipment all property of there are differences, so causing the mean allocation that cannot realize power supply inside reverse Ethernet system, so that some wide band access user power consumption is many, the electric lighting bill is heavy, and other user power utilization amounts are little could be used that broadband services even without power supply, the charge for electricity is small, does not have fairness to user.
Summary of the invention
The technical problem that the invention solves the problems that is to provide a kind of average voltage distribution method, system and multiport power receiving equipment, it is possible to realize the mean allocation of voltage in reverse POE system.
According to an aspect of the invention, it is proposed that a kind of average voltage distribution method, being included in after each feed equipment powers on, multiport power receiving equipment sends query messages to inquire about the output voltage values of each feed equipment to each feed equipment periodically；After the output voltage values receiving each feed equipment feedback, multiport power receiving equipment detects the magnitude of voltage from each feed equipment self received；Output voltage values according to the magnitude of voltage from each feed equipment detected and each feed equipment determines that each feed equipment is to the Ethernet cable path loss between multiport power receiving equipment；The average voltage level detected according to path loss and multiport power receiving equipment calculates the desired output magnitude of voltage of each feed equipment respectively, and the desired output magnitude of voltage of each feed equipment is respectively sent to each feed equipment to control the output voltage values of each feed equipment.
According to a further aspect in the invention, it is also proposed that a kind of multiport power receiving equipment, including voltage query unit, for after each feed equipment powers on, send query messages to inquire about the output voltage values of each feed equipment to each feed equipment periodically；Voltage detection unit, is connected with voltage query unit, for, after the output voltage values receiving each feed equipment feedback, detecting the magnitude of voltage from each feed equipment self received；Path loss determines unit, it is connected with voltage query unit and voltage detection unit, for determining that according to the output voltage values of the magnitude of voltage from each feed equipment that detects and each feed equipment each feed equipment is to the Ethernet cable path loss between multiport power receiving equipment；Expected value determines unit, determine that unit is connected with path loss, average voltage level for detecting according to path loss and multiport power receiving equipment calculates the desired output magnitude of voltage of each feed equipment respectively, and the desired output magnitude of voltage of each feed equipment is respectively sent to each feed equipment to control the output voltage values of each feed equipment.
According to another aspect of the invention, it is also proposed that a kind of average voltage distribution system, including multiport power receiving equipment；Multiple feed equipments, are connected with multiport power receiving equipment by Ethernet cable respectively, for providing power supply and multiport power receiving equipment alternately and to accept the control to output voltage of the multiport power receiving equipment for multiport power receiving equipment.
Average voltage distribution method, system and the multiport power receiving equipment that the present invention provides, the voltage controlling each feed equipment by measuring each feed equipment to the Ethernet cable path loss between multiport power receiving equipment exports, make to arrive multiport power receiving equipment Shi Ge road voltage identical, it is achieved thereby that the average voltage distribution of internal system.The present invention improves the reasonability of the reverse POE of broadband access terminal device, fairness, safety, may advantageously facilitate based on being widely popularized and applying in broadband access network of reverse power over Ethernet, while realizing broadband access network construction, create preferable social benefit and economic benefit.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application.In the accompanying drawings:
Fig. 1 is the schematic diagram that the present invention is powered by reverse Ethernet.
Fig. 2 is the schematic flow sheet of an embodiment of average voltage distribution method of the present invention.
Fig. 3 is that the power operation of the present invention safeguards OAM protocol frame format schematic diagram.
Fig. 4 is the schematic flow sheet of another embodiment of average voltage distribution method of the present invention.
Fig. 5 is the structural representation of an embodiment of multiport power receiving equipment of the present invention.
Fig. 6 is the structural representation of another embodiment of multiport power receiving equipment of the present invention.
Fig. 7 is the structural representation of an embodiment of average voltage distribution system of the present invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, the exemplary embodiment of the present invention is wherein described.The exemplary embodiment of the present invention and explanation thereof are used for explaining the present invention, but are not intended that inappropriate limitation of the present invention.
Description only actually at least one exemplary embodiment is illustrative below, never as to the present invention and application thereof or any restriction of use.
