CN102291175A - Optical fiber fault detecting system - Google Patents
Optical fiber fault detecting system Download PDFInfo
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- CN102291175A CN102291175A CN2011102288433A CN201110228843A CN102291175A CN 102291175 A CN102291175 A CN 102291175A CN 2011102288433 A CN2011102288433 A CN 2011102288433A CN 201110228843 A CN201110228843 A CN 201110228843A CN 102291175 A CN102291175 A CN 102291175A
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Abstract
The invention provides an optical fiber fault detecting system which comprises a plurality of optical network units, an optical distribution network, an optical line terminal, a plurality of optical fiber monitor terminals and a fault positioning platform, wherein the optical fiber monitor terminals corresponds to the optical network units one by one, and are connected with the corresponding optical network units; the optical network units are connected to the optical distribution network through splitter optical fibers; the optical distribution network is connected to the optical line terminal through main optical fibers; the optical line terminal is connected to the fault positioning platform through a transmitting network; the optical fiber monitor terminals transmit registration service packages to the fault positioning platform regularly; and the fault positioning platform determines the optical fiber fault position according to passive optical network distribution information, the timing length and the registration service packages, displays the optical fiber fault position, and transmits feedback information to the optical fiber monitor terminals. The system provided by the invention has the characteristics of intuition, real time performance and the like, and can be widely used for various network systems.
Description
Technical field
The present invention relates to detection technique, particularly relate to a kind of fiber failure detection system.
Background technology
The fast development of network technology and the universalness of network application make network application become the pith of the modern life, as network communication, shopping at network and network amusement.In existing network, access network copper cash system does not satisfy far away at a high speed and the broadband requirement.EPON (PON, Passive Optical Network) have the broadband, at a high speed, environmental protection and characteristics of energy saving, accepted and disposed, in order to satisfy growing communication user and quicker, better service demand by most operator.
EPON is a kind of optical fiber access technology of point-to-multipoint, EPON comprises optical line terminal (OLT, Optical Line Terminal), optical network unit (ONU, Optical Network Unit) and Optical Distribution Network (ODN, OpticaIDistribution Network); Optical Distribution Network comprises one or more one-level optical splitter (that is, power splitter), and an one-level optical splitter can also connect one or more secondary optical splitter or the like, by that analogy; Each one-level optical splitter, secondary optical splitter or m level optical splitter etc. that are connected to optical network unit all connects a plurality of optical network units, has constituted and has put multipoint configuration; Wherein, m is a natural number.After a large amount of EPONs are settled and disposed, need the detection fiber circuit and determine fault location.For reducing operation and maintenance cost, at the optical line terminal place light path checkout equipment is set, claim optical time domain reflectometer (OTDR.Optical Time Domain Reflectometer) again, detect the trunk optical fiber and the branch optical fiber of whole EPON.Whether optical time domain reflectometer can detect trunk optical fiber more exactly normal.In the testing process of optical time domain reflectometer to branch optical fiber, when branch optical fiber equates substantially to the distance of optical splitter, even adopt high-resolution optical time domain reflectometer, owing to detect apart from shorter, can't practical requirement; When the beam split ratio of optical splitter is very big, the branch optical fiber reflected signal during through optical splitter loss very big, when reflected signal arrived, reflected signal and noise signal mixed, and were difficult to resolution.
This shows that in the prior art, optical time domain reflectometer can't detect the branch optical fiber of the Optical Distribution Network with big splitting ratio; Simultaneously, the monitoring distance of the detection of the equidistant branch optical fiber of optical time domain reflectometer pair and optical splitter is nearer.In addition, in the actual process of deployment of EPON, for various reasons, even the Optical Distribution Network of little splitting ratio, general optical time domain reflectometer also can't detection branches optical fiber.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of real-time detection and the fiber failure detection system that shows the optical fiber link working state directly perceived.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of fiber failure detection system comprises n optical network unit, Optical Distribution Network, optical line terminal, and described system also comprises n optical fiber monitor terminal, fault location platform; Wherein, n optical fiber monitor terminal is corresponding one by one with n optical network unit, the optical network unit that the optical fiber monitor terminal is corresponding with it is connected, optical network unit is connected to Optical Distribution Network by minute optical fiber, Optical Distribution Network is connected to optical line terminal by main fiber, and optical line terminal is connected to the fault location platform by transmitting net; Wherein, n is a natural number,
The optical fiber monitor terminal is used for successively by corresponding optical network unit, Optical Distribution Network, optical line terminal and transmission net, regularly to fault location platform transmission registration service bag; By transmitting net, optical line terminal, Optical Distribution Network and corresponding optical network unit, regularly receive feedback information successively from the fault location platform.
