CN116032358B - Fiber core flashing judging method, device, system and storage medium - Google Patents
Fiber core flashing judging method, device, system and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of optical fiber communication, and discloses a fiber core flashing judging method, a device, a system and a storage medium, which are used for rapidly capturing an OTDR waveform at fiber core flashing moment and determining fiber core flashing positions. The core flashing bit method comprises the following steps: acquiring a multi-frame OTDR waveform chart and a plurality of optical power acquisition data stored in a time sequence database, wherein the multi-frame OTDR waveform chart is acquired through an OTDR device and stored in the time sequence database, and the plurality of optical power acquisition data is acquired through an optical power meter and stored in the time sequence database; when any one optical power value in the plurality of optical power acquisition data is lower than a preset threshold value, acquiring a target optical power acquisition moment; determining a target OTDR waveform diagram according to the target optical power acquisition time and the multi-frame OTDR waveform diagram; when the target attenuation step appears in the target OTDR waveform diagram, determining the position of the target attenuation step as the fiber core flashing position.
Description
Technical Field
The invention relates to the technical field of optical fiber detection, in particular to a fiber core flashing judging method, a device, a system and a storage medium.
Background
In daily life, optical fibers are used for long-distance information transmission because the transmission loss of light in the optical fibers is much lower than that of electricity in electric wires, the fiber core is a central area in which most of optical power passes, and the optical cable is a communication cable in which a certain number of optical fibers form a cable core in a certain manner to realize optical signal transmission. When the optical fiber connector is in poor contact, signal transmission is possibly unstable, great influence can be caused on users needing to stabilize signals for service, such as the phenomena of offline, delay and the like can be easily caused when the optical fiber signals of game users are unstable, live broadcast users cannot conduct operations such as ordering and the like when the optical fiber signals are unstable, user experience is seriously influenced, customer complaints and user loss are easily caused, and huge economic losses are brought to related companies.
The waveform of the flashover time is difficult to collect by the traditional OTDR, and the flashover problem seriously affects the use experience of users, so that the positioning of the flashover position of the optical fiber is a technical problem to be solved in the prior art.
Disclosure of Invention
The invention provides a fiber core flashing judging method, a device, a system and a storage medium, which are used for solving the problem that an OTDR (Optical time-domain reflectometer, OTDR) acquisition speed is low and waveforms at flashing moment cannot be accurately grasped for positioning.
The first aspect of the present invention provides a core flashing method comprising: acquiring a multi-frame OTDR waveform chart and a plurality of optical power acquisition data stored in a time sequence database, wherein the multi-frame OTDR waveform chart is acquired through an OTDR device and stored in the time sequence database, and the plurality of optical power acquisition data is acquired through an optical power meter and stored in the time sequence database; when any one optical power value in the plurality of optical power acquisition data is lower than a preset threshold value, acquiring a target optical power acquisition moment; determining a target OTDR waveform diagram according to the target optical power acquisition time and the multi-frame OTDR waveform diagram; when the target attenuation step appears in the target OTDR waveform diagram, the abscissa value of the target attenuation step is determined as the fiber core flash position.
In a possible implementation manner, before acquiring the multi-frame OTDR waveform map and the plurality of optical power acquisition data stored in the timing database, the method further includes: the OTDR equipment is controlled to continuously emit test optical signals to the optical cable to be tested, and reflected signals of the test optical signals are sampled to obtain multi-frame OTDR oscillograms and corresponding OTDR acquisition moments; controlling an optical power meter to receive a test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments; and storing the multi-frame OTDR waveform diagram, the OTDR acquisition time, the plurality of optical power values and the optical power acquisition time into a time sequence database.
In a possible implementation manner, controlling the OTDR device to continuously transmit a test optical signal to an optical cable to be tested, and sampling a reflected signal of the test optical signal to obtain a multi-frame OTDR waveform chart and a corresponding OTDR acquisition time, including: setting test parameters of OTDR equipment; controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested according to the test parameters; and receiving the reflected signals of the test optical signals according to the preset sampling frequency, obtaining a plurality of frames of OTDR waveform diagrams and recording corresponding OTDR acquisition time.
In a possible implementation manner, determining the target OTDR waveform map according to the target optical power acquisition time and the multi-frame OTDR waveform map includes: screening a plurality of frames of OTDR waveform diagrams according to the target optical power acquisition time to obtain a plurality of frames of candidate OTDR waveform diagrams; acquiring multi-frame optical power acquisition data in the target optical power acquisition time; and determining a target OTDR waveform diagram according to the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform diagram.
In a possible implementation, determining the target OTDR waveform map from the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform map includes: performing flash analysis on multi-frame optical power acquisition data to obtain a first analysis result; carrying out waveform analysis on the multi-frame candidate OTDR waveform diagram to obtain a second analysis result; and determining a target OTDR waveform diagram according to the first analysis result and the second analysis result.
