CN102811090A - Method and system for roll-call testing of optical fibers - Google Patents
Method and system for roll-call testing of optical fibers Download PDFInfo
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- CN102811090A CN102811090A CN2012102968516A CN201210296851A CN102811090A CN 102811090 A CN102811090 A CN 102811090A CN 2012102968516 A CN2012102968516 A CN 2012102968516A CN 201210296851 A CN201210296851 A CN 201210296851A CN 102811090 A CN102811090 A CN 102811090A
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Abstract
The invention discloses a method and a system for roll-call testing of optical fibers. The method includes: an RTU (remote terminal unit) performs OTDR (optical time-domain reflectometry) testing for an LMC (land mobile channel) designated optical fiber under control of an LMC and sends an OTDR curve obtained by OTDR testing to the LMC; the LMC receives the OTDR curve to perform fault analysis according to the OTDR curve; and the LMC stores fault analysis results. The method and the system are capable of performing fault testing for the designated optical fibers.
Description
Technical field
The present invention relates to power domain, relate in particular to a kind of roll-call method of testing and system of optical fiber.
Background technology
Along with the development of modern electric communications industry, optical cable is widely used in communications.
Though existing communications network has network management, protection such as switches at function,, generally do not support detection to the optical cable characteristic.
When the optical cable in the communications network breaks down, can't confirm the position of breaking down, thereby also can't repair fast the fault optical cable.
Summary of the invention
In view of this, the technical problem that the present invention will solve is, a kind of roll-call method of testing and system of optical fiber is provided, and can carry out fault test to specifying optical fiber.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of roll-call method of testing of optical fiber comprises:
RTU specifies optical fiber and Xining OTDR test to LMC under the control of LMC, the OTDR curve that the OTDR test is obtained sends to LMC;
LMC receives said OTDR curve, carries out accident analysis according to said OTDR curve;
LMC stores the result of said accident analysis.
Said LMC carries out accident analysis according to said curve and comprises:
LMC confirms said appointment optical fiber according to said OTDR curve fault point is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
Also comprise:
Report to the police to the user.
A kind of roll-call test macro of optical fiber comprises:
Transmitting element is used under the control of LMC, LMC being specified optical fiber and Xining OTDR test, and the OTDR curve that the OTDR test is obtained sends to LMC;
Analytic unit is used to receive said OTDR curve, carries out accident analysis according to said OTDR curve;
Memory cell is used to store the result of said accident analysis.
Said analytic unit specifically is used for: receive said OTDR curve, the fault point of confirming said appointment optical fiber according to said OTDR curve is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
Also comprise: alarm unit is used for reporting to the police to the user.
Said transmitting element is arranged among the RTU, and said analytic unit and memory cell are arranged among the LMC.
Technique effect analysis for technique scheme is following:
RTU specifies optical fiber to carry out the OTDR test to LMC under the control of LMC, and the OTDR curve that the OTDR test is obtained sends to LMC; LMC receives said OTDR curve, carries out accident analysis according to said OTDR curve; LMC stores the result of said accident analysis.Thereby realized for the fault test of specifying optical fiber in the network.
Description of drawings
Fig. 1 a is the suitable scene sketch map of the application embodiment;
Fig. 1 is the application's optical fiber roll-call method of testing first embodiment sketch map;
Fig. 2 is the application's optical fiber roll-call method of testing second embodiment sketch map;
Fig. 3 is the application's optical fiber roll-call test macro first embodiment sketch map;
Fig. 4 is the application's optical fiber roll-call test macro second embodiment sketch map.
Embodiment
Specify the realization of the application's embodiment optical fiber roll-call method of testing and system below in conjunction with accompanying drawing.
The scene that the application's optical fiber roll-call method of testing and system is suitable for comprises shown in Fig. 1 a: province monitoring center (PMC), area monitoring center (LMC) and remote-end monitoring system (RTU) etc., wherein, a plurality of LMC are set under the PMC, and under the LMC a plurality of RTU can be set.In addition,, can also corresponding integrated network management system be set, be used for the user Monitoring Data of PMC, LMC or the RTU of correspondence is configured management etc. for PMC, LMC or RTU etc. for ease for the network management of PMC, LMC, RTU etc.
Fig. 1 is the application embodiment optical fiber roll-call method of testing schematic flow sheet, and as shown in Figure 1, this method comprises:
Step 101:RTU specifies optical fiber to carry out the OTDR test to LMC under the control of LMC, and the OTDR curve that the OTDR test is obtained sends to LMC;
Said RTU specifies optical fiber to carry out OTDR to LMC under the control of LMC and tests and can comprise:
When LMC confirms to carry out the fault test of a certain optical fiber, the optical fiber information of sending said optical fiber to the corresponding RTU of this optical fiber; Said optical fiber information comprises at least: the ID of optical fiber;
RTU receives said optical fiber information, and the optical fiber that optical fiber information is indicated carries out the OTDR test.
