CN102386971A - Method and device for detecting fault of optical fiber - Google Patents
Method and device for detecting fault of optical fiber Download PDFInfo
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- CN102386971A CN102386971A CN2011103238395A CN201110323839A CN102386971A CN 102386971 A CN102386971 A CN 102386971A CN 2011103238395 A CN2011103238395 A CN 2011103238395A CN 201110323839 A CN201110323839 A CN 201110323839A CN 102386971 A CN102386971 A CN 102386971A
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Abstract
The invention discloses a method and device for detecting a fault of an optical fiber. The method comprises the following steps: a network element EMS (element management system) sends an optical fiber fault detection request to a corresponding optical line terminal (OLT); the OLT starts an optical module of the OLT after receiving the optical fiber fault detection request, the optical module sends an OTDR ( optical time domain reflector) detection signal to an optical fiber and receives an OTDR reflection signal returned by the optical fiber; the optical module processes the OTDR reflection signal to obtain OTDR data; and the OLT transmits the OTDR data and/or a test report generated by carrying out secondary processing on the OTDR data to the EMS. In the invention, the optical module with built-in OTDR function is inserted into the optical line terminal, thus the optical line terminal has the functions of carrying out optical path detection and processing on an optical network.
Description
Technical field
The present invention relates to optical-fibre communications field, the particularly a kind of optical line terminal detection fiber fault of passive optical network of built-in fiber measuring ability optical module and the method and device of incident of using.
Background technology
Along with fast development and the cost degradation and the requirements of green environmental protection of Fibre Optical Communication Technology, to Access Network, all use optical fiber to form network has become basic Consensus to communication network from core net, metropolitan area network.
The laying of a large amount of fiber optic networks and settle after, the operation of network and safeguarding has become one of problem that operator pays close attention to most, the particularly detection of passive optical network optical fiber circuit and fault location in the Access Network.
Fig. 1 is the structural representation of the fiber fault of passive optical network detection system that provides of prior art; As shown in Figure 1; Mainly comprise network element (EMS, Element Management System), optical line terminal (OLT, optical line terminal), wave multiplexer, optical network unit (ONU; Optical Network Unit), light time territory detector (OTDR, Optical Time Domain Reflector) and OTDR server.
As shown in Figure 1, detection fiber line fault mainly is offline mode in the EPON, promptly outside OLT, settles an OTDR, and OTDR detects OTDR photosyntheticly to go into trunk optical fiber and detect through wave multiplexer.Because the equipment of OTDR is relatively more expensive, it is also not too convenient to operate, and patch also has certain influence to business at every turn.If not direct grafting, then need connect an optical switch, increase equipment cost, so operator's O&M cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of method and device of detection fiber fault, inconvenient operation in the time of solving the OTDR detection failure better, patch business is existed certain influence and OTDR apparatus expensive, operator's O&M cost problem of higher at every turn.
According to an aspect of the present invention, a kind of method of detection fiber fault is provided, has may further comprise the steps:
Network element EMS sends fiber failure to corresponding optical line terminal OLT and detects request;
Said OLT starts its optical module after receiving said fiber failure detection request, and said optical module sends the OTDR detection signal and receives the OTDR reflected signal that optical fiber returns to optical fiber;
Said optical module is handled said OTDR reflected signal and is obtained the OTDR data;
Said OLT is with said OTDR data and/or said OTDR data are carried out the test report that aftertreatment generates send to EMS.
Wherein, said optical module emission OTDR detection signal and the step that receives the OTDR reflected signal comprise:
The EMS interface module of said OLT is sent test command to the OTDR of said optical module fiber detection module after receiving said fiber failure detection request;
After said OTDR fiber detection module receives said test command, send the OTDR detection signal to optical fiber;
Said OTDR fiber detection module receives the OTDR reflected signal that said optical fiber returns.
Wherein, said optical module is handled the step that the OTDR reflected signal obtains the OTDR data and is comprised:
Said OTDR fiber detection module is handled said OTDR reflected signal, obtains the OTDR data that said OTDR reflected signal light intensity changes along with fiber distance.
The method of detection fiber fault of the present invention also comprises:
Said EMS is to said OTDR data or said test report is analyzed and evaluation obtains the analyzing evaluation result; If EMS is satisfied to said analyzing evaluation result; Then send the order that finishes test to said OLT, otherwise, test again or the further order of test sent to said OLT.