Fig. 1 is the schematic diagram that the present invention is powered by reverse Ethernet.
nullAs shown in Figure 1，For the problem solving to install power taking difficulty based on broadband access terminal，Can be that terminal is powered by the method for reverse POE，Specifically，User each side feed equipment (PowerSourcingEquipment，PSE)，I.e.，The equipment of Ethernet cable right-hand component in Fig. 1，220V alternating current is converted to low-voltage DC，Together with Ethernet data signal (such as，Peer-peer protocol (Point-to-PointProtocoloverEthernet on user's Ethernet can be included，PPPoE) online、Web TV (InternetProtocolTelevision，IPTV)、IP speech (VoiceoverIP，The Ethernet data of business such as VOIP)) it is overlapped (i.e.，Voltage is also modulated with certain frequency and transmits together with data signal on Ethernet cable) after together with at the 1/2 of Ethernet cable、3/6 or 4/5、7/8 line is to upper transmission.Additionally, in far-end/outside configuration power receiving equipment (PowerDevice, PD), i.e. the equipment of Ethernet left-hand component in Fig. 1, receive Ethernet data and low-voltage DC simultaneously, and low-voltage DC and data signal are separated.DC source required for low-voltage DC is converted to terminal realizes broadband access terminal reverse power supply.But when for multiport broadband access terminal reverse power supply, due to each category-5 cable transmission performance, the reverse POE device property of there are differences, causing the multiple PSE being deployed in user side is the power distribution that multiport PD cannot ensure when powering averagely to power.For realizing power supply mean allocation, the following embodiment of the present invention adds related hardware chip in PSE and the PD equipment in original system, each PSE and PD equipment possesses independent medium access control layer (MdiumAccessControl, MAC) address, may be used for the maintenance and management realizing PD to PSE, such as, by Operations,Administration And Maintenance (Operation, AdministrationandMaintenance, OAM) interacting message complete the numerical value such as voltage, electric current inquiry, return, the operation such as configuration.Further, it is also possible to for the fault detecting PSE, also need to after once PSE is integrated with lithium battery battery is carried out the work such as regular maintenance, detection.
The following embodiment of the present invention is towards broadband access network multiple users, reverse power over Ethernet is utilized to realize the average voltage distribution of each feed equipment in electric power system, specifically, the Operation and Maintenance protocol realization multiport power receiving equipment based on the power supply detection to each feed equipment power supply characteristic, the power source performance received in conjunction with multiport power receiving equipment, the power supply being controlled each feed equipment by reasonable algorithm is exported, to realize the mean allocation of supply voltage.
Fig. 2 is the schematic flow sheet of an embodiment of average voltage distribution method of the present invention.
As in figure 2 it is shown, this embodiment may comprise steps of:
S202, after each feed equipment powers on, multiport power receiving equipment sends query messages to inquire about the output voltage values (that is, the magnitude of voltage at the node 2 shown in Fig. 1) of each feed equipment to each feed equipment periodically；
S204, after the output voltage values receiving each feed equipment feedback, multiport power receiving equipment detects the magnitude of voltage from each feed equipment self received；
According to the output voltage values of the magnitude of voltage from each feed equipment detected and each feed equipment, S206, determines that each feed equipment is to the Ethernet cable path loss between multiport power receiving equipment；
S208, the average voltage level detected according to path loss and multiport power receiving equipment calculates the desired output magnitude of voltage of each feed equipment respectively, and the desired output magnitude of voltage of each feed equipment is respectively sent to each feed equipment to control the output voltage values of each feed equipment.
This embodiment controls the voltage of each feed equipment and exports by measuring each feed equipment to the Ethernet cable path loss between multiport power receiving equipment, make to arrive multiport power receiving equipment Shi Ge road voltage identical, it is achieved thereby that the average voltage distribution of internal system.The present invention improves the reasonability of the reverse POE of broadband access terminal device, fairness, safety.
In order to improve efficiency of transmission, each feed equipment passes through Ethernet cable transmission to multiport power receiving equipment after DC signal and data signal being mixed；Multiport power receiving equipment is receiving after the mixed signal of each feed equipment, DC signal and data signal is separated, and utilizes DC signal to realize the reverse power supply to multiport power receiving equipment.
Additionally, multiport power receiving equipment and each feed equipment utilize Operation and Maintenance protocol realization each other mutual, when multiport power receiving equipment interacts with each feed equipment, by the corresponding equipment of MAC Address identification of each equipment.
