CN118118090A

CN118118090A - Co-route detection method and device

Info

Publication number: CN118118090A
Application number: CN202211520537.1A
Authority: CN
Inventors: 李川; 秦海明; 汪大勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2024-05-31

Abstract

The embodiment of the application provides a same-route detection method. The method comprises the following steps: and acquiring the first optical fiber characteristic information and the second optical fiber characteristic information, and determining the same-route probability of the first optical fiber and the second optical fiber according to the first optical fiber characteristic information and the second optical fiber characteristic information. The first fiber characteristic information includes a first time, a first space, and first data, and the second fiber characteristic information includes a second time, a second space, and second data. The method accurately detects the same-route probability among different optical fibers by acquiring and analyzing the optical fiber characteristic information comprising time, space and data, thereby determining the same-route section among different optical fibers, being capable of adapting to the dynamic change of the network without manual site construction and improving the service reliability.

Description

Co-route detection method and device

Technical Field

The present application relates to the field of optical communications, and more particularly, to a method and apparatus for co-route detection.

Background

Currently, optical fibers are receiving considerable attention as an important transmission medium in optical communication systems. Wherein, the external resources such as optical cables, pipelines, rod wires and the like are the key points of optical path network management. When the optical cable routes of two service paths exist in the same cable, the same ditch (buried), the same ditch (overhead), the same optical cross box or the joint box, the optical cable routes are called as the same routes.

Because two paths that are routed are closely spaced in physical space, failure of one path is typically accompanied by simultaneous failure of the other path (e.g., two cables in the same trench are broken by an excavator). After the main and standby paths are routed with the segments, the risk of simultaneous interruption is high. When the risk occurs, the active and standby protection is thoroughly disabled, and cannot play a role in protection, so that the reliability and availability of the service are affected.

Therefore, how to detect the same route of multiple light paths is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a same-route identification detection and device which can detect the same route of a plurality of light paths and ensure the service reliability.

In a first aspect, a method for detecting a same route is provided, where first optical fiber characteristic information and second optical fiber characteristic information are obtained, the first optical fiber characteristic information includes a first time, a first space and first data, the second optical fiber characteristic information includes a second time, a second space and second data, the first optical fiber characteristic information corresponds to a first optical fiber, the second optical fiber characteristic information corresponds to a second optical fiber, the first time and the second time belong to a first detection period, and a same route probability of the first optical fiber and the second optical fiber is determined according to the first optical fiber characteristic information and the second optical fiber characteristic information.

According to the scheme provided by the application, the same-route probability among different optical fibers is accurately detected by acquiring and analyzing the optical fiber characteristic information comprising time, space and data, so that the same-route section among different optical fibers can be determined, the manual site construction is not needed, the dynamic change of the network can be self-adapted, and the service reliability is improved.

With reference to the first aspect, in certain implementation manners of the first aspect, a first routing probability P ₁ of the first optical fiber and the second optical fiber in the first detection period satisfies:

P₁＝k₁*f(feature₁,feature₂)

Wherein k ₁ represents the matching degree between the first time and the second time, k ₁≤1,feature₁ is 0-or-less, k is the first data, feature ₂ is the second data, and f represents the similarity between the first data and the second data.

With reference to the first aspect, in certain implementations of the first aspect, when the first co-routing probability is greater than a first threshold, it is determined that the first optical fiber and the second optical fiber have a same route in the first space, and the first space is a same route point of the first optical fiber and the second optical fiber.

With reference to the first aspect, in some implementations of the first aspect, third optical fiber characteristic information and fourth optical fiber characteristic information are acquired, where the third optical fiber characteristic information includes a third time, the first space, and third data, the fourth optical fiber characteristic information includes a fourth time, the first space, and fourth data, the third optical fiber characteristic information corresponds to the first optical fiber, the fourth optical fiber characteristic information corresponds to the second optical fiber, the third time and the fourth time belong to a second detection period, and a second same routing probability of the first optical fiber and the second optical fiber in the second detection period is determined according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

With reference to the first aspect, in some implementations of the first aspect, in a case that the second co-routing probability is greater than the first co-routing probability, the second co-routing probability is determined to be a target co-routing probability of the first optical fiber and the second optical fiber in the first space.

With reference to the first aspect, in some implementations of the first aspect, fifth optical fiber characteristic information and sixth optical fiber characteristic information are obtained, the fifth optical fiber characteristic information includes a fifth time, a third space and fifth data, the fourth optical fiber characteristic information includes a sixth time, a fourth space and sixth data, the fifth optical fiber characteristic information corresponds to the first optical fiber, the sixth optical fiber characteristic information corresponds to the second optical fiber, the fifth time and the sixth time belong to the second detection period, the third space is adjacent to the first space, and a third same routing probability of the first optical fiber and the second optical fiber in the third space is determined according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

With reference to the first aspect, in certain implementation manners of the first aspect, in a case that the third co-routing probability is greater than the first threshold, the first space and the third space are determined to be co-routed segments of the first optical fiber and the second optical fiber.

With reference to the first aspect, in certain implementations of the first aspect, the first data includes one or more of: first vibration data, first temperature data, first stress data, the second data comprising one or more of: second vibration data, second temperature data, second stress data.

In a second aspect, there is provided a co-route detection device, including: the device comprises an acquisition unit, a detection unit and a detection unit, wherein the acquisition unit is used for acquiring first optical fiber characteristic information and second optical fiber characteristic information, the first optical fiber characteristic information comprises first time, first space and first data, the second optical fiber characteristic information comprises second time, second space and second data, the first optical fiber characteristic information corresponds to the first optical fiber, the second optical fiber characteristic information corresponds to the second optical fiber, and the first time and the second time belong to a first detection period. The processing unit is further configured to determine a co-routing probability of the first optical fiber and the second optical fiber according to the first optical fiber characteristic information and the second optical fiber characteristic information.

