CN116112832A

CN116112832A - Co-route detection method and device

Info

Publication number: CN116112832A
Application number: CN202111331122.5A
Authority: CN
Inventors: 汪大勇; 秦海明; 李川
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2023-05-12
Also published as: WO2023082774A1

Abstract

The embodiment of the application provides a same-route detection method, which is applied to a same-route detection system and comprises a plurality of optical fiber sensing modules, at least one excitation source terminal and a same-route detection unit, wherein the method comprises the following steps: the same-route detection unit receives first disturbance information from the first optical fiber sensing module and receives second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the excitation source is started to be disturbed, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals; and determining the disturbance position of the first excitation source terminal as the same-route position of the first light path and the second light path according to the first disturbance information and the second disturbance information. The method can adapt to dynamic changes of the network, and accurately and rapidly detect whether a plurality of light paths are routed together.

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. The optical cable routes of two service paths are referred to as co-routes when there are co-cables, co-ditches (buried)/co-ditches (overhead), co-optical cross boxes/splice boxes.

With the multiplication of the number of the optical cables and the staggering and the complexity of the optical cable network, the optical cable network is often changed (cut off, cut on, newly laid, changed on the way, etc.), and the like, the optical cable network is very difficult to manage accurately in real time. When the geographic information system (geographic information system, GIS) information maintained by the management plane is inconsistent with the real physical GIS information, the planned main and standby paths are caused to have the same route.

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 have the same route 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 be able to dynamically change, accurately and rapidly detect the same route of multiple optical paths by using the adaptive network is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a same-route identification detection and device which can be used for detecting the same route of a plurality of light paths in a self-adaptive network dynamic change, accurate and rapid manner.

In a first aspect, a co-route detection method is provided, applied to a co-route detection system, where the co-route detection system includes a plurality of optical fiber sensing modules, at least one excitation source terminal, and a co-route detection unit, the plurality of optical fiber sensing modules includes a first optical fiber sensing module and a second optical fiber sensing module, and the at least one excitation source terminal includes a first excitation source terminal, the method includes: the same-route detection unit receives first disturbance information from the first optical fiber sensing module and receives second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts excitation source disturbance, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals; and the same-route detection unit determines the disturbance position of the first excitation source terminal as the same-route position of the first light path and the second light path according to the first disturbance information and the second disturbance information.

It should be noted that, the method may be performed by the co-route detection unit, or may be performed by a chip or a circuit for the co-route detection unit, which is not limited in this application. For convenience of description, the following description will be given by taking an example of execution by the same-route detecting unit.

According to the scheme provided by the application, after the first excitation source terminal starts excitation source disturbance, the disturbance position is judged to be the same-route position of the first optical path and the second optical path by receiving disturbance information from different optical paths. Based on the method for identifying the same route of the optical fiber sensing data after active scrambling, whether two optical paths have the same route or not can be identified rapidly and accurately.

Alternatively, the present application is equally applicable to identifying and detecting multiple optical paths having co-routed segments. For example, there is another disturbance location, and the co-route detection unit determines that the other disturbance location is also a co-route location of the first optical path and the second optical path according to the above implementation. Therefore, the geographical section formed by the two disturbance positions can be considered as the same route section of the first light path and the second light path.

It should be understood that in the above implementation manner, the first network element and the second network element are respectively deployed with the first optical fiber sensing module and the second optical fiber sensing module, that is, one network element corresponds to one optical fiber sensing module. Alternatively, a plurality of optical fiber sensing modules (for example, a first optical fiber sensing module and a second optical fiber sensing module) may be deployed at one network element (for example, a first network element), and the network element may determine corresponding disturbance information detected by different optical fiber sensing modules according to a port (for example, an optical fiber interface unit (fiber interface unit, FIU) port) identifier. The foregoing is illustrative only and should not be construed as limiting the scope of the present application.

It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element may be the same route or may be different routes, which is not specifically limited in this application.

In the technical scheme of the application, the acquisition of the disturbance echo signal can be understood as follows: the phase information of light generated by Rayleigh scattering in the optical fiber is monitored and collected by utilizing the working principle of an optical time domain reflectometer (optical time domain reflectometer, OTDR), so that the transmission characteristics of the optical fiber in each optical fiber are judged. For example, by detecting the phase condition of two optical fibers at the disturbance location of the excitation source terminal, it is further detected whether the two optical paths have the same route at the disturbance location.

With reference to the first aspect, in certain implementations of the first aspect, the first excitation source terminal controls excitation source disturbance by encoding.

Illustratively, the encoding mode is used to control whether the excitation source terminal is started. For example, when the codeword is 0, it is used to indicate that the disturbance of the excitation source terminal is stopped. When the codeword is 1, it is used to indicate that the disturbance of the excitation source terminal is started. The foregoing is illustrative only and should not be construed as limiting the scope of the present application.

With reference to the first aspect, in certain implementations of the first aspect, the excitation source of the first excitation source terminal employs a mechanical wave or an acoustic wave.

With reference to the first aspect, in some implementation manners of the first aspect, a generating manner of the disturbance code of the first excitation source terminal includes: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

Illustratively, the fiber optic sensing module will give a vibration detection result once every detection period (e.g., 0.5 s) (detected vibration may be identified as 1, undetected vibration as 0). Because mechanical vibration opens and stops and has inertia, opens and stops the code fast (in 0.5s time) and does not have the operability, this application technical scheme adopts and detects the cycle with a plurality of continuous optical fiber sensing as a vibration code (vibration is 1, and non-vibration is 0), and vibration code can adopt two modes: firstly, the vibration (M detection periods)/non-vibration coding (N detection periods) time is not fixed, and different codes are generated by controlling the M/N duty ratio; secondly, vibration (M detection periods)/non-vibration code (N detection periods) time is fixed (m=n), and different codes are generated by using communication codes (for example, code division multiple access (code division multiple access, CDMA), etc.).

With reference to the first aspect, in some implementations of the first aspect, the co-route detection unit determines, according to the first disturbance information and the second disturbance information, a disturbance position of the first excitation source terminal as a co-route position of the first optical path and the second optical path, including: when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is larger than a preset threshold value, the co-route detection unit determines that the disturbance position of the first excitation source terminal is the co-route position of the first light path and the second light path.

With reference to the first aspect, in certain implementation manners of the first aspect, the co-route detection unit receives third disturbance information from the first excitation source terminal, where the third disturbance information includes at least one of the following information: the method comprises the steps that a first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal; and the same-route detection unit determines the disturbance position of the first excitation source terminal as the same-route position of the first light path and the second light path according to the first disturbance information, the second disturbance information and the third disturbance information.

It should be noted that the co-route detection unit may determine whether the first optical path and the second optical path have a co-route at the disturbance location of the excitation source terminal based on the first disturbance information, the second disturbance information, and the third disturbance information. The accuracy of the implementation can be further improved. The third disturbance information reported by the excitation source terminal is identical to the disturbance time and the disturbance position in the first disturbance information and the second disturbance information in an ideal state.

It should be understood that the first disturbance information and the second disturbance information are respectively monitored and reported by the first optical fiber sensing module and the second optical fiber sensing module, and the third disturbance information is directly reported by the excitation source terminal. In addition, the co-route detection unit can determine a first disturbance code and a second disturbance code corresponding to the first light path and the second light path respectively according to the first disturbance information and/or the second disturbance information, and can directly acquire a third disturbance code from the third disturbance information.

In other words, the reporting objects of the first disturbance information, the second disturbance information and the third disturbance information are different, the sources are different, and the specific reporting forms are also different.

With reference to the first aspect, in some implementations of the first aspect, the co-route detection unit determines, according to the first disturbance information, the second disturbance information, and the third disturbance information, a disturbance position of the first excitation source terminal as a co-route position of the first optical path and the second optical path, including: the co-route detection unit determines a first disturbance code according to the first disturbance information and/or determines a second disturbance code according to the second disturbance information; when the similarity between at least one disturbance code in the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is larger than a preset threshold value, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first light path and the second light path.

In the implementation mode, the coding detection can effectively resist environmental interference, and the efficiency and accuracy of the same-route detection are improved.

It should be noted that, the above method for judging whether the disturbance positions of the multiple light paths at the excitation source terminal have the same route according to the disturbance code and/or the disturbance echo may be used independently or in combination, which is not specifically limited in the technical scheme of the present application.

With reference to the first aspect, in some implementations of the first aspect, the first optical fiber sensing module and the second optical fiber sensing module are disposed at a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

By way of example, the first excitation source terminal may be deployed in a tubular well, a light box, a fiber box, an overhead pole, etc. of the light path.

With reference to the first aspect, in certain implementation manners of the first aspect, the co-route detection unit sends a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information, respectively.

With reference to the first aspect, in certain implementations of the first aspect, the at least one excitation source terminal includes a second excitation source terminal, the method further comprising: the same-route detection unit receives third disturbance information from the first optical fiber sensing module and receives fourth disturbance information from the second optical fiber sensing module, the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal starts excitation source disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information comprise disturbance time and disturbance echo signals; the same-route detection unit generates first optical fiber geographic information system GIS information according to the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system GIS information according to the second disturbance information and the fourth disturbance information; the same-route detection unit determines the disturbance position of the first excitation source terminal and/or the disturbance position of the second excitation source terminal as the same-route position of the first optical path and the second optical path according to the fact that the first optical fiber GIS information and the second optical fiber GIS information are matched to have the same-near points.

The GIS information of the optical fiber geographic information system can be understood as the real geographic position of the optical fiber. For example, the latitude and longitude of the fiber.

In the implementation mode, the identification of the automatic same route of the whole network is realized by determining a plurality of excitation source terminals deployed on a plurality of light paths and detecting whether the light paths have the same route at a plurality of disturbance positions, so that the simultaneous detection of multiple points is supported, and the efficiency is multiplied.

With reference to the first aspect, in some implementations of the first aspect, the co-route detection unit receives at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in a first range, the first range is a range with a radius R and a center of a first excitation source terminal closest to a target fiber breaking point, and the target fiber breaking point is a fiber breaking position detected by the first optical fiber sensing module in a first optical path; the co-route detection unit determines at least one second excitation source terminal of the next hop from the first excitation source terminal according to at least one disturbance information in the first range, wherein the at least one second excitation source terminal is an excitation source terminal on the first optical path.

With reference to the first aspect, in some implementations of the first aspect, the co-route detection unit receives at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in an ith range, the ith range is a range with the ith excitation source terminal as a center and a radius R, the ith excitation source terminal is an excitation source terminal of a next hop of the ith-1 excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the same-route detection unit determines at least one (i+1) th excitation source terminal of the next hop from the (i) th excitation source terminal according to at least one disturbance information in the (i) th range, wherein the at least one (i+1) th excitation source terminal is an excitation source terminal closest to a third network element on a first optical path, the third network element and the first network element are a starting position and an ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; the same-route detection unit updates the same route of the first optical path based on the i+1 excitation source terminals.

In the implementation mode, a method for detecting and updating the same route in a fiber breaking or cutting scene is provided.