Specifically, the present invention with reference to the OAM agreement of IEEE802.3 standard, define and realize OAM agreement and the related protocol frame that power management is safeguarded, for realizing in reverse POE system multiport PD power receiving equipment and the power detecting of PSE feed equipment and control.For realizing this purpose, embodiments of the invention are maintenance management interaction message between multiport PD power receiving equipment and PSE feed equipment based on OAM protocol format whole new definition.
Fig. 3 is that the power operation of the present invention safeguards OAM protocol frame format schematic diagram.
As it is shown on figure 3, OAM protocol frame format is described as follows:
Destination address (DestinationAddress): PD or the MAC Address of PSE device；
Source address (SourceAddress): the MAC Address of PSE or PD equipment；
Length/Type:OAM Packet Data Unit (PacketDataUnit, PDU) Type is used to encode, the type of Type this message of primary identity, such as, in EPON, this field can be 0x8809, and being used for identifying this OAM message is a slow protocol frame；
Data/PAD: this field, for identifying the payload of OAM protocol frame, comprises mechanism and uniquely identifies (OUI), extended operation code (Ext.Opcode), load (Payload).
Wherein, OUI can serve to indicate that the authority identifier of China Telecom, the most reserved uncertain；Ext.Opcode arranges the most successfully attribute for indicating the PD inquiry voltage properties of PSE, PSE to return the voltage properties of PD, the voltage properties of PD configuration PSE and PSE return PD, such as, Ext.Opcode=03 mark PD configures PSE, other are defined as: 01 mark PD inquires about PSE, the inquiry of 02 mark PSE feedback PD, the setting of 04 mark PSE feedback PD is the most successfully etc.；Payload is for indicating PD to arrange the active voltage attribute of PSE and PSE returns the attributes such as voltage that PD inquired about.
Inquiry between PD and PSE that table 1 below and table 2 define for the embodiment of the present invention and the field description example of configuration:
Table 1
Table 2
Wherein, to be whether that 220V it will be seen that PSE powers on the most normal for detection PSE input voltage；Detection PSE output voltage it will be seen that fault-free causes ensureing that direct current exports on Ethernet cable, and detection PSE output electric current it will be seen that PoE system operating current whether safety, and the too high meeting of electric current causes the faults such as Ethernet cable is aging, short-circuit.
Fig. 4 is the schematic flow sheet of another embodiment of average voltage distribution method of the present invention.
As shown in Figure 4, this embodiment may comprise steps of:
S402, after PSE powers on, PD periodically sends Query Information to inquire about each PSE output voltage values V at node 2PSE1、VPSE2…VPSEn, it is query messages that Ext.Opcode field at query messages can describe this OAM message, and its payload field void value can fill out 0；
S404, after PD receives the output voltage of PSE feedback, detects the reception voltage V of PD end againPD1、VPD2…VPDn(through Ethernet cable transmission)；
S406, owing to output voltage when (1) PSE itself dispatches from the factory may be inconsistent, there is certain error, (2) after life-time service, output voltage also can drift about, (3) after Ethernet cable transmission, owing to the material of the Ethernet cable of different user is different, resistance difference causes loss difference, the voltage the most different (4) of arrival PD is the most different due to each user's house wiring length, and netting twine resistance value also can be variant, causes there is voltage difference, so, PD end can pass through formula Δ VPDn=VPSEn-VPDnIt is calculated the voltage difference between each PSE to PD: Δ VPD1、ΔVPD2…ΔVPDn；
S408, adjusts the output voltage of each PSE by following method, it is ensured that the magnitude of voltage arriving PD end is consistent (having allowed certain error), to realize the mean allocation of supply voltage:
A) the average received voltage of PD end is calculated:
Vp=(VPD1+VPD2+…+VPDn)/n；
B) based on power-source maintenance management agreement, each PSE output voltage is controlled, the output voltage of each PSE is adjusted to:
VPSE1'=Vp+ Δ VPD1
VPSE2'=Vp+ Δ VPD2
…
VPSEn'=Vp+ Δ VPDn。
One of ordinary skill in the art will appreciate that, realize the whole of said method embodiment to be completed by the hardware that programmed instruction is relevant with part steps, aforesaid program can be stored in a calculating device-readable and take in storage medium, this program is upon execution, performing to include the step of said method embodiment, two aforesaid storage mediums can include the various media that can store program code such as ROM, RAM, magnetic disc and CD.