Alternatively, the acquisition unit may be a transceiver unit.

The transceiver unit may perform the processing of the reception and transmission in the foregoing first aspect, and the processing unit may perform other processing than the reception and transmission in the foregoing first aspect.

In a third aspect, a co-route detection device is provided, comprising a processor, optionally further comprising a memory, the processor being for controlling the transceiver to transceive signals, the memory being for storing a computer program, the processor being for invoking and running the computer program from the memory, such that the central controller or the network device performs the method of any one of the possible implementations of the first aspect or the first aspect.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor or the memory may be separate from the processor.

Optionally, the co-route detection device further comprises a transceiver, which may be specifically a transmitter (transmitter) and a receiver (receiver).

In a fourth aspect, a co-route detection system is provided, comprising: the system comprises a central controller and a plurality of network devices, wherein a same-route management unit is deployed on the central controller, and an optical fiber sensing module is deployed on the network devices, and the same-route management unit and the optical fiber sensing module are used for executing the method in the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a computer program or code which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect.

In a sixth aspect, a chip is provided, comprising at least one processor coupled to a memory for storing a computer program, the processor being adapted to invoke and run the computer program from the memory, such that a co-route detection device on which the chip is mounted performs the method of the first aspect or any of the possible implementations of the first aspect.

The chip may include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data, among other things.

In a seventh aspect, a computer program product is provided, comprising computer program code which, when run, performs the method of the first aspect or any of the possible implementations of the first aspect.

Drawings

Fig. 1 is a schematic cross-sectional view of an optical cable provided by the present application.

Fig. 2 is a schematic diagram of a communication system provided by the present application.

Fig. 3 is a schematic structural diagram of a co-route detection system according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of another co-route detection system according to an embodiment of the present application.

Fig. 5 is a flow chart of a method for detecting the same route according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a scenario of co-route detection provided by an embodiment of the present application.

Fig. 7 is a schematic diagram of matching two optical cable data slices provided by an embodiment of the present application.

Fig. 8 is a schematic diagram of the same route according to an embodiment of the present application.

Fig. 9 is a schematic diagram of a co-routed space-time search provided by an embodiment of the present application.

Fig. 10 is a schematic diagram of a same-route detection device according to an embodiment of the present application.

Fig. 11 is a schematic diagram of another co-route detection device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

To facilitate an understanding of the embodiments of the present application, a brief description of several terms used in connection with the present application will be provided.

1. An optical fiber. An optical fiber is a fiber made of glass or plastic that can be used as a light-conducting tool for transmitting data between transmission devices.

2. An optical cable. A communication cable for communicating large volumes of information by propagating optical signals through its internal fiber core. Generally, as the distance increases, the volume and weight of the optical cable also increase, so that data transmission between devices at a relatively long distance cannot be realized for one optical cable, and it is necessary to splice multiple optical cables. And, a length of optical cable may include one or more optical fibers therein, the one or more optical fibers being externally wrapped with a protective sleeve or the like.

Illustratively, fig. 1 is a schematic view of a cross-section of an optical cable provided by the present application, wherein the optical cable includes a protective sleeve 11, and four optical fibers 12, namely, an optical fiber 1, an optical fiber 2, an optical fiber 3, and an optical fiber 4 in fig. 1, are wrapped inside the protective sleeve 11. In addition, other components such as filler, power cord, etc. are provided in the optical cable, and the present application is described herein with respect to the structural relationship between the optical cable and the optical fiber, and the other components included in the optical cable are not limited.

3. An optical cable section. The adjacent junctions or the portions between junctions in the cable are the units of use of the cable.

4. An optical transport segment path (optical transmission section trail, OTS). Refers to a path between two adjacent sites, wherein the single board of the optical fiber interface units (fiber interface unit, FIU) at two ends is used as a starting and stopping single board.

5. And (3) an optical path. A series of end-to-end cores are the physical route of the optical transport segment path OTS.

6. The optical fiber interface unit FIU. Refers to an optical interface unit on a wavelength division multiplexing (WAVELENGTH DIVISION MULTIPLEXING, WDM) site.

7. And (5) co-cabling. Refers to any two optical paths passing through the same optical cable segment.

8. An optical distribution frame (optical distribution frame, ODF). The method is used for forming and distributing the local side trunk optical cable in the optical fiber communication system, and can conveniently realize connection, distribution and scheduling of optical fiber lines.

9. And (5) light cross boxes. The optical cable cross-connecting box can also be called as a passive device, and is used for dividing a large-logarithmic optical cable into a plurality of small-logarithmic optical cables in different directions through the optical cable cross-connecting box.

10. And a connector box. May also be referred to as a fiber box for connecting lengths of fiber optic cable together.

11. Distributed optical fiber sensing. The distributed optical fiber sensor is a sensor which adopts a unique distributed optical fiber detection technology to measure or monitor the spatial distribution and time-dependent change information along an optical fiber transmission path. The sensing optical fibers are distributed along the field, so that the spatial distribution of the measured field and the time-dependent change information can be obtained simultaneously.

The distributed optical fiber sensor can realize the sensing technology of vibration and sound field continuous distributed detection. The method utilizes the characteristic that coherent Rayleigh scattering excited by a narrow linewidth laser in an optical fiber is highly sensitive to strain change, and combines the reflectometer principle to sense the environmental vibration and sound field information interacted with the optical fiber in a long distance with high space-time precision.

