CN104125010A - Optical cable fault location method and device thereof - Google Patents
Optical cable fault location method and device thereof Download PDFInfo
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- CN104125010A CN104125010A CN201310148548.6A CN201310148548A CN104125010A CN 104125010 A CN104125010 A CN 104125010A CN 201310148548 A CN201310148548 A CN 201310148548A CN 104125010 A CN104125010 A CN 104125010A
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Abstract
The invention discloses an optical cable fault location method and a device thereof. The method contains the following steps: a measurement result of a monitored optical cable that is sent by an OTDR is received; length of an optical cable with a fault point is calculated according to the measurement result; and the fault point of the optical cable is located according to a preset optical cable line resource data model. According to the invention, the defect that insufficiency of present optical cable resources influences quick location algorithm of optical cable faults is solved, and practicality of an optical cable location algorithm technology is improved. Meanwhile, the connection problem of a resource model and a fiber core monitoring data intercommunication technology is solved, and users can rapidly locate faults through the above method.
Description
Technical field
The present invention relates to technical field of cable transmission, relate in particular to method and the device of a kind of Cable's Fault location.
Background technology
Transmission cable is the bridge of network service, find that in time optical cable fibre core hidden danger and rapid rush-repair become the most important thing, from the diachronic analysis of several fault, find fault points of optical cables geographical position and account for the approximately half the time (especially when night and bad weather) of whole repairing time.The key factor that shortens blocking-up duration is to locate fast geographical position, fault point, and notifies in time repair personnel by fault message, shortens to greatest extent blocking-up duration.Therefore, utilize Cable's Fault quick location technique locating optical cable fault point particularly important to shortening blocking-up duration and completing KPI index.
Application number is in the Chinese patent application file of CN201110376086.4, to disclose a kind of cable resource to concentrate monitoring administrating system.This system adds the system architecture of one deck monitoring operating platform based on secondary monitoring management platform, at least by provincial, and municipal level and local level Two monitor levels center, regulated and controled, and correspond to and with optical fiber or standby fibre, providing OTDR(Optical Time Domain Reflectometer, optical time domain reflectometer in fiber optic network by a plurality of monitoring stations in execution aspect) monitoring of the various ways such as test, luminous power test and interlock test thereof.System also provides abundant system management function, especially can according to system configuration parameter, draw the resource topology figure of whole network, the fast accurate location while utilizing GIS technology to help safeguard and look into barrier.
There is following defect in existing Cable's Fault location technology: by utilizing the management of GIS technology to fiber cable network resource, by the management of pipeline (boundary mark) management, calculator room equipment management, optical cable (fibre core) network is realized to optical cable location, resource management granularity is low, data volume is little, model is simple, in actual optical cable route, ignore on the reserving, draw of optical cable, hang wall, sag, the impact of joint on optical cable fibre core length, thereby affect the geo-location position of fault points of optical cables.
Summary of the invention
In order to solve the coarse technical problem in fault points of optical cables geo-location position in prior art, the present invention proposes method and the device of a kind of Cable's Fault location, to affect the specific targets leading in cable fault location model of cable length, by minute ergodic algorithm, relatively and the position of definite locator key event in resource model such as absolute growth computational algorithm.
One aspect of the present invention, has proposed a kind of method that Cable's Fault is located, and comprising: the test result that receives the monitored optical cable of OTDR transmission; The cable length breaking down a little according to described test result calculations; According to default lightguide cable link resource data model orientation fault points of optical cables.
Before the step of the test result of the monitored optical cable that preferably, described reception OTDR sends, also comprise: when the loss of lightguide cable link is greater than predetermined threshold value, OTDR tests described lightguide cable link.
Preferably, after the step of the default lightguide cable link resource data model orientation fault point of described basis and optical cable route, also comprise: according to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.
Preferably, described default lightguide cable link resource data model comprises the incidence relation of setting up between described lightguide cable link resource object model and described resource object.
Preferably, the described incidence relation of setting up between described lightguide cable link resource object model and described resource object further comprises step: the route topological data of the fiber cable network that obtains described lightguide cable link based on GIS; Obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length; According to geographical coordinate position, set up optical cable future part, draw, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
Preferably, the step of the default lightguide cable link resource data model orientation fault points of optical cables of described basis comprises: obtain each critical event point in optical cable test result; Described critical event point and described lightguide cable link resource data model are compared, determine critical event dot grid scope; According to the grid scope of described critical event point, utilize the position of convergence alignment algorithm locator key event in described resource data model.