In one possible implementation, when the target attenuation step occurs in the target OTDR waveform diagram, determining the abscissa value of the target attenuation step as the core-flare position includes: determining a target attenuation step according to the target OTDR waveform diagram and a preset reference OTDR waveform diagram; and reading the abscissa value of the target attenuation step, and determining the abscissa value as the fiber core flashing position.
In a possible implementation, after determining the abscissa value of the target attenuation step as the core flash position when the target attenuation step occurs in the target OTDR waveform diagram, the method further includes: and determining a fiber core positioning result according to the fiber core flashing position and a preset route map.
In a second aspect, the invention provides a core flashing positioning device comprising: the acquisition module is used for acquiring a plurality of frames of OTDR waveform diagrams and a plurality of optical power acquisition data stored in the time sequence database, wherein the plurality of frames of OTDR waveform diagrams are acquired through OTDR equipment and stored in the time sequence database, and the plurality of optical power acquisition data are acquired through an optical power meter and stored in the time sequence database; the processing module is used for acquiring target optical power acquisition time when any optical power value in the plurality of optical power acquisition data is lower than a preset threshold value; the determining module is used for determining the target OTDR waveform diagram according to the target optical power acquisition time and the multi-frame OTDR waveform diagram; and the analysis module is used for determining the abscissa value of the target attenuation step as the fiber core flashing position when the target attenuation step appears in the target OTDR waveform diagram.
In one possible embodiment, a core flashing positioning device further comprises: the OTDR acquisition module is used for controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested, and sampling reflected signals of the test optical signals to obtain multi-frame OTDR waveform diagrams and corresponding OTDR acquisition moments; the optical power acquisition module is used for controlling the optical power meter to receive the test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments; and the storage module is used for storing the multi-frame OTDR waveform diagram, the OTDR acquisition time, the plurality of optical power values and the optical power acquisition time into the time sequence database.
In a possible implementation, the OTDR acquisition module is specifically configured to: setting test parameters of OTDR equipment; controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested according to the test parameters; receiving reflected signals of the test optical signals according to a preset sampling frequency, obtaining a plurality of OTDR waveform diagrams and recording corresponding OTDR acquisition time
In one possible implementation, the determining module includes: the screening unit is used for screening the multi-frame OTDR waveform diagrams according to the target optical power acquisition time to obtain multi-frame candidate OTDR waveform diagrams; the acquisition unit is used for acquiring multi-frame optical power acquisition data in the target optical power acquisition time; and the determining unit is used for determining the target OTDR waveform diagram according to the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform diagram.
In a possible embodiment, the determining unit is specifically configured to: performing flash analysis on multi-frame optical power acquisition data to obtain a first analysis result; carrying out waveform analysis on the multi-frame candidate OTDR waveform diagram to obtain a second analysis result; and determining a target OTDR waveform diagram according to the first analysis result and the second analysis result.
In a possible embodiment, the analysis module is specifically configured to: determining a target attenuation step according to the target OTDR waveform diagram and a preset reference OTDR waveform diagram; and reading the abscissa value of the target attenuation step, and determining the abscissa value as the fiber core flashing position.
In one possible embodiment, the core flashing device further comprises: and the positioning module is used for determining a fiber core positioning result according to the fiber core flashing position and a preset route map.
A third aspect of the invention provides a core flash positioning system comprising: the OTDR equipment is used for continuously transmitting the test optical signals to the optical cable to be tested, sampling the reflected signals of the test optical signals, obtaining a multi-frame OTDR oscillogram and corresponding OTDR acquisition time, and transmitting the multi-frame OTDR oscillogram and the corresponding OTDR acquisition time to the terminal; the optical power meter is used for receiving the test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments, and the plurality of optical power acquisition data comprise the plurality of optical power values and corresponding optical power acquisition moments are sent to the terminal; a terminal for performing a core flash bit method as claimed in any one of the above.
A fourth aspect of the invention provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the above-described core-flash-positioning method.
In the technical scheme provided by the invention, the optical power meter captures the flashing moment, the target OTDR waveform diagram is determined based on multi-frame optical power acquisition data of the flashing moment, and the flashing position is determined through the target OTDR waveform diagram, so that the fiber core flashing positioning is realized.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a core flash determination method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a target attenuation step of a target OTDR waveform diagram in an embodiment of the present invention;
FIG. 3 is a schematic diagram of another embodiment of a core flash determination method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of a core flashing bit device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another embodiment of a core flashing bit device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating operation of a core flashing sense bit system in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram of a terminal embodiment of a core flashing bit system in an embodiment of the invention.