Exemplary, fiber-optic-sensing perceptible scene features include, but are not limited to: environmental background (noise level, etc.) information; vehicle information (number of vehicles, travel speed, signal to noise ratio, etc.); road surface information (speed bump pitch, number, road surface pothole position, etc.); site information (types of engineering vehicles, drilling, tamping, construction work and rest, etc.); district/company entrances and exits (exit/entrance gate traffic, work and rest time, etc.).

To facilitate an understanding of the embodiments of the present application, the following description is made:

in the present application, "and/or" describing the association relationship of the association object means that there may be three relationships, for example, a and/or B may mean: a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/", generally indicates that the front-rear associated object is an or relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

In the present application, "first", "second" and various numerical numbers indicate distinction for convenience of description, and are not intended to limit the scope of embodiments of the present application. For example, different indication information is distinguished, etc.

In the present application, the descriptions of "when … …", "in … …" and "if" etc. all refer to the corresponding processing that the device will perform under some objective condition, and are not limited in time, nor do they require that the device must have a judging action in implementation, nor are they meant to imply other limitations.

Optical fibers are the main communication medium in recent years by virtue of the characteristics of large capacity, low delay and the like, and the optical fibers are protected by the optical fibers, but once the optical fibers fail, all optical paths passing through the optical fibers fail, so that the communication quality is poor, even the communication is interrupted and the like. In order to obtain high reliability of communication, a main-standby path protection scheme is generally adopted, i.e. there are a plurality of optical fibers connecting between two devices. It should be appreciated that route separation is a precondition for active-standby path protection to enhance reliability. If the optical cable 1 and the optical cable 2 corresponding to the two paths have the same ditch (buried), the same route is formed between the main path and the standby path. The typical feature of two paths routed together is the close physical space. When one of the paths fails, it is often accompanied by the other path also failing. For example, the optical cable 1 and the optical cable 2 in the same trench are cut by an excavator. At this time, the protection of the active and standby paths is completely disabled and cannot play a role in protection, and data transmission between devices is affected, so that the reliability and availability of services are affected. Therefore, it is urgent to quickly adapt to the dynamic change of the network and identify whether multiple optical paths are routed together.

The distributed optical fiber sensing is deployed on the sending equipment and the receiving equipment, the excitation sources are deployed at the positions of a pipe well, a joint box, an optical cross box and the like on the two optical fibers for scrambling, the disturbance positions of the excitation sources are determined to be the same-route points of the two optical fibers through acquiring and analyzing disturbance echo signals corresponding to the two optical fibers, and the same-route sections can be determined through a plurality of same-route points. However, this implementation requires a new incentive, and deployment of the incentive is costly and relatively difficult to operate and maintain.

In view of the above, the present application provides a method for detecting the same route, which is to extract the optical fiber characteristic information of a plurality of optical fibers and compare the optical fiber characteristics based on time information and space information, so as to determine the probability of the same route between different optical fibers. The method can adapt to the dynamic change of the network, accurately and rapidly detect whether a plurality of light paths are routed together, does not need manual site construction, and can improve the reliability and availability of the service.

It should be appreciated that embodiments of the present application apply to optical communication systems, including but not limited to: an optical transport network (optical transport network, OTN), an optical access network (optical access network, OAN), a synchronous digital hierarchy (DIGITAL HIERARCHY, SDH), a passive optical network (passive optical network, PON), an Ethernet (Ethernet), or a flexible Ethernet (FlexE), a wavelength division multiplexing (WAVELENGTH DIVISION MULTIPLEXING, WDM) network, or the like. Fig. 2 shows an optical communication system comprising a central controller and a plurality of devices, such as device a, device B, device C and device D. The device A and the device C are connected through an optical fiber 1, the device B and the device D are connected through an optical fiber 2, and the optical fiber 1 and the optical fiber 2 are respectively used for transmitting data between the devices. And the central controller is connected with the equipment A and the equipment D so as to acquire the characteristic information reported by the equipment A and the equipment D. Alternatively, the device B and the device C may also be connected to the central controller, and report the feature information to the central controller, which is not particularly limited in the present application. Alternatively, the device a, the device B, the device C, and the device D in the optical communication network may have the functions of transmitting an optical signal and receiving an optical signal at the same time. That is, in the practical application scenario, the transmitting device may have a function of receiving an optical signal, and the receiving device may have a function of transmitting an optical signal. Of course, the four devices are merely examples, and more or fewer devices may be included in the practical application scenario, which is not limited by the present application.

The following will describe in detail the schemes provided by the embodiments of the present application with reference to the accompanying drawings.

Fig. 3 is a schematic structural diagram of a co-route detection system according to an embodiment of the present application. As shown in fig. 3, the system includes a co-route management unit and a plurality of devices (e.g., device a and device B). The same-route management unit can be deployed on the central controller, and an optical fiber sensing module is respectively deployed on the equipment A and the equipment B. For example, the optical fiber sensing modules on the equipment A and the equipment B correspondingly collect optical fiber information characteristics, report the optical fiber information characteristics to the central controller, and then compare the similarity of the optical fiber characteristic information of the two optical fibers by the same-route management unit to obtain the same-route probability.

Illustratively, the co-route management unit includes a data acquisition control module, a data management module, a co-route detection module, and a Shared Risk Link Group (SRLG) management module. The device A and the device B comprise an acquisition control module, an optical fiber sensing module and a data characteristic analysis unit.

(1) The data acquisition control module is used for controlling/managing equipment (for example, equipment A and equipment B) to acquire optical fiber sensing data, and can be used for designating any two-by-two optical fiber monitoring and also can be used for designating batch/whole network monitoring.

(2) And the data management module is used for storing and managing the optical fiber data of the equipment.

(3) The same-route detection module is used for judging the similarity according to the optical fiber characteristic information (such as time, space and data) of the two optical fibers to be compared, and further judging whether the two optical fibers meet the same-route condition. Wherein the data comprises at least one of: vibration data, temperature data, stress data.

