CN113595624A - Method for monitoring optical fiber running state - Google Patents
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 56
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- 238000012360 testing method Methods 0.000 claims abstract description 26
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- 230000004927 fusion Effects 0.000 claims description 13
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- 238000009434 installation Methods 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000253 optical time-domain reflectometry Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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Abstract
The application discloses a method for monitoring an optical fiber running state. Wherein, the method comprises the following steps: acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point; acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance; and matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result. The method and the device solve the technical problems of high labor cost and low efficiency caused by judging whether the optical cable has faults or not based on manual detection of the OTDR curve in the related technology.
Description
Technical Field
The application relates to the field of optical fiber monitoring, in particular to a method for monitoring an optical fiber running state.
Background
With the rapid development of optical fiber networks, the complexity of the networks is increasing, and the management and maintenance work of optical fiber physical networks is heavy. The key point of the current network maintenance is to find the fault of the optical fiber network in time and ensure the safety and stability of the optical fiber physical network. Therefore, an optical fiber monitoring system is urgently needed to be established, and optical fiber monitoring, warning, fault analysis, positioning, line maintenance and the like are organically combined together, so that guarantee is provided for safe and efficient operation of an optical fiber network.
In the related art, the detection of the condition of the optical fiber is realized by monitoring the condition of the transmission error rate. The method comprises the steps of firstly setting a threshold value, comparing the error rate with the threshold value, temporarily closing the optical fiber detection system once the error rate exceeds the threshold value, then judging fault information, and firstly manually judging whether the optical cable network has a fault or the transmission equipment has a fault. If the optical cable network has a problem and a fault occurs, the optical cable network is detected through OTDR equipment, a specified optical cable section is tested, and finally, a professional carries out manual analysis on a test curve returned by the OTDR equipment test, so that fault information is judged, and the position of a fault point is determined.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the application provides a method for monitoring an optical fiber running state, which is used for at least solving the technical problems of high labor cost and low efficiency caused by judging whether an optical cable has a fault or not based on an OTDR curve detected manually in the related technology.
According to an aspect of an embodiment of the present application, there is provided a method for monitoring an operating state of an optical fiber, including: acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point; acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance; and matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result.
Optionally, matching the first variation trend of the target graph with the second variation trend of the preset reference graph includes: fitting the target graph to a first straight line graph; acquiring a second line graph corresponding to a preset reference curve graph; and matching the second straight line graph with the first straight line graph, and obtaining corresponding sub-line segments of each predetermined event in the first straight line graph based on target longitudinal axis coordinates of the second straight line graph, wherein the target longitudinal axis coordinates are used for indicating the initial position of each predetermined event.
Optionally, obtaining the operating state of the target optical fiber according to the matching result includes: calculating a first slope of the first straight line at the sub-line segment corresponding to each preset event; acquiring a second slope corresponding to each predetermined event in the second line graph; and determining the state of the target optical fiber according to the difference value of the first slope and the first slope.
Optionally, determining the state of the target optical fiber according to the difference between the first slope and the first slope includes: when the difference is smaller than a preset threshold value, determining that the state of the target optical fiber is the state indicated by the preset event; wherein each predetermined event at least comprises: non-reflective events and reflective events; the non-reflection time is used for indicating that the target optical fiber is bent or an optical fiber fusion joint exists, and the reflection event is used for indicating that the target optical fiber is broken or an optical fiber loose joint exists.
Optionally, after determining that the state of the target optical fiber is the state indicated by the predetermined event when the difference is smaller than the preset threshold, the method further includes: obtaining historical installation information of a target optical cable, wherein the historical installation information comprises: whether an optical fiber fusion joint or an optical fiber loose joint exists in the target optical fiber; and when the historical installation information shows that the target optical cable does not have an optical fiber fusion joint or an optical fiber loose joint, determining that the target optical fiber is bent or broken.
Optionally, obtaining the relative power value according to the optical power value and the initial power value includes: determining a ratio of the optical power value to the initial power value; and determining the relative light power value of the sampling point by the logarithm value of the ratio.