Wherein, LMC confirms that the fault test of carrying out a certain optical fiber can also can regularly be triggered or the like according to certain one-period by LMC by user's triggering, and concrete triggering does not limit opportunity here.
Optical fiber cable is the dielectric waveguide that transmits light wave.Optical fiber is by a kind of fiber that becomes concentrically ringed double-deck transparent medium to constitute.Optical cable is by the combination of single or multifiber and strengthen and protection is processed.
Optical time domain reflection technology (OTDR; Optical Time-Domain Reflectormetry) is used for estimating the performance of optical communication field optical fiber, optical cable and coupler at first; Be the means that are used to check fibre loss characteristic, fiber failure; Its working mechanism is: pulse laser is launched light pulse to tested optical fiber, this light pulse during through optical fiber because there is the microinhomogeneities of refractive index in optical fiber, and the variation of optical fiber microscopic characteristics; Some light can depart from original propagation to space scattering, in optical fiber, forms rear orientation light and forward scattering light.Wherein, the rear orientation light back kick casts to the top of optical fiber, delivers to a photodetector system through directional coupler, generates the OTDR curve in view of the above by photodetector system, and is for example shown in Figure 1, is a kind of OTDR curve.Because a measuring point on the corresponding fiber buss of each scattered light of propagating backward, the time-delay of scattered light promptly is reflected at the position on the fiber buss.
The OTDR curve of optical fiber is compared with the reference curve of this optical fiber of storing in advance; If the reflection peak of sudden change, or the attenuation coefficient of the OTDR curve of step or the optical fiber of sudden change surpass predetermined threshold value with respect to the increase value of the attenuation coefficient of reference curve, promptly the localization of faults accordingly and the localization of faults are with respect to the distance of test point.
The reflection peak of sudden change is that the more smooth section of optical fiber causes, for example the profile of optic fibre of cutter cutting is tested the OTDR curve that obtains and had an obvious crest with respect to reference curve;
The step of sudden change means that the OTDR curve begins to be smoothed curve, and the back produces step, is generally the optical cable fracture and causes;
The light decay consumption that attenuation coefficient causes for the optical cable transmission range, every type of optical cable all has specific physics pad value to different optical wavelength, is 0.20dB/km like the attenuation coefficient of 1550nm wavelength.
The concrete numerical value of said predetermined threshold value can independently be provided with in practical application, does not limit here.
Promptly can use this kind OTDR method of testing that every in optical cable optical fiber is tested in this step, obtain the OTDR curve.In the step 102, the position of the tap points that the fault point that LMC can obtain this optical fiber according to this OTDR curve is connected with other optical cable segment with respect to the distance and the optical fiber place optical cable segment of test point.Wherein, said test point is the position of OTDR test, the position at pulse laser place for example, and this test point is generally positioned at the physical locations at RTU place.
Step 102:LMC receives said OTDR curve, carries out accident analysis according to said OTDR curve;
Wherein, the realization of this step fault point that can confirm to specify optical fiber according to said OTDR curve for: LMC is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
Fault point how to confirm to specify optical fiber can be accomplished about the explanation and the correlation technique of the prior art of OTDR test in the refer step 101 with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable, repeats no more here.
Step 103:LMC stores the result of said accident analysis.
Here, the result that special memory device is used to store said accident analysis can be set, then LMC will be stored in the result of said accident analysis in the said special memory device in this step.
Concrete which kind of memory device that uses does not limit here.
Preferably, as shown in Figure 2, this method can further include:
Step 104:LMC reports to the police to the user according to the result of said accident analysis.
In practical application, can send the signalling trouble list to the corresponding integrated network management system of LMC by LMC, and send alarm signal to integrated network management system.Distance of the test point of RTU, fault point and this RTU or the like information under the record fault point in the said signalling trouble list.So that the user carries out the actual location and the maintenance of fault point.
In the method illustrated in figures 1 and 2, RTU specifies optical fiber to carry out the OTDR test to LMC under the control of LMC, and the OTDR curve that the OTDR test is obtained sends to LMC; LMC receives said OTDR curve, carries out accident analysis according to said OTDR curve; LMC stores the result of said accident analysis.Thereby realized roll-call fault test for a certain appointment optical fiber in the network.
Corresponding with said method, the application embodiment also provides a kind of roll-call test macro of optical fiber, and is as shown in Figure 3, and this system can comprise:
Transmitting element 310 is used under the control of LMC, specifying optical fiber to carry out the OTDR test to LMC, and the OTDR curve that the OTDR test is obtained sends to LMC;
Preferably, said analytic unit 320 specifically can be used for: receive said OTDR curve, the fault point of confirm specifying optical fiber according to said OTDR curve is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
Preferably, as shown in Figure 4, this system can also comprise:
Alarm unit 340 is used for reporting to the police to the user according to the result of accident analysis.
Wherein, said transmitting element 310 can be arranged among the RTU, and said analytic unit 320, memory cell 330 and alarm unit 340 can be arranged among the LMC.