In a second aspect, a co-route detection method is provided, applied to a co-route detection system, where the co-route detection system includes a plurality of optical fiber sensing modules, at least one excitation source terminal, and a co-route detection unit, the plurality of optical fiber sensing modules includes a first optical fiber sensing module and a second optical fiber sensing module, and the at least one excitation source terminal includes a first excitation source terminal, the method includes: after the first excitation source terminal starts excitation source disturbance, the first optical fiber sensing module and the second optical fiber sensing module respectively acquire first disturbance information and second disturbance information, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, the first disturbance information and the second disturbance information respectively comprise disturbance echo signals, and the first disturbance information and the second disturbance information are used for determining that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path; the first optical fiber sensing module and the second optical fiber sensing module respectively send first disturbance information and second disturbance information to the same-route detection unit.

It should be noted that the method may be performed by a fiber optic sensing module (e.g., a first fiber optic sensing module and a second fiber optic sensing module), or may be performed by a chip or a circuit for the fiber optic sensing module, which is not limited in this application. For convenience of description, an example will be described below as being performed by the optical fiber sensing module.

According to the scheme provided by the application, after the excitation source disturbance is started at the first excitation source terminal, the disturbance position is judged to be the same-route position of the first optical path and the second optical path by receiving disturbance information from different optical paths. The method for identifying the same route of the optical fiber sensing data based on active scrambling can quickly and accurately identify whether two optical paths have the same route.

With reference to the second aspect, in some implementations of the second aspect, the first optical fiber sensing module and the second optical fiber sensing module are disposed in a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

By way of example, the first excitation source terminal may be deployed in a tubular well, a light box, a fiber box, an overhead pole, etc. of the light path. With reference to the second aspect, in certain implementations of the second aspect, the first optical fiber sensing module and the second optical fiber sensing module receive a request message from the co-route detection unit, where the request message is used to request to obtain the first disturbance information and the second disturbance information, respectively.

In a third aspect, a co-route detection device is provided, including: the receiving and transmitting unit is used for receiving first disturbance information from the first optical fiber sensing module and receiving second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts the excitation source to disturb, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals; and the processing unit is used for determining the disturbance position of the first excitation source terminal as the same-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

In the technical scheme of the application, the acquisition of the disturbance echo signal can be understood as follows: the phase information of light generated by Rayleigh scattering in the optical fiber is monitored and collected by utilizing the working principle of an optical time domain reflectometer (optical time domain reflectometer, OTDR), so that the transmission characteristics of the optical fiber in each optical fiber are judged. For example, by detecting the phase condition of two optical fibers at the disturbance location of the excitation source terminal, it is further detected whether the two optical paths have the same route at the disturbance location. With reference to the third aspect, in some implementations of the third aspect, the first excitation source terminal controls excitation source disturbance by encoding.

With reference to the third aspect, in some implementations of the third aspect, the excitation source of the first excitation source terminal employs a mechanical wave or an acoustic wave.

With reference to the third aspect, in some implementations of the third aspect, a manner of generating the disturbance code of the first excitation source terminal includes: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

Illustratively, the fiber optic sensing module will give a vibration detection result once every detection period (e.g., 0.5 s) (detected vibration may be identified as 1, undetected vibration as 0). Because mechanical vibration opens and stops and has inertia, opens and stops the code fast (in 0.5s time) and does not have the operability, this application technical scheme adopts and detects the cycle with a plurality of continuous optical fiber sensing as a vibration code (vibration is 1, and non-vibration is 0), and vibration code can adopt two modes: firstly, the vibration (M detection periods)/non-vibration coding (N detection periods) time is not fixed, and different codes are generated by controlling the M/N duty ratio; secondly, vibration (M detection periods)/non-vibration code (N detection periods) time is fixed (m=n), and different codes are generated by using communication codes (e.g., code division multiple access CDMA).

With reference to the third aspect, in some implementations of the third aspect, when a similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the processing unit is further configured to determine that the disturbance location of the first excitation source terminal is a co-routed location of the first optical path and the second optical path.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive third disturbance information from the first excitation source terminal, where the third disturbance information includes at least one of the following information: the method comprises the steps that a first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal; the processing unit is further used for determining that the disturbance position of the first excitation source terminal is the same-route position of the first light path and the second light path according to the first disturbance information, the second disturbance information and the third disturbance information.

With reference to the third aspect, in some implementations of the third aspect, the processing unit is further configured to determine a first disturbance code according to the first disturbance information and/or determine a second disturbance code according to the second disturbance information; when the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the processing unit is further configured to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

With reference to the third aspect, in some implementations of the third aspect, the first optical fiber sensing module and the second optical fiber sensing module are disposed in the first network element and the second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to send a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information, respectively.

With reference to the third aspect, in some implementations of the third aspect, at least one excitation source terminal includes a second excitation source terminal, a transceiver unit, and further configured to receive third disturbance information from the first optical fiber sensing module, and receive fourth disturbance information from the second optical fiber sensing module, where the third disturbance information and the fourth disturbance information are acquired after the second excitation source terminal turns on the excitation source to be disturbed, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information include a disturbance time and a disturbance echo signal; the processing unit is further used for generating first optical fiber geographic information system GIS information according to the first disturbance information and the third disturbance information and generating second optical fiber geographic information system GIS information according to the second disturbance information and the fourth disturbance information; the processing unit is further configured to determine, according to the fact that the matching space of the first optical fiber GIS information and the second optical fiber GIS information has a near point, that the disturbance position of the first excitation source terminal and/or the disturbance position of the second excitation source terminal is the same-route position of the first optical path and the second optical path.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in a first range, the first range is a range with a radius R and a center of a first excitation source terminal closest to a target fiber breaking point, and the target fiber breaking point is a fiber breaking position detected by the first optical fiber sensing module in a first optical path; the processing unit is further configured to determine at least one second excitation source terminal of a next hop from the first excitation source terminal according to at least one disturbance information in the first range, where the at least one second excitation source terminal is an excitation source terminal on the first optical path.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in an ith range, where the ith range is a range with the ith excitation source terminal as a center and a radius R, and the ith excitation source terminal is an excitation source terminal of a next hop of the ith-1 excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the processing unit is further used for determining at least one (i+1) th excitation source terminal of the next hop from the (i) th excitation source terminal according to at least one disturbance information in the (i) th range, wherein the at least one (i+1) th excitation source terminal is the nearest excitation source terminal to a third network element on the first optical path, the third network element and the first network element are the starting position and the ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; and the processing unit is also used for updating the same route of the first optical path based on the i+1 excitation source terminals.

In a fourth aspect, there is provided a co-route detection device, including: the processing unit is used for respectively acquiring first disturbance information and second disturbance information by the first optical fiber sensing module and the second optical fiber sensing module after the first excitation source terminal starts excitation source disturbance, wherein the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, the first disturbance information and the second disturbance information respectively comprise disturbance echo signals, and the first disturbance information and the second disturbance information are used for determining that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path; the receiving and transmitting unit is used for respectively transmitting the first disturbance information and the second disturbance information to the same-route detection unit by the first optical fiber sensing module and the second optical fiber sensing module.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first optical fiber sensing module and the second optical fiber sensing module are disposed in a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to receive a request message from the co-route detection unit by using the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information, respectively.

In a fifth aspect, a co-route detection device is provided, comprising a processor, optionally further comprising a memory for controlling the transceiver to transceive signals, the memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the co-route detection unit performs the method of the first aspect or any of the possible implementations of 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 sixth 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 fibre optic sensor module performs the method of the second aspect or any one of the possible implementations of the second aspect.

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

In a seventh aspect, a co-route detection system is provided, including: a co-route detection unit for performing the method of the first aspect or any one of the possible implementation manners of the first aspect; and a plurality of fibre-optic sensing modules for performing the method of the second aspect or any one of the possible implementations of the second aspect.

In an eighth 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 or cause the computer to perform the method of the second aspect or any one of the possible implementations of the second aspect.

In a ninth aspect, a chip is provided, comprising at least one processor coupled to a memory for storing a computer program, the processor being configured to invoke and run the computer program from the memory, to cause a co-route detection unit, on which the chip is mounted, to perform the method of the first aspect or any of the possible implementations of the first aspect, or to cause a fibre-optic sensing module, on which the chip is mounted, to perform the method of the second aspect or any of the possible implementations of the second 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 tenth aspect, there is provided a computer program product comprising computer program code which, when run by a co-route detection unit, causes the co-route detection unit to perform the method of the first aspect or any one of the possible implementations of the first aspect; alternatively, the computer program code, when run by a fibre-optic sensing module, causes the fibre-optic sensing module to perform the method of the second aspect or any one of the possible implementations of the second aspect.

According to the scheme of the embodiment of the application, the method and the device for detecting the same route are provided, and after the excitation source terminal starts excitation source disturbance, whether the disturbance position is the same route position of different light paths can be rapidly and accurately identified by receiving disturbance information from different light paths.

Drawings

Fig. 1 is a schematic diagram of an example of a communication system to which the present application is applied.

Fig. 2 is a schematic view showing an example of a cross section of an optical cable to which the present application is applied.

Fig. 3 is a schematic diagram showing an example of an optical fiber to which the present application is applied.

Fig. 4 is a schematic diagram illustrating an example of a primary/secondary path protection scheme to which the present application is applied.

Fig. 5 is a schematic diagram illustrating an example of the main/standby path co-routing to which the present application is applied.

Fig. 6 is a schematic diagram of an example of a fiber optic common cable segment to which the present application is applied.

Fig. 7 is a schematic diagram of an example of a co-route detection system device to which the present application is applied.

Fig. 8 is a schematic diagram showing an example of the same-route detection method to which the present application is applied.

Fig. 9 is a schematic diagram of an example of a mechanical wave-based single-point vibration co-route detection system to which the present application is applied.

Fig. 10 is a schematic diagram showing an example of the same-route detection method to which the present application is applied.

Fig. 11 is a schematic diagram showing an example of vibration encoding of an excitation source terminal to which the present invention is applied.

Fig. 12 is another exemplary view of vibration encoding of an excitation source terminal to which the present application is applied.

Fig. 13 is a schematic diagram showing an example of a mechanical wave-based single-point vibration co-route detection system to which the present application is applied.

Fig. 14 is another exemplary diagram of a co-route detection method to which the present application is applied.

Fig. 15 is a schematic diagram showing an example of a full-network automatic co-route detection system to which the present application is applied.

Fig. 16 is a schematic diagram showing still another example of the same-route detection method to which the present application is applied.

Fig. 17 is a schematic diagram showing an example of the same-route detection in the fiber break/cut scene to which the present application is applied.

Fig. 18 is a schematic diagram of still another example of the same-route detection method to which the present application is applied.

Fig. 19 is a schematic diagram showing an example of a common route detection device to which the present invention is applied.

Fig. 20 is another exemplary view of a co-route detection device to which the present application is applied.

Detailed Description

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

Optical fibers are widely used as important communication media in high-speed, high-capacity, low-delay communication systems and the like. The optical fiber is relatively slim and is easy to break, and cannot be directly used for connection between devices. The optical cable is characterized in that a certain number of optical fibers form a cable core in a certain mode, and the basic structure of the optical cable comprises the cable core, reinforcing steel wires, fillers, protective sleeves and the like. The optical cable has strong protection effect on the optical fiber, so that the optical fiber connecting equipment has an engineering realizable scheme.

Optical fiber communication is a communication mode using light waves as a carrier and using optical fibers as transmission media. From a physical structural point of view, the optical fiber may be split into two parts, namely a proximal optical fiber and a distal optical fiber. The optical fiber is used as a near-end optical fiber, wherein the optical fiber is used as an intra-site structure between the combining and dividing unit and the optical fiber distribution frame (optical distribution frame, ODF). The optical fiber for transmitting signals outside the site is used as a far-end optical fiber.

