CN103560825A - Method for improving locating precision of optical fiber fault location of multi-stage unequal EPON network - Google Patents
Method for improving locating precision of optical fiber fault location of multi-stage unequal EPON network Download PDFInfo
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- CN103560825A CN103560825A CN201310566697.4A CN201310566697A CN103560825A CN 103560825 A CN103560825 A CN 103560825A CN 201310566697 A CN201310566697 A CN 201310566697A CN 103560825 A CN103560825 A CN 103560825A
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Abstract
A method for improving locating precision of an optical fiber fault location of a multi-stage unequal EPON network is characterized by comprising the following steps of first utilizing an OTDR to emit an optical signal to conduct normal detection, finding crests generated by optical splitter nodes in an optical cable on an echo signal diagraph, calculating the lengths of the distance between the crests and a lighting source, and storing length information of the distance between the crests corresponding to the optical splitter nodes and the lighting source; then when the optical cable malfunctions, re-utilizing the OTDR to emit testing light, and determining the length of the distance between the fault point and the lighting source through the fault crests of the echo signal diagraph; searching for the nearest slitter node of a circuit to find the slitter node nearest to the fault point; and finally, further forming point longitude and latitude by utilizing the optical cable through towers and the like in the direction from the splitter node nearest to the fault point to the fault point, and calculating the distance. The method for improving locating precision of the optical fiber fault location of the multi-stage unequal EPON network is high in locating precision and high in speed.
Description
Technical field
The present invention relates to a kind of Fibre Optical Communication Technology, especially a kind of fiber failure point location technology, specifically a kind ofly for carrying out abort situation after the multistage non-EPON of dividing equally network cable circuit generation fiber failure, infer the method for location, after there is the multistage non-EPON of dividing equally (Ethernet passive optical network) network fiber fault, utilize optical time domain reflectometer measure the multistage non-EPON of dividing equally network form in each optical splitter node and fault point apart from luminous point length, according to relativeness and circuit geographic paths between fault point and optical splitter node, calculate and represent a kind of method to the concrete position of failure point of user.
Background technology
In the monitoring of EPON Cable's Fault, need to receive optical time domain reflectometer abort situation and position of failure point is reflected in the specific geographic figure of trend of circuit.Conventionally the method adopting is: first, by optical time domain reflectometer, transmission test light, by echo and normal echo pattern comparing calculation, obtains fault point apart from the length of light emitting source.Subsequently, by line route, move towards and form the detailed longitude and latitude of point (being shaft tower, inspection shaft etc.) to calculate, obtain fault point particular geographic location.Use the method, due to optical cable form point many and have that remaining cable dish in longitude and latitude measure error, optical cable self paragraph stays, optical cable hang reel in the pole line gradient, website around etc. the existence of factor, by causing, directly utilize the uncertainty of error under resource latitude and longitude coordinates infer fault point location method to increase, for eliminating above factor, need artificial refinement maintenance, difficulty is larger.
Summary of the invention
The object of the invention is to utilize fault point and the nearest internodal Distance Remaining of optical splitter to carry out abort situation reckoning, reduce that remaining cable dish stays as far as possible, longitude and latitude error, the pole line gradient, website inner disk around etc. the error component that the brings probability of occurrence in fault is calculated, improve the accuracy of fault point display location.Its cardinal principle way is: utilize test optical fiber data analysis to go out the distance of each optical splitter nodal distance illuminating source of lightguide cable link, again from further calculating that apart from the nearest optical splitter node location in fault point it arrives the residue length between fault point, finally, utilize optical cable to form the geographical coordinate of point (shaft tower, inspection shaft) etc., from nearest optical splitter Nodes, infer backward and positioning optical waveguides fault point particular location.
Technical scheme of the present invention is:
A method that improves the multistage non-EPON of dividing equally network fiber abort situation location accuracy, is characterized in that it comprises the following steps:
First: utilize OTDR optical time domain reflectometer, utilizing emitted light signal normally detects, on echo pattern, find out the crest causing due to optical splitter node, calculate the corresponding crest of each node apart from the distance length of light emitting source, the data of optical splitter node location data and corresponding crest are stored in database;
Then: when optical cable breaks down, transmission test light, establishes fault point apart from the distance of light emitting source by the fault crest figure of echo-signal figure again;
Last: to search nearest circuit optical splitter node, find the optical splitter node nearest with fault point, the distance of fault point and nearest optical splitter nodal distance light emitting source is subtracted each other, obtain Distance Remaining, from this optical splitter node, start to place, fault point direction, further utilize optical cable geographic paths to form and calculate abort situation.
