CN1540887A - Optical transmission system possessing function for monitoring optical fibers and cables - Google Patents
Optical transmission system possessing function for monitoring optical fibers and cables Download PDFInfo
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Abstract
Optical fiber and cable automatic monitoring system 'OAMS' through integrating mode is embedded into traditional transmission system providing unitive network management, that is to say embedded type OAMS is realized based on platform of optical transmission system. Advantages of the system are shared hardware and software, full information circulation, quick positioning faults, and online monitoring.
Description
Technical field
The present invention relates to the monitoring of optical transmission system and optical fiber cable thereof.
Background technology
Since optical fiber communication have capacity big, transmit advantages such as information quality height, long transmission distance, stable performance, anti-electromagnetic interference, resistance to corrosion are strong, and obtained people's favor.Particularly in nearly ten years, along with people to the improving constantly of broadband services demand, optical fiber communication has obtained greatly developing.But meanwhile, the maintenance and management problem of optical cable is also outstanding day by day.Traditional fiber optic cable maintenance management mode all is a passive type, after fault (as broken string) takes place, and the maintenance of just sending someone, and the fault point is difficult to look for, and takes time and effort.Therefore, implement real-time monitoring and management to lightguide cable link, dynamically monitor the deterioration condition of lightguide cable link transmission performance, in time find and forecast optical cable hidden danger, to reduce the incidence of optical cable blocking-up, the fault of shortening optical cable is lasted and is seemed most important.
Optical fiber (cable) circuit automatic monitoring system (OAMS:Optical fiber cable lineAutomatic Monitoring Systems) and remote fiber test system (RFTS:RemoteFiber Testing Systems) is born in order to satisfy this demand, and (OAMS and RFTS function are basic identical, it is the title difference, below only with this title of OAMS), its main purpose strengthens the network maintainability exactly, improves monitoring and managerial skills to the optical fiber cable situation.
As shown in Figure 1, this system is loaded into the test light that optical time domain reflectometer OTDR (Optical Time Domain Reflectometer) sends in the tested optical fiber by optical switch (core component among the TAU:Test Access Unit), analyze backscatter signal in the optical fiber with detection fiber (cable) performance by OTDR (core component among the RTU:Remote Test Unit), the while combining geographic information GIS of system (Geography Information System), on computer screen, demonstrate the route and the abort situation (can be equipped with global position system GPS according to user's demand: Global Position System is with the longitude and latitude of fault location point) of optical cable and send warning in patterned mode, make administrative staff can see near the small towns that the fault point is very intuitively, the street, obvious terrestrial reference and related data, handle problems thereby make the attendant can in the shortest time, arrive in fault in-situ, reduce the caused loss of fault.On the other hand, can call the initial data of optical fiber in the database, be analyzed with current test data,, thereby can make the operator of fiber optic network make upgrading, replacing and the maintenance plan of fiber optic network at an easy rate with the deterioration of judging the optical fiber quality and the life-span of estimating optical cable etc.Among Fig. 1, TOS is a Testing Operations System Test Operating System, TSC/RTU is Test System Controller/Remote Test Unit test macro control/remote testing unit, TAP is a Test Access Path test access path, TAU is a Test AccessUnit Test Access Unit, Test Access Link is the test access link, and Control Link is the control link.
Existing optical fiber (cable) circuit automatic monitoring system OAMS is a system independently, mainly is made up of monitoring center at different levels and field monitoring station.The a plurality of monitoring stations of monitoring center's may command, each monitoring station is made up of OTDR module, optical switch, power module and alarm module etc., the variation of monitoring fiber transmission attenuation.Main monitoring mode has routine test (Routine testing), call the roll test (On-Demand Testing) and trouble alarm test (Fault Alarming Testing).
As mentioned above, existing OAMS system and optical transmission system are respectively two independently systems, operator generally buys from different equipment manufacturers, finish different functions respectively---monitoring optical fiber (cable) or transport service, both have network management system separately, independent operating has warning system separately, produces warning information separately.With regard to software and hardware, there be not any sharing and contact between two systems.From the angle of information, also be difficult between two autonomous systems realize interconnecting.