Another aspect of the present invention, has also proposed the device that a kind of Cable's Fault is located, and comprises receiver module, computing module and locating module, wherein: and described receiver module, for receiving the test result of the monitored optical cable of OTDR transmission; Described computing module, for the cable length breaking down a little according to described test result calculations; Described locating module, for according to default lightguide cable link resource data model orientation fault points of optical cables.
Preferably, also comprise test module, when the loss of lightguide cable link is greater than predetermined threshold value, described test module, for testing described lightguide cable link by OTDR.
Preferably, also comprise correcting module, for according to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.
Preferably, also comprise presetting module, for setting up the incidence relation between described lightguide cable link resource object model and described resource object.
Preferably, described presetting module further comprises that route topological acquiring unit, resource data acquiring unit and logical relation set up unit, wherein: described route topological acquiring unit, the route topological data for the fiber cable network that obtains described lightguide cable link based on GIS; Described resource data acquiring unit, for obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length; Described logical relation is set up unit, for setting up optical cable future part according to geographical coordinate position, drawing, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
Preferably, described locating module also comprises critical event point acquiring unit, comparing unit and critical event point location unit, wherein: and described critical event point acquiring unit, for obtaining each critical event point of optical cable test result; Described comparing unit, for described critical event point and described lightguide cable link resource data model are compared, determines critical event dot grid scope; Described critical event point location unit, for according to the grid scope of described critical event point, utilizes the position of convergence alignment algorithm locator key event in described resource data model.
Method and the device of Cable's Fault of the present invention location, by adopting, the optical cable future part of cable length will be affected, draw, hang wall, sag, the leading in cable fault location models such as logic connecting relation of joint and tested optical fiber, with grid method, the joint of optical cable attenuation will be affected in resource, ODF and optical cross box etc. are carried out paragraph division, and by optical cable future part, draw, hang wall, the data that sag etc. affect length are divided into each paragraph, set up critical event dot grid model, by in minute ergodic algorithm, relatively and the computational algorithm of absolute growth, grid model in test event point and resource model is compared, determine critical event dot grid scope, again according to cut-off point and nearest attenuation points distance, utilize the position of the accurate locator key event of convergence alignment algorithm in resource model.The present invention has made up the not enough deficiency that affects Cable's Fault fast locating algorithm of existing cable resource, improved the practicality of optical cable location algorithm technology, solve the problem being connected in resource model and fibre core Monitoring Data interworking technology simultaneously, made user can pass through the quick fault location of the method.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the method for a kind of Cable's Fault location in the embodiment of the present invention;
Fig. 2 is the flow chart of setting up the incidence relation between lightguide cable link resource object model and described resource object;
Fig. 3 is according to the flow chart of default lightguide cable link resource data model orientation fault points of optical cables;
Fig. 4 is for being applied to Cable's Fault localization method of the present invention the flow chart of concrete detection system;
Fig. 5 is for calculating the method flow diagram of the cable length a little that breaks down;
Fig. 6 is for setting up the schematic diagram of grid model according to the data that affect cable length;
Fig. 7 is the structural representation of the device of a kind of Cable's Fault location in the embodiment of the present invention;
Fig. 8 is the structural representation of presetting module in Cable's Fault positioner;
Fig. 9 is the structural representation of locating module in Cable's Fault positioner.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Fig. 1 is the flow chart of the method for a kind of Cable's Fault location in the embodiment of the present invention.As shown in Figure 1, the method comprises the following steps:
The test result of the monitored optical cable that step 101, reception OTDR send;
Step 102, the cable length breaking down a little according to described test result calculations;
Step 103, according to default lightguide cable link resource data model orientation fault points of optical cables.
Preferably, before step 101, also comprise: when the loss of lightguide cable link is greater than predetermined threshold value, OTDR tests described lightguide cable link.After step 103, also comprise: according to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.Described default lightguide cable link resource data model comprises the incidence relation of setting up between described lightguide cable link resource object model and described resource object.
Fig. 2 is the flow chart of setting up the incidence relation between lightguide cable link resource object model and described resource object, specifically comprises the following steps:
Step 201, the route topological data of fiber cable network based on GIS of obtaining described lightguide cable link;
Step 202, obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length;
Step 203, according to geographical coordinate position, set up optical cable future part, draw, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
Fig. 3 is according to the flow chart of default lightguide cable link resource data model orientation fault points of optical cables, specifically comprises the following steps:
Step 301, obtain each critical event point in optical cable test result;
Step 302, described critical event point and described lightguide cable link resource data model are compared, determine critical event dot grid scope;
Step 303, according to the grid scope of described critical event point, utilize the position of convergence alignment algorithm locator key event in described resource data model.