Optionally, obtaining the target graph according to the relative power value and the distance includes: determining the relative power value as a longitudinal axis of a two-dimensional rectangular coordinate system; determining a transverse axis of a two-dimensional rectangular coordinate system as a distance; the curve of the relative power value with the change of the distance is taken as a target curve graph.
According to an aspect of the embodiments of the present application, there is also provided an optical fiber operating condition monitoring apparatus, including: the first acquisition module is used for acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point; the second acquisition module is used for acquiring the propagation time required by the reflection of the scattered light signal propagated by the target optical fiber to the sampling point; the first determining module is used for determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; the third acquisition module is used for acquiring the optical power value of the scattered optical signal and the initial power value of the test light, and obtaining a relative power value according to the optical power value and the initial power value; the second determining module is used for obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance change; and the matching module is used for matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph and obtaining the running state of the target optical fiber according to the matching result.
According to an aspect of the embodiments of the present application, there is also provided a non-volatile storage medium, where the non-volatile storage medium includes a stored program, and the apparatus in which the non-volatile storage medium is located is controlled to perform any one of the monitoring methods for the optical fiber operating state when the program is executed.
According to an aspect of the embodiments of the present application, there is further provided a processor, where the processor is configured to execute a program, where the program executes any one of the methods for monitoring the operating status of the optical fiber when the program is executed.
In the embodiment of the application, a curve matching-based mode is adopted, and a scattered light signal scattered back by transmission of test light of a preset pulse emitted at a sampling point through a target optical fiber is obtained; acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance; the first change trend of the target curve graph is matched with the second change trend of the preset reference curve graph, the running state of the target optical fiber is obtained according to the matching result, and the aim of matching the target curve graph and the reference curve graph based on the change of the relative power along with the distance is fulfilled, so that the technical effect of automatically determining the running state of the target optical cable based on the matching result is achieved, and the technical problems of high labor cost and low efficiency caused by the fact that whether the optical cable has faults or not is judged based on the manual detection of the OTDR curve in the related technology are solved.
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The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic flow chart diagram illustrating an alternative method for monitoring an operational state of an optical fiber according to an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of an alternative pre-set reference profile of the present application;
fig. 3 is a schematic structural diagram of an alternative optical fiber operation status monitoring device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations 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, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
To facilitate better understanding of embodiments related to the present application by those skilled in the art, the embodiments related to the present application may be explained by referring to technical terms or partial names as follows:
an optical time-domain reflectometer (OTDR) is an instrument for analyzing a measurement curve to know properties such as uniformity, defects, breakage, and coupling of a connector of an optical fiber. The optical fiber attenuation measuring device is manufactured according to the light backscattering and Fresnel backscattering principle, the attenuation information is obtained by utilizing backscattering light generated by light propagating in the optical fiber, the optical fiber attenuation measuring device can be used for measuring the optical fiber attenuation, the joint loss, the light fault point positioning, knowing the loss distribution condition of the optical fiber along the length and the like, and the optical fiber attenuation measuring device is an essential tool in the optical cable construction, maintenance and monitoring.
In accordance with an embodiment of the present application, there is provided an embodiment of a method for monitoring an operational state of an optical fiber, where the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer executable instructions, and where a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that illustrated herein.
Fig. 1 is a method for monitoring an operating state of an optical fiber according to an embodiment of the present application, as shown in fig. 1, the method including the steps of:
step S102, acquiring a scattered light signal scattered back by the transmission of test light of a predetermined pulse emitted at a sampling point through a target optical fiber;
step S104, acquiring the propagation time required for the scattered light signal propagated by the target optical fiber to be reflected to a sampling point;
step S106, determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time;
step S108, acquiring an optical power value of the scattered light signal and an initial power value of the test light, and obtaining a relative power value according to the optical power value and the initial power value;
step S110, obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance change;
and step S112, matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result.