Detailed Description
The invention provides a fiber core flashing judging method, device, system and storage medium, which are used for rapidly capturing OTDR waveforms at fiber core flashing moment and determining fiber core flashing positions.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For ease of understanding, a specific flow of an embodiment of the present invention is described below with reference to fig. 1, and one embodiment of a core flashing method according to an embodiment of the present invention includes:
101. and acquiring a multi-frame OTDR waveform chart and a plurality of optical power acquisition data stored in a time sequence database, wherein the multi-frame OTDR waveform chart is acquired through an OTDR device and stored in the time sequence database, and the plurality of optical power acquisition data is acquired through an optical power meter and stored in the time sequence database.
It will be appreciated that the execution body of the present invention may be a core flashing device, or may be a core flashing system or server, and is not limited in this particular context. The embodiments of the present invention will be described by taking a core-flash-determination system as an execution body.
The fiber core flashing position determining system acquires a multi-frame OTDR waveform chart and a plurality of optical power acquisition data stored in a time sequence database to perform flashing analysis. The fiber core flashing judging and positioning system comprises an OTDR device, an optical power meter and a terminal, wherein the terminal comprises a memory and a processor, and a time sequence database is stored in the memory.
The OTDR equipment is connected to one end of the optical cable to be tested, is used for continuously transmitting test optical signals to the optical cable to be tested, sampling reflected signals of the test optical signals, sending and storing a multi-frame OTDR waveform chart obtained by sampling and corresponding OTDR acquisition time based on a message queue telemetry transmission (Message Queuing Telemetry Transport, MQTT) protocol in a time sequence database, wherein the waveform sampling speed of the OTDR equipment is 3 frames/second to 8 frames/second, namely, the waveform which stably appears at the highest speed of the OTDR equipment is only sampled to be higher than 125 milliseconds, and the general appearance of a flash phenomenon is 50 milliseconds, so that the OTDR equipment cannot capture the waveform which appears of the flash phenomenon. The plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments, the acquisition speed of the optical power meter can be set to 1024 frames/second, each optical power acquisition data comprises 1024 frames of optical power acquisition data, namely after the target optical power acquisition moment is determined, the accurate moment of the occurrence of the flash phenomenon can be determined by acquiring 1024 frames of optical power acquisition data contained in the target optical power acquisition moment.
The time sequence database can receive and store multi-frame OTDR waveform diagrams and corresponding OTDR acquisition time, a plurality of optical power values and corresponding optical power acquisition time through an MQTT protocol, and can correlate the multi-frame OTDR waveform diagrams and the plurality of optical power values through the OTDR acquisition time and the optical power acquisition time, so that a target OTDR waveform diagram is determined by utilizing the optical power acquisition time.
102. And when any one optical power value in the plurality of optical power acquisition data is lower than a preset threshold value, acquiring a target optical power acquisition moment.
And the fiber core flashing judging and positioning system determines a threshold value according to the actual environment of the optical cable to be tested, and when any one of the optical power acquisition data is lower than a preset threshold value, the optical cable to be tested is judged to have flashing, and the flashing moment is determined as the target optical power acquisition moment. The target optical power acquisition time comprises multi-frame optical power acquisition data, and the accurate capture of the flash time can be performed by determining the corresponding frame number of the optical power value lower than the threshold value.
For example, the fiber core flashing position determining system detects that the optical power value of the optical cable to be tested at the t second (t is a positive integer greater than zero) is a, and is lower than the threshold value b, namely the t second is determined as the target optical power acquisition time.
103. And determining the target OTDR waveform according to the target optical power acquisition time and the multi-frame OTDR waveform.
And the fiber core flashing position determining system determines a target OTDR waveform diagram according to the target optical power acquisition time and the multi-frame OTDR waveform diagram. In a possible implementation manner, the fiber core flashing judging and positioning system screens multiple frames of OTDR wave patterns through the target optical power acquisition time to obtain multiple frames of candidate OTDR wave patterns, determines the target frame optical power acquisition data with flashing through multiple frames of optical power acquisition data at the target optical power acquisition time, screens the multiple frames of candidate OTDR wave patterns through the target frame optical power acquisition data to obtain the target OTDR wave patterns.
For example, the core flash positioning system retrieves M frames of optical power acquisition data within the t second, the acquisition frame rate of the optical power meter being M frames/second (M>1000, M is a positive integer), the sampling frame rate of the OTDR device is N frames/second (N is a positive integer, the value thereof is generally smaller than 8), the optical power value a of the mth frame (M is smaller than or equal to M, M is a positive integer) is determined to be lower than the threshold value b, and the acquisition time corresponding to the mth frame is the mth frameSecond, the core-flashing-bit system will be +.>The second OTDR waveform is determined as the target OTDR waveform, or the +.>And determining the OTDR waveform diagram of the multi-frame candidate OTDR waveform diagram in seconds.