The embodiment of the application can be applied to an optical communication system for detecting whether the optical fibers have the same route or not. The optical communication network includes, but is not limited to: any one or a combination of a plurality of optical transport networks (optical transport network, OTN), optical access networks (optical access network, OAN), synchronous digital hierarchy (synchronous digital hierarchy, SDH), passive optical networks (passive optical network, PON), ethernet (Ethernet), or flexible Ethernet (FlexE), wavelength division multiplexing (wavelength division multiplexing, WDM) networks, etc.

A communication system to which the method of co-route detection provided in the present application is applied will be exemplarily described with reference to an optical communication network shown in fig. 1. Wherein the optical communication network may include a plurality of network elements and a controller. The plurality of network elements are as a transmitting device a, a transmitting device B, a receiving device C, a receiving device D, etc. shown in fig. 1. Of course, the four network elements are merely exemplary, and more or fewer devices may be included in a practical application scenario, which is not limited in this application.

The transmitting device A and the receiving device C are connected through optical fibers, the transmitting device B and the receiving device D are also connected through optical fibers, and the optical fibers are used for transmitting data among the devices.

The controller is connected to a receiving device in the optical communication network, so as to acquire specific information, such as frequency or phase, of the optical signal received by the receiving device. For example, after receiving the optical signals transmitted by the transmitting apparatuses a and B, the receiving apparatuses C and D detect the received optical signals, obtain information such as the frequency or phase of the optical signals, and transmit the information such as the frequency or phase of the optical signals to the controller. The controller is used for determining that the same route exists between the two optical fibers according to the specific information of the optical signals acquired by the receiving equipment.

Of course, the controller may also be connected to a transmitting device in the optical communication network. In the following embodiments of the present application, an example of connection between a controller and a receiving device is described as an example, and the connection between the controller and a transmitting device is not limited. The network element in the optical communication network may have both functions of transmitting an optical signal and receiving an optical signal. Therefore, the transmitting device in the embodiment of the present application refers to a network element that transmits an optical signal, and the receiving device refers to a network element that receives an optical signal. In an actual 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.

The method for detecting the same route provided by the application can be executed by a controller, such as a software defined network (software defined network, SDN) controller or a path computation unit (path computation element, PCE) and the like, and also can be executed by a network element in an optical communication network, and particularly can be adjusted according to actual application scenes.

To facilitate an understanding of the embodiments of the present application, a brief description of several terms referred to in this application will first 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. 2 is a schematic diagram of an example of a cross section of an optical cable, where the optical cable includes a protection sleeve 21, and four optical fibers 22, that is,

optical fibers

1, 2, 3, and 4 in fig. 2, are wrapped inside the protection sleeve 21. In addition, other components, such as filler, power cord, etc., are disposed in the optical cable, and the structural relationship between the optical cable and the optical fiber is described herein, 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 the path between two adjacent sites, which takes the FIU single boards at two ends as the starting and ending single boards.

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. A fiber optic interface unit (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 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.

As the distance between the devices increases, the volume and weight of the cable also increases. Therefore, a length of optical cable cannot realize data transmission between devices at a relatively long distance, and multiple lengths of optical cable need to be spliced together. And because the length of a section of optical cable is limited, the optical cables can be connected through an ODF, an optical cross box or a junction box and the like, and the optical cross box or the junction box and the like can be understood to divide the optical cable into a plurality of sections of optical cable.

Fig. 3 is a schematic diagram showing an example of an optical fiber to which the present application is applied. As shown in fig. 3, the ODF 1, the splice box, the optical cross box, and the ODF 2 divide the optical fiber between the transmitting device and the receiving device into a plurality of segments, each segment of optical fiber is located in or wrapped in a different optical cable segment, e.g., the optical fiber between the ODF 1 and the splice box is located in or wrapped in the optical cable segment 1, the optical fiber between the splice box and the optical cross box is located in or wrapped in the optical cable segment 2, and the optical fiber between the optical cross box and the ODF 2 is located in or wrapped in the optical cable segment 3. A fiber optic cable segment is understood to be a length of continuous fiber optic cable between two connection points, where there are no fusion points or connection points in the length of continuous fiber optic cable.

Alternatively, in the present application, an excitation source terminal may be disposed on a fiber optic cable section where co-route detection is required, for generating vibration to drive the optical fiber to vibrate. For example, in combination with the foregoing fig. 3, an excitation source terminal may be disposed at any one position of a well, a junction box, an optical cross box, a machine room or an optical cable section without a fiber box, so that the excitation source terminal vibrates, and by detecting disturbance information, it is determined whether different optical fibers have the same route at the disturbance position.

Optical fibers have been the main communication medium in recent years due to their characteristics of large capacity, low delay, etc., and are called "information highways". The countries, operators and enterprises compete for investment in a large amount of funds and manpower to build the optical cable network, so that the coverage rate of the optical cable is increased in an explosive manner. However, the physical characteristics of the fiber itself, such as being pliable, breakable, fire-resistant, stress-resistant, make fiber failure the biggest potential hazard to the network. In an optical communication system, in order to obtain high reliability of communication, a main-standby path protection scheme is generally adopted, that is, there are a plurality of optical paths connecting two devices.

Fig. 4 is a schematic diagram illustrating an example of a primary/secondary path protection scheme to which the present application is applied. As shown in fig. 4, there are two optical paths connecting the device a and the device B, which are a main path and a standby path, respectively. I.e. device a and device B may communicate over the main path and the backup path, respectively. When the main path fails, the service can be cut to the standby path. The implementation mode can ensure the reliability of communication and avoid interruption of data transmission between devices caused by optical fiber faults.

It should be noted that 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 junction box, the same route is called as the same route. As the number of fiber optic cables increases, the fiber optic cable network becomes intricate. In addition, the optical cable network is frequently changed such as cutting off, cutting over, newly paving, changing the road and the like, so that the optical cable network is difficult to manage accurately in real time. When the geographic information system (geographic information system, GIS) information maintained by the management plane is inconsistent with the real physical GIS, the planned active-standby paths are caused to have the same routing condition.

However, as distance increases, the volume, weight, etc. of the cable increases, and for long-distance transmission between devices, the connected cable needs to be spliced from multiple cable segments. Also, a length of fiber optic cable may include multiple optical fibers, and different optical fibers may be routed to different devices, with the understanding that different optical fibers lead to different directions, requiring splitting of the optical fibers in the cable.

Optical fibers connecting communications between two stations are referred to as a communications path, and the two communications paths may share the same length of fiber optic cable. For example, if communication path 1 is composed of cable segment 1 and cable segment 2, and communication path 2 is composed of cable segment 2 and cable segment 3, cable segment 2 is a cable segment common to communication path 1 and communication path 2, and the common cable segment may be referred to as a common cable segment hereinafter. In addition, if the same cable segment of the communication path 1 and the communication path 2 fails, for example, is cut, bent, squeezed, etc., the communication quality of both the communication path 1 and the communication path 2 is degraded, or even interrupted.

Fig. 5 is a schematic diagram illustrating an example of the main/standby path co-routing to which the present application is applied. As shown in fig. 5, there are two optical paths between the device a and the device B, which are a main path and a standby path, respectively. The optical cable 1 and the optical cable 2 corresponding to the two paths are routed in the same ditch (buried), so that the same route is formed between the main path and the standby path.

It will be appreciated that the typical feature of two paths routed together is a close physical space. When one of the paths fails, it is often accompanied by the other path also failing. For example, two cables in the same trench are cut by an excavator. It should be noted that, when the primary and secondary paths have the same route section, the primary and secondary paths have a higher risk of interruption at the same time. When the risk occurs, the protection of the main and standby paths is thoroughly disabled, and the protection effect cannot be achieved, so that the reliability and the availability of the service are affected. Therefore, in order to avoid this risk, a means for identifying whether two optical paths have the same route, which can quickly adapt to the dynamic changes of the network, is urgent.

Currently, manufacturers cannot build optical cables by themselves, and all optical cables of leased operators are mainly used. Cable resources are one of the most important basic resources for operators. Wherein, the optical cable resources comprise optical distribution frame ODF, optical cable, optical fiber, pipeline, and rod path, and the like, and the optical cable resources need to be collected, recorded and checked manually.

Because the optical cable of the operator has large quantity and is always dynamically changed (such as new construction, cutting connection, old disassembly and the like), the manual management efficiency is low. When optical fibers are rented, the efficiency of manually detecting whether different cables are routed simultaneously is low, and the time consumption is long. In order to maintain the high-accuracy and comprehensive optical cable information, the required labor cost is high and the difficulty is high. In addition, it is difficult, if not impossible, to obtain comprehensive, real-time, accurate cable information.

Fig. 6 is a schematic diagram showing an example of the co-route detection to which the present application is applied. As shown in fig. 6 (a), the application scenario may include at least two optical communication devices, and may include, for example, a transmitting device a, a transmitting device B, a receiving device C, and a receiving device D. The device A and the device C and the device B and the device D are connected through optical fibers. An optical path A-C is formed between the device A and the device C, and an optical path B-D is formed between the device B and the device D. Wherein, two adjacent sections of optical cables are usually connected by adopting a mechanical connector or a fiber melting mode. The optical cable routes routed by optical paths A-C and optical paths B-D exist in the same cable (for example, optical cable section 3), the same optical cross box and the same junction box.

The optical fibers connected between the transmitting device a and the receiving device C may be located or wrapped in the optical cable section 1, the optical cable section 3, and the optical cable section 4, and the optical fibers connected between the transmitting device B and the receiving device D may be located or wrapped in the optical cable section 2, the optical cable section 3, and the optical cable section 5. Thus, the optical cable segment 3 is a segment of an optical cable common to the optical fibers connected between the transmitting device a and the receiving device C and the optical fibers connected between the transmitting device B and the receiving device D.

As shown in fig. 6 (b), the application scenario may include a transmitting device a, a receiving device C, a receiving device D, and the like, where an optical fiber connected between the transmitting device a and the receiving device C may be located or wrapped in the optical cable section 3 and the optical cable section 4, and an optical fiber connected between the transmitting device a and the receiving device D may be located or wrapped in the optical cable section 3 and the optical cable section 5, so that the optical cable section 3 is an optical cable section shared by the optical fiber connected between the transmitting device a and the receiving device C and the optical fiber connected between the transmitting device a and the receiving device D.

Although the optical cable protects the optical fibers, once the optical cable fails (e.g., is cut, bent or squeezed, etc.), all optical paths passing through the optical cable fail, resulting in poor communication quality, even interruption, etc. Therefore, in order to improve the reliability of communication, primary and backup protection is generally adopted, that is, there are a plurality of optical fibers connecting two devices, and when a primary path fails, service data can be switched to a backup path for transmission.

As shown in fig. 6 (c), there are path 1 and path 2 composed of optical fibers between the transmitting device and the receiving device. If the same cable section exists in the path 1 and the path 2, if the same cable section fails, for example, is cut off, bent or extruded, transmission of the path 1 and the path 2 is interrupted, so that data transmission between the sending device and the receiving device is affected, and even data cannot be transmitted. Therefore, in order to avoid the risk of the same cable in the main and standby paths, the identification of the same cable section needs to be realized quickly, accurately and in a manner of adapting to the dynamic change of the network. However, if the device information of the optical cable path is recorded manually, a large labor cost is required, and when some devices or optical cables in the optical cable are changed or updated, the updated devices or optical cables may not be recorded manually in time, so that a shared optical cable section between two optical fibers may not be recorded timely, and data transmission between the devices is affected.

