CN102820920A - Fault point localizing method and device - Google Patents
Fault point localizing method and device Download PDFInfo
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- CN102820920A CN102820920A CN2012102975079A CN201210297507A CN102820920A CN 102820920 A CN102820920 A CN 102820920A CN 2012102975079 A CN2012102975079 A CN 2012102975079A CN 201210297507 A CN201210297507 A CN 201210297507A CN 102820920 A CN102820920 A CN 102820920A
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Abstract
The invention discloses a fault point localizing method and a fault point localizing device. The method comprises the following steps of determining a distance interval of each power device by which each optical cable passes relative to an optical time domain reflectometer (OTDR) test point for each optical cable; conducting the OTDR test on each optical cable, and determining a distance between a fault point of the optical cable and the test point according to an OTDR curve obtained through the OTDR test; and determining a power device corresponding to the distance interval in which the distance stays according to the distance interval of each power device by which the optical cable passes relative to the OTDR test point. The method and the device can realize the localization of the fault point of the optical cable in a communication transmission network.
Description
Technical field
The present invention relates to power domain, relate in particular to a kind of fault point positioning method and device.
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 fault point positioning method and device are provided, and can realize the location of Cable's Fault point in the communications network.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of fault point positioning method comprises:
For every optical cable, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
For every optical cable, this optical cable is carried out the OTDR test, the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point;
According to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
Also comprise: corresponding power equipment shows to the user between the said distance place distance regions that will confirm.
Said power equipment comprises: bar, tower, stand, well.
A kind of localization of fault device comprises:
First confirms to be used for for every optical cable the unit, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
Second confirms the unit, is used for for every optical cable, and this optical cable is carried out the OTDR test, and the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point;
The 3rd confirms the unit, be used for according to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
Also comprise: display unit is used for corresponding power equipment between the said distance place distance regions of confirming is shown to the user.
Said power equipment comprises: bar, tower, stand, well.
Technique effect analysis for technique scheme is following:
For every optical cable, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process; For every optical cable, this optical cable is carried out the OTDR test, the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point; According to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place; Thereby realized location for fault point in the optical cable.
Description of drawings
Fig. 1 is the application embodiment fault point positioning method schematic flow sheet;
Fig. 1 a is that the application embodiment power equipment is with respect to sketch map between the distance regions of test point;
Fig. 2 is the application embodiment localization of fault apparatus structure sketch map.
Embodiment
Specify the realization of the application's embodiment fault point positioning method and device below in conjunction with accompanying drawing.
Fig. 1 is the application embodiment fault point positioning method schematic flow sheet, and as shown in Figure 1, this method comprises:
Step 101: for every optical cable, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
Wherein, Every optical cable through bar, tower, stand, various power equipments such as well; These power equipments all have fixing distance with respect to a certain preset test point on optical cable; Here the optical cable segment between two kinds of power equipments is dispensed in the distance range of two kinds of power equipments, thereby for each power equipment, it all has between a distance regions with respect to test point on optical cable.
Shown in Fig. 1 a, power equipment A is with respect between the distance regions of test point T being: [3m, 5m), and power equipment B with respect between the distance regions of test point T be (5m, 10m].Wherein, can in practical application, independently set division rule between the distance regions of each power equipment, not limit here.
Step 102: for every optical cable, this optical cable is carried out the OTDR test, the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point;
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.
Both can use this kind OTDR method of testing that every in optical cable optical fiber is tested in this step, obtain the distance of the fault point of every optical fiber, also promptly obtain the distance of the fault point of optical cable with respect to test point with respect to test point.
Step 103: according to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
Preferably, as shown in Figure 1, this method can also comprise:
Step 104: corresponding power equipment shows to the user between the said distance place distance regions that will confirm.
Here, can store the corresponding descriptor of each power equipment in advance, for example the sign of power equipment, title, geographical position etc.Thereby in the step 104 with power equipment when the user shows, can realize through showing the corresponding descriptor of this power equipment.After thereby the user obtains the corresponding descriptor of power equipment; Promptly can the pairing power equipment of the localization of faults; Thereby reduce actual when carrying out the fault point maintenance activity; Directly utilize the fault point with respect to the error that infer fault point brought for example between the test point, the fault point has been navigated to more exactly on the geographical position at power equipments such as bar, tower, well station place.
In the method shown in Figure 1, for every optical cable, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process; For every optical cable, this optical cable is carried out the OTDR test, the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point; According to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place; Thereby realized location for fault point in the optical cable; And; With localization of fault to the physical location of a certain concrete power equipment, thereby reduce actually when carrying out the fault point maintenance activity, directly utilize the fault point with respect to the error that infer fault point brought for example between the test point.
Corresponding with said method, the application embodiment also provides a kind of localization of fault device, and is as shown in Figure 2, comprising:
First confirms to be used for for every optical cable unit 210, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
The 3rd confirms unit 230, be used for according to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
Preferably, as shown in Figure 2, this device can also comprise: display unit is used for corresponding power equipment between the said distance place distance regions of confirming is shown to the user.
Wherein, said power equipment comprises: bar, tower, stand, well.
In the device shown in Figure 2, for every optical cable, first confirm unit 210 confirm these optical cables between the distance regions of each power equipment with respect to the OTDR test point of process; For every optical cable, second confirms that 220 pairs of these optical cables in unit carry out the OTDR test, and the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point; The 3rd confirm unit 230 according to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place; Thereby realized location for fault point in the optical cable; And; With localization of fault to the physical location of a certain concrete power equipment, thereby reduce actually when carrying out the fault point maintenance activity, directly utilize the fault point with respect to the error that infer fault point brought for example between the test point.