Fig. 5 is the structural representation of an embodiment of multiport power receiving equipment of the present invention.
As it is shown in figure 5, the multiport power receiving equipment 50 of this embodiment may include that
Voltage query unit 51, for after each feed equipment powers on, sends query messages to inquire about the output voltage values of each feed equipment to each feed equipment periodically；
Voltage detection unit 52, is connected with voltage query unit 51, for, after the output voltage values receiving each feed equipment feedback, detecting the magnitude of voltage from each feed equipment self received；
Path loss determines unit 53, it is connected with voltage query unit 51 and voltage detection unit 52, for determining that according to the output voltage values of the magnitude of voltage from each feed equipment that detects and each feed equipment each feed equipment is to the Ethernet cable path loss between multiport power receiving equipment；
Expected value determines unit 54, determine that with path loss unit 53 is connected, average voltage level for detecting according to path loss and multiport power receiving equipment calculates the desired output magnitude of voltage of each feed equipment respectively, and the desired output magnitude of voltage of each feed equipment is respectively sent to each feed equipment to control the output voltage values of each feed equipment.
This embodiment controls the voltage of each feed equipment and exports by measuring each feed equipment to the Ethernet cable path loss between multiport power receiving equipment, make to arrive multiport power receiving equipment Shi Ge road voltage identical, it is achieved thereby that the average voltage distribution of internal system.The present invention improves the reasonability of the reverse POE of broadband access terminal device, fairness, safety.
Fig. 6 is the structural representation of another embodiment of multiport power receiving equipment of the present invention.
As shown in Figure 6, compared with the embodiment in Fig. 5, the multiport power receiving equipment 60 of this embodiment can also include:
Signal separation unit 61, is connected with voltage detection unit 52, for receiving after the mixed signal of each feed equipment, DC signal therein and data signal is separated, and utilizes DC signal to realize the reverse power supply to multiport power receiving equipment.
Additionally, the multiport power receiving equipment of above-described embodiment utilizes the mutual of Operation and Maintenance protocol realization and each feed equipment, when mutual, multiport power receiving equipment passes through each feed equipment of MAC Address identification.
Fig. 7 is the structural representation of an embodiment of average voltage distribution system of the present invention.
As it is shown in fig. 7, the average voltage distribution system 70 of this embodiment may include that
Multiport power receiving equipment 71, specifically, it can be realized by the embodiment in Fig. 5 or Fig. 6；
Multiple feed equipments 72, are connected with multiport power receiving equipment by Ethernet cable respectively, for providing power supply and multiport power receiving equipment alternately and to accept the control to output voltage of the multiport power receiving equipment for multiport power receiving equipment.
When multiport power receiving equipment and multiple feed equipments are mutual, each feed equipment and multiport power receiving equipment are all mutually distinguishable by MAC Address.
The present invention completes power detecting and control based on power-source maintenance management agreement, realizes power supply mean allocation by rational algorithm.This invention major advantage has: realize convenient, use simple, reliable and stable, safety is the most easy-to-use, be particularly well-suited to multiport broadband access terminal is realized the places such as reverse POE.The application ease for use brought because of this invention and easy popularized type are strong especially, can bring considerable social benefit and economic benefit.
In this specification, each embodiment all uses the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and part identical with similar between each embodiment can be with cross-reference.For device embodiment, due to itself and embodiment of the method basic simlarity, so describe is fairly simple, relevant part may refer to the explanation of embodiment of the method part.
Although being described in detail some specific embodiments of the present invention by example, but it should be appreciated by those skilled in the art, above example is merely to illustrate rather than in order to limit the scope of the present invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention above example be modified.The scope of the present invention be defined by the appended claims.
Claims (8)
1. an average voltage distribution method, it is characterised in that including:
After each feed equipment powers on, multiport power receiving equipment sends query messages to inquire about the output voltage values of described each feed equipment to described each feed equipment periodically；
After the output voltage values receiving described each feed equipment feedback, described multiport power receiving equipment detects the magnitude of voltage from described each feed equipment self received；
Output voltage values according to the magnitude of voltage from described each feed equipment detected and described each feed equipment determines the Ethernet cable path loss between described each feed equipment extremely described multiport power receiving equipment；
The average voltage level detected according to described path loss and described multiport power receiving equipment calculates the desired output magnitude of voltage of described each feed equipment respectively, and the desired output magnitude of voltage of described each feed equipment is respectively sent to described each feed equipment to control the output voltage values of described each feed equipment, make to arrive described multiport power receiving equipment Shi Ge road voltage identical, it is achieved thereby that the average voltage distribution of internal system；
Wherein, multiport power receiving equipment described in Operation and Maintenance protocol realization and mutual between described each feed equipment are utilized.