However, when the main path and the standby path are routed together, if the shared optical cable section fails, such as being cut, bent or extruded, data cannot be transmitted between the two devices, so that the main path and the standby path cannot play a role in protection.

It should be understood that one optical fiber may pass through one or more lengths of fiber optic cable. If two optical fibers pass through the same optical cable with one or more sections, an optical time domain reflectometer (optical time domain reflectometer, OTDR) can be used for detecting whether the characteristics of the optical cables of the two optical fibers are similar or not, so that the co-cabling probability of the two optical fibers is determined.

However, this implementation can only detect if two fibers are co-cabled, but cannot detect co-channel/co-rod, co-route, etc. scenarios, have certain limitations.

Currently, an optical cable patrol means is provided by adopting a mode of manually combining patrol auxiliary tools. The line inspection analyzer is connected with the line inspection optical fiber, the optical fiber distribution frame ODF is connected with the pipe well 1, the pipe well 2, the pipe well n through the optical fiber, and the mobile terminal is used for displaying echo signals of the line inspection analyzer.

In this implementation, the cable routing is restored by manually knocking the cable along the road, and a cable routing database is established. Since fiber optic sensing is very sensitive to vibration, when a hammer strikes a well lid (e.g., pipe well 1, pipe well 2, pipe well n), the strike signal can be seen in the fiber optic sensing echo signal. The method comprises the steps of repeatedly knocking at a cable patrol point, and observing an echo signal of a cable patrol analyzer displayed on the mobile terminal to judge whether a signal displayed on the mobile terminal is a knocking signal at the cable patrol point. If the mobile terminal confirms that a knocking signal appears at the cable inspection point, the optical cable is marked to pass through the cable inspection point. If no signal is present at the mobile terminal, it cannot be determined whether the optical cable passes through the cable routing point.

However, considering that the disturbance similar to knocking in the nature is quite large, the knocking mode is easy to be disturbed, and the condition of false detection occurs. Moreover, the knocking mode requires a relatively rich distinguishing experience of operators, and has great operation difficulty. Due to the fact that manual arrival is needed, the cable inspection efficiency is low, the labor cost is high and the like. In addition, after the optical cable is changed, the optical cable still needs to be manually arrived at the scene, and updating is delayed, and updating omission, slow data updating and the like are easy to occur. In a word, the whole scheme is low in accuracy and efficiency. Finally, the manual tap for co-route detection requires simultaneous detection at both sites, and tapping in the co-route point is almost impossible with current solutions.

In summary, the route separation is a key dynamic factor affecting the reliability of optical communication, and is therefore highly valued. The realization of route separation is a precondition for enhancing the reliability of the main and standby path protection. However, because the optical cable GIS information is mainly collected, recorded and checked manually, the efficiency is low, the maintenance cost is high, and the service cannot be regulated dynamically in real time due to untimely updating (e.g. new building, cutting and old disassembling) of the optical cable, a large number of single-point faults of the same cable are easy to occur, so that the serious loss is caused.

In view of this, the present application provides an accurate, fast, co-route detection method capable of adapting to dynamic changes of a network, in which a scrambling terminal with a code is configured in a co-route detection system, so that all optical fibers in the same route will sense disturbance signals. And the optical fiber sensing signal is received through optical fiber sensing, and whether the optical fiber contains a specific disturbance signal is analyzed to perform the same-route detection.

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

in this application, "at least one" refers to one or more of the above. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: 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 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 embodiments of the present application.

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

In this application, "for indicating" may include for direct indication and for indirect indication. When describing that certain indication information is used for indicating A, the indication information may be included to directly indicate A or indirectly indicate A, and does not represent that the indication information is necessarily carried with A.

The specific indication means may be any of various existing indication means, such as, but not limited to, the above indication means, various combinations thereof, and the like. Specific details of various indications may be referred to the prior art and are not described herein. As can be seen from the above, for example, when multiple pieces of information of the same type need to be indicated, different manners of indication of different pieces of information may occur. In a specific implementation process, a required indication mode can be selected according to specific needs, and in this embodiment of the present application, the selected indication mode is not limited, so that the indication mode according to the embodiment of the present application should be understood to cover various methods that can enable a party to be indicated to learn information to be indicated.

In the embodiments of the present application, the descriptions of "when … …", "in … …" and "if" and the like all refer to that the device will perform the corresponding process under some objective condition, and are not limited in time, nor do they require that the device have to perform the action of determining when it is implemented, nor do they mean that there are other limitations.

The method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Fig. 7 is a schematic diagram of an example of a co-route detection system device to which the present application is applied. As shown in fig. 7, the system device includes an optical fiber sensing module, a co-route shared risk link group (shared risk link groups, SRLG) detection unit, and an excitation source terminal. Specifically, when a coded scrambling terminal is placed at the same route point (e.g., co-optical cross box, fiber fuse box, co-rod, etc.) or at the same route segment (e.g., co-channel or co-overhead segment), all fibers in the same route will perceive the disturbance signal. Meanwhile, an optical fiber sensor is deployed at a network element to receive an optical fiber sensing signal, and the same-route detection is performed by analyzing whether a specific disturbance signal is contained in the optical fiber. In addition, the same-route SRLG detection unit is deployed on a certain node (for example, a certain network element, a network control engine (network cloud engine, NCE), a network manager, etc.) of the network to implement the same-route SRLG detection.

The optical fiber sensing module mainly comprises a detection module and a data analysis module. The detection module is used for acquiring disturbance echo signals of each point of the optical fiber. The data analysis module is used for determining the position where disturbance exists by analyzing the obtained disturbance echo signals of each point of the optical fiber. If the disturbance exists, the disturbance echo signal is reported to the same-route SRLG detection unit.

It should be noted that the distributed optical fiber sensor can implement a sensing technology of continuously distributed detection of vibration and acoustic field. 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. .

The same-route SRLG detection unit mainly comprises a control or management module, a data management module, an SRLG detection module, an SRLG management module and the like. The control or management module is used for controlling or managing the optical fiber sensing and/or excitation source terminal and is responsible for enabling, issuing configuration, collecting data of the optical fiber sensing and/or excitation source terminal and the like. The data management module is responsible for collecting data storage and the like. The SRLG detection module is used for matching whether two disturbance echo signals meet a similarity threshold according to the disturbance echo signals reported by the optical fiber sensing, the excitation disturbance information and time reported by the excitation source terminal and the like. For example, the accuracy of the same-route SRLG detection is doubly ensured according to the similarity between disturbance echoes and the similarity between the disturbance echoes and the disturbance information of the excitation source is larger than a preset threshold value. The SRLG management module is used for managing the SRLG newly-added, invalid, changed and the like.

The excitation source terminal has the basic function of coded disturbance, and can additionally support the functions of reporting position GIS information, time information, remote coding control and the like. The excitation source can adopt mechanical waves and sound waves, and the characteristics of the mechanical waves and the sound waves or the implementation coding mode of the mechanical waves and the sound waves. The frequency range of the mechanical vibration wave is usually less than 150Hz, and single-frequency time domain coding can be adopted. The frequency range of the sound wave is usually 20-20000Hz, and multi-frequency combination coding can be adopted. E.g. music, etc., different music contains different sound spectra.

Fig. 8 is a schematic diagram of an example of a co-route detection method 800 provided in an embodiment of the present application, where the method is applied to a co-route detection system, and the co-route detection system includes a plurality of optical fiber sensing modules, at least one excitation source terminal, and a co-route detection unit, where the plurality of optical fiber sensing modules includes a first optical fiber sensing module and a second optical fiber sensing module, and the at least one excitation source terminal includes a first excitation source terminal, and specific implementation steps include:

s810, the first optical fiber sensing module and the second optical fiber sensing module acquire first disturbance information and second disturbance information. The first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts the excitation source to perform disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals.

It should be noted that, as a distributed optical fiber sensing system, a phase OTDR system generally uses a narrow-linewidth pulse laser as a sensing light source, and may respond to phase modulation. Wherein, the light pulse is injected from one end of the optical fiber, and the light detector detects the backward Rayleigh scattered light. The light injected into the fiber is strongly coherent, so the output of the sensing system is the result of backward rayleigh scattered light coherent interference. Phase OTDR derives the location of the disturbance by measuring the time delay between the injected pulse and the received signal. When the optical fiber line is disturbed, the refractive index and length of the optical fiber at the corresponding position will change, which will result in a change of the optical phase at the position. Since the scattered light at the disturbance location is transmitted to the detector undergoing a periodic phase change, the resulting phase change will result in a change in light intensity due to interference and corresponds to the disturbance location. The phase OTDR has the advantages of high sensitivity, high positioning accuracy, simple data processing and the like.

By way of example and not limitation, the first excitation source terminal controls excitation source disturbance by way of encoding.

In the embodiment of the application, the excitation source of the first excitation source terminal adopts mechanical waves or acoustic waves.

By way of example and not limitation, the manner in which the disturbance code of the first excitation source terminal is generated includes: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

Illustratively, the fiber optic sensing module will give a vibration detection result once every detection period (e.g., 0.5 s) (detected vibration may be identified as 1, undetected vibration as 0). Because mechanical vibration opens and stops and has inertia, opens and stops the code fast (in 0.5s time) and does not have the operability, this application technical scheme adopts and detects the cycle with a plurality of continuous optical fiber sensing as a vibration code (vibration is 1, and non-vibration is 0), and vibration code can adopt two modes: firstly, the vibration (M detection periods)/non-vibration coding (N detection periods) time is not fixed, and different codes are generated by controlling the M/N duty ratio; secondly, vibration (M detection periods)/non-vibration code (N detection periods) time is fixed (m=n), and different codes are generated by using communication codes (e.g., code division multiple access, CDMA).

In the embodiment of the application, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed at the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and/or the second optical path.

Optionally, the co-route detection unit sends the request message to the first optical fiber sensing module and the second optical fiber sensing module.

Correspondingly, the first optical fiber sensing module and the second optical fiber sensing module receive request messages from the same-route detection unit, wherein the request messages are respectively used for requesting to acquire first disturbance information and second disturbance information.

S820, the first optical fiber sensing module and the second optical fiber sensing module respectively send first disturbance information and second disturbance information to the same-route detection unit.

Correspondingly, the same-route detection unit receives first disturbance information and second disturbance information from the first optical fiber sensing module and the second optical fiber sensing module respectively.

And S830, the co-route detection unit determines the disturbance position of the first excitation source terminal as the co-route position of the first light path and the second light path according to the first disturbance information and the second disturbance information.

As an example and not by way of limitation, the co-route detection unit determines the disturbance location of the first excitation source terminal as the co-route location of the first optical path and the second optical path when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold.

Illustratively, the co-route detection unit initiates the co-route detection after collecting the data for a period of time. The specific co-route detection method comprises the following steps: recording that a disturbance echo acquired by a first network element is data1, and a disturbance echo acquired by a second network element is data2, wherein the echo similarity is represented by r, namely:

r(data1，data2)＝cov(data1，data2)/sqrt(var(data1)*var(data2))

where r (a, b) represents a and b correlation coefficients, cov (a, b) represents a and b covariance, and var (a) represents a variance.