In the monitoring method of the light running state, a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point is obtained; acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance; the first change trend of the target curve graph is matched with the second change trend of the preset reference curve graph, the running state of the target optical fiber is obtained according to the matching result, and the aim of matching the target curve graph and the reference curve graph based on the change of the relative power along with the distance is fulfilled, so that the technical effect of automatically determining the running state of the target optical cable based on the matching result is achieved, and the technical problems of high labor cost and low efficiency caused by the fact that whether the optical cable has faults or not is judged based on the manual detection of the OTDR curve in the related technology are solved.
In some embodiments of the present application, matching the first variation trend of the target graph with the second variation trend of the preset reference graph includes: fitting the target graph to a first straight line graph; acquiring a second line graph corresponding to a preset reference curve graph; and matching the second straight line graph with the first straight line graph, and obtaining corresponding sub-line segments of each predetermined event in the first straight line graph based on target longitudinal axis coordinates of the second straight line graph, wherein the target longitudinal axis coordinates are used for indicating the initial position of each predetermined event.
In some embodiments of the present application, obtaining the operating state of the target optical fiber according to the matching result includes: calculating a first slope of the first straight line at the sub-line segment corresponding to each preset event; acquiring a second slope corresponding to each predetermined event in the second line graph; and determining the state of the target optical fiber according to the difference value of the first slope and the first slope.
It should be noted that, determining the state of the target optical fiber according to the difference between the first slope and the first slope includes: when the difference is smaller than a preset threshold value, determining that the state of the target optical fiber is the state indicated by the preset event; it should be further noted that each predetermined event at least includes: non-reflective events and reflective events; the non-reflection time is used for indicating that the target optical fiber is bent or an optical fiber fusion joint exists, and the reflection event is used for indicating that the target optical fiber is broken or an optical fiber loose joint exists.
In some embodiments of the present application, when the difference is smaller than the preset threshold, after determining that the state of the target optical fiber is the state indicated by the predetermined event, historical installation information of the target optical fiber cable may be obtained, where the historical installation information includes: whether an optical fiber fusion joint or an optical fiber loose joint exists in the target optical fiber; when the historical installation information shows that the target optical cable does not have the optical fiber fusion joint or the optical fiber loose joint, the target optical fiber is determined to be bent or broken, that is, by determining that the state of the target optical fiber is a non-reflection event, it is determined that the target optical fiber cable is bent or an optical fiber fusion splice exists, by acquiring historical installation information, reflection events caused by the existence of the optical fiber fusion splices can be eliminated, and if the optical fiber fusion splices do not exist, the optical fiber bending of the target optical cable can be determined, similarly, the optical fiber breakage or the existence of the optical fiber loose joint of the target optical cable can be determined by determining the state of the target optical fiber as a reflection event, and through acquiring historical installation information, non-reflection events caused by the existence of the optical fiber loose joint can be eliminated, and if the optical fiber loose joint does not exist, the target optical cable can be determined to be broken.
In some optional embodiments of the present application, the relative power value may be obtained according to the optical power value and the initial power value by the following steps: determining a ratio of the optical power value to the initial power value; and determining the relative light power value of the sampling point by the logarithm value of the ratio.
In some embodiments of the present application, obtaining a target graph according to the relative power value and the distance includes: determining the relative power value as a longitudinal axis of a two-dimensional rectangular coordinate system; determining a transverse axis of a two-dimensional rectangular coordinate system as a distance; the curve of the relative power value with the change of the distance is taken as a target curve graph.
Fig. 2 is an alternative preset reference graph of the present application, as shown in fig. 2, the preset reference graph includes:
(1) blind areas: the measurement of the fiber had a blind spot at the beginning, which was caused by the strong fresnel reflection at the beginning of the fiber.
(2) Normal attenuation region of the optical fiber: in the light traveling process, due to factors such as impurities and bubbles in the optical fiber, the transmission energy of the light is lost as scattering, and due to the rayleigh scattering effect, the power of a backscattered signal transmitted back from the optical fiber is attenuated according to the regular rule of the normal attenuation coefficient of the optical fiber to form a region, and the ordinate of the curve is the optical power db value, so that the curve is represented as a straight line which uniformly drops with a certain slope.