In Fig. 3 and the system shown in Figure 4, transmitting element 310 specifies optical fiber to carry out the OTDR test to LMC under the control of LMC, and the OTDR curve that the OTDR test is obtained sends to LMC; Analytic unit 320 receives said OTDR curve, carries out accident analysis according to said OTDR curve; The result of the said accident analysis of memory cell 330 storages.Thereby realized roll-call fault test for a certain appointment optical fiber in the network.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. the roll-call method of testing of an optical fiber is characterized in that, comprising:
RTU specifies optical fiber to carry out the OTDR test to LMC under the control of LMC, and the OTDR curve that the OTDR test is obtained sends to LMC;
LMC receives said OTDR curve, carries out accident analysis according to said OTDR curve;
LMC stores the result of said accident analysis.
2. method according to claim 1 is characterized in that, said LMC carries out accident analysis according to said curve and comprises:
LMC confirm to specify optical fiber according to said OTDR curve fault point is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
3. method according to claim 1 and 2 is characterized in that, also comprises:
LMC reports to the police to the user according to the result of accident analysis.
4. the roll-call test macro of an optical fiber is characterized in that, comprising:
Transmitting element is used under the control of LMC, specifying optical fiber to carry out the OTDR test to LMC, and the OTDR curve that the OTDR test is obtained sends to LMC;
Analytic unit is used to receive said OTDR curve, carries out accident analysis according to said OTDR curve;
Memory cell is used to store the result of said accident analysis.
5. system according to claim 4; It is characterized in that; Said analytic unit specifically is used for: receive said OTDR curve, the fault point of confirm specifying optical fiber according to said OTDR curve is with respect to the position of the two ends tap points of the distance of test point and place, fault point optical cable.
6. according to claim 4 or 5 described systems, it is characterized in that, also comprise:
Alarm unit is used for reporting to the police to the user according to the result of accident analysis.
7. according to claim 4 or 5 described systems, it is characterized in that said transmitting element is arranged among the RTU, said analytic unit and memory cell are arranged among the LMC.
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| CN2012102968516A CN102811090A (en) | 2012-08-20 | 2012-08-20 | Method and system for roll-call testing of optical fibers |
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| CN2012102968516A CN102811090A (en) | 2012-08-20 | 2012-08-20 | Method and system for roll-call testing of optical fibers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744190A (en) * | 2014-01-17 | 2014-04-23 | 华北电力大学（保定） | Forward scattering and backward scattering compatible device based on pulse laser beams |
| 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 |
| CN110086528A (en) * | 2019-04-15 | 2019-08-02 | 北京盟力星科技有限公司 | A kind of resource management system based on optical cable on-line monitoring |
| CN111712699A (en) * | 2018-02-23 | 2020-09-25 | 三菱电机株式会社 | Multi-path monitoring device |
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| CN1540887A (en) * | 2003-04-23 | 2004-10-27 | 华为技术有限公司 | Optical transmission system possessing function for monitoring optical fibers and cables |
| CN1665173A (en) * | 2004-03-03 | 2005-09-07 | 华为技术有限公司 | Optical fibre fault monitoring and positioning system for communication network and method thereof |
| CN101447831A (en) * | 2008-12-17 | 2009-06-03 | 安徽电力通信有限责任公司 | Controlling system for special optical fiber cable monitoring station based on sockets |
| CN102082605A (en) * | 2009-12-01 | 2011-06-01 | 华为技术有限公司 | Optical network testing method, deice and system |
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2012
- 2012-08-20 CN CN2012102968516A patent/CN102811090A/en active Pending
Patent Citations (5)
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| JPH11284573A (en) * | 1998-03-31 | 1999-10-15 | Ando Electric Co Ltd | Otdr device |
| CN1540887A (en) * | 2003-04-23 | 2004-10-27 | 华为技术有限公司 | Optical transmission system possessing function for monitoring optical fibers and cables |
| CN1665173A (en) * | 2004-03-03 | 2005-09-07 | 华为技术有限公司 | Optical fibre fault monitoring and positioning system for communication network and method thereof |
| CN101447831A (en) * | 2008-12-17 | 2009-06-03 | 安徽电力通信有限责任公司 | Controlling system for special optical fiber cable monitoring station based on sockets |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744190A (en) * | 2014-01-17 | 2014-04-23 | 华北电力大学（保定） | Forward scattering and backward scattering compatible device based on pulse laser beams |
| CN103744190B (en) * | 2014-01-17 | 2016-04-06 | 华北电力大学（保定） | Based on forward scattering and the back scattering compatible apparatus of pulse laser beam |
| 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 |
| CN105306137A (en) * | 2014-06-27 | 2016-02-03 | 中兴通讯股份有限公司 | Optical fiber detection method, optical fiber detection device, optical fiber detection platform and network element management system |
| CN111712699A (en) * | 2018-02-23 | 2020-09-25 | 三菱电机株式会社 | Multi-path monitoring device |
| CN110086528A (en) * | 2019-04-15 | 2019-08-02 | 北京盟力星科技有限公司 | A kind of resource management system based on optical cable on-line monitoring |
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Application publication date: 20121205 |