Summary is got up, and existing independent OAMS weak point is as follows: 1, be difficult to realize interconnecting with transmission equipment, Bi Yao information exchange between the two has certain difficulty.When 2, network failure took place, being difficult in time promptly distinguish was the transmission equipment fault, or optical fiber (cable) fault.3, independent OAMS is difficult to make full use of the function that former transmission equipment has possessed.For example, some independent OAMS needs shunting in the luminous power with system 3% at the collecting unit AIU of each monitoring station Optical Power Monitor Module, and this is less feasible for the less hop of luminous power degree more than needed.And in fact, optical power value is directly to obtain by the software inquiry at transmission equipment, and is simple and effective.4, be difficult to realize on-line monitoring.If will realize on-line monitoring, just must in light path, increase wavelength division multiplexer (WDM) and optical filter devices such as (Filter), certainly will cause the increase of hop overall loss, because transmission system is that another equipment supplier provides, if system margin deficiency, the application of OAMS on-line monitoring mode be to can causing certain impact in the transmission performance with system, even makes service transmission system unavailable.5, price height.Install one and overlap that independently optical fiber (cable) circuit monitoring system is very expensive, because need equipment such as independent frame, power supply, terminal, communication link, communication controler.
Summary of the invention
Purpose of the present invention is exactly in order to solve above-mentioned five problems of prior art, to propose a kind of optical transmission system with optical fiber cable monitoring function.
Optical transmission system with optical fiber cable monitoring function proposed by the invention comprises continuous optical transmission device, optical fiber cable, webmaster; It is characterized in that: also comprise the automatic monitoring subsystem of optical fiber cable, it comprises remote testing unit and test optical fiber access unit, the two respectively with described optical transmission device in system communication link to each other with control unit; Embedding in the described webmaster has the test and management module, and this module links to each other with the remote testing unit with control unit by system communication, is used for the remote testing unit is issued test command.
Also embed in the described webmaster parameter set unit, database and GIS-Geographic Information System are arranged, be respectively applied for remote testing configuration of cells test parameter, storing history data, demonstration optical cable route and abort situation, they and described test and management module constitute the part or all of of Test Operating System unit.
The alarm signal output of optical transmission device links to each other with the test and management module, so that the alarm signal that transmission equipment is produced in time starts the remote testing unit corresponding optical fiber link is monitored as the triggering signal of the automatic monitoring subsystem of fiber optic cable circuit.
The present invention passes through integration mode, the optical fiber cable automatic monitoring system is embedded in traditional transmission system, united net management, promptly realize embedded based on the optical transmission system platform, fully realize the shared and information interchange of software and hardware, can overcome the above-mentioned shortcoming of autonomous system to a certain extent, can in time respond, reach and determine rapidly the source of failure, easily realize on-line monitoring and the effect that reduces cost alarm signal.
Description of drawings
Fig. 1 is an existing fiber optic cable automatic monitoring system schematic diagram.
Fig. 2 is the optical transmission system schematic diagram that the present invention has the optical fiber cable monitoring function.
Fig. 3 is the optical transmission system function block diagram that the present invention has the optical fiber cable monitoring function.
Fig. 4 is the connection diagram that the present invention realizes on-line monitoring.
Fig. 5 is the connection diagram that the present invention realizes being equipped with fine monitoring.
Fig. 6 is that the present invention realizes long span on-line monitoring schematic diagram.
Embodiment
Fig. 2 has shown this embedded subsystem residing position in whole transmission system for the schematic diagram of the embedded OAMS of the present invention.On the hardware, on the basis of original transmission equipment, increase corresponding functional unit---RTU unit, OTAU unit and WDM, Filter etc., by system communication and control unit realize with other transmission equipment functional units between communicate by letter and with the communicating by letter of network management system (NM).The software aspect, Test Operating System (TOS) embeds in the transmission equipment network management system (NM) in modular mode, as the relatively independent part in NM inside, a plurality of RTU of may command and OTAU unit.
Fig. 3 is the functional block diagram of embedded OAMS.The user is by modules such as the parameter setting on the webmaster, test and managements, to RTU configuration testing parameter and issue test command, with finish the fault warning test, call the roll test, period measuring.Have database simultaneously with storing history data, and according to finishing the function of early warning with the comparison of historical data.If also be furnished with GIS-Geographic Information System in the webmaster, can show optical cable route and abort situation more conveniently.
In traditional transmission system, in case the influence that transmission performance is subjected to exceeds certain limit, transmission equipment will have corresponding alarm signal and produce, but as transmission system itself is accurately to distinguish equipment fault or line fault, more can't judge the accurate position of fault point in the optical fiber (cable).Yet in the present invention, realized the unified network management of optical transmission device and optical fiber (cable) monitoring subsystem, the alarm signal that transmission equipment can be produced is as receiving No Light Alarm, 10
-6The alarm signal of error code alarm or Optical Power Monitor Module etc., all kinds of and the performance-relevant warning information of optical fiber cable that the OAMS subsystem produces, such as fibercuts, the increase of link total losses etc., be included into former transmission system alarm storehouse, triggering signal as optical fiber (cable) test function, in time starting RTU corresponding optical fiber link is monitored, is equipment or circuit with rapid failure judgement source.If optical fiber (cable) fault, fault location point position and nature of trouble are put fibercuts, certain some opticalfiber splicing loss value increase or the increase of link total losses etc. as certain quickly and accurately.
