CN107809278A - A kind of optical fiber protecting equipment and method of electric power EPON - Google Patents
A kind of optical fiber protecting equipment and method of electric power EPON Download PDFInfo
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- CN107809278A CN107809278A CN201711090955.0A CN201711090955A CN107809278A CN 107809278 A CN107809278 A CN 107809278A CN 201711090955 A CN201711090955 A CN 201711090955A CN 107809278 A CN107809278 A CN 107809278A
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- line terminal
- electric power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of optical fiber protecting equipment and method of electric power EPON, including：At least two intelligent optical line terminals and Optical Distribution Network and optical network unit；First intelligent optical line terminal and the second intelligent optical line terminal are connected with the optical network unit；The intelligent optical line terminal sends the switching that pretection switch management information completes circuit by the optical network unit.Technical scheme provided by the invention improves the reliability of electric power EPON, optical fibre protection inverting speed and self-healing ability.
Description
Technical field
The present invention relates to electric power optical communication field technical field, and in particular to a kind of fiber optic protection of electric power EPON
Device and method.
Background technology
EPON is made up of optical line terminal, Optical Distribution Network and optical network unit.Wherein Optical Distribution Network includes
Optical fiber and optical splitter, the network topology structure of Optical Distribution Network is determined by the various combination mode of optical fiber and optical splitter, common
There are star-like, tree-shaped, bus-type etc..
EPON is mainly used in collection and transmission with power information in power system.Due to the spy of power system
Different property, the requirement of real-time, reliability, network self-healing ability with power information transmission is than general civilian, industrial control
Information requirements processed are higher, and fiber optic protection can be completed at the appointed time when finding circuit or faulty equipment failure by, which usually requiring that, falls
Change.The EPON in adapted telecommunication net lifts optical fibre protection inverting ability using multilevel redundancy more at present, such as：①
Active and standby optical line terminal, single optical line terminal double-PON port (double optical modules and double MAC chips), list are set at EPON end
Optical line terminal double optical modules and single MAC etc.；2. Optical Distribution Network is using active and standby optical fiber, annular networking etc.；3. in optical-fiber network list
First end sets active and standby optical network unit, monochromatic light NE double-PON port (double optical modules and double MAC chips), monochromatic light NE
Double optical modules and single MAC chips etc..Different degrees of pretection switch ability is realized by the various combination of above-mentioned measure.It is existing
The shortcomings that technology is that lifting pretection switch ability must increase redundancy setting as far as possible, but redundancy sets and will greatly promoted into
This.
Patent of invention " pretection switch method, system and equipment based on Ethernet passive optical network-
200710119203.2；101350679B " proposes a kind of pretection switch method based on Ethernet passive optical network, system and set
Standby, the patent is provided with protection passage in optical line terminal and optical network unit, is being protected by assigned frequency during normal work
APS protocol massages are transmitted in passage.The protection passage that the patent redundancy is set is hot redundancy, even if not switching
To the circuit, the circuit is also at working condition.
Patent of invention " image intensifer and its fibre circuit guard method -201310298718.9；104301026B " is proposed
A kind of fibre circuit guard method, this method monitor optical signal power, controller in real time by optical attenuator luminous power test point
Failure is judged whether according to the optical signal power data, and by controlling the switching to realize falling for Work route of photoswitch
Change.The fiber circuit management of this method is based only on the optical signal power measured.
The content of the invention
In order to lift the reliability of electric power EPON, optical fibre protection inverting speed and self-healing ability, the present invention proposes
A kind of optical fiber protecting equipment and method of electric power EPON,
A kind of optical fiber protecting equipment of electric power EPON, including：At least two intelligent optical line terminals and optical-fiber network
Unit；
Each intelligent optical line terminal is connected with the optical network unit；
The intelligent optical line terminal, for monitoring the current state of every optical network line in real time, if monitoring wherein
One or more optical network line breaks down, then sends the communication broadcast optical signal comprising pretection switch management information；
The optical network unit, based on the pretection switch management information, faulty line is switched into regular link.
Preferably, the optical fiber protecting equipment includes：Completely identical in structure first intelligent optical line terminal and the second intelligence
Can optical line terminal.
Preferably, the intelligent optical line terminal is deployed in identical change motor house or is deployed in different transformer station's computer rooms.
Preferably, each intelligent optical line terminal includes：Management module, optical time domain reflection module and communication module.