104. When the target attenuation step appears in the target OTDR waveform diagram, the abscissa value of the target attenuation step is determined as the fiber core flash position.
The fiber core flashing position determining system determines the fiber core flashing position according to a target OTDR waveform, wherein the target OTDR waveform takes the fiber distance as an abscissa and the fiber loss value as an ordinate, when no flashing phenomenon exists, the OTDR waveform is an inclined waveform curve, a reflection peak (the position shown in fig. 2B) exists at the tail end of the fiber and is used for indicating the fiber distance corresponding to the fiber loss value, when the flashing phenomenon exists in the target OTDR waveform, a target attenuation step (the position shown in fig. 2A) appears in the waveform of the target OTDR waveform, the attenuation step is also called a step obstacle, reflected light power attenuation caused by factors such as poor contact of the fiber corresponding to the fiber position, micro cracks and the like occurs, the fiber loss value of the fiber distance is represented as a step-type decline from the OTDR waveform, in this embodiment, the target attenuation step refers to the step-type decline condition caused by the flashing phenomenon, the distance of the fiber core flashing position can be determined by reading the corresponding abscissa value at the attenuated target step, the attenuation step-type fiber loss value can be determined by comparing the target OTDR waveform with a preset reference OTDR waveform, when the attenuation step-type is larger than the preset fiber loss value, and the conventional waveform is calculated when the step-type of the fiber loss value is larger than the preset in the optical fiber level.
In this embodiment, the reference OTDR waveform is an OTDR waveform captured when the optical cable to be tested does not have a flashover phenomenon, the sampling parameter of the corresponding OTDR device, the sampled optical cable to be tested and the target OTDR waveform are the same, the optical power acquisition time can be determined by acquiring the optical power acquisition data higher than the threshold value, the OTDR waveform at the corresponding OTDR acquisition time is determined as the reference OTDR waveform, or a continuous multi-frame OTDR waveform can be compared, and when waveforms of the continuous multi-frame OTDR waveform are the same, one frame is selected as the reference OTDR waveform.
In this embodiment, the conventional optical cable event includes a reflection event and a non-reflection event, which are represented on the OTDR waveform chart by various reflection peaks, noise waveforms, waveform slope changes, sudden drop of optical fiber loss values, and the like, where the conventional optical cable event may be caused by a connector, an optical fiber fusion point, a breaking point, an optical fiber over-bending on the optical cable to be tested, or may be caused by improper setting of test parameters of the OTDR device, and may be improved by correcting the test parameters of the OTDR device, if the conventional optical cable event is caused by a fault of the optical cable to be tested, the same waveform may appear in the multi-frame OTDR waveform chart, and the fault location of the conventional optical cable event may be directly performed by the OTDR device without the change of sampling time of the OTDR device, so that the position where the flash phenomenon may be accurately located may be filtered out by the conventional optical cable event of the target OTDR waveform chart.
In the embodiment of the invention, the optical power meter is used for continuously collecting the test optical signals passing through the optical cable to be tested, the target optical power collection time of the fiber core flashover is determined, the target optical power collection time is further refined according to the multi-frame optical power collection data, the sensitivity of the fiber core flashover judging positioning system to the flashover phenomenon is improved, the corresponding OTDR waveform is accurately captured, and therefore the fiber core flashover position is positioned.
Referring to fig. 3, another embodiment of the core flashing bit method according to the present invention includes:
301. and acquiring a multi-frame OTDR waveform chart and a plurality of optical power acquisition data stored in a time sequence database, wherein the multi-frame OTDR waveform chart is acquired through an OTDR device and stored in the time sequence database, and the plurality of optical power acquisition data is acquired through an optical power meter and stored in the time sequence database.
Step 301 is similar to step 101 and will not be described again here.
Before step 301, the method further includes controlling the OTDR device to continuously transmit a test optical signal to the optical cable to be tested, and sampling a reflected signal of the test optical signal to obtain a multi-frame OTDR waveform chart and a corresponding OTDR acquisition time; controlling an optical power meter to receive a test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments; and storing the multi-frame OTDR waveform diagram, the OTDR acquisition time, the plurality of optical power values and the optical power acquisition time into a time sequence database.
In a possible implementation manner, the fiber core flashing positioning system controls the OTDR device to continuously transmit a test optical signal to an optical cable to be tested, and samples a reflected signal of the test optical signal to obtain a multi-frame OTDR waveform diagram and a corresponding OTDR acquisition time, including: setting test parameters of the OTDR equipment, wherein the test parameters of the OTDR equipment comprise, but are not limited to, pulse width, signal wavelength, test channels and the like, and the reliability of the sampling of the OTDR equipment can be improved by setting the test parameters according to actual conditions; controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested according to the test parameters; and receiving the reflected signals of the test optical signals according to the preset sampling frequency, obtaining a plurality of frames of OTDR waveform diagrams and recording corresponding OTDR acquisition time.