(4) And the SRLG management module is used for managing the new addition, the failure, the change and the like of the SRLG.

(5) And the acquisition control module is used for controlling the start and stop time of the acquisition data of the optical fiber sensor, the acquired data (such as vibration data, temperature data and stress data), the acquisition mode (full acquisition mode and event monitoring mode) and the like.

(6) And the optical fiber sensing module is used for transmitting the detection optical signal to the optical fiber, receiving the scattered echo signal from the optical fiber, extracting data from the scattered echo signal and the like.

(7) And the data characteristic analysis unit is used for analyzing the scattered echo signals and extracting the characteristic information of the optical fibers.

Fig. 4 is a schematic structural diagram of another co-route detection system according to an embodiment of the present application. As shown in fig. 4, the system includes a device (e.g., device C) on which a fiber optic sensing module is disposed. The difference from fig. 3 is that the system comprises no different route management unit. That is, the device C may determine the detected fiber characteristic information of the two optical fibers according to the port (e.g., the optical fiber interface unit (fiber interface unit, FIU)) identification of the optical fiber sensing module.

That is, the method provided by the present application may be performed by a co-route management unit deployed on a central controller, or by a device in an optical communications network. It should be understood that the number of devices and the number of fiber optic sensing modules are not particularly limited in the present application. The above fig. 3 and fig. 4 are only examples given for the convenience of understanding, and should not constitute any limitation on the technical solution of the present application.

Next, taking two optical fibers as examples, the same-route detection method provided by the application is specifically described. It should be noted that the present application is also applicable to detection of the same route of a plurality of optical fibers, and the corresponding calculation mode of the same route probability is similar, and the present application is not limited to this, and specifically can be adjusted according to the actual application scenario.

Fig. 5 is a flow chart of a method 500 for detecting the same route according to an embodiment of the present application, as shown in fig. 5, specifically including the following steps.

S510, acquiring the first optical fiber characteristic information and the second optical fiber characteristic information.

Wherein the first fiber characteristic information includes: time #1, space #1, and data #1, the second fiber characteristic information includes: time #2, space #2, and data #2. Data #1 and data #2 include one or more of the following: vibration data, stress data, and temperature data. The first fiber characteristic information corresponds to the optical fiber 1, and the second fiber characteristic information corresponds to the optical fiber 2.

The same-route detection system shown in fig. 3 and the scene diagram of the same-route detection shown in fig. 6 are taken as examples for illustration. As shown in fig. 6, assuming that the optical fiber sensor #1 is deployed on the apparatus a, the optical fiber 1 connects the apparatus a and the apparatus C, and the optical fiber 1 passes through road traffic, a construction site, a cell gate, and the like. Fiber sensor #2 is deployed on equipment B, fiber 2 connects equipment B and equipment D, fiber 2 passes over a worksite, railway, etc. Wherein, the optical fiber 1 and the optical fiber 2 pass through the same ditch section, such as the position of a construction site, and then the optical fiber characteristic information collected by the optical fiber sensor #1 and the optical fiber sensor #2 at the same ditch section has similarity, such as similar environmental background noise, or similar vehicle information, and the like.

It will be appreciated that the first fiber characteristic information corresponding to the optical fiber 1 means: the device a is connected with the device C through the optical fiber 1, the device a sends a first optical signal to the device C and receives a first echo signal, the first optical signal and the first echo signal are transmitted in the optical fiber 1, and the optical fiber sensing module #1 of the device a can extract first optical fiber characteristic information from the first echo signal. Similarly, the second fiber characteristic information corresponding to fiber 2 means: the device B is connected with the device D through the optical fiber 2, the device B sends a second optical signal to the device D and receives a second echo signal, the second optical signal and the second echo signal are transmitted in the optical fiber 2, and the optical fiber sensing module #2 of the device B can extract second optical fiber characteristic information from the second echo signal.

For example, assuming that the type of data collected is vibration data, the first fiber characteristic information collected by the fiber optic sensing module #1 includes 10 pieces of data, which are vibration data corresponding to the positions a1, b1, c1, d1, e1, f1, g1, h1, i1, and j1 (e.g., space # 1) of the fiber optic 1, in order of 1ms, 2ms, 3ms, 4ms, 5ms, 6ms, 7ms, 8ms, 9ms, and 10ms (e.g., time # 1) in one detection period, for example, 0 to 10 ms. Similarly, the second fiber characteristic information collected by the fiber optic sensing module #2 includes 10 pieces of data within 0 to 10ms as described above, which are vibration data corresponding to the positions a2, b2, c2, d2, e2, f2, g2, h2, i2, and j2 (e.g., space # 2) of the fiber optic 2 at the 1 st ms, 2ms, 3ms, 4ms, 5ms, 6ms, 7ms, 8ms, 9ms, and 10ms (e.g., time # 2) in sequence. Specifically, the data format collected by the optical fiber sensing module #1 and the optical fiber sensing module #2 may be as shown in fig. 7, and each square may be regarded as one data, for example, the third square from the left corresponding to the optical fiber 1 may be understood as vibration data of the c1 position of the optical fiber 1 collected by the optical fiber sensing module #1 at 3ms, the fifth square from the left corresponding to the optical fiber 2 may be understood as vibration data of the e2 position of the optical fiber 2 collected by the optical fiber sensing module #2 at 5ms, and so on.