The RTU unit is tested according to the order that receives, and result's processing can have following dual mode.One returns test data to webmaster by communication and control unit, is analyzed with location and diagnosis circuit question by webmaster.Its two, can there be storage the RTU unit, analyzes relatively, and alarm function, therefore can directly be finished the analysis contrast of test curve by the RTU unit, and the result after analyzing is passed to webmaster by communication and control unit.In case after detecting line fault, the Alarm Unit in the RTU unit can in time send warning information and notify webmaster.
Switching of light path finished, to test different optical fiber according to the order that receives in the OTAU unit.
When having provided on-line monitoring and be equipped with fine the monitoring, Fig. 4,5 inserts schematic diagram in network element place optical fiber (cable) test, when being exactly on-line monitoring, both difference structurally in optical fiber link, in position add WDM, according to practical devices technical indicator and system transmissions performance, between network element and WDM, can suitably add filter.As shown in Figure 4, RTU links to each other with OTAU, and OTAU links to each other with WDM again, and the test light that RTU is sent inserts tested optical fiber.Filter generally is placed on the tested optical fiber end, with the filtering test light, reduces the influence of test light to remote network element (NE).
As shown in Figure 4, by the switching of OTAU, RTU can monitor two adjacent sections of striding, and does not need each network element all to dispose monitoring equipment, thereby has reduced the monitoring cost at certain network element place.Simultaneously, for the section of striding that surpasses RTU unit full test distance, can monitor from two ends, as shown in Figure 6 at this section of striding two ends configuration monitoring equipment.For long optical fiber (cable) link of the section of striding, can adopt two-way method of testing, can completely monitor to guarantee whole link optical fiber property.What provide among Fig. 4,5 and 6 is the schematic diagram that monitoring function inserts on a network element, can dispose equally other network elements in the network.
As can be seen from the above description, the present invention has following several outstanding substantive distinguishing features:
1, in transmission system, increases new features: optical fiber (cable) path monitoring function.From the angle of hardware, optical fiber (cable) monitoring system is embedded in the existing optical transmission system in the mode of subsystem goes exactly, and this subsystem is the embedded OAMS based on the optical transmission system platform; The software aspect embeds former transmission equipment network management system with the OAMS Test Operating System, and both realize unified network management to make former transmission equipment and newly-increased embedded OAMS subsystem;
2, optical fiber (cable) monitoring function that possesses of this embedded OAMS includes but not limited to: fibercuts, optical fiber are aging, fibre loss variation, connecting loss increase, bending loss of optical fiber, return loss, reflection, external environment change variation that optical fiber (cable) performance is caused etc., and accurately locate the circuit fault point;
3, monitoring function implementation: on-line monitoring, off-line monitoring and fine fully monitoring;
4, when long span is monitored, can adopt the bidirectional test method;
5, during on-line monitoring, in the tested optical fiber link, add WDM, Filter device;
6, the WDM device that adds during on-line monitoring is used for test light that OTDR is sent and the photosynthetic ripple of system signal to enter tested optical fiber; In the tested optical fiber link, add the Filter device, be used for filtering test light in position, to avoid influencing the transmission equipment performance;
But 7, monitoring function execution cycle test (Routine testing), the test (On-Demandtesting) of calling the roll, fault warning test (Fault Alarming testing);
8, the triggering source of fault warning test can be the alarm signal that transmission equipment produces, as receiving No Light Alarm, 10
-6The alarm signal of error code alarm or Optical Power Monitor Module etc.; All kinds of and the performance-relevant warning information of optical fiber cable that the OAMS subsystem produces, such as fibercuts, the increase of link total losses etc., be included into former transmission system alarm storehouse, thereby make the alarm kind of transmission system more complete, system failure information can be reflected, line fault information can be reflected again;
9, can add the control relevant with period measuring on system communication and control unit, guarantee under the situation that webmaster lost efficacy, RTU also can the execution cycle test function;
10, there is storage the RTU unit, analyze relatively, and alarm function; Can directly produce warning information by the RTU unit;
11, range of application: all kinds of optical transmission systems include but not limited to wavelength-division multiplex system, SDH system, metropolitan area optical transmission system, undersea optical transmission system etc.