According to a further aspect in the invention, a kind of device of detection fiber fault is provided, has comprised:
The EMS interface module is used for detecting the request back at the fiber failure that receives the EMS transmission and sends the OTDR test command to optical module;
Optical module is used for after receiving said OTDR test command, sending the OTDR detection signal and receiving the OTDR reflected signal that said optical fiber returns to optical fiber, then said OTDR reflected signal is carried out data processing and obtains the OTDR data.
The device of detection fiber fault of the present invention comprises that also optical fiber detects processing module, is used for that said OTDR data are carried out aftertreatment and generates test report, and said OTDR data or said test report are sent to EMS through said EMS interface module.
Wherein, said EMS interface module is used for that also said OTDR data are carried out aftertreatment and generates test report, and said OTDR data or said test report are sent to EMS.
Wherein, said optical fiber detection processing module comprises:
Preparation module is used to begin the software and hardware preparation that OTDR detects;
Data processing and transmission module are used for said OTDR data are handled the generation test report and said test report or said OTDR data are sent to EMS.
Wherein, said optical fiber detects processing module and also comprises closing module, is used to notify said optical module to close the relevant software and hardware of said detection and recovers the regular traffic function.
Wherein, said optical module comprises the OTDR fiber detection module, is used for sending OTDR detection signal and reception and handling the OTDR reflected signal that optical fiber returns to optical fiber obtaining the OTDR data.
Wherein, said OTDR fiber detection module comprises:
The test transmitter module is used for sending the OTDR detection signal to optical fiber;
The reflectance data receiver module is used to receive the OTDR reflected signal that said optical fiber returns;
Data preprocessing module is used to handle said OTDR reflected signal and obtains the OTDR data;
Control module is used to control said test transmitter module, said reflectance data receiver module and said data preprocessing module.
Compared with prior art, beneficial effect of the present invention is: one, detection fiber line fault easy to operate, reduce to minimum to the interference of existing business simultaneously; Two, do not need expensive OTDR during detection fiber line fault, reduced the O&M cost of operator.
Description of drawings
Fig. 1 is the structural representation of the fiber fault of passive optical network detection system that provides of prior art;
The schematic diagram of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 2 is that the embodiment of the invention one provides;
The particular flow sheet of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 3 is that the embodiment of the invention one provides;
Fig. 3 a is the EMS that provides of the embodiment of the invention one and the most basic data passes flow chart between the OLT;
The particular flow sheet of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 4 is that the embodiment of the invention two provides;
Fig. 5 is the particular flow sheet of method of the optical line terminal detection fiber fault of a kind of built-in OTDR of providing of the embodiment of the invention three;
Fig. 6 is the structural representation of system of the optical line terminal detection fiber fault of a kind of built-in OTDR of providing of the embodiment of the invention one;
Fig. 7 is the structural representation that a kind of optical fiber that the embodiment of the invention one provides detects processing module;
Fig. 8 is the structural representation that other a kind of optical fiber that the embodiment of the invention one provides detects processing module;
Fig. 9 is the structural representation of the OTDR fiber detection module that provides of the embodiment of the invention one;
Figure 10 is a kind of device with detection fiber fault of built-in OTDR function optical module that the embodiment of the invention three provides;
Figure 10 a is the structural representation of the EMS interface module that provides of the embodiment of the invention three
Embodiment
, should be appreciated that following illustrated preferred embodiment only is used for explanation and explains the present invention, and be not used in qualification the present invention a preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing.
The schematic diagram of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 2 is that the embodiment of the invention one provides, as shown in Figure 2, said method comprising the steps of:
Step S201, EMS sends fiber failure to corresponding OLT and detects request.
Step S202, said OLT start its optical module after receiving said fiber failure detection request, and said optical module sends the OTDR detection signal and receives the OTDR reflected signal that optical fiber returns to optical fiber.
After said OLT receives said fiber failure detection request; Send instruction through business module to optical module; Optical module starts the program that optical fiber detects according to instruction, receives the OTDR reflected signal that optical fiber returns by detecting optical transmitting set to optical fiber emission OTDR detection signal and through optical receiver.