When r is greater than a preset threshold (threshold), for example 0.8, the disturbance location is considered to be the same-route location of the first optical path and the second optical path.

In one possible implementation, the co-route detection unit receives third disturbance information from the first excitation source terminal, the third disturbance information including at least one of: the method comprises the steps that a first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal; and the same-route detection unit determines the disturbance position of the first excitation source terminal as the same-route position of the first light path and the second light path according to the first disturbance information, the second disturbance information and the third disturbance information.

Further, in this implementation, the co-routed detection unit determines a first disturbance code from the first disturbance information and/or determines a second disturbance code from the second disturbance information; when the similarity between at least one disturbance code in the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is larger than a preset threshold value, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first light path and the second light path.

Illustratively, the co-route detection unit initiates the co-route detection after collecting the data for a period of time. The specific co-route detection method comprises the following steps: recording a disturbance code extracted by a first network element as code1, a disturbance code extracted by a second network element as code2, and a disturbance code reported by an excitation source terminal as code0, wherein the similarity of codes is represented by a levenshtein distance, namely:

levab(code1，code2)＝1-ch<code1，code2>/max(len_code1，len_code2)

levab(code1，code0)＝1-ch<code1，code0>/max(len_code1，len_code0)

levab(code0，code2)＝1-ch<code0，code2>/max(len_code0，len_code2)

Where levab (a, b) represents the levenshtein distance of codes a and b, ch < a, b > represents the minimum operand that changes from code a to b, len_a represents the length of code a.

When the above 3 groups of levab are all greater than a preset threshold (threshold), for example 0.8, the disturbance location is considered to be the same-route location of the first optical path and the second optical path.

Illustratively, the co-route detection unit determines that the disturbance position of the excitation source terminal is the co-route position of the first optical path and the second optical path according to the coding similarity levab (code 1, code 2) =1-ch < code1, code2>/max (len_code1, len_code2) between the first disturbance code1 and the second disturbance code2 being greater than a preset threshold.

It should be noted that the technical scheme of the application is also suitable for identifying and detecting that a plurality of light paths have the same route section. For example, there is another disturbance location, and the co-route detection unit determines that the other disturbance location is also a co-route location of the first optical path and the second optical path according to the above implementation. Therefore, the geographical section formed by the two disturbance positions can be considered as the same route section of the first light path and the second light path.

In another possible implementation, the at least one excitation source terminal includes a second excitation source terminal.

First, the first optical fiber sensing module and the second optical fiber sensing module respectively send third disturbance information and fourth disturbance information to the same-route detection unit. Correspondingly, the same-route detection unit respectively receives third disturbance information and fourth disturbance information from the first optical fiber sensing module and the second optical fiber sensing module,

the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal starts the excitation source to perform disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information comprise disturbance time and disturbance echo signals.

Secondly, the same-route detection unit generates first optical fiber geographic information system GIS information according to the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system GIS information according to the second disturbance information and the fourth disturbance information;

and finally, determining the disturbance position of the first excitation source terminal and/or the disturbance position of the second excitation source terminal as the same-route position of the first optical path and the second optical path by the same-route detection unit according to the fact that the first optical fiber GIS information and the second optical fiber GIS information have similar points in the matching space.

In yet another implementation manner, the co-route detection unit receives at least one disturbance information from the first optical fiber sensing module, the at least one disturbance information corresponds to at least one excitation source terminal in a first range, the first range is a range with a radius R and a center of a first excitation source terminal nearest to a target fiber breaking point, and the target fiber breaking point is a fiber breaking position detected by the first optical fiber sensing module in a first optical path; the co-route detection unit determines at least one second excitation source terminal of the next hop from the first excitation source terminal according to at least one disturbance information in the first range, wherein the at least one second excitation source terminal is an excitation source terminal on the first optical path.

Further, the co-route detection unit receives at least one disturbance message from the first optical fiber sensing module, the at least one disturbance message corresponds to at least one excitation source terminal in an ith range, the ith range is a range with the ith excitation source terminal as a circle center and a radius of R, the ith excitation source terminal is an excitation source terminal of the next hop of the ith-1 excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the same-route detection unit determines at least one (i+1) th excitation source terminal of the next hop from the (i) th excitation source terminal according to at least one disturbance information in the (i) th range, wherein the at least one (i+1) th excitation source terminal is an excitation source terminal closest to a third network element on a first optical path, the third network element and the first network element are a starting position and an ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; the same-route detection unit updates the same route of the first optical path based on the i+1 excitation source terminals.

The optical fiber sensing module at the network element a can monitor and collect one or more disturbance information, and can determine that one or more excitation source terminals corresponding to the one or more disturbance information are deployed on the first optical path. And then, starting all excitation source terminals in a range taking the one or more excitation source terminals as a circle center and taking R as a radius, and continuously monitoring and collecting one or more disturbance information by the corresponding optical fiber sensing module at the network element A. And monitoring and collecting disturbance information in turn until the latest route of the first light path between the network element A and the network element B is formed.

In summary, the embodiment of the present application provides a detection and apparatus for identifying the same route, where after a first excitation source terminal starts excitation source disturbance, the disturbance location is determined to be the same route location of a first optical path and a second optical path by receiving disturbance information from different optical paths. The method can be used for detecting the same route of a plurality of light paths accurately and rapidly in a self-adaptive network dynamic change.

Fig. 9 is a schematic diagram of an example of a mechanical wave-based single point vibration co-route SRLG detection system to which the present application is applied. As shown in fig. 9, the system device includes an optical fiber sensing module, a co-routed SRLG detection unit and a mechanical vibration excitation source terminal.

For example, an optical path is formed between the network element A1 and the network element B1, and between the network element A2 and the network element B2, and the optical cable routes routed by the two optical paths have the same routing point or the same routing segment. And (3) placing a coded mechanical vibration excitation source terminal at the same route point or the same route section, wherein all optical fibers in the same route can sense a disturbance signal of the mechanical vibration excitation source terminal. Meanwhile, optical fiber sensors are deployed at the network elements A1, A2, B1 and B2 respectively to receive optical fiber sensing signals, and the optical fiber sensors are used for analyzing whether specific disturbance signals are contained in the optical fibers or not so as to perform same-route detection. In addition, a same-route SRLG detection unit is deployed on a certain node of the network to realize the detection of the same-route SRLG.

The same-route SRLG detection unit detects the same route of two light paths by receiving first information reported by a mechanical wave vibration excitation source terminal, namely information such as a disturbance position GIS, disturbance characteristic information, disturbance code #0, disturbance time and the like, and second information reported by an optical fiber sensing module, namely perception disturbance characteristic information such as disturbance code #1, disturbance time, disturbance distance and the like.

Fig. 10 is a schematic diagram illustrating an example of a method 1000 for detecting a same route to which the present application is applied. As shown in fig. 10, the excitation source adopts mechanical waves, and the specific implementation steps include:

s1010, the excitation source terminal sends first information to the same-route SRLG detection unit.

Correspondingly, the same-route SRLG detection unit receives first information from an excitation source terminal.

Wherein the first information comprises at least one of: information such as disturbance position GIS, disturbance time, disturbance code #0 and the like of the excitation source terminal.

Illustratively, the patrolling personnel arrive at the planned detection point and initiate a mechanical vibration excitation source terminal disturbance. Then, the excitation source terminal reports the first information to the same-route SRLG detection unit for judging the accuracy of the same-route SRLG detection in the subsequent step S1050.

In the embodiment of the application, the co-route SRLG detection unit includes a network manager, NCE, and the like.

It should be noted that, the optical fiber sensing module may give a vibration detection result once every detection period (for example, 0.5 s) (for example, a detected vibration may be identified as 1, and an undetected vibration is identified as 0). Because of the inertia of the mechanical vibration start-stop, the quick (within 0.5 s) start-stop code has no operability. Thus, embodiments of the present application encode a plurality of consecutive fiber sensing periods as one disturbance (e.g., a disturbance of 1, a non-disturbance of 0). The disturbance code #0 of the specific mechanical vibration excitation source terminal can adopt the following two modes:

Mode one: the time of the disturbance code (M detection periods)/the non-disturbance code (N detection periods) is not fixed, and different codes are generated by controlling the M/N duty ratio. Wherein M and N are non-identical positive integers.

Fig. 11 is a schematic diagram showing an example of vibration encoding of an excitation source terminal to which the present invention is applied. As shown in fig. 11 (a), the disturbance code #0 of the excitation source terminal is: 10. where 1 represents a disturbance and 0 represents a non-disturbance, the corresponding disturbance code sequence is [11111,00000,11111, … ]. I.e. in this implementation the duty cycle of the perturbed and non-perturbed encoding is 50%. As shown in fig. 11 (b), the disturbance code #0 of the excitation source terminal is: 10. where 1 represents a disturbance and 0 represents a non-disturbance, the corresponding disturbance code sequence is [11111111,00,1111111, … ]. I.e. in this implementation the duty cycle of the perturbed and non-perturbed encoding is 70%.

Mode two: the time of the disturbance code (M detection periods)/the non-disturbance code (N detection periods) is fixed, and the different codes are generated by using communication codes (e.g., code division multiple access CDMA). Wherein M and N are the same positive integer.

Fig. 12 is another exemplary view of vibration encoding of an excitation source terminal to which the present application is applied. As shown in fig. 12 (a), the disturbance code #0 of the excitation source terminal is: 11001. wherein, 1 represents disturbance, 0 represents non-disturbance, and the corresponding disturbance coding sequence is [11111,11111,00000,00000,11111]. As shown in fig. 12 (b), the disturbance code #0 of the excitation source terminal is: 10110. wherein, 1 represents disturbance, 0 represents non-disturbance, and the corresponding disturbance coding sequence is [11111,00000,1111,11111,00000].

It should be noted that, the two disturbance coding #0 modes provided above are merely exemplary, and should not be construed as limiting the technical scheme in the present application.

S1020, the co-routed SRLG detection unit sends a request message to the fiber optic sensing modules (e.g., the first fiber optic sensing module and the second fiber optic sensing module).

Correspondingly, the optical fiber sensing module receives a request message from the co-routed SRLG detection unit.

Wherein the request message is for requesting acquisition of the second information (i.e., the first perturbation information and the second perturbation information). For example, the second message includes the disturbance echo signal #0, the disturbance time, and the like.

Specifically, the first disturbance information is a disturbance echo signal generated by the first optical path when the excitation source is disturbed, and the second disturbance information is a disturbance echo signal generated by the second optical path when the excitation source is disturbed.

The same-route SRLG detection unit sends a request message for data acquisition to all optical fiber sensing modules in the management area after receiving disturbance information of the excitation source terminal.

S1030, the optical fiber sensing module acquires a disturbance echo signal #0 according to the request message.

Illustratively, each fiber optic sensing module begins to collect data (e.g., disturbance echo signals at various points of the fiber) after receiving a request message for data collection.

S1040, the optical fiber sensing module sends second information to the same-route SRLG detection unit.

Correspondingly, the same-route SRLG detection unit receives second information from the optical fiber sensing module.

The optical fiber sensing module reports information such as disturbance time, disturbance distance, disturbance echo signal #0 and the like of the disturbance position of the optical fiber to the same-route SRLG detection unit after the disturbance echo signal of the optical fiber is acquired.

S1050, the same-route SRLG detection unit determines the disturbance position as the same-route position of the first light path and the second light path according to the first information and the second information.