This optical fiber (cable) path monitoring subsystem is except possessing the lightguide cable link monitoring function, and in time find and locate outside line fault, the forecast optical cable hidden danger, integrated by software and hardware, it is unified that originally discrete optical transmission system and optical fiber (cable) monitoring system are realized.
The substantive distinguishing features that the above-mentioned reality of the present invention goes out makes the present invention compared with prior art have following obvious improvement:
1, embedded OAMS subsystem and transmission equipment are realized united net management, are easy to management;
2, effectively utilize existing function of transmission equipment and information, such as luminous power inquiry, alarm signal etc.When fault takes place, can start the OAMS test rapidly, directly on transmission system, distinguish the source of failure (transmission equipment fault or optical-fiber line fault) rapidly;
3, be easy to realize online monitoring function.The supplier of transmission equipment and optical fiber (cable) monitoring system is same, when engineering design, required system margin during the taking into account system on-line monitoring had simultaneously so both been given full play to the function of optical fiber (cable) monitoring performance, and the transmission performance of system is unaffected when guaranteeing on-line monitoring again;
4, cheap.Embedded OAMS subsystem can make full use of former transmission equipment software and hardware resources, such as frame, terminal, power supply, communication controler etc., reduces repeated construction, and then reduces cost significantly;
5, install simply, save the space.Only need on the hardware insert corresponding functional modules in the sub-frame of former transmission system, on the software, the software of webmaster and system communication and control board upgraded to get final product;
6, make the function of transmission equipment more complete,, can also carry out the monitoring of optical fiber (cable) link performance except finishing former transmission equipment all functions;
7, make the alarm kind of transmission equipment more complete, can reflect system failure information, can reflect line fault information again.
Claims (9)
1, a kind of optical transmission system with optical fiber cable monitoring function comprises continuous optical transmission device, optical fiber cable, webmaster (NM); It is characterized in that: also comprise the automatic monitoring subsystem of optical fiber cable (OAMS), it comprises remote testing unit (RTU) and test optical fiber access unit (OTAU), the two respectively with described optical transmission device in system communication link to each other with control unit; Embedding in the described webmaster (NM) has the test and management module, and this module links to each other with remote testing unit (RTU) with control unit by system communication, is used for remote testing unit (RTU) issued test command.
2, the optical transmission system with optical fiber cable monitoring function as claimed in claim 1, it is characterized in that: also embedding in the described webmaster (NM) has parameter set unit, database and GIS-Geographic Information System, be respectively applied for remote testing unit (RTU) configuration testing parameter, storing history data, demonstration optical cable route and abort situation, they and described test and management module constitute the part or all of of Test Operating System unit (TOS).
3, the optical transmission system with optical fiber cable monitoring function as claimed in claim 1 or 2, it is characterized in that: the alarm signal output of optical transmission device links to each other with the test and management module, so that the alarm signal that transmission equipment is produced in time starts remote testing unit (RTU) corresponding optical fiber link is monitored as the triggering signal of the automatic monitoring subsystem of optical fiber cable circuit (OAMS).
4, the optical transmission system with optical fiber cable monitoring function as claimed in claim 1 or 2, it is characterized in that: be provided with optical time domain reflectometer (OTDR) in the described remote testing unit (RTU), be used for sending test light and be loaded into tested optical fiber, and the backscatter signal in the analysis optical fiber is with the detection fiber properties of optical fiber cable.
5, the optical transmission system with optical fiber cable monitoring function as claimed in claim 1 or 2 is characterized in that: be provided with alarm module in the described remote testing unit (RTU), be used for sending warning information and notify webmaster (NM) after detecting line fault.
6, the optical transmission system with optical fiber cable monitoring function as claimed in claim 1 or 2, it is characterized in that: in the tested optical fiber link, adding has wavelength division multiplexer (WDM), described wavelength division multiplexer (WDM) links to each other with test optical fiber access unit (OTAU), test light is inserted tested optical fiber, realize on-line monitoring.
7, the optical transmission system with optical fiber cable monitoring function as claimed in claim 6 is characterized in that: in the tested optical fiber link, also adding has filter (Filter), and described filter (Filter) is located at the tested optical fiber end, is used for the filtering test light.
8, the optical transmission system with optical fiber cable monitoring function as claimed in claim 3 is characterized in that: the alarm signal of described optical transmission device comprises original instrument for equipment alarm signal and optical fiber property alarm signal.
9, the optical transmission system with monitoring function as claimed in claim 1 is characterized in that: described optical transmission system is wavelength-division multiplex system, SDH system, metropolitan area optical transmission system or undersea optical transmission system.