It should be noted that the parameters given above are examples given for understanding the solution, and should not constitute any limitation on the technical solution of the present application. For example, the number of the time, the spatial position, and the data in the first optical fiber characteristic information and the second optical fiber characteristic information may be the same, or may be different, or may be one or a plurality of, which is not limited in the present application. In addition, the collected data types are merely examples, and may be stress data, temperature data, and/or the like, which is not limited in the present application, so long as the first optical fiber characteristic information and the second optical fiber characteristic information adopt the same type of data when the similarity is compared in the following. The data collected by the optical fiber sensing module #1 may be different vibration data, temperature data or stress data corresponding to the same position on the optical fiber 1 at different times, and the data collected by the optical fiber sensing module #2 is similar, which is not particularly limited in the present application.

It should be understood that, in the embodiment of the present application, the device for sending or receiving an optical signal may be a device with higher sensitivity, for example, a narrow linewidth laser may be used to send the optical signal; or a high-sensitivity detection device can be adopted to detect the optical signal, so that when the optical signal is transmitted in the optical fiber, even if the optical signal is affected by fine optical fiber vibration, the temperature change influence or the stress change influence can be detected, and the co-routing probability between the two optical fibers is timely calculated according to the detected optical fiber characteristic information, so that the real-time monitoring of the co-routing probability between the optical fibers in the optical communication network is realized.

S520, determining the probability of the first optical fiber and the second optical fiber to be co-routed according to the first optical fiber characteristic information and the second optical fiber characteristic information.

The scenario to which the same-route detection method of the present application is applicable includes, but is not limited to:

scene one: as shown in the same-route detection system in FIG. 3, the central controller actively triggers any two groups (or more than two groups) of optical fibers of the whole network to perform same-route detection.

Illustratively, the central controller selects a pair or a collection of optical fibers (e.g., fiber 1 and fiber 2) and issues an indication to the devices (e.g., device a and device B) to collect fiber characterization information, optionally in the form of vibration data. After the optical fiber characteristic information of a detection period (for example, within 0 to 10 ms) is extracted, the device A and the device B respectively send the first optical fiber characteristic information and the second optical fiber characteristic information to the central controller, and after the central controller receives the first optical fiber characteristic information and the second optical fiber characteristic information reported by the device A and the device B, the same-route detection unit starts the same-route similarity matching, analyzes the similarity of the optical fiber 1 and the optical fiber 2, and gives the same-route probability of the optical fiber 1 and the optical fiber 2.

As shown in fig. 7, for 10 data corresponding to the collected optical fiber 1 and 10 data corresponding to the collected optical fiber 2 are matched in pairs in the same detection period, that is, 100 possible cases are present. Wherein the co-routing probability for each case satisfies:

wherein P _slice is the same route probability of any two matched data slices of the optical fiber 1 and the optical fiber 2, The matching degree of the time #1 in the first optical fiber characteristic information and the time #2 in the second optical fiber characteristic information is represented, and the closer the time of the time #1 and the time #2 is, the higher the matching degree is, and the better the time synchronization effect is. /(I)The value of (1) is (0, 1). feature ₁ represents data #1 in the first optical fiber characteristic information, feature ₂ represents data #2 in the second optical fiber characteristic information, and f is a matching calculation method of similarity between data #1 and data # 2.

Specifically, when P _slice>P_{slice_threhold}, the data slice location may be calibrated as a suspicious co-route point. For example, the 4 th data slice on the optical fiber 1 shown in fig. 7 (for example, corresponding to the position d1 on the optical fiber 1 shown in fig. 6) is matched with the 10 th data slices on the optical fiber 2 to calculate the same-route probability, and if the 4 th data slice on the optical fiber 1 and the 5 th data slice on the optical fiber 2 (for example, corresponding to the position e2 on the optical fiber 2 shown in fig. 6) are matched, the calculated same-route probability P _slice is greater than the preset threshold P _{slice_threhold}, and the position d1 may be marked as a suspicious same-route position (may also be referred to as a same-route point), for example, corresponding to the site position shown in fig. 6.

It will be appreciated that to ensure accuracy of detection, the more detection periods are accumulated, the better. After a plurality of detection periods are continued, the equipment A and the equipment B extract and report the first optical fiber characteristic information and the second optical fiber characteristic information to the central controller respectively, so that the central controller can detect the same route of the data slices on the optical fiber 1 and the optical fiber 2, and the specific implementation mode can refer to the related description of one detection period to detect the same route probability of the data slices by the first optical fiber characteristic information and the second optical fiber characteristic information obtained in each detection period. Thus, the central controller may perform the above-described detection steps for all detection periods, resulting in a matrix of time-space-probability.

In order to enhance the co-route probability, the technical scheme of the application can combine fig. 8 and 9, and perform space-time search based on the determined suspicious co-route points to determine the co-route segments. The specific idea is as follows:

Fig. 8 is a schematic diagram of the same route according to an embodiment of the present application. As shown in fig. 8, the optical fiber 1 between the device a and the device B, the optical fiber 2 between the device C and the device D have co-channel segments, and the co-channel segments include a plurality of co-channel small segments, for example, co-channel small segments 1 to 5. For example, the co-channel subsection 1 herein may be considered as the suspicious co-routing point d1 determined above, which may be the worksite location shown in FIG. 6. It should be appreciated that the more successive co-channel segments, the greater the co-channel probability and the greater the co-route probability. It should also be appreciated that the co-gouges are typically varied from tens of meters to kilometers and that the middle co-gouge small segments of the co-gouge segments are not necessarily simultaneously disturbed by the environment (e.g., temperature, vibration or stress), and therefore need to be searched, combined in space-time, according to the determined suspicious co-routing points, to enhance co-routing probability, and thereby determine those of the co-gouge small segments that have the same route.

Illustratively, searching outward in time-space centered around a suspicious co-route point (e.g., co-channel segment 1) may result in the schematic diagram of the co-route spatio-temporal search shown in fig. 9. Next, the present application will explain the co-routing probability in terms of both time dimension probability accumulation and space dimension probability accumulation.