Described optical time domain reflectometer fault measuring principle, that by optical time domain reflectometer, to launch pulsewidth be 30ns, after wavelength is the test light of 1650nm, light wave is through optical fiber glass medium, after generation scattering, return to the echo waveform of tester, section in running into fiber path or physical connector, medium refraction index changes, easily produce stronger reverberation, cause the echo of generation to occur crest, the time of the transmission speed according to light in different refractivity and reception echo, can calculate and produce crest place apart from the distance of light emitting source.
The described molten node of joining is welding and the distribution node between every optical cable fibre core in lightguide cable link, and in geographic paths, main manifestations is optical cable welding connector box, indoor and outdoor optical fiber distributing unit.
Beneficial effect of the present invention:
The present invention utilizes optical time domain reflectometer to test and obtain fault point and the nearest internodal Distance Remaining of optical splitter, by optical cable geographic paths, carry out abort situation reckoning again, reduce that remaining cable dish stays as far as possible, longitude and latitude error, the pole line gradient, website inner disk around etc. the error component that the brings probability of occurrence in fault is calculated, improve the accuracy of fault point display location.
The present invention utilizes database and application software, binds each optical splitter node and test echo-peak in lightguide cable link, can safeguard easily the precise length of optical cable between each paragraph.In Cable's Fault repairing, cause that remaining cable reduces, cutover causes under path and node situation of change, utilize the physical length that software and test echo can Fast-Maintenance optical cable, minimizing manual measurement difficulty and maintenance of information workload.
The present invention uses computer-assisted diasnosis lightguide cable link Wave data to change, Image Via Gis nearest optical splitter node deduction particular location displaying from fault point simultaneously.
The present invention can effectively reduce directly by the error producing in OTDR test failure point length and optical cable geographical position reckoning process.In EPON network configuration, because fault point is shorter apart from optical splitter nodal distance, although the deduction of the Distance Remaining in the present invention still obtains by calculation of longitude & latitude, but compare directly and utilize the geographical infer fault point methods that forms in optical cable path from luminous point, greatly reduce the probability of occurrence of reckon error, improved the precision that position of failure point is located on the figure of geographical position.
Accompanying drawing explanation
Fig. 1 is the concrete operations flow chart of implementation method of the present invention.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is further illustrated.
As shown in Figure 1.
A method that improves the multistage non-EPON of dividing equally network fiber abort situation location accuracy, it comprises the following steps:
A, select and utilize OTDR to test certain lightguide cable link
Utilize optical time domain reflectometer, test certain EPON circuit, by WDM wave multiplexer, test wavelength light is squeezed in operational system circuit, obtain backscattered oscillogram, obtain the reflection at peak that each optical splitter node causes and calculate it apart from the length of optical time domain reflectometer luminous point.
History of existence Wave data whether in B, database;
In judgement database, whether there are the historical test waveform data of this circuit, if do not exist, shown it is to carry out for the first time initialization survey, need to proceed to K step, carried out initialization.If exist, show that current test is routine inspection test, enters C step.
C, judge whether waveform changes;
The current waveform of acquisition and historical waveform are contrasted, judge whether to change.If after contrast, find that waveform is unchanged, show optical cable normal operation, enter E step.If find, waveform changes, and mainly by two kinds of reasons, is caused, a class is the variation that circuit causes path to form due to repairing, cutover operation, and another kind of for there is fracture defect, concrete judgement proceeds to F step.
D: judge whether line route changes
This step, for distinguishing the concrete reason that causes wave form varies, is mainly completed by manual intervention, and after system discovery wave form varies, prompting user, proceeds to corresponding treatment step by user.If change in path, can, according to alteration, enter K step and carry out data maintenance.
E, rest one-period
This step can arrange according to user, after certain cycle of having a rest, enters next operating process, and making zero of principal security equipment parameters, after having paused, enters A step again.