The fault location platform, the registration service bag that EPON distributed intelligence, timing length and the described fault location platform that is used for storing based on described fault location platform receives is determined the fiber failure position; Show the EPON distribution map, and in the EPON distribution map, show the optical fiber abort situation with type of alarm; According to the passive optical network equipment information of described fault location platform storage, generate and store, show logic analysis table, optical network unit state table, the optical line terminal state table of EPON; Also be used for registration service bag, by transmitting the optical network unit of net, optical line terminal, Optical Distribution Network and optical fiber monitor terminal correspondence, regularly send feedback information successively to the optical fiber monitor terminal according to described fault location platform reception.
In sum, in the fiber failure detection system of the present invention, under the situation of each equipment operate as normal of EPON, when surpassing timing length, if the fault location platform is received the registration service bag that a part of optical fiber monitor terminal sends, do not receive the registration service bag that remaining another part optical fiber monitor terminal sends, then the main fiber line status is normal, each minute optical fiber line status of a part of optical fiber monitor terminal correspondence that the registration service bag can be sent to the fault location platform is normal, the registration service bag can't be sent to each minute optical fiber line status fault of a part of optical fiber monitor terminal correspondence of fault location platform; When surpassing timing length, if the fault location platform is not received the registration service bag that any one optical fiber monitor terminal sends, then main fiber line status fault.This shows that the present invention detects the main fiber line status in real time and divides the optical fiber line status under the situation that does not influence passive optical network service.In addition, because the present invention shows the EPON distribution map in the map mode, and shows abort situation with type of alarm in the EPON distribution map, so the present invention has higher intuitive.
Description of drawings
Fig. 1 is the composition structural representation of fiber failure detection system of the present invention.
Fig. 2 is second kind of composition structural representation of fault location platform of the present invention.
Fig. 3 forms structural representation for the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the composition structural representation of fiber failure detection system of the present invention.As shown in Figure 1, fiber failure detection system of the present invention comprises n optical fiber monitor terminal 11～1n, n optical network unit 22～2n, Optical Distribution Network 3, optical line terminal 4, fault location platform 5; Wherein, n optical fiber monitor terminal 11～1n is corresponding one by one with n optical network unit 22～2n, optical network unit 22～2n that optical fiber monitor terminal 11～1n is corresponding with it is connected, optical network unit 22～2n is connected to Optical Distribution Network 3 by minute optical fiber, Optical Distribution Network 3 is connected to optical line terminal 4 by main fiber, and optical line terminal 4 is connected to fault location platform 5 by transmitting net; Wherein, n is a natural number,
Optical fiber monitor terminal 11～1n is used for successively by corresponding optical network unit 22～2n, Optical Distribution Network 3, optical line terminal 4 and transmission net, regularly to fault location platform 5 transmission registration service bags; By transmitting the optical network unit 22～2n of net, optical line terminal 4, Optical Distribution Network 3 and optical fiber monitor terminal 11～1n correspondence, regularly receive feedback information successively from fault location platform 5.
In the practical application, optical fiber monitor terminal 11～1n is connected to corresponding network element 22～2n by the RJ45 interface.
Fault location platform 5 is used for the registration service bag that EPON distributed intelligence, timing length and described fault location platform 5 based on described fault location platform 5 storages receive, and determines the fiber failure position; Show the EPON distribution map, and in the EPON distribution map, show the optical fiber abort situation with type of alarm; According to the passive optical network equipment information of described fault location platform 5 storages, generate and store, show logic analysis table, optical network unit state table, the optical line terminal state table of EPON; Also be used for registration service bag, successively by transmitting net, optical line terminal 4, Optical Distribution Network 3 and corresponding optical network unit 22～2n, regularly to optical fiber monitor terminal 11～1n transmission feedback information according to described fault location platform 5 receptions.
In the practical application, can be according to actual needs, the concrete timing length of n optical fiber monitor terminal 11～1n transmission registration service bag, the timing length that fault location platform 5 sends feedback informations set, such as, the timing length that optical fiber monitor terminal 11～1n sends the registration service bag is 30s.
In the practical application, the business in registration service bag, feedback information and the EPON can be transmitted in EPON simultaneously, and is independent of each other.
In the practical application, show that the EPON distribution map is for to show in the map mode.