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| CNB031284418A CN1286281C (en) | 2003-04-23 | 2003-04-23 | Optical transmission system possessing function for monitoring optical fibers and cables |
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| CNB031284418A CN1286281C (en) | 2003-04-23 | 2003-04-23 | Optical transmission system possessing function for monitoring optical fibers and cables |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101095072B (en) * | 2004-11-03 | 2010-10-27 | Adc电信公司 | Fiber drop terminal |
| CN102412895A (en) * | 2011-11-23 | 2012-04-11 | 上海市电力公司 | Centralized monitoring method for optical cable resource |
| CN102523040A (en) * | 2011-12-26 | 2012-06-27 | 福建省电力有限公司福州电业局 | On-line monitoring method of submarine communication optical fiber and monitoring apparatus thereof |
| CN102571194A (en) * | 2010-12-20 | 2012-07-11 | 方正宽带网络服务股份有限公司 | Method for real-timely monitoring optical cable resources, device and system adopting same |
| CN101442691B (en) * | 2008-12-22 | 2012-07-25 | 武汉光迅科技股份有限公司 | Optical cable monitoring system based on passive optical network system |
| CN102811090A (en) * | 2012-08-20 | 2012-12-05 | 慈溪市供电局 | Method and system for roll-call testing of optical fibers |
| CN103916182A (en) * | 2011-12-26 | 2014-07-09 | 国家电网公司 | Online monitoring method for submarine communication optical fibers |
| CN104935379A (en) * | 2015-06-23 | 2015-09-23 | 深圳市海拓达电子技术有限公司 | Optical fiber online monitoring system |
| 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 |
| CN105553547A (en) * | 2015-12-16 | 2016-05-04 | 国网福建省电力有限公司 | Monitoring system of standby optical power cable |
| CN110808777A (en) * | 2019-11-15 | 2020-02-18 | 四川中电启明星信息技术有限公司 | Fault management and control system and method for optical fiber communication network |
| CN111884710A (en) * | 2020-07-29 | 2020-11-03 | 国网四川省电力公司广安供电公司 | Intelligent optical cable monitoring method and device, computer equipment and storage medium |
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2003
- 2003-04-23 CN CNB031284418A patent/CN1286281C/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101095072B (en) * | 2004-11-03 | 2010-10-27 | Adc电信公司 | Fiber drop terminal |
| CN101442691B (en) * | 2008-12-22 | 2012-07-25 | 武汉光迅科技股份有限公司 | Optical cable monitoring system based on passive optical network system |
| CN102571194A (en) * | 2010-12-20 | 2012-07-11 | 方正宽带网络服务股份有限公司 | Method for real-timely monitoring optical cable resources, device and system adopting same |
| CN102412895A (en) * | 2011-11-23 | 2012-04-11 | 上海市电力公司 | Centralized monitoring method for optical cable resource |
| CN102412895B (en) * | 2011-11-23 | 2015-04-15 | 上海市电力公司 | Centralized monitoring method for optical cable resource |
| CN102523040A (en) * | 2011-12-26 | 2012-06-27 | 福建省电力有限公司福州电业局 | On-line monitoring method of submarine communication optical fiber and monitoring apparatus thereof |
| CN103916182A (en) * | 2011-12-26 | 2014-07-09 | 国家电网公司 | Online monitoring method for submarine communication optical fibers |
| CN102523040B (en) * | 2011-12-26 | 2015-10-28 | 国家电网公司 | Submarine communication optical fiber monitoring method and monitoring device |
| CN102811090A (en) * | 2012-08-20 | 2012-12-05 | 慈溪市供电局 | Method and system for roll-call testing of optical fibers |
| 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 |
| 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 |
| CN104935379A (en) * | 2015-06-23 | 2015-09-23 | 深圳市海拓达电子技术有限公司 | Optical fiber online monitoring system |
| CN104935379B (en) * | 2015-06-23 | 2017-02-22 | 深圳市海拓达电子技术有限公司 | Optical fiber online monitoring system |
| CN105553547A (en) * | 2015-12-16 | 2016-05-04 | 国网福建省电力有限公司 | Monitoring system of standby optical power cable |
| CN110808777A (en) * | 2019-11-15 | 2020-02-18 | 四川中电启明星信息技术有限公司 | Fault management and control system and method for optical fiber communication network |
| CN111884710A (en) * | 2020-07-29 | 2020-11-03 | 国网四川省电力公司广安供电公司 | Intelligent optical cable monitoring method and device, computer equipment and storage medium |
| CN111884710B (en) * | 2020-07-29 | 2022-02-11 | 国网四川省电力公司广安供电公司 | Intelligent optical cable monitoring method and device, computer equipment and storage medium |
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