Step S203, said optical module handle said OTDR reflected signal and obtain the OTDR data.
Step S204, said OLT are with said OTDR data or said OTDR data are carried out the test report that aftertreatment generates send to EMS.
Said OLT directly sends to EMS with the OTDR data, perhaps said OTDR data is analyzed the back and forms test report, more said test report and OTDR data is sent to said EMS.
The particular flow sheet of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 3 is that the embodiment of the invention one provides.In order to increase the new function that optical fiber detects, OLT needs to increase the requirement that three functional modules reach the OTDR function except original business function, and said three functional modules are that EMS interface module, optical fiber detect processing module, OTDR fiber detection module.Wherein, it is a sub-module of the business module of OLT that optical fiber detects processing module, comprises preparation module, closing module, data processing and transmission module; The OTDR fiber detection module is a sub-module of the optical module of OLT, comprises control module, test transmitter module, reflection receiver module, data preprocessing module.As shown in Figure 3, said method comprising the steps of:
Step S301, EMS sends fiber failure to corresponding OLT and detects request;
EMS sends fiber failure detection request according to oneself requirement or external demand to corresponding OLT.
Step S302, the EMS data interface module detects processing module to optical fiber and sends the OTDR sense command;
The EMS data interface module detects processing module to optical fiber and sends the OTDR sense command after receiving the fiber failure detection request of EMS transmission, notice optical fiber detection processing module startup OTDR test preparation.
Step S303, optical fiber detects processing module and sends test command to optical module;
After optical module receives the OTDR sense command; The preparation module of its OTDR fiber detection module is carried out a series of OTDR test initialization and is prepared; Send like optical module and to open the relevant testing equipment or the order of module, or optical-fiber network windowed handle or the like to band OTDR function.After preparation finishes, send test command to control module.
Step S304, the OTDR fiber detection module sends the OTDR detection signal;
After control module in the OTDR fiber detection module is received said test command, send test command, start the test of OTDR, as opening the coherent detection device, sending OTDR detection signal such as test pulse to the test transmitter module.
Step S305, OTDR fiber detection module receive and handle the OTDR reflected signal and obtain the OTDR data and send to optical fiber detecting processing module;
After optical fiber receives the OTDR detection signal, begin to reflect the OTDR detection signal.The receiver module of the OTDR fiber detection module in the optical module begins to receive the OTDR reflected signal according to the requirement of control module, the log-on data acquisition function.Because the OTDR reflected signal is too weak or method of testing is different, test and the process need repeated multiple times of gathering.After test and collection finish; The data preprocessing module of OTDR fiber detection module according to method of testing to the preliminary treatment of being correlated with of the corresponding data of OTDR reflected signal; Drawing the OTDR light intensity that transmits at last is the OTDR data with data flow or the curve chart that the work fiber distance changes, and the requirement according to control module detects processing module to this OTDR transfer of data to optical fiber then.
Step S306, optical fiber detection processing module sends to the EMS interface module with the test report of OTDR data or the generation of OTDR data;
After optical fiber detection processing module receives the OTDR data; Its data passes and processing module directly send to the EMS interface module with the OTDR data; Perhaps; Reason and fault point that this data analysis is drawn fiber failure, and its packing and conversion are generated test report feed back to the EMS interface module.
Step S307, the EMS interface module sends to EMS with OTDR data or test report;
The EMS interface module is given EMS the test report of associated fiber failure cause and fault point or OTDR transfer of data.
Step S308, EMS analyzes and evaluates test report and/or OTDR data.
After EMS receives OTDR data or test report, carry out dependent evaluation,, then send the order that finishes test, after the EMS interface module is received order, detect processing module to optical fiber and send the order of closing test to OLT if satisfied to OTDR data or test report.Optical fiber detects the closing module of processing module and sends the order of closing relevant testing equipment, recovering the regular traffic state to the control module of OTDR fiber detection module, and control module is sent dependent instruction to test transmitter module and reflection receiver module.The test transmitter module is finished with the reflection receiver module, and this instruction is back sends the completed signal of task to closing module.Closing module begins to carry out closing flow path, close end back optical fiber detection processing module and send the information that completion is closed to the EMS interface module, and the EMS interface module is given EMS with this feedback information; If EMS is dissatisfied to test report, then execution in step S301 to the order that OLT sends further test, to carry out DCO detailed checkout (as measuring accuracy is changed into 3 meters from 10 meters), perhaps sends the order of test again to OLT.