(1) Time dimension probability accumulation: after determining that the co-gouge minor segment 1 is a suspicious co-route point, the co-route probability of the co-gouge minor segment 1 is detected over a certain spatial distance (e.g., 10 m) and for a long period (e.g., 0 to 100 ms), as shown by P _{1_0}、P_{1_1}、P_{1_2}、...、P_{1_N}. The determination of the same-route probability P _{1_i} corresponding to the ith time can refer to the above formula (1), i is a positive integer less than or equal to N. Taking the probability corresponding to the moment with the highest probability in P _{1_0}、P_{1_1}、P_{1_2}、...、P_{1_N} detected in a long period as the same-route probability of the same-channel small section 1 of the optical fiber 1 and the optical fiber 2, for example, P _{1_2};

(2) Spatial dimension probability accumulation: after determining that the co-gouge minor segment 1 is a suspicious co-route, the co-route probability of the co-gouge minor segment 1 and its neighboring suspicious co-gouge minor segments is detected over a long distance (e.g., 100 m) within a certain period (e.g., within 0 to 10 ms), as shown by P _{1_0}、P_{2_0}、P_{3_0}、...、P_{5_0}. The determination method of the same-route probability P _{m_0} corresponding to the mth spatial position can refer to the above formula (1), where m is a positive integer less than or equal to 5. If the co-route probability of the adjacent suspicious co-channel small sections is larger than the preset threshold value, the adjacent suspicious co-channel small sections can be combined with the co-channel small section 1 to form continuous co-route sections. For example, if P _{2_0} and P _{3_0} are both greater than the preset threshold and P _{4_0} and P _{5_0} are less than the preset threshold, the co-channel small segment 2 and the co-channel small segment 3 corresponding to the co-channel small segments 1 and P _{2_0}、P_{3_0} respectively may be combined to form a co-route segment, so as to enhance the co-route probability of the optical fiber 1 and the optical fiber 2.

By the above detection method, the co-routing probability of the optical fiber 1 and the optical fiber 2 is determined under the condition of searching for a long time and a long distance by taking the co-channel small section 1 shown in fig. 8 as a suspicious co-routing point as a center and using the method shown in fig. 9. For example, first, a temporal co-route search is performed on the co-channel small segment 1, where P _{1_2} is determined as the maximum co-route probability obtained by the long-time search of the co-channel small segment 1, i=2, i.e. the co-route probability of the optical fiber 1 and the optical fiber 2 in the co-channel small segment 1 is determined to be P _{1_2}. And then, carrying out space search by taking P _{1_2} as a starting point, respectively detecting the co-routing probability of the co-channel small section 2 to the co-channel small section 5 adjacent to the co-channel small section 1, determining whether the co-routing probability of each adjacent co-channel small section is larger than a threshold value, and further determining whether the co-channel small sections can be combined or not to serve as continuous co-routing sections of the optical fibers 1 and 2. For example, if it is computationally determined that only P _{2_2} of P _{2_2} -P _{5_2} is greater than the preset threshold, then co-channel segment 1 and co-channel segment 2 can be combined as consecutive co-routed segments of optical fibers 1 and 2.

In other words, by the above-described co-routing probability integration in the time dimension and the space dimension, the more successive co-routing segments, the higher the co-routing probability of the optical fiber 1 and the optical fiber 2.

Illustratively, based on the above-described time dimension probability accumulation and space dimension probability accumulation, the probabilities P _all that can be combined in time-space satisfy:

Where M represents a spatial dimension (e.g., the mth spatial position), i represents a temporal dimension (e.g., the i+1th detection period), p _{m_i} represents the co-channel (or co-route) probability detected by the optical fiber 1 and the optical fiber 2 at the mth spatial position and at the i+1th detection period, i is an integer greater than 0, and M is an integer greater than or equal to 1 and less than or equal to M.

Scene II: in the co-route detection system shown in fig. 3, after the device (for example, the device a and the device B) detects the optical fiber event, the device a and the device B trigger the respective optical fiber sensors to perform the co-route detection.

Illustratively, device a monitors fiber 1 in real time, device B monitors fiber 2 in real time, and triggers a fiber sensor to extract fiber characteristic information when a fiber event is found. After the optical fiber characteristic information of a detection period (for example, within 0 to 10 ms) is extracted, the device A and the device B respectively send the first optical fiber characteristic information and the second optical fiber characteristic information to the central controller, and after the central controller receives the first optical fiber characteristic information and the second optical fiber characteristic information reported by the device A and the device B, the same-route detection unit starts the same-route similarity matching, analyzes the similarity of the optical fiber 1 and the optical fiber 2, and gives the same-route probability of the optical fiber 1 and the optical fiber 2.

For the same detection period, the determination manner of the same-route probability of the data matched by any two of the optical fibers 1 and 2 can be referred to the related description in the above scenario 1. For brevity, no further description is provided herein. It should be noted that if the central controller determines that the probability of the same route of any two matched data is smaller than the preset threshold according to the first optical fiber characteristic information reported by the device a and the second optical fiber characteristic information reported by the device B, the central controller may determine that the current optical fiber event is a false alarm, and stop executing the subsequent steps.

Scene III: as in the co-route detection system shown in fig. 4, the device (e.g., device C) autonomously performs the co-route detection of the optical fiber 1 and the optical fiber 2.