In a word, in the fiber failure detection system of the present invention, each optical fiber monitor terminal by its corresponding optical network unit, Optical Distribution Network, optical line terminal and transmission net, regularly sends the registration service bag to the fault location platform successively; When surpassing timing length, the fault location platform is received the registration service bag that a part of optical fiber monitor terminal sends, do not receive the registration service bag that remaining another part optical fiber monitor terminal sends, under the situation of each equipment operate as normal of EPON, show: the main fiber line status is normal, each minute optical fiber line status of a part of optical fiber monitor terminal correspondence that the registration service bag can be sent to the fault location platform is normal, the registration service bag can't be sent to each minute optical fiber line status fault of a part of optical fiber monitor terminal correspondence of fault location platform; When surpassing timing length, the fault location platform is not received the registration service bag that any one optical fiber monitor terminal sends, and shows: main fiber line status fault.The present invention can detect the main fiber line status and divide the optical fiber line status under the situation that does not influence passive optical network service in real time.In addition, because the present invention shows the EPON distribution map in the map mode, and shows abort situation with type of alarm in the EPON distribution map, so the present invention has higher intuitive.
In the practical application, fault location platform 5 comprises server, is used for the registration service bag that EPON distributed intelligence, timing length and described fault location platform 5 based on described server stores receive, and determines the fiber failure position; Show the EPON distribution map, and in the EPON distribution map, show the optical fiber abort situation with type of alarm; According to the passive optical network equipment information of described server stores, generate and store, show logic analysis table, optical network unit state table, the optical line terminal state table of EPON; Also be used for registration service bag, successively by transmitting net, optical line terminal 4, Optical Distribution Network 3 and corresponding optical network unit 22～2n, regularly to optical fiber monitor terminal 11～1n transmission feedback information according to described fault location platform 5 receptions.
Fig. 2 is second kind of composition structural representation of fault location platform of the present invention.As shown in Figure 2, fault location platform 5 comprises server 51 and the client 52 that is connected to server; Wherein,
Server 51, be used for the registration service bag that EPON distributed intelligence, timing length, passive optical network equipment information, described fault location platform 5 according to server 51 storages receive, determine and the storing fiber optic abort situation, generate and store logic analysis table, optical network unit state table, the optical line terminal state table of EPON; According to the information extraction instruction that client 52 sends, send logic analysis table, optical network unit state table, the optical line terminal state table of EPON distributed intelligence, fiber failure position and EPON to client 52; Also be used for registration service bag, successively by transmitting net, optical line terminal 4, Optical Distribution Network 3 and corresponding optical network unit 22～2n, regularly to optical fiber monitor terminal 11～1n echo reply information according to described fault location platform 5 receptions;
Client 52, be used for sending the information extraction instruction to server 51, EPON distributed intelligence, fiber failure position according to server 51 sends show the EPON distribution map, and show the optical fiber abort situation with type of alarm in the EPON distribution map; Logic analysis table, optical network unit state table, the optical line terminal state table of the EPON that display server 51 sends.
In the practical application, the frame format of registration service bag is as follows:
| Start bit | MAC Address | Length | Subset ID | Type | Command code | Data | Verification and |
The frame format of feedback information is as follows:
In the practical application, the logic analysis table comprises device numbering, equipment working state, line status.
Embodiment
In the practical application, optical line terminal OLT can connect 128 optical network unit ONU by including the Optical Distribution Network of one-level optical splitter, secondary optical splitter or three grades of optical splitters etc., optical line terminal state table, optical network unit state table see Table 1 respectively, table 2, and be as follows:
Table 1 optical line terminal state table
| 1 | 2 | 3 |
| 4 | 5 | 6 |
| … | … | … |
| 126 | 127 | 128 |
Table 2 optical network unit state table
| 1 | 0 | 0 |
| 1 | 1 | 1 |
| … | … | … |
| 1 | 1 | 0 |
Wherein, the numeral 1～128 in the optical line terminal state table represents to be connected to the sequence number of 128 optical network unit ON numbering U of optical line terminal OLT respectively; In the optical network unit state table, numeral " 1 " expression optical network unit is opened with the communication between the user who is connected this network element, and operational excellence; Digital " 0 " represents that optical network unit do not open communication terminal with the communication between the user who is connected this network element.Here, the user is computer, TV or phone of being connected to optical network unit or the like.
Fig. 3 forms structural representation for the embodiment of the invention.The part passive light networking distributed architecture in a certain area as shown in Figure 3, two optical network unit ONU are connected to optical line terminal OLT by first one-level optical splitter, three optical network unit ONU are connected to optical line terminal OLT by second one-level optical splitter.