Illustratively, the co-routed SRLG detection unit initiates co-routed SRLG detection after collecting a period of data (e.g., second information). Based on the coding similarity matching algorithm, the same-route detection unit can determine the first disturbance code and/or the second disturbance code according to the first disturbance information and/or the second disturbance information, and further determine whether the first light path and the second light path at the disturbance position have the same route or not by judging whether the similarity between the first disturbance code and/or the second disturbance code is greater than a preset threshold value and 0 or by judging whether the similarity between the first disturbance code and/or the second disturbance code and a disturbance code #0 reported by an excitation source terminal is greater than the preset threshold value, so that the implementation mode can doubly ensure the accuracy of the same-route SRLG detection.

Illustratively, the recording network element A1 extracts the disturbance code as code1, the network element A2 extracts the disturbance code as code2, and the disturbance code of the mechanical vibration excitation source terminal as code0. Wherein, the coding similarity is expressed by a levenshtein distance:

levab(code1，code2)＝1-ch<code1，code2>/max(len_code1，len_code2)

levab(code1，code0)＝1-ch<code1，code0>/max(len_code1，len_code0)

levab(code2，code0)＝1-ch<code2，code0>/max(len_code2，len_code0)

where levab (a, b) represents the levenshtein distance of code a, b, ch < a, b > represents the minimum operand that changes from code a to b, len_a represents the length of code a.

If the above 3 groups of similarity levab are all larger than a preset threshold (e.g. 0.8), i.e. when the similarity between the first and second disturbance codes is larger than 0.8 and/or the similarity between the first and second disturbance codes and the disturbance code #0 of the excitation source terminal is larger than 0.8, then the same route SRLG is considered to exist at the detection point (disturbance location of the excitation source terminal).

In a word, the same-route SRLG detection method based on mechanical wave coding can automatically identify the risk of the same cable and guarantee the reliability of the service. The introduction of coding can support the simultaneous detection of multiple points and improve the detection efficiency. The environmental interference can be effectively overcome based on the coding detection, and the accuracy of the detection result can be improved through multiple times of detection.

FIG. 13 is a schematic diagram of an example of a single point vibration co-routed SRLG detection system based on sound waves to which the present application is applied. As shown in fig. 13, the system device includes an optical fiber sensing module, a co-route SRLG detection unit and a sound wave vibration excitation source terminal.

For example, an optical path is formed between the network element A1 and the network element B1, and between the network element A2 and the network element B2, and the optical cable routes routed by the two optical paths have the same routing point or the same routing segment. And placing a coded sound wave vibration excitation source terminal at the same route point or the same route section, wherein all optical fibers in the same route can sense disturbance signals of the sound wave vibration excitation source terminal. Meanwhile, optical fiber sensors are deployed at the network elements A1, A2, B1 and B2 respectively to receive optical fiber sensing signals, and the optical fiber sensors are used for analyzing whether specific disturbance signals are contained in the optical fibers or not so as to perform same-route detection. In addition, a same-route SRLG detection unit is deployed on a certain node of the network to realize the detection of the same-route SRLG.

The same-route SRLG detection unit is used for carrying out same-route detection on a plurality of light paths by receiving first information reported by the sound wave vibration excitation source terminal, namely disturbance position GIS, disturbance time, disturbance code #1 and the like, and second information reported by the optical fiber sensing module, namely disturbance time, disturbance echo signals and the like.

Fig. 14 is another exemplary illustration of a co-route detection method 1400 applicable to the present application. As shown in fig. 14, in this implementation, the excitation source adopts sound waves, and the specific implementation steps include:

S1410, the excitation source terminal sends first information to the same-route SRLG detection unit.

Wherein the first information comprises at least one of: disturbance position GIS, disturbance time information, disturbance code #1 and other information of the excitation source terminal.

Illustratively, the patrolling personnel arrive at the planned detection point and initiate a mechanical vibration excitation source terminal disturbance. Then, the excitation source terminal reports the first information to the same-route SRLG detection unit for judging the accuracy of the same-route SRLG detection in the subsequent step S1450.

In this implementation, the vibration encoding of the excitation source terminal may refer to fig. 11 and fig. 12, and for brevity, a detailed description is omitted here.

S1420, the same-route SRLG detection unit sends a request message to the fiber optic sensing modules (e.g., the first fiber optic sensing module and the second fiber optic sensing module).

Wherein the request message is for requesting acquisition of the second information (i.e., the first perturbation information and the second perturbation information). For example, the second message includes the disturbance echo signal #1, the disturbance time, and the like.

S1430, the optical fiber sensing module collects disturbance echo signal #1 according to the request message.

S1440, the optical fiber sensing module sends second information to the same-route SRLG detection unit.

The optical fiber sensing module reports information such as a disturbance echo signal #1, disturbance time, disturbance distance and the like of a disturbance position of the optical fiber to the same-route SRLG detection unit after the disturbance echo signal of the optical fiber is acquired.

S1450, the same-route SRLG detection unit determines that the disturbance position is the same-route position of the first light path and the second light path according to the first information and the second information.

Illustratively, the co-routed SRLG detection unit initiates co-routed SRLG detection after collecting a period of data (e.g., second information). Based on an acoustic wave similarity matching algorithm, whether the first optical path and the second optical path at the disturbance position have the same route or not is determined by judging whether the similarity among a plurality of disturbance echo signals reported by the optical fiber sensing module is larger than a preset threshold value.

For example, when the similarity between the disturbance echo signal reported by the optical fiber sensing module of the network element A1 and the disturbance echo signal reported by the optical fiber sensing module of the network element A2 is greater than a preset threshold value 0.8, the disturbance position of the excitation source terminal is considered to be the same-route position of two optical fibers (for example, the optical paths A1-B1 and the optical paths A2-B2).

Illustratively, the description is provided in connection with the schematic diagram of the acoustic wave based single point vibration co-routed SRLG detection system illustrated in fig. 11. Recording that the disturbance echo extracted by the network element A1 is data1, and the disturbance echo extracted by the network element A2 is data2. Where acoustic wave correlation is denoted by r:

r(data1，data2)＝cov(data1，data2)/sqrt(var(data1)*var(data2))

where r (a, b) represents a, b correlation coefficients, cov (a, b) represents a, b covariance, var (a) represents a variance.

If the similarity r is greater than a preset threshold (e.g., 0.8), i.e., when the similarity between the first disturbance echo signal and the second disturbance echo signal is greater than 0.8, then the same route SRLG is considered to exist at the detection point (the disturbance location of the excitation source terminal).

In a word, the same-route SRLG detection method based on the acoustic wave coding can automatically identify the risk of the same cable and guarantee the reliability of the service.

Fig. 15 is a schematic diagram of an example of a full-network automatic co-route SRLG detection system to which the present application is applied. As shown in FIG. 15, the system device comprises an optical fiber sensing module, a co-route SRLG detection unit and an intelligent excitation source terminal set. The optical fiber sensing modules A, B, C and D are vibration sensing units, ODFs #1, #3, #7 and #9, tube wells #2, #5, #8, and optical cross boxes #4, #6 are respectively provided with an intelligent excitation source terminal.

For example, an intelligent excitation source terminal is disposed at the optical fiber key physical nodes odf#1, #3, #7 and #9, the pipe wells #2, #5 and #8, and the optical cross boxes #4 and #6, and disturbance signals of the excitation source terminal can be perceived by all optical fibers in the same route. And information feedback/control issuing is carried out between the same-route SRLG detection unit and the intelligent excitation source terminal. And respectively deploying optical fiber sensors at each network element, receiving optical fiber sensing signals, and analyzing whether the optical fibers contain specific disturbance signals or not so as to perform same-route detection. In addition, a same-route SRLG detection unit is deployed on a certain node of the network to realize the detection of the same-route SRLG.

Fig. 16 is a schematic diagram showing still another example of the same-route detection method 1600 to which the present application is applied. As shown in fig. 16, the implementation mode adopts full-network automatic same-route SRLG detection and optical cable network GIS automatic collection, and specifically comprises the following steps:

s1610, the same-route SRLG detection unit distributes configuration information to the intelligent excitation terminal aggregate packet.

Correspondingly, the intelligent excitation terminal sets respectively receive configuration information from the same-route SRLG detection unit.

The configuration information is used for enabling the intelligent disturbance excitation source terminal.

Illustratively, the set of intelligent excitation terminals are grouped according to three classes, ODF, pipe well, optical cross box. The same route SRLG detection unit respectively transmits configuration information to the ODF, the pipe well and the optical cross box.

The intelligent excitation source terminal simultaneously supports functions of reporting position GIS information, time information, remote coding control and the like.

S1620, the intelligent excitation source terminal configures a disturbance mode according to the configuration information and starts excitation source disturbance.

S1630, the intelligent excitation source terminal sends a response message to the same-route SRLG detection unit.

Correspondingly, the same-route SRLG detection unit receives a response message from the intelligent excitation source terminal.

The response message is used for replying to enable the intelligent excitation source terminal to succeed or fail in disturbance.

Meanwhile, the response message may include identification information (IVT_ID-GIS) returned to the IVT-GIS for indicating the location where the intelligent excitation source terminal disturbance succeeds or fails.

Specifically, the same-route SRLG detection unit delays waiting for acquiring a response success list and a failure list.

Wherein the response success list may be [ IVD_ID1-mod1, IVD_ID2-mod2, … … ], the failure list may be an associated repair order, or the like.

Optionally, the response message may also be one or more of the following information: disturbance characteristic information, time information, disturbance echo signals, disturbance codes and other information.

S1640, the same-route SRLG detection unit sends a request message to the optical fiber sensing modules A-D.

Correspondingly, the fiber optic sensing modules A-D receive request messages from the co-routed SRLG detection unit.

The request message is used for requesting to collect data, including disturbance characteristic information, and enabling optical fiber sensing to start detection. For example, each point of the fiber perturbs the echo signal, perturbs the code, etc. Wherein the disturbance characteristic information includes at least one of the following information: disturbance echo signal, disturbance time, disturbance distance, etc.

S1650, the optical fiber sensing module sends disturbance characteristic information to the same-route SRLG detection unit.

Correspondingly, the same-route SRLG detection unit receives disturbance characteristic information from the optical fiber sensing module.

Wherein the disturbance characteristic information includes at least one of the following information: disturbance echo signal, disturbance time, disturbance distance, etc.

Optionally, the optical fiber sensing module collects data, namely disturbance characteristic information, according to the request message, so as to determine the position where disturbance exists in the optical fiber.

S1660, after waiting for disturbance return by the same-route SRLG detection unit, associating the intelligent excitation source terminal disturbance identifier IVT-ID with the Fiber identifier fiber_ID to generate a Fiber routing node (fiber_ID-IVT_ID-dis-GIS) set.

S1670, the intelligent excitation source terminal is disabled.

It should be noted that, the steps S1610 to S1680 are repeated, and all the intelligent excitation source terminals are traversed.

S1680, the same-route SRLG detection unit preprocesses the optical fiber routing node set to generate corresponding optical fiber GIS information.

Wherein, the preprocessing may include denoising, upstream and downstream association, etc., which is not particularly limited in this application.

S1690, the same-route SRLG detection unit generates the whole-network same-route SRLG detection according to whether the adjacent point exists in the optical fiber GIS information matching space.

In a word, the application provides an efficient and accurate automatic co-cable SRLG detection method, reduces manual work to the scene, realizes multi-point simultaneous detection, and greatly improves detection efficiency.