Fig. 3 a is the EMS that provides of the embodiment of the invention one and the most basic data passes flow chart between the OLT, and shown in Fig. 3 a, EMS sends the order that starts test; OLT replys the relevant report of test; Send the order of closing test after the EMS assessment, OLT sends the answer that is finished after accomplishing.
The particular flow sheet of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 4 is that the embodiment of the invention two provides.OLT comprises that EMS interface module, optical fiber detect processing module, OTDR fiber detection module.Wherein, the OTDR fiber detection module comprises control module, test transmitter module, reflection receiver module, data preprocessing module.The optical fiber that different with embodiment one is in the OLT business module detects processing module has increased a new module: data analysis module; Be that optical fiber detection processing module not only comprises preparation module, closing module, data processing and transmission module, also comprise data analysis module.
The data analysis module major function is that the OTDR data are carried out aftertreatment.After optical fiber detects processing module and receives the OTDR data, wherein data analysis module will be analyzed the OTDR data, put out fault point or abnormity point in order and generate analysis result.Data processing is handled the generation test report with the transmission module to the OTDR data, and also generating test report together issues the EMS data interface module with said test report, analysis result and OTDR data then, and then is transmitted to EMS.After having increased data analysis module, significantly reduce the workload of EMS, improved operating efficiency.
As shown in Figure 4, the method that embodiment two provides may further comprise the steps:
Step S401, EMS sends fiber failure to corresponding OLT and detects request;
EMS sends fiber failure detection request according to oneself requirement or external demand to corresponding OLT.
Step S402, the EMS data interface module detects processing module to optical fiber and sends the OTDR sense command;
The EMS data interface module detects processing module to optical fiber and sends the OTDR sense command after receiving the fiber failure detection request of EMS transmission, notice optical fiber detection processing module startup OTDR test preparation.
Step S403, optical fiber detects processing module and sends test command to the OTDR fiber detection module;
After optical fiber detection processing module receives the OTDR sense command; Its preparation module is carried out a series of OTDR test initialization and is prepared; Send like optical module and to open the relevant testing equipment or the order of module, or optical-fiber network windowed handle or the like to band OTDR fiber detection module.After preparation finished, the OTDR fiber detection module in optical module sent test command.
Step S404, the OTDR fiber detection module sends the OTDR detection signal;
After control module in the OTDR fiber detection module is received said test command, send test command to the test transmitter module, the test transmitter module starts the test of OTDR, as sends OTDR detection signal such as test pulse.
Step S405, OTDR fiber detection module receive and handle the OTDR reflected signal and obtain the OTDR data and send to optical fiber detecting processing module;
After optical fiber receives the OTDR detection signal, reflect corresponding OTDR reflected signal.The reflection receiver module of OTDR fiber detection module begins to receive the OTDR reflected signal according to the requirement of control module, the log-on data acquisition function.Because the OTDR reflected signal is too weak or method of testing is different, test and the process need repeated multiple times of gathering, general thousands of times to up to ten thousand times.
After test and collection finish; Data preprocessing module, draws transmit data flow that light intensity changes with the work fiber distance or curve chart of OTDR at last and is the OTDR data and the OTDR data are sent to optical fiber detection processing module the preliminary treatment of be correlated with of the corresponding data of OTDR reflected signal according to method of testing.
Step S406 carries out analyzing and processing to the OTDR data and generates test report and send it to the EMS interface module.
Optical fiber detects the data processing of processing module to carry out the packing of interface data and changes generating test result to these OTDR data with the transmission module; The data analysis module that optical fiber detects processing module averages the OTDR data or relevant processing, abnormity point and fault point is listed with the form of form drawn analysis result.Last optical fiber detects processing module also accomplish test report to the test result that OTDR data, analysis result, test result convert to together, and test report is issued the EMS interface module.
Step S407, the EMS interface module sends to EMS with test report;
Step S408, EMS analyzes and evaluates test report.