Fig. 4, for Cable's Fault localization method of the present invention being applied to the flow chart of concrete detection system, as shown in Figure 4, relates generally to RTU far-end monitoring station equipment, monitoring center's service, note Mail Gateway, terminal, monitoring personnel etc., mainly comprises the following steps:
Step 401, RTU monitoring of tools optical cable route, when line loss is greatly when setting threshold value, automatically trigger OTDR this monitored optical fiber tested;
Step 402, OTDR test result information are sent to monitoring center's service;
Step 403, the monitoring center's service compute cable length a little that breaks down;
Step 404, monitoring center's server extract the reference curve of line resource data and setting, calculate the standard point that actual route interface and OTDR curve case point match, and find the nearest standard point in fault point and the distance that arrives this point, by fault point and physics optical cable route locating.
Step 405, monitoring center's server pass through note, mail, the modes such as phone, automatically by information such as position of failure point and near terrain surface specifications, notify related personnel, and there is alarm prompt at monitoring terminal computer, on GIS map, show fault point, and near terrain surface specifications search, for maintenance personal's reference.
Step 406, rush to repair successfully after, can automatically trigger RTU and again detect;
Step 407, when there is while departing from the position that physical fault position and system provide, operating personnel can preserve the physical location runout information revision of breaking down, as new standard point.
Fig. 5 calculates the method flow diagram of the cable length a little that breaks down in step 403 and step 404 in above-mentioned concrete detection system, comprise the following steps:
Step 501, OTDR test this monitored optical fiber, trigger Cable's Fault location algorithm flow process.
The model data of step 502, Gains resources.
Resource model data are to be provided by line resource management function, mainly comprise the incidence relation between 46 kinds of resource object models and resource object.First the route topological data of the fiber cable network of Gains resources based on GIS, optical cable is divided according to 50 meters one section, secondly, refine to the management of each support node (electric pole, markstone, the staff well) distance to optical cable, obtain optical cable future part, draw, hang wall, sag, joint etc. to the influential data of optical cable fibre core length, as: the coordinate of these objects and length.Its three, according to geographical coordinate position, set up optical cable future part, draw, hang the logic connecting relation of wall, sag, joint and every section of optical cable, instantiation tested optical fiber model.
Step 503, obtain each critical event point, attenuation point on test curve in optical cable test process.
With optical cable, be broken as example, get optical cable cut-off point and nearest attenuation points thereof and be critical event point, by in minute ergodic algorithm, relatively and the computational algorithm of absolute growth, grid model in test event point and resource model is compared, determine critical event dot grid scope, according to cut-off point and nearest attenuation points distance, utilize the position of the accurate locator key event of convergence alignment algorithm in resource model again.
Step 504, the position by the critical event point of disconnected cable in resource model are converted to latitude and longitude coordinates by the WGS84 coordinate system of GIS, and according to this coordinate carry out space buffer calculating to reference features or the sign within the scope of how many meters accordingly, generate fault location report data and GIS map graph data.
Step 505, by modes such as software interface, short multimedia message, WAP, export positioning result.
According to mobile network's construction specification, there is the rule of a fiber cable joint the every several kilometers of left and right of engineering construction, with grid method, the key point (joint, ODF and optical cross box etc.) that affects optical cable attenuation in resource is carried out to paragraph division, and by optical cable future part, the data of drawing, hanging wall, sag etc. and affect length are divided into each paragraph, set up grid model.
Fig. 6 is for setting up the schematic diagram of grid model according to the data that affect cable length, as shown in Figure 6, optical cable grid is divided can be divided into n level according to computational accuracy, and this example is given an example with 3 square kilometres and 50 square metres 2 grades.First take every 3 kilometers on map, delimit grid as a scope, by optical cable, joint, sag, reserve, draw first-class object and be mapped on this grid according to coordinate, the length range of optical cable that each grid covers is calculated in initialization, is convenient to rough calculation.Secondly, according to definite macrolattice, macrolattice is divided again according to 50 square metres, more accurately determined that grid covers the length of optical cable and the key point comprising, and is convenient to quick-searching.
Fig. 7 is the structural representation of the device of a kind of Cable's Fault location in the embodiment of the present invention.As shown in Figure 7, this device comprises receiver module 701, computing module 702 and locating module 703, wherein:
Described receiver module, for receiving the test result of the monitored optical cable of OTDR transmission;
Described computing module, for the cable length breaking down a little according to described test result calculations;
Described locating module, for according to default lightguide cable link resource data model orientation fault points of optical cables.
Preferably, also comprise test module, when the loss of lightguide cable link is greater than predetermined threshold value, described test module, for testing described lightguide cable link by OTDR.Correcting module, for, according to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.Presetting module, for setting up the incidence relation between described lightguide cable link resource object model and described resource object.