Fig. 17 is a schematic diagram showing an example of the same-route detection in the fiber break/cut scene to which the present application is applied. As shown in fig. 17, the apparatus includes an optical fiber sensing module, a co-route detection unit, and a pipe well/optical cross box. The optical fiber sensing modules A, B, C and D are vibration sensing units, and an intelligent excitation source terminal is respectively deployed in a pipe well/optical junction box.

An intelligent excitation source terminal is deployed at an optical fiber key physical node pipe well/optical cross box, and disturbance signals of the excitation source terminal can be perceived by all optical fibers in the same route. And respectively deploying optical fiber sensors at the network element A and the network element B, receiving optical fiber sensing signals, and analyzing whether the optical fibers contain specific disturbance signals or not so as to perform same-route detection. The broken line part is the optical path before cutting-over between the optical fiber sensing modules A and B, and the solid line part is the optical path after cutting-over.

Fig. 18 is a schematic diagram of still another example of the same-route detection method to which the present application is applied. As shown in fig. 18, the implementation method performs co-route detection for a fiber breaking/cutting scene, and specifically includes the following steps:

s1810, the network element a reports a service power loss (power loss) alarm, and starts the optical fiber sensing/OTDR to detect the position of the broken fiber relative to the site (e.g., site a).

S1820, determining the pipe well/optical cross box nearest to the fiber breaking point according to the fiber breaking position, for example, the point a in the figure.

S1830, when the service power loss alarm disappears, namely the service is recovered, determining a pipe well/light intersection with the radius within the range R by taking the point a as the center of a circle. The NCE issues configuration information (including pattern generation) to the well/light cross for starting the disturbance stimulus terminals and collecting a start success list.

S1840, after collecting the starting success list, issuing the starting success list to the site A, and starting the optical fiber sensing collected data deployed at the site A.

It should be noted that, the specific implementation process may refer to the steps S1640-S1650, and for brevity, the description is omitted here.

S1850, optical fiber sensing at station A detects whether a matching code pattern exists in a pipe well/light intersection with a point a as a circle center and a radius R. And confirms that the next jump from the point a to the point b is started, and the intelligent disturbance excitation source terminal started in the step S1830 is turned off.

S1860, the steps S1830-S1850 are sequentially circulated, namely the optical fiber route sequentially detects and jumps from the position of the a position along the tube well/optical cross box in the optical path to the position of the site B to finish, and the traverse detection of the disturbance of the intelligent excitation source terminal is realized.

S1870, determining the same-route position of the whole network again according to whether the updated optical fiber GIS information matching space has the near point or not.

In a word, the application provides a high-efficiency and accurate method for collecting optical fiber GIS information and automatically detecting the same-cable SRLG, reduces manual arrival, realizes multipoint simultaneous detection, and greatly improves detection efficiency. Meanwhile, when the optical fiber route is changed or fails, detection and rush repair can be started quickly, and the real-time performance of the optical fiber GIS information is guaranteed.

In summary, the application provides a same-route SRLG detection method based on mechanical waves/sound waves, which can automatically identify the same-cable risk and ensure the service reliability. The method for detecting the SRLG/collecting the optical fiber GIS information by the automatic co-cable is efficient and accurate, manual arrival can be reduced, and the original manual point-by-point elimination is changed into remote control operation. By introducing codes, the simultaneous detection of multiple points can be realized, and the efficiency is greatly improved; environmental interference is effectively overcome, and the accuracy of the result can be improved through repeated detection. In addition, when the optical fiber route is changed or the optical fiber is in fault, the geographical position of the fault can be quickly locked according to the optical fiber GIS, the detection and the accurate rush repair can be quickly started, and the real-time performance of the optical fiber GIS information can be ensured.

In a word, real-time and accurate fiber GIS information/same-route SRLG detection can ensure the beneficial effects of manageability of fiber resources, same-route detection, service path planning and the like.

Embodiments of the co-route detection method of the present application are described above in detail with reference to fig. 1 to 18, and embodiments of the co-route detection device of the present application will be described below in detail with reference to fig. 19 and 20. 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. 19 is a schematic diagram of an example of a device for detecting the same route according to an embodiment of the present application. As shown in fig. 19, the apparatus 1000 may include a processing unit 1100 and a transceiving unit 1200.

Alternatively, the apparatus 1000 may correspond to the co-route detection unit in the above method embodiment, for example, may be a co-route detection unit, or a component (such as a circuit, a chip, or a chip system) configured in the co-route detection unit.

The transceiver 1200 is configured to receive, by using the co-route detection unit, first disturbance information from the first optical fiber sensing module, and second disturbance information from the second optical fiber sensing module, where the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts up the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals;

The processing unit 1100 is configured to determine, by using the co-route detection unit, that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

Optionally, the first excitation source terminal controls excitation source disturbance by means of encoding.

Alternatively, the excitation source of the first excitation source terminal adopts a mechanical wave or an acoustic wave.

Optionally, the generating manner of the disturbance code of the first excitation source terminal includes: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

Optionally, the processing unit 1100 is further configured to determine, when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

Optionally, the transceiver unit 1200 is further configured to receive third disturbance information from the first excitation source terminal by using the same route detection unit, where the third disturbance information includes at least one of the following information: the method comprises the steps that a first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal;

The processing unit 1100 is further configured to determine, by using the co-route detection unit, that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path according to the first disturbance information, the second disturbance information, and the third disturbance information.

Optionally, the processing unit 1100 is further configured to determine a first disturbance code according to the first disturbance information and/or determine a second disturbance code according to the second disturbance information by using the same-route detection unit;

the processing unit 1100 is further configured to determine, when a similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

Optionally, the first optical fiber sensing module and the second optical fiber sensing module are disposed at the first network element and the second network element respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

It is to be understood that the apparatus 1000 may correspond to the co-route detection unit in the method according to the embodiment of the present application, and that the apparatus 1000 may include a unit for performing the method performed by the co-route detection unit in the method according to the embodiment of the present application. And, each unit in the apparatus 1000 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method of the embodiment of the present application.

It should also be appreciated that when the apparatus 1000 is a co-route detection unit, the transceiver unit 1200 in the apparatus 1000 may be implemented by a transceiver, for example, may correspond to the transceiver 2020 in the apparatus 2000 illustrated in fig. 20, and the processing unit 1100 in the apparatus 1000 may be implemented by at least one processor, for example, may correspond to the processor 2010 in the apparatus 2000 illustrated in fig. 20.

It should also be understood that, when the apparatus 1000 is a chip or a chip system configured in the same routing detection unit, the transceiver unit 1200 in the apparatus 1000 may be implemented by an input/output interface, a circuit, etc., and the processing unit 1100 in the apparatus 1000 may be implemented by a processor, a microprocessor, an integrated circuit, etc. integrated on the chip or the chip system.

Alternatively, the apparatus 1000 may correspond to the optical fiber sensing module in the above method embodiment, for example, may be an optical fiber sensing module, or a component (such as a circuit, a chip, or a chip system) configured in the optical fiber sensing module.

The processing unit 1100 is configured to, after the first excitation source terminal starts excitation source disturbance, obtain first disturbance information and second disturbance information by using the first optical fiber sensing module and the second optical fiber sensing module, where the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals, where the first disturbance information and the second disturbance information are used to determine that a disturbance position of the first excitation source terminal is a same-route position of the first optical path and the second optical path;

The transceiver 1200 is configured to send the first disturbance information and the second disturbance information to the same-route detection unit by using the first optical fiber sensing module and the second optical fiber sensing module, respectively.

Optionally, the transceiver unit 1200 is further configured to receive a request message from the co-route detection unit by using the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information, respectively.

It is to be understood that the apparatus 1000 may correspond to a fiber optic sensing module in a method according to an embodiment of the present application, and that the apparatus 1000 may include means for performing the method performed by the fiber optic sensing module in the method of an embodiment of the present application. And, each unit in the apparatus 1000 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method of the embodiment of the present application.

It should also be appreciated that when the device 1000 is a fiber optic sensing module, the transceiver unit 1200 in the device 1000 may be implemented by a transceiver, for example, corresponding to the transceiver 2020 in the device 2000 illustrated in fig. 20, and the processing unit 1100 in the device 1000 may be implemented by at least one processor, for example, corresponding to the processor 2010 in the device 2000 illustrated in fig. 20.

It should also be understood that, when the apparatus 1000 is a chip or a chip system configured in an optical fiber sensing module, the transceiver unit 1200 in the apparatus 1000 may be implemented by an input/output interface, a circuit, etc., and the processing unit 1100 in the apparatus 1000 may be implemented by a processor, a microprocessor, an integrated circuit, etc. integrated on the chip or the chip system.

Fig. 20 is another exemplary schematic diagram of a co-route detection device according to an embodiment of the present application. As shown in fig. 20, the apparatus 2000 includes a processor 2010, a transceiver 2020, and a memory 2030. Wherein the processor 2010, the transceiver 2020, and the memory 2030 are in communication with each other through an internal connection path, the memory 2030 is for storing instructions, and the processor 2010 is for executing the instructions stored in the memory 2030 to control the transceiver 2020 to transmit signals and/or receive signals.

It should be appreciated that the apparatus 2000 may correspond to, and may be configured to perform, the various steps and/or processes performed by, the optical fiber sensing/co-routing SRLG detection unit/stimulus terminal in the method embodiments described above. 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. The memory 2030 may be a separate device or may be integrated within the processor 2010. The processor 2010 may be configured to execute instructions stored in the memory 2030 and when the processor 2010 executes the instructions stored in the memory, the processor 2010 is configured to perform the steps and/or flow of the method embodiments described above corresponding to the optical fiber sensing/co-routed SRLG detection unit/stimulus terminal.

Optionally, the apparatus 2000 is a co-route detection unit in the previous embodiment.

The transceiver 2020 is configured to receive, by using the co-route detection unit, first disturbance information from the first optical fiber sensing module and second disturbance information from the second optical fiber sensing module, where the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts up the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals;

and a processor 2010, configured to determine, by the co-route detection unit, that the disturbance location of the first excitation source terminal is the co-route location of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

Optionally, the device 2000 is a fiber optic sensing module in the previous embodiments.

The processor 2010 is configured to, after the first excitation source terminal starts excitation source disturbance, obtain first disturbance information and second disturbance information by using the first optical fiber sensing module and the second optical fiber sensing module, where the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals, where the first disturbance information and the second disturbance information are used to determine that a disturbance position of the first excitation source terminal is a same-route position of the first optical path and the second optical path;

And a transceiver 2020, configured to send the first disturbance information and the second disturbance information to the co-route detection unit by using the first optical fiber sensing module and the second optical fiber sensing module, respectively.

The transceiver 2020 may include a transmitter and a receiver, among other things. The processor 2010 and memory 2030 may be separate devices integrated on different chips than the transceiver 2020. For example, the processor 2010 and the memory 2030 may be integrated in a baseband chip and the transceiver 2020 may be integrated in a radio frequency chip. The processor 2010 and memory 2030 may also be integrated on the same chip as the transceiver 2020. The present application is not limited in this regard.

Alternatively, the apparatus 2000 is a component, such as a circuit, chip, system-on-chip, etc., configured in a fiber optic sensing/co-routed SRLG detection unit/excitation source terminal.