302. And when any one optical power value in the plurality of optical power acquisition data is lower than a preset threshold value, acquiring a target optical power acquisition moment.
The fiber core flashing judging and positioning system screens the plurality of optical power acquisition data, and when any one of the plurality of optical power acquisition data is lower than a preset threshold value, the phenomenon of flashing can be judged to occur. The threshold value can be determined according to the actual environment, and when the optical power value is lower than the threshold value, the corresponding optical power acquisition time is determined as the target optical power acquisition time.
303. And determining the target OTDR waveform according to the target optical power acquisition time and the multi-frame OTDR waveform.
The fiber core flashing judging and positioning system screens a plurality of frames of OTDR waveform diagrams according to the target optical power acquisition time to obtain a plurality of frames of candidate OTDR waveform diagrams; acquiring multi-frame optical power acquisition data in the target optical power acquisition time; and determining a target OTDR waveform diagram according to the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform diagram.
In a possible implementation, determining the target OTDR waveform map from the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform map includes: performing flash analysis on the multi-frame optical power acquisition data to obtain a first analysis result, wherein the first analysis result is whether a flash phenomenon exists; carrying out waveform analysis on the multi-frame candidate OTDR waveform graph to obtain a second analysis result, wherein the second analysis result is whether a flash phenomenon exists or not; and determining a target OTDR waveform chart according to the first analysis result and the second analysis result, and determining the corresponding candidate OTDR waveform chart as the target OTDR waveform chart when the first analysis result and the second analysis result are all the flash phenomenon.
In a possible implementation, determining the target OTDR waveform map from the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform map includes: performing flash analysis on the multi-frame optical power acquisition data to obtain a target frame number, wherein the target frame number is the frame number corresponding to the occurrence of the flash phenomenon at the time of acquisition of the target optical power; and screening multi-frame candidate OTDR waveform diagrams according to the acquisition time corresponding to the target frame number and a set acquisition time range to obtain a target OTDR waveform diagram, wherein the acquisition time range is determined according to the sampling frame rate of the OTDR equipment, so that the waveform of the flash phenomenon is ensured to be captured by the OTDR equipment.
304. When the target attenuation step appears in the target OTDR waveform diagram, the abscissa value of the target attenuation step is determined as the fiber core flash position.
The fiber core flashing judging and positioning system carries out waveform analysis on the target OTDR waveform diagram; when the target attenuation step appears in the target OTDR waveform diagram, determining the position of the attenuation step as the fiber core flashing position.
In one possible implementation, the fiber core flashing position determining system determines a target attenuation step according to the target OTDR waveform diagram and a preset reference OTDR waveform diagram; and reading the abscissa value of the target attenuation step, and determining the abscissa value as the fiber core flashing position.
In a possible implementation manner, the fiber core flashing position determining system performs waveform analysis on the reference OTDR waveform diagram to obtain an abscissa value corresponding to a conventional optical cable event, wherein the conventional optical cable event can be one or more than one; and processing the target OTDR waveform according to the abscissa value corresponding to the conventional optical cable event to obtain a processed target OTDR waveform, calculating the difference value of the fiber loss values of adjacent abscissas in the processed target OTDR waveform, and determining the fiber core flashing position when the difference value is larger than a preset range, namely when the fiber loss value shows step-type decline.
It should be further noted that, the processing of the target OTDR waveform according to the abscissa value corresponding to the conventional optical cable event is to filter the influence of the waveform of the conventional optical cable event on the subsequent flashover waveform analysis, where the step may be directly processed by the fiber core flashover positioning system, and after determining the fiber core flashover position, the fiber core flashover positioning system may display and/or mark the fiber core flashover position and the conventional optical cable event together in the target OTDR waveform, or may display and/or mark the fiber core flashover position separately in the target OTDR waveform.
305. And determining a fiber core positioning result according to the fiber core flashing position and a preset route map.
The fiber core flashing judging and positioning system acquires a route line map of the optical cable to be tested, wherein the route line map is recorded optical cable route line information when the optical cable to be tested is paved, the route line map comprises a plurality of route points, the optical cable position where the flashing phenomenon is easy to occur is an optical fiber joint, and an actual positioning result where the flashing phenomenon occurs can be obtained by positioning the route points. Searching in a route map according to the fiber core flashing position to obtain a target route point; the target routing point is determined as the core positioning result.