The particular flow sheet of the method for a kind of optical line terminal detection fiber fault with built-in OTDR function that Fig. 5 is that the embodiment of the invention three provides.OLT has increased the EMS interface module newly, and in optical module, has increased the OTDR fiber detection module newly.Different with embodiment one and embodiment two is that newly-increased optical fiber detects processing module in the OLT business module, and embodiment one has the EMS interface module to accomplish with the function that optical fiber among the embodiment two detects processing module fully.
As shown in Figure 5, the method that embodiment three provides may further comprise the steps:
Step S501, EMS sends fiber failure to corresponding OLT and detects request;
Step S502, the EMS data interface module is assigned the instruction that fiber failure detects to optical module;
After the EMS data interface module receives the instruction that fiber failure that EMS assigns detects, this instruction issuing to optical module with OTDR function.
Step S503, optical module carry out fiber failure and detect generation OTDR data.
After optical module received fiber failure detection instruction, the fiber failure that the OTDR fiber detection module of optical module begins OTDR detected.As: open relevant checkout equipment, the emitting detection signal receives the fiber reflection signal, generates the OTDR data to receiving that reflected signal is handled at last.
Step S504, optical module sends the OTDR data to the EMS interface module.
Step S505, the EMS interface module sends to EMS with the OTDR data.
Step S506, EMS analyzes and evaluates the OTDR data
The structural representation of the system of a kind of optical line terminal detection fiber fault with built-in OTDR function optical module that Fig. 6 is that the embodiment of the invention one provides; As shown in Figure 6; Said system comprises: EMS and the device with detection fiber fault of built-in OTDR function optical module, i.e. optical line terminal.
EMS is used to send fiber failure and detects request and receive the OTDR data of returning.EMS sends fiber failure detection request according to oneself requirement or external demand to the optical line terminal that has built-in OTDR function optical module accordingly.The device of the optical line terminal detection fiber fault of built-in OTDR detects request according to fiber failure optical fiber is detected, and generates the OTDR data and returns to EMS.
Device with detection fiber fault of built-in OTDR function optical module is used for the detection fiber fault and generates the OTDR data.As shown in Figure 6, the device with detection fiber fault of built-in OTDR function optical module is that OLT comprises that EMS interface module, optical fiber detect processing module, OTDR fiber detection module.
The major function of EMS interface module is the contact of being responsible between OLT and the EMS about the OTDR matters; Promptly accept dependent instruction that EMS issues and detect processing module to the optical fiber that it passes to OLT, and the OTDR data that generate OLT or the state of command execution are passed to EMS.Because OLT already has the interactive interface with EMS, therefore this new function can be in original interface module business, to increase a kind of new business model, therefore can realize this function through software.
The major function that optical fiber detects processing module is the order of execution EMS interface module and receives corresponding OTDR test data and pass to the EMS interface module to it.
Fig. 7 is the structural representation that a kind of optical fiber that the embodiment of the invention one provides detects processing module, and shown in Fig. 7 μ, optical fiber detects processing module and comprises preparation module, closing module, data processing and transmission module.
The major function of preparation module is to carry out the preparation of various software and hardwares for the detection of OTDR.As: send the hardware device of opening the corresponding test of OTDR to optical module, also need window sometimes creates conditions or the like for test; Preparation module is a software module, and OLT is as long as updating software release is promptly renewable.
The major function of closing module is to send the hardware device of closing the corresponding test of OTDR to optical module, and corresponding software, recovers the regular traffic function.The function of closing module can be a kind of software module, and OLT is as long as updating software release is promptly renewable.
Need to prove that when optical module adopted three-wavelength to test, its test process did not influence business, above-mentioned closing module can not used or not be provided with to optical fiber detection this moment processing module.
Data processing and transmission module functions are put the OTDR data result that optical module passes in order the generation test result by data format between OLT and the EMS; And test result and OTDR data be merged into test report, issue EMS through the EMS interface module.
Fig. 8 is the structural representation that other a kind of optical fiber that the embodiment of the invention one provides detects processing module, and as shown in Figure 8, optical fiber detects processing module except comprising preparation module, closing module, data processing and transmission module, also comprises data analysis module.Wherein, the same among the function of preparation module, closing module and Fig. 7 repeated no more here.Data analysis module is used for the OTDR data are averaged or relevant processing, abnormity point and fault point is listed with the form of form drawn analysis result.Test result, analysis result, OTDR data that the OTDR data transaction that data processing and transmission module pass over optical module becomes are put in order by data format between OLT and the EMS, are write as relevant test report, issue EMS through the EMS interface module.