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 (6)
1. a fault point positioning method is characterized in that, comprising:
For every optical cable, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
For every optical cable, this optical cable is carried out the OTDR test, the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point;
According to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
2. method according to claim 1 is characterized in that, also comprises:
Corresponding power equipment between the said distance place distance regions of confirming is shown to the user.
3. method according to claim 1 and 2 is characterized in that, said power equipment comprises: bar, tower, stand, well.
4. a localization of fault device is characterized in that, comprising:
First confirms to be used for for every optical cable the unit, confirm this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process;
Second confirms the unit, is used for for every optical cable, and this optical cable is carried out the OTDR test, and the OTDR curve that test obtains according to OTDR is confirmed the fault point of optical cable and the distance between the test point;
The 3rd confirms the unit, be used for according to this optical cable between the distance regions of each power equipment with respect to the OTDR test point of process, confirm corresponding power equipment between the distance regions of said distance place.
5. device according to claim 4 is characterized in that, also comprises:
Display unit is used for corresponding power equipment between the said distance place distance regions of confirming is shown to the user.
6. according to claim 4 or 5 described devices, it is characterized in that said power equipment comprises: bar, tower, stand, well.
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| CN2012102975079A CN102820920A (en) | 2012-08-20 | 2012-08-20 | Fault point localizing method and device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048117A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for realizing accurate location of optical cable fault point through Raman scattering |
| CN103560825A (en) * | 2013-11-13 | 2014-02-05 | 国家电网公司 | Method for improving locating precision of optical fiber fault location of multi-stage unequal EPON network |
| CN103780305A (en) * | 2014-01-23 | 2014-05-07 | 深圳市金宏威技术股份有限公司 | Concentrated monitoring and managing method and system of power distribution network communication optical cable network |
| CN103812554A (en) * | 2014-02-27 | 2014-05-21 | 李华敏 | Method and auxiliary device for positioning fault point of optical cable |
| CN104079346A (en) * | 2014-07-23 | 2014-10-01 | 国家电网公司 | Remote judging and positioning method and device for EPON (Ethernet Passive Optical Network) multi-level non-average optical fiber link circuit failures |
| CN104125010A (en) * | 2013-04-25 | 2014-10-29 | 中国移动通信集团河北有限公司 | Optical cable fault location method and device thereof |
| CN104202086A (en) * | 2014-09-26 | 2014-12-10 | 国家电网公司 | Optical cable fault location method |
| CN105866617A (en) * | 2016-03-11 | 2016-08-17 | 国网江西省电力科学研究院 | Power transmission line grounding flashover fault positioning method based on optical fiber sensing technology |
| CN110365402A (en) * | 2018-03-30 | 2019-10-22 | 福建发展高速公路股份有限公司驻厦门办事处 | Cable's Fault retrieval by window system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048117A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for realizing accurate location of optical cable fault point through Raman scattering |
| CN104125010A (en) * | 2013-04-25 | 2014-10-29 | 中国移动通信集团河北有限公司 | Optical cable fault location method and device thereof |
| CN104125010B (en) * | 2013-04-25 | 2016-12-28 | 中国移动通信集团河北有限公司 | A kind of method and device of Cable's Fault location |
| CN103560825B (en) * | 2013-11-13 | 2016-08-17 | 国家电网公司 | A kind of improve the multistage non-method dividing equally EPON network fiber abort situation location accuracy |
| CN103560825A (en) * | 2013-11-13 | 2014-02-05 | 国家电网公司 | Method for improving locating precision of optical fiber fault location of multi-stage unequal EPON network |
| CN103780305A (en) * | 2014-01-23 | 2014-05-07 | 深圳市金宏威技术股份有限公司 | Concentrated monitoring and managing method and system of power distribution network communication optical cable network |
| CN103780305B (en) * | 2014-01-23 | 2017-02-15 | 深圳市金宏威技术股份有限公司 | Concentrated monitoring and managing method and system of power distribution network communication optical cable network |
| CN103812554A (en) * | 2014-02-27 | 2014-05-21 | 李华敏 | Method and auxiliary device for positioning fault point of optical cable |
| CN103812554B (en) * | 2014-02-27 | 2016-04-06 | 朱惠君 | A kind of localization method of fault points of optical cables and servicing unit |
| CN104079346A (en) * | 2014-07-23 | 2014-10-01 | 国家电网公司 | Remote judging and positioning method and device for EPON (Ethernet Passive Optical Network) multi-level non-average optical fiber link circuit failures |
| CN104202086A (en) * | 2014-09-26 | 2014-12-10 | 国家电网公司 | Optical cable fault location method |
| CN105866617A (en) * | 2016-03-11 | 2016-08-17 | 国网江西省电力科学研究院 | Power transmission line grounding flashover fault positioning method based on optical fiber sensing technology |
| CN110365402A (en) * | 2018-03-30 | 2019-10-22 | 福建发展高速公路股份有限公司驻厦门办事处 | Cable's Fault retrieval by window system |
| CN110365402B (en) * | 2018-03-30 | 2020-08-14 | 福建省厦门高速公路管理有限公司 | Optical cable fault positioning and retrieving system |
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Application publication date: 20121212 |