F: according to waveshape fault point distance
Utilize OTDR optical time domain reflectometer linear measure longimetry principle, calculate fault point apart from the length of OTDR luminous point.
G: obtain and the nearest line node in fault point
This,, after obtaining fault point distance, searches the optical splitter node nearest with fault point immediately, and the latitude and longitude coordinates according to optical splitter node in GIS-Geographic Information System positions.Because the nearest optical splitter Nodes of EPON circuit may exist branch, be difficult to establish place, fault point branch road, can report situations and intervene according to network management system, first carry out the confirmation of place, fault point branch road, then carry out the reckoning work of breakpoint.
H: start to calculate the position of fault point path forms from nearest node
Navigate to behind nearest optical splitter node geographical position, fault point, utilize fault point and this optical splitter nodal distance light emitting source range difference (residue length), by optical cable, from Nodes to fault point direction, utilize optical cable path to form some latitude and longitude coordinates and progressively calculate, until position of failure point.
I: represent geographical position, fault point
Obtain behind geographical position, fault point, utilize GIS-Geographic Information System to follow the tracks of position, floor height bright demonstration fault point.
J: whether restart to detect
By user, judge whether to restart the testing of new round optical cable.
K: maintenance line geographic paths forms
By manually safeguarding the concrete trend of optical cable or carry out lightguide cable link cutover operation in GIS-Geographic Information System.
L: calculate crest corresponding node distance according to test waveform
By test waveform medium wave peak, apart from light emitting source distance, calculate the optical cable distance that corresponding optical splitter node leaves light emitting source.
M: nodal distance information is bound and preserved in artificial participation
Wave data is stored in database, calculates the length of the distance luminous point of each optical splitter node simultaneously, by artificial map bindings in GIS-Geographic Information System.
Above content is in conjunction with embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (3)
1. improve a multistage non-method of dividing equally EPON network fiber abort situation location accuracy, it is characterized in that it comprises the following steps:
First: utilize OTDR optical time domain reflectometer, utilizing emitted light signal normally detects, on echo pattern, find out the crest that in lightguide cable link, each optical splitter node causes, calculate each crest apart from the distance length of light emitting source, the distance and position of each optical splitter node and crest information are stored in database;
Then: when optical cable breaks down, again utilize OTDR optical time domain reflectometer transmission test light, by the fault crest of echo-signal waveform, establish fault point apart from the distance of light emitting source;
Subsequently: search the optical splitter node nearest with fault point, the distance of fault point and nearest optical splitter nodal distance light emitting source is subtracted each other, obtain Distance Remaining;
Last: from fault point, nearest optical splitter node starts to place, fault point direction, further utilize optical cable to form some longitude and latitude through shaft tower and calculate position of failure point.
2. method according to claim 1, it is characterized in that making full use of optical time domain reflectometer at pulsewidth 30ns, under 1650nm test wavelength, avoid directly as far as possible from luminous point utilize that optical cable path latitude and longitude coordinates calculates that the remaining cable dish existing abort situation method stays, longitude and latitude error, the pole line gradient, the coiling of website interior cables cannot directly calculate the error component that bring by longitude and latitude, improves the accuracy of fault point display location; First it utilize test optical fiber data analysis to go out the distance of each optical splitter nodal distance illuminating source of lightguide cable link, again from further calculate the residue length arriving between fault point apart from the nearest optical splitter node location in fault point, finally, the geographic paths latitude and longitude coordinates of utilizing optical cable to form point (shaft tower, inspection shaft) etc. is inferred and positioning optical waveguides fault point particular location.