Illustratively, the device C monitors the optical fiber 1 and the optical fiber 2 in real time, integrates the FIU in the device C, and determines the optical fiber characteristic information detected by different optical fiber sensing modules through the FIU identification. For example, FIU#1 corresponds to the first fiber characteristic information, and FIU#2 corresponds to the second fiber characteristic information. Optionally, the device C triggers the fiber sensor to collect fiber characteristic information when a fiber event is found. When the extraction of the optical fiber characteristic information of one detection period (for example, within 0 to 10 ms) is completed, the device C starts the co-route similarity matching, analyzes the similarity of the optical fiber 1 and the optical fiber 2, and gives the co-route probability of the optical fiber 1 and the optical fiber 2.

For the same detection period, the determination manner of the same-route probability of the data matched by any two of the optical fibers 1 and 2 can be referred to the related description in the above scenario 1. For brevity, no further description is provided herein. It should be noted that if the device C determines that the probability of the same route of the data matched by any two is smaller than the preset threshold according to the collected first optical fiber characteristic information and the second optical fiber characteristic information, it may determine that the current optical fiber event is a false alarm, and stop executing the subsequent steps.

In summary, according to the scheme disclosed by the application, the same routing probability among different optical fibers is calculated by collecting the optical fiber characteristic information among different optical fibers and analyzing the similarity of the different optical fibers. Meanwhile, the same-route probability among different optical fibers is enhanced from the angles of time dimension and space dimension, so that the labor cost caused by manual recording and maintenance can be avoided, and the same-route risk caused by untimely manual recording or recording errors is avoided.

Embodiments of the co-route detection method of the present application are described above in detail with reference to fig. 1 to 9, and embodiments of the co-route detection device of the present application will be described below in detail with reference to fig. 10 and 11. It is to be understood that the description of the device embodiments corresponds to the description of the method embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 10 is a schematic diagram of a co-route detection device 1000 according to an embodiment of the present application. As shown in fig. 10, the apparatus 1000 may include a processing unit 1100 and an acquisition unit 1200. The acquisition unit 1200 may communicate with the outside, and the processing unit 1100 is used for data processing. Alternatively, the acquisition unit 1200 may also be a transceiver unit, which may also be referred to as a communication interface.

In one possible design, the apparatus 1000 may implement steps or processes performed by a central controller or device corresponding to the above method embodiment 500, where the processing unit 1100 is configured to perform the processing related operations in the above method embodiment, and the obtaining unit 1200 may be configured to perform the obtaining (transceiving) related operations in the above method embodiment.

It should be understood that the apparatus 1000 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 1000 may be specifically configured to perform the respective processes and/or steps corresponding to the transmitting end in the foregoing method embodiment, or the apparatus 1000 may be specifically configured to be configured to perform the respective processes and/or steps corresponding to the receiving end in the foregoing method embodiment, which are not repeated herein.

The apparatus 1000 of each of the above embodiments has a function of implementing the corresponding step performed by the transmitting end in the above method, or the apparatus 1000 of each of the above embodiments has a function of implementing the corresponding step performed by the receiving end in the above method. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transceiver unit may be replaced by a transceiver (e.g., a transmitting unit in the transceiver unit may be replaced by a transmitter, a receiving unit in the transceiver unit may be replaced by a receiver), and other units, such as a processing unit, etc., may be replaced by a processor, to perform the transceiver operations and related processing operations in the various method embodiments, respectively.

The transceiver unit may be a transceiver circuit (for example, may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit. In the embodiment of the present application, the apparatus in fig. 10 may be the receiving end or the transmitting end in the foregoing embodiment, or may be a chip or a chip system, for example: system on chip (SoC). The transceiver unit may be an input/output circuit or a communication interface. The processing unit is an integrated processor or microprocessor or integrated circuit on the chip. And are not limited herein.

Fig. 11 is a schematic diagram of another apparatus 2000 for detecting the same route according to an embodiment of the present application. As shown in fig. 11, the apparatus 2000 includes a processor 2010 and a transceiver 2020. Wherein the processor 2010 and the transceiver 2020 are in communication with each other via an internal connection, the processor 2010 is configured to execute instructions to control the transceiver 2020 to transmit signals and/or receive signals.

Optionally, the apparatus 2000 may further include a memory 2030, where the memory 2030 communicates with the processor 2010 and the transceiver 2020 through an internal connection. The memory 2030 is for storing instructions and the processor 2010 may execute the instructions stored in the memory 2030.

In one possible implementation manner, the apparatus 2000 is configured to implement the respective flows and steps corresponding to the central controller or the device in the method embodiment 500.

It should be understood that the apparatus 2000 may be specifically a transmitting end or a receiving end in the above embodiment, and may also be a chip or a chip system. Correspondingly, the transceiver 2020 may be a transceiver circuit of the chip, which is not limited herein. Specifically, the apparatus 2000 may be configured to perform each step and/or flow corresponding to the sending end or the receiving end in the above method embodiments.

Alternatively, the memory 2030 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store information of the device type. The processor 2010 may be configured to execute instructions stored in a memory, and when the processor 2010 executes the instructions stored in the memory, the processor 2010 is configured to perform the steps and/or processes of the method embodiments corresponding to the transmitting side or the receiving side described above.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of the method disclosed by the embodiment of the application can be directly embodied in a hardware processor or can be performed by combining hardware and software modules in the processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be understood that the specific examples of the embodiments of the present application are only for helping those skilled in the art to better understand the technical solutions of the present application, and the above specific implementation manner may be considered as the best implementation manner of the present application, and not limit the scope of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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 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 foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The method for detecting the same route is characterized by comprising the following steps:

Acquiring first optical fiber characteristic information and second optical fiber characteristic information, wherein the first optical fiber characteristic information comprises first time, first space and first data, the second optical fiber characteristic information comprises second time, second space and second data, the first optical fiber characteristic information corresponds to the first optical fiber, the second optical fiber characteristic information corresponds to the second optical fiber, and the first time and the second time belong to a first detection period;

And determining the same-route probability of the first optical fiber and the second optical fiber according to the first optical fiber characteristic information and the second optical fiber characteristic information.