In the embodiment of the invention, the optical power meter is used for continuously collecting the test optical signals passing through the optical cable to be tested, the target optical power collection time of the fiber core flashover is determined, the multi-frame optical power collection data of the target optical power collection time are used for further thinning the target optical power collection time according to the multi-frame optical power collection data, the sensitivity of the fiber core flashover judging and positioning system to the flashover phenomenon is improved, the corresponding OTDR waveform is accurately captured, so that the fiber core flashover position is positioned, and the actual positioning result of the flashover phenomenon is further determined by combining the fiber core flashover position with an actual optical cable route map.
The method for determining the core flash according to the embodiment of the present invention is described above, and the device for determining the core flash according to the embodiment of the present invention is described below, referring to fig. 4, and one embodiment of the device for determining the core flash according to the embodiment of the present invention includes:
an acquiring module 401, configured to acquire a plurality of frames of OTDR waveform graphs and a plurality of optical power acquisition data stored in a timing database, where the plurality of frames of OTDR waveform graphs are acquired by an OTDR device and stored in the timing database, and the plurality of optical power acquisition data are acquired by an optical power meter and stored in the timing database;
a processing module 402, configured to obtain a target optical power acquisition time when any one of the optical power acquisition data is lower than a preset threshold value;
a determining module 403, configured to determine a target OTDR waveform according to the target optical power acquisition time and the multi-frame OTDR waveform;
an analysis module 404, configured to determine an abscissa value of the target attenuation step as the core flash position when the target attenuation step appears in the target OTDR waveform diagram.
In the embodiment of the invention, the optical power meter is used for continuously collecting the test optical signals passing through the optical cable to be tested, the target optical power collection time of the fiber core flashover is determined, the target optical power collection time is further refined according to the multi-frame optical power collection data, the sensitivity of the fiber core flashover judging positioning system to the flashover phenomenon is improved, the corresponding OTDR waveform is accurately captured, and therefore the fiber core flashover position is positioned.
Referring to fig. 5, another embodiment of the core flashing device according to the present invention includes:
an acquiring module 401, configured to acquire a plurality of frames of OTDR waveform graphs and a plurality of optical power acquisition data stored in a timing database, where the plurality of frames of OTDR waveform graphs are acquired by an OTDR device and stored in the timing database, and the plurality of optical power acquisition data are acquired by an optical power meter and stored in the timing database;
a processing module 402, configured to obtain a target optical power acquisition time when any one of the optical power acquisition data is lower than a preset threshold value;
a determining module 403, configured to determine a target OTDR waveform according to the target optical power acquisition time and the multi-frame OTDR waveform;
an analysis module 404, configured to determine an abscissa value of the target attenuation step as the core flash position when the target attenuation step appears in the target OTDR waveform diagram.
Optionally, the core flashing positioning device further comprises:
the OTDR acquisition module 405 is configured to control the OTDR device to continuously transmit a test optical signal to the optical cable to be tested, and sample a reflected signal of the test optical signal, so as to obtain a multi-frame OTDR waveform chart and a corresponding OTDR acquisition time;
the optical power acquisition module 406 is configured to control the optical power meter to receive the test optical signal, so as to obtain a plurality of optical power acquisition data, where the plurality of optical power acquisition data includes a plurality of optical power values and corresponding optical power acquisition moments;
the storage module 407 is configured to store the multi-frame OTDR waveform chart, the OTDR acquisition time, the plurality of optical power values, and the optical power acquisition time in the time sequence database.
Optionally, the OTDR acquisition module 405 is specifically configured to: setting test parameters of OTDR equipment; controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested according to the test parameters; receiving reflected signals of the test optical signals according to a preset sampling frequency, obtaining a plurality of OTDR waveform diagrams and recording corresponding OTDR acquisition time
Optionally, the determining module 403 includes:
a screening unit 4031, configured to screen the multiple frame OTDR waveform diagrams according to the target optical power acquisition time, to obtain multiple frame candidate OTDR waveform diagrams;
an acquiring unit 4032, configured to acquire multi-frame optical power acquisition data within a target optical power acquisition time;
a determining unit 4033, configured to determine a target OTDR waveform map according to the multiple frames of optical power acquisition data and the multiple frames of candidate OTDR waveform maps.
Optionally, the determining unit 4033 is specifically configured to: performing flash analysis on multi-frame optical power acquisition data to obtain a first analysis result; carrying out waveform analysis on the multi-frame candidate OTDR waveform diagram to obtain a second analysis result; and determining a target OTDR waveform diagram according to the first analysis result and the second analysis result.
Optionally, the analysis unit 404 is specifically configured to: determining a target attenuation step according to the target OTDR waveform diagram and a preset reference OTDR waveform diagram; and reading the abscissa value of the target attenuation step, and determining the abscissa value as the fiber core flashing position.
Optionally, the core flashing positioning device further comprises: the positioning module 408 is configured to determine a core positioning result according to the core flashover position and a preset routing map.