3. method according to claim 1, is characterized in that utilizing computer software storing fiber optic test waveform data, and the comparing calculation a little nearest optical splitter node location that is out of order, and from this position, further calculates position of failure point.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104333417A (en) * | 2014-09-23 | 2015-02-04 | 国网安徽省电力公司阜阳供电公司 | Electric power communication optical cable fault positioning technology |
| CN107529101A (en) * | 2016-06-21 | 2017-12-29 | 中兴通讯股份有限公司 | Mobile terminal, passive optical network information collection method and device |
| CN108512592A (en) * | 2018-04-13 | 2018-09-07 | 国网山西省电力公司信息通信分公司 | A kind of interruption of optical cables type diagnostic system and method based on breakpoint figure characteristic point |
| CN108809409A (en) * | 2018-04-13 | 2018-11-13 | 国网山西省电力公司信息通信分公司 | A kind of optical cable attenuation type diagnostic system and method based on attenuation graphic feature point |
| CN108833002A (en) * | 2018-04-28 | 2018-11-16 | 烽火通信科技股份有限公司 | A kind of optical link detection method and system based on passive optical network |
| CN108923847A (en) * | 2018-08-09 | 2018-11-30 | 平湖波汇通信科技有限公司 | A kind of Cable's Fault monitoring and accurate positioning method based on GIS |
| CN109217917A (en) * | 2017-06-30 | 2019-01-15 | 中兴通讯股份有限公司 | The location determining method and device of failure optical fiber, storage medium, processor |
| CN111025306A (en) * | 2019-11-15 | 2020-04-17 | 浙江浙能天然气运行有限公司 | Vibration positioning method and system based on phase-sensitive OTDR |
| CN114362819A (en) * | 2021-12-30 | 2022-04-15 | 中国电信股份有限公司 | Optical cable fault point positioning method, device, equipment and medium |
| CN115021804A (en) * | 2022-05-31 | 2022-09-06 | 广东电网有限责任公司 | Long-distance communication optical cable fault positioning method and related device |
| CN115514628A (en) * | 2022-09-25 | 2022-12-23 | 四川旅游学院 | Optical fiber wiring and fault locating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN104333417A (en) * | 2014-09-23 | 2015-02-04 | 国网安徽省电力公司阜阳供电公司 | Electric power communication optical cable fault positioning technology |
| CN107529101A (en) * | 2016-06-21 | 2017-12-29 | 中兴通讯股份有限公司 | Mobile terminal, passive optical network information collection method and device |
| CN109217917A (en) * | 2017-06-30 | 2019-01-15 | 中兴通讯股份有限公司 | The location determining method and device of failure optical fiber, storage medium, processor |
| CN108809409B (en) * | 2018-04-13 | 2021-04-20 | 国网山西省电力公司信息通信分公司 | Optical cable attenuation type diagnosis system and method based on attenuation graph characteristic points |
| CN108809409A (en) * | 2018-04-13 | 2018-11-13 | 国网山西省电力公司信息通信分公司 | A kind of optical cable attenuation type diagnostic system and method based on attenuation graphic feature point |
| CN108512592A (en) * | 2018-04-13 | 2018-09-07 | 国网山西省电力公司信息通信分公司 | A kind of interruption of optical cables type diagnostic system and method based on breakpoint figure characteristic point |
| CN108833002A (en) * | 2018-04-28 | 2018-11-16 | 烽火通信科技股份有限公司 | A kind of optical link detection method and system based on passive optical network |
| CN108833002B (en) * | 2018-04-28 | 2020-04-28 | 烽火通信科技股份有限公司 | Optical link detection method and system based on passive optical network |
| CN108923847A (en) * | 2018-08-09 | 2018-11-30 | 平湖波汇通信科技有限公司 | A kind of Cable's Fault monitoring and accurate positioning method based on GIS |
| CN111025306A (en) * | 2019-11-15 | 2020-04-17 | 浙江浙能天然气运行有限公司 | Vibration positioning method and system based on phase-sensitive OTDR |
| CN114362819A (en) * | 2021-12-30 | 2022-04-15 | 中国电信股份有限公司 | Optical cable fault point positioning method, device, equipment and medium |
| CN115021804A (en) * | 2022-05-31 | 2022-09-06 | 广东电网有限责任公司 | Long-distance communication optical cable fault positioning method and related device |
| CN115021804B (en) * | 2022-05-31 | 2024-04-19 | 广东电网有限责任公司 | Long-distance communication optical cable fault positioning method and related device |
| CN115514628A (en) * | 2022-09-25 | 2022-12-23 | 四川旅游学院 | Optical fiber wiring and fault locating method |
| CN115514628B (en) * | 2022-09-25 | 2024-04-05 | 四川旅游学院 | Optical fiber wiring and fault positioning method |
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