Fig. 9 is the structural representation of the OTDR fiber detection module that provides of the embodiment of the invention one, and is as shown in Figure 9, comprises test transmitter module, reflection receiver module, data preprocessing module, control module.The OTDR fiber detection module is a sub-module that has in the optical module of OTDR function, and its major function is to accomplish OTDR test, the once pretreated process of data acquisition and data.The all functions of OTDR fiber detection module are all in an optical module.
When control module is mainly carried out orderly arrangement to the process of test, as when opening or close testing equipment, when begins emissioning testing signal, image data and when carry out data processing or the like.This module is a hardware module, can be made up of related chip.
The major function of test transmitter module is an emission OTDR detection signal.It opens or closes testing equipment according to the requirement of control module, launches the OTDR detection signal according to the indication of control module then.The test transmitter module can be that software also can be hardware, if software then adds a modulation signal by a small margin on original transmitting, if hardware then increases a reflector separately, launches the OTDR detection signal specially.
The major function of reflection receiver module receives the OTDR reflected signal, and passes to data preprocessing module to related data.It mainly according to control module require the On/Off relevant device, according to control module reflected signal is received then, and passes to data preprocessing module to related data.This module can be reused original optical receiver, and also can increase a new receiver and receive the reflection analog signal specially, so this module can be software, also can be hardware.
The major function of data preprocessing module is that the data that collect are carried out relevant treatment, carries out statistical average like the data that the optical fiber that obtains of test is repeatedly fed back and handles to reduce the influence of noise to it; To multiple-pulse Gray sequential test signal, get its signal etc. according to its orthogonal property.This is that the OTDR data are carried out the result that a preliminary treatment obtains in a word, obtains data flow or curve chart that fiber data changes with fiber distance.Because the data preliminary treatment need be carried out great amount of calculation to data, therefore general selection dsp chip is accomplished this function, and it can synthesize a chip with control module, so this is a hardware module.
Figure 10 is a kind of device with detection fiber fault of built-in OTDR function optical module that the embodiment of the invention three provides; Wherein this device is that OLT mainly comprises two modules; One is the EMS interface module that links to each other with EMS, and another is the optical module with OTDR function.
The interface module of EMS; Its major function is to receive the order that fiber failure that EMS assigns detects; Simultaneously it this instruction issuing to optical module with OTDR function; Its receives the OTDR data that optical module transmits then, can carry out analyzing and processing or does not handle it, forms test report then or directly sends EMS to.Figure 10 a is the structural representation of EMS interface module; Shown in Figure 10 a, the EMS interface module comprises two modules, and one is order reception and instruction issuing module; It mainly is to receive the EMS order and assign dependent instruction; Another one is a data processing and transmit module, and it mainly is to the OTDR data that receive, and handles or the transparent EMS that passes to.
Optical module with OTDR function, its major function are the instructions according to the EMS interface module, and the fiber failure of beginning OTDR detects.Optical module comprises the OTDR fiber detection module; The OTDR fiber detection module is opened relevant checkout equipment, and the launching fiber detection signal receives the fiber reflection signal; At last the fiber reflection signal of receiving is handled and generated the OTDR data; And send said OTDR data the interface module of EMS to, if EMS is satisfied relevant result, will close the measuring ability of OTDR in the optical module according to the instruction of EMS interface module.
In sum; The present invention is through the optical module in the built-in OTDR function of optical line terminal; Optical line terminal is had optical-fiber network is carried out light path detection and processing capacity; Inconvenient operation when having solved the OTDR detection failure, patch business existed and disturb and OTDR apparatus expensive, operator's O&M cost problem of higher the beneficial effect easy to operate when having the detection fiber fault, low, that O&M cost is low at every turn traffic interference.
Although preceding text specify the present invention, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all are to be understood that to falling into protection scope of the present invention.
Claims (11)
1. the method for a detection fiber fault is characterized in that, said method comprising the steps of:
Network element EMS sends fiber failure to corresponding optical line terminal OLT and detects request;
Said OLT starts its optical module after receiving said fiber failure detection request, and said optical module sends the OTDR detection signal and receives the OTDR reflected signal that optical fiber returns to optical fiber;
Said optical module is handled said OTDR reflected signal and is obtained the OTDR data;
Said OLT is with said OTDR data and/or said OTDR data are carried out the test report that aftertreatment generates send to EMS.