2. The method of claim 1, wherein a first co-routing probability P ₁ for the first optical fiber and the second optical fiber over the first probing period satisfies:

P₁＝k₁*f(feature₁,feature₂)

3. The method according to claim 2, wherein the method further comprises:

And when the first co-routing probability is greater than a first threshold, determining that the first optical fiber and the second optical fiber have a co-routing in the first space, wherein the first space is a co-routing point of the first optical fiber and the second optical fiber.

4. A method according to claim 3, characterized in that the method further comprises:

Acquiring third optical fiber characteristic information and fourth optical fiber characteristic information, wherein the third optical fiber characteristic information comprises third time, the first space and third data, the fourth optical fiber characteristic information comprises fourth time, the first space and fourth data, the third optical fiber characteristic information corresponds to the first optical fiber, the fourth optical fiber characteristic information corresponds to the second optical fiber, and the third time and the fourth time belong to a second detection period;

And determining a second co-routing probability of the first optical fiber and the second optical fiber in the second detection period according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

5. The method according to claim 4, wherein the method further comprises:

and under the condition that the second co-routing probability is larger than the first co-routing probability, determining the second co-routing probability as the target co-routing probability of the first optical fiber and the second optical fiber in the first space.

6. The method of claim 5, wherein the method further comprises:

Acquiring fifth optical fiber characteristic information and sixth optical fiber characteristic information, wherein the fifth optical fiber characteristic information comprises fifth time, third space and fifth data, the fourth optical fiber characteristic information comprises sixth time, fourth space and sixth data, the fifth optical fiber characteristic information corresponds to the first optical fiber, the sixth optical fiber characteristic information corresponds to the second optical fiber, the fifth time and the sixth time belong to the second detection period, and the third space is adjacent to the first space;

and determining a third co-routing probability of the first optical fiber and the second optical fiber in the third space according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

7. The method of claim 6, wherein the method further comprises:

And determining the first space and the third space as the same-route sections of the first optical fiber and the second optical fiber under the condition that the third same-route probability is larger than the first threshold value.

8. The method of claims 1 to 7, wherein the first data comprises one or more of: first vibration data, first temperature data, first stress data, the second data comprising one or more of: second vibration data, second temperature data, second stress data.

9. A co-route detection device, comprising:

The device comprises an acquisition unit, a detection unit and a detection unit, wherein the acquisition unit is used for acquiring first optical fiber characteristic information and second optical fiber characteristic information, the first optical fiber characteristic information comprises first time, first space and first data, the second optical fiber characteristic information comprises second time, second space and second data, the first optical fiber characteristic information corresponds to a first optical fiber, the second optical fiber characteristic information corresponds to a second optical fiber, and the first time and the second time belong to a first detection period;

and the processing unit is used for determining the same-route probability of the first optical fiber and the second optical fiber according to the first optical fiber characteristic information and the second optical fiber characteristic information.

10. The apparatus of claim 9, wherein a first co-routing probability P ₁ for the first optical fiber and the second optical fiber over the first probing period satisfies:

P₁＝k₁*f(feature₁,feature₂)

11. The apparatus of claim 10, wherein the processing unit is further configured to:

12. The apparatus of claim 11, wherein the device comprises a plurality of sensors,

The acquisition unit is further configured to: acquiring third optical fiber characteristic information and fourth optical fiber characteristic information, wherein the third optical fiber characteristic information comprises third time, the first space and third data, the fourth optical fiber characteristic information comprises fourth time, the first space and fourth data, the third optical fiber characteristic information corresponds to the first optical fiber, the fourth optical fiber characteristic information corresponds to the second optical fiber, and the third time and the fourth time belong to a second detection period;

The processing unit is further configured to: and determining a second co-routing probability of the first optical fiber and the second optical fiber in the second detection period according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

13. The apparatus of claim 12, wherein the processing unit is further configured to:

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

The acquisition unit is further configured to: acquiring fifth optical fiber characteristic information and sixth optical fiber characteristic information, wherein the fifth optical fiber characteristic information comprises fifth time, third space and fifth data, the fourth optical fiber characteristic information comprises sixth time, fourth space and sixth data, the fifth optical fiber characteristic information corresponds to the first optical fiber, the sixth optical fiber characteristic information corresponds to the second optical fiber, the fifth time and the sixth time belong to the second detection period, and the third space is adjacent to the first space;

The processing unit is further configured to: and determining a third co-routing probability of the first optical fiber and the second optical fiber in the third space according to the third optical fiber characteristic information and the fourth optical fiber characteristic information.

15. The apparatus of claim 14, wherein the processing unit is further configured to:

16. The apparatus of claims 9 to 14, wherein the first data comprises one or more of: first vibration data, first temperature data, first stress data, the second data comprising one or more of: second vibration data, second temperature data, second stress data.

17. A co-route detection device, comprising: a processor and an interface circuit are provided,

The interface circuit is configured to receive signals from other communication devices than the communication device and transmit or send signals from the processor to the other communication devices than the communication device, the processor implementing the method according to any one of claims 1 to 8 by logic circuitry or executing code instructions for the communication device.

18. A co-route detection system, comprising: a central controller and a plurality of network devices, the central controller having a co-route management unit disposed thereon, the network devices having an optical fiber sensing module disposed thereon, the co-route management unit and the optical fiber sensing module for performing the method of any of claims 1-8.

19. A chip, comprising: a processor for calling and running a computer program from a memory, such that the chip is installed to perform the method of any of claims 1 to 8.

20. A computer storage medium having stored therein computer instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 8.