Management module is connected with communication module and optical time domain reflection module respectively.
Preferably, the optical fiber protecting equipment also includes：The light being connected between intelligent optical line terminal and optical network unit
Distribute network；
The Optical Distribution Network includes：Multiple optical splitters；Connected between multiple optical splitters by optical fiber.；
The first port of first order optical splitter and the described first intelligent optical line terminal and the second intelligent optical link are whole
End is connected by the optical fiber, and the first port of the optical splitter in addition to first order optical splitter passes through the optical fiber and upper level
The optical splitter second port connection；
3rd port of the optical splitter is connected by the optical fiber with the optical module in the optical network unit.
Preferably, the optical network unit includes：First optical module, the second optical module, MAC chips, selecting module and friendship
Change the mold block；
The Switching Module is connected with the MAC chips, for receiving the pretection switch management information and by the guarantor
Change switch management information be converted to switch instruction after be sent to the MAC chips；Selecting module described in the MAC chip controls is complete
Into the switching of circuit；
It is described to switch instruction and include：Switch log-on message；
3rd port phase of optical splitter of the one end of first optical module with being connected into the first Intelligent optical fiber road terminal
Even, the other end is connected by the selecting module with the MAC chips；
3rd port phase of optical splitter of the one end of second optical module with being connected into the second Intelligent optical fiber road terminal
Even, the other end is connected by the selecting module with the MAC chips.
Preferably, it is described be responsible to replace switch management information and it is described switching log-on message transmitted in a manner of common ethernet frame.
Preferably, the optical splitter is 1 × 2 optical splitter.
Preferably, the selecting module is selecting switch.
Preferably, it is multiple that the optical network unit, which sets quantity,；
The connection that multiple smooth net units pass through optical fiber and the optical splitter.
A kind of fiber optic protecting method of electric power EPON, including：
First intelligent optical line terminal monitors the optical network line being made up of Optical Distribution Network and optical network unit in real time
It is no to break down；
When a failure occurs it, the described first intelligent optical line terminal issues the communication broadcast light letter of pretection switch management information
Number；
The optical network unit reads the pretection switch management information, disconnects and the described first intelligent optical line terminal
Connect and turn on the connection with the second intelligent optical line terminal.
Preferably, the described first intelligent optical line terminal monitors Optical Distribution Network in real time and whether optical network unit occurs event
Barrier, including：
The first Intelligent optical fiber road terminal is real-time by the first described Intelligent optical fiber road terminal optical time domain reflection module
Whether monitoring optical fiber and optical network unit break down.
Preferably, it is described when a failure occurs it, the first intelligent optical line terminal issues pretection switch management information
Communication broadcast optical signal, including：
When a failure occurs it, the communication module of the described first intelligent optical line terminal is by the communication of pretection switch management information
Broadcast optical signal need to switch the optical network unit that optical fiber connected by the Optical Distribution Network entrance.
Preferably, the optical network unit reads the pretection switch management information, disconnects and the described first intelligent light
The connection of road terminal simultaneously turns on the connection with the second intelligent optical line terminal, including：
Switching Module, which reads the pretection switch management information and is converted to the pretection switch management information, switches finger
Order, and it is sent to MAC chips；
The MAC chips switch off the connection with first optical module according to the instruction of switching of reception, control selections,
It is closed at the connection with second optical module；
The switching log-on message uploads to the second intelligent optical line terminal by second optical module.
Immediate prior art is compared, and technical scheme provided by the invention has the advantages that：
1st, technical scheme provided by the invention, by setting double intelligent optical line terminals, hand being used in Optical Distribution Network
Shake hands networking structure and to design using double optical modules in optical network unit, pass through selecting module and complete optical fibre protection inverting mistake
The structure of journey, improves the reliability, optical fibre protection inverting speed, self-healing ability of electric power EPON, and extends redundancy
In the life-span of circuit, the difficulty of multi-line management and the cost of management can be reduced.
2nd, the networking structure in technical scheme provided by the invention is easy to extend.Connected under same intelligent optical line terminal
Optical network unit, can whole redundancy links to same standby intelligent optical line terminal, also can partly connect, remaining company
It is connected to other standby intelligent optical line terminals.Intelligent optical line terminal can also distribute a part of port and connect light as main line
NE, remaining port is as spare line connecting optical network unit.