In the embodiment of the invention, the optical power meter is used for continuously collecting the test optical signals passing through the optical cable to be tested, the target optical power collection time of the fiber core flashover is determined, the multi-frame optical power collection data of the target optical power collection time are used for further thinning the target optical power collection time according to the multi-frame optical power collection data, the sensitivity of the fiber core flashover judging and positioning system to the flashover phenomenon is improved, the corresponding OTDR waveform is accurately captured, so that the fiber core flashover position is positioned, the actual positioning result of the flashover phenomenon is further determined by combining the fiber core flashover position with the actual optical cable route map, and the fiber core positioning result is convenient for a worker to overhaul.
The core flashing positioning device in the embodiment of the present invention is described in detail above in fig. 4 and 5 from the point of view of the modularized functional entity, and the core flashing positioning system in the embodiment of the present invention is described in detail below from the point of view of hardware processing.
The invention provides a fiber core flashing judging and positioning system, and fig. 6 is a schematic operation diagram of the fiber core flashing judging and positioning system according to an embodiment of the invention.
The core flash-out positioning system includes an OTDR device 610, an optical power meter 620, and a terminal 630.
The OTDR device 610 is connected to one end of the optical cable to be tested, and is configured to continuously transmit a test optical signal on the optical cable to be tested, sample a reflected signal of the test optical signal, obtain a multi-frame OTDR waveform chart and a corresponding OTDR acquisition time, and send the multi-frame OTDR waveform chart and the corresponding OTDR acquisition time to the terminal.
The optical power meter 620 is connected to the other end of the optical cable to be tested, and is configured to receive the test optical signal to obtain a plurality of optical power collection data, where the plurality of optical power collection data includes a plurality of optical power values and corresponding optical power collection times, and send the plurality of optical power collection data to the terminal 630, where the sending manner generally includes transmitting the data to the terminal through a telemetry transmission protocol based on a message queue.
Terminal 630, which comprises a memory 631, a processor 632 and a storage medium 633, wherein the memory 631 may comprise a time series database, wherein the storage medium 633 comprises a series of computer readable instructions, wherein the processor 632 may perform any one of the above-mentioned core flashing method when the computer readable instructions are read, and wherein the terminal 630 may receive data transmitted by the OTDR device 610 and the optical power meter 620 via a message queue telemetry transmission protocol and store the data in the time series database (not shown).
In a possible implementation, the terminal 630 of this embodiment may include one or more processors 632 (central processing units, CPU) and a memory 631, and one or more storage media 633 (e.g. one or more mass storage devices) storing application programs 6331 or data 6332 or an operating system 6333. The storage 631 and the storage medium 633 may be transient storage or persistent storage, and the operating system 6333 may include Windows service, mac OS X, unix, linux, freeBSD, and the like. Still further, a processor 632 may be provided in communication with the storage medium 633, executing a series of instruction operations in the storage medium 633 on the terminal 630, which when executed by the processor, cause the processor to perform the steps of the core-flash-determination-bit method in the embodiments described above.
Terminal 630 can also include one or more power sources 634, one or more wired or wireless network interfaces 635, one or more input/output interfaces 636, and/or one or more. It will be appreciated by those skilled in the art that the terminal structure shown in fig. 7 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The present invention also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, and which may also be a volatile computer readable storage medium, having instructions stored therein which, when executed on a computer, cause the computer to perform the steps of the core flash determining method.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of core flashing bits, the method being applied to a core flashing bit system comprising an OTDR device connected to one end of an optical cable to be tested, an optical power meter connected to the other end of the optical cable to be tested, comprising:
acquiring a multi-frame OTDR waveform chart stored in a time sequence database, an OTDR acquisition time and a plurality of optical power acquisition data corresponding to the multi-frame OTDR waveform chart, wherein the multi-frame OTDR waveform chart is acquired by the OTDR equipment and stored in the time sequence database, the plurality of optical power acquisition data are acquired by the optical power meter and stored in the time sequence database, each optical power acquisition data comprises multi-frame optical power acquisition data, and the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition times;
when any one of the plurality of optical power acquisition data is lower than a preset threshold value, acquiring a target optical power acquisition moment;
determining a target OTDR waveform according to multi-frame optical power acquisition data and multi-frame OTDR waveform in the target optical power acquisition time, wherein the target OTDR waveform is an OTDR waveform corresponding to the occurrence time of the flash phenomenon determined by the multi-frame optical power acquisition data;
when a target attenuation step appears in the target OTDR waveform diagram, determining an abscissa value of the target attenuation step as a fiber core flashing position, wherein the target attenuation step is a flashing phenomenon, so that the fiber loss value in the target OTDR waveform diagram is reduced in a step type;
the determining the target OTDR waveform according to the multi-frame optical power acquisition data and the multi-frame OTDR waveform within the target optical power acquisition time includes:
screening the multi-frame OTDR waveform diagram according to the target optical power acquisition time and the OTDR acquisition time to obtain multi-frame candidate OTDR waveform diagram;
acquiring multi-frame optical power acquisition data in the target optical power acquisition time;
and determining a target OTDR waveform diagram according to the multi-frame optical power acquisition data and the multi-frame candidate OTDR waveform diagram.