Average voltage distribution method the most according to claim 1, it is characterised in that described method also includes:
Described each feed equipment DC signal and data signal are mixed after by described Ethernet cable transmission extremely described multiport power receiving equipment；
Described multiport power receiving equipment is receiving after the mixed signal of described each feed equipment, described DC signal and described data signal is separated, and utilizes described DC signal to realize the reverse power supply to described multiport power receiving equipment.
Average voltage distribution method the most according to claim 1, it is characterised in that when described multiport power receiving equipment interacts with described each feed equipment, by the corresponding equipment of MAC Address identification of each equipment.
4. a multiport power receiving equipment, it is characterised in that including:
Voltage query unit, for after each feed equipment powers on, sends query messages to inquire about the output voltage values of described each feed equipment to described each feed equipment periodically；
Voltage detection unit, is connected with described voltage query unit, for, after the output voltage values receiving described each feed equipment feedback, detecting the magnitude of voltage from described each feed equipment self received；
Path loss determines unit, it is connected with described voltage query unit and described voltage detection unit, for determining the Ethernet cable path loss between described each feed equipment extremely described multiport power receiving equipment according to the output voltage values of the magnitude of voltage from described each feed equipment detected and described each feed equipment；
Expected value determines unit, determine that unit is connected with described path loss, average voltage level for detecting according to described path loss and described multiport power receiving equipment calculates the desired output magnitude of voltage of described each feed equipment respectively, and the desired output magnitude of voltage of described each feed equipment is respectively sent to described each feed equipment to control the output voltage values of described each feed equipment, make to arrive described multiport power receiving equipment Shi Ge road voltage identical, it is achieved thereby that the average voltage distribution of internal system；
Wherein, described multiport power receiving equipment utilizes the mutual of Operation and Maintenance protocol realization and described each feed equipment.
Multiport power receiving equipment the most according to claim 4, it is characterised in that described multiport power receiving equipment also includes:
Signal separation unit, it is connected with described voltage detection unit, for receiving after the mixed signal of described each feed equipment, DC signal therein and data signal are separated, and utilize described DC signal to realize the reverse power supply to described multiport power receiving equipment.
Multiport power receiving equipment the most according to claim 4, it is characterised in that described multiport power receiving equipment is by each feed equipment described in MAC Address identification.
7. an average voltage distribution system, it is characterised in that including:
Multiport power receiving equipment according to any one of claim 4 to 6；
Multiple feed equipments, are connected with described multiport power receiving equipment by Ethernet cable respectively, for providing power supply and described multiport power receiving equipment alternately and to accept the control to output voltage of the described multiport power receiving equipment for described multiport power receiving equipment.
Average voltage distribution system the most according to claim 7, it is characterised in that described each feed equipment is by multiport power receiving equipment described in MAC Address identification.
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| CN105786070B (en) * | 2014-12-23 | 2019-07-02 | 中兴通讯股份有限公司 | The control device and method of communication network power supply |
| CN104883632B (en) * | 2015-06-12 | 2018-12-18 | 烽火通信科技股份有限公司 | Realize that VDSL flows the device and method of reverse feeding in PON far end system |
| CN106997178A (en) * | 2016-01-25 | 2017-08-01 | 中兴通讯股份有限公司 | A kind of method and system and control device for realizing reverse power supply |
| CN106789106B (en) * | 2016-03-14 | 2021-01-15 | 新华三技术有限公司 | Power supply system and powered device |
| CN107688363B (en) * | 2016-08-03 | 2020-09-29 | 中兴通讯股份有限公司 | Power supply control method and device for communication network |
| CN106487523A (en) * | 2016-09-08 | 2017-03-08 | 上海斐讯数据通信技术有限公司 | A kind of voltage feedback method of network power supply and Voltage Feedback system |
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