According to the transport process of registration service bag in the fiber failure detection system of the present invention, determine the main fiber line status, divide the optical fiber line status.In the present embodiment, among Fig. 3, from left to right, 5 optical network unit ONU are set are followed successively by ONU-1～ONU-5, the logic analysis table 3 of EPON, as follows:
Table 3 logic analysis table
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a fiber failure detection system comprises n optical network unit, Optical Distribution Network, optical line terminal, it is characterized in that, described fiber failure detection system also comprises n optical fiber monitor terminal, fault location platform; Wherein, n optical fiber monitor terminal is corresponding one by one with n optical network unit, the optical network unit that the optical fiber monitor terminal is corresponding with it is connected, optical network unit is connected to Optical Distribution Network by minute optical fiber, Optical Distribution Network is connected to optical line terminal by main fiber, and optical line terminal is connected to the fault location platform by transmitting net; Wherein, n is a natural number,
The optical fiber monitor terminal is used for successively by corresponding optical network unit, Optical Distribution Network, optical line terminal and transmission net, regularly to fault location platform transmission registration service bag; By transmitting net, optical line terminal, Optical Distribution Network and corresponding optical network unit, regularly receive feedback information successively from the fault location platform;
The fault location platform, the registration service bag that EPON distributed intelligence, timing length and the described fault location platform that is used for storing based on described fault location platform receives is determined the fiber failure position; Show the EPON distribution map, and in the EPON distribution map, show the optical fiber abort situation with type of alarm; According to the passive optical network equipment information of described fault location platform storage, generate and store, show logic analysis table, optical network unit state table, the optical line terminal state table of EPON; Also be used for registration service bag, by transmitting the optical network unit of net, optical line terminal, Optical Distribution Network and optical fiber monitor terminal correspondence, regularly send feedback information successively to the optical fiber monitor terminal according to described fault location platform reception.
2. fiber failure detection system according to claim 1, it is characterized in that, described fault location platform 5 comprises server, be used for the registration service bag that EPON distributed intelligence, timing length and described fault location platform 5 based on described server stores receive, determine the fiber failure position; Show the EPON distribution map, and in the EPON distribution map, show the optical fiber abort situation with type of alarm; According to the passive optical network equipment information of described server stores, generate and store, show logic analysis table, optical network unit state table, the optical line terminal state table of EPON; Also be used for registration service bag according to described fault location platform 5 receptions, by transmitting net, described optical line terminal 4, described Optical Distribution Network 3 and corresponding described optical network unit 22～2n, regularly send feedback information successively to described optical fiber monitor terminal 11～1n.
3. fiber failure detection system according to claim 1 is characterized in that, described fault location platform 5 comprises server and is connected to the client of server; Wherein,
Server, be used for the registration service bag that EPON distributed intelligence, timing length, passive optical network equipment information, described fault location platform 5 according to described server stores receive, determine and the storing fiber optic abort situation, generate and store logic analysis table, optical network unit state table, the optical line terminal state table of EPON; According to the information extraction instruction that client sends, send logic analysis table, optical network unit state table, the optical line terminal state table of EPON distributed intelligence, fiber failure position and EPON to client; Also be used for registration service bag according to described fault location platform 5 receptions, successively by transmitting net, described optical line terminal 4, described Optical Distribution Network 3 and corresponding described optical network unit 22～2n, regularly to described optical fiber monitor terminal 11～1n echo reply information;
Client is used for sending the information extraction instruction to server, and EPON distributed intelligence, fiber failure position according to server sends show the EPON distribution map, and show the optical fiber abort situation with type of alarm in the EPON distribution map; Logic analysis table, optical network unit state table, the optical line terminal state table of the EPON that display server sends.
4. fiber failure detection system according to claim 1 is characterized in that, described optical fiber monitor terminal 11～1n is connected to corresponding described network element 22～2n by the RJ45 interface.
5. according to claim 1,2 or 3 described fiber failure detection systems, it is characterized in that the frame format of described registration service bag is as follows:
The frame format of described feedback information is as follows:
6. according to claim 1,2 or 3 described fiber failure detection systems, it is characterized in that the logic analysis table comprises device numbering, equipment working state, line status.
7. according to claim 1,2 or 3 described fiber failure detection systems, it is characterized in that described demonstration EPON distribution map is for to show in the map mode.
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| CN105227229A (en) * | 2015-10-26 | 2016-01-06 | 毛茂军 | A kind of optical fibre damage detection and location system |
| WO2016062109A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Fault category determination method and apparatus in passive optical network (pon) |
| CN106656345A (en) * | 2016-08-30 | 2017-05-10 | 南京杰德科技有限公司 | Optical signal transmission and analysis method |
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| CN111861191A (en) * | 2020-07-16 | 2020-10-30 | 云南电力技术有限责任公司 | Evaluation system and method for feeder automation field test technology |
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| CN105227229A (en) * | 2015-10-26 | 2016-01-06 | 毛茂军 | A kind of optical fibre damage detection and location system |
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| CN111861191A (en) * | 2020-07-16 | 2020-10-30 | 云南电力技术有限责任公司 | Evaluation system and method for feeder automation field test technology |
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