2. method according to claim 1 is characterized in that, said optical module emission OTDR detection signal and the step that receives the OTDR reflected signal comprise:
The EMS interface module of said OLT is sent test command to the OTDR of said optical module fiber detection module after receiving said fiber failure detection request;
After said OTDR fiber detection module receives said test command, send the OTDR detection signal to optical fiber;
Said OTDR fiber detection module receives the OTDR reflected signal that said optical fiber returns.
3. method according to claim 2 is characterized in that, the step that said optical module processing OTDR reflected signal obtains the OTDR data comprises:
Said OTDR fiber detection module is handled said OTDR reflected signal, obtains the OTDR data that said OTDR reflected signal light intensity changes along with fiber distance.
4. according to each described method of claim 1-3, it is characterized in that said method also comprises:
Said EMS is to said OTDR data or said test report is analyzed and evaluation obtains the analyzing evaluation result; If EMS is satisfied to said analyzing evaluation result; Then send the order that finishes test to said OLT, otherwise, test again or the further order of test sent to said OLT.
5. the device of a detection fiber fault is characterized in that, said device comprises:
The EMS interface module is used for detecting the request back at the fiber failure that receives the EMS transmission and sends the OTDR test command to optical module;
Optical module is used for after receiving said OTDR test command, sending the OTDR detection signal and receiving the OTDR reflected signal that said optical fiber returns to optical fiber, then said OTDR reflected signal is carried out data processing and obtains the OTDR data.
6. device according to claim 5 is characterized in that, said device also comprises,
Optical fiber detects processing module, is used for that said OTDR data are carried out aftertreatment and generates test report, and said OTDR data or said test report are sent to EMS through said EMS interface module.
7. device according to claim 5 is characterized in that,
The EMS interface module is used for that also said OTDR data are carried out aftertreatment and generates test report, and said OTDR data or said test report are sent to EMS.
8. device according to claim 6 is characterized in that, said optical fiber detects processing module and comprises:
Preparation module is used to begin the software and hardware preparation that OTDR detects;
Data processing and transmission module are used for said OTDR data are handled the generation test report and said test report or said OTDR data are sent to EMS.
9. device according to claim 8 is characterized in that, said optical fiber detects processing module and also comprises closing module, is used to notify said optical module to close the relevant software and hardware of said detection and recovers the regular traffic function.
10. according to each described device of claim 6-9, it is characterized in that said optical module comprises: the OTDR fiber detection module is used for sending OTDR detection signal and reception and handling the OTDR reflected signal that optical fiber returns to optical fiber obtaining the OTDR data.
11. device according to claim 10, said OTDR fiber detection module comprises:
The test transmitter module is used for sending the OTDR detection signal to optical fiber;
The reflectance data receiver module is used to receive the OTDR reflected signal that said optical fiber returns;
Data preprocessing module is used to handle said OTDR reflected signal and obtains the OTDR data;
Control module is used to control said test transmitter module, said reflectance data receiver module and said data preprocessing module.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222206A (en) * | 2012-10-31 | 2013-07-24 | 华为技术有限公司 | Fault detection method, apparatus and system of branch fiber |
| CN104485992A (en) * | 2014-11-06 | 2015-04-01 | 北京富通亚讯网络信息技术有限公司 | Large-dynamic no-blind zone monitoring system and method |
| CN105099545A (en) * | 2015-07-29 | 2015-11-25 | 清华大学 | Quantum safety communication equipment for self-testing of damage to optical fiber |