(3) Non-reflective events: when an optical fiber has a fusion splice or is bent, the attenuation of the optical fiber rapidly decreases, and a relatively large attenuation occurs at the position of the occurrence of the event.
(4) Reflection events: at the position of the optical fiber loose joint or the optical fiber breakage, a relatively large reflection peak is formed due to relatively large Fresnel reflection, and meanwhile, relatively large attenuation is also realized.
(5) Fiber end: larger Fresnel reflection also occurs at the end of the fiber, so there is also a higher reflected pulse, and at the same time, since the fiber has reached the end, the noise interference is larger, so there is finally a section of noise jitter area.
It should be noted that the preset reference curve graph includes a plurality of distance curve graphs, for example, a preset reference curve corresponding to 1KM, a preset reference curve corresponding to 5KM, a preset reference curve corresponding to 10KM, and the like, and it should be noted that the distance may be adaptively adjusted according to a distance between the sampling point and the end of the target optical fiber.
Fig. 3 is a monitoring apparatus of an optical fiber operating state according to an embodiment of the present application, as shown in fig. 3, the monitoring apparatus including:
the first acquisition module 40 is used for acquiring a scattered light signal which is transmitted and scattered back by the target optical fiber by the test light of a predetermined pulse emitted at the sampling point;
a second obtaining module 42, configured to obtain propagation time required for a scattered light signal propagated through the target optical fiber to be reflected to a sampling point;
a first determining module 44, configured to determine a distance between the sampling point and the end of the target optical fiber according to the required propagation time;
a third obtaining module 46, configured to obtain an optical power value of the scattered light signal and an initial power value of the test light, and obtain a relative power value according to the optical power value and the initial power value;
a second determining module 48, configured to obtain a target graph according to the relative power value and the distance, where the target graph is used to indicate a curve of the relative power value as the distance changes;
and the matching module 50 is configured to match the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtain the operating state of the target optical fiber according to a matching result.
In the monitoring device for the light running state, a first acquisition module 40 is used for acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point; a second obtaining module 42, configured to obtain propagation time required for a scattered light signal propagated through the target optical fiber to be reflected to a sampling point; a first determining module 44, configured to determine a distance between the sampling point and the end of the target optical fiber according to the required propagation time; a third obtaining module 46, configured to obtain an optical power value of the scattered light signal and an initial power value of the test light, and obtain a relative power value according to the optical power value and the initial power value; a second determining module 48, configured to obtain a target graph according to the relative power value and the distance, where the target graph is used to indicate a curve of the relative power value as the distance changes; the matching module 50 is configured to match the first variation trend of the target graph with the second variation trend of the preset reference graph, and obtain the operating state of the target optical fiber according to the matching result, so as to achieve the purpose of matching the target graph and the reference graph based on the variation of the relative power along with the distance, thereby achieving the technical effect of automatically determining the operating state of the target optical cable based on the matching result, and further solving the technical problems of high labor cost and low efficiency caused by manually detecting the OTDR curve and further judging whether the optical cable has a fault in the related art.
According to an aspect of the embodiments of the present application, there is also provided a non-volatile storage medium, where the non-volatile storage medium includes a stored program, and the apparatus in which the non-volatile storage medium is located is controlled to perform any one of the monitoring methods for the optical fiber operating state when the program is executed.
Specifically, the storage medium is used for storing program instructions for executing the following functions, and the following functions are realized:
acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point;
acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance; and matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result.
According to an aspect of the embodiments of the present application, there is further provided a processor, where the processor is configured to execute a program, where the program executes any one of the methods for monitoring the operating status of the optical fiber when the program is executed.
Specifically, the processor is configured to call a program instruction in the memory, and implement the following functions:
acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point; acquiring the propagation time required by reflecting the scattered light signal propagated by the target optical fiber to a sampling point; determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time; acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value; obtaining a target curve graph according to the relative power value and the distance, wherein the target curve graph is used for indicating a curve of the relative power value changing along with the distance; and matching the first variation trend of the target curve graph with the second variation trend of the preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A method of monitoring the operational status of an optical fiber, comprising:
acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point;
acquiring the propagation time required for the scattered light signal propagated through the target optical fiber to be reflected to the sampling point;
determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time;
acquiring an optical power value of the scattered light signal and an initial power value of the test light, and acquiring a relative power value according to the optical power value and the initial power value;
obtaining a target graph according to the relative power value and the distance, wherein the target graph is used for indicating a curve of the relative power value changing along with the distance;
and matching the first variation trend of the target curve graph with the second variation trend of a preset reference curve graph, and obtaining the running state of the target optical fiber according to the matching result.