The 3rd, double optical modules, single MAC chips, single cross mold changing are set in the optical network unit in technical method provided by the invention
Block.Double optical modules of optical network unit are connected with active and standby optical fiber respectively, physically ensure that optical fiber switches protective capability, use
Single MAC chips, single-swap module reduce the manufacturing cost and management cost of optical network unit.
4th, technical scheme provided by the invention by EPON using networking mode hand in hand, with optical network unit
When the optical fiber or optical line terminal of connection break down, optical network unit can be switched into alternate route rapidly.
5th, optical time domain reflection module is integrated in the intelligent optical line terminal in technical method provided by the invention, can be existed in real time
Line monitors multiple parameters of optical fiber, and data supporting is provided for optical fibre protection inverting.
Brief description of the drawings
Fig. 1 is a kind of fiber optic protecting method of electric power EPON proposed by the present invention and the explanation figure of device；
Fig. 2 is the overall process of an optical fibre protection inverting proposed by the present invention.
Embodiment
For a better understanding of the present invention, present disclosure is done further with reference to Figure of description and example
Explanation.
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention proposes a kind of optical fiber protecting equipment and method of electric power EPON, by setting double intelligent optical links
Terminal, use networking structure hand in hand in Optical Distribution Network and use double optical module designs to be formed in optical network unit
Optical fibre protection inverting structure, while the optical time domain reflection module by being integrated in intelligent optical line terminal monitors optical fiber shape in real time
State, intelligent management is carried out to optical fibre protection inverting according to monitoring result, described device includes：Intelligent optical line terminal collection, light
Distribute network and optical network unit.During the cold redundancy design, i.e. optical network unit normal work of use, only optical module and
Its connected fibre circuit is in running order, and optical line terminal send switch management information also in the working optical fibre circuit
Middle transmission.Technical scheme improves the reliability of electric power EPON, optical fibre protection inverting speed and self-healing energy
Power.
A kind of optical fiber protecting equipment of electric power EPON, including：
At least two intelligent optical line terminals and Optical Distribution Network and optical network unit；
First intelligent optical line terminal and the second intelligent optical line terminal are connected with the optical network unit；
The intelligent optical line terminal sends pretection switch management information and completes cutting for circuit by the optical network unit
Change.
Specifically,
Device includes：Completely identical in structure first intelligent optical line terminal and the second intelligent optical line terminal and light point
Distribution network and optical network unit；
First intelligent optical line terminal or the second intelligent optical line terminal pass through the Optical Distribution Network and the light respectively
NE connects；
First intelligent optical line terminal and the second intelligent optical line terminal include communication module, and communication module is propagated logical
Letter broadcast optical signal includes pretection switch management information；
Optical network unit includes selecting module, and selecting module is according to pretection switch management information control and the first intelligence
Optical line terminal or the second intelligent optical line terminal connection.
Specific embodiment is as shown in figure 1, device includes intelligent optical line terminal, optical network unit and Optical Distribution Network.Its
In, intelligent optical line terminal includes the first intelligent optical line terminal and completely identical in structure second intelligent optical line terminal.
Intelligent optical line terminal, for issuing communication broadcast optical signal to optical network unit, while also receive optical-fiber network list
The communication service optical signal that member is sent, Optical Distribution Network and optical network unit state are monitored, in Optical Distribution Network and optical-fiber network list
When first state breaks down, in communication broadcast optical signal adding pretection switch management information sends to optical network unit, simultaneously
Also the switching log-on message in the communication service optical signal that optical network unit uploads is read, completes log-on message typing.The guarantor
Change switch management information and it is described switching log-on message transmitted in a manner of common ethernet frame.And the first intelligent optical line terminal
And completely identical in structure second intelligent optical line terminal is deployed in different substation computer room.
Optical network unit, the communication broadcast optical signal issued for receiving intelligent optical line terminal, while also to intelligent light
Line terminal uplink business optical signal, when Optical Distribution Network and optical network unit state break down, it is wide to read communication
The pretection switch management information in optical signal is broadcast, circuit switching is internally completed by selecting module, and believe in communication service light
Switching log-on message is added in number, and is uploaded to intelligent optical line terminal.
Optical Distribution Network includes primary circuit, extension wire；And primary circuit, extension wire are comprising optical fiber, light splitting
Device；Optical splitter is 1 × 2 optical splitter；The optical splitter includes multistage optical splitter.Optical splitter that primary circuit includes, extension wire
Comprising optical splitter, optical network unit be respectively equipped with multiple, and the optical splitter quantity that includes of primary circuit, extension wire include
Optical splitter quantity, optical network unit quantity are equal.