| WO2015196638A1 (en) * | 2014-06-27 | 2015-12-30 | 中兴通讯股份有限公司 | Optical fiber detection method, detection device, detection platform and element management system |
| CN105227229A (en) * | 2015-10-26 | 2016-01-06 | 毛茂军 | A kind of optical fibre damage detection and location system |
| CN105447444A (en) * | 2015-11-04 | 2016-03-30 | 中国电子科技集团公司第四十一研究所 | OTDR event analysis algorithm based on difference window and template matching |
| CN105591693A (en) * | 2015-12-16 | 2016-05-18 | 大豪信息技术（威海）有限公司 | Integrated test system and integrated test method for fiber-optic network |
| CN112629820A (en) * | 2019-10-08 | 2021-04-09 | 中国移动通信集团浙江有限公司 | Optical fiber matching test system and method |
| CN117060998A (en) * | 2023-10-11 | 2023-11-14 | 国网山东省电力公司博兴县供电公司 | Automatic fault detection method, device, equipment and medium for power grid communication optical module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070116467A1 (en) * | 2005-11-23 | 2007-05-24 | Samsung Electronics Co.; Ltd | Passive optical network |
| CN101540636A (en) * | 2008-03-20 | 2009-09-23 | 英保达股份有限公司 | Passive fiber network monitoring system and method |
| CN101917226A (en) * | 2010-08-23 | 2010-12-15 | 中兴通讯股份有限公司 | Method and optical line terminal for performing fiber fault diagnosis in passive optical network |
| CN102158280A (en) * | 2011-04-02 | 2011-08-17 | 王健 | Method for modulating and superposing optical time domain reflectometer (OTDR) testing signals in data transmission optical signals and OTDR testing method |
-
2011
- 2011-09-28 CN CN2011103238395A patent/CN102386971A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070116467A1 (en) * | 2005-11-23 | 2007-05-24 | Samsung Electronics Co.; Ltd | Passive optical network |
| CN101540636A (en) * | 2008-03-20 | 2009-09-23 | 英保达股份有限公司 | Passive fiber network monitoring system and method |
| CN101917226A (en) * | 2010-08-23 | 2010-12-15 | 中兴通讯股份有限公司 | Method and optical line terminal for performing fiber fault diagnosis in passive optical network |
| CN102158280A (en) * | 2011-04-02 | 2011-08-17 | 王健 | Method for modulating and superposing optical time domain reflectometer (OTDR) testing signals in data transmission optical signals and OTDR testing method |
Cited By (13)
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| CN103222206B (en) * | 2012-10-31 | 2016-11-02 | 华为技术有限公司 | The fault detection method of branch optical fiber, Apparatus and system |
| WO2014067094A1 (en) * | 2012-10-31 | 2014-05-08 | 华为技术有限公司 | Branch optical fiber fault detection method, device and system |
| CN103222206A (en) * | 2012-10-31 | 2013-07-24 | 华为技术有限公司 | Fault detection method, apparatus and system of branch fiber |
| WO2015196638A1 (en) * | 2014-06-27 | 2015-12-30 | 中兴通讯股份有限公司 | Optical fiber detection method, detection device, detection platform and element management system |
| CN104485992A (en) * | 2014-11-06 | 2015-04-01 | 北京富通亚讯网络信息技术有限公司 | Large-dynamic no-blind zone monitoring system and method |
| CN105099545A (en) * | 2015-07-29 | 2015-11-25 | 清华大学 | Quantum safety communication equipment for self-testing of damage to optical fiber |
| CN105227229A (en) * | 2015-10-26 | 2016-01-06 | 毛茂军 | A kind of optical fibre damage detection and location system |
| CN105447444A (en) * | 2015-11-04 | 2016-03-30 | 中国电子科技集团公司第四十一研究所 | OTDR event analysis algorithm based on difference window and template matching |
| CN105447444B (en) * | 2015-11-04 | 2018-09-25 | 中国电子科技集团公司第四十一研究所 | A kind of OTDR event analysis algorithms based on difference window and template matches |
| CN105591693A (en) * | 2015-12-16 | 2016-05-18 | 大豪信息技术（威海）有限公司 | Integrated test system and integrated test method for fiber-optic network |
| CN112629820A (en) * | 2019-10-08 | 2021-04-09 | 中国移动通信集团浙江有限公司 | Optical fiber matching test system and method |
| CN117060998A (en) * | 2023-10-11 | 2023-11-14 | 国网山东省电力公司博兴县供电公司 | Automatic fault detection method, device, equipment and medium for power grid communication optical module |
| CN117060998B (en) * | 2023-10-11 | 2024-02-02 | 国网山东省电力公司博兴县供电公司 | Automatic fault detection method, device, equipment and medium for power grid communication optical module |
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