The transceiver 2020 may also be a communication interface such as an input/output interface, circuitry, etc. The transceiver 2020 may be integrated in the same chip as the processor 2010 and the memory 2020, e.g., in a baseband chip.

It should be understood that the specific examples in 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 may be considered as the best implementation 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 in this 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 each embodiment 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 such 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, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in 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 specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by 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 being applied to a same route detection system, wherein the same route detection system comprises a plurality of optical fiber sensing modules, at least one excitation source terminal and a same route detection unit, the plurality of optical fiber sensing modules comprise a first optical fiber sensing module and a second optical fiber sensing module, the at least one excitation source terminal comprises a first excitation source terminal, and the method comprises the following steps:

the co-route detection unit receives first disturbance information from the first optical fiber sensing module and receives second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts an excitation source to disturb, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals;

And the same-route detection unit determines the disturbance position of the first excitation source terminal as the same-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

2. The method of claim 1, wherein the first excitation source terminal controls excitation source perturbations by encoding.

3. A method according to claim 1 or 2, characterized in that the excitation source of the first excitation source terminal employs mechanical or acoustic waves.

4. A method according to any one of claims 1 to 3, wherein the manner of generating the disturbance code of the first excitation source terminal comprises: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

5. The method according to any one of claims 1 to 4, wherein the co-route detection unit determines, from the first disturbance information and the second disturbance information, a disturbance position of the first excitation source terminal as a co-route position of the first optical path and the second optical path, including:

when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is larger than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first light path and the second light path.

6. The method according to any one of claims 1 to 5, further comprising:

the co-route detection unit receives third disturbance information from the first excitation source terminal, wherein the third disturbance information comprises at least one of the following information: the first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal;

and the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first light path and the second light path according to the first disturbance information, the second disturbance information and the third disturbance information.

7. The method of claim 6, wherein the co-route detection unit determining, from the first perturbation information, the second perturbation information, and the third perturbation information, that the perturbation position of the first excitation source terminal is the co-route position of the first optical path and the second optical path, comprises:

the co-route detection unit determines a first disturbance code according to the first disturbance information and/or determines a second disturbance code according to the second disturbance information;

And when the similarity between at least one disturbance code in the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is larger than a preset threshold value, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

8. The method according to any one of claims 1 to 7, wherein the first optical fiber sensing module and the second optical fiber sensing module are disposed at a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

9. The method according to any one of claims 1 to 8, further comprising:

the same-route detection unit sends request messages to the first optical fiber sensing module and the second optical fiber sensing module, wherein the request messages are respectively used for requesting to acquire the first disturbance information and the second disturbance information.

10. The method according to any one of claims 1 to 9, wherein the at least one excitation source terminal comprises a second excitation source terminal, the method further comprising:

The co-route detection unit receives third disturbance information from the first optical fiber sensing module and receives fourth disturbance information from the second optical fiber sensing module, the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal starts an excitation source to disturb, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information respectively comprise disturbance time and disturbance echo signals;

the same-route detection unit generates first optical fiber geographic information system GIS information according to the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system GIS information according to the second disturbance information and the fourth disturbance information;

and the same-route detection unit determines the disturbance position of the first excitation source terminal and/or the disturbance position of the second excitation source terminal as the same-route position of the first optical path and the second optical path according to the fact that the first optical fiber GIS information and the second optical fiber GIS information have similar points in the matching space.

11. The method according to any one of claims 1 to 10, further comprising:

The same-route detection unit receives at least one disturbance message from the first optical fiber sensing module, the at least one disturbance message corresponds to at least one excitation source terminal in a first range one by one, the first range is a range with a radius R by taking a first excitation source terminal nearest to a target fiber breaking point as a circle center, and the target fiber breaking point is a fiber breaking position detected by the first optical fiber sensing module in the first optical path;

the co-route detection unit determines at least one second excitation source terminal of a next hop from the first excitation source terminal according to the at least one disturbance information in the first range, wherein the at least one second excitation source terminal is an excitation source terminal on the first optical path.

12. The method of claim 11, wherein the method further comprises:

the same-route detection unit receives at least one disturbance message from the first optical fiber sensing module, the at least one disturbance message corresponds to at least one excitation source terminal in an ith range one by one, the ith range is a range with the ith excitation source terminal as a circle center and the radius of R, the ith excitation source terminal is an excitation source terminal of the next hop of the ith-1 excitation source terminal on the first optical path, and i is an integer greater than or equal to 2;

The co-route detection unit determines at least one i+1 excitation source terminal of a next hop from the i-th excitation source terminal according to the at least one disturbance information in the i-th range, wherein the at least one i+1 excitation source terminal is an excitation source terminal closest to a third network element on the first optical path, the third network element and the first network element are a starting position and an ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element;

the same-route detection unit updates the same route of the first optical path based on the i+1 excitation source terminals.

13. The method for detecting the same route is characterized by being applied to a same route detection system, wherein the same route detection system comprises a plurality of optical fiber sensing modules, at least one excitation source terminal and a same route detection unit, the plurality of optical fiber sensing modules comprise a first optical fiber sensing module and a second optical fiber sensing module, the at least one excitation source terminal comprises a first excitation source terminal, and the method comprises the following steps:

after the first excitation source terminal starts excitation source disturbance, the first optical fiber sensing module and the second optical fiber sensing module respectively acquire first disturbance information and second disturbance information, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, the first disturbance information and the second disturbance information respectively comprise disturbance echo signals, and the first disturbance information and the second disturbance information are used for determining that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path;

The first optical fiber sensing module and the second optical fiber sensing module respectively send the first disturbance information and the second disturbance information to the same-route detection unit.

14. The method of claim 13, wherein the first optical fiber sensing module and the second optical fiber sensing module are disposed at a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

the first optical fiber sensing module and the second optical fiber sensing module receive request messages from the same-route detection unit, and the request messages are respectively used for requesting to acquire the first disturbance information and the second disturbance information.

16. A co-route detection device, comprising:

the receiving and transmitting unit is used for receiving first disturbance information from the first optical fiber sensing module and receiving second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts the excitation source to disturb, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, and the first disturbance information and the second disturbance information respectively comprise disturbance echo signals;

And the processing unit is used for determining the disturbance position of the first excitation source terminal as the same-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

17. The apparatus of claim 16, wherein the first excitation source terminal controls excitation source perturbations by encoding.

18. The apparatus of claim 16 or 17, wherein the excitation source of the first excitation source terminal employs a mechanical wave or an acoustic wave.

19. The apparatus according to any one of claims 16 to 18, wherein the manner of generating the disturbance code of the first excitation source terminal includes: a mechanical wave coding mode based on single-frequency time domain coding and/or an acoustic wave coding mode based on multi-frequency combination coding.

20. The device according to any one of claims 16 to 19, wherein,

when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the processing unit is further configured to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

21. The device according to any one of claims 16 to 20, wherein,

the receiving and transmitting unit is further configured to receive third disturbance information from the first excitation source terminal, where the third disturbance information includes at least one of the following information: the first excitation source terminal starts the disturbance time of excitation source disturbance, the position of the first excitation source terminal and the disturbance code of the first excitation source terminal;

the processing unit is further configured to determine, according to the first disturbance information, the second disturbance information, and the third disturbance information, that a disturbance position of the first excitation source terminal is a same-route position of the first optical path and the second optical path.

22. The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine a first disturbance code according to the first disturbance information and/or determine a second disturbance code according to the second disturbance information;

and when the similarity between at least one disturbance code of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the processing unit is further configured to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

23. The apparatus of any one of claims 16 to 22, wherein the first and second fiber optic sensing modules are disposed at first and second network elements, respectively, and the first excitation source terminal is disposed at any position of the first and/or second optical paths.

24. The device according to any one of claims 16 to 23, wherein,

the transceiver unit is further configured to send a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information respectively.

25. The apparatus of any one of claims 16 to 24, wherein the at least one excitation source terminal comprises a second excitation source terminal,

the transceiver unit is further configured to receive third disturbance information from the first optical fiber sensing module, and receive fourth disturbance information from the second optical fiber sensing module, where the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal starts the excitation source to perform disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information respectively include disturbance time and disturbance echo signals;

The processing unit is further configured to generate first optical fiber geographic information system GIS information according to the first disturbance information and the third disturbance information, and generate second optical fiber geographic information system GIS information according to the second disturbance information and the fourth disturbance information;

the processing unit is further configured to determine, according to the fact that the matching space of the first optical fiber GIS information and the second optical fiber GIS information has a near point, that the disturbance position of the first excitation source terminal and/or the disturbance position of the second excitation source terminal is the same-route position of the first optical path and the second optical path.

26. The device according to any one of claims 16 to 25, wherein,

the receiving and transmitting unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in a first range, the first range is a range with a radius R and a center of a first excitation source terminal closest to a target fiber breaking point, and the target fiber breaking point is a fiber breaking position detected by the first optical fiber sensing module in the first optical path;

the processing unit is further configured to determine at least one second excitation source terminal that is a next hop from the first excitation source terminal according to the at least one disturbance information in the first range, where the at least one second excitation source terminal is an excitation source terminal on the first optical path.

27. The apparatus of claim 26, wherein the device comprises a plurality of sensors,

the receiving and transmitting unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds to at least one excitation source terminal in an ith range, the ith range is a range with the ith excitation source terminal as a center and a radius R, the ith excitation source terminal is an excitation source terminal of a next hop of the ith-1 excitation source terminal on the first optical path, and i is an integer greater than or equal to 2;

the processing unit is further configured to determine, according to the at least one disturbance information in the ith range, at least one i+1th excitation source terminal that is next to the ith excitation source terminal, where the at least one i+1th excitation source terminal is an excitation source terminal closest to a third network element on the first optical path, the third network element and the first network element are starting positions of the first optical path, and the first optical fiber sensing module is deployed in the first network element;

the processing unit is further configured to update the same route of the first optical path based on the i+1 excitation source terminals.

28. A co-route detection device, comprising:

The processing unit is used for respectively acquiring first disturbance information and second disturbance information by the first optical fiber sensing module and the second optical fiber sensing module after the first excitation source terminal starts excitation source disturbance, wherein the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, the first disturbance information and the second disturbance information respectively comprise disturbance echo signals, and the first disturbance information and the second disturbance information are used for determining that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path;

the receiving and transmitting unit is used for respectively transmitting the first disturbance information and the second disturbance information to the same-route detection unit by the first optical fiber sensing module and the second optical fiber sensing module.

29. The apparatus of claim 28, wherein the first fiber sensing module and the second fiber sensing module are disposed at a first network element and a second network element, respectively, and the first excitation source terminal is disposed at any position of the first optical path and/or the second optical path.

30. The apparatus of claim 28 or 29, wherein the device comprises a plurality of sensors,

The receiving and transmitting unit is further configured to receive a request message from the same-route detection unit from the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to acquire the first disturbance information and the second disturbance information respectively.

31. 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 of any one of claims 1 to 15 by logic circuitry or executing code instructions for the communication device.

32. A co-route detection system, comprising: a co-route detection unit for performing the method of any one of claims 1 to 12 and a plurality of fibre-optic sensing modules for performing the method of any one of claims 13 to 15.

33. A chip, comprising: a processor for calling and running a computer program from memory, such that the chip is installed to perform the method of any of claims 1 to 15.

34. 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 15.

35. A computer program product, characterized in that the computer program code or instructions, when executed on a computer, cause the computer to perform the method of any of claims 1 to 15.