The first port of first order optical splitter passes through institute with the first intelligent optical line terminal and the second intelligent optical line terminal
Optical fiber connection is stated, the first port of the optical splitter in addition to first order optical splitter is connected by optical fiber and upper level optical splitter second port
Connect；3rd port of optical splitter is connected by the optical fiber with the optical module of the optical network unit.
Specifically, first order optical splitter first port is connected with intelligent optical line terminal in Optical Distribution Network, except the first order
All optical splitters outside optical splitter, its first port are connected with its upper level optical splitter second port by optical fiber, its 3rd end
Mouth is connected by optical fiber with optical network unit；First intelligent optical line terminal is connected with primary circuit, optical network unit；Second intelligence
Energy optical line terminal is connected with extension wire, optical network unit.
The identical first intelligent optical line terminal of structure and the second intelligent optical line terminal include management module, led to
Believe module and optical time domain reflection module；
Management module is connected with communication module and optical time domain reflection module respectively.Optical time domain reflection module is used for into optical fiber
Detecting optical pulses, and backscattering or reflected signal in reception optical fiber are injected, optical time domain reflection module is by processing backwards to scattered
Penetrate or reflected signal draws multiple parameters of optical fiber, in addition to optical signal power, can also measure the temperature of fibre circuit, stress, shake
The parameter such as dynamic；
Multiple parameters are submitted to management module by optical time domain reflection module, and management module is according to the operation results of multiple parameters
Judge whether to need pretection switch optical fiber, when needing pretection switch optical fiber, management module generation pretection switch management information is concurrent
Communication module is given, communication module handles the signal and added in communication broadcast optical signal；Also, optical time domain reflection module is with leading to
Letter module is run parallel；
Communication module sends communications status information to management module, and management module sends telecommunication management information to communication module
And pretection switch management information；Management module sends optical time domain transmitting management information to optical time domain transmitter module.
Optical network unit also includes：First optical module, the second optical module, MAC chips and Switching Module；
Switching Module is connected with the MAC chips, and management letter is switched for receiving to be responsible to replace to switch management information and will be responsible to replace
Breath be converted to switch instruction after be sent to the MAC chips；
Switching instruction includes：Switch log-on message；
3rd port of optical splitter of the one end of the first optical module with being connected into the first Intelligent optical fiber road terminal is connected, the other end
It is connected by selecting module with the MAC chips；
3rd port of optical splitter of the one end of the second optical module with being connected into the second Intelligent optical fiber road terminal is connected, the other end
It is connected by selecting module with the MAC chips.
Specifically as shown in figure 1, optical network unit also includes optical module, MAC chips, Switching Module；
Optical module includes the first optical module, the second optical module；
First optical module, the second optical module have in synchronization and only one is connected with MAC chips, and MAC chips are with handing over
Change the mold block connection；MAC chips acquiescence is connected with the first optical module.
When optical module receives the communication broadcast optical signal that intelligent optical line terminal issues, communication broadcast is converted into
Sent after PON data frames to MAC chips, MAC chips and communication broadcast PON data frames are converted into the common ethernet frame of communication broadcast
After be sent to Switching Module, Switching Module Cache Communication broadcasts common ethernet frame, and common ethernet frame is carried out business classification,
Go tag to operate and complete to forward；
When Switching Module receives the communication service common ethernet frame of user's upload, Switching Module is common to communication service
Ethernet frame carries out 4B/5B error correction, insertion lead code, beat user tag after transmission to MAC chips, MAC chips are by communication service
Common ethernet frame delivers to optical module, the common PON data of optical module communication service after being converted to the common PON data frames of communication service
Frame is converted to injection fibre after communication service optical signal；
When Switching Module reads the pretection switch management information in the common ethernet frame of communication broadcast, to MAC chips
Instruction is switched in transmission, and MAC chips disconnect with the optical module being currently connected, and is produced connection with another optical module, is exchanged simultaneously
Module adds switching log-on message in the common ethernet frame of communication service.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of fiber optic protection side of electric power EPON
Method, a kind of fiber optic protecting method of electric power EPON is further described below：
Another object of the present invention is to propose a kind of fiber optic protecting method of electric power EPON, including：
First intelligent optical line terminal monitors Optical Distribution Network in real time and whether optical network unit breaks down；
When a failure occurs it, the communication module of the first intelligent optical line terminal issue pretection switch management information communication it is wide
Broadcast optical signal；
Optical network unit reads the pretection switch management information, is switched over by selecting module, disconnects and the first intelligence
The connection of energy optical line terminal simultaneously turns on the connection with the second intelligent optical line terminal.