2. The method of claim 1, wherein matching the first trend of the target profile with the second trend of a preset reference profile comprises:
fitting the target graph to a first straight line graph;
acquiring a second line graph corresponding to the preset reference curve graph;
and matching the second straight line graph with the first straight line graph, and obtaining a sub-line segment corresponding to each predetermined event in the first straight line graph based on target longitudinal axis coordinates of the second straight line graph, wherein the target longitudinal axis coordinates are used for indicating an initial position of each predetermined event.
3. The method of claim 2, wherein obtaining the operational status of the target optical fiber according to the matching result comprises:
calculating a first slope of the first straight line at the sub-line segment corresponding to each preset event;
acquiring a second slope corresponding to each predetermined event in the second line graph;
and determining the state of the target optical fiber according to the difference value of the first slope and the first slope.
4. The method of claim 3, wherein determining the state of the target fiber from the difference between the first slope and the first slope comprises:
when the difference is smaller than a preset threshold value, determining that the state of the target optical fiber is the state indicated by the preset event;
wherein each predetermined event at least comprises: non-reflective events and reflective events; the non-reflection time is used for indicating that the target optical fiber is bent or an optical fiber fusion joint exists, and the reflection event is used for indicating that the target optical fiber is broken or an optical fiber loose joint exists.
5. The method of claim 4, wherein after determining that the state of the target optical fiber is the state indicated by the predetermined event when the difference is less than a preset threshold, the method further comprises:
obtaining historical installation information of the target optical cable, wherein the historical installation information comprises: whether the target optical fiber has the optical fiber fusion joint or the optical fiber loose joint;
and when the historical installation information shows that the target optical cable does not have the optical fiber fusion joint or the optical fiber loose joint, determining that the target optical fiber is bent or broken.
6. The method of claim 1, wherein deriving a relative power value from the optical power value and an initial power value comprises:
determining a ratio of the optical power value to the initial power value;
and determining the relative optical power value of the sampling point by the logarithm value of the ratio.
7. The method of claim 1, wherein obtaining a target graph based on the relative power values and the distances comprises:
determining the relative power value as a longitudinal axis of a two-dimensional rectangular coordinate system;
determining the distance as a transverse axis of the two-dimensional rectangular coordinate system;
and taking a curve of the relative power value changing along with the change of the distance as a target curve graph.
8. An optical fiber operational status monitoring device, comprising:
the first acquisition module is used for acquiring a scattered light signal which is transmitted and scattered back by a target optical fiber by test light of a preset pulse emitted at a sampling point;
the second acquisition module is used for acquiring the propagation time required by the scattered light signal propagated through the target optical fiber to reflect to the sampling point;
the first determining module is used for determining the distance between the sampling point and the tail end of the target optical fiber according to the required propagation time;
a third obtaining module, configured to obtain an optical power value of the scattered light signal and an initial power value of the test light, and obtain a relative power value according to the optical power value and the initial power value;
a second determining module, configured to obtain a target graph according to the relative power value and the distance, where the target graph is used to indicate a curve of the relative power value changing with the distance;
and the matching module is used for matching the first variation trend of the target curve graph with the second variation trend of a preset reference curve graph and obtaining the running state of the target optical fiber according to the matching result.
9. A non-volatile storage medium, comprising a stored program, wherein when the program runs, the apparatus in which the non-volatile storage medium is located is controlled to execute the method for monitoring the operating state of the optical fiber according to any one of claims 1 to 7.
10. A processor for executing a program, wherein the program executes the method for monitoring the operational status of an optical fiber according to any one of claims 1 to 7.
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