2. The method of claim 1, further comprising, prior to said obtaining a plurality of OTDR waveforms stored in said timing database and their corresponding OTDR collection times, a plurality of optical power collection data:
controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested, and sampling reflected signals of the test optical signals to obtain multi-frame OTDR oscillograms and corresponding OTDR acquisition moments;
controlling the optical power meter to receive the test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments;
and storing the multi-frame OTDR waveform diagram, the OTDR acquisition time, the plurality of optical power values and the optical power acquisition time to the time sequence database.
3. The method according to claim 2, wherein the controlling the OTDR device to continuously transmit a test optical signal to the optical cable to be tested and sample a reflected signal of the test optical signal to obtain a multi-frame OTDR waveform diagram and a corresponding OTDR acquisition time, includes:
setting test parameters of the OTDR equipment;
according to the test parameters, controlling the OTDR equipment to continuously emit test optical signals to the optical cable to be tested;
and receiving the reflected signals of the test optical signals according to a preset sampling frequency, obtaining a multi-frame OTDR waveform chart and recording corresponding OTDR acquisition time.
4. The method of claim 1, wherein said determining a target OTDR waveform from said plurality of frames of optical power acquisition data and said plurality of frames of candidate OTDR waveform comprises:
performing flash analysis on the multi-frame optical power acquisition data to obtain a first analysis result;
performing waveform analysis on the multi-frame candidate OTDR waveform graph to obtain a second analysis result;
and when the first analysis result and the second analysis result are all the flash phenomenon, determining a target OTDR waveform diagram from the corresponding candidate OTDR waveform diagrams.
5. The method of claim 1, wherein determining the abscissa value of the target attenuation step as the core flash position when the target attenuation step occurs in the target OTDR waveform map comprises:
determining a target attenuation step according to the target OTDR waveform diagram and a preset reference OTDR waveform diagram;
and reading the abscissa value of the target attenuation step, and determining the abscissa value as the fiber core flashing position.
6. The method according to any one of claims 1-5, characterized by, after said determining an abscissa value of a target attenuation step as a core-flash position when the target attenuation step occurs in the target OTDR waveform, further comprising:
and determining a fiber core positioning result according to the fiber core flashing position and a preset route map.
7. The method of claim 6, wherein determining the core location result based on the core flash location and a pre-set routing map comprises:
acquiring a route line map of an optical cable to be tested, wherein the route line map comprises a plurality of route points;
searching in a route map according to the fiber core flashing position to obtain a target route point;
the target routing point is determined as the core positioning result.
8. A core flashing device, wherein the core flashing device performs the core flashing method of any of claims 1-7, the core flashing device comprising:
the acquisition module is used for acquiring a multi-frame OTDR waveform chart stored in a time sequence database and a plurality of optical power acquisition data, wherein the multi-frame OTDR waveform chart is acquired by the OTDR equipment and stored in the time sequence database, and the plurality of optical power acquisition data is acquired by the optical power meter and stored in the time sequence database;
the processing module is used for acquiring a target optical power acquisition moment when any optical power value in the plurality of optical power acquisition data is lower than a preset threshold value;
the determining module is used for determining a target OTDR waveform diagram according to the target optical power acquisition time and the multi-frame OTDR waveform diagram;
and the analysis module is used for determining the abscissa value of the target attenuation step as the fiber core flashing position when the target attenuation step appears in the target OTDR waveform diagram.
9. A core flashing positioning system, the core flashing positioning system comprising:
the OTDR equipment is used for continuously transmitting test optical signals to the optical cable to be tested, sampling reflected signals of the test optical signals, obtaining a multi-frame OTDR oscillogram and corresponding OTDR acquisition time, and transmitting the multi-frame OTDR oscillogram and the corresponding OTDR acquisition time to the terminal;
the optical power meter is used for receiving the test optical signal to obtain a plurality of optical power acquisition data, wherein the plurality of optical power acquisition data comprise a plurality of optical power values and corresponding optical power acquisition moments, and the plurality of optical power acquisition data comprise the plurality of optical power values and corresponding optical power acquisition moments are sent to the terminal;
a terminal for performing the core flash bit method of any of claims 1-7.
10. A computer readable storage medium having instructions stored thereon, which when read and executed perform the core-flash-position method of any of claims 1-7.
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