First intelligent optical line terminal monitors Optical Distribution Network in real time and whether optical network unit breaks down, including：
First Intelligent optical fiber road terminal by the first Intelligent optical fiber road terminal optical time domain reflection module monitor in real time optical fiber and
Whether optical network unit breaks down.
When a failure occurs it, the first intelligent optical line terminal issues the communication broadcast optical signal of pretection switch management information,
Including：
When a failure occurs it, the communication module of the first intelligent optical line terminal is by the communication broadcast of pretection switch management information
Optical signal need to switch the optical network unit that optical fiber connected by the Optical Distribution Network entrance；
Otherwise, the first intelligent optical line terminal communication module normally sends communication broadcast optical signal.
Optical network unit reads the pretection switch management information, is switched over by selecting module, disconnects and the first intelligence
The connection of energy optical line terminal simultaneously turns on the connection with the second intelligent optical line terminal, including：
Selecting module is selecting switch；Optical network unit also includes Switching Module, MAC chips, passes through first order optical splitter
The first optical module for being connected with the first intelligent optical line terminal of the 3rd port and by the 3rd port of first order optical splitter with
Second optical module of the second intelligent optical line terminal connection；
Switching Module, which reads the pretection switch management information and is converted to pretection switch management information, switches instruction, and
It is sent to MAC chips；
Switching instruction includes：Switch log-on message；
MAC chips switch off the connection with the first optical module, are closed at according to the instruction of switching of reception, control selections
With the connection of the second optical module；
Switching log-on message uploads to the second intelligent optical line terminal by the second optical module.
Specifically, embodiment is as shown in Fig. 2 the first intelligent optical line terminal is monitoring optical fiber, optical network unit failure
When, pretection switch management information is added in its communication broadcast sent optical signal, and inject coupled primary circuit
In optical fiber, enter optical splitter from primary circuit optical splitter first port, communication broadcast optical signal is divided into two-way by optical splitter, all the way
Through optical splitter second port injection fibre, the first port of the next optical splitter entered back into the circuit of same optical splitter, separately
All the way through the port injection fibre of optical splitter the 3rd, the optical network unit that optical fiber is connected need to be switched by finally entering, optical network unit
Connection switching is completed inside optical network unit after reading pretection switch management information, then optical network unit is in communication service
Switching log-on message is added in optical signal, and is injected in the optical fiber of extension wire, optical splitter is accessed by the port of optical splitter the 3rd,
The communication service optical signal uploaded in optical splitter with next stage optical splitter second port carries out multiplex, is then injected into optical fiber, most
Enter the second intelligent optical line terminal afterwards, the second intelligent optical line terminal reads optical network unit and uploads to obtain switching registration letter
Breath, is automatically performed Data Enter；
First intelligent optical line terminal no longer issues communication broadcast optical signal through primary circuit to optical network unit, but
Two intelligent optical line terminals issue communication broadcast optical signal through extension wire to optical network unit；
Optical network unit to the first intelligent optical line terminal uplink business optical signal, but passes through no longer through primary circuit
Extension wire is to the second intelligent optical line terminal uplink business optical signal.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Embodiments of the invention are these are only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements done etc., be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (14)
- A kind of 1. optical fiber protecting equipment of electric power EPON, it is characterised in that including：At least two intelligent optical line terminals And optical network unit；Each intelligent optical line terminal is connected with the optical network unit；The intelligent optical line terminal, for monitoring the current state of every optical network line in real time, if monitoring wherein one Or a plurality of optical network line breaks down, then sends the communication broadcast optical signal comprising pretection switch management information；The optical network unit, based on the pretection switch management information, faulty line is switched into regular link.
- 2. the optical fiber protecting equipment of electric power EPON as claimed in claim 1, it is characterised in that the fiber optic protection dress Put including：Completely identical in structure first intelligent optical line terminal and the second intelligent optical line terminal.
- 3. the optical fiber protecting equipment of electric power EPON as claimed in claim 1 or 2, it is characterised in that the intelligent light Line terminal is deployed in identical change motor house or is deployed in different transformer station's computer rooms.