Fig. 8 is the structural representation of presetting module in Cable's Fault positioner, described presetting module further comprises that route topological acquiring unit 801, resource data acquiring unit 802 and logical relation set up unit 803, wherein: described route topological acquiring unit, the route topological data for the fiber cable network that obtains described lightguide cable link based on GIS; Described resource data acquiring unit, for obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length; Described logical relation is set up unit, for setting up optical cable future part according to geographical coordinate position, drawing, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
Fig. 9 is the structural representation of locating module in Cable's Fault positioner, described locating module also comprises critical event point acquiring unit 901, comparing unit 902 and critical event point location unit 903, wherein: described critical event point acquiring unit, for obtaining each critical event point of optical cable test result; Described comparing unit, for described critical event point and described lightguide cable link resource data model are compared, determines critical event dot grid scope; Described critical event point location unit, for according to the grid scope of described critical event point, utilizes the position of convergence alignment algorithm locator key event in described resource data model.
It should be noted that: above embodiment is only unrestricted in order to the present invention to be described, the present invention is also not limited in above-mentioned giving an example, and all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in claim scope of the present invention.
Claims (12)
1. a method for Cable's Fault location, is characterized in that, comprising:
Receive the test result of the monitored optical cable of OTDR transmission;
The cable length breaking down a little according to described test result calculations;
According to default lightguide cable link resource data model orientation fault points of optical cables.
2. method according to claim 1, is characterized in that, before the step of the test result of the monitored optical cable that described reception OTDR sends, also comprises:
When the loss of lightguide cable link is greater than predetermined threshold value, OTDR tests described lightguide cable link.
3. method according to claim 1 and 2, is characterized in that, the default lightguide cable link resource data model orientation fault point step of described basis also comprises afterwards:
According to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.
4. method according to claim 1 and 2, is characterized in that, described default lightguide cable link resource data model comprises the incidence relation of setting up between described lightguide cable link resource object model and described resource object.
5. method according to claim 4, is characterized in that, the described incidence relation of setting up between described lightguide cable link resource object model and described resource object further comprises step:
The route topological data of the fiber cable network that obtains described lightguide cable link based on GIS;
Obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length;
According to geographical coordinate position, set up optical cable future part, draw, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
6. method according to claim 5, is characterized in that, the step of the lightguide cable link resource data model orientation fault points of optical cables that described basis is default comprises:
Obtain each critical event point in optical cable test result;
Described critical event point and described lightguide cable link resource data model are compared, determine critical event dot grid scope;
According to the grid scope of described critical event point, utilize the position of convergence alignment algorithm locator key event in described resource data model.
7. a device for Cable's Fault location, is characterized in that, comprises receiver module, computing module and locating module, wherein:
Described receiver module, for receiving the test result of the monitored optical cable of OTDR transmission;
Described computing module, for the cable length breaking down a little according to described test result calculations;
Described locating module, for according to default lightguide cable link resource data model orientation fault points of optical cables.
8. device according to claim 7, is characterized in that, also comprises test module, and when the loss of lightguide cable link is greater than predetermined threshold value, described test module, for testing described lightguide cable link by OTDR.
9. according to the device described in claim 7 or 8, it is characterized in that, also comprise correcting module, for, according to lightguide cable link resource data model described in the Information revision of described lightguide cable link actual fault point and described locating optical cable fault point.
10. according to the device described in claim 7 or 8, it is characterized in that, also comprise presetting module, for setting up the incidence relation between described lightguide cable link resource object model and described resource object.
11. devices according to claim 10, is characterized in that, described presetting module further comprises that route topological acquiring unit, resource data acquiring unit and logical relation set up unit, wherein:
Described route topological acquiring unit, the route topological data for the fiber cable network that obtains described lightguide cable link based on GIS;
Described resource data acquiring unit, for obtain described lightguide cable link optical cable future part, draw, hang wall, sag and joint etc. to the influential resource data of described lightguide cable link fibre core length;
Described logical relation is set up unit, for setting up optical cable future part according to geographical coordinate position, drawing, hang wall, sag and joint in the logic connecting relation of every section of optical cable.
12. devices according to claim 11, is characterized in that, described locating module also comprises critical event point acquiring unit, comparing unit and critical event point location unit, wherein:
Described critical event point acquiring unit, for obtaining each critical event point of optical cable test result;
Described comparing unit, for described critical event point and described lightguide cable link resource data model are compared, determines critical event dot grid scope;
Described critical event point location unit, for according to the grid scope of described critical event point, utilizes the position of convergence alignment algorithm locator key event in described resource data model.
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