- 4. the optical fiber protecting equipment of electric power EPON as claimed in claim 1 or 2, it is characterised in that each intelligent light Line terminal includes：Management module, optical time domain reflection module and communication module.Management module is connected with communication module and optical time domain reflection module respectively.
- 5. the optical fiber protecting equipment of electric power EPON as claimed in claim 2, it is characterised in that the optical fiber protecting equipment Also include：The Optical Distribution Network being connected between intelligent optical line terminal and optical network unit；The Optical Distribution Network includes：Multiple optical splitters；Connected between multiple optical splitters by optical fiber；The first port of first order optical splitter is led to the described first intelligent optical line terminal and the second intelligent optical line terminal The optical fiber connection is crossed, the first port of the optical splitter in addition to first order optical splitter passes through described in the optical fiber and upper level Optical splitter second port connects；3rd port of the optical splitter is connected by the optical fiber with the optical module in the optical network unit.
- 6. the optical fiber protecting equipment of electric power EPON as claimed in claim 2, it is characterised in that the optical network unit Including：First optical module, the second optical module, MAC chips, selecting module and Switching Module；The Switching Module is connected with the MAC chips, for receiving the pretection switch management information and being responsible to replace down described Change management information be converted to switch instruction after be sent to the MAC chips；Selecting module described in the MAC chip controls completes line The switching on road；It is described to switch instruction and include：Switch log-on message；3rd port of optical splitter of the one end of first optical module with being connected into the first Intelligent optical fiber road terminal is connected, separately One end is connected by the selecting module with the MAC chips；3rd port of optical splitter of the one end of second optical module with being connected into the second Intelligent optical fiber road terminal is connected, separately One end is connected by the selecting module with the MAC chips.
- 7. the optical fiber protecting equipment of electric power EPON as claimed in claim 6, it is characterised in that described be responsible to replace switches pipe Reason information and the switching log-on message are transmitted in a manner of common ethernet frame.
- 8. the optical fiber protecting equipment of electric power EPON as claimed in claim 4, it is characterised in that the optical splitter is 1 × 2 optical splitters.
- 9. the optical fiber protecting equipment of electric power EPON as claimed in claim 6, it is characterised in that the selecting module is Selecting switch.
- 10. the optical fiber protecting equipment of electric power EPON as claimed in claim 1, it is characterised in that the optical-fiber network list It is multiple that member, which sets quantity,；The connection that multiple smooth net units pass through optical fiber and the optical splitter.
- A kind of 11. fiber optic protecting method of electric power EPON, it is characterised in that including：First intelligent optical line terminal monitors whether the optical network line being made up of Optical Distribution Network and optical network unit is sent out in real time Raw failure；When a failure occurs it, the described first intelligent optical line terminal issues the communication broadcast optical signal of pretection switch management information；The optical network unit reads the pretection switch management information, disconnects the connection with the described first intelligent optical line terminal And turn on the connection with the second intelligent optical line terminal.
- 12. the fiber optic protecting method of electric power EPON as claimed in claim 11, it is characterised in that first intelligence Optical line terminal monitors Optical Distribution Network in real time and whether optical network unit breaks down, including：The first Intelligent optical fiber road terminal is monitored in real time by the first described Intelligent optical fiber road terminal optical time domain reflection module Whether optical fiber and optical network unit break down.
- 13. the fiber optic protecting method of electric power EPON as claimed in claim 11, it is characterised in that described when generation event During barrier, the first intelligent optical line terminal issues the communication broadcast optical signal of pretection switch management information, including：When a failure occurs it, the communication module of the described first intelligent optical line terminal is by the communication broadcast of pretection switch management information Optical signal need to switch the optical network unit that optical fiber connected by the Optical Distribution Network entrance.
- 14. the fiber optic protecting method of electric power EPON as claimed in claim 11, it is characterised in that the optical-fiber network list Member reads the pretection switch management information, disconnects the connection with the described first intelligent optical line terminal and turns on and the second intelligence The connection of optical line terminal, including：Switching Module, which reads the pretection switch management information and is converted to the pretection switch management information, switches instruction, and It is sent to MAC chips；The MAC chips switch off the connection with first optical module according to the instruction of switching of reception, control selections, simultaneously Closure and the connection of second optical module；The switching log-on message uploads to the second intelligent optical line terminal by second optical module.
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